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A support system suitable for island support and its application

A support system and steel pipe support technology, applied in construction, excavation, infrastructure engineering, etc., can solve the problems of uneven force, exceeding the warning value, and unable to meet the requirements of basin excavation.

Active Publication Date: 2020-10-30
NANJING TECH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this method of setting corbels above the structural roof can delay the lateral displacement of the soil behind the supporting piles to a certain extent, the monitoring data of engineering examples show that the lateral displacement of the soil behind the piles is too large. Large, often exceeding the warning value, its structural type cannot meet the requirements of basin excavation in terms of rigidity
Under the influence of soil creep, the steel pipe support cannot fit closely with the side of the corbel, resulting in uneven force, and cannot effectively control the lateral displacement of the support pile
The design scheme of corbels arranged on the top of the roof causes the extension area of ​​the corbels to be too large, causing the structural roof to be damaged by bending, so the design scheme of the corbels is improved

Method used

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  • A support system suitable for island support and its application
  • A support system suitable for island support and its application
  • A support system suitable for island support and its application

Examples

Experimental program
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Effect test

Embodiment 1

[0033] A kind of joint device, its inside is hollow, leaves a notch opening 9 in the middle of the tail, the upper and lower width of the notch opening can be produced according to the actual thickness of the floor slab 7, so that it can fit the floor slab 7 more. However, for the reusability and easy installation of the joint device 4, the upper and lower widths of the groove mouth 9 can be appropriately widened, so that the reusability rate is improved and the convenience of hoisting construction is increased. A steel plate 11 is welded at the contact between the notch opening 9 and the main structure (the corbel 6 and the floor 7). The thickness of the steel plate 11 should be thinner from the perspective of economy and applicability, because its main function is to seal the tail area. Figure 4 The shaded area in is the welded steel plate 11.

[0034] The head flange 2 of the joint device 4 is connected with the reusable steel pipe support 10 through bolts 1 to achieve the...

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Abstract

The invention discloses a supporting system suitable for island type support and an application thereof. The supporting system comprises a steel pipe support, a joint device, reinforced concrete brackets and a floor board which are symmetrically arranged up and down. The joint device comprises a groove opening and a flange connecting piece, the steel pipe support and the joint device are connectedby flanges, and steel plates are welded at the contact positions of the groove opening and the floor board and brackets symmetrically arranged up and down. And the floor board is embedded into the groove opening through hoisting. The steel pipe support and the joint device in the supporting system is convenient to install, reusable, cost-saving, green and environment-friendly, the main structure(the reinforced concrete brackets and the floor board symmetrically arranged up and down) in the supporting system has large rigidity, can effectively control the lateral movement of a supporting pile, is safe and stable, and has high reliability.

Description

technical field [0001] The invention relates to a support system of an island-type support in a foundation pit support type, and belongs to the technical field of foundation pit support structures. Background technique [0002] With the development of deep foundation pit technology, various types of support emerge in an endless stream. For example: the support type of corner braces around and opposite braces in the middle; the support type of steel support opposite braces; the support type of ring beam support; the support type of basin excavation + island support. Among them, the support types for basin excavation to reserve side slope back pressure can be divided into two types: 1. straight work in the central area + reverse work in the surrounding area; 2. straight work in the central area + straight work in the surrounding area. In the support scheme of basin excavation + island support in the central area + parallel operation in the surrounding area, the improved metho...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02D17/04
CPCE02D17/04
Inventor 黄春霞李杰隋志龙王洪凯彭琪黄敏刘畅
Owner NANJING TECH UNIV
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