框架-密肋复合墙体抗震性能试验研究
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摘要
框架-密肋复合墙结构是由框架与框架-密肋复合墙体组成的一种新型双重抗侧力结构。利用试验方法对该结构体系主要受力构件——框架-密肋复合墙体的抗震性能开展研究。在已有相关研究工作基础上,对1/2比例RC框架-井字形复合墙体、SRC框架-井字形复合墙体和空框格框架进行低周反复荷载试验,分析框架-复合墙体的破坏过程和滞回曲线特点,研究墙体的承载力、刚度、延性及耗能能力等,并与已有框架-十字形复合墙体等试验结果进行对比。试验结果表明:框架-密肋复合墙体具有较好的协同工作性能与双重受力特点,其受剪承载力、刚度、耗能性能均明显优于普通框架及填充墙框架,内部密肋复合墙板始终有效分担外荷载,墙体在后期大位移循环阶段的延性和承载力较好,具有良好的抗震性能。
The frame-multi-grid composite wall structure is a dual lateral force resisting structural system which consists of frames and frame-composite walls.In this research,the seismic performance of the frame-composite wall,which is the main bearing member in the structure,was studied by model test.Based on some previously relevant research,cyclic reversed loading tests were conducted on RC frame-composite wall,SRC frame-composite wall and multi-grid open-web frame of 1/2 scale.Failure process and hysteretic curve characteristic of the specimens were analyzed.Seismic performance including bearing capacity,stiffness,ductility and energy-dissipating capability were investigated.And the experimental results of the walls were compared with those of the existing walls.The test results indicate that the frame-composite wall has good interaction and dual lateral force resisting features.The shear strength,stiffness and energy-dissipating capability of the frame-composite wall are significantly higher than those of the traditional frame or frame with infilled masonry wall.The inner composite wall can share external load effectively during loading process.It also has good ductility and bearing capacity,and can play an important role in dissipating energy during large displacement cycles.
The frame-multi-grid composite wall structure is a dual lateral force resisting structural system which consists of frames and frame-composite walls.In this research,the seismic performance of the frame-composite wall,which is the main bearing member in the structure,was studied by model test.Based on some previously relevant research,cyclic reversed loading tests were conducted on RC frame-composite wall,SRC frame-composite wall and multi-grid open-web frame of 1/2 scale.Failure process and hysteretic curve characteristic of the specimens were analyzed.Seismic performance including bearing capacity,stiffness,ductility and energy-dissipating capability were investigated.And the experimental results of the walls were compared with those of the existing walls.The test results indicate that the frame-composite wall has good interaction and dual lateral force resisting features.The shear strength,stiffness and energy-dissipating capability of the frame-composite wall are significantly higher than those of the traditional frame or frame with infilled masonry wall.The inner composite wall can share external load effectively during loading process.It also has good ductility and bearing capacity,and can play an important role in dissipating energy during large displacement cycles.
引文
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[2]Xia Lei,Yao Qianfeng,Chang Peng,et al.Seismicsafety evaluation analysis of a new building structurewith multi-ribbed composite wall structure[C]//Proceedings of International Conference on EarthquakeEngineering:The First Anniversary of WenchuanEarthquake.Chengdu:Southwest Jiaotong UniversityPress,2009:325-328.
[3]Liu P,Yao Q F.Dynamic reliability of structures:theexample of multi-grid composite walls[J].StructuralEngineering and Mechanics,2010,36(4):463-479.
[4]傅秀岱,马峰,杨永哲.新型钢筋混凝土复合剪力墙抗震性能试验研究[J].天津大学学报,2000,33(3):336-340.(Fu Xiudai,Ma Feng,Yang Yongzhe.Experimental study of lattice composing shear walls onseismic performance[J].Journal of Tianjin University,2000,33(3):336-340.(in Chinese))
[5]冯颖慧.一种新型复合剪力墙抗震试验研究[D].天津:天津大学,1999.(Feng Yinghui.Aseismaticperformance experimental study of a newtype compositeshear-wall[D].Tianjin:Tianjin University,1999.(inChinese))
[6]GB 50011—2001建筑结构抗震设计规范[S].(GB50011—2001 Code for seismic design of buildings[S].(in Chinese))
[7]胡志远.采用端部约束的配筋砌块砌体剪力墙抗震性能试验研究[D].哈尔滨:哈尔滨工业大学,2006.(Hu Zhiyuan.Experimental study on the seismicbehavior of reinforced concrete masonry shear walls withend restraint[D].Harbin:Harbin Institute ofTechnology,2006.(in Chinese))
[8]过镇海,时旭东.钢筋混凝土原理和分析[M].北京:清华大学出版社,2003.(Guo Zhenhai,ShiXudong.Reinforced concrete theory and analyze[M].Beijing:Tsinghua University Press,2003.(inChinese))
[9]童岳生,钱国芳.砖填充墙钢筋混凝土框架在水平荷载作用下结构性能的试验研究[J].西安建筑科技大学学报,1982,14(2):1-13.(Tong Yuesheng,Qian Guofang.Structure performance experimentalstudy of RC frame with masonry filler walls underhorizontal loads[J].Journal of Xi’an University ofArchitecture&Technology,1982,14(2):1-13.(inChinese))
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