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Dynamic failure of double-layer spherical reticulated shell and estimate of seismic losses

CHEN Dong1,WANG Xiuxin2,XU Zhaodong2(1.Department of Civil Engineering,Anhui University of Architecture,Hefei 230001,China; 2.Department of Civil Engineering,Southeast University,Nanjing 210096,China)  
The double-layer spherical reticulated shell is the structure which is sensitive to imperfections.The initial imperfections influencing structural dynamic failure are initial curvature and residual stress of bar element and installation deviation of nodes.With the ANSYS secondary exploitation,the programs of bar element were written to consider the influences of initial curvature and residual stress.Based on the works,the influences of the three imperfections on dynamic failure of the spherical reticulated shell were got by IDA.Then the estimate method of seismic losses of the double-layer spherical reticulated shell was put forward.
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