Modeling of composite beam–column flexible endplate joints at elevated temperature

Al‐Jabri, Khalifa; Pillay, Prashob; Waris, Muhammad Bilal; Pervez, Tasneem

doi:10.1016/j.compstruct.2016.01.069

Cited by 8 publications

(3 citation statements)

References 20 publications

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“…A general contact procedure is selected with a HARD contact property specified in the normal direction to define the interaction at the interface between the steel beam and the concrete slab. The PENALTY approach with a friction coefficient of 0.1 is used for the tangential response, which was referenced from the study of Al-Jabri et al [23]. A sensitivity analysis was done by Dai et al [24] revealed that using a wide range of friction coefficient values had no impact on the simulation results.…”

Section: Contact and Constraint Conditionsmentioning

confidence: 99%

Numerical Analysis and Evaluation of Effective Slab Width of Composite Continuous Beams With Semi-Rigid Joint

2021

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The characterization of the structural behavior of composite beams is directly affected by the determination of the effective slab width. Various codes propose their own definitions of the effective width based on the beam span and the slab width parameters. However, the evaluation of the effective width may be influenced by other parameters. The aim of this work is to determine the most important factors affecting effective width for continuous composite beams with semi-rigid joints using numerical simulations. A three-dimensional finite element model of a composite continuous beam using explicit-solver available in ABAQUS is developed. The proposed model is validated through comparisons to available experimental results. A modified model is proposed based on the so-validated model to study the influence of the composite beam-column joint stiffness on the effective width. Then, both numerical models are used to perform an extensive parametric study to investigate the influence of various parameters on the estimation of the effective slab width. The influence of slab width, the shear connection degree, and composite joint stiffness are particularly analyzed to find out the most important parameters influencing the effective width so that simplified equations for the calculation of the effective slab width are proposed.

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Section: Contact and Constraint Conditionsmentioning

confidence: 99%

Numerical Analysis and Evaluation of Effective Slab Width of Composite Continuous Beams With Semi-Rigid Joint

2021

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“…[3][4][5][6][7] With respect to the importance of this issue and limitations in experimental studies, the researchers have proposed various numerical methods to evaluate fire behavior of the structures such as finite element methods (FEMs) [8][9][10][11] and analytical approaches. [12][13][14] On the other hand, computational intelligence is a powerful approach to determine the response values of complex systems. In this respect, metaheuristic algorithms are one of the most important methods to solve complex numerical problems in structural fire engineering.…”

Section: Introductionmentioning

confidence: 99%

Fire response of steel connections using gene expression programming and finite element method

Ketabdari

Daryan

Hassani

et al. 2021

Structural Design Tall Build

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In this paper, the behavior of bolted and welded beam-to-column connections exposed to high temperatures is investigated. In this regard, 16 effective parameters are considered as the inputs, along with the connection rotation as the output. Finite element models of bolted and welded connections have been verified and used to generate sufficient data for equation training by the gene expression programming (GEP) method. The results indicated that the relative error of the bolted and welded models is equal to 11% and 12.5%, and R 2 coefficients were 0.9 and 0.85, respectively. Comparing the results acquired from the GEP model and experimental tests approves a proper performance with an acceptable rate of error of the developed equations for both bolted and welded connections in fire conditions. This performance has adequate reliability, particularly in critical temperatures, where the connection failure occurs. Moreover, the development of formulas with such a degree of accuracy indicates the utmost importance of employing applicable algorithms in simulating complex interaction of structure and fire.

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“…Experimental results showed that the bolted connections had superior seismic resistance in stiffness, strength, ductility, and energy dissipation mechanisms. From the domestic and foreign researches [4][5][6][7][8][9][10][11][12], it can be found that the end plate bolt connection applied in steel structure and composite structure has better seismic performance. At present, the researches on the application of end plate bolt connection in concrete structure are less, so the research of seismic performance for such node has practical significance.…”

Section: Introductionmentioning

confidence: 99%

Experimental Research on Seismic Performance of a New-Type of R/C Beam-Column Joints with End Plates

Jiang

et al. 2017

Shock and Vibration

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This paper presents a new-type of fabricated beam-column connections with end plates. The joint details are as follows: the concrete beams are connected to column by end plates and six high strength long bolts passing through the core area. In addition, in order to increase the stiffness and shear strength, stirrups are replaced by the steel plate hoop in the core zone. To examine the fail behavior of the fabricated beam-column connection specimens, a quasi-static test is conducted for nine full-scale models to obtain the hysteresis curves, skeleton curves, ductility, energy dissipation capacity, and other seismic indicators. The experimental results show that all specimens failed in bending in a malleable way with a beam plastic hinge and the hysteresis curves are excellently plump for the end plate connections. From the seismic indexes, the fabricated connection specimens exhibit better seismic performance, which can provide reference for the application of prefabricated frame structure in the earthquake area.

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Modeling of composite beam–column flexible endplate joints at elevated temperature

Cited by 8 publications

References 20 publications

Numerical Analysis and Evaluation of Effective Slab Width of Composite Continuous Beams With Semi-Rigid Joint

Numerical Analysis and Evaluation of Effective Slab Width of Composite Continuous Beams With Semi-Rigid Joint

Fire response of steel connections using gene expression programming and finite element method

Experimental Research on Seismic Performance of a New-Type of R/C Beam-Column Joints with End Plates

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