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Static cutting method for concrete structure

A technology of concrete structure and cutting method, which is applied in the direction of building construction, building maintenance, construction, etc. It can solve the problems of changing building functions and difficulty in meeting the requirements of use functions, etc., and achieves fewer operators, high construction efficiency, and comprehensive economic benefits. Improved effect

Pending Publication Date: 2021-05-14
中铁一局集团电务工程有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] With the rapid development of my country's economic construction, a considerable part of the existing buildings are difficult to meet the current functional requirements due to the change of building functions, and need to be repaired and remodeled.

Method used

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  • Static cutting method for concrete structure
  • Static cutting method for concrete structure
  • Static cutting method for concrete structure

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Experimental program
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Effect test

Embodiment

[0047] Static cutting is a mechanized operation with high labor intensity in the current crushing and demolition field. Its technical content has far exceeded the traditional concept of mechanical crushing. On the other hand, at a certain level of operation, not only its construction efficiency is high, but also the number of operators can be greatly reduced, which is conducive to the improvement of comprehensive economic benefits. Taking the structural reconstruction of Xidu Station, the southern extension of Shanghai Traffic Line 5 as an example, the reconstruction area is 429m². The specific cost analysis is as follows:

[0048] 1) Traditional breaking method (in order to ensure that the original structure is not damaged, it cannot be broken with an excavator, and it needs to be broken manually)

[0049] Labor costs (4 construction workers, 1 team leader):

[0050] Each person can remove 1.5m² per working day, and 6m² per working day. It takes about 72 working days to comp...

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Abstract

A static cutting method for a concrete structure comprises the following steps that construction machinery is prepared, a construction part is strictly investigated, whether cutting conditions are met or not is determined, and temporary supporting is conducted on the periphery needing to be cut through steel pipes; a specific cutting part is determined according to an original drawing and a construction scheme, lofting and branching are conducted on the part needing to be cut, cutting lines are determined, and the weight of each cutting block is about 200 kg; an excessive cutting value is calculated; as the shape of a cutting saw blade and the shapes of the cutting blocks decide that an excessive cutting phenomenon is inevitable during cutting, and corner pretreatment must be performed on the pre-cutting inner side in a mode of being tangential to the cutting lines; according to the placed cutting positioning line, a reasonable position is selected to drill a hole in a concrete entity, and an equipment base is fastened through an expansion bolt; and a reasonable cutting mode is selected, and the cut blocks are safely conveyed to a place with a large bearing load from a temporary stacking place. The static cutting method has the characteristics of low noise, no pollution, mechanization, no damage, economical efficiency and the like.

Description

technical field [0001] The invention belongs to the technical field of slab construction, and in particular relates to a static cutting method for concrete structures. Background technique [0002] With the rapid development of my country's economic construction, a considerable part of the existing buildings cannot meet the current functional requirements due to changes in building functions, and need to be repaired and renovated. Static cutting is to use hydraulic or electric static cutting system to transform the existing structure to meet the requirements of use. It has the characteristics of no vibration, high safety, fast construction speed and no dust. Therefore, it is widely used in the renovation of existing building structures. SUMMARY OF THE INVENTION [0003] The purpose of the present invention is to provide a static cutting method for concrete structures, which is suitable for the reconstruction of concrete structures, and has the characteristics of low nois...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B28D1/04B28D1/08B28D1/14E04G23/02
CPCB28D1/04B28D1/088B28D1/146E04G23/02
Inventor 骆晓王好福王凯刘禄张祥
Owner 中铁一局集团电务工程有限公司
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