A construction method for vertical section type dismantling of inner support

Abstract

A vertical section-type dismantling inner support construction method includes designing the starting point for dismantling the upper inner support structure, constructing the lower main structure within the scope of the first new construction section, and erecting a dismantling frame when the concrete strength reaches 80%, Remove the upper inner support structure within the scope of the first new construction section upward, and construct the lower main structure within the scope of the second new construction section. When the concrete strength reaches 80%, erect and dismantle the frame body; dismantle the scope of the second new construction section The inner support structure of the upper layer is completed until the construction of all the lower layer structural plates and the lower layer replacement support structure in the foundation pit is completed, and the upper inner support structure is completely dismantled. The present invention is to dismantle the typical concrete corner brace support, the force characteristics are very clear, and the force of each support block is relatively independent, so as long as the dismantling of the support can satisfy the stability and safety of the force during dismantling, the section-type dismantling construction can be realized. , which can shorten the absolute construction period of support removal.

Description

technical field [0001] The invention belongs to the field of deep foundation pit support, in particular to a construction method for dismantling an inner support in a vertical section type. Background technique [0002] With the increasing shortage of urban land and the continuous development of high-rise and super high-rise buildings, deep foundation pits are more and more widely used in urban construction. However, the demolition of the inner support of the deep foundation pit has always been a major difficulty in the project, and it is a key process that restricts the progress of the project. The traditional demolition process of the inner support is generally to remove the upper side of the layer after the strength of the main structure of each layer reaches 80% after the construction is completed. The inner support, the main structure and the inner support all need to be constructed and demolished on the whole floor. When the area of ​​the main structure is large, it i...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a construction method for removing internal support in vertical sections, to solve the technical problems that the existing deep foundation pit internal support removal method restricts the progress of the project and affects economic benefits

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