Structural performance of light steel framing panels using screw connections subjected to lateral loading

Henriques, José; Rosa, N.; Gervásio, Helena; Santos, Paulo; Silva, L. Simões da

doi:10.1016/j.tws.2017.09.024

Cited by 40 publications

(7 citation statements)

References 21 publications

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“…The reference exterior facade wall has one OSB and one gypsum plasterboard panel as the innermost layer. Notice that these OSB panels are very important in load bearing walls because they give extra resistance to horizontal lateral loads [42]. On the first variation (Value 1), the sheathing panels are composed of two OSBs.…”

Section: Parameters For Sensitivity Analysismentioning

confidence: 99%

Thermal Transmittance of Internal Partition and External Facade LSF Walls: A Parametric Study

2019

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Light steel framed (LSF) construction is becoming widespread as a quick, clean and flexible construction system. However, these LSF elements need to be well designed and protected against undesired thermal bridges caused by the steel high thermal conductivity. To reduce energy consumption in buildings it is necessary to understand how heat transfer happens in all kinds of walls and their configurations, and to adequately reduce the heat loss through them by decreasing its thermal transmittance (U-value). In this work, numerical simulations are performed to assess different setups for two kinds of LSF walls: an interior partition wall and an exterior facade wall. Several parameters were evaluated separately to measure their influence on the wall U-value, and the addition of other elements was tested (e.g., thermal break strips) with the aim of achieving better thermal performances. The simulation modeling of a LSF interior partition with thermal break strips indicated a 24% U-value reduction in comparison with the reference case of using the LSF alone (U = 0.449 W/(m2.K)). However, when the clearance between the steel studs was simulated with only 300 mm there was a 29% increase, due to the increase of steel material within the wall structure. For exterior facade walls (U = 0.276 W/(m2.K)), the model with 80 mm of expanded polystyrene (EPS) in the exterior thermal insulation composite system (ETICS) reduced the thermal transmittance by 19%. Moreover, when the EPS was removed the U-value increased by 79%.

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Section: Parameters For Sensitivity Analysismentioning

confidence: 99%

Thermal Transmittance of Internal Partition and External Facade LSF Walls: A Parametric Study

2019

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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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“…Além do reticulado de perfi s de aço do sistema LSF há outros elementos que o compõem, por exemplo, a fundação, os revestimentos com e sem função estrutural como placas de madeira (PEHLIVAN; BARAN; TOPKAYA, 2018), as placas cimentícias (ABU-HAMD, 2019), as placas de aço corrugado e as de gesso acartonado (FENG et al, 2020), as instalações hidráulicas e elétricas bem como os isolamentos termoacústicos. Essas placas são denominadas de "placas de cisalhamento" e são responsáveis pela resistência de grande parcela dos esforços horizontais (HENRIQUES et al, 2017), sendo o conhecimento de suas propriedades mecânicas essencial para determinar o seu comportamento.…”

Section: Introductionunclassified

Sistema Construtivo Light Steel Framing: Avaliação Do Desempenho De Placas De Madeira Reconstituída

et al. 2021

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Levando em conta as ações transversais do sistema construtivo Light Steel Framing (LSF), o desempenho estrutural depende do comportamento ao cisalhamento das chapas de fechamento das paredes, em função dos módulos de elasticidade e de deformação transversal, entre outros fatores. Assim, o objetivo deste trabalho foi determinar o módulo de elasticidade nas direções longitudinal e transversal, das chapas de fechamento em compensado estrutural, por meio de ensaios à flexão estática em três pontos, nos quais foram seguidas as prescrições da NBR 9533 (ABNT, 2012), e compará-lo com resultados de pesquisas similares que usaram chapas Oriented Strand Board (OSB) no contraventamento do sistema LSF. Após análise dos resultados dos valores obtidos dos módulos de elasticidade em pesquisas que foram utilizadas chapas de OSB, e comparados com os resultados da presente pesquisa concluiu-se que é possível utilizar o compensado estrutural no sistema construtivo LSF destacando-se inclusive um desempenho superior.

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Structural performance of light steel framing panels using screw connections subjected to lateral loading

Cited by 40 publications

References 21 publications

Thermal Transmittance of Internal Partition and External Facade LSF Walls: A Parametric Study

Thermal Transmittance of Internal Partition and External Facade LSF Walls: A Parametric Study

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

Sistema Construtivo Light Steel Framing: Avaliação Do Desempenho De Placas De Madeira Reconstituída

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