RC框架层间位移与构件变形关系研究
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摘要
为实现变形指标——层间位移角在RC框架结构基于性能的抗震设计中的应用,研究了层间位移与构件变形之间的关系。首先,介绍了RC框架层间位移构成。接着,在"强节点"的假定下,建立并验证了弹性状态下层间位移与构件变形的关系式;进入塑性阶段后,引入塑性折减系数,建立了塑性状态下层间位移与构件变形的转换关系式。最后,通过简化方法计算得到的层间位移与用OpenSEES数值模拟得到的结果进行对比分析,研究了塑性折减系数与延性系数的关系。
The relationship between the element deformation and the inter-story drift was studied to realize the application of inter story drift in performance-based seismic design of RC frame structures.Firstly,the composition of inter-story drift was introduced.Secondly,based on the assumption of strong joints and weak members, the relationship between the element deformation and the story drift in elastic state was established and verified.In plastic state,the plastic reduction factor was introduced to establish the relationship between the element deformation and the story drift.Finally,the relationship between the plastic reduction factor and the ductility factor was studied through comparison between the results obtained by the proposed method and those by Open SEES.
The relationship between the element deformation and the inter-story drift was studied to realize the application of inter story drift in performance-based seismic design of RC frame structures.Firstly,the composition of inter-story drift was introduced.Secondly,based on the assumption of strong joints and weak members, the relationship between the element deformation and the story drift in elastic state was established and verified.In plastic state,the plastic reduction factor was introduced to establish the relationship between the element deformation and the story drift.Finally,the relationship between the plastic reduction factor and the ductility factor was studied through comparison between the results obtained by the proposed method and those by Open SEES.
引文
[1]蒋欢军,吕西林.钢筋混凝土框架结构层间位移角与构件变形关系研究[J].地震工程与工程振动, 2009,29(2):66-72. Jiang Huanjun,Lu Xilin.Study on the relationship between story drift and element deformation for reinforced concrete frames[J].Journal of Earthquake Engineering and Engineering Vibration,2009,29 (2):66-72.(in Chinese)
[2]罗文斌,钱稼茹.RC框架弹塑性位移的解构规则与构件的目标侧移角[J].工程力学,2003,20(5): 32-36. Luo Wenbin,Qian Jiaru.Rules of elastoplastic drift decomposition of RC frames and the target drift of members[J].Engineering Mechanics,2003,20 (5):32-36.(in Chinese)
[3]M J N Priestley.Displacement-based approaches torational limit states design of new structures[C].Proceedings of the XI ECEE-Invited Lectures,Paris, 1998.
[4]吕西林,郭子雄,王亚勇.RC框架梁柱组合件抗震性能试验研究[J].建筑结构学报,2001,22(1):2- 7. Lu Xilin,Guo Zixiong,Wang Yayong.Experimental study on seismic behavior of beam-column subassem-blages in RC Frame[J].Journal of Building Structures, 2001,22(1):2-7.(in Chinese)
[5]吴健秋.基于OpenSees的梁—柱节点单元的适用性和定参方法研究[D].重庆:重庆大学,2007. Wu Jianqiu.A Study on the Applicability and Parameter Defining Method of the Beam-Column Model in OpenSees[D].Chongqing;Chongqing University, 2007.(in Chinese)
[6]陈丽静.平面梁柱单元弹塑性刚度矩阵分析[D].北京:北京交通大学,2004. Chen Lijing.A Study on the elastoplastic stiffness matrixs ofplane beam-column elements[D].Beijing: Beijing Jiaotong University,2004.(in Chinese)
[7]SilviaMazzoni,Frank McKenna,Michael H Scott,et al.OpenSees CommandLanguage Manual[R]. PEER,University of California,Berkeley,2004.
[8]中华人民共和国住房和城乡建设部.GB 50011—2010建筑抗震设计规范[S].北京:中国建筑工业出版社,2010. Ministry of Construction of the People' s Republic of China.GB 50011—2010 Code for seismic design of buildings[S].Beijing;China Architecture and Building Press,2010.(in Chinese)
[2]罗文斌,钱稼茹.RC框架弹塑性位移的解构规则与构件的目标侧移角[J].工程力学,2003,20(5): 32-36. Luo Wenbin,Qian Jiaru.Rules of elastoplastic drift decomposition of RC frames and the target drift of members[J].Engineering Mechanics,2003,20 (5):32-36.(in Chinese)
[3]M J N Priestley.Displacement-based approaches torational limit states design of new structures[C].Proceedings of the XI ECEE-Invited Lectures,Paris, 1998.
[4]吕西林,郭子雄,王亚勇.RC框架梁柱组合件抗震性能试验研究[J].建筑结构学报,2001,22(1):2- 7. Lu Xilin,Guo Zixiong,Wang Yayong.Experimental study on seismic behavior of beam-column subassem-blages in RC Frame[J].Journal of Building Structures, 2001,22(1):2-7.(in Chinese)
[5]吴健秋.基于OpenSees的梁—柱节点单元的适用性和定参方法研究[D].重庆:重庆大学,2007. Wu Jianqiu.A Study on the Applicability and Parameter Defining Method of the Beam-Column Model in OpenSees[D].Chongqing;Chongqing University, 2007.(in Chinese)
[6]陈丽静.平面梁柱单元弹塑性刚度矩阵分析[D].北京:北京交通大学,2004. Chen Lijing.A Study on the elastoplastic stiffness matrixs ofplane beam-column elements[D].Beijing: Beijing Jiaotong University,2004.(in Chinese)
[7]SilviaMazzoni,Frank McKenna,Michael H Scott,et al.OpenSees CommandLanguage Manual[R]. PEER,University of California,Berkeley,2004.
[8]中华人民共和国住房和城乡建设部.GB 50011—2010建筑抗震设计规范[S].北京:中国建筑工业出版社,2010. Ministry of Construction of the People' s Republic of China.GB 50011—2010 Code for seismic design of buildings[S].Beijing;China Architecture and Building Press,2010.(in Chinese)
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