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根据钢骨混凝土剪力墙的试验结果,对构件在反复水平荷载作用下的损伤过程和累积滞回耗能进行了研究。分析了构件的裂缝开展过程及破坏性态,将剪力墙损伤发展分为三个阶段;给出了累积滞回耗能随加载循环水平的变化规律,得到了配箍率、配钢率对累积滞回耗能的影响。根据现有的损伤模型,对剪力墙试件的损伤指数进行了比较,提出各参数的计算方法,并对损伤模型进行了修正,使其适合于剪力墙的损伤评估。根据墙体不同阶段的损伤程度,将钢骨混凝土剪力墙结构的性能划分为使用良好、保证人身安全和防止倒塌三个性能水平,提出用损伤指数作为剪力墙结构的性能控制指标,给出不同性能水平下的宏观描述和相应的损伤指数,为钢骨混凝土剪力墙结构基于损伤的性能设计方法提供了依据。
According to the test results of steel reinforced concrete shear walls, the damage process and cumulative hysteresis energy dissipation under repeated horizontal load are studied. The crack propagation process and the destructive behavior of the member are analyzed. The damage development of the shear wall is divided into three stages. The law of cumulative hysteresis energy dissipation with the loading cycle is given. The effect of cumulative hysteresis energy consumption. According to the existing damage model, the damage index of the shear wall specimen is compared, the calculation method of each parameter is proposed, and the damage model is modified to make it suitable for the damage assessment of the shear wall. According to the degree of damage in different stages of the wall, the performance of SRC walls is divided into three performance levels of good use, personal safety and collapse prevention. The damage index is proposed as the performance control index of the shear wall structure The macroscopic description and the corresponding damage index under different performance levels provide the basis for the design method of steel reinforced concrete shear wall structure based on damage.