钢筋混凝土框架结构基于性能的塑性设计方法
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摘要
为预测和控制钢筋混凝土框架结构在罕遇地震作用下的非弹性性能,基于功能平衡原理,提出了一种钢筋混凝土框架结构基于性能的塑性设计方法.该方法预先选定目标侧移和屈服机制,根据功能平衡方程即可得到结构的设计基底剪力;采用塑性设计法设计框架构件和节点,以达到预期的屈服机制和性能.采用此方法对一幢8层钢筋混凝土框架结构进行了设计,并采用动力时程分析法验证了该方法的可行性.研究结果表明,采用基于性能的塑性设计方法设计的钢筋混凝土框架结构最终呈现预期的屈服机构,非弹性性能沿结构高度分布均匀合理.
In order to desirably predict and control the inelastic activity of reinforced concrete(RC) frames subjected to severe ground motions,on the basis of energy-work balance a performance-based plastic design(PBPD) method for the design of RC frames was presented.In the PBPD method,the design base shear is obtained based on the energy-work balance and pre-selected target drift and yield mechanism.Plastic design was performed to detail the frame members and connections in order to achieve the targeted yield mechanism and behavior.The method was applied to an eight-storey RC frame and validated by inelastic dynamic analyses.The results indicate that the frames develop desired strong column sway mechanisms,and the story drifts are well within the target values to meet the desired performance objectives.
In order to desirably predict and control the inelastic activity of reinforced concrete(RC) frames subjected to severe ground motions,on the basis of energy-work balance a performance-based plastic design(PBPD) method for the design of RC frames was presented.In the PBPD method,the design base shear is obtained based on the energy-work balance and pre-selected target drift and yield mechanism.Plastic design was performed to detail the frame members and connections in order to achieve the targeted yield mechanism and behavior.The method was applied to an eight-storey RC frame and validated by inelastic dynamic analyses.The results indicate that the frames develop desired strong column sway mechanisms,and the story drifts are well within the target values to meet the desired performance objectives.
引文
[1]张倩.钢框架结构基于性能的抗震设计方法研究[D].西安:西安建筑科技大学土木工程学院,2008.
[2]李应斌.钢筋混凝土结构基于性能的抗震设计理论与应用研究[D].西安:西安建筑科技大学土木工程学院,2004.
[3]管民生.基于性能的钢筋混凝土框架结构抗震性能评价方法与应用研究[D].广州:华南理工大学土木与交通学院,2011.
[4]中国建筑科学研究院.GB50011—2010建筑抗震设计规范[S].北京:中国建筑工业出版社,2010.
[5]樊长林,张善元,路国运.钢筋混凝土框架刚塑性抗震设计方法研究[J].世界地震工程,2009,25(3):67-73.FAN Changlin,ZHANG Shanyuan,LU Guoyun.Studyon rigid-plastic seismic design of reinforced concreteframe structures[J].World Earthquake Engineering,2009,25(3):67-73.
[6]周磊.多层钢框架性态抗震设计:屈服点谱法[D].苏州:苏州科技学院土木工程系,2011.
[7]辛力,梁兴文,白亮.RC框架结构直接基于位移的抗震优化设计方法[J].地震工程与工程振动,2008,28(5):79-86.XIN Li,LIANG Xingwen,BAI Liang.Optimal methodfor direct displacement-based seismic design of RCframes[J].Journal of Earthquake Engineering andEngineering Vibration,2008,28(5):79-86.
[8]MEDHEKAR M S,KENNEDY D J L.Displacement-based seismic design of buildings-application[J].Engineering Structures,2000,22(3):210-221.
[9]GHORBANIE-ASL M.Performance-based seismic designof building structures[D].Carleton:Department of Civiland Environmental Engineering,Carleton University,2007.
[10]Applied Technology Council.FEMA-445 Next-generationperformance-based seismic design guidelines:programplan for new and existing buildings[S].Washington DC:Federal Emergency Management Agency,2006.
[11]SAHOO D R,CHAO S H.Performance-based plasticdesign method for buckling-restrained bracedframes[J].Engineering Structures,2010,32(9):2950-2958.
[12]LIAO W C.Performance-based plastic design ofearthquake resistant reinforced concrete momentframes[D].Ann Arbor:Department of Civil andEnvironmental Engineering,The University ofMichigan,2010.
[13]LEE S S.Performance-based design of moment framesusing target drift and yield mechanism[D].Michigan:Department of Civil and Environmental Engineering,The University of Michigan,2002.
[14]CHAO S H,GOEL S C,LEE S S.A seismic designlateral force distribution based on inelastic state ofstructures[J].Earthquake Spectra,2007,23(3):547-569.
[15]LEELATAVIWAT S,GOEL S C,STOJADINOVIC B.Toward performance-based seismic design ofstructures[J].Earthquake Spectra,1999,15(3):435-461.
[16]中国建筑科学研究院.GB50009—2012建筑结构荷载规范[S].北京:中国建筑工业出版社,2012.
[2]李应斌.钢筋混凝土结构基于性能的抗震设计理论与应用研究[D].西安:西安建筑科技大学土木工程学院,2004.
[3]管民生.基于性能的钢筋混凝土框架结构抗震性能评价方法与应用研究[D].广州:华南理工大学土木与交通学院,2011.
[4]中国建筑科学研究院.GB50011—2010建筑抗震设计规范[S].北京:中国建筑工业出版社,2010.
[5]樊长林,张善元,路国运.钢筋混凝土框架刚塑性抗震设计方法研究[J].世界地震工程,2009,25(3):67-73.FAN Changlin,ZHANG Shanyuan,LU Guoyun.Studyon rigid-plastic seismic design of reinforced concreteframe structures[J].World Earthquake Engineering,2009,25(3):67-73.
[6]周磊.多层钢框架性态抗震设计:屈服点谱法[D].苏州:苏州科技学院土木工程系,2011.
[7]辛力,梁兴文,白亮.RC框架结构直接基于位移的抗震优化设计方法[J].地震工程与工程振动,2008,28(5):79-86.XIN Li,LIANG Xingwen,BAI Liang.Optimal methodfor direct displacement-based seismic design of RCframes[J].Journal of Earthquake Engineering andEngineering Vibration,2008,28(5):79-86.
[8]MEDHEKAR M S,KENNEDY D J L.Displacement-based seismic design of buildings-application[J].Engineering Structures,2000,22(3):210-221.
[9]GHORBANIE-ASL M.Performance-based seismic designof building structures[D].Carleton:Department of Civiland Environmental Engineering,Carleton University,2007.
[10]Applied Technology Council.FEMA-445 Next-generationperformance-based seismic design guidelines:programplan for new and existing buildings[S].Washington DC:Federal Emergency Management Agency,2006.
[11]SAHOO D R,CHAO S H.Performance-based plasticdesign method for buckling-restrained bracedframes[J].Engineering Structures,2010,32(9):2950-2958.
[12]LIAO W C.Performance-based plastic design ofearthquake resistant reinforced concrete momentframes[D].Ann Arbor:Department of Civil andEnvironmental Engineering,The University ofMichigan,2010.
[13]LEE S S.Performance-based design of moment framesusing target drift and yield mechanism[D].Michigan:Department of Civil and Environmental Engineering,The University of Michigan,2002.
[14]CHAO S H,GOEL S C,LEE S S.A seismic designlateral force distribution based on inelastic state ofstructures[J].Earthquake Spectra,2007,23(3):547-569.
[15]LEELATAVIWAT S,GOEL S C,STOJADINOVIC B.Toward performance-based seismic design ofstructures[J].Earthquake Spectra,1999,15(3):435-461.
[16]中国建筑科学研究院.GB50009—2012建筑结构荷载规范[S].北京:中国建筑工业出版社,2012.
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