Cyclic Shear Behavior of Gypsum Board-to-Steel Stud Screw Connections in Nonstructural Walls
Cyclic Shear Behavior of Gypsum Board-to-Steel Stud Screw Connections in Nonstructural Walls
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非结构墙中石膏板与钢螺柱螺钉连接的循环剪切行为
DOI：
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发表时间：
2016
期刊：
影响因子：
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通讯作者：
M. Maragakis
中科院分区：
文献类型：
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作者：
E. Rahmanishamsi;S. Soroushian;M. Maragakis
石膏钢螺柱隔墙是由轻型冷弯型钢螺柱和石膏板连接自钻螺钉组成。先前对这些墙体抗震性能的实验研究表明，在非常低的振幅激励下，石膏-螺栓连接（GSCs）普遍失效。GSCs的破坏导致隔墙强度和刚度的损失。内华达大学里诺分校进行了一系列组件测试，以评估GSCs的剪切力和位移能力。紧固件间距（中心到中心以及中心到边缘）、加载方案（单调或循环）和螺柱厚度在不同的样品之间有所不同。然后使用测试数据来开发GSCs在位移方面的剪切能力的脆性曲线。此外，提出了一系列非线性GSC铰链模型，并利用构件实验数据进行了验证。
Gypsum steel-stud partition walls are composed of light-gauge, cold-formed steel studs, and gypsum boards attached with self-drilling screws. Previous experimental studies on the seismic performance of these walls have shown widespread failure of gypsum-to-stud connections (GSCs), initiated at very low amplitude excitation. The failure of GSCs resulted in loss of strength and stiffness of the partition walls. A series of component tests has been conducted at University of Nevada, Reno to evaluate the shear force and displacement capacities of GSCs. Fastener spacing (center to center and also center to edge), loading protocol (monotonic or cyclic), and stud thickness were varied between specimens. The test data were then used to develop fragility curves for shear capacities of GSCs in terms of displacements. Additionally, a series of nonlinear GSC hinge models were proposed and validated using component experimental data.