反复荷载作用下L形钢管混凝土柱滞回性能研究
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摘要
本文介绍了7根L形钢管混凝土柱试件在承受常轴力和水平荷载作用下的试验研究。试验中考虑了不同的轴压比、内部有无加劲和加载方式对试件抗震性能的影响,试验结果表明,内部加劲能够明显地延缓柱子钢板的屈服,而且柱子的耗能能力和延性也有较好的改善。最后通过编写计算程序,对L形钢管混凝土柱的荷载-变形进行了全过程分析,考察了常用的方钢管混凝土柱的钢材和混凝土的本构关系对L形钢管混凝土柱纤维模型数值分析的适用性,计算得到的弯矩-轴力-曲率关系和荷载-位移关系与试验结果吻合较好。
An experimental investigation on hysteretic behavior of seven concrete-filled L-section steel column specimens subjected to lateral load and constant axial load is introduced. The effects of different axial compression force ratios, inner stiffeners, and way of loading have been studied. The results show that the inner stiffeners can obviously postpone the buckling of steel plate, and improve energy dissipation and ductility behaviors of the members. Furthermore, in order to test the feasibility of numerical method and select appropriate constitutive relations of steel and concrete, the numerical method is adopted to analyze the load-displace behavior. The results obtained by the calculation are in good agreement with that obtained by experiments.
An experimental investigation on hysteretic behavior of seven concrete-filled L-section steel column specimens subjected to lateral load and constant axial load is introduced. The effects of different axial compression force ratios, inner stiffeners, and way of loading have been studied. The results show that the inner stiffeners can obviously postpone the buckling of steel plate, and improve energy dissipation and ductility behaviors of the members. Furthermore, in order to test the feasibility of numerical method and select appropriate constitutive relations of steel and concrete, the numerical method is adopted to analyze the load-displace behavior. The results obtained by the calculation are in good agreement with that obtained by experiments.
引文
[1]黎志军,蔡健,谭哲东,陈德明.带约束拉杆异形钢管混凝土柱力学性能的试验研究[J].工程力学(增刊),2001:124-129.
[2]张正国.方钢管混凝土偏压短柱基本性能研究[J].建筑结构学报,1989,12(6):10-20.
[3]王丹.T形、L形钢管混凝土柱抗震性能研究[D].博士后研究工作报告.同济大学,2005.
[4]吕西林,陆伟东.反复荷载作用下方钢管混凝土柱的抗震性能研究[J].建筑结构学报,2000,21(2):2-11.
[5]杨有福,韩林海,范喜哲.钢管混凝土动力性能研究现状[J].哈尔滨建筑大学学报,2000,33(5):40-46.
[6]陶忠,韩林海.方钢混凝土压弯构件滞回性能的试验研究[J].地震工程与工程振动,2001,21(1):74-78.
[7]GE Hanbin,USAMI Tsutomu:Cyclic tests of concrete-filled steel box columns[J].Journal of Structural Engineering,1996,122(10):1169-1177.
[2]张正国.方钢管混凝土偏压短柱基本性能研究[J].建筑结构学报,1989,12(6):10-20.
[3]王丹.T形、L形钢管混凝土柱抗震性能研究[D].博士后研究工作报告.同济大学,2005.
[4]吕西林,陆伟东.反复荷载作用下方钢管混凝土柱的抗震性能研究[J].建筑结构学报,2000,21(2):2-11.
[5]杨有福,韩林海,范喜哲.钢管混凝土动力性能研究现状[J].哈尔滨建筑大学学报,2000,33(5):40-46.
[6]陶忠,韩林海.方钢混凝土压弯构件滞回性能的试验研究[J].地震工程与工程振动,2001,21(1):74-78.
[7]GE Hanbin,USAMI Tsutomu:Cyclic tests of concrete-filled steel box columns[J].Journal of Structural Engineering,1996,122(10):1169-1177.
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