Closed demolition blasting method for internal concrete reinforcement bracing of basement foundation ditch

A basement and foundation pit support technology, which is applied in excavation, underwater structures, infrastructure engineering and other directions, can solve the problems of long time, many procedures, affecting the construction progress of the basement structure, etc., and achieves low blasting noise and shortens the construction period. Effect

Active Publication Date: 2009-07-08
CHINA MCC20 GRP CORP
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AI Technical Summary

Problems solved by technology

The disadvantages of conventional construction methods are as follows: ①. The subsequent construction of the basement structure can only be carried out after large-scale removal of the inner support of the concrete. The construction progress of the basement structure will be affected if there are many procedures and a long time to open and remove the inner support of the concrete in a large area.

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  • Closed demolition blasting method for internal concrete reinforcement bracing of basement foundation ditch

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Embodiment Construction

[0023] Please refer to figure 1 , a basement foundation pit concrete internal support closed blasting demolition method, the basement 3 foundation pit adopts a row of piles and slab walls 1 type and a concrete internal support 2 foundation pit support system, 5 in the figure is a support column, the demolition method for:

[0024] First of all, familiarize yourself with the foundation pit support and structural drawings, sort out the relationship between the internal support of the foundation pit support and the structural column wall, and find out the overlapping parts that need to be dealt with. If too many supports overlap with internal independent columns, it is advisable to communicate with the support design unit in the early stage, and adjust the position of the internal support beams appropriately without affecting the safety of foundation pit support.

[0025] (1) Use basement backfill and force belt to complete structural support.

[0026] For support replacement, ...

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Abstract

The invention relates to basement construction, in particular to a method for disassembling an inner concrete support of a basement foundation pit. The method for disassembling the inner concrete support of the basement foundation pit through sealed explosion comprises that: the basement foundation pit adopts a row-pile and siding wall type inner concrete support foundation pit supporting system. The disassembly method mainly comprises the following steps: support replacement of a structure, namely utilizing backfill of a basement and a force transferring belt to complete support replacement of the structure; disassembly of partial inner concrete support for supporting the foundation pit; construction of a basement structure on the force transferring belt; and disassembly of the inner concrete support through sealed explosion. The method for disassembling the inner concrete support of the basement foundation pit through sealed explosion shortens the construction period and guarantees safety.

Description

technical field [0001] The invention relates to basement construction, in particular to a method for removing the concrete inner support of a basement foundation pit. Background technique [0002] When carrying out basement construction in soft soil areas, pile row and slab wall type plus concrete inner support foundation pit support system are widely used. The concrete inner support is a temporary structure, which needs to be dismantled when the construction of the basement structure reaches a certain stage. The construction sequence during conventional construction is: after the construction of the lower basement structure of the inner concrete support and the replacement of the support, the large area is opened and the inner support of the concrete is removed, and then the subsequent construction of the basement structure is started. The disadvantages of conventional construction methods are as follows: ①. Subsequent construction of the basement structure can only be car...

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Application Information

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IPC IPC(8): E02D29/045E02D17/04
Inventor 胡开彪尹亚鸿
Owner CHINA MCC20 GRP CORP
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