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Experimental investigation on the hysteretic behavior of precast concrete walls with energy‐dissipated dry connections
Structural Concrete ( IF 3.0 ) Pub Date : 2020-11-09 , DOI: 10.1002/suco.202000311
Hao Zhang 1, 2 , Hongnan Li 1, 3 , Xuanyi Chen 1 , Chao Li 3
Affiliation  

A new method of assembling precast concrete (PC) wall panels is proposed to establish a stable and reliable earthquake‐resistant system. The dry‐connection method is recommended by welding energy‐absorbing connectors with mild steel plates at the vertical joints between adjacent walls. The connectors replace cast‐in‐place (CIP) constructions to rapidly and efficiently connect wall panels and utilize the deformations occurring due to the vertical relative displacement of the wall panels to dissipate energy and mitigate an excessive seismic response. To evaluate the effectiveness of the new connection approach, CIP and connector‐wall assembly specimens with different aspect ratios were designed and tested under cyclic lateral force‐displacement controlled loading. Evaluation of the measured experimental results indicate that the proposed dry‐connection method can be adopted to achieve proper ductility and energy dissipation levels while maintaining a sufficient level of connection strength and stiffness of the PC wall system.

中文翻译:

耗能干连接预制混凝土墙的滞回性能试验研究

提出了一种组装预制混凝土墙面板的新方法,以建立稳定可靠的抗震系统。建议采用干式连接方法,将能量吸收连接器与低碳钢板的相邻壁之间的垂直接缝处焊接在一起。该连接器取代了现浇(CIP)结构,以快速有效地连接墙面板,并利用由于墙面板的垂直相对位移而产生的变形来耗散能量并减轻过度的地震响应。为了评估新连接方法的有效性,设计了具有不同纵横比的CIP和连接器-壁组件标本,并在循环横向力-位移控制的载荷下进行了测试。
更新日期:2021-01-14
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