| 双层球面网壳动力失效分析及地震损失评估 |
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| 引用本文： | 陈东,王修信,徐赵东.双层球面网壳动力失效分析及地震损失评估[J].地震工程与工程振动,2012,32(1):36-42. |
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| 作者姓名： | 陈东 王修信 徐赵东 |
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| 作者单位： | 1. 安徽建筑工业学院土木学院,安徽合肥,230001
2. 东南大学土木学院,江苏南京,210096 |
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| 基金项目： | 国家自然科学基金重大研究计划项目(90915004) |
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| 摘 要： | 双层球面网壳结构是一种缺陷敏感型结构,影响结构动力失效的初始缺陷主要有杆件的初弯曲、杆件的残余应力和结构节点的初始安装偏差3种。本文首先利用有限元软件ANSYS的二次开发功能开发了可以考虑初始弯曲和残余应力的杆单元,接着利用动力增量法(IDA)系统地研究了这3种缺陷对结构动力失效的影响,最后总结提出了考虑缺陷的双层球面网壳结构的抗震损失评估方法。
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| 关 键 词： | 双层球面网壳 动力失效 初弯曲 残余应力 节点安装偏差 |
Dynamic failure of double-layer spherical reticulated shell and estimate of seismic losses |
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| CHEN Dong
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WANG Xiuxin
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XU Zhaodong.Dynamic failure of double-layer spherical reticulated shell and estimate of seismic losses[J].Earthquake Engineering and Engineering Vibration,2012,32(1):36-42. |
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| Authors: | CHEN Dong WANG Xiuxin XU Zhaodong |
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| Institution: | 1.Department of Civil Engineering,Anhui University of Architecture,Hefei 230001,China; 2.Department of Civil Engineering,Southeast University,Nanjing 210096,China) |
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| Abstract: | 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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| Keywords: | double-layer spherical reticulated shell dynamic failure initial curvature residual stress installation deviation of nodes |
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