STUDY ON BEHAVIOR OF RC COLUMNS SUBJECTED TO EARTHQUAKE
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摘要: 采用多弹簧模型对钢筋混凝土柱在水平反复荷载作用下的受力过程进行了数值模拟。数值模拟结果与试验结果对比表明，所建多弹簧计算模型较好地反映了钢筋混凝土柱的受力性能。针对目前钢筋混凝土柱试验研究的不足，选取轴压比、加载路径、加载幅值、荷载循环次数、变轴力等进行参数研究。研究发现：地震作用下大轴压比柱延性较小，对抗震不利；双向加载时，随两方向幅值比减小，矩形和菱形加载路径下柱的延性显著减小；加载幅值增量及荷载循环次数的变化对柱骨架曲线形状影响不明显；变轴力加载下柱的滞回性能表现出明显的不对称性，但柱滞回耗能和极限位移与定轴力加载情况基本一致。Abstract: Based on the multi-spring model, numerical simulation calculations for RC columns under reversed loading were carried out. The applied analytical model was verified by comparing the numerical results with the test data. In allusion to the deficiency in test, the parameter study was performed including the axial load ratio, loading path, loading amplitude, loading cycle number as well as variable axial forces. It is shown that the ductility of the columns with a large axial load ratio is significantly reduced. The ductility of columns under rectangular and diamond loading paths decreases rapidly as the amplitude ratio between two loading directions decreases. Varying the amplitude increment and the loading cycle number has little effect on the figures of skeleton curves. It is also shown that RC columns subjected to variable axial force loading exhibit an asymmetric hysteretic behavior, while the energy dissipation and the ultimate displacement are in substantial agreement with the ones subjected to constant axial forces.
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Keywords:
- RC column /
- mechanical behavior /
- multi-spring model /
- numerical simulation /
- parameter study
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期刊类型引用(2)
1. 赵雪冰，宋晓滨，唐践扬. 基于大变形需求的胶合木梁柱螺栓-钢填板节点抗震性能试验研究. 建筑结构学报. 2025(02): 72-82 . 
百度学术
2. 叶继红，许玲玲. 基于MDEM的非线性半刚性空间钢框架的弹塑性动力分析. 工程力学. 2025(02): 54-63 . 本站查看
其他类型引用(1)
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