水平双向加载条件下钢筋混凝土核心筒抗震性能试验研究
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摘要
为了研究多维地震作用下钢筋混凝土核心筒结构的抗震性能,对2个尺寸配筋相同的钢筋混凝土核心筒试件分别进行了水平单向加载和水平双向加载条件下的拟静力试验。重点比较了双向加载对核心筒的破坏形态、破坏机理、承载能力、耗能能力、延性等方面的抗震性能的影响。结果表明:水平双向加载对核心筒抗震性能有显著影响,水平双向荷载作用使得核心筒的承载力较单向荷载作用明显下降,同时严重削弱了筒体变形和延性性能。初步研究结果显示仅考虑单向地震动作用分析混凝土核心筒结构的抗震能力可能严重偏于不安全,应引起学术和工程界的高度重视。
In order to study the seismic behavior of reinforced concrete core wall under multi-dimensional loading,two reinforced concrete core wall models were built and tested to failure.One wall model was under uniaxial cyclic lateral loading and the other was under biaxial cyclic lateral loading.This paper presents the results,including failure mode,hysteretic behavior,load-carrying capacity,ductility,energy dissipation ability.It can be seen that the biaxial cyclic lateral loading has important effect on the seismic behavior of reinforced concrete core wall.Under biaxial cyclic lateral loading,stiffness and load-carrying capacity of the specimen are decreased and the ductility performance is reduced markedly.
In order to study the seismic behavior of reinforced concrete core wall under multi-dimensional loading,two reinforced concrete core wall models were built and tested to failure.One wall model was under uniaxial cyclic lateral loading and the other was under biaxial cyclic lateral loading.This paper presents the results,including failure mode,hysteretic behavior,load-carrying capacity,ductility,energy dissipation ability.It can be seen that the biaxial cyclic lateral loading has important effect on the seismic behavior of reinforced concrete core wall.Under biaxial cyclic lateral loading,stiffness and load-carrying capacity of the specimen are decreased and the ductility performance is reduced markedly.
引文
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[8]贾鹏,杜修力,赵均.不同轴压比钢筋混凝土核心筒抗震性能[J].北京工业大学学报,2009,35(1):63-69.(JIA Peng,DU Xiuli,ZHAO Jun.Experimental study on seismic behavior of reinforcedconcrete core walls under different axial load ratio[J].Journal of Beijing University of Technology,2009,35(1):63-69.(in Chinese))
[9]杜修力,贾鹏,赵均.连梁刚度不同的混凝土核心筒抗震性能试验研究[J].北京工业大学学报,2010,36(8):1052-1058.(DU Xiuli,JIA Peng,ZHAOJun.Experimental study on seismic behavior ofreinforced concrete core walls with coupling beams ofdifferent stiffness[J].Journal of Beijing University ofTechnology,2010,36(8):1052-1058.(in Chinese))
[2]李宏男,王强,李兵,等.钢筋混凝土框架柱多维恢复力特性的试验研究[J].东南大学学报,2002,32(5):728-732.(LI Hongnan,WANG Qiang,LI Bing,et al.Experiments on characteristics of multi-dimensional restoring forces of reinforced concrete framecolumns[J].Journal of Southeast University,2002,32(5):728-732.(in Chinese))
[3]方鄂华,钱稼茹.我国高层建筑抗震设计的若干问题[J].土木工程学报,1999,32(1):3-8.(FangEhua,Qian Jiaru.Some issues of seismic resistantdesign for tall buildings in China[J].China CivilEngineering Journal,1999,32(1):3-8.(in Chinese))
[4]Habasaki A,Kitada Y,Nishikawa T,et al.Multi-directional loading test for RC seismic shear walls[C]//Proceedings of the 12th WCEE.Paper No.0454.Auckland,New Zealand:The New ZealandSociety for Earthquake Engineering,2000.
[5]Maruta M,Suzuki N,Miyashita T,et al.Structuralcapacities of h-shaped RC core wall subjected to lateralload and torsion[C]//Proceedings of the 12th WCEE.Paper No.1028.Auckland,New Zealand:The NewZealand Society for Earthquake Engineering,2000.
[6]曹万林,黄选明,卢智成,等.钢筋混凝土带暗支撑核心筒体抗震性能试验研究[J].地震工程与工程振动,2005,25(3):81-86.(CAO Wanlin,HUANGXuanming,LU Zhicheng,et al.Experimental study onseismic behavior of reinforced concrete core walls withconcealed bracings[J].Earthquake Engineering andEngineering Vibration,2005,25(3):81-86.(inChinese))
[7]吕西林,李俊兰.钢筋混凝土核心筒体抗震性能试验研究[J].地震工程与工程振动,2002,22(3):42-50.(LU Xilin,LI Junlan.Seismic behavior ofreinforced concrete core walls subjected to cyclicloading[J].Earthquake Engineering and EngineeringVibration,2002,22(3):42-50.(in Chinese))
[8]贾鹏,杜修力,赵均.不同轴压比钢筋混凝土核心筒抗震性能[J].北京工业大学学报,2009,35(1):63-69.(JIA Peng,DU Xiuli,ZHAO Jun.Experimental study on seismic behavior of reinforcedconcrete core walls under different axial load ratio[J].Journal of Beijing University of Technology,2009,35(1):63-69.(in Chinese))
[9]杜修力,贾鹏,赵均.连梁刚度不同的混凝土核心筒抗震性能试验研究[J].北京工业大学学报,2010,36(8):1052-1058.(DU Xiuli,JIA Peng,ZHAOJun.Experimental study on seismic behavior ofreinforced concrete core walls with coupling beams ofdifferent stiffness[J].Journal of Beijing University ofTechnology,2010,36(8):1052-1058.(in Chinese))
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