混凝土空心砌块填充墙RC框架抗震性能试验研究
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摘要
通过对4榀单层单跨填充墙RC框架试件在水平低周往复荷载作用下的抗震性能试验,研究了填充墙砌块类型及高宽比对框架结构抗震性能的影响,对试件的破坏特征、滞回曲线、骨架曲线、位移延性、刚度退化、强度退化和耗能性能等进行了分析。试验结果表明:框架柱和填充墙的受剪承载力之比是影响结构破坏形态的重要因素,满足"强框架,弱填充墙"要求的4个试件均发生梁柱端塑性铰破坏,具有良好的抗倒塌性能;填充墙的存在影响了结构的滞回性能,提高了框架结构的抗侧刚度、水平承载力和滞回耗能能力;在相同位移幅值下,混凝土空心砌块填充墙的破坏程度比实心黏土砖填充墙的严重,存在一定的安全隐患。
Four reinforced concrete frames with infilling walls were tested under cyclic loading to investigate the effects of masonry material and height-width ratio on the seismic behavior of specimens.Based on the test results,the damage characteristics,load-displacement hysteretic curves,skeleton curves,bearing capacity,displacement ductility,rigidity degradation,strength degradation and energy dissipation were analyzed.The test results indicate that the shear strength ratio of frame to infilling wall is a critical factor that influences the failure mode of frame.Plastic hinges occur at the end of column and beam.A satisfactory collapse-resistance is observed for the specimens which can meet the principle of 'strong frame and weak infilling wall'.The infilling wall enhances the lateral stiffness,ultimate capacity,the energy dissipation capacity of frames.And the hysteretic characteristics of frames.The damage degree of concrete hollow blocks infilling wall is more serious than that of solid clay bricks.
Four reinforced concrete frames with infilling walls were tested under cyclic loading to investigate the effects of masonry material and height-width ratio on the seismic behavior of specimens.Based on the test results,the damage characteristics,load-displacement hysteretic curves,skeleton curves,bearing capacity,displacement ductility,rigidity degradation,strength degradation and energy dissipation were analyzed.The test results indicate that the shear strength ratio of frame to infilling wall is a critical factor that influences the failure mode of frame.Plastic hinges occur at the end of column and beam.A satisfactory collapse-resistance is observed for the specimens which can meet the principle of 'strong frame and weak infilling wall'.The infilling wall enhances the lateral stiffness,ultimate capacity,the energy dissipation capacity of frames.And the hysteretic characteristics of frames.The damage degree of concrete hollow blocks infilling wall is more serious than that of solid clay bricks.
引文
[1]郭子雄,吴毅彬,黄群贤.砌体填充墙框架结构抗震性能研究现状与展望[J].地震工程与工程震动,2008,28(6):172-177.(Guo Zixiong,Wu Yibin,Huang Qunxian.Research and development in seismicbehavior of infilled-frame structures[J].Journal ofEarthquake Engineering and Engineering Vibration,2008,28(6):172-177.(in Chinese))
[2]Chaker A A,Cherifati A.Influence of masonry infillpanels on the vibration and stiffness characteristics ofR/C frame buildings[J].Earthquake Engineering andStructural Dynamics,1999,28(10):1061-1065.
[3]Ricardo P.Performance evaluation of masonry-inflledRC frames under cyclic loading based on damagemechanics[J].Engineering Structures,2005,27(8):1278-1288.
[4]Kose M M.Parameters affecting the fundamental periodof RC buildings with infill walls[J].EngineeringStructures,2009,31(1):93-102.
[5]清华大学、西南交通大学、北京交通大学土木工程结构专家组.汉川地震建筑震害分析[J].建筑结构学报,2008,29(4):1-9.(Civil and Structural Groupsof Tsinghua University,Xinan Jiaotong University,Beijing Jiaotong University.Analysis on seismic damageof buildings in the Wenchuan Earthquake[J].Journalof Building Structures,2008,29(4):1-9.(inChinese))
[6]吴绮芸,田家弊,徐显毅.砖墙填充框架在单向及反复水平荷载作用下的性能研究[J].建筑结构学报,1980,1(4):38-44.(WU Yiyun,TIAN Jiabi,XU Xianyi.A study of the behavior of brick infilledframe structures under monotonic and reversed cyclichorizontal loads[J].Journal of Building Structures,1980,1(4):38-44.(in Chinese))
[7]童岳生,钱国芳.砖填充墙钢筋混凝土框架的变形性能及承载能力[J].西安冶金建筑学院学报,1985,42(2):1-21.(Tong Yuesheng,Quan Guofang.Deformation behavior and load capacity of reinforcedconcrete frames with brick filler walls[J].Journal ofXi’an Institute of Metallurgy and ConstructionEngineering,1985,42(2):1-21.(in Chinese))
[8]朱荣华,沈聚敏.砖填充墙钢筋混凝土框架拟动力地震反应试验及理论分析[J].建筑结构学报,1996,17(4):27-34.(ZHU Ronghua,SHEN Jumin.Pseudo-dynamic earthquake response test andtheoretical analysis of RC frame with brick masonryinfilling[J].Journal of Building Structures,1996,17(4):27-34.(in Chinese))
[9]郭子雄,黄群贤,魏荣丰,等.填充墙不规则布置对RC框架抗震性能影响试验研究[J].土木工程学报,2010,43(11):46-54.(Guo Zixiong,Huang Qunxian,Wei Rongfeng,et al.Experimental study on seismicbehavior of RC frames infilled with masonry wallsirregularly[J].China Civil Engineering Journal,2010,43(11):46-54.(in Chinese))
[10]郭子雄,黄群贤,魏荣丰,等.带楼板填充墙RC框架抗震性能试验研究[J].建筑结构学报,2009,30(增刊2):127-132.(GUO Zixiong,HUANG Qunxian,WEI Rongfeng,et al.Experimental study on seismicbehavior of RC frames with slab infilled with masonrywalls[J].Journal of Building Structures,2009,30(Suppl.2):127-132.(in Chinese))
[2]Chaker A A,Cherifati A.Influence of masonry infillpanels on the vibration and stiffness characteristics ofR/C frame buildings[J].Earthquake Engineering andStructural Dynamics,1999,28(10):1061-1065.
[3]Ricardo P.Performance evaluation of masonry-inflledRC frames under cyclic loading based on damagemechanics[J].Engineering Structures,2005,27(8):1278-1288.
[4]Kose M M.Parameters affecting the fundamental periodof RC buildings with infill walls[J].EngineeringStructures,2009,31(1):93-102.
[5]清华大学、西南交通大学、北京交通大学土木工程结构专家组.汉川地震建筑震害分析[J].建筑结构学报,2008,29(4):1-9.(Civil and Structural Groupsof Tsinghua University,Xinan Jiaotong University,Beijing Jiaotong University.Analysis on seismic damageof buildings in the Wenchuan Earthquake[J].Journalof Building Structures,2008,29(4):1-9.(inChinese))
[6]吴绮芸,田家弊,徐显毅.砖墙填充框架在单向及反复水平荷载作用下的性能研究[J].建筑结构学报,1980,1(4):38-44.(WU Yiyun,TIAN Jiabi,XU Xianyi.A study of the behavior of brick infilledframe structures under monotonic and reversed cyclichorizontal loads[J].Journal of Building Structures,1980,1(4):38-44.(in Chinese))
[7]童岳生,钱国芳.砖填充墙钢筋混凝土框架的变形性能及承载能力[J].西安冶金建筑学院学报,1985,42(2):1-21.(Tong Yuesheng,Quan Guofang.Deformation behavior and load capacity of reinforcedconcrete frames with brick filler walls[J].Journal ofXi’an Institute of Metallurgy and ConstructionEngineering,1985,42(2):1-21.(in Chinese))
[8]朱荣华,沈聚敏.砖填充墙钢筋混凝土框架拟动力地震反应试验及理论分析[J].建筑结构学报,1996,17(4):27-34.(ZHU Ronghua,SHEN Jumin.Pseudo-dynamic earthquake response test andtheoretical analysis of RC frame with brick masonryinfilling[J].Journal of Building Structures,1996,17(4):27-34.(in Chinese))
[9]郭子雄,黄群贤,魏荣丰,等.填充墙不规则布置对RC框架抗震性能影响试验研究[J].土木工程学报,2010,43(11):46-54.(Guo Zixiong,Huang Qunxian,Wei Rongfeng,et al.Experimental study on seismicbehavior of RC frames infilled with masonry wallsirregularly[J].China Civil Engineering Journal,2010,43(11):46-54.(in Chinese))
[10]郭子雄,黄群贤,魏荣丰,等.带楼板填充墙RC框架抗震性能试验研究[J].建筑结构学报,2009,30(增刊2):127-132.(GUO Zixiong,HUANG Qunxian,WEI Rongfeng,et al.Experimental study on seismicbehavior of RC frames with slab infilled with masonrywalls[J].Journal of Building Structures,2009,30(Suppl.2):127-132.(in Chinese))
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