Method for construction of foundation and its design

FIELD: construction.

SUBSTANCE: method for construction of a foundation includes preparation of a pit bottom for a foot, production of its rigid filler and an external shell of truncated cone shape with expansion of the lower part of its wall and formation of a compacted soil core. The foundation is erected from structural and soil construction elements. The bottom of the pit is prepared for the foot of the structural element with a groove in soil with the specified geometric shape, its rigid filler is made in a sectional conical form from fractions of lumpy clay and cement-sand mortar with the foot of the specified geometric shape. Expansion of the lower part of the wall in the external monolithic reinforced concrete shell is carried out with a foot with the specified geometric shape as well. A soil construction element is formed under a foot of a structural element with a rated pushing load from a structure, as a rigidly coupled compacted core in the form of a circular cone.

EFFECT: improved quality, reliability, bearing capacity of a base, performance, provision of foundation interaction with a base.

8 cl, 2 dwg

 

The group of inventions relates to the construction, in particular to the construction of industrial and civil buildings and structures.

There is a method of construction of precast concrete foundations in the shape of a hyperbolic paraboloid shell of precast concrete which is mounted on a building site in the pit with a flat bottom. The cavity of the shell is filled at the factory material, replacing the soil (see Terior A.N. Design and construction of economical designs of foundations. - Kiev: "Builder", 1975, p.76-150). The disadvantages of the method are: significant labor and material costs; high cost of manufacture, transportation and installation of the Foundation.

Known for precast reinforced concrete Foundation, including collection of a reinforced concrete shell in the shape of a hyperbolic paraboloid, the cavity of which is filled at the factory material, replacing the soil (see Terior A.N. Design and construction of economical designs of foundations. - Kiev: "Builder", 1975, p.76-150). The disadvantages of the Foundation are: aggregate has a malleability that allows an arbitrary change of the stress-strain state in his body; the flat sole of the Foundation, forming a saddle-node plot of contact with the ground voltage, makes it difficult to determine its R is countable physically maximum possible load capacity.

The closest technical solution is the method of construction of monolithic reinforced concrete foundations in the form of monolithic concrete outer truncated conical shell with widening at the bottom, placed in her filling material of different strength, stacked layers on the horizontal and vertical directions, and with condensed nucleus from the ground, formed under the flat sole Foundation in the form of transoid rotation around its vertical axis by the action settlement pressing load from the weight of Foundation soil, which lies on the lateral surface of the conical shell, and an elevated part of the structure (see Borozenets L.M. the extreme angles of the elementary sites slip in soils for solving problems in hydraulic engineering construction. Sat. Mat. 4-th International scientific-practical conference "Problems of water resources use and ecology of the hydrosphere". - Penza: Privolzhsky House of knowledge, 2001. S-95), (see Patent RU No. 2367743 C2, IPC 02D 27/01/2009 "Foundation"; authors: Linkin SV, Feklin VI; application: 2007122843/03, 18.06.2007; published: 20.09.2009. Bulletin # 2), adopted for the prototype.

For reasons that impede the achievement of specified following technical result when using the known method, taken as a prototype, consider the fact that the method requires the considerable costs due to perform three types of expensive raznopolosnyh elements filling the shell, for two consecutive period of laying and curing of heavy filler materials, in two different forms formwork for them; transoid rotation transforms the impedance of the ground on its side surface on a flat sole Foundation in the form of a saddle-type plot of the contact stresses, which complicates the calculation scheme of the structure of the Foundation when determining its strength.

Known solid Foundation, including monolithic reinforced concrete truncated-conical shell with the broadening of the lower part of the wall, filled with two bottom layers of the material vertically and one top layer of material horizontally and sealed the core in the form transoid rotation (see Patent RU No. 2367743 C2, IPC 02D 27/01/2009 "Foundation"; authors: Linkin SV, Feklin VI; application: 2007122843/03, 18.06.2007; published: 20.09.2009. Bulletin No. 26), adopted for the prototype.

For reasons that impede the achievement of specified following technical result when using the well-known Foundation, taken as a prototype, consider the fact that this Foundation is expensive for its production of heavy and expensive materials placeholder; it has a flat sole, which forms the basis of concentration core from the soil in the form of transoid rotation around its vertical axis, so complicates the calculation scheme as chosen to replace the th capacity of Foundation, and their designs.

The invention consists in the following.

The claimed group of inventions is directed to the solution of the problem - implementation in the construction industry foundations inventory conical composite sectional casing filler; production of fillers from one type of lung cheap composite building material; performing a structural building element with the sole PLANO-concave-convex shape; shaping action settlement pressing load from the structure under the sole structural building element of the soil of the construction element in the form of a circular cone.

The technical result - the implementation of the new conditions of interaction of the Foundation with its base, improve the quality, reliability, load bearing capacity of the Foundation, technical and economic efficiency and competitive ability of the base.

Specified single technical result in the exercise of invention the object of the method is achieved by the fact that the Foundation build constructive and soil building elements, in the manufacture of structural building element, including the preparation of the bottom of the pit underneath the foot, the device of the outer shell truncated-conical shape with the broadening of the lower part of the wall placed in her jesd the m filling material and the formation of compacted cores of soil, under the sole structural building element in the soil below the aligned flat surface of the bottom of the pit constructed by coaxially with the Foundation operates the deepening of the PLANO-convex-concave shape of the rotation on the set of geometric parameters; the placeholder perform fractional-structural clay from the sand-cement composition, a single calculation of the brand on the strength of his material; a fill material placed in the bottom section of the inventory composite conical casing, coaxially located with a hollow in the ground layers, recordatorios placement of horizontal rows of fractions Komkova clay, followed by pouring each of a number of sketches of a cement-sandy solution of a mushy consistency and its composition, providing the design strength of the filler after hardening, after filling the first section of the formwork increasing the second section with a rigid connection and perform similarly to the previous filling of the filling material, then the operation is repeated until the laying of the filler on the design height; the sole structural building element perform a PLANO-concave-convex shape of the rotation by the given geometric parameters depressions in the ground, used as a dirt casing by placing it first fractional-structural composite mA is Arial placeholder and then the concrete mix at the bottom of the broadening of the wall of the conical shell; clay building element is formed under a PLANO-concave-convex sole structural building element action settlement pressing load on the Foundation soil Foundation as concentration core, in the form of a circular cone of maximum and uniformly compacted soil along its height with the angle at the apex equal to two values of angle of internal friction of the soil.

Specified single technical result in the exercise of invention the device object is achieved by the fact that the Foundation consists of structural and soil building elements that structural building element, comprising a monolithic concrete outer shell of a truncated-conical shape with the broadening of the lower part of the wall and placed it hard filler is a filler of the same strength fractional-structural material of clay-sand-cement composition and contains the sole PLANO-concave-convex shape of the rotation with the set of geometric parameters; clay building element includes the sealed core of the soil, has the shape of a circular cone of maximum and evenly compacted soil along its height, with a PLANO-convex-concave shape of the base of the cone, with the magnitude of the angle at the apex equal to two values of angle of internal TREN the I ground.

A causal relationship between the set of essential features listed above, and the above-mentioned technical result. A depression in the soil below the flat surface of the bottom of the pit and use it as a dirt formwork allows the sole structural building element PLANO-concave-convex shape, which is formed sealed the kernel as clay construction element, in the form of a circular cone, implements physically maximum possible load bearing capacity of the Foundation. The use of composite sectional conical casing and sequentially layered styling recordatorios placement of one of a number of factions Komkova clay with subsequent fill it to the top fractions of a cement-sandy solution of a mushy consistency and composition, ensuring the design strength of the filling material, technologically guarantee high quality hard filler. The use of fill material one design brand strength greatly simplifies the design scheme designs as filler, and truncated-conical shell; reduces consumption, complexity, duration of production and capital costs; improves the conditions of interaction with the truncated-conical shell and a soft core. Izgotovlyeniye fractional-structural clay from the sand-cement composition allows to obtain a rigid structure aggregate of the fractions Komkova clay solid or semi-solid consistency and a cement-sandy solution, reducing the flow of sand to 50% of the volume of aggregate, cement and 30% of the volume of sand, significantly reducing the weight and material cost. The device soles structural building element PLANO-concave-convex shape rotation with predetermined geometrical parameters allows to form a sealed core in the form of a circular cone, which ensures maximum uniformly distributed reactive pressure base on its sole. Uniform compaction in the body of the engine throughout its height contributes to the achievement of the maximum uniform compressive values of normal and shear tangential stresses acting along the lateral surface of a cone that provides an implementation of the highest bearing capacity of Foundation. The receiving core in the form of a circular cone with an angle at its top, is numerically equal to two values of angle of internal friction of the soil, allows you to easily and accurately determine its size, which gives the simplification and a high degree of reliability calculations; to perceive and to evenly distribute the maximum jet pressure of the base in the lateral surface of the cone and pass it on the bottom of the structural building element values are maximum possible and evenly distributed reactive contact pressure, this is associated with the reliability R of the bots Foundation; to establish that the area of the side surface of the compacted core in the form of a circular cone size exceeds the area of the side surface of transoid rotation about 1.2 times that in the same amount increases the value of the bearing capacity of the Foundation. When PLANO-concave-convex shape of the rotation of the sole structural building element increases the firmness of the Foundation in its sole under the action of horizontal loads, which increases the reliability and technical competitive ability of the base. The device, consisting of structural and soil building elements, you can accept the load truncated-conical shell, the rigid filler and reinforced core; to send traffic truncated-conical shell filler and concentration on the core and filler concentration on the core and soft core as clay building block, it is qualitatively superior seal the subgrade; to improve the quality, reliability, load bearing capacity of the Foundation, technical and economic efficiency and competitive ability of the base.

The claimed group of inventions to meet the requirement of unity of invention, as this group forms a single inventive concept, and stated the object of the group - the way of the construction of the foundations is enta when its implementation is designed in the aggregate for the manufacture of the first of the stated objects of the group, the device - structural building element and forming with it the other declared object group device - ground construction element, in this case, all three of the group object of the invention is aimed at solving the same problem for a single technical result.

Information confirming the possibility of implementation of each object of the claimed group of inventions is to provide the above technical result. The object method is noted that the construction of the Foundation is carried out structural building element, the underside of which perform a PLANO-concave-convex shape in the dirt formwork, with the use of fill material with the same strength, fractional-structural clay from the sand-cement compositions, stacked in layers in the inventory sectional composite conical shape of the formwork and reinforced concrete, stacked in the inventory of the formwork shell, as well as from soil building element formed under plane-concave-convex sole structural building element and being treated as sealed core, in the form of a circular cone of maximum and uniformly compacted soil along its height under the influence of the calculated vertical load from the weight of constructive Stroitel the element, soil that lies on the lateral surface of the conical shell, and an elevated part of the structure.

The device object or Foundation figure 1 shows the vertical section, figure 2 - section a-a of figure 1.

The Foundation includes constructive and underground construction elements. Structural building element consists of a monolithic reinforced concrete truncated-conical shell 1 and the filling material 2. The shell 1 and the filler 2 as a structural building element, based on concentration core 3, considered as a soil building element. To increase rigidity of the shell 1 in the lower part of its wall arranged broadening 4, and for uniform distribution of the contact stresses in the soil outsole 5 ening 4 made PLANO-concave shape with predetermined geometrical parameters. The upper part of the truncated-conical shell 6 is completed, the hard disk 7, Veneman or glass 8 under precast concrete columns, or without it for the monolithic reinforced concrete or steel columns or Foundation beams. The filling material 2 shell made of hard structural composition of the fractions Komkova clay solid or semi-solid consistency 9 and a cement-sandy solution of 10 with the sole 11 of the concave-convex shape on the set of geometric parameters for uniform RA the distribution of the contact pressure of the soil on it. Clay building element or concentration core 3 is formed under the action settlement pressing load from the structure with the development of valid precipitation S PLANO-concave-convex sole 12 structural building element in the zone of the soil Foundation of the uniformly compacted depth of soil 13 in the form of the spatial shape of a circular cone 3 on the vertical axis with the estimated amount determined by the angle at the apex equal to two values of angle of internal friction of the soil, and the diameter of its base. The proposed combination of a PLANO-concave-convex shape of the sole 12 structural building element of the gradual change of curvature of the concave ring 5 from the tangent plane at its edges to mate with the convex spherical segment 11 in figure 1 converts the form of tangencies rotation compacted cores of both flat and convex shapes of soles foundations in the form of a circular cone elastic core 3, which generates reactive evenly distributed contact pressure of the base in the outsole on the plot with the value of the ordinate, is numerically equal to the value of the ordinate, is equivalent to the uniform distribution plot for the soles flat shape or the same plot for the soles of convex form, which indicate physically the maximum possible load bearing capacity of the core is found. Therefore, concentration core 3 made for clay building element, in the form of a circular cone, is formed under the action of vertical settlement pressing load from the mass of structural building element, soil, lying on the side surface of the conical shell, and the above-ground part of the building with the development of valid precipitation S proposed combined PLANO-concave-convex shape of the sole 12 structural building element.

The claimed group of inventions is intended for use in the construction of industrial and civil buildings and other structures.

Currently, all known means and methods for carrying out the proposed group of inventions.

The use of a group of inventions leads to lower costs for the construction of foundations of buildings and other structures by their production of the structural building element, depending on the application of the filling material of the conical shell, for example, of clay-sand-cement composition and soil building element formed in the process of construction of local soil base under the sole structural building element in the form of a circular cone.

On the basis of new technical solutions group of inventions for the construction of the fundamental is and are the new terms of engagement with its base, improve the quality, reliability, load bearing capacity of the Foundation, technical and economic efficiency and competitive ability of the base.

1. The method of construction of foundations, including the preparation of the bottom of the pit under the sole, making it hard filler and the outer shell truncated-conical shape with the broadening of the lower part of its walls and the formation of compacted cores of soil, characterized in that the Foundation build constructive and soil building elements, the preparation of the bottom of the pit under the sole structural element is produced with a hollow in the soil of a given geometric shape, its hard placeholder perform in the sectional conical casing of fractions Komkova clay and cement-sand mortar with the sole of a given geometric shape, the broadening of the bottom wall of the outer monolithic concrete shell is performed with the sole also given geometric form, form clay building element under the sole structural element calculated with a pressing load of the structure, as hard conjugate concentration core in the form of a circular cone.

2. The method of construction of the Foundation according to claim 1, characterized in that under the sole structural building element in the soil below the aligned flat surface of the bottom of the pit soonas built the Foundation operates the deepening of the PLANO-convex-concave shape of the rotation by the given geometric parameters.

3. The method of construction of the Foundation according to claim 1, characterized in that the filler perform fractional-structural clay from the sand-cement composition, a single calculation of the brand strength of its material, the filling material is placed in the bottom section of the inventory composite conical casing, coaxially located with a hollow in the ground layers, recordatorios placement of horizontal rows of fractions Komkova clay, followed by pouring of each row of a cement-sandy solution of a mushy consistency and composition, providing the design strength of the filler after curing, after filling the first section of the formwork increasing the second section with a rigid connection and perform similarly to the previous filling of the filling material, then the operation is repeated until the laying of the filler on the design height.

4. The method of construction of the Foundation according to claim 1, characterized in that the sole structural building element perform a PLANO-concave-convex shape of the rotation by the given geometric parameters depressions in the ground, used as a dirt casing by placing it first fractional-structural composite material of filler and then the concrete mix at the bottom of the broadening of the wall of the conical shell.

5. The method builds is listwa Foundation according to claim 1, characterized in that the clay building element is formed under a PLANO-concave-convex sole structural building element, as concentration core, in the form of a circular cone of maximum and uniformly compacted soil along its height with angle at its top, is numerically equal to two values of angle of internal friction of the soil.

6. The construction of the Foundation, including monolithic concrete outer shell of a truncated-conical shape with the broadening of the lower part of the wall, placed the hard filler and sealed the engine ground, characterized in that the Foundation consists of structural and soil structural elements, structural building element includes a shell with a sole broadening given constructive form, the hard filler is made of fractions Komkova clay and cement-sand mortar with the sole of a given geometric shape, clay building element is rigidly attached to the sole structural element, includes sealed the core has the shape of a circular cone.

7. The construction of the Foundation according to claim 6, characterized in that the structural element in the construction is the placeholder of the same strength fractional-structural material clay-sand-cement composition and contains the sole PLANO-convex-concave the shape of the rotation with predetermined geometrical parameters.

8. The construction of the Foundation according to claim 6, characterized in that underground construction element, as concentration core has the shape of a circular cone of maximum and uniformly compacted soil for its entire height with a PLANO-convex-concave shape of the rotation of the base of the cone, with the magnitude of the angle at the apex equal to two values of angle of internal friction of the soil.



 

Same patents:

FIELD: construction.

SUBSTANCE: lock prefabricated strip footing includes a support slab and rows of foundation slabs arranged on it. The support slab has a face inclined and bonder surfaces, the upper rib for a slot fixation into a lock of the above block. Foundation units have vertical and horizontal slots, protruding beyond faces of the bed and outbond surface by 1/3 of the width, at the same time the last row of the strip footing is arranged from a block, having a flat upper horizontal surface for resting of wall materials when erecting above walls.

EFFECT: reduced labour intensiveness of foundation blocks assembly, increased accuracy of foundation blocks installation, reduced deviations from horizontal and vertical planes, higher resistance of foundation blocks to displacement due to application of geometric parameters of a foundation block.

5 cl, 1 ex, 6 dwg

FIELD: construction.

SUBSTANCE: foundation includes boards arranged on a levelling sand preparatory base, having limiters under a foot. Boards have through slots along edges, and limiters are arranged in the form of flat plates, as capable of their insertion into through slots.

EFFECT: increased rated resistance of base soil, increased bearing capacity and reduced subsidence of a structure.

3 cl, 3 dwg

FIELD: construction.

SUBSTANCE: prestressed shallow foundation formed by a foundation slab, a ground base and a support board installed under the foundation slab and under the ground base at the optimal depth. On the foundation slab there are jacks arranged, which are connected with traction rods and with ground anchors, inserted into the support board and stressed with a total force, which is equal to or is slightly higher than the weight of the erected structure. Anchor traction rods are arranged with tubular section to supply mortar during arrangement of a support board.

EFFECT: invention provides for minimisation of ground base deformation and for elimination of bases and foundations of nearly located buildings and structures, reduction of material intensity and labour intensiveness in construction of foundations.

2 cl, 1 dwg

FIELD: construction.

SUBSTANCE: method to erect a foundation on heaving soils includes installation of a foundation slab and heat insulation material onto a levelled base. A sliding layer is laid on the prepared base, and a multi-layer spatial foundation platform, comprising heat insulation material, is erected in a monolithic manner. The lower reinforced concrete slab is formed with vertical reinforcement rods protruding into crossing ribs along the entire height of the platform. Heat insulation material is laid onto the lower reinforced concrete slab with the possibility to arrange a system of crossing ribs. Crossing ribs are formed. An intermediate reinforced concrete slab is formed, the second layer of heat insulation material is set on it. Cross ribs are formed, and the upper reinforced concrete slab is formed, besides, the vertical reinforcement rods are connected to reinforcement of all slab layers.

EFFECT: reduced labour costs, provision of heat insulation material durability against potential damage, higher spatial stiffness of the foundation slab and its distributing capacity, provision of protection against frost swelling.

3 cl, 1 dwg

FIELD: construction.

SUBSTANCE: heat-insulation foundation comprises wall, foot, insulator of wall, additional insulator of foundation connected to insulators of foot and blind area. Lower edge of foundation insulator is below the level of freezing of soil, and external moistureproof gasket is arranged at the edge of blind area insulator. Additional moistureproof gasket is also located under foot, connected to external moistureproof gasket, and fill is provided between foundation insulator and external moistureproof gasket.

EFFECT: improved operational properties of heat insulation foundation, simplified design, saving of energy resources.

3 cl, 2 dwg

Foundation // 2393297

FIELD: construction.

SUBSTANCE: foundation comprises artificial bed with curvilinear surface, bearing elements and shell arranged on bed. Bearing elements are arranged in the form of radial and circular tapes for shells with positive Gauss curvature or transverse and longitudinal tapes for shells with zero Gauss curvature, forming meshy shell and laid through gaskets made of two layers of material, which slide relative to each other, onto concrete surface formed on curvilinear surface of artificial bed arranged in pit and inverted upwards with its convexity. Radial or transverse tapes are fixed by their edges to support contour in the form of support ring or a system of cross beams, which is deepened into natural bed, and gasket of elastic material is located between concrete of shell and support contour.

EFFECT: reduced settling of foundation, lower material intensity, provision of efficient and reliable protection of above-foundation structure.

3 dwg

Foundation // 2385994

FIELD: construction.

SUBSTANCE: foundation comprises support part, vertical stiffening ribs installed in it, which form square metal frame, under-column part arranged on vertical stiffening ribs - metal frame and equipped with elements of column structure connection. Support part is equipped with lower and upper reinforcement grids, and stiffening ribs are arranged in the form of at least three beams coming out of a single centre located on vertical axis of foundation, are arranged in the form of bent profiles and equipped with stiffening elements. Stiffening ribs are installed between lower and upper reinforcement grids, and elements of column structure connection to support part are arranged in the form of reinforcement leads.

EFFECT: reduced metal intensity and increased bearing capacity of foundation, simplified design.

2 cl, 4 dwg

FIELD: construction.

SUBSTANCE: monolithic foundation for column erected on natural or manmade basement, for instance rammed in the form of truncated cone, comprises support part with metal frame and under-column part installed on metal frame and equipped with elements of column structure connection. Support part is equipped with lower and upper reinforcement grids, and metal frame is made in the form of rigid inserts, which are symmetrically arranged versus vertical axis of foundation and are installed between lower and upper reinforcement grids. Elements of column structure connection to support part are arranged in the form of reinforcement leads.

EFFECT: simplified design, reduced metal intensity and increased bearing capacity of foundation erected under column.

3 cl, 4 dwg

Foundation // 2380484

FIELD: construction industry.

SUBSTANCE: foundation includes natural base with curved surface, load-carrying members and cover located on base. Load-carrying members are made in the form of orthogonal bands forming a meshed cover and laid on system of blocks installed on natural curved base located in ditch and the bulge of which is directed upwards; at that, ends of bands are attached to support outline made in the form of two-way beam system, which is embedded in natural base.

EFFECT: effective and reliable protection of the construction above foundation, reducing material consumption.

2 dwg

FIELD: construction.

SUBSTANCE: method for erection of foundation slab of framed structure includes foundation preparation, arrangement of curb onto prepared foundation, installation of reinforcing grid, its fixation, concreting. Foundation is prepared by filling of gravel layer and a layer of sand over it and laying of hydraulic insulation, for instance PVC film, afterwards lower part of foundation slab of framed structure is shaped by installation of enclosing curb made of concrete, for instance onto hydraulic insulation, arrangement of reinforcing grid limited by enclosing curb along perimetre, fixation of reinforcing grid, for instance by means of welding, transverse and longitudinal axial marking of reinforcing grid into squares, for instance 2.02.0 m, in angles of which, perpendicularly to reinforcing grid, reinforcement is installed and fixed, for instance, by means of welding, with length equal to design thickness of foundation slab of framed structure. Concreting of reinforcing grid down to required thickness, with further installation of multiuse curb blocks onto concreted surface in centre of marked squares in number sufficient to fill three first rows perpendicularly to longitudinal axis of foundation slab of framed structure, concreting is performed in two stages, at the first stage space is concreted between enclosing curb, the first and partially second rows of blocks, afterwards concrete should mature to state, when its surface still is adhesive enough for connection with the following portion of concrete to form monolithic structure. At the second stage remaining part of the second and partially third rows of multiuse curb blocks is concreted, after hardness is achieved that excludes concrete breakage, when multiuse curb blocks are withdrawn. The first row of blocks is withdrawn and installed in the fourth row, concreting is continued till final formation of framed structure area. Cells, which are not filled with concrete, produced by blocks of multiuse curb, are closed with reinforced concrete covers, and upper part of foundation slab of framed structure is arranged by laying of reinforcing grid onto produced surface limited along perimetre by enclosing curb, fixation of reinforcing grid, its connection, by means of welding, with outlets of reinforcement of lower part of foundation slab of framed structure and concreting down to required thickness.

EFFECT: reduced material intensity and labour intensity, improved strength and reliability of design.

3 dwg

FIELD: construction, particularly new building erection and existent building reconstruction under any engineering-geological circumstances.

SUBSTANCE: foundation structure comprises shallow foundation and reinforcement members. Reinforcement members are made as vertical bars of precast or cast-in-place piles having diameters less than 200 mm and arranged along foundation perimeter. The piles are spaced a distance from outer foundation faces. The distance is equal to 0.1-0.5 of reinforcement member diameter. Distance between neighboring piles is equal to 2-4 reinforcement member diameters and reinforcement member length is 15-20 diameters thereof.

EFFECT: increased load-bearing capacity due to creating compressive operational conditions under different engineering-geological circumstances, increased dynamic rigidity of foundation base and reduced foundation deformation and vibrational amplitude.

9 dwg

FIELD: building, particularly panel foundations for multistory buildings and structures, which apply non-uniform loads to ground base.

SUBSTANCE: method involves forming crossing slots in ground; reinforcing the slots with frames and concreting the slots. For panel foundation erection in clay ground pit is preliminarily dug in ground. Then crossing slots adapted for reinforcing frames receiving are created in pit ground, wherein the reinforcing frames have projected parts. Areas of reinforcing frames intersection are additionally reinforced along with connecting projected parts and concreting thereof to fill the slots.

EFFECT: increased operational effectiveness and reduced costs.

2 dwg

FIELD: building, particularly to erect bored cast-in-place foundations of increased load-bearing abilities including ones having bottom marks typical to shallow foundations.

SUBSTANCE: stepped foundation comprises bored cast-in-place sections formed with the use of auger. Lower foundation step includes four peripheral cylinders of Dp.l. diameters and heights equal to above diameters. Peripheral cylinder centers are located at apexes of square having side lengths equal to Dp.l.. Square center coincides with center of support. Central support abutting four peripheral cylinders of lower foundation step has four expanded parts with Dc.exp diameters determined as Dc.exp=(1.0-1.2)Dp.l. and cylindrical bore having diameter Dp.up determined as Dp.up=(0.6-0.8)Dp.l.. Foundation bottom is 0.7 m below ground surface. Foundation erection method involves forming drilled pile sections; serially drilling wells having daug.1 diameters as each peripheral cylinder having Dp.l. is forming; creating each peripheral cylinder having height equal to Dp.l. by supplying working material for above cylinder forming; filling remainder well section with ground material, particularly with ground excavated from above object. Auger having diameter, which provides necessary Dp.l. diameter is used. The auger provides usage of technological processes, which provides 1.05-1.1 increase of pile diameter in comparison with auger diameter daug.1 and 1.1-1.2 increase of ground pile diameter in comparison with daug.1 diameter. After four peripheral cylinders of lower foundation step creation well having daug.2 diameter is drilled by means of direct auger rotation and ground excavation to day surface. The well has center coinciding with central support center and depth selected so that the well reach tops pf peripheral lower step cylinders. Then lower expanded part of central support is formed, wherein the expanded part has expansion degree Bc.exp./daug.2 equal to 1.5-2.0. During cylindrical bore drilling the expanded part has expansion degree Dp.up/daug.2 equal to 1.2-1.5.

EFFECT: increased load-bearing capacity per foundation volume unit, extended field of technical means.

3 cl, 4 dwg

FIELD: construction, particularly to erect foundations in natural base.

SUBSTANCE: method involves driving pair of members pivotally connected with each other and provided with single bevels at lower ends thereof in ground; digging-out trench; installing guiding member on trench bottom; forcing plate members in ground up to plate members abutting upon guiding member and closing of beveled upper ends thereof; installing the similar pair of members having lengths exceeding that of the first pair in trench; driving above pair in ground up to upper beveled ends closing; concreting the trench.

EFFECT: increased load-bearing capacity of the foundation due to inclined members embedding and ground compaction under foundation bottom.

4 dwg

FIELD: construction, particularly to erect multistory buildings on non-uniformly compressible clay base.

SUBSTANCE: method involves excavating crossing trenches in ground; filling the trenches with concrete and joining thereof with slab covering the trenches. Trenches are excavated from pit bottom for different depths. Lower trench parts are provided with widened abutment sections having reinforcement bars included therein. The reinforcement bars are used as non-stretched threads. Trenches and slab are reinforced with nettings. Cell centers of the slab are anchored.

EFFECT: increased rigidity of foundation slab due to provision of ribs in ground.

5 dwg

FIELD: construction, particularly to erect foundations on natural bases.

SUBSTANCE: shallow foundation comprises support mats and foundation building blocks. Support mats have through orifices along mat perimeters. Upper parts thereof have extensions shaped as truncated cones and adapted to immerse piles in ground as load increases during structure overbuilding.

EFFECT: increased load-bearing ability.

2 dwg

FIELD: construction, particularly to reconstruct buildings and building structures.

SUBSTANCE: foundation comprises supports, sheath freely formed in ground inside area defined by foundation so that convexity thereof faces upwards and connected to supports by means of flexible ties. Cement mix layer, metal arch trusses and reinforced concrete layer are serially arranged on ground inside area defined by foundation. Metal sheets are laid on arch trusses and connected with each other through welded joints to create flexible sheath. Pre-stressed flexible ties inserted in through support orifices and provided with fixing anchors are placed over the sheath. In the second embodiment foundation comprises support, sheath freely arranged in ground inside area defined by foundation so that convexity thereof faces upwards and connected to supports by means of flexible ties. Ground mix layer reinforced with cement mix, metal sheets and reinforced concrete layer are serially located on ground inside area defined by foundation. Metal sheets are bent along predetermined profile and connected with each other to create sheath. Relaxed flexible ties inserted in through support orifices and provided with fixing anchors are placed over the sheath.

EFFECT: increased operational reliability.

4 cl, 1 dwg, 1 ex

FIELD: construction, surface mounted structures.

SUBSTANCE: invention pertains to construction and can be used when erecting buildings with considerable loading on a compressed clay bed. The technique for erecting a solid core foundation slab with closed vertical walls, directed downwards, involves designing a foundation pit, trenches, reinforcing them with frames and filling with concrete, and joining the surface with a slab. The trenches are dug from the bottom of the foundation with different depths. The trenches are then joined, thereby forming several closed contours, whose depth increases from the central part of the slab to the edges. The technical outcome is increase in strength of the foundation slab due to effect of the square shaped closed edges in the ground.

EFFECT: increased strength of the foundation slab.

3 dwg

FIELD: constructional engineering.

SUBSTANCE: invention refers to constructions on heaving soils. House footing based on freezing through soils includes a rigid body with flanges and indents from soil side, footing indent inserts made of heat-insulating material, e.g. polystyrene foam at such ratio of flange and footing indent areas that soil pressure from the lower flange surface is not less than standard pressure of frost soil heaving, soil pressure from the lower insert surface is not exceeding design compression resistance of insert material. Also, the said footing contains supplementary heat insulation laid outside of the footing. The upper edge of supplementary heat insulation is passed from external edge of the footing in the form of interrupted inserts through rigid body of the footing and connected to supplementary heat insulation of opposite external edge of the footing. Relative area of interrupted inserts (β=Aint.ins./A0) is given by the relation β≤1-σmax/R, where Aint.ins. is sectional area of interrupted inserts, m2, A0 is gross sectional area of the footing within inserts arrangement regions, m2, σmax is maximum external load pressure in footing material, MPa, R is design resistance of footing material, MPa. Indents and flanges of the footing from soil side are alternating along footing length. Indents centres from soil sides are provided under interrupted inserts centres of supplementary heat insulation from each external edge of the footing.

EFFECT: possibility to lay foundation above the design depth of heaving soil frost penetration level.

4 dwg, 1 tbl

Basement structure // 2334050

FIELD: building.

SUBSTANCE: invention refers to construction of the basements of buildings. The basement structure of a building includes heat - and waterproofing layer (17, 18, 40) which is laid on a flat horizontal surface (51) layer of the material breaking capillary action. The basement structure includes a frame (31) which surrounds specified heat - and waterproofing layer (17, 18, 40), at least, in its top part, thus fixing integrity of basement structure in a horizontal plane and which serves for punctiform bracing of the building supported by basement structure. The specified basement structure is encapsulated with foil (111) from a metal material.

EFFECT: prevention of smell penetration in a building and water-proofing maintenance; possibility of fast and energy conserving erection of the basement.

8 cl, 8 dwg

Up!