Stage construction basement support change method using underground continuous wall as separation containment

Abstract

The invention provides a stage construction basement support change method using an underground continuous wall as separation containment. The method comprises the following steps that: 1, a separation containment structure using the underground continuous wall as a body is built, and in addition, pre-buried sectional steel is buried on the underground wall; 2, first-stage basement support change is carried out, support change sectional steel is welded at one end of the pre-buried sectional steel, and the other end of the support change sectional steel is cast with an underground slab of the first-stage basement; 3, secondary second-stage basement support change is carried out, support change sectional steel is welded at the other end of the pre-buried sectional steel in the same way, and a basement slab of the second-stage basement is cast at the other end of the support change sectional steel; 4, the underground continuous wall is dismounted, the pre-buried sectional steel is preserved, the connecting steel bars are tied and bundled, and concrete is cast, so the first-stage basement and the second-stage basement are connected. The support change problem of the front-stage construction basement and the back-stage construction basement can be perfectly solved, the support change effect is good, in addition, the basement structure can be smoothly built, and the construction is convenient.

Description

Technical field [0001] The invention relates to the field of building construction, in particular to a phased construction basement replacement method using an underground continuous wall as a separate enclosure. Background technique [0002] In the basement construction of a building construction project, due to site, safety or capital reasons, it is often necessary to carry out phased construction. In phased construction, the underground continuous wall is often used as the partitioned enclosure. After the construction is completed, the continuous wall is removed, and the basement of the two phases is connected. Into one. In order to ensure that the basement can be connected to each other as a whole, it is necessary to deal with the problem of support replacement in the early and late construction parts. At present, the method of reverse construction is usually adopted, that is, as the construction progresses, the underground continuous wall is removed from top to bottom to co...

AI Technical Summary

Problems solved by technology

At present, the method of reverse work is usually adopted, that is, the underground diaphragm wall is gradually removed from top to bottom as the construction progresses, so that the front and later basements are connected, and the construction is more troublesome.

Images