Experimental and numerical studies of a novel three-dimensional isolation device incorporating disc springs with U-shaped dampers

Yu, Tongqiang; Zhang, Chao; Huang, Zelan; Huang, Weiyuan; Zhong, Genquan; Ou, Dennis

doi:10.1016/j.soildyn.2023.108164

Cited by 12 publications

(1 citation statement)

References 41 publications

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“…A crucial consideration in avoiding possible damage to the fragile wall panels with door openings lies in ensuring that the subpanels possess a higher resistance than the friction force of the sliding joints. [59][60][61] Also, a significant challenge for the sliding configurations is guaranteeing sufficient out-of-plane capability of the infill walls with door openings. 62 While these solutions indeed offer wall panels with commendable ductility and mitigate damage compared to conventional infill walls with door openings, they still exhibit undesirable corner crushing and crack development in the infill walls surrounding the door openings once the inter-story drift ratio higher than 3.0%.…”

Section: Introductionmentioning

confidence: 99%

Experimental and analytical studies of infill wall with sliding joints considering a door opening

Huang,

Niu,

Zhang

et al. 2024

Earthq Engng Struct Dyn

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Semi‐rigid steel frame stands out due to its remarkable deformation capability under seismic loading, while the introduction of partitioned walls would disturb the expected seismic behavior of the infilled steel frames. Furthermore, the presence of door openings might exacerbate these negative effects. To mitigate the detrimental multiple‐diagonal strut effect of traditional infill walls around the door opening, an innovative low‐damage wall panels system: prefabricated infill wall panels with a door opening and sliding joints are presented for semi‐rigid steel frames. For testifying the effectiveness of the proposed structure, a quasi‐static test was carried out on three half‐scaled steel frames: a bare frame, a frame infilled with conventional wall panels with a door opening, and a frame infilled with the novel wall panel system with a door opening. Experimental results reveal that the developed innovative wall panels with a door opening could avoid unfavorable crack developments and opening deformation around the door area. It is mainly attributed to the releasement of the adverse multiple‐diagonal strut mechanism of traditional wall panels with door openings. Thus, the presented infilled frame showcases seismic performance similar to the bare steel frame, while having a higher energy dissipation capacity. Moreover, the developed analytical prediction method based on the superposition principle could accurately estimate the lateral load‐carrying capacity of the structures. Due to negligible deformation of the both bottom infill wall panel and the door opening, the innovative infill wall only contributes about 10% lateral load‐carrying capability to the infilled frame.

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