Dynamic Performance Analysis Of Historic Architecture Based On Soil-Structure Interaction

It is of great historical and practical value to analyze and study the seismic performance of Chinese historic timber architecture which occupies a very important position in the world.Guangyue Tower was taken as a research object and it has been studied on dynamic performance analysis by APDL of ANSYS based on soil-structure interaction in this paper.The main research aspects are as follows.(1)Three kinds of finite element models were established and the models were analyzed by modal analysis to get the natural frequency and mode of the structure.The natural frequency was compared with the existing specifications to verify the modified model,ensure the accuracy and feasibility of the model and determine a reasonable finite element model of Guangyue Tower.(2)Three representative seismic waves were selected as seismic excitation of the finite element model of Guangyue Tower to obtain the maximum displacement and acceleration excitation of the special node in the horizontal direction.And then,The results of three different seismic response analyses were compared to explore the influence of seismic response of historic timber architecture considering soil-structure interaction.Parameters,such as the stiffness of concrete joints and the weight of thick roof,were studied on the influence of them to structure excitation under earthquake action.(3)Combined with characteristics of Chinese historic timber architecture,the dynamic nonlinear analysis of the finite element model of Guangyue Tower under different seismic waves has been carried out to study the possible collapse mechanism of historic timber architecture.