【摘要】 采用Mindlin厚板理论 ,建立了深基坑支护结构内力与变形时空效应的三维有限元分析模型。以上海某深基坑为工程原型 ,利用所编制的计算程序 ,详细探讨了分步开挖深度、基坑开挖宽度、边界约束条件、地基流变等因素对支护结构内力和变形时空效应的影响 ,揭示了各种因素对软土深基坑支护结构内力与变形时空效应影响的规律 ,其结论可为深基坑支护设计、施工及周围环境保护提供参考。更多还原

【Abstract】 An attempt is made to study the factors on the timespace effect of internal force and deformation for a retaining structure of foundation pit. It is based on the Mindlin plate theory. A space analysis program developed by authors is used as a tool. A deep foundation pit of engineering in Shanghai is adopted as an example. The factors on the time?space effect of internal force and deformation for a retaining structure are studied in detail through the example. These factors include the depth of each step, width of pit, boundary restraints, and theology of foundation. Some useful conclusions are obtained through the study. It can be used for the design and construction reference.更多还原