足尺砌体填充墙RC框架抗震性能试验研究
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摘要
为研究砌体类型对填充墙框架结构抗震性能影响,开展了4榀足尺填充墙框架与1榀空框架试件的水平低周往复荷载试验。填充墙砌块类型包括空心黏土砖、混凝土空心砌块、陶粒混凝土砌块和加气混凝土砌块4种。基于试验结果分析了不同砌块类型对填充墙框架破坏形态、滞回特性、骨架曲线、耗能性能、承载力和刚度退化等的影响。试验结果表明:加气混凝土砌块填充墙在整个加载过程中均表现出良好的整体性,而其他三种砌块填充墙在位移角1/50时即出现局部压溃剥落,并随位移角幅值增加破坏逐步加重;砌体填充墙的存在增强了填充墙框架的初始刚度和屈服割线刚度,同时也明显增大了其水平承载力;各填充墙框架试件的位移延性系数均大于5,其中加气混凝土砌块填充墙框架的承载力和刚度退化较慢,表现出比其他三种砌体填充墙框架更好的变形能力;基于试验结果并结合国内外框架抗震性能水平的划分标准,提出了砌体填充墙框架结构不同抗震性能水平的层间位移角限值。
Cyclic loading tests were carried out on four full-scale infilled RC frames and one bare RC frame to investigate the effects of different infilled masonry on the seismic behavior of RC frame structures. The infilling masonry included hollow clay bricks,hollow concrete blocks,light aggregate concrete blocks and aerated concrete blocks. The failure modes,hysteretic loops,skeleton curves,energy-dissipation capacity,and degradation of bearing capacity and stiffness of the specimens were comprehensively analyzed. Experimental results show that,the infilling wall using aerated concrete block shows good integrity during the whole loading process,whilst the other three infilling walls appear spalling under 1/50 drift angle,and the damage degree becomes more serious with the increase of drift amplitude. The infilling masonry greatly enhances the initial stiffness,secant stiffness and bearing capacity of infilled frames. The displacement ductility coefficients of all the specimens are more than five,and the infilled frame using aerated concrete block shows better deformation performance than other infilled frames. Based on the test results and combining with the domestic and international leveling standards for the seismic performance of frames,the inter-story drift index limits for different seismic performance levels of masonry infilled frame are proposed.
Cyclic loading tests were carried out on four full-scale infilled RC frames and one bare RC frame to investigate the effects of different infilled masonry on the seismic behavior of RC frame structures. The infilling masonry included hollow clay bricks,hollow concrete blocks,light aggregate concrete blocks and aerated concrete blocks. The failure modes,hysteretic loops,skeleton curves,energy-dissipation capacity,and degradation of bearing capacity and stiffness of the specimens were comprehensively analyzed. Experimental results show that,the infilling wall using aerated concrete block shows good integrity during the whole loading process,whilst the other three infilling walls appear spalling under 1/50 drift angle,and the damage degree becomes more serious with the increase of drift amplitude. The infilling masonry greatly enhances the initial stiffness,secant stiffness and bearing capacity of infilled frames. The displacement ductility coefficients of all the specimens are more than five,and the infilled frame using aerated concrete block shows better deformation performance than other infilled frames. Based on the test results and combining with the domestic and international leveling standards for the seismic performance of frames,the inter-story drift index limits for different seismic performance levels of masonry infilled frame are proposed.
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 seismic behavior of infilled-frame structures[J].Journal of Earthquake Engineering and Engineering Vibration,2008,28(6):172-177.(in Chinese))
[2]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.汶川地震建筑震害分析[J].建筑结构学报,2008,29(4):1-9.(Civil and Structural Groups of Tsinghua University,Xinan Jiaotong University and Beijing Jiaotong University.Analysis on seismic damage of buildings in the Wenchuan earthquake[J].Journal of Building Structures,2008,29(4):1-9.(in Chinese))
[3]潘毅,季晨龙,王超,等.日本地震中钢筋混凝土框架结构震害及分析[J].工程抗震与加固改造,2012,34(4):122-127.(PAN Yi,JI Chenlong,WANG Chao,et al.Seidmic damage analysis of the reinforced concrete frame structures in Japanese earthquake[J].Earthquake Resistant Engineering and Retrofitting,2012,34(4):122-127.(in Chinese))
[4]童岳生,钱国芳.砖填充墙钢筋混凝土框架房屋实用抗震计算方法[J].建筑结构学报,1987,8(1):43-52.(TONG Yuesheng,QIAN Guofang.A practical earthquake resistant calculating method for building frames with masonry fillers walls[J].Journal of Building Structures,1987,8(1):43-52.(in Chinese))
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[6]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):47-54.(GUO Zixiong,HUANG Qunxian,WEI Rongfeng,et al.Experimental study on seismic behavior of RC frames infilled with masonry walls irregularly[J].China Civil Engineering Journal,2010,43(11):46-54.(in Chinese))
[7]MEHRABI A B,SHING P B.Finite element modeling of masonry-infilled reinforced concrete frames[J].Journal of Structural Engineering,1997,123(5):152-165.
[8]DAFNIS A,KOLSCH H,REIMERDES N.Arching in masonry walls subjected to earthquake motions[J].Journal of Structural Engineering,2002,128(12):153-159.
[9]黄群贤,郭子雄,朱雁茹,等.混凝土空心砌块填充墙RC框架抗震性能试验研究[J].建筑结构学报,2012,33(2):110-118.(HUANG Qunxian,GUO Zixiong,ZHU Yanru,et al.Experimental study on seismic behavior of RC frames infilled with concrete hollow blocks[J].Journal of Building Structures,2012,33(2):110-118.(in Chinese))
[10]HUANG Q,GUO Z,KUANG J S.Designing infilled reinforced concrete frames with the strong frame-weak infill principle[J].Engineering Structures,2016,123:341-353.
[11]门进杰,史庆轩,周琦.框架结构基于性能的抗震设防目标和性能指标的量化[J].土木工程学报,2008,41(9):76-82.(MEN Jinjie,SHI Qingxuan,ZHOU Qi.Performance-based seismic fortification criterion and quantified performance index for reinforced concrete frame structures[J].China Civil Engineering Journal,2008,41(9):76-82.(in Chinese))
[12]王树和,张举兵,王金龙,等.框架填充墙结构基于性能的抗震评估[J].北京科技大学学报,2014,36(4):562-568.(WANG Shuhe,ZHANG Jubing,WANG Jinlong,et al.Performance-based seismic evaluation of masonry-infilled frames[J].Journal of University of Science and Technology Beijing,2014,36(4):562-568.(in Chinese))
[13]FEMA 356.Pre-stadard and commentary for the seismic rehabilitation of building[R].Washington DC:Federal Emergency Menagement Agency,2000.
[14]周晓洁,李忠献,续丹丹,等.柔性连接填充墙框架结构抗震性能试验[J].天津大学学报(自然科学与工程技术版),2015,48(2):155-166.(ZHOU Xiaojie,LI Zhongxian,XU Dandan,et al.Experimental on seismic behavior of flexible connection masonry infilled frame structure[J].Journal of Tianjin University(Science and Technology),2015,48(2):155-166.(in Chinese))
[2]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.汶川地震建筑震害分析[J].建筑结构学报,2008,29(4):1-9.(Civil and Structural Groups of Tsinghua University,Xinan Jiaotong University and Beijing Jiaotong University.Analysis on seismic damage of buildings in the Wenchuan earthquake[J].Journal of Building Structures,2008,29(4):1-9.(in Chinese))
[3]潘毅,季晨龙,王超,等.日本地震中钢筋混凝土框架结构震害及分析[J].工程抗震与加固改造,2012,34(4):122-127.(PAN Yi,JI Chenlong,WANG Chao,et al.Seidmic damage analysis of the reinforced concrete frame structures in Japanese earthquake[J].Earthquake Resistant Engineering and Retrofitting,2012,34(4):122-127.(in Chinese))
[4]童岳生,钱国芳.砖填充墙钢筋混凝土框架房屋实用抗震计算方法[J].建筑结构学报,1987,8(1):43-52.(TONG Yuesheng,QIAN Guofang.A practical earthquake resistant calculating method for building frames with masonry fillers walls[J].Journal of Building Structures,1987,8(1):43-52.(in Chinese))
[5]史庆轩,童岳生,钱国芳.砖填充墙钢筋混凝土框架的地震反应分析[J].西安建筑科技大学学报(自然科学版),1996,28(4):423-427.(SHI Qingxuan,TONG Yuesheng,QIAN Guofang.Earthquake response analysis for reinforced concrete frames with masonry filler walls[J].Journal of Xi’an University of Architecture&Technology(Natural Science Edition),1996,28(4):423-427.(in Chinese))
[6]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):47-54.(GUO Zixiong,HUANG Qunxian,WEI Rongfeng,et al.Experimental study on seismic behavior of RC frames infilled with masonry walls irregularly[J].China Civil Engineering Journal,2010,43(11):46-54.(in Chinese))
[7]MEHRABI A B,SHING P B.Finite element modeling of masonry-infilled reinforced concrete frames[J].Journal of Structural Engineering,1997,123(5):152-165.
[8]DAFNIS A,KOLSCH H,REIMERDES N.Arching in masonry walls subjected to earthquake motions[J].Journal of Structural Engineering,2002,128(12):153-159.
[9]黄群贤,郭子雄,朱雁茹,等.混凝土空心砌块填充墙RC框架抗震性能试验研究[J].建筑结构学报,2012,33(2):110-118.(HUANG Qunxian,GUO Zixiong,ZHU Yanru,et al.Experimental study on seismic behavior of RC frames infilled with concrete hollow blocks[J].Journal of Building Structures,2012,33(2):110-118.(in Chinese))
[10]HUANG Q,GUO Z,KUANG J S.Designing infilled reinforced concrete frames with the strong frame-weak infill principle[J].Engineering Structures,2016,123:341-353.
[11]门进杰,史庆轩,周琦.框架结构基于性能的抗震设防目标和性能指标的量化[J].土木工程学报,2008,41(9):76-82.(MEN Jinjie,SHI Qingxuan,ZHOU Qi.Performance-based seismic fortification criterion and quantified performance index for reinforced concrete frame structures[J].China Civil Engineering Journal,2008,41(9):76-82.(in Chinese))
[12]王树和,张举兵,王金龙,等.框架填充墙结构基于性能的抗震评估[J].北京科技大学学报,2014,36(4):562-568.(WANG Shuhe,ZHANG Jubing,WANG Jinlong,et al.Performance-based seismic evaluation of masonry-infilled frames[J].Journal of University of Science and Technology Beijing,2014,36(4):562-568.(in Chinese))
[13]FEMA 356.Pre-stadard and commentary for the seismic rehabilitation of building[R].Washington DC:Federal Emergency Menagement Agency,2000.
[14]周晓洁,李忠献,续丹丹,等.柔性连接填充墙框架结构抗震性能试验[J].天津大学学报(自然科学与工程技术版),2015,48(2):155-166.(ZHOU Xiaojie,LI Zhongxian,XU Dandan,et al.Experimental on seismic behavior of flexible connection masonry infilled frame structure[J].Journal of Tianjin University(Science and Technology),2015,48(2):155-166.(in Chinese))