Assembly type recoverable foundation pit supporting structure

Abstract

The utility model relates to the technical field of building construction, and provides an assembly type recoverable foundation pit supporting structure which comprises a top beam, a supporting piece, a first connecting piece, a second connecting piece and a jack. The top beams are distributed at the tops of the support piles of two adjacent foundation pits in the foundation pit group; the supporting piece is supported between the two opposite crown beams; the supporting piece is connected with the crown beam through a first connecting piece, the supporting piece comprises at least two supporting sections which are arranged at intervals in the length direction of the supporting piece, and every two adjacent supporting sections are connected through a second connecting piece; the jack is supported between the second connecting piece and the supporting section. The supporting piece, the first connecting piece, the second connecting piece and the jack are all movable assemblies, installation and detachment are convenient, recycling can be achieved, efficiency is high, and practicability is high.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of building construction, concretely relates to a kind of assembled recyclable foundation pit support structure. BACKGROUND

[0002] At present, foundation pit engineering has developed from single foundation pit to foundation pit group composed of multiple foundation pits, and the simultaneous excavation of multiple adjacent foundation pits is more common, among which row pile foundation pit support is a common foundation pit support structure form, and internal support or external support and other support structures need to be added in row pile support. The structure of the existing support member is complex, in order to improve the stability of the foundation pit support, the number of support members is increased, which leads to a bulky whole foundation pit support structure, a large space is occupied by the foundation pit support structure, which is not conducive to the construction operation in the foundation pit. The foundation pit support structure is usually detachable, and the installation of the support member of the existing foundation pit support structure is complex, which is also not conducive to subsequent disassembly operation. SUMMARY

[0003] In view of the problems in the prior art, the present application provides an assembled recyclable foundation pit support structure, which reduces the mutual influence between foundation pit constructions, reasonably shortens the construction period, and ensures the economic benefits of foundation pit group construction.

[0004] The utility model provides a kind of assembled recyclable foundation pit support structure, including crown beam, support piece, first connecting piece, second connecting piece and jack;The crown beam is distributed in the top of the support pile of adjacent two foundation pits in foundation pit group;The support piece is supported between the two opposite crown beams;The support piece is connected with the crown beam by the first connecting piece, and the support piece includes at least two support sections arranged at intervals along its length direction, and adjacent two support sections are connected by the second connecting piece;The jack is supported between the second connecting piece and the support section.

[0005] Further, the support section includes H-shaped steel and steel plate with holes connected to both ends of the H-shaped steel;The second connecting piece includes horizontally arranged U-shaped screw and nut matched with the U-shaped screw;The U-shaped screw passes through the steel plate with holes of adjacent two support sections, and the nut abuts against the opposite ends of the steel plate with holes of two support sections.

[0006] Further, the jack is horizontally supported between the U-shaped screw and the steel plate with holes.

[0007] Further, the U-shaped screw is distributed on both sides of the web of the H-shaped steel.

[0008] Further, at least four through holes are provided on the steel plate with holes, and at least four through holes are symmetrically distributed on both sides of the web of the H-shaped steel in the region of the steel plate with holes.

[0009] Further, the foundation pit support structure further comprises a triangular support arranged on the lower flange plate of the H-shaped steel, and the jack is arranged on the triangular support.

[0010] Further, the second connecting piece further comprises a backing plate connected with the U-shaped screw rod, and the backing plate is located between the U-shaped screw rod and the jack.

[0011] Further, the backing plate comprises a wood plate and / or a steel plate.

[0012] The beneficial effects of the utility model are as follows: the second connecting piece is connected between two adjacent support sections of the support piece, and the jack is supported between the support section and the second connecting piece, the jack applies appropriate pressure to the second connecting piece during work, the second connecting piece is not easy to deform due to the constraint of the perforated steel plate, the transmitted pressure effectively plays a role, the nut of the second connecting piece plays a fixing role, and the two adjacent foundation pits are constrained by the assembled recyclable foundation pit support structure. The second connecting piece is symmetrically distributed, force balance is maintained, and work stability is improved. The support piece, the first connecting piece, the second connecting piece and the jack are movable components, are convenient to install and disassemble, can be recycled and repeatedly used, are high in efficiency and strong in practicality. The perforated steel plates are arranged at the two ends of the H-shaped steel connected with the support section, the integrity and usability of the H-shaped steel are improved, and the connection is more compact. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is a plan structure schematic view of the assembled recyclable foundation pit support structure of the utility model installed between two adjacent foundation pits of a foundation pit group.

[0014] Figure 2 It is a plan structure schematic view of the foundation pit support structure of the utility model. Figure 1

[0015] Figure 3 It is a vertical structure schematic view of the support pile and the crown beam of the utility model. Figure 2

[0016] Figure 4 It is a side view structure schematic view of the crown beam of the utility model to which the support piece is connected through the first connecting piece. Figure 3

[0017] Figure 5 It is an end surface structure schematic view of one support section of the support piece of the utility model.

[0018] Figure 6 It is a structure schematic view of two adjacent support sections of the support piece of the utility model connected through the second connecting piece.

[0019] Figure 7 It is a structure schematic view of two adjacent support sections of the support piece of the utility model connected through the second connecting piece.​​​Figure 6 A schematic diagram of the elevation structure of the perforated steel plate connecting two adjacent support sections via the second connecting member;

[0020] Figure 8 This is a schematic diagram of the end face structure of the U-shaped screw of this utility model, with a pad connected to it and passing through the through hole of the perforated steel plate;

[0021] Figure 9 This is a schematic diagram of the elevation structure of the U-shaped screw of this utility model.

[0022] In the diagram: 10 - foundation pit support structure; 11 - capping beam; 12 - H-beam; 13 - perforated steel plate; 14 - first connecting piece; 15 - U-shaped screw; 16 - nut; 17 - pad; 18 - jack; 19 - triangular bracket. Detailed Implementation

[0023] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0024] like Figure 1 The diagram illustrates a prefabricated, recyclable foundation pit support structure, installed between adjacent foundation pits in a foundation pit group. The foundation pit group in this embodiment is as follows: Figure 1 As shown, it includes three foundation pits. The foundation pit support structure 10 in this embodiment includes a cap beam 11, a support member, a first connector 14, a second connector, a jack 18, and a triangular bracket 19.

[0025] Combination Figure 2 , Figure 3 As shown, capping beams 11 are distributed at the top of the support piles of two adjacent foundation pits in the foundation pit group. Support members are provided between two opposing capping beams 11. Figure 1 As shown, there are multiple support members, spaced apart, supporting the capping beams 11 between two adjacent foundation pits. The capping beams 11 between the two foundation pits are 10m apart.

[0026] The crown beam 11 is provided with mounting holes, and each support component is equipped with four mounting holes.

[0027] The first connector 14 includes a first connecting bolt, which engages with a mounting hole on the crown beam 11.

[0028] like Figure 2 As shown, the support member includes two support segments spaced apart along its length. Adjacent support segments are connected by a second connector.

[0029] Each support section includes an H-beam 12 and a perforated steel plate 13 connected to both ends of the H-beam 12. For example... Figure 5As shown, the hole steel plate 13 is provided with four through holes, which are symmetrically distributed on both sides of the web of the H-shaped steel 12. The length of the H-shaped steel 12 is 4900mm, and the specification is 400*400*13*21mm.

[0030] As shown in the drawings, Figure 4 As shown, the hole steel plate 13 at the opposite ends of the two support sections of the support is connected with the corresponding crown beam 11 through the first connecting bolt. One end of the support section is anchored to the crown beam 11 by the first connecting bolt.

[0031] As shown in the drawings, Figures 6-9 As shown, the second connecting piece includes a horizontally arranged U-shaped screw 15, a nut 16 matched with the U-shaped screw 15, and a backing plate 17. The U-shaped screw 15 passes through the hole steel plates 13 of the adjacent two support sections, and the nut 16 abuts against the opposite ends of the hole steel plates 13 of the two support sections. The jack 18 is horizontally supported between the U-shaped screw 15 and the hole steel plate 13. The U-shaped screw 15 is symmetrically distributed on both sides of the web of the H-shaped steel 12. The U-shaped screw 15 includes a vertical rod and horizontal rods distributed at both ends of the vertical rod. The two horizontal rods are arranged in parallel on the same side of the vertical rod, and the horizontal rods are provided with threaded sections for screwing with the nuts 16 through the hole steel plates 13. Figure 7 As shown, one nut 16 is screwed at the opposite end of the horizontal rod between the two hole steel plates 13.

[0032] As shown in the drawings, Figure 6 , Figure 8 As shown, the vertical rod of the U-shaped screw 15 is tied with the backing plate 17. The backing plate 17 is located between the U-shaped screw 15 and the jack 18. The backing plate 17 includes a wooden plate and / or a steel plate. The backing plate 17 is connected with the U-shaped screw 15 by tying with steel bars. The thickness of the wooden plate and the steel plate is 20mm and 50mm respectively, and the specification size is 280mm in length and 80mm in width. The distance between the vertical rod and the hole steel plate 13 is 300mm.

[0033] The triangular support 19 is arranged on the lower flange plate of the H-shaped steel 12, and the jack 18 is installed on the triangular support 19. The jack 18 is supported between the hole steel plate 13 and the vertical rod of the U-shaped screw 15.

[0034] The jack 18 applies pressure to the backing plate 17, at this time, the two H-shaped steels 12 will approach each other, and after achieving the preset effect, the jack 18 is completed but the position is fixed, all the nuts 16 are tightened to the hole steel plate 13, and the second connecting piece is fixed again, and then the jack 18, the triangular support 19 and the backing plate 17 can be removed.

[0035] The two adjacent support sections of the support member are connected by the second connecting member, and the jack 18 is supported between the support section and the second connecting member. During operation, the jack 18 applies appropriate pressure to the second connecting member. The second connecting member is not easily deformed due to the constraint of the steel plate 13 with holes, and the transmitted pressure effectively plays a role. The nut 16 of the second connecting member plays a fixing role, so that the two adjacent foundation pits are constrained by the assembled and recyclable foundation pit support structure 10. The second connecting member is symmetrically distributed to maintain force balance and improve work stability. The support member, the first connecting member 14, the second connecting member, and the jack 18 are all movable components, which are convenient to install and disassemble, can be recycled and reused, are efficient, and are practical.

[0036] The above is only the preferred embodiment of the present application, and the protection scope of the present application is not limited to the above-mentioned embodiments. Any technical solution falling within the concept of the present application shall fall within the protection scope of the present application. It should be noted that, for ordinary skilled persons in the art, some improvements and refinements without departing from the principles of the present application shall also be considered as falling within the protection scope of the present application.

Claims

1. A prefabricated recyclable foundation pit support structure, characterized in that, The system includes a capping beam, a support member, a first connector, a second connector, and a jack. The capping beams are distributed on top of the support piles of two adjacent foundation pits in the foundation pit group. The support member is supported between two opposing capping beams. The support member is connected to the capping beam through the first connector, and the support member includes at least two support segments arranged at intervals along its length, with adjacent support segments connected by the second connector. The jack is supported between the second connector and the support segments.

2. The prefabricated recyclable foundation pit support structure according to claim 1, characterized in that, The support section includes an H-beam and perforated steel plates connected to both ends of the H-beam; the second connector includes a horizontally arranged U-shaped screw and a nut that mates with the U-shaped screw; the U-shaped screw passes through the perforated steel plates of two adjacent support sections, and the nut abuts against the opposite ends of the perforated steel plates of the two support sections.

3. The prefabricated recyclable foundation pit support structure according to claim 2, characterized in that, The jack is horizontally supported between the U-shaped screw and the perforated steel plate.

4. The prefabricated recyclable foundation pit support structure according to claim 2, characterized in that, The U-shaped screws are distributed on both sides of the web of the H-beam.

5. A prefabricated recyclable foundation pit support structure according to claim 2, characterized in that, The perforated steel plate is provided with at least four through holes, which are symmetrically distributed on both sides of the web of the H-beam.

6. The prefabricated recyclable foundation pit support structure according to claim 2, characterized in that, The foundation pit support structure also includes a triangular bracket, which is set on the lower flange plate of the H-beam, and the jack is installed on the triangular bracket.

7. The prefabricated recyclable foundation pit support structure according to claim 2, characterized in that, The second connector also includes a pad, which is connected to the U-shaped screw and is located between the U-shaped screw and the jack.

8. The prefabricated recyclable foundation pit support structure according to claim 7, characterized in that, The padding includes wooden boards and / or steel plates.

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