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Fabricated square and rectangular tubular steel supporting beam system for foundation pit supporting

A technology of foundation pit support and square rectangular pipes, which is applied in excavation, infrastructure engineering, construction, etc., can solve the problems of low economic efficiency and high construction price, achieve increased contact area, fast construction, and increase market compatibility and selective effects

Active Publication Date: 2022-03-29
JIANGSU EAST CHINA GEOLOGICAL CONSTR GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But the construction price is high, and the economy is not very high

Method used

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  • Fabricated square and rectangular tubular steel supporting beam system for foundation pit supporting
  • Fabricated square and rectangular tubular steel supporting beam system for foundation pit supporting
  • Fabricated square and rectangular tubular steel supporting beam system for foundation pit supporting

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0085] Such as figure 1 , figure 2 , image 3 with Figure 4 As shown, an assembled square rectangular tubular steel support beam system for foundation pit support includes a support pile 1 arranged along the periphery of the foundation pit and a crown beam 2 arranged on the top of the support pile 1 or along the waist of the support pile 1 The set purlin 3, the supporting connectors provided on the crown beam 2 or the purlin 3, and the assembled square rectangular tubular steel system supported on the crown beam 2 or the purlin 3.

[0086] The supporting connectors include a number of triangular supports 4 arranged on both sides of the corners of the foundation pit crown beam 2 or purlin 3, a supporting plate 5 pre-buried or welded on the supporting surface of each triangular support 4, and the relative Embedded or welded support pallets 5 on crown beams 2 or purlins 3 on both sides.

[0087] Such as Figure 5 As shown, the support pallet 5 is welded by a square or rect...

Embodiment 2

[0096] See attached figure 1 , this embodiment is realized on the basis of the above-mentioned embodiment, and further limits the characteristics of the assembled square-rectangular tubular steel support beam system for foundation pit support. It can be double truss type combined pair bracing system III or triple truss type combined pair bracing system IV.

[0097] Among them, in the double truss type combined pair brace system III, a connecting rod 8 is arranged between the two pair braces, and a tee 10 is used for flange connection between the connecting rod 8 and the two pair braces.

[0098] Three-piece truss-type combined pair bracing system IV. A connecting rod 8 is set between two adjacent pair braces, and a tee 10 is used for flange connection between the outer single pair brace and the connecting rod 8. The middle single pair brace is connected to the connecting rod 8. The first four-way 11 is used for flange connection between the rods 8 .

Embodiment 3

[0100] See attached figure 1 , this embodiment is realized on the basis of the above-mentioned embodiment, and further defines the characteristics of the assembled square rectangular tubular steel support beam system for foundation pit support. In order to reduce the space occupied by the support as much as possible, the truss type steel Figure-eight supports are arranged on the outer sides of the two ends of the composite support respectively. The figure-eight support can be a single figure-eight support 13, or a double figure-eight support 14. Carry out flange connection with the second four-way 12 between the eight-shaped support and the support and the connecting rod 8 .

[0101] Such as figure 1 As shown, each pair of bracing combination system is arranged between the support plates 5 on the opposite sides of the crown beam 2 or purlin 3; a joint 9 is set between one end of the pair brace combination system and the support plate 5 . The flexible head 9 can be arranged ...

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Abstract

The invention discloses an assembly type square and rectangular tubular steel supporting beam system for foundation pit supporting, which comprises an enclosure structure arranged along the inner side wall of the periphery of a foundation pit; the support connecting piece is arranged on the enclosure structure; the end of the assembly type profile steel system is connected with the supporting connecting pieces so as to support the enclosure structure, and the assembly type profile steel system is characterized in that profile steel in the assembly type profile steel system is a square and rectangular tubular profile steel rod piece, the cross section of the square and rectangular tubular profile steel rod piece is square or rectangular, cover plates are welded to the two ends of the square and rectangular tubular profile steel rod piece respectively, and the cover plates are welded to the two ends of the square and rectangular tubular profile steel rod piece. A plurality of connecting through holes are uniformly formed in the cover plate; a plurality of triangular stiffening plates are welded on the cover plate; and the adjustable head is arranged in the combined assembly type profile steel system and is used for applying prestress. The fabricated square and rectangular tubular steel supporting beam system for foundation pit supporting has the advantages of being easy and convenient to install, good in stability, high in rigidity, low in supporting density and good in economical efficiency.

Description

technical field [0001] The invention discloses an assembled square-rectangular tubular steel support beam system for foundation pit support. Background technique [0002] At present, the internal support system of deep foundation pit in China can be divided into two types: reinforced concrete support and steel support according to the material. [0003] The size of the reinforced concrete support section can be set as required, with high rigidity, good integrity, high node strength, flexible layout, relatively simple construction method, and can be used for deep foundation pits with large stress. The disadvantages are mainly manifested in the long construction and maintenance period, loud installation and dismantling noise, serious dust pollution, and the materials cannot be reused, which is facing great challenges in today's increasingly stringent environmental protection requirements. [0004] The main advantages of the steel support system are: easy installation and disa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D17/04
CPCE02D17/04
Inventor 车平李孟琳马娟张旭东蔡其红胡光云颜庭成李玉成朱振峰程绩王红梅
Owner JIANGSU EAST CHINA GEOLOGICAL CONSTR GROUP