Full-Text Search:
Home|About CNKI|User Service|中文
Add to Favorite Get Latest Update

Dynamic time-history analysis of subway station considering non-uniform seismic input

GAO Zhineng;ZHUO Weidong;GU Yin;College of Civil Engineering,Fuzhou University;Key Laboratory for Multi Disaster Prevention and Governance of Civil Engineering of Fujian Province;  
In order to study the influence of non-synchronous excitation and the free field that considering soil media damping on dynamic response of large subway station,a 1D time-domain finite element method for seismic wave motion of free field in layered media was developed,which considers the effect of soil media damping.A program for equivalent load of non-synchronous excitation has been developed with Matlab programming language on the basis of the method.Based on a typical two-layer double-column subway station,a 3D finite element model of the whole subway station structure-soil interaction system was built,and dynamic time-history analysis for the whole system under Dirac pulse excitation was carried out.The results show that,compared with synchronous input,the distributions and amplitudes of the control internal forces and story drifts of the subway station structure change significantly under non-synchronous input; compared with the wave input without considering soil medium damping,both the control internal forces and the maximum story drifts decrease in a certain extent under the wave input considering soil medium damping,and the decrease amplitude increases with increasing angle of incidence wave.It can be drawn from this paper that,both the non-uniform seismic wave input and the soil media damping have significant influence on dynamic time-history response of large subway station structures.
Download(CAJ format) Download(PDF format)
CAJViewer7.0 supports all the CNKI file formats; AdobeReader only supports the PDF format.
©CNKI All Rights Reserved