Movable internal supporting device for foundation pit support and using method of movable internal supporting device

Abstract

The invention discloses a movable internal supporting device for foundation pit support and a using method of the movable internal supporting device, and belongs to the technical field of subway foundation pit support facilities. The movable internal supporting device and the using method are aim to solve the problems that the efficiency is low and the coordination difficulty is large in the construction process of an existing subway. The movable internal supporting device for foundation pit support includes an internal supporting structure body, the internal supporting structure body is placed in a subway foundation pit and plays the temporary supporting effect of subway foundation pit support, a construction space is provided for subway construction, a steel supporting structure is additionally arranged near the construction end, and the safety is improved during construction. The device can temporarily replace the steel supporting structure near the construction end, the steel supporting structure can be removed at the same time during concrete solidification of the gap between a fabricated subway member and a foundation pit support structure of the subway foundation pit, the construction speed is greatly increased, and the construction cycle is decreased; and the device is provided with a monorail crane to facilitate the disassembly and installation of the steel supportingstructure during construction, and the construction efficiency can be further improved.

Description

technical field [0001] The invention relates to a movable inner support device for foundation pit support and a method for using the same, and belongs to the technical field of subway foundation pit support facilities. Background technique [0002] In the process of subway construction, due to the constraints of surrounding pipelines, buildings or structures, ground transportation, soil geology and other factors, and with the continuous expansion of the scale and depth of the subway, the requirements for controlling the deformation of the side wall of the foundation pit are getting higher and higher. Therefore, the requirements for foundation pit support are becoming more and more stringent. As an important part of the foundation pit engineering support, the steel purlin plays a huge role. Most of the steel purlins are mainly composed of two I-beams and steel plates on both sides of the I-beam. The steel support is fixed on the steel fence. On the purlin, the steel purlin i...

AI Technical Summary

Problems solved by technology

[0003] However, in the construction stage, the steel support structure at the corresponding position needs to be removed before construction can be carried out. Since the steel support structure is welded and connected, it takes a long time to remove it, and in order to ensure safety, it is not easy to dismantle too many steel support structures at one time, which seriously affects the construction. efficiency

Moreover, the use of the gantry during the removal of the steel support has the problems of heavy equipment, complicated design and high cost, and the use of a crane has problems such as too long boom, difficult lifting, and difficult coordination.

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