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Special-shaped flange and foundation pit steel supporting structure using same

A special-shaped flange and steel support technology, which is applied in basic structure engineering, building construction, construction, etc., can solve problems such as unsuitable thick steel pipes, increased difficulty in hoisting, and small rigidity of a single root, etc., to improve corrosion resistance, Simple construction and assembly, and the effect of improving torsional strength

Active Publication Date: 2021-11-02
JIANGSU EAST CHINA GEOLOGICAL CONSTR GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage is that the rigidity of a single support is not large enough, and its integrity is not as good as that of reinforced concrete supports.
[0005] Due to the cylindrical shape of the steel pipe support, it is difficult to overlap adjacent steel pipes, and it is not easy to achieve a stable joint form; if the outer diameter of the steel pipe is increased to increase the cross-sectional area to improve the support stiffness, it will be due to the increase in the weight of the standard section. Increased difficulty in hoisting
H-shaped steel support is limited by the small cross-sectional area, and the rigidity of a single support is smaller than that of a circular tube. It is necessary to increase the overall rigidity by combining multiple supports, but at the same time it will occupy a large amount of foundation pit space and affect civil construction.
[0006] In general, the steel pipe support is not easy to be combined horizontally, and it is not suitable to increase the rigidity by thickening the steel pipe; the H-shaped steel support has a small rigidity, and needs to be combined into a truss system, which takes up a lot of space and affects civil construction

Method used

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  • Special-shaped flange and foundation pit steel supporting structure using same
  • Special-shaped flange and foundation pit steel supporting structure using same
  • Special-shaped flange and foundation pit steel supporting structure using same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0075] As a preferred embodiment of the special-shaped flange of the present invention, the left limiting part is two first wing plates arranged at the upper and lower ends of the left side of the end plate, and the two first wing plates are connected to the end plate. Plate vertical intersection setting;

[0076] The right limiting part is two second wing plates arranged at the upper and lower ends of the right side of the end plate, and the two second wing plates are vertically intersected with the end plate.

[0077] The upper limit part is a first ribbed plate arranged on the upper part of the end plate, and the first ribbed plate is vertically intersected with the end plate;

[0078] The lower limiting part is a second ribbed rib arranged at the lower part of the end plate, and the second ribbed rib is vertically intersected with the end plate.

[0079] Preferably, the end plate is a rectangular steel plate; the outer edge of the first wing plate is flush with the left e...

Embodiment 2

[0083] As another preferred embodiment of the special-shaped flange of the present invention, the left limiting part is a first side plate arranged on the left side of the end plate, and the first side plate is vertically intersected with the end plate ;

[0084] The right limiting part is a second side plate arranged on the right side of the end plate, and the second side plate is vertically intersected with the end plate.

[0085] The upper limit portion is an upper bottom plate arranged on the upper part of the end plate, and the upper bottom plate is vertically intersected with the end plate;

[0086] The lower limiting part is a lower bottom plate arranged at the lower part of the end plate, and the lower bottom plate is vertically intersected with the end plate.

[0087] Preferably, the end plate is a rectangular steel plate; the outer edge of the first side plate is flush with the left edge of the rectangular steel plate; the outer edge of the second side plate is flus...

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Abstract

The invention discloses a special-shaped flange and a foundation pit steel supporting structure using the same. The special-shaped flange comprises an end plate, a left limiting part connected to the edge of the left side of the end plate, a right limiting part connected to the edge of the right side of the end plate, an upper limiting part connected between the left limiting part and the right limiting part and positioned at the upper part of the end plate, and a lower limiting part connected between the left limiting part and the right limiting part and positioned at the lower part of the end plate, wherein a limiting cavity defined by the components is used for being connected with profile steel in a sleeved mode. The special-shaped flange is connected with the rectangular section steel of the corresponding specification in a sleeved mode, and a closed reinforced box type supporting beam can be formed; according to the structure, the torsional strength of the steel support can be improved, deformation of the support in practical application is effectively prevented, and the corrosion resistance of the steel structure can be remarkably improved through the closed structure.

Description

technical field [0001] The invention relates to the technical field of foundation pit support, in particular to a special-shaped flange and a foundation pit steel support structure using the special-shaped flange. Background technique [0002] At present, there are mainly two types of support systems in deep foundation pits in China: reinforced concrete support and steel support. [0003] Among them, the reinforced concrete support is to bind the steel bars to form a skeleton, and formwork is filled with concrete to form an integral support system with crown beams or purlins. Its advantages are high rigidity and relatively simple construction method. Its shortcomings are also more prominent, mainly in the long molding time, unable to quickly play a supporting role; time-consuming and labor-intensive dismantling, serious vibration, noise, and dust pollution; materials cannot be reused, which does not conform to the concept of green and environmental protection of modern buil...

Claims

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Application Information

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IPC IPC(8): E02D17/04E04B1/24E04B1/58
CPCE02D17/04E04B1/2403E04B2001/2406E04B2001/2415E04B2001/2421
Inventor 张旭东车平蔡其红胡光云李孟琳马娟
Owner JIANGSU EAST CHINA GEOLOGICAL CONSTR GROUP
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