A new screw connection model and FEA of CFS shear wall panels

Nithyadharan, M.; Kalyanaraman, V.

doi:10.1016/j.jcsr.2020.106430

Cited by 9 publications

(3 citation statements)

References 33 publications

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“…In recent years, several finite element studies have been conducted on wood–concrete composite beams with screw connectors [ 12 , 13 , 14 , 15 , 16 , 17 ]. Lopes et al [ 13 ] proposed a simplified method for determining the effective flexural stiffness of wood–concrete composite structures.…”

Section: Introductionmentioning

confidence: 99%

Experimental and Numerical Study on Shear Performance of Pitched Screws in Wood–Concrete Composite Beam with Wooden Partitions

Yuan

Sun

et al. 2023

Materials

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Wooden partitions are extensively used as formwork for pouring concrete in wood–concrete composite beams, especially in the restoring of wood structures. However, limited research has been conducted on the shear properties of pitched screw connectors in wood–concrete composite beams with wooden partitions. Therefore, this study investigated the shear performance of pitched screws in wood–concrete composite beams with wooden partitions through push-out tests and finite element analysis. The test results revealed that the failure mode of pitched screws was characterized by the pulling failure of the screws under tensile–shear action. The finite element analysis accurately predicted the failure mode, stress distribution, and load–slip behavior of pitched screws. Furthermore, the effects of the screw embedding angle, wooden partition thickness, concrete strength, and the length–diameter ratio of the screw were investigated through parametric analyses. It was found that when the screw diameter was 12 mm, the shearing capacity of the pitched screws with embedding angles of ±45°, ±60°, and ±75° decreased by 3.9%, 11.9%, and 26.9%, respectively, compared to the screws with an embedding angle of ±30°. The shearing capacity of pitched screws improved with the increase in the concrete strength and length–diameter ratio of the screw. However, the improvement in shearing capacity became less significant as the concrete strength and length–diameter ratio of the screw increased. Moreover, an increase in wooden partition thickness reduced the shearing capacity of pitched screws.

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Section: Introductionmentioning

confidence: 99%

Experimental and Numerical Study on Shear Performance of Pitched Screws in Wood–Concrete Composite Beam with Wooden Partitions

Yuan

Sun

et al. 2023

Materials

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“…Unlike conventional CFS hollow walls, the studs in infilled walls were not only braced by sheathings, but also wrapped by filling materials. In spite of the available mechanical behavior of the traditional CFS wall studs being well understood [18][19][20][21][22][23], there were significant distinctions between the design of the CFS wall stud and the stud encased in lightweight mortars under various types of loading.…”

Section: Introductionmentioning

confidence: 99%

Mechanical behavior analysis of LEM-infilled cold-formed steel walls

Wang¹,

Wang²,

Guo³

2022

Sustain. Struct.

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The sustainable development of the engineering structures mainly depends on the environmental- friendly to structural components. This requires the development of sustainable and new materials and structures that would be a worthy alternative for the available. This paper proposed a novel type of cold-formed steel (CFS) shear wall which filling light EPS mortars (LEM) into the space of CFS framing. LEM-infilled CFS walls carry forward the merits of traditional CFS wall, for example lightweight, easy installation, superior earthquake resistance and efficient energy saving. Moreover, employing recycled desulfurization gypsum and EPS in the structural materials reduce environmental pollution. However, the behavior of LEM-infilled CFS wall is not fully explored yet, which results in the low understanding and application of the material around the world. Based on this background, a review of mechanical response tests will contribute to a better awareness. In this paper, three types of mechanical behaviours are discussed including axial compressive behaviour, out-of-plane flexural behaviour, and cyclic behaviour. The previous researches on the mechanical performance of LEM-infilled CFS walls were reviewed. And the typical failure patterns and general results were described and discussed. This work will provide an excellent reference to current practice and future exploration.

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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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A new screw connection model and FEA of CFS shear wall panels

Cited by 9 publications

References 33 publications

Experimental and Numerical Study on Shear Performance of Pitched Screws in Wood–Concrete Composite Beam with Wooden Partitions

Experimental and Numerical Study on Shear Performance of Pitched Screws in Wood–Concrete Composite Beam with Wooden Partitions

Mechanical behavior analysis of LEM-infilled cold-formed steel walls

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

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