再生混凝土中高剪力墙的抗震性能研究
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摘要
为了研究不同的再生细骨料掺量、配筋率、轴压比剪力墙的抗震性能,该文进行了7个剪跨比为1.5的中高剪力墙低周反复荷载试验研究。在试验的基础上,分析了各剪力墙的承载力、延性、刚度、滞回特性、耗能及破坏特征。研究表明:再生细骨料掺量的增加,使再生混凝土中高剪力墙的抗震性能有所降低;配筋率的提高,使再生混凝土中高剪力墙的承载力、延性、耗能能力有所提高;轴压比的提高,使再生混凝土剪力墙的承载力提高,弹塑性变形能力降低。在一定条件下,再生混凝土可用于一些剪力墙结构工程。
In order to investigate the aseismic performance of the mid-rise recycled concrete shear wall with the different percent of fine aggregate replacement,reinforcement ratio and axial compression ratio,a low-frequency quasi-static cyclic loading experimental study on seven mid-rise shear walls with a shear-span ratio of 1.5 was carried out.Based upon the experimental study,the load-carrying capacity,ductility,stiffness,hysteretic behavior,energy dissipation and failure phenomena of each shear wall were analyzed.The experiments indicate that the more of the fine aggregate replacement,the poorer the aseismic performance of a recycled concrete shear wall,and the aseismic performance of a recycled aggregate concrete shear wall could be greatly improved by increasing the reinforcement ratio.With the increasing of the axial force ratio,the load-carrying capacity of the shear wall is increased but the ductility is decreased.At some conditions,the recycled aggregate concrete shear wall is able to satisfy the structure aseismic design requirement.
In order to investigate the aseismic performance of the mid-rise recycled concrete shear wall with the different percent of fine aggregate replacement,reinforcement ratio and axial compression ratio,a low-frequency quasi-static cyclic loading experimental study on seven mid-rise shear walls with a shear-span ratio of 1.5 was carried out.Based upon the experimental study,the load-carrying capacity,ductility,stiffness,hysteretic behavior,energy dissipation and failure phenomena of each shear wall were analyzed.The experiments indicate that the more of the fine aggregate replacement,the poorer the aseismic performance of a recycled concrete shear wall,and the aseismic performance of a recycled aggregate concrete shear wall could be greatly improved by increasing the reinforcement ratio.With the increasing of the axial force ratio,the load-carrying capacity of the shear wall is increased but the ductility is decreased.At some conditions,the recycled aggregate concrete shear wall is able to satisfy the structure aseismic design requirement.
引文
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[5]肖建庄,沈宏波,黄运标.再生混凝土柱受压性能试验[J].结构工程师,2006,22(6):73―77.Xiao Jianzhuang,Shen Hongbo,Huang Yunbiao.Test on compression performance of recycled concrete columns[J].Structural Engineers,2006,22(6):73―77.(in Chinese)
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[2]Belen Gonzalez-Fonteboa,Fernando Martinez-Abella.Shear strength of recycled concrete beams[J].Construction and Building Materials,2007,21(4):887―893.
[3]肖建庄,兰阳.再生粗骨料混凝土梁抗弯性能试验研究[J].特种结构,2006,23(1):9―12.Xiao Jianzhuang,Lan Yang.Preliminary study on mechanical properties and shear behaviour of recycled coarse aggregate concrete[J].Special Structures,2006,23(1):9―12.(in Chinese)
[4]肖建庄,兰阳.再生混凝土梁抗剪性能研究[J].结构工程师,2004,20(6):54―58,53.Xiao Jianzhuang,Lan Yang.Experimental study on shear behavior of recycled concrete beams[J].Structural Engineers,2004,20(6):54―58,53.(in Chinese)
[5]肖建庄,沈宏波,黄运标.再生混凝土柱受压性能试验[J].结构工程师,2006,22(6):73―77.Xiao Jianzhuang,Shen Hongbo,Huang Yunbiao.Test on compression performance of recycled concrete columns[J].Structural Engineers,2006,22(6):73―77.(in Chinese)
[6]肖建庄,朱晓晖.再生混凝土框架节点抗震性能研究[J].同济大学学报(自然科学版),2005,33(4):436―440.Xiao Jianzhuang,Zhu Xiaohui.Study on seismic behavior of recycled concrete frame joints[J].Journal of Tongji University(Natural Science),2005,33(4):436―440.(in Chinese)
[7]孙跃东,肖建庄,周德源,张鹏.再生混凝土框架抗震性能的试验研究[J].土木工程学报,2006,39(5):9―15.Sun Yuedong,Xiao Jianzhuang,Zhou Deyuan,Zhang Peng.An experimental study on the seismic behavior of recycled concrete frames[J].China Civil Engineering Journal,2006,39(5):9―15.(in Chinese)
[8]GB50010-2002,混凝土结构设计规范[S].北京:中国建筑工业出版社,2002.GB50010-2002,Code for design of concrete structures[S].Beijing:China Architecture Industry Press,2002.(in Chinese)
[9]GB50011-2001,建筑抗震设计规范[S].北京:中国建筑工业出版社,2001GB50011-2001,Code for seismic design of buildings[S].Beijing:China Architecture Industry Press,2001.(in Chinese)
[10]张建伟,杨兴民,曹万林,董宏英.单排配筋剪力墙结构抗震性能及设计研究[J].世界地震工程,2009,25(1):77―81.Zhang Jianwei,Yang Xingmin,Cao Wanlin,Dong Hongying.Experimental study on seismic performance of shear wall with single row of steel bars[J].World Earthquake Engineering,2009,25(1):77―81.(in Chinese)
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