圆形深基坑地连墙侧向变形特性分析  

Analysis of lateral deformation characteristics of underground diaphragm wall in circular deep foundation pit

作　　者：李克锋 张莲花[1] Li Kefeng;Zhang Lianhua(Chengdu University of Technology,Chengdu Sichuan 610059,China)

机构地区：[1]成都理工大学环境与土木工程学院,四川成都610059

出　　处：《山西建筑》2024年第21期78-81,共4页Shanxi Architecture

摘　　要：以湖北某长江公路大桥南锚碇基坑工程为背景,运用数值模拟软件,分析圆形深基坑地连墙侧向变形的特性,并对其影响因素进行分析。研究结果显示:圆形深基坑地连墙侧向变形的总体表现为“中间大,两端小”,最大侧向变形出现的位置随着基坑开挖,不断向下移动,开挖完成后,最终稳定在墙体的中下部约2/3处。圆形深基坑地连墙厚度和插入深度对地连墙侧向变形的影响较大,因此,在设计时合理的取值,不仅可以节约工程造价,更能保证工程的安全。This study,set against the backdrop of the south anchor pit foundation project for a Yangtze River highway bridge in Hubei,employs numerical simulation software to investigate the characteristics of lateral deformation in diaphragm walls within circular deep excavations and examines the influencing factors.The findings indicate that the overall lateral deformation pattern of diaphragm walls in these excavations is characterized by a“larger middle and smaller ends”.As excavation progresses,the location of maximum lateral deformation shifts downward,ultimately stabilizing at approximately two-thirds down from the midsection after excavation completion.Furthermore,both the thickness and insertion depth of the diaphragm wall significantly affect its lateral deformation,thus,judicious selection of these parameters during design not only optimizes construction costs but also enhances project safety.

关 键 词：圆形深基坑 侧向变形 数值模拟 地下连续墙 

分 类 号：TU433[建筑科学—岩土工程]