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对3榀CFRP筋转换梁框支剪力墙进行了低周往复荷载试验,并与1榀全钢筋转换梁框支剪力墙对比,分析了其破坏模式、受力特征和滞回特征等抗震性能。通过OpenSees分析平台,选取基于刚度法理论的非线性梁柱单元,并结合零长度转动弹簧单元,建立了合理考虑纵筋粘结滑移的CFRP筋转换梁框支剪力墙数值分析模型。结果表明:考虑了纵筋粘结滑移的数值模型能较好地模拟CFRP筋转换梁框支剪力墙在低周往复荷载作用下滞回曲线的捏缩特性,对试件屈服荷载和极限承载力也有较好的模拟精度。
The low-cycle cyclic loading test was carried out on the 3 × CFRP tendons to convert the shear-wall of the beam to the frame, and compared with the shear wall of 1 × 转 full-beam transfer beam, the failure modes, force characteristics and hysteresis characteristics were analyzed performance. Based on the OpenSees analysis platform, a nonlinear beam-column element based on stiffness theory was selected and a numerical analysis model of frame-supported shear wall of CFRP reinforcement beam was proposed. The results show that the numerical model considering longitudinal bond-slip can well simulate the pinch-shrink characteristics of the hysteretic curve under the cyclic low-cyclic loading of CFRP tendons, Bearing capacity also has better simulation accuracy.