摘要
大型深基坑支护是当今工程界的热点课题之一,其中环形支撑体系作为独特的支护形式,在某些空间受限的条件下可以发挥其独特的优势。本文以某大型环梁支撑深基坑为例,建立基坑三维有限元模型,对基坑的开挖过程进行数值模拟,分析该工程的环梁支撑体系在开挖过程中的受力、变形情况,研究了基坑环梁支撑体系的受力变形特点,旨在为该类支护结构的应用提供理论分析。同时从力的作用角度,并根据有限元分析结果,提出基坑安全保障建议。
Large-scaled deep excavation support is one of the hot issues in the geotechnical engineering field. As a special support type, the ring beam support has its unique advantages under the conditions of limited space. For studying the large-scaled ring beam supported deep excavation, three dimensional finite element model is established to simulate the excavation process of foundation pit. The force and deformation performances of the ring beam support system are studied systematically to provide theoretical analysis for the application of this support type. According to above results, some suggestions are proposed to ensure the security of this deep excavation.
出处
《广州建筑》
2013年第2期27-31,共5页
GUANGZHOU ARCHITECTURE
基金
广东省茂名市住房和城乡建设局委托项目:"常见专项施工方案设计施工典型做法及示范"
关键词
深基坑
环梁支撑
渗流
有限元分析
deep excavation
ring beam support
seepage
finite elements analysis
