Asynchronous decoupling construction method for large foundation pit coupling inner supporting system

Abstract

The invention relates to the technical field of building construction, in particular to an asynchronous decoupling construction method for a large foundation pit coupling inner supporting system. The asynchronous decoupling construction method comprises the following steps of working condition analysis, specifically, analyzing the structural working condition of a basement according to a building construction solution; decoupling design, specifically, correspondingly setting decoupling models according to the supporting systems at different positions; decoupling reinforcement measure construction, specifically, conducting reinforcement construction on the weak position of a supporting structure stress system; collision point underpinning construction, specifically, conducting collision inspection of the basement structure and an inner supporting latticed column through a BIM technology, proposing an underpinning construction solution according to the collision inspection result of the latticed column and the structural beam, and conducting construction according to the underpinning construction solution; and dismantling the inner support by a comprehensive method. According to the asynchronous decoupling construction method, many factors restricting the construction period during dismantling of the coupling inner support are overcome, the construction efficiency is improved, energy conservation and environmental protection are achieved, and the resource recovery benefit is improved.

Description

technical field [0001] The invention relates to the technical field of building construction, in particular to an asynchronous decoupling construction method of a coupling inner support system of a large foundation pit. Background technique [0002] In recent years, large-scale underground spaces have been more developed and utilized. Various underground projects such as basements, underground shopping malls, parking lots, etc. are gradually getting more and more constructions. Among various foundation pit support structures, the internal support support system is often used in deep and large foundation pits. The internal support support system has high rigidity, small deformation of the foundation pit, and is not limited by the shortage of surrounding sites. It can ensure the safety of basement construction, foundation construction, and surrounding public facilities such as buildings, subways, roads, and underground pipelines. The ring support system is a commonly used fo...

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Problems solved by technology

[0003] The existing ring support system has the problem of low demolition efficiency when removing the inner support of the concrete. Before the current work is completed, the next work cannot be carried out at all, and continuous construction at a high rate cannot be achieved, which greatly prolongs the construction period. To meet the needs of the construction unit for continuously improving the construction period, and the existing internal support removal methods have large mechanical vibration, large blasting vibration, large dust, large noise, large resource consumption, and the surrounding of the foundation pit caused by the stagnation of the main body construction Environmental safety hazards, these harmful effects have largely restricted the development of the field of internal support removal

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