Foundation (variants)

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

 

The invention relates to the field of construction, namely, the reconstruction of buildings and structures.

Known to the Foundation, including free-standing support (Teccor A.N. Design and construction of economical designs of foundations. Kiev, Budivelnik, 1975, s-171, RIS), in which by increasing the area of support created a flexible elements placed on the Foundation soil, creates a gain.

Known Foundation in A.S. No. 715722 (M CL 02D 27/01, publ. 15.02.1980, bull. No. 6), including free-standing supports and placed on the ground between them flexible curved convex upward shell, attached by their ends to the supports and the shape of the shape underneath the ground. The disadvantage of this Foundation is a large horizontal strain, which can lead to the displacement of the supports inside the span, which reduces the reliability of the Foundation of this design.

Also known Foundation in A.S. No. 1035135 (M CL 02D 27/01, publ. 15.08.1983, bull. No. 30), in which the supports are connected by flexible membranes, lying on the ground, while the supports are made of a compound according to height with the bevel to the periphery, between the component parts of the supports are placed antifriction strip. In this Foundation, eliminates the possibility of displacement of supports inside passage, however, the increase in the carrying capacity of this design fundamental is rather limited, because there is a possibility of displacement of the lower part of the extreme supports in a horizontal direction when the load increases, which leads to unreliability of the work of the Foundation.

Closest to the proposed is the Foundation for A.S. 962463 (M CL 02D 27/01, publ. 30.09.1982, bull. No. 36 - prototype), which includes free-standing reliance placed on the plates, hard shell, freely placed on the ground vnutripuzarnogo space bulge upwards and attached to the supports by flexible connections, such as a steel rope. At upsetting supports is the tension and the load perceived by the shell.

The disadvantage of the prototype, as well as all of the above foundations is unreliable, since the shell is interacting with the surface of the ground on which it is placed, may be damaged due to heterogeneous soil conditions not only on composition but also on the density, and most importantly - because of misfolded levelling of the sand layer, what to do on a large area almost impossible. Any, at first glance, a slight bump can cause the concentration of tensile stresses, sometimes exceeding the critical value. In addition, the disadvantage is the inevitable sludge as load increases. In the process of precipitation increases the resistance of the soil is od sheath, compacted soil, stretched membrane, and the flexible connection. Only after these processes generate force, able to perceive some of the load from the Foundation and send it to the ground, thereby providing a joint operation.

The technical problem solved by the invention is the increase of reliability of work of the Foundation.

The problem is solved as follows. In the basement, including a support, a casing, freely placed on the ground vnutripuzarnogo space bulge upwards and attached to the supports by means of flexible connections, on the ground vnutripuzarnogo space sequentially placed a layer of cement, metal arch farm, on which are stacked metal sheets joined by welding, forming a flexible membrane, over which are flexible connection established with pre-tension in the through holes of the supports and provided at the ends of the locking bolts, and a layer of reinforced concrete. If the layer of reinforced concrete under pressure of any fracture or weak destruction, it is advisable on top of it to place a layer of cement mortar.

Increase of reliability of work of the Foundation is achieved through amplification by sequential placement on the ground vnutripuzarnogo space layer of cement is about solution metal arched trusses, which are stacked metal sheets and connected by welding, forming a flexible membrane, over which are flexible connection established with pre-tension in the through holes of the supports and provided at the ends of the locking bolts, and a layer of reinforced concrete, on top of which can be located layer of cement mortar, and is provided for pre-tension of the shell and flexible connections due to the discharge pressure of the solution in the cavity between the ground surface vnutripuzarnogo space and a flexible membrane, while the flexible membrane under pressure hardened solution does not lie on the ground surface, thereby providing uniform tension and the full exception the different shapes of the shell and the ground surface. Precipitation associated with soil compaction as the load increases, with the elimination of gaps in the joints and flexible tension links is practically reduced to zero, up to loads in excess of the expected pressure on the base.

Another possible technical solution is the Foundation, including support, shell, freely placed on the ground vnutripuzarnogo space bulge upwards and attached to the supports by means of flexible connections, in which the soil nutriformance what about the space sequentially placed a layer of soil mixture, reinforced cement mortar, arched at the specified profile metal sheets joined by welding, forming a flexible membrane, over which are flexible relationships established proslavlenie in the through holes of the supports and provided with fixing anchors at the ends, and a layer of reinforced concrete. It is expedient if the layer of reinforced concrete under pressure of any fracture or weak destruction, on top of it to place a layer of cement mortar.

Increase of reliability of work of the Foundation is achieved through amplification by sequential placement on the ground vnutripuzarnogo space layer of soil mix reinforced cement mortar, mortar, curved at the specified profile metal sheets connected by welding, forming a flexible membrane, over which are flexible relationships established proslavlennom in the through holes of the supports and provided at the ends of the locking bolts, and a layer of reinforced concrete, on top of which can be located layer of cement mortar, and is provided by the tension of the shell and flexible connections due to the discharge pressure of soil mixture, and then cement into the cavity between the surface of the soil vnutripuzarnogo space and a flexible membrane, while the flexible membrane under pressure is m layer of soil mixture, reinforced cement mortar, uniformly loaded, all precipitation associated with the mismatch of the shape of the shell and the ground surface, are completely eliminated. Precipitation associated with soil compaction as the load increases, with the elimination of gaps in the joints and flexible tension links is practically reduced to zero.

The invention can be used to strengthen the Foundation, including free-standing support and strengthen the foundations.

The invention is illustrated by the drawing, which shows a cross section of a strip Foundation.

The Foundation includes a support 1 with a through hole 2, on the ground vnutripuzarnogo space 3 sequentially placed a layer of soil mix reinforced cement mortar, 4, on which is laid arched at the specified profile metal sheets joined by welding, forming a flexible membrane 5, over which are flexible connection 6 with the locking anchors 7 at the ends, a layer of reinforced concrete 8.

The Foundation supports 1 punch transverse through hole 2. On the ground vnutripuzarnogo space 3, after the alignment, stack arched at the specified profile metal sheets and are welded to each other. The resulting flexible sheath 5 is reinforced from above by flexible connections 6 fiksiruyuschimi at the ends 7, for example, steel cables, which are installed with some proslavlenie in the through holes 2. To give the shell a convex shape in the cavity between the ground surface vnutripuzarnogo space and a flexible sheath 5 under pressure is injected soil mix, create on top of the shell with flexible connected layer of reinforced concrete 8, after hardening which pump the cement slurry in the cavity between the ground surface vnutripuzarnogo space and the shell, thereby increasing the already uploaded soil mix. If the layer of reinforced concrete under pressure of any fracture or weak destruction, on completion of the works on its surface it is necessary to make the screed layer of cement mortar (not shown).

For example, the tape Foundation in support of some step punch transverse through hole 2. Opposite holes on the ground vnutripuzarnogo space 3 with the same step across the entire width of the Foundation camber set up a metal arch farm, having the same external shape of the arc (not shown). They stack, for example, steel sheets, which are welded by welding to each other. Thus obtained flexible sheath 5 which is convex upward, closes all vnutripolostnoe area. Setenv holes 2 miss steel rope 6 with the locking bolt 7 on the end and placed on top of the shell 5, the other end on the opposite side of the Foundation tensile strain and also sancheriv. Flexible membrane 5, the reinforced steel cables from the side of the convexity, then pour a layer of reinforced concrete 8, which after hardening is able to create a spacer efforts, prevents movement of the supports to the inside of the span of the shell with increasing the load on it, then pump the cement slurry in the cavity between the ground surface vnutripuzarnogo space and shell. If the layer of reinforced concrete under pressure of any fracture or weak destruction, on completion of the works on its surface it is necessary to make the screed layer of cement mortar.

Example.

The need to strengthen the Foundation of a three-storey residential building at its reconstruction associated with an increase in the load on the Foundation by increasing the height of buildings up to five floors. For this existing Foundation in increments determined by the strength of the material of the walls and the load that is transmitted to the shell, punch through transverse holes with a diameter of 30 mm, after which the opposite hole on the ground vnutripuzarnogo space set is made of arched metal supports are stacked steel sheets with a thickness of 2 mm by means of electric welding weld to each other, education is rofl so flexible membrane. As flexible connections used cable fittings brand K-7, which secures the anchor at one end is passed through the hole, placed on top of the membrane, pass through the hole in front, and pull sancheriv on the other end. The shell is placed a layer of reinforced concrete class B20 and after its solidification in the cavity between the ground surface vnutripuzarnogo space and shell pump cement mortar grade M15 under pressure in excess of 20% of the expected pressure building at the base, as at this pressure for more precipitation, associated with increased pressure on the ground, completely excluded.

The proposed construction of the Foundation allows relocation of tenants to make his gain. Bearing capacity of Foundation received increases in proportion to the square of pressure.

1. The Foundation, including support, shell, freely placed on the ground vnutripuzarnogo space bulge upwards and attached to the supports by means of flexible connections, characterized in that on the ground vnutripuzarnogo space sequentially placed a layer of cement, metal arch farm, on which are stacked metal sheets joined by welding, forming a flexible membrane, over which are flexible connection, set the run with pre-tension in the through holes of the supports and provided at the ends of the fixing anchors, and a layer of reinforced concrete.

2. The Foundation according to claim 1, characterized in that the top layer of the reinforced concrete is a layer of cement.

3. The Foundation, including support, shell, freely placed on the ground vnutripuzarnogo space bulge upwards and attached to the supports by means of flexible connections, characterized in that on the ground vnutripuzarnogo space sequentially placed a layer of soil mix reinforced cement mortar, arched at the specified profile metal sheets joined by welding, forming a flexible membrane, over which are flexible relationships established proslavlenie in the through holes of the supports and provided with fixing anchors at the ends, and a layer of reinforced concrete.

4. The Foundation according to claim 3, characterized in that the top layer of the reinforced concrete is a layer of cement.



 

Same patents:

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

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EFFECT: increased operational effectiveness and reduced costs.

2 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

The invention relates to the construction and erection of buildings and structures on freezing heaving soils

Foundation // 2223368
The invention relates to the field of construction area foundations-shells and can be used in industrial and civil construction

Foundation // 2223367
The invention relates to the field of construction area foundations-shells and can be used in industrial and civil construction

The invention relates to the field of construction of residential buildings, and more specifically to a shallow foundations, for example, for homes, houses, cottages of individual construction

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

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