| 空间框架简化为平面模型的抗震分析 |
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| 引用本文： | 杨红,高文生,王志军. 空间框架简化为平面模型的抗震分析[J]. 重庆大学学报(自然科学版), 2008, 31(11): 1267-1272 |
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| 作者姓名： | 杨红 高文生 王志军 |
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| 作者单位： | 重庆大学土木工程学院,重庆400030 |
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| 基金项目： | 教育部留学回国人员科研启动基金 |
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| 摘 要： | 在OpenSees(open systemfor earthquake engineering simu lation)平台上,采用基于柔度法的纤维模型非线性梁柱单元有限元分析模型,以八度区二级规则抗震空间框架以及沿x向取出的平面框架为研究对象,将单向地震作用下的空间框架作为对比的桥梁,从整体和局部两个层次研究双向地震作用下空间框架、单向地震作用下平面框架的地震反应的相关性.结果表明,3种模型的x向整体位移反应较为近似,按照传统方法提取平面模型代替空间框架的单向地震反应是可行的.框架局部反应差别较大,单向地震下平面框架是以梁铰为主的梁柱铰机构;双向地震下空间框架则以柱铰为主,柱端转角延性需求明显大于梁端,有形成层侧移机构的趋势,平面模型明显低估了空间框架柱的局部地震反应.
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| 关 键 词： | 钢筋混凝土 空间框架 双向水平地震作用 非线性分析 纤维模型 |
the rationality of plane model simplifying three dimension frame in seismic response analysis |
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| YANG Hong,GAO Wen sheng and WANG Zhi jun. the rationality of plane model simplifying three dimension frame in seismic response analysis[J]. Journal of Chongqing University(Natural Science Edition), 2008, 31(11): 1267-1272 |
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| Authors: | YANG Hong GAO Wen sheng WANG Zhi jun |
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| Affiliation: | YANG Hong,GAO Wen-sheng,WANG Zhi-jun(College of Civil Engineering,Chongqing University,Chongqing 400030,P.R.China) |
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| Abstract: | A finite element model based on the flexibility-method and a fiber-section model of nonlinear beam-column elements was adopted within the OpenSees framework.A typical multistory reinforced concrete 3D frame designed in accordance with the Chinese building code and a representative plane frame parallel to the X-axis were used as examples.The relationships of the responses obtained from the plane and 3D models were studied by comparing global and local seismic responses of the frame,and by taking the response... |
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| Keywords: | reinforced concrete 3D Frame bi-directional seismic action nonlinear analysis fiber model |
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