Discrete element simulation analysis of shaking table test of masonry ancient pagoda model
Historical masonry pagodas have low bonding strength,which is easy to crack and destroy under earthquake action.How to study the cracking and f racture development mechanism of masonry pagodas under earthquake excitation,a discrete element model was established for the 1/8 scale model structure of the pagoda of Xuanzang,and the acceleration and displacement responses of the structure under seismic wave excitation was analyzed.Compared with the shaking table test results,the whole tower cracking and destruction.The results show that the acceleration and displacement responses of the structure obtained by numerical calculation are consistent with the shaking table test results.When the earthquake intensity is low,the displacement curves of the top floor from the numerical analysis and the experiment are close.After the earthquake intensity increases,the numerical results of the structural dynamic response caused by the tower cracking differ from the test results.Still,the trends of both are the same.Under the excitation of seismic waves,the tower's first floor cracked first,and with the increase of seismic intensity,cracking extended to the middle tower floor,and the block staggered on the second floor.The damage process of the model is consistent with the development of experimental cracks.The research results provide a reference for the analysis of earthquake damage and the failure process of masonry pagodas.
masonry pagodadiscrete element methodshaking table testdamage analysis
万方数据
维普
