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工业建筑  2004 

混凝土受拉随机损伤本构关系及其应用

DOI: 10.13204/j.gyjz200410015

Keywords: 混凝土,应力-应变关系,损伤,应变软化

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Abstract:

利用扩展的弹簧模型,从细观层次上分析了混凝土试件在单调拉力作用下的宏观性能,解释了混凝土单轴受拉应力-应变关系中的应变软化和应力跌落现象;基于静力平衡和变形协调条件,建立受拉本构关系;利用单轴受拉试验,确定细观损伤单元的极限破坏应变随机场分布参数;与已有试验结果相比较,结果吻合较好。

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