Experimental investigation of strengthened screw connection and application in CFS shear walls

Wu, Hanheng; Chao, Sisi; Li, Yanchun; Sang, Liurui

doi:10.1016/j.jcsr.2019.105870

Cited by 14 publications

(4 citation statements)

References 14 publications

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“…Based on these observations, the author proposed that monotonic tests may be suitable for seismic and wind load assessments without accounting for the effect of cyclic loads. This conclusion conflicts with a similar study by Wu et al [8], that suggests cyclic load patterns result in lower ultimate load capacities due to accumulated screw-sheathing interface damage, indicating the need for a reduction factor to apply to structures designed using monotonic test values alone.…”

Section: Introductioncontrasting

confidence: 82%

“…Discussed later in this paper, the authors conducted a numerical study, validating their model with data from these tests. Wu and Sang [12] investigated a novel stud-to-sheathing connection reinforcement method using both small-and full-scale specimens under monotonic and cyclic loads. Installing CFS strips between the screw fastener head and the sheathing material, shear capacity of reinforced samples was up to 1.53 times higher than unreinforced specimens.…”

Section: Introductionmentioning

confidence: 99%

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Experimental Investigation of Sheathed Cold‐Formed Steel Sigma Studs Under Compression Loading

Yousefi,

Samali,

2023

ce papers

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Cold‐formed steel sections are used to form various components of low‐and medium‐rise buildings. Such sections are commonly constructed with sheathing board, providing thermal and acoustic separation between interior partitions. In contemporary projects, these sheathing boards have been used to provide bracing and increasing lateral stiffness. The strength and stiffness of sheathing‐braced structural assemblies is governed by connections between framing elements and sheathing components. This paper describes an experimental investigation of stability and strength of sheathed cold‐formed steel lipped sigma wall studs under compression loading. A total of 35 experimental tests conducted covering various parameters including, sheathing plasterboard thickness, stud and track thickness, plasterboard configuration and density. Sheathing density and thickness are found to be significant in impacting the compression strength of the sheathed cold‐formed steel lipped sigma studs. A clear pattern was noted between plasterboard material and thickness on the stability and strength of the sheathed stud. It is found that higher density boards provided the greatest restraint against buckling, as did increased thicknesses. Isolating direct loading of the sheathing, and Composite action between the stud and sheathing are shown to be significant in determining the strength and controlling limit state of the stud.

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Section: Introductioncontrasting

confidence: 82%

Section: Introductionmentioning

confidence: 99%

Experimental Investigation of Sheathed Cold‐Formed Steel Sigma Studs Under Compression Loading

Yousefi,

Samali,

2023

ce papers

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show abstract

“…It increased the lateral stiffness and ductility capacity and consequently, it can be considered for high seismic regions. Wu et al [5] investigated the screw connection of CFS profiles and sheathing in shear wall panels, where an innovative connection was proposed by using additional CFS strips. The shear capacity was improved up to 1.5 times, the elastic stiffness was enhanced up to 2 times, and the energy dissipation was also increased.…”

Section: Introductionmentioning

confidence: 99%

Simplified Numerical Model Development of Lightweight‐concrete Encased Cold‐formed Steel Column‐end Joints and Panels

Eid¹,

Joó²

2022

ce papers

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“…Apart from the realization and obtainment of cold-formed profiles from thin steel sheets up to 1 mm used for the purpose of creating structural elements for buildings, there still remains the very important issue of joining these profiles. There are numerous studies in the scientific literature presenting a variety of connecting solutions such as welding, riveting, screws, self-tapping screws, bolting, blind rivets, self-drilling screws, fired pins, arc-welding, imprint holes or a combination of these [8,[10][11][12][13][14][15][16][17][18][19][20][21].…”

Section: Introductionmentioning

confidence: 99%

Experimental Investigation and Numerical Simulation of C-Shape Thin-Walled Steel Profile Joints

Taranu

Toma

2021

Buildings

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The versatility of steel, its high resistance in relation to its low mass, as well as the easily accessible technology in the context of using recyclable materials and the low negative impact on the environment represent important arguments in using thin-walled steel profiles to make structures for buildings with a low height regime. This paper presents the results of an experimental program that investigated the behavior of three types of joints in a T-shape form made of thin-walled steel profiles to make shear wall panels or truss beam floors. Due to the small dimensions of the C-profiles of 89 × 41 × 12 × 1 mm, and of the technology of their joining, manufacturers prefer the hinged connections of elements with self-drilling screws. The purpose of the research presented in this paper is to assess the maximum capacity of the joints, the elastic and post-elastic behavior until failure, and also the mechanisms failure. The types of joints analyzed are commonly used in the production of structural systems for houses. The experimental program, which consisted of testing 5 specimens for each type of joint in tension (shear on screws), showed different behavior in terms of load-displacement. The experimental, tested models were analyzed by finite element simulations in an ANSYS nonlinear static structure with 3D solid models. The materials were defined by a bilinear true stress–strain curve obtained after some experimental tensile tests of the steel. The results of the experimental tests showed that the main failure mechanism is a yielding of the holes where the screws were mounted and a shearing of the profile walls. Adding an additional screw on each side increases the capacity of the joints, but not until a yield loss is obtained. In conclusion, it is shown that the solution is suitable for a low level of loading in a static manner; however, additional studies are necessary in order to develop and verify other solutions, thus improving the strength of the connection.

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Experimental investigation of strengthened screw connection and application in CFS shear walls

Cited by 14 publications

References 14 publications

Experimental Investigation of Sheathed Cold‐Formed Steel Sigma Studs Under Compression Loading

Experimental Investigation of Sheathed Cold‐Formed Steel Sigma Studs Under Compression Loading

Simplified Numerical Model Development of Lightweight‐concrete Encased Cold‐formed Steel Column‐end Joints and Panels

Experimental Investigation and Numerical Simulation of C-Shape Thin-Walled Steel Profile Joints

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