不同轴压比再生混凝土框架柱抗震性能试验研究
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摘要
文章通过对5个粗骨料取代率为100%再生混凝土框架柱低周反复荷载下的抗震性能试验,研究各试件的破坏形式、滞回特性、延性性能、承载能力,分析轴压比对试件的抗震性能的影响。结果表明:在剪跨比、配箍率、混凝土强度都一致的条件下,随着轴压比的增加,试件的滞回曲线越来越扁平,耗能能力、延性及极限承载力不断下降。再生混凝土框架柱抗震性能的变化规律与普通混凝土柱基本相似,略低于普通混凝土柱构件,因而可以确定再生混凝土框架柱适用于低轴压结构。
Based on the experimental study of five concrete frame columns with 100% replacement ratio of recycled coarse aggregates under the low cyclic loading test,the failure shapes,hysteretic characteristics,ductility factors,load carrying capacity and the relative effects from the variation of axial compression ratios on the seismic behavior of the columns were discussed separately.The testing results indicated that the hysteretic curves became flat step by step and the energy dissipation capacity,ductility and ultimate bearing capacity gradually dropped down with the increase of axial compression ratios at the specified condition of the same shear span,stirrup reinforcement ratio and concrete strength.Basically,the seismic behavior of recycled concrete frame columns are similar to or a little worse than those of the normal reinforced concrete columns,indicating that the recycled concrete can be applied to the concrete columns structures with special low axial compression ratio.
Based on the experimental study of five concrete frame columns with 100% replacement ratio of recycled coarse aggregates under the low cyclic loading test,the failure shapes,hysteretic characteristics,ductility factors,load carrying capacity and the relative effects from the variation of axial compression ratios on the seismic behavior of the columns were discussed separately.The testing results indicated that the hysteretic curves became flat step by step and the energy dissipation capacity,ductility and ultimate bearing capacity gradually dropped down with the increase of axial compression ratios at the specified condition of the same shear span,stirrup reinforcement ratio and concrete strength.Basically,the seismic behavior of recycled concrete frame columns are similar to or a little worse than those of the normal reinforced concrete columns,indicating that the recycled concrete can be applied to the concrete columns structures with special low axial compression ratio.
引文
[1]肖建庄.再生混凝土[M].北京:中国建筑工业出版社,2008:147-152.
[2]O’Mahony M M.An analysis of the shear strength of recy-cled aggregates[J].Journal of Materials and Structures,1997,30:599-606.
[3]Corinaldesi V.Recycled aggregate concrete under cyclicloading[C]//Proceedings of the International Symposiumon Role of Concrete in Sustainable Development,2003:509-518.
[4]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.
[5]孙跃东,周德源,肖建庄,等.不同轴力下再生混凝土框架抗震性能的试验[J].同济大学学报:自然科学版,2007,35(8):1013-1018.
[6]胡波,柳炳康,张李黎.再生混凝土氯离子渗透性能测试与分析[J].合肥工业大学学报:自然科学版,2009,32(8):1240-1243.
[7]JGJ101-96,建筑抗震试验方法规程[S].
[8]肖建庄,李杰.钢筋混凝土框架柱轴压比限值问题研究[J].世界地震工程,1998,14(4):17-22.
[9]郭子雄,吕西林.高轴压比框架柱抗震性能试验研究[J].华侨大学学报:自然科学版,1999,20(3):258-263.
[10]张国军,吕西林,刘伯权.钢筋混凝土框架柱在轴压比超限时抗震性能的研究[J].土木工程学报,2006,39(3):47-54.
[2]O’Mahony M M.An analysis of the shear strength of recy-cled aggregates[J].Journal of Materials and Structures,1997,30:599-606.
[3]Corinaldesi V.Recycled aggregate concrete under cyclicloading[C]//Proceedings of the International Symposiumon Role of Concrete in Sustainable Development,2003:509-518.
[4]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.
[5]孙跃东,周德源,肖建庄,等.不同轴力下再生混凝土框架抗震性能的试验[J].同济大学学报:自然科学版,2007,35(8):1013-1018.
[6]胡波,柳炳康,张李黎.再生混凝土氯离子渗透性能测试与分析[J].合肥工业大学学报:自然科学版,2009,32(8):1240-1243.
[7]JGJ101-96,建筑抗震试验方法规程[S].
[8]肖建庄,李杰.钢筋混凝土框架柱轴压比限值问题研究[J].世界地震工程,1998,14(4):17-22.
[9]郭子雄,吕西林.高轴压比框架柱抗震性能试验研究[J].华侨大学学报:自然科学版,1999,20(3):258-263.
[10]张国军,吕西林,刘伯权.钢筋混凝土框架柱在轴压比超限时抗震性能的研究[J].土木工程学报,2006,39(3):47-54.
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