部分柱顶滑移钢筋混凝土框剪结构的深化研究
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摘要
从抗倒塌角度出发,采用理论分析和算例计算相结合的方法,对部分柱顶滑移钢筋混凝土框剪结构的框架梁设计、摩擦系数下限值估算、摩擦支座中震耗能等进行了探讨。研究结果表明:1)考虑框架梁塑性铰区受拉纵筋强化并调整设计步骤后,框架梁的经济性更好;2)基于D值法的摩擦系数下限值估算方法与现行规范联系紧密,便于工程人员应用;3)中震作用下摩擦支座可提供较大附加阻尼比,耗能效应较为明显。
In view of the anti-collapse design of RC frame-shear wall structures,some studies on the RC frame-shear wall structures with partial columns sliding at upper ends are presented in this paper,including design of the frame beams,assessment of the lower limit value of friction coefficient,and energy dissipation analysis of the friction supports.Simulation results show that:(a) by taking the hardening of tensile reinforcements into account and by adjusting the design procedures,the frame beams may be designed more economically;(b) the assessment method for the low limit value of friction coefficient is related to the current design code and easier for engineering application;and(c) a larger additional damping ratio can be provided by the friction supports under moderate earthquake,leading to considerable energy-dissipated effect.
In view of the anti-collapse design of RC frame-shear wall structures,some studies on the RC frame-shear wall structures with partial columns sliding at upper ends are presented in this paper,including design of the frame beams,assessment of the lower limit value of friction coefficient,and energy dissipation analysis of the friction supports.Simulation results show that:(a) by taking the hardening of tensile reinforcements into account and by adjusting the design procedures,the frame beams may be designed more economically;(b) the assessment method for the low limit value of friction coefficient is related to the current design code and easier for engineering application;and(c) a larger additional damping ratio can be provided by the friction supports under moderate earthquake,leading to considerable energy-dissipated effect.
引文
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[19]周颖,吕西林.中震弹性设计与中震不屈服设计的理解及实施[J].结构工程师,2008,24(6):1―5.Zhou Ying,Lu Xilin.Interpretation and implementationof elastic and non-yielding design under moderateearthquake[J].Structural Engineer,2008,24(6):1―5.(in Chinese)
[2]Moore D B.The UK and European regulations foraccidental actions[C].Proceedings of Workshop onPrevention of Progressive Collapse,National Institute ofBuilding Sciences,Washington,D.C.,2002.
[3]BS 8110-1,Structural use of concrete:Part 1:Code ofpractice for design and construction[S].London:BritishStandards Institution,1997.
[4]American Concrete Institute.Building code requirementsfor structural concrete(ACI 318M-02)and commentary(ACI 318RM-02)[S].Farmington Hills,Michigan:American Concrete Institute,2002.
[5]GSA2005,Progressive collapse analysis and designguidelines for new federal office buildings and majormodernization project[S].Washington D C:the U.S.:General Services Administration,2005.
[6]UFC 4-023-03,Design of structures to resist progressivecollapse[S].Washington D C:Department of Defense,USA,2005.
[7]GB50011-2001,建筑抗震设计规范[S].北京:中国建筑工业出版社,2001.GB 50011-2001,Code for seismic design of buildings[S].Beijing:China Architecture and Building Press,2001.(inChinese)
[8]于山,苏幼坡,马东辉.钢筋混凝土建筑抗倒塌设计[J].地震工程与工程振动,2005,25(5):67―72.Yu Shan,Su Youpo,Ma Donghui.Design of reinforcedconcrete buildings to resist progressive collapse[J].Earthquake Engineering and Engineering Vibration,2005,25(5):67―72.(in Chinese)
[9]丰定国,王社良.抗震结构设计[M].武汉:武汉理工大学出版社,2001:117.Feng Dingguo,Wang Sheliang.Seismic design ofstructure[M].Wuhan:Wuhan University of TechnologyPress,2001:117.(in Chinese)
[10]Astaneh-Asl A.Progressive collapse prevention in newand existing buildings[C].Proceedings of the 9th ArabStructural Engineering Conference Abu Dhabi,UAE,2003:1001―1008.
[11]吴波,陈展图.抗倒塌柱顶部分滑移钢筋混凝土框架结构的初步研究[J].地震工程与工程振动,2008,28(4):82―87.Wu Bo,Chen Zhantu.Preliminary study on RC framestructures with sliding at partial column upper ends forpreventing collapse[J].Earthquake Engineering andEngineering Vibration,2008,28(4):82―87.(in Chinese)
[12]吴波,吕文龙,熊伟.部分柱顶滑移钢筋混凝土框剪结构[J].工程力学,2011,28(4):82―88,95.Wu Bo,Lu Wenlong,Xiong Wei.RC frame-shear wallstructures with partial columns sliding at upper ends[J].Engineering Mechanics,2011,28(4):82―88,95.(inChinese)
[13]GB50010-2002,混凝土结构设计规范[S].北京:中国建筑工业出版社,2002.GB 50010-2002,Code for design of concrete structures[S].Beijing:China Architecture and Building Press,2002.(in Chinese)
[14]程文瀼,颜德姮,王铁成.混凝土结构(上册)[M].北京:中国建筑工业出版社,2008:26.Cheng Wenrang,Yan Deheng,Wang Tiecheng.Concretestructures(Part I)[M].Beijing:China Architecture andBuilding Press,2008:26.(in Chinese)
[15]GB1499.2-2007,钢筋混凝土用钢第2部分:热轧带肋钢筋[S].北京:中国标准出版社,2007.GB 1499.2-2007,Steel for the reinforcement of concretepart 2:Hot rolled ribbed bars[S].Beijing:StandardsPress of China,2007.(in Chinese)
[16]龙驭球,包世华.结构力学I,基本教程[M].北京:高等教育出版社,2006:281.Long Yuqiu,Bao Shihua.Structural mechanics I,basictutorial[M].Beijing:Higher Education Press,2006:281.(in Chinese)
[17]包世华,方鄂华.高层建筑结构设计[M].北京:清华大学出版社,1990:78―79.Bao Shihua,Fang Ehua.Structural design of tall building[M].Beijing:Tsinghua University Press,1990:78―79.(in Chinese)
[18]戴国莹.房屋建筑的隔震设计和消能减震设计,GB50011-2001《建筑抗震设计规范》讲座之七[J].建筑科学,2002,18(5):56―62.Dai Guoying.Seismic isolation design and seismicenergy dissipation design of buildings,Lecture 7 ofGB50011-2001‘Code for seismic design of buildings’[J].Building Science,2002,18(5):56―62.(in Chinese)
[19]周颖,吕西林.中震弹性设计与中震不屈服设计的理解及实施[J].结构工程师,2008,24(6):1―5.Zhou Ying,Lu Xilin.Interpretation and implementationof elastic and non-yielding design under moderateearthquake[J].Structural Engineer,2008,24(6):1―5.(in Chinese)
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