摘要
提出了考虑梁板复合支撑和分段施工效应的深大基坑支护结构三维全过程计算方法,编制了三维全过程分析有限元程序。以软土地基上某复杂深大基坑工程为例,详细计算了整个基坑支护结构、梁板复合支撑系统在施工全过程中的受力及变形性状。将计算结果与实测资料相比较,验证了本文方法的适用性,同时表明楼板复合支撑是控制深大基坑变形的有效方法之一。
A method to analyze behaviors of beam-slab braced foundation pits was proposed considering the effect of construction process, A 3D FEM program based on the model was developed. The method was used to analyze the deformation and internal forces in the retaining structure and the beam-slab bracing system of a deep foundation at different excavation stages. The analytical results were compared with the measured data. It was indicated that the suggested method could be used to simulate the excavation process of complex foundation pits. It was also shown that the beam-slab bracing system .was an effective way to control the displacement of large and deep foundation pit.
出处
《岩土工程学报》
EI
CAS
CSCD
北大核心
2007年第11期1670-1675,共6页
Chinese Journal of Geotechnical Engineering
关键词
深基坑
梁板支撑
三维
过程分析
有限元
deep foundation pit
beam-slab bracing system
3D
process analysis
FEM
