连续多幅异形(T形)槽地下连续墙施工关键技术

Key Technology in Construction of Continuous Multi Shaped(T) Groove Underground Diaphragm Wall

随着"两墙合一"的地下连续墙围护结构在城市综合体地下空间开发中应用越来越普遍,超深、超大基坑"两墙合一"的地下连续墙围护体的外围整体形状主要受制于开发地块的形状、地下空间结构体的形状、结构受力的影响,以及周边环境的制约等因素,常需设置较大范围的不规则异形槽地墙围护体。该文结合具体工程实例着重论述某超深、超大基坑工程连续17幅"T"型槽地墙围护体的施工关键技术,为类似工程施工提供有价值的实践经验。

With the more and more common application of the 'two walls into one' underground diaphragm wall enclosure structure in the development of urban complex underground space,the peripheral overall shape of over-deep and over-large foundation pit 'two walls into one' underground diaphragm wall enclosure is mainly restricted by the shape of developed land,the shape of underground space structure,the influence of structure stress and the factors of surround environmenL It is required to construct the larger scale of irregular shaped wall enclosure.According to a practical engineering case,the article focuses on discussion of the key technology in the construction of 17-piece 'T-shaped' groove wall enclosure of an over-deep over-large foundation pit project Its valuable practical experience can be referred for the construction of the similar projects.