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机构地区:[1]内蒙古科技大学建筑工程学院,内蒙古包头014010
出 处:《建筑科学与工程学报》2016年第5期85-91,共7页Journal of Architecture and Civil Engineering
基 金:内蒙古自治区自然科学基金项目(2015MS0552)
摘 要:采用常用于墙面的YX-35-125-750型压型钢板,结合实际工程中的常规施工做法,组装以自攻螺钉作为连接件的蒙皮结构并进行抗剪试验,探究自攻螺钉间距与布置形式、压型钢板板厚、檩条数量变化对蒙皮结构抗剪强度与刚度的影响规律,通过对试验现象的分析论述了5组试件的最终破坏形态,探讨了不同变化因素对蒙皮效应的影响;介绍了美国冷弯型钢蒙皮设计规定方法(AISI法)中的简化计算公式,并运用简化公式对蒙皮试件的极限抗剪强度与刚度进行了详细计算。结果表明:合理地布置连接件、安排板跨间距或选用板厚都可以适当提高结构的整体抗剪强度与刚度,按常规的施工做法可通过合理调控以上各因素以控制蒙皮效应对整体结构的影响。Combined with the common practice in practical engineering and using YX-35-125-750 pressure plate which was commonly used in the wall, the skin diaphragm structure was assembled with self-tapping screws as connecting pieces and the shear tests were carried out. The influence laws of self-tapping screw spacing and layout form, thickness of profiled sheet and number of purlins on shear strength and stiffness of skin diaphragm structure were explored. Through the analysis of experimental phenomena, the final failure modes of 5 groups of specimens and the influences of different factors on skin effect were discussed. The simplified calculation formula of the design method of cold bending skin diaphragm in the United States (AISI method) was introduced, and the ultimate shear strength and stiffness of the skin diaphragm specimen were calculated by the simplified formula. The results show that the whole shear strength and stiffness of structure can be improved by reasonably arranging the connecting pieces and the span of plates or selecting the thickness of plate. According to the conventional construction method, the influence of skin effect on the whole structure can be controlled by adjusting the above factors.
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