不同土体加固方式对船闸基坑支护结构性状的影响分析  

Effect Analysis of Soil Reinforcement on the Characteristics of Support Structure of Foundation Pit of Shiplock

作　　者：吴超瑜 陈文霞 潘健[2] WU Chaoyu;CHEN Wenxia;PAN Jian(Guangdong Yuantian Engineering Co.,Ltd,Guangzhou 511340,China;School of Civil Engineering and Transportation,South China University of Technology,Guangzhou 510640,China)

机构地区：[1]广东省源天工程有限公司,广东广州511340 [2]华南理工大学土木与交通学院,广东广州510640

出　　处：《广东水利水电》2021年第1期68-74,共7页Guangdong Water Resources and Hydropower

摘　　要：以某船闸开挖的带撑双排地下连续墙支护结构为对象,采用土体卸荷条件下的HS有限元模型,分析“仅主动区加固”、“仅墙间土加固”、“仅被动区加固”、“主动区+墙间土加固”、“被动区+墙间土加固”5种土体不同加固方式对船闸基坑支护结构和邻近船闸的影响。结果表明:“仅主动区加固”控制后排墙和邻近船闸侧向位移效果较好;“仅墙间土加固”控制前排墙侧向位移效果较好;“仅被动区加固”控制前排墙和后排墙侧向位移效果较好;相对于“主动区+墙间土加固”,“被动区+墙间土加固”控制支护结构侧向位移较好,但控制邻近船闸的侧向位移效果稍逊。Based on the foundation pit of shiplock with the braced retaining structure with double-row diaphragm wall,adopting Hardening-Soil finite element model under the condition of soil mass unloading,five reinforcement models that causes the influences on deformation of the support structure of the foundation pit and the shiplock were studied,including“reinforcement in active zone”,“reinforcement in inter-wall zone”,“reinforcement in passive zone”,“reinforcement in active and inter-wall zone”,“reinforcement in passive and inter-wall zone”.The results show that“reinforcement in active zone”has better effect on controlling lateral displacement of rear wall and adjacent lock.The effect of“reinforcement in inter-wall zone”control the lateral displacement of the front wall is better.“Reinforcement in passive zone”can effectively reduce the lateral displacement of front wall and rear wall.Compared with“reinforcement in active area and inter-wall zone”,“reinforcement in passive and inter-wall zone”has a better effect on the reduction of lateral displacement of the supporting structure,but a less effective effect on the reduction of lateral displacement of the adjacent shiplock.

关 键 词：船闸基坑 双排地下连续墙 土体加固 

分 类 号：U641[交通运输工程—船舶及航道工程] TV551.4[交通运输工程—船舶与海洋工程]