摘要
以呼和浩特轨道交通1号线孔家营站明挖地铁车站基坑工程为背景,通过数值模拟,分析改变地下连续墙厚度、地下连续墙嵌入比和内支撑刚度时,基坑自身围护结构有何变化。研究结果表明:对于明挖地铁车站基坑工程,地下连续墙最大水平位移与地下连续墙厚度、嵌入比和内支撑刚度呈明显负相关,但不会改变基坑原本的变形特征,且地下连续墙水平位移最值不随地下连续墙厚度和内支撑刚度的改变而改变,但地下连续墙嵌入比会改变最值出现位置,地下连续墙嵌入开挖面越深,最大水平位移出现的位置越深。从位移最值变化幅度来看,地下连续墙嵌入比对基坑变形的敏感性偏低。
This study was based on the context of the foundation excavation project for the open-cut metro station at Kongjiaying Station,part of Line 1 of Hohhot's urban rail transit.Through numerical simulations,the effects of changes in diaphragm wall thickness,embedment ratio,and internal bracing stiffness on the retaining structure's behavior were examined.Results indicate that for open-cut metro station excavations,the maximum horizontal displacement of the diaphragm wall negatively correlates with wall thickness,embedment ratio,and internal bracing stiffness,although the fundamental deformation characteristics remain unchanged.Maximum wall displacement values are unaffected by variations in wall thickness and bracing stiffness but are influenced by embedment ratio;the greater the embedment depth below the excavation surface,the deeper the location of maximum displacement.Analysis of displacement variation suggests a relatively low sensitivity of excavation deformation to changes in diaphragm wall embedment ratio.
作者
陈军
麻永华
张振义
艾丽娅安琪
李正浩
马红梅
CHEN Jun;MA Yong-hua;ZHANG Zhen-yi;AILYA An-qi;LI Zheng-hao;MA Hong-mei(Hohhot City Traffic Investment Construction Group Co.,Ltd.,010011,Hohhot,China)
出处
《建筑技术》
2025年第17期2124-2128,共5页
Architecture Technology
关键词
地铁车站
嵌入比
水平位移
深基坑
地下连续墙
metro station
embedment ratio
horizontal displacement deep excavation
diaphragm wall
