CN219973215U - Foundation pit supporting and reinforcing structure - Google Patents
Foundation pit supporting and reinforcing structure Download PDFInfo
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- CN219973215U CN219973215U CN202321058391.3U CN202321058391U CN219973215U CN 219973215 U CN219973215 U CN 219973215U CN 202321058391 U CN202321058391 U CN 202321058391U CN 219973215 U CN219973215 U CN 219973215U
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- foundation pit
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- plate
- pit supporting
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- 230000003014 reinforcing effect Effects 0.000 title claims abstract description 30
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 49
- 239000010959 steel Substances 0.000 claims abstract description 49
- 230000002787 reinforcement Effects 0.000 claims abstract description 11
- 238000004873 anchoring Methods 0.000 claims description 11
- 238000010276 construction Methods 0.000 abstract description 8
- 239000002689 soil Substances 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000004162 soil erosion Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
Abstract
The utility model provides a foundation pit supporting and reinforcing structure which comprises a support, a waist beam and an inclined support, wherein the support is arranged on the waist beam; the support is fixedly arranged on the basement bottom plate, the waist beam is fixedly arranged on the foundation pit supporting pile, and the inclined support is fixedly arranged between the supporting end of the support and the connecting end of the waist beam; the inclined support is a steel support structure with adjustable and fixed length; and a connecting structure for preventing the inclined support from slipping is arranged between the top of the inclined support and the foundation pit supporting pile. The foundation pit supporting and reinforcing structure improves stability of foundation pit reinforcement, the reinforcing structure not only can solve the difficult problem that the conventional treatment mode of 'base filling back pressure plus newly-arranged anchor cable' is difficult to effectively construct when a supporting system fails and the supporting structure is excessively deformed, but also has the advantages of simple structure, convenience in construction, clear stress system and reusability, and is good in economical efficiency.
Description
Technical Field
The utility model relates to the technical field of building engineering construction, in particular to a foundation pit supporting and reinforcing structure.
Background
With the continuous expansion of the urban construction scale, the urban land is increasingly stressed, the construction pace of a large ultra-deep basement is increasingly accelerated, and foundation pit support is an important link for preventing collapse and ensuring construction safety in the process of excavating an underground structure foundation pit, wherein pile anchor support is a common form of foundation pit support. In the construction process, the foundation pit is influenced by factors such as overload stacking outside the pit, soil erosion outside the pit, too small tension of an anchor rope, tension loss and the like, the ground subsidence of the foundation pit edge and the overlarge deformation of a supporting structure are possibly caused, a supporting system and the whole foundation pit are in dangerous states, and the common foundation pit reinforcing measures are base filling back pressure and newly-arranged anchor rope.
Disclosure of Invention
The utility model aims to provide a foundation pit supporting and reinforcing structure for improving stability of foundation pit reinforcement, aiming at the defect that the stability of foundation pit supporting is difficult to ensure when the deformation of the foundation pit supporting structure is overlarge in the conventional foundation pit reinforcing measures.
In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:
a foundation pit supporting and reinforcing structure comprises a support, a waist beam and an inclined support; the support is fixedly arranged on the basement bottom plate, the waist beam is fixedly arranged on the foundation pit supporting pile, and the inclined support is fixedly arranged between the supporting end of the support and the connecting end of the waist beam;
the inclined support is a steel support structure with adjustable and fixed length;
and a connecting structure for preventing the inclined support from slipping is arranged between the top of the inclined support and the foundation pit supporting pile.
Further, the support includes a plurality of interval arrangement's first connecting plate, the lower part and the basement bottom plate fixed connection of first connecting plate, the upper portion shape of first connecting plate is trapezoidal, the upper portion of first connecting plate is in support end one side fixedly connected with loading board of support.
Further, the lower part of the first connecting plate is pre-buried in the basement bottom plate, and the lower part of the first connecting plate is fixedly connected with an anchoring piece.
Further, the first connecting plate and the bearing plate are both steel plates; the anchoring member is a peg.
Further, the inclined support comprises a movable adjusting section, a main body section and a fixed connecting section which are assembled and connected; the bottom end of the movable adjusting section is arranged on the supporting end of the support; the top end of the movable adjusting section is fixedly connected with the bottom end of the main body section and the top end of the main body section is fixedly connected with the bottom end of the fixed connecting section through a plurality of bolt structures; the top of the fixed connection section is fixedly connected with the connection end of the waist beam through an anchoring structure.
Further, the movable adjusting section comprises a base, a jack and a first steel support; the bottom plate of base is arranged in on the supporting end of support, be equipped with between the top surface of bottom plate and the bottom of first steel support the jack, the top of base with carry out fixed connection through a plurality of mounting between the bottom of first steel support.
Further, the base comprises a bottom plate, two rectangular pipe bodies are vertically arranged in the middle of the bottom plate, and a second connecting plate is fixedly arranged between the two rectangular pipe bodies; and a third connecting plate is arranged between the top surface of the bottom plate and the side wall of the rectangular pipe body.
Further, a supporting frame is fixedly arranged in the bottom end of the first steel support, and the two ends of the bottom of the supporting frame are fixedly connected with a fourth connecting plate; the lifting jack is arranged between the top surface of the bottom plate and the bottom surface of the fourth connecting plate, and the top end of the rectangular pipe body is fixedly connected with the bottom end of the supporting frame through a plurality of fixing pieces.
Further, the anchoring structure comprises an anchor plate fixedly arranged at the connecting end of the waist beam, and a plurality of anchor rods are fixedly connected to the embedded end face of the anchor plate.
Further, the connection structure is a connection steel rope.
Compared with the prior art, the utility model has the beneficial effects that:
according to the foundation pit supporting and reinforcing structure, the foundation pit supporting and reinforcing structure formed by the support, the waist beam and the inclined support is arranged on the inner side of the pile anchor supporting and reinforcing structure, so that stability of foundation pit reinforcement is improved.
The foundation pit supporting and reinforcing structure can solve the difficult problem that the conventional treatment mode of 'base soil filling back pressure plus newly-arranged anchor ropes' is difficult to effectively construct when a supporting system fails and the supporting structure is excessively deformed.
The inclined support has the advantages of simple structure, convenience in construction, clear stress system and good economical efficiency, and can be reused.
Drawings
FIG. 1 is a schematic view of a foundation pit supporting reinforcement structure according to the present utility model;
FIG. 2 is a schematic view of the mounting structure of the stand according to the present utility model;
FIG. 3 is a schematic view of the mounting structure of the support of the present utility model;
FIG. 4 is a schematic diagram of a movable adjustment section according to the present utility model;
FIG. 5 is a cross-sectional view taken at A-A of FIG. 4;
FIG. 6 is a cross-sectional view taken at B-B of FIG. 4;
FIG. 7 is a left side and right side schematic view of the support frame according to the present utility model;
FIG. 8 is a schematic diagram of the connection between the movable adjusting section and the main body section and the connection between the main body section and the fixed connecting section;
FIG. 9 is a schematic view of a connecting end structure according to the present utility model;
FIG. 10 is a side view of an anchoring structure according to the present utility model;
FIG. 11 is a top view of an anchoring structure according to the present utility model;
fig. 12 is a schematic structural view of a wale in the present utility model.
In the figure:
1. a basement floor; 2. foundation pit supporting piles; 3. a support; 31. a first connection plate; 32. a carrying plate; 33. an anchor; 4. waist beam; 5. a diagonal support; 6. a movable adjusting section; 61. a base; 611. a bottom plate; 612. a rectangular tube body; 613. a second connecting plate; 614. a third connecting plate; 62. a jack; 63. a fixing member; 64. a first steel support; 641. a support frame; 642. a fourth connecting plate; 7. a main body section; 8. a fixed connection section; 9. a bolt structure; 10. a connection structure; 11. an anchor structure; 111. an anchor plate; 112. a bolt; 12. a fifth connecting plate; 13. a sixth connecting plate; 14. original waist beam.
Detailed Description
The utility model will be described in detail below with reference to the drawings in connection with embodiments. It should be noted that, without conflict, the embodiments of the present utility model and features of the embodiments may be combined with each other. For convenience of description, the words "upper", "lower", "left" and "right" are used hereinafter to denote only the directions corresponding to the upper, lower, left, and right directions of the drawings, and do not limit the structure.
As shown in fig. 1 to 12, a foundation pit supporting and reinforcing structure of the present embodiment includes a support 3, a wale 4 and a diagonal brace 5. The support 3 is fixedly arranged on the basement bottom plate 1, and the support 3 is the foundation of the whole foundation pit supporting and reinforcing structure.
The waist beam 4 is fixedly arranged on the foundation pit supporting pile 2. The waist beam 4 is a waist beam formed by expanding on the basis of the original waist beam 14, and the expanded part of the waist beam 4 is fixedly connected with the foundation pit support pile 2 through newly planted steel bars.
The inclined support 5 is fixedly arranged between the support end of the support 3 and the connecting end of the waist beam 4.
The inclined support 5 is a steel support structure with adjustable and fixed length.
A connecting structure 10 for preventing the inclined support 5 from slipping is arranged between the top of the inclined support 5 and the foundation pit supporting pile 2. The connection structure 10 is a connection cable.
As shown in fig. 1 to 3, the stand 3 includes a plurality of first connection plates 31 arranged at intervals. The lower part of the first connecting plate 31 is rectangular, and the lower part of the first connecting plate 31 is embedded in the basement bottom plate 1.
The upper portion of the first connecting plate 31 is trapezoidal, and a bearing plate 32 is fixedly connected to the upper portion of the first connecting plate 31 at one side of the supporting end of the support 3. The first connecting plate 31 and the bearing plate 32 are steel plates, and the first connecting plate 31 and the bearing plate 32 are fixedly connected by adopting a double-sided welding mode.
The lower part of the first connecting plate 31 is fixedly connected with a plurality of anchors 33 which are uniformly arranged at intervals, and the anchors 33 are pegs. This improves the stability of the connection between the first connection plate 31 and the basement floor 1, and improves the grip between the support 3 and the basement floor 1.
As shown in fig. 1, the diagonal brace 5 comprises a movable adjusting section 6, a main body section 7 and a fixed connecting section 8 which are assembled and connected. The bottom end of the movable adjusting section 6 is arranged on the supporting end of the support 3.
The top end of the movable adjusting section 6 is fixedly connected with the bottom end of the main body section 7, and the top end of the main body section 7 is fixedly connected with the bottom end of the fixed connecting section 8 through a plurality of bolt structures 9.
The top end of the fixed connection section 8 is fixedly connected with the connection end of the waist beam 4 through an anchoring structure 11.
As shown in fig. 4-7, the movable adjustment section 6 includes a base 61, a jack 62, and a first steel support 64. The bottom plate 611 of the base 61 is placed on the supporting end of the stand 3. The jack 62 is disposed between the top surface of the bottom plate 611 and the bottom end of the first steel support 64, and the top end of the base 61 is fixedly connected with the bottom end of the first steel support 64 through a plurality of fixing members 63.
The base 61 is made of steel. The base 61 includes a bottom plate 611, and the bottom plate 611 is a rectangular steel plate. Two rectangular pipe bodies 612 are vertically arranged in the middle of the bottom plate 611, and the rectangular pipe bodies 612 are rectangular steel. A second connecting plate 613 is fixedly arranged between the two rectangular pipe bodies 612, and the second connecting plate 613 is a trapezoidal steel plate. The top end surface of the rectangular tube 612 and the top end surface of the second connecting plate 613 are in the same plane. Thereby, stability of the base 61 can be ensured.
A third connecting plate 614 is arranged between the top surface of the bottom plate 611 and the side wall of the rectangular tube 612, and the third connecting plate 614 is a triangular steel plate. Thereby facilitating the transfer of force from the base 61.
The bottom end of the first steel support 64 is internally fixed with a support 641, and the support 641 is formed by welding a plurality of steel plates. The bottom two ends of the support 641 are fixedly connected with a fourth connecting plate 642. The fourth connecting plate 642 is located at the bottom end of the first steel support 64, the jack 62 is disposed between the top surface of the bottom plate 611 and the bottom surface of the fourth connecting plate 642, and the top ends of the two rectangular pipes 612 are fixedly connected with the bottom ends of the supporting frame 641 through a plurality of fixing members 63. The fixing member 63 is a steel wedge.
As shown in fig. 1-9, the top end of the first steel support 64 is provided with a connecting end. The main body section 7 comprises a second steel support, and the bottom end and the top end of the second steel support are respectively provided with a connecting end. The fixed connection section 8 comprises a third steel support, a connection end is arranged at the bottom end of the third steel support, and the top end of the third steel support is fixedly connected with the waist beam 4 through an anchoring structure 11. The connecting end comprises a fifth connecting plate 12 fixedly arranged at the periphery of the steel supporting end, the fifth connecting plate 12 is a circular steel plate, and a plurality of connecting holes are formed in the fifth connecting plate 12. A plurality of sixth connecting plates 13 are fixedly arranged between the fifth connecting plates 12 and the outer surface of the steel support, and the sixth connecting plates 13 are triangular steel plates.
The connecting ends of the top of the first steel support 64 and the connecting ends of the bottom of the second steel support and the connecting ends of the top of the second steel support and the connecting ends of the bottom of the third steel support are fixedly connected through a plurality of bolt structures 9.
As shown in fig. 1, 10 and 11, the anchoring structure 11 includes an anchor plate 111 fixedly disposed at the connection end of the waist beam 4, and a plurality of anchor rods 112 are fixedly connected to the pre-buried end surface of the anchor plate 111. The top end of the third steel support is fixedly connected with the connecting surface of the anchor plate 111 through welding.
When the foundation pit supporting and reinforcing structure is used, after the deformation of the pile anchor supporting and the structural failure are beyond the warning value, the on-site actual condition is combined, back pressure backfilling is carried out on the inner side of the foundation pit of the pile anchor supporting and reinforcing structure in an emergency mode, and earthwork of the pile top is removed; grouting the crack of the pile top, sealing the platform by spraying concrete, and scanning stratum radar after the pile, if a cavity exists, filling; then, the back pressure soil is excavated in layers, new anchor ropes are additionally arranged, and new waist beams are constructed; according to the foundation pit supporting and reinforcing design scheme, position lines of a reinforcing structure are discharged in the foundation pit, and the machined support is positioned and buried, and then a basement bottom plate and a bearing platform are constructed; finally, the movable adjusting section, the main body section and the fixed connecting section of the foundation pit supporting and reinforcing structure are installed step by step, the hydraulic jack is placed between the top surface of the bottom plate and the bottom end of the first steel support by adopting the crane, the oil pipe is connected, the pump is started, and the prestress is applied step by step according to the design requirement. After the prestress is applied in place, a steel wedge is placed between the top end of the base and the bottom end of the first steel support, the movable adjusting section is firmly welded, and the connecting steel rope is installed, so that the foundation pit supporting and reinforcing structure has a reliable connecting mode, and stability of foundation pit supporting can be guaranteed.
According to the foundation pit supporting and reinforcing structure, the stability of foundation pit reinforcement is improved by arranging the foundation pit supporting and reinforcing structure consisting of the support, the waist beam and the inclined support on the inner side of the pile anchor supporting and reinforcing structure. The foundation pit reinforcing and supporting structure can solve the difficult problem that the conventional treatment mode of 'base filling soil back pressure plus newly-arranged anchor cable' is difficult to effectively construct when a supporting system is invalid and the supporting structure is excessively deformed. The inclined support of this embodiment has simple structure, construction convenience, atress system definitely and can carry out reuse's advantage, and economic nature is good.
The foregoing examples are set forth in order to provide a more thorough description of the present utility model, and are not intended to limit the scope of the utility model, since modifications of the present utility model, in which equivalents thereof will occur to persons skilled in the art upon reading the present utility model, are intended to fall within the scope of the utility model as defined by the appended claims.
Claims (10)
1. The foundation pit supporting and reinforcing structure is characterized by comprising a support (3), a waist beam (4) and an inclined support (5); the support (3) is fixedly arranged on the basement bottom plate (1), the waist beam (4) is fixedly arranged on the foundation pit supporting pile (2), and the inclined support (5) is fixedly arranged between the supporting end of the support (3) and the connecting end of the waist beam (4);
the inclined support (5) is a steel support structure with adjustable and fixed length;
a connecting structure (10) for preventing the inclined support (5) from slipping is arranged between the top of the inclined support (5) and the foundation pit supporting pile (2).
2. The foundation pit supporting and reinforcing structure according to claim 1, wherein the support (3) comprises a plurality of first connecting plates (31) which are arranged at intervals, the lower parts of the first connecting plates (31) are fixedly connected with the basement bottom plate (1), the upper parts of the first connecting plates (31) are trapezoid, and the upper parts of the first connecting plates (31) are fixedly connected with a bearing plate (32) at one side of the supporting end of the support (3).
3. A foundation pit supporting reinforcement structure according to claim 2, wherein the lower part of the first connecting plate (31) is pre-buried in the basement bottom plate (1), and the lower part of the first connecting plate (31) is fixedly connected with an anchor (33).
4. A foundation pit supporting reinforcement structure according to claim 3, wherein the first connection plate (31) and the carrier plate (32) are both steel plates; the anchor (33) is a peg.
5. A foundation pit supporting reinforcement structure according to claim 1, characterized in that the diagonal bracing (5) comprises a movable adjusting section (6), a main body section (7) and a fixed connecting section (8) which are assembled and connected; the bottom end of the movable adjusting section (6) is arranged on the supporting end of the support (3); the top end of the movable adjusting section (6) is fixedly connected with the bottom end of the main body section (7) and the top end of the main body section (7) is fixedly connected with the bottom end of the fixed connecting section (8) through a plurality of bolt structures (9); the top end of the fixed connecting section (8) is fixedly connected with the connecting end of the waist beam (4) through an anchoring structure (11).
6. A foundation pit supporting reinforcement structure according to claim 5, wherein the movable adjustment section (6) comprises a base (61), a jack (62) and a first steel support (64); the bottom plate (611) of the base (61) is arranged on the supporting end of the support (3), the jack (62) is arranged between the top surface of the bottom plate (611) and the bottom end of the first steel support (64), and the top end of the base (61) is fixedly connected with the bottom end of the first steel support (64) through a plurality of fixing pieces (63).
7. The foundation pit supporting and reinforcing structure according to claim 6, wherein the base (61) comprises a bottom plate (611), two rectangular pipe bodies (612) are vertically arranged in the middle of the bottom plate (611), and a second connecting plate (613) is fixedly arranged between the two rectangular pipe bodies (612); and a third connecting plate (614) is arranged between the top surface of the bottom plate (611) and the side wall of the rectangular pipe body (612).
8. The foundation pit supporting and reinforcing structure according to claim 7, wherein a supporting frame (641) is fixedly arranged inside the bottom end of the first steel support (64), and a fourth connecting plate (642) is fixedly connected to both ends of the bottom of the supporting frame (641); the jack (62) is arranged between the top surface of the bottom plate (611) and the bottom surface of the fourth connecting plate (642), and the top end of the rectangular pipe body (612) is fixedly connected with the middle part of the bottom end of the supporting frame (641) through a plurality of fixing pieces (63).
9. A foundation pit supporting reinforcement structure according to any one of claims 5-8, wherein the anchoring structure (11) comprises an anchor plate (111) fixedly arranged at the connection end of the waist beam (4), and a plurality of anchor rods (112) are fixedly connected to the embedded end surface of the anchor plate (111).
10. A foundation pit supporting reinforcement structure according to any one of claims 1-8, wherein the connection structure (10) is a connection cable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321058391.3U CN219973215U (en) | 2023-05-06 | 2023-05-06 | Foundation pit supporting and reinforcing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321058391.3U CN219973215U (en) | 2023-05-06 | 2023-05-06 | Foundation pit supporting and reinforcing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219973215U true CN219973215U (en) | 2023-11-07 |
Family
ID=88578905
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321058391.3U Active CN219973215U (en) | 2023-05-06 | 2023-05-06 | Foundation pit supporting and reinforcing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219973215U (en) |
-
2023
- 2023-05-06 CN CN202321058391.3U patent/CN219973215U/en active Active
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