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Supporting structure for reducing slenderness ratio of latticed column of deep foundation pit and construction method

A supporting structure and construction method technology, which is applied in basic structure engineering, excavation, construction, etc., can solve the problems of excessive slenderness ratio and increased slenderness ratio of lattice columns, so as to reduce the slenderness ratio and construction cost , The effect of easy disassembly and assembly

Pending Publication Date: 2021-08-31
GUANGDONG CONSTR ENG GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

With the demolition of concrete inner supports, the slenderness ratio of the lattice column continues to increase, and even the slenderness ratio exceeds the limit

Method used

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  • Supporting structure for reducing slenderness ratio of latticed column of deep foundation pit and construction method
  • Supporting structure for reducing slenderness ratio of latticed column of deep foundation pit and construction method

Examples

Experimental program
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Embodiment 1

[0029] refer to figure 1 and figure 2 , a support structure that reduces the slenderness ratio of lattice columns in deep foundation pits, and is used for supporting concrete building structures in building foundation pits. The support structure includes a lattice column 1, a support form 2 and an elastic adjustment mechanism 3, the support form 2 is arranged on the periphery of the lattice column 1, the elastic adjustment mechanism 3 is supported between the lattice column 1 and the support form 2, and The formwork 2 is braced tightly on the lattice column 1, so that the formwork of the concrete structure and the like are supported on the lattice column 1 through the tightness adjusting mechanism 3, thereby facilitating pouring of concrete. This support structure is composed of angle steel, screw rods, and turnbuckle bolts. During the construction of the floor formwork, the support form is installed. 3. The tightness of the installation of the support structure can be adju...

Embodiment 2

[0035] refer to figure 1 and figure 2 , a construction method of a support structure that reduces the slenderness ratio of a deep foundation pit lattice column in embodiment one, comprising the steps of:

[0036] S1, formwork installation, first install formwork 21, then install wooden square 22 on the inside of formwork 21 (i.e. the side outside formwork 21 close to lattice column 1);

[0037] S3, angle steel installation, install angle steel 4 respectively on the outside of the four corners of the lattice column and the inside of the four corners of the wooden square 22 when the deep foundation pit is constructed;

[0038] S4, the tightness adjustment mechanism is installed, the first screw rod 32, the second screw rod 33 one ends are respectively installed on the angle steel 4 on the inner side of the four corners of the wooden square 22 and the outer side of the four corners of the lattice column, and the first screw rod 32, the second screw rod 33 other ends are respect...

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Abstract

The invention discloses a supporting structure for reducing the slenderness ratio of a latticed column of a deep foundation pit and a construction method. The supporting structure comprises the latticed column, a supporting mold and a tightness adjusting mechanism, wherein the supporting mold is arranged on the periphery of the latticed column, the tightness adjusting mechanism is supported between the latticed column and the supporting mold and tightly supports the supporting mold on the latticed column. In addition, the construction method of the supporting structure for reducing the slenderness ratio of the latticed column of the deep foundation pit comprises the steps of supporting formwork installation, angle steel installation, tightness adjusting mechanism installation, tightness adjusting mechanism adjustment and dismantling operation. The supporting structure is easy and convenient to install, when the latticed column is dismantled, the supporting formwork is directly dismantled, the whole latticed column or the latticed column is cut off in a segmented mode, hoisting tools such as a tower crane are utilized, the latticed column is directly hoisted away from the reserved hole, the slenderness ratio of the latticed column after the concrete inner support is dismantled can be effectively reduced in time, the construction procedure when the latticed column is dismantled is reduced, the construction cost is reduced, and the safety of construction in the foundation pit is ensured.

Description

technical field [0001] The invention relates to the technical field of building support structures, in particular to a support structure and a construction method for reducing the slenderness ratio of lattice columns in deep foundation pits. Background technique [0002] With the continuous development and improvement of construction technology, foundation pits are getting deeper and deeper. Concrete inner support + support pile (wall) is the most common support form for deep foundation pits. The middle column of concrete inner support is usually welded with 4-leg equilateral angle steel With the construction of the underground structure, the concrete inner support needs to be gradually removed from the bottom to the top. In order to ensure the safety of the foundation pit, the support needs to be replaced. With the demolition of the concrete inner support, the slenderness ratio of the lattice column continues to increase, and even the slenderness ratio exceeds the limit. ...

Claims

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Application Information

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IPC IPC(8): E02D17/04E02D17/02E02D15/02
CPCE02D17/04E02D17/02E02D15/02
Inventor 黄健陈建航周宇李惠娇邓智文张富森李勇军方炳亮叶展鹏
Owner GUANGDONG CONSTR ENG GRP