阻尼砌体填充墙框架结构抗震性能试验研究
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摘要
通过对阻尼砌体填充墙框架、空框架和普通砌体填充墙框架的低周反复加载试验,对比研究阻尼砌体填充墙框架结构的滞回性能、承载能力、变形能力、延性、刚度退化、耗能性能和破坏特征等。结果表明:阻尼砌体填充墙通过砌体单元往复剪切阻尼层参与结构的滞回耗能,具有良好的耗能效果,阻尼砌体填充墙框架结构滞回曲线饱满,耗能能力强,等效黏滞阻尼系数在0.1以上;阻尼砌体填充墙能为框架提供一定的抗侧力和抗侧刚度,但其对框架提供的抗侧刚度和约束效应较普通砌体填充墙大为削弱,避免了框架柱产生剪切破坏;阻尼砌体填充墙框架结构的承载力衰减速率和刚度退化速率明显较普通填充墙框架结构缓慢,极限层间位移角与空框架的基本相同,具有良好的延性和变形能力。
By the low cyclic reversed loading tests for damped infill wall-frame,bare frame and conventional infill wall-frame,the hysteretic behavior,bearing capacity,deformation capacity,ductility,stiffness degradation,energy dissipation and damage characteristic of damped infill wall-frame were studied comparatively.The results indicate that the damped infill wall contributes to the hysteretic energy of structure with its masonry units shearing the damped layer circularly,and plays good role in energy dissipating.The hysteretic loops of the frame structure with damped infill wall is plumper,the energy dissipation capacity is excellent,the equivalent viscous damping coefficient reaches above 0.1.The damped infill wall is capable of enhancing the lateral force resistance capacity and the lateral stiffness of the frame structure.But its stiffness effect and confined effect is much weaker than that of the conventional infill wall which prevent the frame columns from shear damage effectively.The damped infill wall-frame' s strength degradation rate and the stiffness degradation rate are much slower than that of the conventionally infill frame.Its ultimate inter-story drift ratio is basically the same as that of the bare frame.The damped infill wall frame has good ductility and deformation capacity.
By the low cyclic reversed loading tests for damped infill wall-frame,bare frame and conventional infill wall-frame,the hysteretic behavior,bearing capacity,deformation capacity,ductility,stiffness degradation,energy dissipation and damage characteristic of damped infill wall-frame were studied comparatively.The results indicate that the damped infill wall contributes to the hysteretic energy of structure with its masonry units shearing the damped layer circularly,and plays good role in energy dissipating.The hysteretic loops of the frame structure with damped infill wall is plumper,the energy dissipation capacity is excellent,the equivalent viscous damping coefficient reaches above 0.1.The damped infill wall is capable of enhancing the lateral force resistance capacity and the lateral stiffness of the frame structure.But its stiffness effect and confined effect is much weaker than that of the conventional infill wall which prevent the frame columns from shear damage effectively.The damped infill wall-frame' s strength degradation rate and the stiffness degradation rate are much slower than that of the conventionally infill frame.Its ultimate inter-story drift ratio is basically the same as that of the bare frame.The damped infill wall frame has good ductility and deformation capacity.
引文
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[16]周云,郭阳照,廖奕发,等.阻尼填充墙单元性能试验研究[J].土木工程学报,2013,46(5):56-63.(ZHOUYun,GUO Yangzhao,LIAO Yifa,et al.Experimentalstudy on the performances of damped infill wall unit[J].China Civil Engineering Journal,2013,46(5):56-63.(in Chinese))
[17]JGJ101—1996建筑抗震试验方法规程[S].北京:中国建筑工业出版社,1997.(JGJ101—1996Specification of testing method for earthquake resistantbuildings[S].Beijing:China Architecture&BuildingPress,1997.(in Chinese))
[2]Sahota M K,Riddington J R.Experimentalinvestigation into using lead to reduce vertical loadtransfer in infilled frames[J].Engineering Structures,2001,23(1):94-101.
[3]瞿伟廉,盛克苏,李肇胤.设置耗能横缝的填充墙对多层框架地震反应的控制[J].建筑结构学报,1991,12(2):42-50.(QU Weilian,CHENG Kesu,LIZhaoyin.Control of earthquake responses of multistoryframe structures by filler wall with horizontal energydissipation slit[J].Journal of Building Structures,1991,12(2):42-50.(in Chinese))
[4]Gian Michele Calvi,Davide Bolognini.Seismicresponse of reinforced concrete frames infilled withweakly reinforced masonry panels[J].Journal ofEarthquake Engineering,2001,5(2):153-185.
[5]Kakaletsis D.Comparison of CFRP and alternativeseismic retrofitting techniques for bare and infill RCframe[J].Journal of Composites for Construction,2011,15(4):565-577.
[6]Mohammadi M,Akrami V,Mohammadi Ghazi R.Methods to improve infilled frame ductility[J].Journalof Structural Engineering,ASCE,2011,137(6):646-653.
[7]唐兴荣,杨亮,刘利花,等.不同构造措施的砌体填充墙框架结构抗震性能试验研究[J].建筑结构学报,2012,33(10):75-83.(TANG Xingrong,YANGLiang,LIU Lihua,et al.Experimental study on seismicbehavior of masonry in-filled reinforced concrete framestructure with different constructional measures[J].Journal of Building Structures,2012,33(10):75-83.(in Chinese))
[8]唐兴荣,刘利花,周振轶,等.带竖缝砌体填充墙钢筋混凝土框架结构抗震性能试验研究[J].建筑结构学报,2012,33(10):84-93.(TANG Xingrong,LIULihua,ZHOU Zhenyi,et al.Experimental study onseismic behavior of slitted masonry in-filled reinforcedconcrete frame structure[J].Journal of BuildingStructures,2012,33(10):84-93.(in Chinese))
[9]汤丁.框架-密肋耗能复合墙结构与框架-砖填充墙结构抗震性能的对比分析[D].北京:北京工业大学,2010:7-8.(TANG Ding.The comparison ofseismic performance between frame-multi-ribbedcomposite wall structure and infilled frame structure[D].Beijing:Beijing University of Technology,2010:7-8.(in Chinese))
[10]郭阳照,周云,朱勇,等.框架填充墙抗震性能研究的回顾与前瞻[J].工程抗震与加固改造,2012,34(6):1-8.(GUO Yangzhao,ZHOU Yun,ZHU Yong,et al.The retrospect and prospect of the studiesconcerning the seismic performance of infill framestructures[J].Earthquake Resistant Engineeting andRetrofitting,2012,34(6):1-8.(in Chinese))
[11]周云,彭水淋,郭阳照,等.提高框架填充墙结构抗震性能的新途径和新方法[J].防灾减灾工程学报,2011,31(5):469-476.(ZHOU Yun,PENG Shuilin,GUO Yangzhao,et al.The new ways and methods toimprove the seismic performance of infilled-framestructures[J].Journal of Disaster Prevention Project,2011,31(5):469-476.(in Chinese))
[12]周云,郭阳照.一种用于框架结构的阻尼抗震填充墙板:中国,CN102268900A[P].2011-06-11.(ZHOUYun,GUO Yangzhao.Damping seismic fillingwallboard of frame structures:China,CN102268900A[P].2011-06-11.(in Chinese))
[13]周云,彭水淋,尹庆利,等.新型框架阻尼填充墙的设计与分析[J].工程抗震与加固改造,2010,33(4):79-83(ZHOU Yun,PENG Shuilin,YING Qingli,et al.Design and analysis of a new-type damped infillwall[J].Earthquake Resistant Engineeting andRetrofitting,2010,33(4):79-83.(in Chinese))
[14]GB50010—2010混凝土结构设计规范[S].北京:中国建筑工业出版社,2010.(GB50010—2010Code for design of concrete structures[S].Beijing:China Architecture&Building Press,2010.(inChinese))
[15]GB50011—2010建筑抗震设计规范[S].北京:中国建筑工业出版社,2010.(GB50011—2010Codefor seismic design of buildings[S].Beijing:ChinaArchitecture&Building Press,2010.(in Chinese))
[16]周云,郭阳照,廖奕发,等.阻尼填充墙单元性能试验研究[J].土木工程学报,2013,46(5):56-63.(ZHOUYun,GUO Yangzhao,LIAO Yifa,et al.Experimentalstudy on the performances of damped infill wall unit[J].China Civil Engineering Journal,2013,46(5):56-63.(in Chinese))
[17]JGJ101—1996建筑抗震试验方法规程[S].北京:中国建筑工业出版社,1997.(JGJ101—1996Specification of testing method for earthquake resistantbuildings[S].Beijing:China Architecture&BuildingPress,1997.(in Chinese))
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