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Steel and Composite Structures Volume 41, Number 6, December25 2021 , pages 861-871 DOI: https://doi.org/10.12989/scs.2021.41.6.861 |
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Hysteretic performance of a novel composite wall panel consisted of a light-steel frame and aerated concrete blocks |
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Xiaoping Wang, Fan Li, Liangdong Wan and Tao Li
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| Abstract | ||
| This study aims at investigating the hysteretic performance of a novel composite wall panel fabricated by infilling aerated concrete blocks into a novel light-steel frame used for low-rise residential buildings. The novel light-steel frame is consisted of two thin-wall rectangular hollow section columns and a truss-beam assembled using patented U-shape connectors. Two bare light-steel frames and two composite wall panels have been tested to failure under horizontal cyclic loading. Hysteretic curves, lateral resistance and stiffness of four specimens have been investigated and analyzed. Based on the testing results, it is found that the masonry infill can significantly increase the lateral resistance and stiffness of the novel light-steel frame, about 2.3~3 and 21.2~31.5 times, respectively. Failure mode of the light-steel frame is local yielding of the column. For the composite wall panel, firstly, masonry infill is crushed, subsequently, local yielding may occur at the column if loading continues. Hysteretic curve of the composite wall panel obtained is not plump, implying a poor energy dissipation capacity. However, the light-steel frame of the composite wall panel can dissipate more energy after the masonry infill is crushed. Therefore, the composite wall panel has a much higher energy dissipation capacity compared to the bare light-steel frame. | ||
| Key Words | ||
| composite wall panel; hysteretic performance; lateral resistance; lateral stiffness; light-steel frame; low-rise residential building | ||
| Address | ||
| Xiaoping Wang:School of Civil Engineering and Architecture, Wuhan University of Technology, Wuhan 430070, P.R. China Fan Li:School of Civil Engineering and Architecture, Wuhan University of Technology, Wuhan 430070, P.R. China Liangdong Wan:Wuhan Dunxin Steel Structure Design Co., Ltd., Wuhan 430223, P.R. China Tao Li:School of Civil Engineering and Architecture, Wuhan University of Technology, Wuhan 430070, P.R. China | ||