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Fastener Demands for Sheathing-Braced Cold-Formed Steel Stud Gravity Walls

机译:护套支撑冷弯型钢螺柱重力墙的紧固件需求

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Abstract We explore, in this paper, the demands and behavior on fasteners supplying sheathing-based bracing of gravity loaded cold-formed studs and wall assemblies. The studies are carried out by shell finite element (FE) models, which are compared to analytical solutions and previously completed laboratory tests conducted by the authors. The connection between the sheathing and the stud should be able to develop enough resistance to restrain global buckling of the studs; therefore, special attention has to be given to the demands on these connections for design. Local buckling and stress concentrations may damage some connections and redistribution of forces should be ensured. Classical practice for determining fastener demand - i.e., the 2% rule - may be deficient. An analytical method developed for determining fastener demand is compared to the FE models presented in this paper; the analytical method results in a reasonable prediction of the fastener forces in wall studs.
机译:摘要我们在本文中探讨了紧固件对重力作用的冷成型螺柱和墙组件提供基于护套的支撑的要求和性能。研究是通过壳有限元(FE)模型进行的,将其与分析解决方案和作者先前完成的实验室测试进行了比较。护套和双头螺栓之间的连接应能够产生足够的阻力,以限制双头螺栓整体弯曲。因此,在设计时必须特别注意这些连接的要求。局部屈曲和应力集中可能损坏某些连接,应确保力的重新分配。确定紧固件需求的经典做法(即2%规则)可能是不足的。将确定紧固件需求的分析方法与本文介绍的有限元模型进行了比较;该分析方法可以合理预测壁钉中的紧固力。

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