Method for highly-rigid plate foundation erection

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

 

The invention relates to the construction and can be used in the construction of high-rise buildings on non-uniformly compressible clay base.

It is known that the maximum precipitation of buildings can be increased, if in the construction of above-ground parts are not experiencing the efforts from the non-uniform sediment (see SNiP 2.02.01-83* Appendix 4 Marginal deformations of the Foundation p.2.). Moreover, in note to claim 5. for foundations as solid plates thresholds secondary sludge can be increased 1.5 times.

The rigidity of the plates, providing uniformity sediment above-ground part of the building can be achieved by increasing their thickness, but then growing the own weight of the slab, on payment of which will be spent a significant portion of the bearing capacity of the Foundation soil.

Known slotted spatial foundations, made as shallow foundations designed to resist loads from columns (Sorochan E. A. Foundations of industrial buildings. M: SR, 1986, S. 24, RIS). These foundations are preparing, filling intersecting slits formed in the ground bar, concrete and positioning them over the glass to install the column.

A disadvantage of the known solution for slab foundations is relatively low stiffness of the ribs and therefore the entire Foundation.

Closest to the proposed invention is a method of construction of monolithic structures (patent RU № 2079617 C1, 04G 11/02, 02D 5/20, 20.05.1997), including trenching around the perimeter of buildings, reinforcing their frames and concreting.

The disadvantage of this method is that formed in the ground spatial monolithic structure, then remove and set on prepared foundations, or not remove, removing the soil from the inner part of depriving structural elements of interaction with the surrounding soil.

Technical solution to the problem is to increase the rigidity of the base plate due to the work of ribs arranged in the ground.

The task is achieved in that in the method of construction slab Foundation increased stiffness, including the development of crosscutting in the Foundation soil trenches, filling them with concrete, pooling on top of the stove, according to the invention of the trench tear from the pit bottom at different depths, the bottom of the trenches do with the broadening in the form of the toe in which is placed the valve in the role of inextensible filaments, and the toe of the fill fiber concrete, while the trench and slab reinforced nets, and the cell centers of the plates sankarani.

The novelty of the claimed proposal due to the fact that the earth is formed of spatial thin-walled monolithic design is Oia, working in elasto-plastic medium with soil deformation is limited intersecting reinforced concrete walls.

The invention is illustrated by drawings, where figure 1 shows a diagram of the plate in figure 2 and figure 3 - longitudinal and cross sections of fragments of plates; figure 4 and figure 5 - location of reinforcement toe in the trench and the cross-section of the heel respectively.

The method of construction slab Foundation increased rigidity performed in the following sequence. In clay soils, pre-cut pit 1 and perform well 2 along its longitudinal sides. Then tear off the trench 3, the connecting bore 2, which are located opposite each other. In wells 2 lower shell-Widener (not shown) and slip it on the bottom of the trench 3. At the bottom of the trench 3 is formed by a widening 4 in the form of a heel, and the surrounding soil is compacted. Formed in the broadening of the 4 stack armature 5 of a large diameter, which previously savariaud elements-clamps 6, providing a necessary thickness of the protective layer, and to ensure the "derestimate the valve 5 ening 4 in the longitudinal and transverse directions of its ends coiled in loops 7, which is placed in a previously drilled borehole 2. Further broadening 4, placed in it a valve 5, fill fiber concrete 8. Then analogichnym way satisfied with the second system of wells and trenches perpendicular to the first with the only difference being that mark the sole of the broadening of the second system equal to the level of the top of the broadening of the first. Next, the unfilled portion of the trench 3 reinforced grids and concreted. The result is a grid of trenches 3 Bay 4, breaking ground within the building footprint on the 9 cell. The centers of gravity of the thus obtained cells 9 are satisfied with the anchors 10, in order to avoid curvature of the thin plate 11. Then produce reinforcement and concreting of the slab 11.

The method of construction of standard Foundation of high hardness, including the development of crosscutting in the Foundation soil trenches, filling them with concrete, pooling on top of the stove, characterized in that the trench tear from the pit bottom at different depths, the bottom of the trenches do with the broadening in the form of the toe in which is placed the valve in the role of inextensible filaments, and the toe of the fill fiber concrete, while the trench and slab reinforced nets, and the cell centers of the plates sankarani.



 

Same patents:

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.

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: 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

The invention relates to the field of construction, and in particular to methods of construction of foundations in wyrmbane pits on the weak and sedimentary soils for industrial and civil buildings and constructions

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

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!