Structural performance of steel beams and frames with slant end-plate connections at elevated temperature

Zahmatkesh, Farshad; Osman, Muhammad Khusairi; Talebi, Elnaz; Kueh, Ahmad Beng Hong; Tahir, Mahmood Md.

doi:10.1016/j.engstruct.2019.02.059

Cited by 6 publications

(4 citation statements)

References 14 publications

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“…In this type of contact model, the surfaces are allowed to slide across each other in the tangential direction. According to the previous studies, a range of 0.25–0.44 is considered for the friction coefficient of steel-steel contacts at high temperatures (El Kalash and Hantouche, 2017; Sarraj et al ., 2007; Haremza et al ., 2016; Pakala et al ., 2012; Zahmatkesh et al ., 2019; Eslami et al ., 2018; Dai et al ., 2010; Chen and Wang, 2012; Elsawaf and Wang, 2013; Wang and Wang, 2013; Kodur et al ., 2013; Xie et al ., 2018; Li et al ., 2020; Kalogeropoulos et al ., 2012; Qiang et al ., 2014). So, the “penalty” method and Coulomb's frictional law with a constant friction coefficient of 0.3 were applied to the model to obtain the frictional forces between the angels, column and beam.…”

Section: Finite Element Modelmentioning

confidence: 99%

“…The behavior of steel connections in fire conditions is significantly influenced by interactions between connected constructional members, along with the thermal and mechanical properties of the joint components, structural continuity and nature of fire (Pakala and Kodur, 2016; Zahmatkesh et al ., 2019; Pournaghshband et al ., 2019; Mahamid et al ., 2019; Suman and Samanta, 2021). Therefore, when the isolated connections are considered in research, the effects of the temperature variation on the connection forces, and large deformation in the connected beam are ignored (Bailey et al ., 1996; Yahyai and Rezaeian, 2015; Eslami et al ., 2018; Rezaeian and Eghbali, 2021).…”

Section: Introductionmentioning

confidence: 99%

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Performance of steel beam with welded top-seat angle connections at elevated temperatures

Rezaeian

Mansoori

Khajehdezfuly

2023

JSFE

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PurposeTop-seat angle connection is known as one of the usual uncomplicated beam-to-column joints used in steel structures. This article investigates the fire performance of welded top-seat angle connections.Design/methodology/approachA finite element (FE) model, including nonlinear contact interactions, high-temperature properties of steel, and material and geometric nonlinearities was created for accomplishing the fire performance analysis. The FE model was verified by comparing its simulation results with test data. Using the verified model, 24 steel-framed top-seat angle connection assemblies are modeled. Parametric studies were performed employing the verified FE model to study the influence of critical factors on the performance of steel beams and their welded angle joints.FindingsThe results obtained from the parametric studies illustrate that decreasing the gap size and the top angle size and increasing the top angles thickness affect fire behavior of top-seat angle joints and decrease the beam deflection by about 16% at temperatures beyond 570 °C. Also, the fire-resistance rating of the beam with seat angle stiffener increases about 15%, compared to those with and without the web stiffener. The failure of the beam happens when the deflections become more than span/30 at temperatures beyond 576 °C. Results also show that load type, load ratio and axial stiffness levels significantly control the fire performance of the beam with top-seat angle connections in semi-rigid steel frames.Originality/valueDevelopment of design methodologies for these joints and connected beam in fire conditions is delayed by current building codes due to the lack of adequate understanding of fire behavior of steel beams with welded top-seat angle connections.

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Section: Finite Element Modelmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Performance of steel beam with welded top-seat angle connections at elevated temperatures

Rezaeian

Mansoori

Khajehdezfuly

2023

JSFE

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“…The model is exposed to a temperature increase of 100 °C. 8-node linear brick elements with incompatible modes (C3D8I elements) are employed as it has been noticed that the incompatible states formulated for this element exhibit better flexural response, thus requiring lesser mesh to reach convergence versus a normal mode linear solid element [ [23] , [24] , [25] , [26] ]. There are 64 elements in every flat rhombus and sloping region.…”

Section: Analytical and Numerical Computational Modelsmentioning

confidence: 99%

Thermally-induced responses of triaxially woven fabric composites

Kueh

2023

Heliyon

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“…A numerical model was developed, allowing for the evaluation of the contact load-carrying capacity at temperatures up to 900°C. In the study [8], the behaviour of a bolted end-plate joint with a diagonal plate was examined, showing its higher resistance to elevated temperatures compared to the traditional contact with vertical plate.…”

Section: Introductionmentioning

confidence: 99%

Analysis of the Load-Carrying Capacity of a Bolted Connection Between a Steel Floor Beam and a Column

Kasza¹,

Nawrot²

2021

Zeszyty Naukowe Politechniki Częstochowskiej. Budownictwo

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The paper analyses the load-carrying capacity of a bolted overlapping connection between a floor beam and a column. Three variants of the connection were considered: without the support seat and with support in the form of an angle bracket and a plate. The value of force acting on the connection was determined based on calculations made for the adopted conditions. The load-carrying capacity of bolts and plates for the assumed load was evaluated and the values of stress in the contact zone were compared for the analysed cases. It was demonstrated that the load-carrying capacity of bolted overlapping connections of the beam/column type depends on the adopted solution in terms of contact shape (presence or absence of a support seat), the type of support seat (if any) and the number, class and spacing of bolts. The results of the calculations showed that the most effective method of connection for the adopted assumptions is the connection with the support seat capital in the form of an angle bracket. The use of this type of beam support significantly reduces bolt tension and reduces the stresses occurring in the contact zone of the connected elements.

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Structural performance of steel beams and frames with slant end-plate connections at elevated temperature

Cited by 6 publications

References 14 publications

Performance of steel beam with welded top-seat angle connections at elevated temperatures

Performance of steel beam with welded top-seat angle connections at elevated temperatures

Thermally-induced responses of triaxially woven fabric composites

Analysis of the Load-Carrying Capacity of a Bolted Connection Between a Steel Floor Beam and a Column

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