超深基坑地连墙十字钢板接头变形控制方法  

Deformation Control Method for Cross-steel Joints of the Diaphragm Wall in Super Deep Foundation Pits

作　　者：伍军[1,2] 邓稀肥 WU Jun;DENG Xifei(Central South University,Changsha,410083;China Railway Group Limited,Beijing,100039;China Tiesiju Civil Engineering Group Co.Ltd.,Hefei,230023)

机构地区：[1]中南大学,长沙410083 [2]中国中铁股份有限公司,北京100039 [3]中铁四局集团有限公司,合肥230023

出　　处：《现代隧道技术》2021年第2期204-207,237,共5页Modern Tunnelling Technology

摘　　要：文章以杭州地铁6号线二期火车东站超深基坑群地连墙施工为工程案例,总结分析了地连墙十字钢板接头变形类型及成因,介绍了增设钢板接头斜拉筋、钢板纵向接缝帮焊补强、优化钢板接头外侧回填材料的综合变形控制方法,现场实践验证了该方法的有效性。该成果对国内类似超深基坑地连墙钢筋笼结构设计和施工具有重要的参考价值。Taking the construction of diaphragm walls in the super deep foundation pit group at East Railway Sta⁃tion of Hangzhou Metro Line 6 Phase II as the example,this paper summarizes and analyzes the types and causes of the deformation of the cross-steel joints of the diaphragm wall,and introduces the comprehensive deformation con⁃trol method composed of adding diagonal bars to the steel plate joints,welded reinforcing the longitudinal steel plate joints and optimizing the backfill materials outside the steel plate joint.The effectiveness of the method is verified by the field practice,providing important reference value for the design and construction of steel reinforcement cag⁃es of similar diaphragm walls in the super deep foundation pits in China.

关 键 词：超深地连墙 十字钢板接头 变形类型 控制方法 

分 类 号：TU758.11[建筑科学—建筑技术科学]