Numerical Study on Ultimate Behaviour of Bolted End-Plate Steel Connections

Ismail, Raafat Elsyed Shaker; Fahmy, Ahmed S.; Khalifa, Ayman M.; Mohamed, Yosra Magdy

doi:10.1590/1679-78251579

Cited by 31 publications

(18 citation statements)

References 22 publications

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“…The results of the research showed that the presence of axial force affects the connection performance, so that the presence of the tensile force reduces the final bending strength of the joint. Ismail et al In 2016 [8] examined the final performance of the end-plate steel connections. The results show that the non-stiffening model with flush end plate has a much lower bending strength than other models, and with increasing stiffening angle, the bending strength of the connection also increases.…”

Section: Ii-previous Researchmentioning

confidence: 99%

Evaluation of Cycle Performance of End-Plate Bolt Connections Based on Connection parameters

Ekhlasi¹,

Saberi²,

Saberi³

2020

IJIES

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The precise study of connections performance in a steel structure is important. End plate connections are commonly used in steel structures. In this research, the cyclic behavior of cantilever beam connection to the endplate column under cyclic loading has been evaluated. In the calculations, all of the parameters affecting the behavior of this connection have been investigated and solutions are proposed to reach the maximum connection capacity. Two general models of connecting beams to different columns have been considered for the research with beams of 30 and 40 centimeters depth. The end plate thickness, end plate shape, column thickness, strength or the material of the bolt, necessity of using the continuity plate, double and gusset plate, are the parameters that were considered in the analyzes. According to the results of this study, the use of a thin end-plate causes localized buckling in the plate. The use of continuity plates is very important and prevents local buckling in the panel zone. It is also necessary to use a double plate if the column web is thin. Also, the use of gussets improves the flexural strength of the section.

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Section: Ii-previous Researchmentioning

confidence: 99%

Evaluation of Cycle Performance of End-Plate Bolt Connections Based on Connection parameters

Ekhlasi¹,

Saberi²,

Saberi³

2020

IJIES

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“…The model includes material and geometrical nonlinearities. Initial imperfection corresponding to appropriate buckling mode associated with the loading has also been accounted for with the scale value of LBEAM/1000 (Ismail et al, 2016). Linear eigenvalue analysis is used to estimate the suitable buckling mode.…”

Section: Verification Of Finite Element (Fe) Modellingmentioning

confidence: 99%

“…The second one is tangential behavior of the contact. In this definition, friction between the contact surfaces at the connection is modelled using the classical Coulomb model where the friction Column Stiffener t=6mm coefficient is 0.30 (Ismail et al, 2016) by using penalty stiffness formulation. It is also allowed to small sliding effects at the interface of the contact surfaces.…”

Section: Contact Interaction Propertiesmentioning

confidence: 99%

An investigation of the behavior of header end-plate connections under monotonic loading

Karasu¹,

Vatansever²,

Alçiçek³

2018

CJSMEC

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In seismically active regions such as Turkey, the context of the nonlinearity provided by a building is based on the behaviors of structural components; beams, columns and their connections constituting the seismic force resisting system of the structure. Of these members, beam-to-column connections can play a considerably important role even if they have a capability of limited stiffness and flexural strength. Structural steel connections are mainly classified as a pinned or a moment connection. However, some beam-to-column connections having limited stiffness and flexural strength, which are called semi-rigid connections such as header end-plate connections designed so as to transmit only shear forces, can be characterized by moment-rotation relationship. This paper investigates the behavior of header end-plate connections using finite element (FE) modeling. The FE models include material, geometrical and contact nonlinearities. FE modeling technique was first verified through the test results of the experimental research performed by Aggarwal (1990). Then the effect of header end-plate thickness upon moment-rotation relationship was investigated. According to the analyses results, in addition to shear stresses, axial tensile stresses have been observed to occur in the bolts at the tension side and thickness of the header end-plate and beam web play a governing role in the development of initial rotational stiffness and the flexural strength of header end-plate connections.

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“…These connections are prequalified moment connections in the AISC 358 standard [1] for special moment frames (SMFs). BEEP connections are classified in terms of relationship between the moment transmitted by the connection and their rotation in the plane of connection [2]. According to European Standard [3] and many other studies; it can be classified by its rotational stiffness, strength and ductility.…”

Section: Introductionmentioning

confidence: 99%

“…Wang et al [15], presenting a finite element modeling of the seismic behaviors of extended end-plate connection under cyclic loading, found out that by reliable connection of beam to column, the extended end-plate connection can achieve the same ultimate carrying capacity and initial stiffness as the welded connections, but they had different hysteretic curves, degradation developing curves, and fracture tendency. Ismail et al [2] studied the effect of different geometrical parameters on the ultimate behavior of BEEP connection with different bolt diameter, end-plate thickness, column stiffener length, and rib stiffener angle by presenting a 3D finite element model. For the extended end-plate with rib stiffener, by the increase of end-plate thickness, the initial stiffness increased significantly, but with the increase of bolt diameter, its initial stiffness increased slightly.…”

Section: Introductionmentioning

confidence: 99%

Cyclic Behavior of Bolted Extended End-Plate Moment Connections with Different Sizes of End Plate and Bolt Stiffened by a Rib Plate

Haghollahi

Jannesar

2018

CivileJournal

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This paper presents a numerical study on the behavior of prequalified Bolted Extended End Plate (BEEP) moment connections when are affected by cyclic loading. Specimens were six four-bolt extended end-plate connections consist of H-shaped columns and I-shaped beams with different geometry as well as different end-plate size and bolt diameter; three of them were stiffened by a triangular rib plate welded to the top and bottom of the beam flanges, and others remained unstiffened. They were modeled in ABAQUS software and their cyclic behavior was evaluated using finite element analysis. Responses of specimens were examined by presenting their equivalent plastic strain, stress distribution, and moment-rotation hysteretic curves. Results revealed that with the increase of beam height and inertia moment in equal story drift rotations, the reduction of connection strength occurred earlier due to the occurrence of local buckling in the beam web and flange after subjecting to cyclic loading. By comparing moment-rotation hysteretic responses of specimens, it was found out that in unstiffened BEEP connections with thinner end-plate, the use of single vertical rib stiffener can slightly improve their cyclic behavior, but in connections with thicker end plate, it showed no considerable effect. It was concluded that the BEEP connections whose dimensions are not based on the tenth code of the Iranian national building regulations, cannot satisfy the criteria of AISC seismic provisions for both special and intermediate steel moment frames, although they experienced no local beam web and flange buckling.

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Numerical Study on Ultimate Behaviour of Bolted End-Plate Steel Connections

Cited by 31 publications

References 22 publications

Evaluation of Cycle Performance of End-Plate Bolt Connections Based on Connection parameters

Evaluation of Cycle Performance of End-Plate Bolt Connections Based on Connection parameters

An investigation of the behavior of header end-plate connections under monotonic loading

Cyclic Behavior of Bolted Extended End-Plate Moment Connections with Different Sizes of End Plate and Bolt Stiffened by a Rib Plate

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