基于性能理论的RC框架结构抗震设计新法
|
摘要
根据现行规范的"三水准"设防目标定义结构的性能水平及性能目标,从满足性能目标的Pushover分析结果出发,分析了框架结构弹性刚度、设计承载力取值以及梁柱端配箍特征值三因素对Pushover曲线走势的影响.一方面,找出能够满足性能目标的结构弹性刚度及设计承载力取值;另一方面,通过变形能力设计方法,验证了现行规范框架结构的构造措施基本满足变形能力要求.建立了以规范的抗震设计过程为基础,能够满足结构性能目标的一种新的抗震设计方法,并通过算例分析说明了该方法的基本过程.
The structural performance level and performance objective are determined based on Chinese code's "three levels".Based on the performance evaluation results by pushover analysis,the elastic stiffness,the design bearing capacity value and the transverse reinforcement characteristic value of beams and columns which influence structural pushover curve are analyzed respectively.The structural elastic stiffness and design bearing capacity value that satisfy the bear capacity demand are obtained.On the other hand,it proves that the structural measures specified by current code satisfy the deformation demand.A new seismic design method for frames that could satisfy the performance objective is proposed,and an example is used to illustrate the procedure of this method.
The structural performance level and performance objective are determined based on Chinese code's "three levels".Based on the performance evaluation results by pushover analysis,the elastic stiffness,the design bearing capacity value and the transverse reinforcement characteristic value of beams and columns which influence structural pushover curve are analyzed respectively.The structural elastic stiffness and design bearing capacity value that satisfy the bear capacity demand are obtained.On the other hand,it proves that the structural measures specified by current code satisfy the deformation demand.A new seismic design method for frames that could satisfy the performance objective is proposed,and an example is used to illustrate the procedure of this method.
引文
[1]GB 50011-2001,建筑抗震设计规范[S].北京:中国建筑工业出版社,2001.GB50011-2001,Code for Seismic Design of Building Structures[S].Beijing:China Architecture and BuildingPress,2001.
[2]梁兴文,邓明科,李晓文,等.钢筋混凝土高层建筑结构基于位移的抗震设计方法研究[J].建筑结构,2006,36(7):15-22.LIANG Xing-wen,DENG Ming-ke,LI Xiao-wen,et al.Research on Displacement-based Seismic Design Method ofR.C.High-rise Structure[J].Building Structure,2006,36(7):15-22.
[3]MITCHELL D,PAULTRE P.Ductility and Overstrengthin Seismic Design of Reinforced Concrete Structures[J].Canadian Journal of Civil Engineering,1994,21:1049-1060.
[4]翟长海,谢礼立.钢筋混凝土框架结构超强研究[J].建筑结构学报,2007,28(1):101-106.ZHAI Chang-hai,XIE Li-li.Study on Overstrength of RC Frame Structures[J].Journal of Building Structures,2007,28(1):101-106.
[5]吕西林,周定松,蒋欢军.钢筋混凝土框架柱的变形能力及基于性能的抗震设计方法[J].地震工程与工程振动,2005,25(6):53-61.LU Xi-lin,ZHOU Ding-song,JIANG Huan-jun.Deformation Capacity and Performance-based Seismic DesignMethod for RC Frame Columns[J].Earthquake Engineering and Engineering Vibration,2005,25(6):53-61.
[6]MANDERJ B,PRIESTLEY MJ N,PARK R.Theoretical Stress Strain Model for Confined Concrete[J].Journalof Structural Engineering,ASCE,1988,114(8):1804-1826.
[7]周定松,吕西林,蒋欢军.钢筋混凝土框架梁的变形能力及基于性能的抗震设计方法[J].地震工程与工程振动,2005,25(4):60-66.ZHOU Ding-song,LU Xi-lin,JIANG Huan-jun.Deformation Capacity and Performance-based Seismic DesignMethod for RC Frame Beams[J].Earthquake Engineering and Engineering Vibration,2005,25(4):60-66.
[8]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 Wen-bin,QIAN Jia-ru.Rules of Elastoplastic Drift Decomposition of RC Frames and the Target Drift ofMembers[J].Engineering Mechanics,2003,20(5):32-36.
[9]PRIESTLEY MJ N.Concepts and Procedures for Direct Displacement-based Design and Assessment[J].Proceed-ings of Seismic Design Methodologies for the Next Generation of Codes,Bled,Slo-venia,1997.
[10]杨溥,李英民,熊振勇,等.能力曲线折线简化方法对比研究[J].重庆建筑大学学报,2005,27(4):59-63.YANG Pu,LI Ying-min,XIONG Zhen-yong,et al.Study on the Comparison of Different Methods of Si mplifyingCapacity Spectrum[J].Journal of Chongqing Jianzhu University,2005,27(4):59-63.
[2]梁兴文,邓明科,李晓文,等.钢筋混凝土高层建筑结构基于位移的抗震设计方法研究[J].建筑结构,2006,36(7):15-22.LIANG Xing-wen,DENG Ming-ke,LI Xiao-wen,et al.Research on Displacement-based Seismic Design Method ofR.C.High-rise Structure[J].Building Structure,2006,36(7):15-22.
[3]MITCHELL D,PAULTRE P.Ductility and Overstrengthin Seismic Design of Reinforced Concrete Structures[J].Canadian Journal of Civil Engineering,1994,21:1049-1060.
[4]翟长海,谢礼立.钢筋混凝土框架结构超强研究[J].建筑结构学报,2007,28(1):101-106.ZHAI Chang-hai,XIE Li-li.Study on Overstrength of RC Frame Structures[J].Journal of Building Structures,2007,28(1):101-106.
[5]吕西林,周定松,蒋欢军.钢筋混凝土框架柱的变形能力及基于性能的抗震设计方法[J].地震工程与工程振动,2005,25(6):53-61.LU Xi-lin,ZHOU Ding-song,JIANG Huan-jun.Deformation Capacity and Performance-based Seismic DesignMethod for RC Frame Columns[J].Earthquake Engineering and Engineering Vibration,2005,25(6):53-61.
[6]MANDERJ B,PRIESTLEY MJ N,PARK R.Theoretical Stress Strain Model for Confined Concrete[J].Journalof Structural Engineering,ASCE,1988,114(8):1804-1826.
[7]周定松,吕西林,蒋欢军.钢筋混凝土框架梁的变形能力及基于性能的抗震设计方法[J].地震工程与工程振动,2005,25(4):60-66.ZHOU Ding-song,LU Xi-lin,JIANG Huan-jun.Deformation Capacity and Performance-based Seismic DesignMethod for RC Frame Beams[J].Earthquake Engineering and Engineering Vibration,2005,25(4):60-66.
[8]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 Wen-bin,QIAN Jia-ru.Rules of Elastoplastic Drift Decomposition of RC Frames and the Target Drift ofMembers[J].Engineering Mechanics,2003,20(5):32-36.
[9]PRIESTLEY MJ N.Concepts and Procedures for Direct Displacement-based Design and Assessment[J].Proceed-ings of Seismic Design Methodologies for the Next Generation of Codes,Bled,Slo-venia,1997.
[10]杨溥,李英民,熊振勇,等.能力曲线折线简化方法对比研究[J].重庆建筑大学学报,2005,27(4):59-63.YANG Pu,LI Ying-min,XIONG Zhen-yong,et al.Study on the Comparison of Different Methods of Si mplifyingCapacity Spectrum[J].Journal of Chongqing Jianzhu University,2005,27(4):59-63.
版权所有：© 2023 中国地质图书馆 中国地质调查局地学文献中心