摘要
通过某地铁车站深基坑工程实例数值仿真,对黄土地区地铁深基坑施工过程中围护结构变形和地面沉降进行了研究。数值结果表明黄土地区围护结构最大变形位置位于开挖面以上,基坑空间效应同样明显。对于由地面最大沉降量确定的影响分区,不能照搬软土地区经验。由于黄土强度高,最大地面沉降量小,应根据地面斜率大小特定分区。
Through the numerical simulation of a subway station deep excavation project,the deformation of the enclosure structure and ground settlement during the construction of a subway deep excavation in loess area are studied.The numerical results show that the maximum deformation of the enclosure structure in loess area is located above the excavation surface,and the spatial effect of the pit is also obvious.For the influence zoning determined by the maximum ground settlement,the experience of soft soil areas cannot be copied.Due to the high strength of loess and small maximum ground settlement,specific zoning should be based on the size of ground slope.
作者
杨海峰
牛锦涛
商宁坤
吴明
Yang Haifeng;Niu Jintao;Shang Ningkun;Wu Ming(Electronic Comprehensive Survey and Research Institute,Ministry of Information Industry,Xi’an Shaanxi 710054,China;Department of Geological Engineering,Chang’an University,Xi’an Shaanxi 710054,China)
出处
《山西建筑》
2023年第18期81-83,90,共4页
Shanxi Architecture
基金
陕西省自然科学基金(2023-JC-YB-262)
陕西省重点研发计划(2022SF-269)。
关键词
基坑
围护结构
侧向变形
地面沉降
数值计算
excavation
enclosure structure
lateral deformation
ground subsidence
numerical calculation
作者简介
杨海峰(1980-),男,工程师,从事基坑支护设计方面工作。
