首页|新型装配式冷弯薄壁型钢墙体抗侧性能分析

新型装配式冷弯薄壁型钢墙体抗侧性能分析

Analysis of lateral resistance performance of a novel prefabricated cold-formed thin-walled steel framed wall

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为了研究使用矩形钢管连接的新型全预制冷弯薄壁型钢复合墙体的抗侧性能,设计了6个足尺试件,并进行了水平低周往复加载试验,分析了龙骨间距、覆面板类型、单面或双面覆板等因素对新型复合墙体试件抗侧性能的影响.新型墙体的覆面板为OSB板与硅晶钙板.试验结果表明:使用矩形钢管连接的新型复合墙体具有良好的整体抗震性能;单面或双面覆板对墙体抗侧性能影响显著,双面覆板的新型复合墙体的屈服荷载约为单面覆板新型复合墙体的2倍;龙骨间距和覆面板材料对墙体抗侧性能的影响相对较小.在试验基础上,使用OpenSEES软件建立了试验墙体的有限元分析模型,并针对矩形钢管壁厚、周边螺钉间距取值进行了参数分析.参数分析结果表明,矩形钢管连接件壁厚取值推荐为2.5 mm,周边螺钉间距推荐取50～100 mm.
To investigate the lateral resistance behavior of a novel fully prefabricated cold-formed thin-walled steel(CFTS)wall connected with rectangular steel tubes,six full-scale specimens were designed and tested under lateral low cyclic loading.The effects of stud spacing,type of sheathing boards and single or double-si-ded sheathing on the lateral resistance of the new-type CFTS wall specimens were studied.The novel CFTS wall specimens are sheathed with OSB and non-asbestos calcium silicon boards.The test results reveal that the novel CFTS wall connected with rectangular steel tubes has good overall seismic performance.Single-sided or double-sided sheathing has a significant effect on the lateral resistance performance of the CFTS wall,while stud spacing and sheathing material have relatively smaller effects.The shear strength of double-sided sheathed CFTS wall is approximately two times that of single-sided sheathed CFTS wall.Based on the test,the finite element models of test specimens were established by OpenSEES software,and parametric analysis was carried out for the thickness of the rectangular steel tube and the spacing of perimeter screws.The results of parametric analysis indicate that rectangular steel tube with thickness of 2.5 mm is the optimum choice and 50-100 mm is recommended for the perimeter screw spacing of the novel CFTS wall.

cold-formed steel walloriented strand board(OSB)non-asbestos calcium silicon boardlateral low cyclic loading testnumerical simulation

王莉萍、伍欣雨、胡萌、刘劲、丁发兴

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中南大学土木工程学院,长沙 410075

中南大学湖南省装配式建筑工程技术研究中心,长沙 410075

湖南城市学院土木工程学院,益阳 413000

冷弯薄壁型钢复合墙体 OSB板 硅晶钙板 低周往复加载试验 数值模拟

国家自然科学基金资助项目湖南省自然科学基金资助项目湖南省杰出青年基金资助项目

516085382021JJ500292019JJ20029

2024

10.3969/j.issn.1001-0505.2024.01.017

东南大学学报(自然科学版)
东南大学

东南大学学报(自然科学版)

CSTPCD北大核心
影响因子：0.989
ISSN：1001-0505
年,卷(期)：2024.54(1)
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