锈蚀RC框架柱恢复力模型研究
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摘要
通过对大量锈蚀RC框架柱抗震性能试验资料的统计分析,研究了锈蚀对RC柱骨架线影响的规律.采用三折线骨架曲线,并且给出特征点的计算方法;考虑往复荷载作用下强度退化及刚度退化效应,基于能量耗散原理,定义了退化指数,最终建立了能够反映强度和刚度退化的锈蚀RC柱恢复力模型.经验证表明:该模型能够较好地反映锈蚀RC柱的滞回特性,符合试验结果.
The effect of the reinforcement corrosion on the backbone curve of the RC column was investigated based on the regression analysis of a large test samples.The parameters on tri-linear backbone curve were given,considering strength and stiffness degradation,and defined the degradation index based on energy dissipation;the restoring model of corroded RC column was established at last.The model can well reflect the hysteretic properties of corroded RC columns by comparing the theory and test value.
The effect of the reinforcement corrosion on the backbone curve of the RC column was investigated based on the regression analysis of a large test samples.The parameters on tri-linear backbone curve were given,considering strength and stiffness degradation,and defined the degradation index based on energy dissipation;the restoring model of corroded RC column was established at last.The model can well reflect the hysteretic properties of corroded RC columns by comparing the theory and test value.
引文
[1]史庆轩,牛荻涛,颜桂云.反复荷载作用下锈蚀混凝土压弯构件恢复力性能的试验研究[J].地震工程与工程振动,2000,20(4):44-50.
[2]牛荻涛,陈新孝,王学民.锈蚀钢筋混凝土压弯构件抗震性能试验研究[J].建筑结构,2004,34(10):36-45.
[3]贡金鑫,仲伟秋,赵国藩.受腐蚀钢筋混凝土偏心受压构件低周反复性能的试验研究[J].建筑结构学报,2004,25(5):92-104.
[4]蒋连接,袁迎曙.锈蚀钢筋混凝土压弯构件的恢复力模型[J].混凝土,2011(6):29-40.
[5]贡金鑫,李金波,赵国藩.受腐蚀钢筋混凝土构件的恢复力模型[J].土木工程学报,2005,38(11):38-44.
[6]陈新孝,牛荻涛,王学民.锈蚀混凝土压弯构件的恢复力模型[J].西安建筑科技大学学报,2005,37(2):155-159.
[7]欧进萍,何政,吴斌等.钢筋混凝土结构基于地震损伤性能的设计[J].地震工程与工程振动,1999,19(1):21-30.
[8]Rahnama M,Krawinkler H.Effects of soft soil and hysteresis model on seismic demands[R].Stanford:Blume Earthquake En-gineering Center,1993.
[9]Ibarra L F,Medina R A,Krawinkler H.Hysteretic model models that incorporate strength and stiffness deterioration[J].Earth-quake Engineering Structural Dynamics,2005,34(12):1 489-1 511.
[10]王斌,郑山锁,国贤发,等.考虑损伤效应的型钢高强高性能混凝土框架柱恢复力模型研究[J].建筑结构学报,2012,33(6):69-76.
[2]牛荻涛,陈新孝,王学民.锈蚀钢筋混凝土压弯构件抗震性能试验研究[J].建筑结构,2004,34(10):36-45.
[3]贡金鑫,仲伟秋,赵国藩.受腐蚀钢筋混凝土偏心受压构件低周反复性能的试验研究[J].建筑结构学报,2004,25(5):92-104.
[4]蒋连接,袁迎曙.锈蚀钢筋混凝土压弯构件的恢复力模型[J].混凝土,2011(6):29-40.
[5]贡金鑫,李金波,赵国藩.受腐蚀钢筋混凝土构件的恢复力模型[J].土木工程学报,2005,38(11):38-44.
[6]陈新孝,牛荻涛,王学民.锈蚀混凝土压弯构件的恢复力模型[J].西安建筑科技大学学报,2005,37(2):155-159.
[7]欧进萍,何政,吴斌等.钢筋混凝土结构基于地震损伤性能的设计[J].地震工程与工程振动,1999,19(1):21-30.
[8]Rahnama M,Krawinkler H.Effects of soft soil and hysteresis model on seismic demands[R].Stanford:Blume Earthquake En-gineering Center,1993.
[9]Ibarra L F,Medina R A,Krawinkler H.Hysteretic model models that incorporate strength and stiffness deterioration[J].Earth-quake Engineering Structural Dynamics,2005,34(12):1 489-1 511.
[10]王斌,郑山锁,国贤发,等.考虑损伤效应的型钢高强高性能混凝土框架柱恢复力模型研究[J].建筑结构学报,2012,33(6):69-76.
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