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
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摘要
为了研究带竖向缝槽砌体填充墙对框架结构抗震性能的影响,开展了3榀带竖向缝槽砌体填充墙框架结构模型、1榀整体砌体填充墙框架结构模型和1榀纯框架结构模型在低周反复荷载作用下的对比试验。对比分析了各试件的破坏特征、滞回曲线、骨架曲线、位移延性、刚度退化、承载力退化和耗能性能等。结果表明:砌体填充墙的存在显著提高了框架结构的抗侧刚度和水平承载力,砌体填充墙参与了结构的滞回耗能,砌体填充墙框架的累积耗能能力明显优于纯框架;在填充墙与框架柱间设置一定宽度的竖向缝槽,减少了两者间的相互作用,延缓了填充墙和框架梁、柱的开裂,其水平承载力介于纯框架和整体填充墙框架之间,但其延性和耗能能力得到了较大的改善;在填充墙中设置一定宽度的竖向缝槽形成带竖向缝槽砌体填充墙框架,其水平承载力介于纯框架和整体填充墙框架水平承载力之间,其极限位移角与纯框架的基本相同,具有较好的延性和耗能能力。
In order to investigate the effects of slitted masonry in-fill walls on the seismic behavior of the reinforced concrete frame structure,comparison tests of three frame structures with slit masonry in-fill wall,one frame structures with masonry in-fill wall and one bare frame structure subjected to low cycle reversed load were carried out.The damage characteristics,load-displacement hysteretic curves,skeleton curves,displacement ductility,rigidity degradation,bearing capacity degradation and energy dissipation of specimens were analyzed.The test results show that the masonry in-fill wall enhances the lateral stiffness and bearing capacity of frame structures and contributes to the hysteretic energy of structure.The cumulative energy dissipation capacity of masonry in-fill wall frames is significantly better than that of bare frame.Due to the vertical slit with a certain width between the in-fill wall and the frame column,the wall-column interaction can be reduced,and the cracking load of in-fill walls and the beams,columns of main frame are increased.The horizontal bearing capacity of the specimens is between that of bare frame and that of whole in-fill wall frames,while the displacement ductility and energy dissipation capacity of specimens are greatly improved.The ultimate inter-story drift ratio of the specimen is basically the same that of the bare frame.The specimens have good ductility and energy dissipation capacity.
In order to investigate the effects of slitted masonry in-fill walls on the seismic behavior of the reinforced concrete frame structure,comparison tests of three frame structures with slit masonry in-fill wall,one frame structures with masonry in-fill wall and one bare frame structure subjected to low cycle reversed load were carried out.The damage characteristics,load-displacement hysteretic curves,skeleton curves,displacement ductility,rigidity degradation,bearing capacity degradation and energy dissipation of specimens were analyzed.The test results show that the masonry in-fill wall enhances the lateral stiffness and bearing capacity of frame structures and contributes to the hysteretic energy of structure.The cumulative energy dissipation capacity of masonry in-fill wall frames is significantly better than that of bare frame.Due to the vertical slit with a certain width between the in-fill wall and the frame column,the wall-column interaction can be reduced,and the cracking load of in-fill walls and the beams,columns of main frame are increased.The horizontal bearing capacity of the specimens is between that of bare frame and that of whole in-fill wall frames,while the displacement ductility and energy dissipation capacity of specimens are greatly improved.The ultimate inter-story drift ratio of the specimen is basically the same that of the bare frame.The specimens have good ductility and energy dissipation capacity.
引文
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[8]苑振芳,苑磊,刘斌.与框架柱脱开的砌体填充墙设计应用探讨[J].建筑结构,2010,40(5):112-116.(Yuan Zhenfang,Yuan Lei,Liu Bin.Discussion ondesign and application of masonry filled walls separatedfrom frame columns[J].Building structure,2010,40(5):112-116.(in Chinese))
[9]杨树标,刘建平,李荣华,等.柔性连接填充墙框架结构模型振动台试验研究[J].工业建筑,2008,38(增刊):268-271.(Yang Shubiao,Liu Jianping,LiRonghua,et al.Shaking table test of flexible connectionin-filled wall frame structure model[J].IndustrialConstruction,2008,38(suppl.):268-271.(inChinese))
[10]刘玉姝,李国强.带填充墙钢框架结构抗侧力性能试验及理论研究[J].建筑结构学报,2005,26(3):78-84.(LIU Yushu,LI Guoqiang.Experimental andtheoretical research on lateral load resistance of steelframes with in-filled walls[J].Journal of BuildingStructures,2005,26(3):78-84.(in Chinese))
[11]李社生.钢筋混凝土框架与填充墙之间的柔性连接[J].兰州工业高等专科学校学报,2003,10(3):53-56.(Li She-sheng.Flexible connecting betweenreinforced concrete frame and packed walls[J].Journalof Lanzhou Polytechnic College,2003,10(3):53-56.(in Chinese))
[12]谷野.框架、框剪结构中填充墙与主体结构的连接方法探讨[J].房材与应用,2005,33(3):6-7.(Gu Ye.Research on connected method between in-filled wallsand main structure in frame&frame-shear wallstructures[J].Housing Materials&Applications,2005,33(3):6-7.(in Chinese))
[2]肖从真.汶川地震震害调查与思考[J].建筑结构,2008,38(7):21-24.(Xiao Congzhen.Damageinvestigation and think of Wenchuan Earthquake[J].Building structure,2008,38(7):21-24.(in Chinese))
[3]刘利花.柔性连接砌体填充墙框架结构的抗震性能试验研究和非线型分析[D].苏州:苏州科技学院,2010:85.(Liu Lihua.Experimental study on seismicbehavior and nonlinear analysis of flexible connectioninfill wall frame structure[D].Suzhou:SuzhouUniversity of Science and Technology,2010:85.(inChinese))
[4]杨亮.砌体填充墙框架结构的抗震性能试验研究与非线性分析[D].苏州:苏州科技学院,2010:75.(Yang Liang.Experimental study on seismic behaviorand nonlinear analysis of masonry in-filled reinforcedconcrete frame structure[D].Suzhou:SuzhouUniversity of Science and Technology,2010:75.(inChinese))
[5]周振轶.多层砌体填充墙框架结构抗震性能试验研究和理论分析[D].苏州:苏州科技学院,2010:68.(Zhou Zhenyi.Experimental study on seismic behaviorand theoretical analysis of multi-storey reinforcedconcrete frame structure with masonry filler wall[D].Suzhou:Suzhou University of Science and Technology,2010:68.(in Chinese))
[6]田志昌,韩建忠,朱梅生.耗能框架填充墙的设计和实验[J].包头钢铁学院学报,1997,16(4):294-298.(Tian Zhichang,Han Jianzhong,Zhu Meisheng.Designand experiment of dissipative frame filled wall[J].Journal of Baotou University of Iron and SteelTechnology,1997,16(4):294-298.(in Chinese))
[7]程云,刘明,王长玉,刘晓伟.填充墙与柱脱开构造方式的平面外稳定研究[J].华中科技大学学报:城市科学版,2008,25(4):238-241.(Cheng Yun,LiuMing,Wang Changyu,Liu Xiaowei.Out-of-planestability test on disconnection of structure between infillwall and frame[J].Journal of Huazhong University ofScience and Technology:Urban Science,2008,25(4):238-241.(in Chinese))
[8]苑振芳,苑磊,刘斌.与框架柱脱开的砌体填充墙设计应用探讨[J].建筑结构,2010,40(5):112-116.(Yuan Zhenfang,Yuan Lei,Liu Bin.Discussion ondesign and application of masonry filled walls separatedfrom frame columns[J].Building structure,2010,40(5):112-116.(in Chinese))
[9]杨树标,刘建平,李荣华,等.柔性连接填充墙框架结构模型振动台试验研究[J].工业建筑,2008,38(增刊):268-271.(Yang Shubiao,Liu Jianping,LiRonghua,et al.Shaking table test of flexible connectionin-filled wall frame structure model[J].IndustrialConstruction,2008,38(suppl.):268-271.(inChinese))
[10]刘玉姝,李国强.带填充墙钢框架结构抗侧力性能试验及理论研究[J].建筑结构学报,2005,26(3):78-84.(LIU Yushu,LI Guoqiang.Experimental andtheoretical research on lateral load resistance of steelframes with in-filled walls[J].Journal of BuildingStructures,2005,26(3):78-84.(in Chinese))
[11]李社生.钢筋混凝土框架与填充墙之间的柔性连接[J].兰州工业高等专科学校学报,2003,10(3):53-56.(Li She-sheng.Flexible connecting betweenreinforced concrete frame and packed walls[J].Journalof Lanzhou Polytechnic College,2003,10(3):53-56.(in Chinese))
[12]谷野.框架、框剪结构中填充墙与主体结构的连接方法探讨[J].房材与应用,2005,33(3):6-7.(Gu Ye.Research on connected method between in-filled wallsand main structure in frame&frame-shear wallstructures[J].Housing Materials&Applications,2005,33(3):6-7.(in Chinese))
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