| 基于灵敏度分析和优化方法的异形钢结构烟囱模型修正 |
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| 引用本文： | 苏龙,吕令毅,束磊,蔡洪良,杨薇. 基于灵敏度分析和优化方法的异形钢结构烟囱模型修正[J]. 工程建设与设计, 2010, 0(1): 33-36 |
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| 作者姓名： | 苏龙 吕令毅 束磊 蔡洪良 杨薇 |
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| 作者单位： | 1. 东南大学土木工程学院RC&PC教育部重点实验室,南京,210096
2. 华东电力设计院,上海,200063 |
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| 基金项目： | 973计划资助项目(NO.2007CB714200);;教育部博士点基金资助(No.20070286017) |
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| 摘 要： | 为了给异形钢结构烟囱的抗风、抗震计算及健康监测提供可靠的有限元计算模型,采用钢结构烟囱风洞试验模型的模态参数作为基准,将灵敏度分析和优化方法与大型有限元分析软件相结合修正烟囱结构模型的有限元模型。首先对烟囱结构参数化建模,然后通过灵敏度分析选择合适的优化变量,最后应用一阶优化方法修正烟囱结构的有限元模型。结构构件间连接的过分简化常会带来较大误差,因此烟囱结构的部分连接节点采用半刚性计算模型。结果表明,经过修正后的有限元模型动力计算结果与试验结果非常接近。
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| 关 键 词： | 烟囱 模型修正 灵敏度分析 优化 半刚性连接 |
Dynamic Model Updating of the Chimney Structure Based on Structural Sensitivity Analysis and Optimization Design Method |
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| SU Long,LU Ling-yi,SHU Lei,CAI Hong-liang,YANG Wei. Dynamic Model Updating of the Chimney Structure Based on Structural Sensitivity Analysis and Optimization Design Method[J]. Construction & Design for Project, 2010, 0(1): 33-36 |
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| Authors: | SU Long LU Ling-yi SHU Lei CAI Hong-liang YANG Wei |
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| Affiliation: | 1.Key Laboratory for RC& PC Structure Education Ministry Southeast University;Nanjing 210096;China;2.East China Electric Power Design Institute;Shanghai 200063;China |
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| Abstract: | To provide a precise finite element model (FEM) for wind resistance analysis,seismic resistance analysis and health monitoring of irregular steel chimney structure,modal parameters of the steel chimney wind-tunnel model are used for criterion of FEM correction.And structural sensitivity analysis and optimization design method are combined with FE software for model updating.Firstly,the chimney FEM is built in terms of parameters.Secondly,appropriate parameters are picked out by sensitivity analysis.Finally,... |
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| Keywords: | chimney model updating sensitivity analysis optimization semi-rigid |
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