| 体育场挑篷结构抗震性能试验及弹塑性分析 |
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| 引用本文： | 王奇,王亚勇,楼文娟,白雪霜.体育场挑篷结构抗震性能试验及弹塑性分析[J].浙江大学学报(自然科学版 ),2011,45(1):87-92. |
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| 作者姓名： | 王奇 王亚勇 楼文娟 白雪霜 |
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| 作者单位： | 1.浙江大学 结构工程研究所,浙江 杭州 310058；2.中国建筑科学研究院 工程抗震研究所,北京 100013 |
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| 基金项目： | 国家“十一五”科技支撑计划资助项目（2006BAJ13B01）. |
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| 摘 要： | 为了了解济南奥林匹克体育中心体育场看台这种超限结构的抗震性能,进行地震模拟振动台试验和精细的有限元模型（FEM)分析.使用通用有限元程序SAP2000对缩尺结构建立有限元分析模型.通过模态分析研究结构的基本动力特性,采用反应谱分析和弹性时程分析挑篷钢结构应力比的情况及结构层刚度分布的均匀程度.通过静力弹塑性推覆(pushover)分析,验证了结构整体在罕遇地震作用下的弹塑性变形能力并分析该结构水平向整体抗震性能.研究表明,有限元计算结果和振动台试验量测值基本一致,计算结果可靠,原型结构布置基本合理,整体抗震性能较好,能够满足该结构在所在地区设防烈度下各水准的水平向抗震要求.
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| 关 键 词： | 超限结构 结构抗震 有限元分析 静力弹塑性分析 体育场挑篷 |
Model test and elastic-plastic analysis on seismic performance of
stadium canopy roof |
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| WANG Qi,WANG Ya-yong,LOU Wen-juan,BAI Xue-shuang.Model test and elastic-plastic analysis on seismic performance of
stadium canopy roof[J].Journal of Zhejiang University(Engineering Science),2011,45(1):87-92. |
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| Authors: | WANG Qi WANG Ya-yong LOU Wen-juan BAI Xue-shuang |
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| Affiliation: | 1. Institute of Structural Engineering, Zhejiang University, Hangzhou 310058, China;
2. Institute of Earthquake Engineering, China Academy of Building Research, Beijing 100013, China |
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| Abstract: | The scaled model shaking table test and a refined finite element model (FEM) computation were conducted in order to analyze the seismic behavior of Jinan Olympic Center, which is an out-of-code structure. A scaled model structure was established by general finite element analysis program SAP2000. The basic dynamic characteristics of the structure were analyzed through mode analysis. The stress ratio distribution of the stadium canopy roof’s steel members and the uniformity of the story stiffness distribution were investigated by response spectrum analysis and elastic time history analysis. The deformation capacity of the whole structure under rare earthquake was verified with the static elastic plastic analysis, and the horizontal seismic behavior was analyzed. Results showed that the FEM analysis results accorded well with the shaking table test results, and the calculation was reliable. The prototype has a rational arrangement of structural elements and good seismic performance, which meets the all requirements of the horizontal earthquake resistance demands from different levels on this site． |
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| Keywords: | out-of-code structure structure earthquake-resistance finite element analysis static elastic-plastic analysis stadium canopy roof |
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