【摘要】 针对5×5刚性桩复合地基三维群桩,利用有限元分析软件ANSYS软件进行了动力特性分析,计算模型中,桩体、桩间土、基础和褥垫层均假定为线弹性模型,并考虑上部结构的反馈作用。通过数值计算研究了结构自振特性,采用时程分析法对刚性桩复合地基进行了地震响应分析,研究了复合地基-基础-上部结构三者在不同地震作用下,其结构的位移、内力的数值大小及分布规律,对抗震设计具有参考价值。更多还原

【Abstract】 For 5 × 5 three-dimensional composite foundation pile group,using the finite element analysis software ANSYS for the analysis of dynamic characteristics,in the calculation model,the pile,soil between piles,foundation and cushion are assumed to be linear elastic models,and the feedback effect of the upper structure is also considered.Numerical simulation is employed to study the structural vibration characteristics.The time history analysis method is used to analyze the earthquake response of composite foundation.The magnitude of displacement and internal forces and distribution of the composite foundation-foundation-superstructure under different seismic excitations are studied.It may provide reference for seismic design of structures.更多还原