上部结构与土体共同作用的影响因素

Study on influence factor of superstructure and subsoil interaction effect

采用通用有限元软件ANSYS,建立了框架结构、筏基和土体共同作用的分析模型,分析了上部结构尺寸、筏板基础刚度、地基土材料对共同作用体系的影响.通过比较共同作用的分析方法与常规计算方法的结果,研究了结构体系在外荷载作用下,各组件之间的内在联系,得到了地基沉降、反力的分布,以及基础和上部结构的内力变化规律.共同作用的分析结果符合工程实际,最后提出了一些设计建议.

The analysis model consisting of a frame, raft foundation and subsoil was established using general FEM ANSYS. The effect of superstructure dimension, raft foundation rigidity and subsoil property on the interaction system was studied. The results from interaction analysis method and common method were compared. The internal relation of each structure component was investigated, and the subsoil settlement and reaction distribution rule, internal force redistribution regulation of foundation and superstructure was attained. The results of interaction analysis accorded with practical engineering,and some design suggestion was proposed finally.