摘要
以兰州地铁项目工程为背景,介绍了排桩加内撑支护结构在世纪大道试验段地铁车站基坑工程中的应用,并采用大型有限元软件ADINA模拟了基坑的开挖和围护结构的施工过程,得到了围护结构周围土体的位移及围护结构的内力。有限元分析计算结果表明,该基坑工程支护设计方案合理、效果良好,满足了设计和环境的要求,同时还证明了排桩加内撑支护结构在兰州地区地铁车站基坑中的适用性。本工程取得的经验对兰州轨道交通基坑工程和兰州地区类似基坑工程具有指导意义。
Taking a metro project in Lanzhou as the background, the application of row-pile and inner- bracing supporting structure of metro station foundation pit in Shiji Road test section was introduced, and the construction process about excavation and retaining structure of the foundation pit was simulated by the large finite element software ADINA. The soil displacements around the retaining structure and the internal forces of the retaining structure were obtained. The analysis and calculation results of the finite elemen showed that the design scheme for the supporting was reasonable, the effectiveness was good and the requirements of design and environment were satisfied. The results also showed that the applicability of row-pile and inner-bracing supporting structure of metro station foundation pit in Lanzhou area. The experience gained from this project played a guiding role in the Lanzhou railway traffic foundation pit project and the similar foundation pit projects in Lanzhou area.
出处
《工程质量》
2018年第1期51-56,共6页
Construction Quality
基金
国家自然科学基金项目(51508256)
甘肃省建设科技攻关计划项目(JK2015-5)
兰州市科技发展计划项目(2015-3-131)
关键词
排桩加内撑
支护结构
地铁车站基坑
有限元分析
row-pile and inner-bracing
supporting structure
metro station foundation pit： finite element analysis
