钢筋混凝土框架填充墙结构抗震性能分析及评价方法研究
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摘要
汶川地震中,钢筋混凝土框架填充墙结构产生了严重的破坏,研究影响其抗震性能的关键因素并提出合理的性能评价方法具有实际意义。本文针对汶川地震中一严重破坏的钢筋混凝土框架填充墙结构进行了仿真分析,验证了建模所选取参数及方法的合理性,再根据汶川地震中出现的典型震害分析填充墙沿楼层高度布置形式、结构层数、填充墙的开洞率及构造措施等对结构抗震性能产生的影响。结果表明:填充墙不均匀布置对框架结构抗震不利;填充墙开洞过大易产生短柱破坏;合理的构造措施可有效阻止贯穿型大裂缝的出现等。最后,本文还对主体框架和填充墙分别提出了性态化设计目标,结合四节点墙体模型,利用能力谱法能较好地评价结构的抗震性能水平,且证明了按照规范对框架填充墙结构周期进行折减不够合理。
There are many kinds of serious damage for RC infilled frame in Wenchuan earthquake,so it is significant to study the key factors of seismic performance and propose a reasonable evaluation method for the seismic capability.An actual damaged RC infilled frame in Wenchuan earthquake is simulated and analyzed,then the reasonability of the model parameters and the modeling method are verificated.Based on various typical damage in Wenchuan earthquake,influence of vertical layout and the hole rate of infilled wall,the floor number and the structural measure on seismic performance is analyzed.The conclusions are as follows,it is not beneficial for the infilled frame when the infilled walls are not evently distributed.It is easy to present the short column damage caused by large hole of infilled walls.Reasonable strutural measure can avoid large cracks.State goals are proposed for the main frame and the infilled wall respectively.It is achievable to evaluate the struture performance level applying capacity spectrum method and combining the four-node masonry panel element.It is not reasonable to reduce the period of the infilled frame accordance with the Chinese norm.
There are many kinds of serious damage for RC infilled frame in Wenchuan earthquake,so it is significant to study the key factors of seismic performance and propose a reasonable evaluation method for the seismic capability.An actual damaged RC infilled frame in Wenchuan earthquake is simulated and analyzed,then the reasonability of the model parameters and the modeling method are verificated.Based on various typical damage in Wenchuan earthquake,influence of vertical layout and the hole rate of infilled wall,the floor number and the structural measure on seismic performance is analyzed.The conclusions are as follows,it is not beneficial for the infilled frame when the infilled walls are not evently distributed.It is easy to present the short column damage caused by large hole of infilled walls.Reasonable strutural measure can avoid large cracks.State goals are proposed for the main frame and the infilled wall respectively.It is achievable to evaluate the struture performance level applying capacity spectrum method and combining the four-node masonry panel element.It is not reasonable to reduce the period of the infilled frame accordance with the Chinese norm.
引文
[1]JGJ3-2002,高层建筑混凝土结构技术规程[S]JGJ3-2002,Technical Specification for ConcreteStructures of Tall Building[S](in Chinese)
[2]GB50011-2001,建筑抗震设计规范[S]GB50011-2001,Code for Seismic Design of Buildings[S](in Chinese)
[3]Pavel P,Robert L,et al.Numerical Analyses forMasonry Vault[EB/OL.]http://www.technion.ac.il/.2009-12-3
[4]李祚华.高层钢筋混凝土结构损伤模型及地震损伤描述[D.]哈尔滨:哈尔滨工业大学,2009Li Zuo-hua.Damage model and seismic damagedescription of high-rise reinforced concrete structures[D.]Harbin:Harbin Institute of Technology,2009(inChinese)
[5]马爱军,周传月,王旭.Patran和Nastran有限元分析专业教程[M.]北京:清华大学出版社,2005Ma Ai-jun,Zhou Chuan,Wang Xu.Patran and Nastranprofessional tutorial of finite element analysis[M].Beijing:Tsinghua University Press,2005(in Chinese)
[6]李英民,韩军,田启祥,等.填充墙对框架结构抗震性能的影响[J.]地震工程与工程振动,2009,29(3):51～58Li Ying-min,Han Jun,et al.Study on influence ofinfilled walls on seismic performance of RC framestructures[J.]Earthquake Engineering and EngineeringVibration,2009,29(3):51～58(in Chinese)
[7]张守斌,聂昊.增量动力分析方法及其在性能评估中的应用[J.]建筑与结构设计,2007,6(3):33～35Zhang Shou-bin,Nie Hao.Incremental dynamicanalysis Method and its application on performanceevaluation[J].Architectural and Structural Design,2007,6(3):33～35(in Chinese)
[8]Fajfar P A.Nonlinear Analysis method for performancebased seismic design[J.]Earthquake Spectra,2000,16(3):573～592
[9]王武春.钢筋混凝土框架-砌体墙结构性能的实验研究[J.]工程抗震,2003,(4):27～30Wang Wu-chun.Test research of reinforced concreteframe with infilled masonry wall[J.]EarthquakeResistant Engineering,2003,(4):27～30(inChinese)
[10]孙跃东,肖建庄,周德源,张鹏.再生轻质砌块填充墙再生混凝土框架抗震性能的试验研究[J.]地震工程与工程振动,2005,(25):124～131Sun Yue-dong,Xiao Jian-zhuang,Zhou De-yuan,Zhang Peng.Experimental research on seismic behaviorof recycled concrete frame filled with recycledlightweight masonry blocks[J.]Earthquake Engineeringand Engineering Vibration,2005,(25):124～131(inChinese)
[11]Mehrabi A B,Shing P B.Experimental evaluation ofmasonry-infilled frames[J].Journal of the StruturalEngineering(ASCE),1996,122(3):228～236
[12]吉小萍,董军.Pushover能力谱方法的基本原理及应用[J.]四川建筑科学研究,2005,35(3):148～151Ji Xin-ping,Dong Jun.Principle and application ofPushover capacity spectrum[J.]Sichuan BuildingScience,2005,35(3):148～151(in Chinese)
[13]Crisafulli F J.Seismic behaviour of reinforced concretestructures with masonry infills[D.]CanterburyUniversity,1997
[2]GB50011-2001,建筑抗震设计规范[S]GB50011-2001,Code for Seismic Design of Buildings[S](in Chinese)
[3]Pavel P,Robert L,et al.Numerical Analyses forMasonry Vault[EB/OL.]http://www.technion.ac.il/.2009-12-3
[4]李祚华.高层钢筋混凝土结构损伤模型及地震损伤描述[D.]哈尔滨:哈尔滨工业大学,2009Li Zuo-hua.Damage model and seismic damagedescription of high-rise reinforced concrete structures[D.]Harbin:Harbin Institute of Technology,2009(inChinese)
[5]马爱军,周传月,王旭.Patran和Nastran有限元分析专业教程[M.]北京:清华大学出版社,2005Ma Ai-jun,Zhou Chuan,Wang Xu.Patran and Nastranprofessional tutorial of finite element analysis[M].Beijing:Tsinghua University Press,2005(in Chinese)
[6]李英民,韩军,田启祥,等.填充墙对框架结构抗震性能的影响[J.]地震工程与工程振动,2009,29(3):51～58Li Ying-min,Han Jun,et al.Study on influence ofinfilled walls on seismic performance of RC framestructures[J.]Earthquake Engineering and EngineeringVibration,2009,29(3):51～58(in Chinese)
[7]张守斌,聂昊.增量动力分析方法及其在性能评估中的应用[J.]建筑与结构设计,2007,6(3):33～35Zhang Shou-bin,Nie Hao.Incremental dynamicanalysis Method and its application on performanceevaluation[J].Architectural and Structural Design,2007,6(3):33～35(in Chinese)
[8]Fajfar P A.Nonlinear Analysis method for performancebased seismic design[J.]Earthquake Spectra,2000,16(3):573～592
[9]王武春.钢筋混凝土框架-砌体墙结构性能的实验研究[J.]工程抗震,2003,(4):27～30Wang Wu-chun.Test research of reinforced concreteframe with infilled masonry wall[J.]EarthquakeResistant Engineering,2003,(4):27～30(inChinese)
[10]孙跃东,肖建庄,周德源,张鹏.再生轻质砌块填充墙再生混凝土框架抗震性能的试验研究[J.]地震工程与工程振动,2005,(25):124～131Sun Yue-dong,Xiao Jian-zhuang,Zhou De-yuan,Zhang Peng.Experimental research on seismic behaviorof recycled concrete frame filled with recycledlightweight masonry blocks[J.]Earthquake Engineeringand Engineering Vibration,2005,(25):124～131(inChinese)
[11]Mehrabi A B,Shing P B.Experimental evaluation ofmasonry-infilled frames[J].Journal of the StruturalEngineering(ASCE),1996,122(3):228～236
[12]吉小萍,董军.Pushover能力谱方法的基本原理及应用[J.]四川建筑科学研究,2005,35(3):148～151Ji Xin-ping,Dong Jun.Principle and application ofPushover capacity spectrum[J.]Sichuan BuildingScience,2005,35(3):148～151(in Chinese)
[13]Crisafulli F J.Seismic behaviour of reinforced concretestructures with masonry infills[D.]CanterburyUniversity,1997
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