摘要
为了探索施工期深基坑的变形特性,结合武汉市地铁光谷广场站深基坑工程实际,采用FLAC3D数值模拟软件,考虑基坑的实际施工开挖步序,对深基坑工程地下连续墙在相应支护体系下开挖过程中的变形特性进行了数值模拟,得到了采用地下连续墙支护结构的基坑开挖至不同深度时的变形场。根据变形场,分析得出了基坑各部位的变形特性,及最大水平、沉降变形量。通过对比分析发现,数值模拟结果与前期现场监测结果基本吻合,说明数值模拟分析结果对深基坑施工具有一定的指导意义,支护结构设计参数能够满足施工要求,可为其他类似基坑工程支护参数的选取提供参考。
Based on the deep foundation project of Guanggu square subway station in Wuhan City,considering the actual excavation sequence,we obtain the deformation characteristics of its deep foundation pit supported by diaphragm wall in the process of excavation with the FLAC-3D numerical simulation software,and the deformation field of the diaphragm wall in different excavation depths is obtained.According to the analysis results,the deformation characteristics of each position in the foundation pit,the maximum horizontal displacement and settlement are obtained.The simulation results are consistent with the preliminary field monitoring data,which means that numerical simulation can guide the construction of deep foundation pit.The simulation results also show that the design parameters of the diaphragm wall can meet the construction requirements.
出处
《人民长江》
北大核心
2011年第15期25-27,62,共4页
Yangtze River
关键词
FLAC3D
地铁站
地下连续墙
深基坑
变形特性
数值模拟
FLAC^3D
subway station
diaphragm wall
deep foundation pit
deformation characteristics
numerical simulation
