Construction method for removing inner support in vertical section mode

Abstract

The invention relates to a construction method for removing an inner support in a vertical section mode. The construction method comprises the steps of designing a dismantling starting point of an upper-layer inner support structure, constructing a lower-layer main body structure in the range of a first new construction section, erecting a dismantling frame body when the concrete strength reaches 80%, dismantling the upper-layer inner support structure in the range of the first new construction section upwards, constructing a lower-layer main body structure in the range of a second new construction section, erecting and dismantling a frame body when the concrete strength reaches 80%, and dismantling the upper-layer inner support structure in the range of the second new construction section till all the lower-layer structural plates and the lower-layer support changing structures in the foundation pit are constructed, so that all the upper-layer inner support structures are dismantled. According to the construction method, typical concrete angle brace supports are dismantled, the stress characteristics are quite clear, stress of all the supports is relatively independent, and therefore when the supports are dismantled, as long as the stress stability and safety during dismantling can be met, sectional dismantling construction can be achieved, and the absolute construction period for dismantling the supports can be shortened.

Description

technical field [0001] The invention belongs to the field of deep foundation pit supports, in particular to a construction method for removing internal supports in vertical sections. 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 internal support removal of deep foundation pits has always been an important and difficult point in the project, and it is a key process that restricts the progress of the project. The traditional internal support removal process is generally to remove the upper side of the layer after the main structure of each layer is completed and the strength reaches 80%. The inner support, the main structure and the inner support all need to be constructed on the whole floor and removed from the whole floor. When the area of ​​the main structure is large, it is necessary to...

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

Images