科技创新与应用2024，Vol.14Issue(11)：67-71,5.DOI:10.19981/j.CN23-1581/G3.2024.11.016
地铁车站明挖基坑近接互通式立交桥施工稳定性分析
摘要
Abstract
The existence of adjacent buildings usually affects the excavation and stability of the foundation pit.A foundation pit excavation case in Qingdao,for example,is very close to the viaduct pier and ramp in the horizontal direction of the foundation pi.If there are no enough protective measures,it will have a certain impact on the already built bridges and ramps in the process of foundation pit excavation,and the result will be very serious.The deformation of surrounding rock of foundation pit,the settlement of existing foundation and the stability of supporting structure are studied in detail by finite element method,and the safety of surrounding rock of foundation pit is discussed.The calculation results show that the maximum vertical displacement of the soil in the foundation pit is asymmetrically distributed on both sides,the maximum vertical displacement is about 12.36 mm at the AB side wall of the foundation pit,and the influence range of deformation of the foundation pit is elliptical.The horizontal displacement of the foundation pit is asymmetrically distributed on the AB and CD sides,and the maximum horizontal displacement appears when the size of the CD foundation pit is about 6.40 mm,and the surface settlement and pier deformation are within the standard range,so it can be considered that in the process of foundation pit excavation,the foundation pit and the existing buildings are safe.关键词
地铁/稳定性分析/数值计算/基坑开挖/基坑支护Key words
subway/stability analysis/numerical calculation/foundation pit excavation/foundation pit support分类
建筑与水利引用本文复制引用
薛晓军,冯青云,刘鹏,龙世翔,赵振亮,王永杰..地铁车站明挖基坑近接互通式立交桥施工稳定性分析[J].科技创新与应用,2024,14(11):67-71,5.基金项目
山东省自然科学基金项目(ZR2019MEE027) （ZR2019MEE027）
中铁三局集团有限公司科研项目(K220601) （K220601）
