广州地区复杂地层深基坑工程TRD工法的设计与实践  

Design and Practice of Trench Cutting Re-mixing Deep Wall Method for Deep Foundation Pit Engineering with Complex Stratum in Guangzhou

作　　者：王一兆 李志利 隋耀华 张思远 徐世杨 冯德銮 WANG Yizhao;LI Zhili;SUI Yaohua;ZHANG Siyuan;XU Shiyang;FENG Deluan(Guangzhou Metro Design&Research Institute Co.,Ltd.Guangzhou 510010,China;Guangdong University of Technology Guangzhou 510006,China)

机构地区：[1]广州地铁设计研究院股份有限公司,广州510010 [2]广东工业大学,广州510006

出　　处：《广东土木与建筑》2024年第1期16-19,28,共5页Guangdong Architecture Civil Engineering

基　　金：国家自然科学基金资助项目(52078142);广东省城市轨道交通工程建造新技术企业重点实验室资助(2017B030302009);广州市院士专家工作站资助(2021创新中心030号)。

摘　　要：广州地铁某停车场U型槽基坑工程是广州地区首个采用TRD工法的基坑工程,详细介绍了TRD工法在广州地区复杂地层基坑工程中的设计方法和实施效果。基坑工程的实施过程和监测结果表明:水泥掺量为30%的TRD工法构筑的等厚度水泥土搅拌地下连续墙墙体的28 d无侧限抗压强度大于2.4 MPa,挡土和止水效果良好;内插H型钢TRD工法基坑支护结构对基坑位移和周边地面沉降的控制安全可靠,可为同类工程项目提供借鉴与参考。The U-tank foundation pit project of a parking lot of Guangzhou Metro is the first foundation pit project using the TRD method in Guangzhou,which introduces in detail the design method and implementation effect of the TRD method in the foundation pit project of complex strata in Guangzhou.The implementation process and monitoring results of the foundation pit project show that:the 28 d unconfined compression strength of a wall constructed by the TRD method with 30% cement admixture exceeds 2.4 MPa for a wall of equal thickness with cement soil mixing,its soil retaining and water stop effect are effective;the foundation pit supporting structure of the interpolated H-shaped steel TRD method is safe and reliable for foundation pit displacement and surface settlement control,which can provide a reference for similar projects.

关 键 词：TRD工法 复杂地层 深基坑 支护 挡土止水结构 

分 类 号：TU472[建筑科学—结构工程]