型钢混凝土框架-核心筒混合结构地震易损性分析
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摘要
增量动力分析(IDA)是进行结构抗震性能评估的一种有效方法,根据IDA方法的原理和特点,提出用其进行型钢混凝土(SRC)框架-核心筒混合结构地震易损性分析的具体步骤;将SRC框架-混凝土核心筒的性能水平划分为5档,在统计分析基础上提出各性能水平的层间位移角限值,并进一步建立SRC框架梁柱和混凝土剪力墙的单元模型。采用IDA方法对一规则SRC框架-混凝土核心筒进行分析,以PGA和Sa作为地震强度参数得到结构地震易损性曲线,分析表明,结构超越生命安全和接近倒塌的概率较小,其在不同地震作用下均具有良好的抗震性能。
Incremental dynamic analysis( IDA) is an effective method for structural seismic performance evaluation. According to the principle and characteristics of IDA method,the concrete steps of seismic vulnerability analysis for the steel reinforced concrete( SRC)frame-core tube hybrid structure are put forward. The performance level of the SRC frame-concrete core tube is divided into five grades,and the maximum inter-storey drift angles of different performance levels are proposed based on statistical analysis.Furthermore,the element models of SRC frame beam-column and concrete shear wall are established. A regular SRC frame-concrete core wall is analyzed using IDA method,and the structure seismic vulnerability curve is derived with PGA and Saas earthquake intensity parameter. The result shows that the probability of the structure beyond the life safety and close to the collapse is small,it has good seismic performance under different earthquake action.
Incremental dynamic analysis( IDA) is an effective method for structural seismic performance evaluation. According to the principle and characteristics of IDA method,the concrete steps of seismic vulnerability analysis for the steel reinforced concrete( SRC)frame-core tube hybrid structure are put forward. The performance level of the SRC frame-concrete core tube is divided into five grades,and the maximum inter-storey drift angles of different performance levels are proposed based on statistical analysis.Furthermore,the element models of SRC frame beam-column and concrete shear wall are established. A regular SRC frame-concrete core wall is analyzed using IDA method,and the structure seismic vulnerability curve is derived with PGA and Saas earthquake intensity parameter. The result shows that the probability of the structure beyond the life safety and close to the collapse is small,it has good seismic performance under different earthquake action.
引文
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[9]李坤.高层建筑混凝土框架-核心筒结构抗震性能和地震损伤研究[D].西安:西安建筑科技大学,2014Li Kun.Study on Seismic Behavior and Damage Evolution of RC Frame-core Wall Structures[D].Xi’an:Xi’an University of Architecture and Technology,2014(in Chinese)
[10]GB50010-2010,混凝土结构设计规范[S]GB50010-2010,Code for Design of Concrete Structure[S](in Chinese)
[11]Jalayer F,Cornell C.A.A Technical Framework for Probability-based Demand and Capacity Factor Design(DCFD)Seismic Formats[R].California:Pacific Earthquake Engineering Research Center,2004
[2]Vamvatsikos D,Cornell C A.Incremental Dynamic Analysis[J].Earthquake Engineering and Structural Dynamics,2002,31(3):491~514
[3]薛建阳,赵鸿铁.型钢钢筋混凝土框架振动台试验及弹塑性动力分析[J].土木工程学报,2000,33(2):30~33Xue Jian-yang,Zhao Hong-tie.Shaking Table Experiment and Elastoplastic Analysis of Steel Reinforced Concrete Frame[J].China Civil Engineering Journal,2000,33(2):30~34(in Chinese)
[4]GB50011-2010,建筑抗震设计规范[S]GB50011-2010,Code for Seismic Design of Buildings[S](in Chinese)
[5]苏宁粉.增量动力分析法评估高层及超高层结构抗震性能研究[D].上海:同济大学,2013Su Ning-fen.Seismic Performance Evaluation of Tall and Super-tall Structures by Using Incremental Dynamic Analysis[D].Shanghai:Tongji University,2013(in Chinese)
[6]吕西林,苏宁粉,周颖.复杂高层结构基于增量动力分析法的地震易损性分析[J].地震工程与工程振动,2012,32(5):20~25Lv Xi-lin,Su Ning-fen,Zhou Ying.IDA-based Seismic Fragility Analysis of A Complex High-rise Structure[J].Journal of Earthquake Engineering and Engineering Vibration,2012,32(5):20~25(in Chinese)
[7]吕西林.超限高层建筑工程抗震设计指南(第二版)[M].上海:同济大学出版社,2009Lv Xi-lin.Seismic Design Guidelines for Tall Buildings Beyond the Scope of Design Codes(Second Edition)[M].Shanghai:Tongji University Press,2009(in Chinese)
[8]JGJ3-2010,高层建筑混凝土结构技术规程[S]JGJ3-2010,Technical Specifications for Concrete Structures of Tall Buildings[S](in Chinese)
[9]李坤.高层建筑混凝土框架-核心筒结构抗震性能和地震损伤研究[D].西安:西安建筑科技大学,2014Li Kun.Study on Seismic Behavior and Damage Evolution of RC Frame-core Wall Structures[D].Xi’an:Xi’an University of Architecture and Technology,2014(in Chinese)
[10]GB50010-2010,混凝土结构设计规范[S]GB50010-2010,Code for Design of Concrete Structure[S](in Chinese)
[11]Jalayer F,Cornell C.A.A Technical Framework for Probability-based Demand and Capacity Factor Design(DCFD)Seismic Formats[R].California:Pacific Earthquake Engineering Research Center,2004
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