Research Articles | Challenge Journal of Structural Mechanics

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

Adem Karasu, Cüneyt Vatansever, Haluk Emre Alçiçek



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.


header end-plates; semi-rigid connections; finite element models; moment-rotation relations

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Abdalla KM, Chen WF (1995). Expanded database of semi-rigid steel connections. Computers and Structures, 56(4), 553–564.

Aggarwal AK (1990). Behaviour of flexible end plate beam-to-column joints. Journal of Constructional Steel Research, 16, 111–134.

Chen W, Kishi N, Komuro M (2011). Semi-Rigid Connections Handbook. J. Ross Publishing, USA.

Faella C, Piluso V, Rizzano G (1999). Structural Steel Semirigid Connections. CRC Press LLC, USA.

Hongxia Y, Burgess IW, Davison JB, Plank RJ (2007). Numerical simulation of bolted steel connections in fire using explicit dynamic analysis. Journal of Constructional Steel Research, 64(5), 515-525.

Jaspart, JP, Demonceau, JF (2008). European design recommendations for simple joints in steel structures. European Convention for Constructional Steelwork.

Ismail RES, Fahmy AS, Khalifa AM, Mohamed YM (2016). Numerical study on ultimate behavior of bolted end-plate steel connections. Latin American Journal of Solids and Structures, 13(1), 1–22.

Karasu A, Vatansever C (2017). Nonlinear behavior of header end-plate connections under increasing monotonic loading. 7th international symposium on steel structures, Gaziantep, Turkey. (in Turkish)

Kaufmann EJ, Metrovich B, Pense AW (2001). Characterization of Cyclic Inelastic Strain Behavior On Properties of A572 Gr. 50 and A913 Gr. 50 Rolled Sections. ATLSS Report No 01-13, Lehigh University, Bethlehem, USA.

Pilgr DM (2009). Experimental verification of actual behavior of header plate connections. The Nordic Steel Construction Conference.

Sommer WH (1969). Behaviour of Welded Header Plate Connections. Master’s thesis, University of Toronto, Toronto, Canada.

TCDCSS (2016). Turkish code for design and construction of steel structures 2016, Ministry of Environment and Urbanisation, Ankara, Turkey.


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