低周反复扭矩下再生混凝土受扭构件抗震性能试验研究
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摘要
通过对两根再生混凝土试件(再生骨料替代率为100%)在低周反复纯扭荷载作用下的抗震性能试验,对再生混凝土纯扭试件的破坏形态、滞回曲线、骨架曲线、延性、耗能能力等进行了分析。研究表明,再生混凝土受扭试件在低周反复扭矩作用下滞回环呈反S形,延性系数在3.67～4.14之间,具有良好的抗震性能。结合混凝土结构设计规范推导了抗扭承载力的计算公式,其计算值与试验值符合较好,具有一定的参考价值。
A study is conducted on the seismic behavior of two recycled concrete members with 100% recycled coarse aggregate under the low frequency reversed torsion.The seismic behavior of recycled concrete members such as failure features,hysteresis loops,ductility,degeneration of strength and stiffness and energy dissipation under seismic loads are investigated.The test and analyses show that the recycled concrete member can be used to structures because of its good seismic behavior.The formula for calculating the torsional capacity of members made of recycled aggregate concrete is proposed.The predictions of the formula agree well with the experimental results.
A study is conducted on the seismic behavior of two recycled concrete members with 100% recycled coarse aggregate under the low frequency reversed torsion.The seismic behavior of recycled concrete members such as failure features,hysteresis loops,ductility,degeneration of strength and stiffness and energy dissipation under seismic loads are investigated.The test and analyses show that the recycled concrete member can be used to structures because of its good seismic behavior.The formula for calculating the torsional capacity of members made of recycled aggregate concrete is proposed.The predictions of the formula agree well with the experimental results.
引文
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[5]杨曦,吴瑾,梁继光.再生混凝土抗拉强度与抗压强度关系的试验研究[J].四川建筑科学研究,2009,35(5):190-192.YANG Xi,WU Jin,LIANG Jiguang.Experimental study on relationship between tensile strength and compressive strength of recycled aggregate con-crete[J].Sichuan Building Science,2009,35(5):190-19.(in Chinese)
[6]李志军,史庆轩,刘金涛.低周反复扭矩下钢筋混凝土复合受扭构件的受扭性能研究[J].西安工业大学学报,2006,26(6):582-586.LI Zhijun,SHI Qingxuan,LIU Jintao.Study on torsional behavior of R.C.members with box sections subjected to biaxially eccentric compressionand biaxial shear under reversed torsion[J].Journal of Xi’an Technological University,2006,26(6):582-586.(in Chinese)
[2]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].地震工程与工程振动,2011,31(1):61-66.BAI Guoliang.LIU Chao,ZHAO Hongjin,et al.Experimental research on seismic behavior of recycled concrete frame columns[J].Jouranl of Earth-quake Enginerring and Engineering Vibration,2011,31(1):61-66.(in Chinese)
[3]GB50010-2010混凝土结构设计规范[S].北京:中国建筑工业出版社,2010.
[4]刘数华,饶美娟.再生骨料混凝土变形性能和耐久性能研究综述[J].公路,2009,10(10):181-184.LIU Shuhua,RAO Meijuan.Summarization of study on deformation properties and durability of RAC[J].Highway,2009,10(10):181-184.(inChinese)
[5]杨曦,吴瑾,梁继光.再生混凝土抗拉强度与抗压强度关系的试验研究[J].四川建筑科学研究,2009,35(5):190-192.YANG Xi,WU Jin,LIANG Jiguang.Experimental study on relationship between tensile strength and compressive strength of recycled aggregate con-crete[J].Sichuan Building Science,2009,35(5):190-19.(in Chinese)
[6]李志军,史庆轩,刘金涛.低周反复扭矩下钢筋混凝土复合受扭构件的受扭性能研究[J].西安工业大学学报,2006,26(6):582-586.LI Zhijun,SHI Qingxuan,LIU Jintao.Study on torsional behavior of R.C.members with box sections subjected to biaxially eccentric compressionand biaxial shear under reversed torsion[J].Journal of Xi’an Technological University,2006,26(6):582-586.(in Chinese)
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