Experimental study on flexural behaviors of slotted light-gauge steel stud walls subjected to distributed loading

被引：0
|
作者：
Chang Y. [1 ,2 ]
Wang Y. [1 ,2 ]
Lin J. [1 ,2 ]
Geng Y. [1 ,2 ]
机构：
[1] Key Lab of Structures Dynamic Behavior and Control, Ministry of Education, Harbin Institute of Technology, Harbin
[2] Key Lab of Smart Prevention and Mitigation of Civil Engineering Disasters, Ministry of Industry and Information Technology, Harbin Institute of Technology, Harbin
来源：
Jianzhu Jiegou Xuebao/Journal of Building Structures | 2023年 / 44卷 / 04期
关键词：
enclosing wall; flexural behavior; gypsum board; light-gauge slotted steel stud; standard wall element; static test;
D O I：
10.14006/j.jzjgxb.2022.C030
中图分类号：
学科分类号：
摘要：
In order to study the contribution of gypsum boards to the flexural resistance of light-gauge steel framing (LSF) wall, five failure tests of LSF wall elements with slotted studs were carried out under uniformly distributed transverse loading considering parameters include the height of stud web and the spacing of self-tapping screws. Ultimate strength, failure mode, deflection, strain development and shear lag effect of test specimens were studied. Based on test results, a finite element model was developed and compared with test results for validation. Based on the finite element model, the influences of the thickness of gypsum board, the spacing and the web width of steel stud on the effective width of gypsum board were studied. The test results show that the slotted stud has much lower strength and stiffness, causing shear lag effect and shear buckling of the web near the ends of steel studs when subjected to distributed loading. When the wall thickness is in the range of 100 mm to 200 mm, the self-tapping screws can ensure that the gypsum boards and steel studs work as one unit with a spacing of 300 mm. When the slotting ratio remains unchanged, the flexural stiffness and bearing capacity of the wall elements can be increased effectively by increasing the web height of the slotted studs. It is also found that the finite element model can properly reflect the shear lag effect and agrees well with test results. For initial stiffness and ultimate strength of the wall elements, the maximum differences between finite element model predictions and test results are less than 6% and 4%, respectively. The parametric analysis results show that the effective width of gypsum board is mainly influenced by the web width of steel stud. © 2023 Science Press. All rights reserved.
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页码：297 / 308
页数：11
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