城市建筑2025，Vol.22Issue(11)：137-141,154,6.DOI:10.19892/j.cnki.csjz.2025.11.30
超深地下连续墙施工问题及应对研究
Research on Construction Problems and Countermeasures of Ultra-Deep Underground Diaphragm Wall
摘要
Abstract
Based on a deep foundation pit project in Shanghai,the paper systematically studies the construction problems of ultra deep diaphragm wall with cross steel plate joints and their corresponding causes.Through analysis and study,it is found that the construction problems of underground disphragm wall mainly focus on the deformation of cross steel plate,the flow around concrete,the failure of ultrasonic detection,and so on.The results show that the failure frequency of ultra deep wave detection and cross plate deformation is high,and the incidence is as high as 39.0%and 37.3%respectively.The deformation of cross steel plate can be divided into six deformation types:outward inclination,multi-stage bending,bending,inward bending,outward bending and fracture.The six deformation types have obvious characteristics.The main factor causing the six deformation types is force balance.Among them,reducing the resistance of the reinforcement cage in the groove and maintaining the pressure balance on both sides of the joint are the most critical.In addition,the causes of flow around concrete and other problems are analyzed.Finally,the countermeasures for various problems are given,which can provide guidance for the construction of similar projects.关键词
超深地下连续墙/十字钢板弯曲/混凝土绕流/垂直度Key words
ultra-deep underground diaphragm wall/cross steel plate bending/concrete bypassing/verticality分类
建筑与水利引用本文复制引用
贾尚华..超深地下连续墙施工问题及应对研究[J].城市建筑,2025,22(11):137-141,154,6.基金项目
国家重点研发计划(2023YFE0202400) （2023YFE0202400）
上海市青年科技启明星计划(24QB2702200) （24QB2702200）
