不同轴压比下再生混凝土高剪力墙试验研究
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摘要
为研究不同轴压比下再生混凝土高剪力墙的抗震性能,进行了3个不同轴压比、骨料取代率为100%的再生混凝土高剪力墙的低周反复荷载试验。在此基础上,分析了各剪力墙的破坏特征、承载力、延性和滞回特征。研究结果表明:轴压比对再生混凝土高墙的性能有重要影响,轴压力的增加可提高再生混凝土高剪力墙的承载力,但会降低再生混凝土剪力墙的延性和耗能能力;轴压比适中的再生混凝土高剪力墙,延性较好,滞回环稳定,有良好的耗能能力,破坏形式为弯曲破坏。在实际工程中,通过设定合理的轴压比限值,将再生混凝土高剪力墙应用于建筑结构中是可行的。
In order to study the seismic performance of recycled concrete high shear walls under different axial-load ratios,the low-cyclic loading tests were carried out for three recycled concrete high shear walls with the 100% replacement ratio of recycled coarse aggregate and three kinds of axial-load ratios.Based on the experiments,the failure characteristics,bearing capacity,ductility and the hysteresis properties of shear walls were analyzed.The results show that the axial-load ratio has important influence on the performance of recycled concrete high shear walls.The bearing capacity of recycled concrete high shear walls increases with the increase of the axial-load ratio,however,the ductility and energy dissipation decrease.The recycled concrete high shear walls with rational axial-load ratio have stable hysteresis loop,good ductility and energy dissipation,and the failure modes are the bending failure.In practice,it is feasible that the recycled concrete high shear walls are applied to building structures through setting rational value of the axial-load ratio.
In order to study the seismic performance of recycled concrete high shear walls under different axial-load ratios,the low-cyclic loading tests were carried out for three recycled concrete high shear walls with the 100% replacement ratio of recycled coarse aggregate and three kinds of axial-load ratios.Based on the experiments,the failure characteristics,bearing capacity,ductility and the hysteresis properties of shear walls were analyzed.The results show that the axial-load ratio has important influence on the performance of recycled concrete high shear walls.The bearing capacity of recycled concrete high shear walls increases with the increase of the axial-load ratio,however,the ductility and energy dissipation decrease.The recycled concrete high shear walls with rational axial-load ratio have stable hysteresis loop,good ductility and energy dissipation,and the failure modes are the bending failure.In practice,it is feasible that the recycled concrete high shear walls are applied to building structures through setting rational value of the axial-load ratio.
引文
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[9]李兵,李宏男,曹敬党.钢筋混凝土高剪力墙拟静力试验研究[J].沈阳建筑大学学报,2009,25(2):230-234.
[2]BAIRAGI N K,RAVANDE K.Behavior of concrete withdifferent proportions of natural and recycled aggregate[J].Resource,Conservation and Recycling,1993,9(3):109-126.
[3]白文辉,王柏生.再生粗骨料混凝土梁受弯计算适用性研究[J].建筑结构,2009,39(8):52-55.
[4]合肥工业大学,合肥市重点工程建设管理局.城市道路水泥混凝土路面再生利用技术的研究报告[R].合肥:2008.
[5]柳炳康,陈丽华,周安,等.再生混凝土框架梁柱中节点抗震性能试验研究[J].建筑结构学报,2011,32(11):109-115.
[6]GB50010—2010混凝土结构设计规范[S].北京:中国建筑工业出版社,2011.
[7]程文瀼,颜德姮.混凝土结构[M].北京:中国建筑工业出版,2005.
[8]曹万林,徐泰光,刘强,等.再生混凝土高剪力墙抗震性能试验研究[J].世界地震工程,2009,25(2):18-23.
[9]李兵,李宏男,曹敬党.钢筋混凝土高剪力墙拟静力试验研究[J].沈阳建筑大学学报,2009,25(2):230-234.
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