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Fabricated inner supporting system composed of steel pipes and H type steel standard parts

A support system and steel pipe support technology, which is applied in excavation, construction, infrastructure engineering, etc., can solve the problems that hinder the lifting of underground assembly components, and achieve the effect of large support rigidity, high bearing capacity and large bearing span

Inactive Publication Date: 2020-05-01
王琪
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As the underground prefabricated structure advances, the dense support beams hinder the lifting of the underground prefabricated components

Method used

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  • Fabricated inner supporting system composed of steel pipes and H type steel standard parts
  • Fabricated inner supporting system composed of steel pipes and H type steel standard parts
  • Fabricated inner supporting system composed of steel pipes and H type steel standard parts

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0047] Example 1. A support structure composed of steel pipe support beams without column support and steel string beams.

[0048] From figure 1 It can be seen that when the length of the steel pipe support beam 3 is not greater than 25 meters, when the large bending section modulus of the steel pipe support beam 3 itself can sufficiently resist the deflection effect caused by its own weight and construction load, and maintain stability, There will be no posts. The supporting structure is assembled and combined with the steel string beam 2, the direction-changing rectangular force transmission key 25 at both ends, and the steel pipe supporting beam standard part 3. Utilizing the T-shaped connection key 33, the connection between the two steel pipe support beams 3 is realized to form a whole. The two ends of the steel pipe support beam 3 are respectively equipped with a load retaining device 4 and a variable cross-section connecting key 5 , realizing the prestressing of the s...

example 2

[0049] Example 2: Steel pipe support beams and direction-changing triangular force transmission keys are assembled into a figure-eight support system

[0050] From Figure 9 It can be seen that the steel pipe support beam 3 is assembled into a figure-eight support system through a 135-degree direction-changing triangular force transmission key. In this support system, the connection between the eight-shaped support beam 3 and the purlin 1 is realized through a 45-degree direction-changing triangular force transmission key 24, which solves the problem of equal length and equal stiffness of the oblique support beam 3 .

example 3

[0051] Example 3. Prestressed support structure with steel pipe support beams and steel chord beams distributed at an obtuse angle

[0052] From Figure 10 It can be seen that the two sets of inclined steel pipe support beams 3 and the steel string beams 2 form a prestressed support structure distributed in an isosceles right triangle. The support system is mainly composed of steel pipe girder 3, steel string beam 2, 135-degree variable direction triangular force transmission key 24, T-shaped connection key 3, loading force retention device 4 and variable cross-section connection key 5, etc. A group of vertical steel pipe support beams 3 connects two groups of inclined steel pipe support beams 3 through 135-degree direction-changing triangular force transmission keys. , thereby reducing the axial pressure of the purlins of the steel chord beam 3 .

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Abstract

The invention discloses a fabricated inner supporting system composed of steel pipes and H type steel standard parts. The supporting system is composed of steel pipe support and H type steel standardparts, a steel chord beam, an H type steel purlin standard part, variable-section connecting keys, direction-changing force transfer keys, a connecting beam, prestress loading devices, T type assemblykeys, cross-shaped assembly keys and the like. The steel chord beam is formed by assembling the H type steel standard parts, a wire rope and the direction-changing force transfer keys, the span of the steel chord beam reaches 12 m-65 m, and the direction-changing force transfer keys are distributed at the two ends of the steel chord beam. The direction-changing force transfer keys and the steel support standard parts are connected through bolts, and the steel pipe support standard parts and the steel purlin standard part are assembled through bolts via the connecting keys. The supporting system is easy and rapid to mount and has environment-friendly and innovative technical characteristics and important social and economic value.

Description

technical field [0001] The invention relates to the technical field of civil engineering, and relates to a steel structure internal support system for deep foundation pit support. Background technique [0002] With the continuous development and utilization of urbanization and underground space, the construction of high-rise buildings, the construction of large-scale municipal facilities, and the development of a large number of underground spaces and urban rail transit have promoted the support structure of foundation pit engineering to fast, energy-saving, green and standard development in the direction of component-assembled structures. At present, foundation pit engineering gradually presents the characteristics of rapid development, wide distribution area, large foundation pit area, irregular shape, deep excavation, and complex surrounding environment. More and more large-scale deep foundation pit projects need safe, convenient, fast and economical support technology, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D17/04
CPCE02D17/04
Inventor 张越
Owner 王琪