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首页> 美国卫生研究院文献>Royal Society Open Science >Experimental study on seismic performance of a low-energy consumption composite wall structure of a pre-fabricated lightweight steel frame
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Experimental study on seismic performance of a low-energy consumption composite wall structure of a pre-fabricated lightweight steel frame

机译：预制轻钢框架低能耗复合墙结构抗震性能的试验研究

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摘要

This study developed a low-energy consumption composite wall structure constructed with a pre-fabricated lightweight steel frame that is suitable for houses in villages and towns and evaluated its anti-seismic performance. A low-reversed cyclic-loading test was conducted on four full-scale pre-fabricated structure specimens, including a lightweight, concrete-filled steel tube (CFST) column frame specimen (abbreviated as SFCF), a lightweight CFST column frame composite wall specimen (abbreviated as SFCFW), an H-steel column frame specimen (abbreviated as HSCF) and an H-steel column frame composite wall specimen (abbreviated as HSCFW). The failure characteristics, hysteretic behaviour, strength, rigidity, ductility and energy dissipation capacity of each specimen were compared and analysed. The results demonstrated that the pre-fabricated, double L-shaped beam–column joint with a stiffener rib which was proposed in this study worked reliably and exhibited good anti-seismic performance. The yield, ultimate and frame yield loads of the specimen SFCFW were 1.72, 1.80 and 2.03 times higher than those of specimen SFCF. The yield load, ultimate load and frame yield loads of specimen HSCFW were 1.27, 1.68 and 1.82 times higher than those of specimen HSCF. This indicates that the embedded composite wall contributed significantly to the horizontal bearing capacities of the SFCF and HSCF specimens. The embedded composite wall was divided into multiple strip-shaped composite panels during failure and achieved a stable support for the frame in the later stages of elastoplastic deformation. The horizontal strips of the tongue-and-groove connection between the strip-shaped composite panels produced reciprocating bite displacements, and ultimately improved the structure's energy dissipation capacity significantly.
机译：这项研究开发了一种低能耗的复合墙结构，该结构由预制的轻型钢框架构成，适用于乡村和城镇的房屋，并评估了其抗震性能。在四个完整的预制结构标本上进行了低反向循环荷载试验，其中包括轻质混凝土钢管（CFST）柱框架标本（缩写为SFCF），轻质CFST柱框架复合墙标本（缩写为SFCFW），H型钢柱框架标本（缩写为HSCF）和H型钢柱框架复合墙标本（缩写为HSCFW）。比较并分析了每个试样的破坏特性，滞后性能，强度，刚度，延展性和能量耗散能力。结果表明，本研究中提出的带有加劲肋的预制双L形梁-柱节点可靠地工作并且具有良好的抗震性能。 SFCFW试样的屈服载荷，极限载荷和框架屈服载荷分别比SFCF试样高1.72、1.80和2.03倍。 HSCFW试样的屈服荷载，极限荷载和框架屈服荷载分别比HSCF试样高1.27倍，1.68倍和1.82倍。这表明嵌入式复合墙对SFCF和HSCF标本的水平承载力有很大贡献。嵌入式复合墙在破坏过程中被分成多个条形复合墙板，并在弹塑性变形的后期为框架提供了稳定的支撑。条形复合面板之间的舌槽连接的水平条带产生往复的咬合位移，并最终显着提高了结构的耗能能力。

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