The earthquake to one folding plate space truss structure roof lower chord nodal displacement influence
In the ANSYS environment,when the connection between the steel roof and bearing are rigid and hinged,do the modal analysis for this gird roof by using the subspace iteration method,get the former 50 order natural frequencies and mode shapes of this structure,and do time-procedure analysis to understand the seismic performance of the gird roof structure.By doing contrastive analysis of the former 50 order mode shapes,we find that the frequency distribution of the structure is relatively dense,so we not only need to consider the low order modes,and also should consider the impact of the higher modes of the structure during seismic analysis; under eight degree rare earthquake,we use revised EI-Centro earthquake wave to do time-procedure analysis for this structure,the result shows that:in high seismic intensity area,the influence of Vertical seismic to the large span structure is relatively obvious,so we cant neglect the influence of Vertical seismic during the seismic analysis; the kinds of the beating type has little effect on overall structural dynamic performance of this structure.
folded plate grid frame finite element analysis dynamic performance time-procedure analysis
Cui FENG Fu MA
Department of architecture and civil engineering,Taiyuan University of Technology,79,Yingzexi Street,Taiyuan,030024,China
国际会议
沈阳
英文
468-471
2012-09-26（万方平台首次上网日期，不代表论文的发表时间）