Construction method for support part to early dismount for super large area deep foundation pit

Abstract

The invention belongs to the building construction technology field, and discloses a construction method used for early-dismantling the supporting local part of a super large excavation. The method includes the following steps: firstly, according to the construction area of the high part, the concrete first horizontal steel support influencing the high rise building construction is determined, and is taken as an object to be dismantled; secondly, after a foundation base plate is completed, a bracing bar is arranged on the lower side of the horizontal support to be dismantled; and thirdly, after the supporting bar is pre-stressed, the relevant first horizontal steel support to be dismantled in the step one is dismantled. Adopting the construction method of the invention can carry out balanced engineering construction on a continuous basis, save energy and reduce energy consumption, thereby laying a good foundation for accomplishing the construction period in advance or on time, and providing possibility to the early construction of the local high part of the super large excavation.

Description

Construction method of local early demolition of support for super large area deep foundation pit technical field The invention belongs to the technical field of building construction, and relates to a construction method, in particular to a support partial early demolition construction method for a super-large-area deep foundation pit. Background technique At present, in the field of construction, we often encounter buildings that need to be constructed separately due to different underground structures. The more common underground structure of buildings is the combination of underground garages and basements of high-rise buildings. High-rise basements must be removed after the first support of the foundation pit is removed. Construction, due to the large construction area of ​​the underground garage, it will take a long time from excavation to the completion of the underground structure of the garage, which will inevitably affect the construction progress of the high-rise...

AI Technical Summary

Problems solved by technology

At present, in the field of construction, we often encounter buildings that need to be constructed separately due to different underground structures. The more common underground structure of buildings is the combination of underground garages and basements of high-rise buildings. High-rise basements must be removed after the first support of the foundation pit is removed. Construction, due to the large construction area of ​​the underground garage, it will take a long time from excavation to the completion of the underground structure of the garage, which will inevitably affect the construction progress of the high-rise building