带强水平和弱竖向混合连接的装配式混凝土剪力墙抗震性能研究

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振动与冲击 ›› 2024, Vol. 43 ›› Issue (19) : 306-318.

论文

带强水平和弱竖向混合连接的装配式混凝土剪力墙抗震性能研究

韩启浩，YASIR Naeem，汪大洋，何建鑫

作者信息 +

Aseismic performance of prefabricated concrete shear walls with strong horizontal andweak vertical hybrid connections

HAN Qihao, YASIR Naeem,WANG Dayang，HE Jianxin

Author information +

文章历史 +

摘要

基于完成的带水平连接的装配式混凝土剪力墙试验研究，提出了一种带混合连接的装配式混凝土剪力墙，其中，水平连接采用高强螺栓的“强”连接方式，竖向连接采用钢剪切键的“弱”连接方式。首先，结合已完成的试验，建立带水平连接的装配式混凝土剪力墙的数值模型，通过对比试验与数值分析结果，验证了材料本构关系的选取、各部件相互作用关系设置的正确性。进一步，采用同样的建模方法，建立带混合连接的装配式混凝土剪力墙的数值模型。分析了不同竖缝型式和增设钢剪切键对带混合连接的装配式混凝土剪力墙抗震性能的影响，揭示了其损伤失效模式。结果表明：单片剪力墙模块分割成较小尺寸模块拼装后，抗侧刚度有一定程度地减小，但刚度退化更缓慢，剪力墙墙板损伤更小，具有更好的变形能力；在剪力墙模块之间的竖缝中增设钢剪切键后，提高抗侧刚度的同时还可以改善其刚度退化行为，与不带钢剪切键模型相比，单片剪力墙(Single模型)和竖向滑动双片剪力墙(Sliding模型)峰值割线刚度分别提高了14.9%和11.4%；带混合连接的装配式混凝土剪力墙的损伤失效模式为“钢剪切键塑性屈服-墙板模块底部损伤-墙板模块破坏”，实现了钢剪切键塑性屈服耗能与墙板塑性损伤转移的“双功能”控制。

Abstract

Based on the completed experimental research on precast concrete shear walls with horizontal connections (PCSW-HCs), precast concrete shear walls with hybrid connections (PCSW-HVCs), where the “strong” connection method with bolted connections are adopted in the horizontal connections and the “weak” connection method with steel shear keys (SSKs) are employed in the vertical connections, are proposed in this paper. Firstly, according to the completed experiments, numerical models of PCSW-HCs were established. By comparing the experimental and numerical results, the correctness of the material constitutive selection and interactions setting were verified. Furthermore, numerical models of the PCSW-HVCs were developed by using the same modeling method. The influence of different types of vertical slits and the addition of SSKs on the seismic performance of the PCSW-HVCs were analyzed, and its damage and failure mode was revealed. The results show that as the single shear wall module is divided into smaller modules and assembled together, the lateral stiffness is reduced, but the stiffness degradation is slower. The damage of the shear wall panel with smaller size is decreased, and it possesses better deformation ability. As the SSKs are provided in the vertical slits between the adjacent shear wall modules, the lateral stiffness can be increased and its stiffness degradation behavior are improved. Compared with the models without SSKs, the peak secant stiffness of the Single model and Sliding model are increased by 14.9% and 11.4% respectively. The damage and failure mode of the PCSW-HVCs is driven as follows: plastic yield of SSKs occur firstly, the damage of the bottom of the wall panels module is presented further, and the wall panel module suffer failure finally, and it achieves a dual function control, namely energy dissipation with plastic yielding of SSKs and plastic damage relocation of wall panels.

导出引用

韩启浩, YASIR Naeem, 汪大洋, 何建鑫. 带强水平和弱竖向混合连接的装配式混凝土剪力墙抗震性能研究[J]. 振动与冲击, 2024, 43(19): 306-318

HAN Qihao, YASIR Naeem, WANG Dayang, HE Jianxin. Aseismic performance of prefabricated concrete shear walls with strong horizontal andweak vertical hybrid connections[J]. Journal of Vibration and Shock, 2024, 43(19): 306-318

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