低周往复荷载作用下生态复合墙体抗震性能研究
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摘要
通过对2榀1/2比例生态复合墙体(施工工艺:装配式、现砌式)模型在水平低周反复荷载作用下的抗震性能试验,研究复合墙体在低周反复荷载作用下的受力特点和破坏机制,对比分析其承载力、滞回特性、延性、刚度退化、耗能等抗震性能。试验结果表明:不同施工工艺下生态复合墙体破坏模式均为"砌块—(框格)—边框",实现结构具有多道抗震防线的设计概念;2榀墙体从屈服到破坏,等效黏滞阻尼系数均有较明显的增大,都具有较强的耗能能力。抗倒塌能力较强,可根据不同地区差异选取适当的工艺来满足实际应用的需求。
This paper studies the seismic behavior of two ecological composite walls,the scales of which are 1∶ 2.A comparative study is conducted under lowly reversed cyclic lateral loading.Emphasis is put on the evaluation of the failure mechanism,bearing capacity,hysteretic loops,ductility,deterioration of strength and stiffness of ecological composite walls under seismic loads.The experiment results show that the failure modes of ecological composite walls with different construction technology are blocks-ribbed grids-end frames.This indicates that the ecological composite wall has several seismic defending lines.The equivalent viscous damping coefficients of four walls all have been obviously increased from yielding stage to failure stage,and these have great energy dissipation capacity and strong collapse resistant capacity.Based on regional difference,the appropriate technique can be selected for practical engineering.
This paper studies the seismic behavior of two ecological composite walls,the scales of which are 1∶ 2.A comparative study is conducted under lowly reversed cyclic lateral loading.Emphasis is put on the evaluation of the failure mechanism,bearing capacity,hysteretic loops,ductility,deterioration of strength and stiffness of ecological composite walls under seismic loads.The experiment results show that the failure modes of ecological composite walls with different construction technology are blocks-ribbed grids-end frames.This indicates that the ecological composite wall has several seismic defending lines.The equivalent viscous damping coefficients of four walls all have been obviously increased from yielding stage to failure stage,and these have great energy dissipation capacity and strong collapse resistant capacity.Based on regional difference,the appropriate technique can be selected for practical engineering.
引文
[1]黄炜,陈国新,姚谦峰.密肋复合墙体在拟动力试验下的抗震性能研究[J].振动与冲击,2007,26(3):49-55.HUANG Wei,CHEN Guoxin,YAO Qianfeng.Study on aseismic performance of a multiribbed composite wall under pseudo-dynamic test[J].Journal of Vibration and Shock,2007,26(3):49-55.(in Chinese)
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[8]郭俊杰.足尺混凝土小型空心砌块墙体抗震性能试验研究[D].北京:清华大学,2005:30-100.GUO Junjie.Experimental research on seismic behavior of small-sized hollow concrete block full-sized wall[D].Beijing:Tsinghua University,2005:30-100.(in Chinese)
[9]朱伯龙.结构抗震试验[M].北京:地震出版社,1989.ZHU Bolong.Structures earthquake resisting test[D].Beijing:Earthquake Press,1989.(in Chinese)
[10]Salonikios T N,Kappos A J,Tegos I A.Cyclic loadbehavior of low-slenderness reinforced concrete walls:Failure modes.Strength and deformation a-nalysis,and design implication[J].ACI Structure Journal,2000,97(1):132-141.
[11]Christian Greifenhagen,Pierino Lestuzzi.Static cyclic tests on lightly reinforced concrete shear walls[J].Engineering Structures,2005,27(11):1703-1712.
[2]姚谦峰,黄炜,田杰,等.密肋复合墙体受力机理及抗震性能试验研究[J].建筑结构学报,2004,(6):67-74.YAO Qianfeng,HUANG Wei,TIAN Jie,et al.Experimental analyses of mechanical characteristics and seismic performance of multiribbed panelwall[J].Journal of Building Structures,2004,25(6):67-74.(in Chinese)
[3]Liu P,Yao Q F.Dynamic reliability of structures:the example of multi-grid composite walls[J].Structural Engineering and Mechanics,2010,36(4):463-479.
[4]Zhang Chenghua,Huang Wei,Zhao Dong,et al.The rigid frame-whole bracing model of eco-composotie wall structure[J].Advanced MaterialsResearch,2012,368-373:197-200.
[5]白国良,刘超,赵洪金,等.再生混凝土框架柱抗震性能试验研究[J].地震工程与工程震动,2011,31(2):61-66.BAI Guoliang,LIU Chao,ZHAO Hongjin,et al.Experimental research on seismic behavior of recycled concrete frame columns[J].Journal ofEarthquake Engineering and Engineering Vibration,2011,31(2):61-66.(in Chinese)
[6]周静海,王鹏里,孟宪宏,等.小剪跨比格构式混凝土墙体抗震性能试验[J].地震工程与工程震动,2011,31(3):127-132.ZHOU Jinghai,WANG Pengli,MENG Xianhong,et al.Experimental study on seismic behavior of concrete grillage walls with different shear spanratio[J].Journal of Earthquake Engineering and Engineering Vibration,2011,31(3):127-132.(in Chinese)
[7]肖建庄,黄江德,姚燕.再生混凝土砌块墙体抗震性能试验研究[J].建筑结构学报,2012(2):100-109.XIAO Jian zhuang,HUANG Jiang de,YAO Yan.Test on seismic behavior of recycled concrete block walls[J].Journal of Building Structures,2012(2):100-109.(in Chinese)
[8]郭俊杰.足尺混凝土小型空心砌块墙体抗震性能试验研究[D].北京:清华大学,2005:30-100.GUO Junjie.Experimental research on seismic behavior of small-sized hollow concrete block full-sized wall[D].Beijing:Tsinghua University,2005:30-100.(in Chinese)
[9]朱伯龙.结构抗震试验[M].北京:地震出版社,1989.ZHU Bolong.Structures earthquake resisting test[D].Beijing:Earthquake Press,1989.(in Chinese)
[10]Salonikios T N,Kappos A J,Tegos I A.Cyclic loadbehavior of low-slenderness reinforced concrete walls:Failure modes.Strength and deformation a-nalysis,and design implication[J].ACI Structure Journal,2000,97(1):132-141.
[11]Christian Greifenhagen,Pierino Lestuzzi.Static cyclic tests on lightly reinforced concrete shear walls[J].Engineering Structures,2005,27(11):1703-1712.
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