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苏州地下空间项目为二层全埋式地下室框架结构,平面尺寸为190m×112m,采用有限元法对超长结构进行了详细的温度应力分析,并提出对于超长结构无缝设计的分析方法和解决方案;利用有限元法对挡土墙结构进行详细分析,提出挡土墙底部的双向受力特征,指出仅考虑单向受力时,底部偏于不安全;基础设计与基坑开挖整体考虑,提出对全埋式地下空间项目,平板式筏基具有更好的便利性和经济性。
The underground space project in Suzhou is a two-storey fully buried basement frame structure with a plane dimension of 190m × 112m. The thermal stress analysis of the ultra-long structure is carried out by using the finite element method. The analysis method for the seamless design of the ultra-long structure is proposed. The finite element method is used to analyze the structure of the retaining wall in detail and the bi-directional stress characteristics of the retaining wall at the bottom are presented. It is pointed out that the bottom is unsafe when considering only the unidirectional stress. Considered, put forward for the fully buried underground space project, flat raft base has better convenience and economy.