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提出一种基于能量阈值的评估钢筋混凝土柱竖向剩余承载力的损伤准则。该损伤准则是单步能量阈值与总滞回耗能的线性组合,能反映能量阈值与总能量相互耦合的影响。对振动台试验的数据、拟静力试验数据和数值算例进行了模拟分析,结果表明,基于能量阈值的损伤准则能很好评估各种工况下钢筋混凝土柱竖向剩余承载力,可用于建筑和桥梁结构地震作用下失效路径分析。
A damage criterion for evaluating the vertical residual capacity of reinforced concrete columns based on energy threshold is proposed. The damage criterion is a linear combination of the single-step energy threshold and the total hysteresis energy, which can reflect the influence of the mutual coupling of the energy threshold and the total energy. The results of shaking table test data, quasi-static test data and numerical examples show that the damage criterion based on energy threshold can well evaluate the vertical residual bearing capacity of reinforced concrete columns in various working conditions and can be used in Failure Path Analysis under Earthquake Action of Buildings and Bridge Structures.