The Effect of Axial Force on the Behavior of Bolted flush End-plate single-sided beam-to-column moment connections


Abstract in English

Flush end-plate beam-to-column joints often subjected to a combination of bending and axial forces .The level of axial forces in the joint may be significant in case of: sway frames under horizontal loads, pitched roof portal frames and irregular frames.. Many of design codes neglect the effect of axial force in the connection analysis as it is usually low. Eurocode 3 limits the axial force acting on the joint to 10% of the design plastic resistance of the connected member cross section to apply component method. The objective of this paper is to discuss the behavior of flushend-plate connections under a combination of bending and axial tension or compression forces For the nonlinear finite element analysis the modeling process was carried out using CATIA computer program. The results of the finite element analysis of the connection showed that by applying the tensile axial load of the beam into the connection, the ultimate bending capacity of the connection will decrease. On the other hand, by applying compressive axial load of the beam to the connection, the ultimate bending capacity of the connection will increase at first; but after the buckling of the compressive flange of the beam takes place, the total capacity of the connection tends to decrease.

References used

Pertold, J. R. Embedded steel column bases I. Experiments and numerical simulation. Journal of Constructional Steel Research,France,18,2000, 56-77
da Silva, L., Lima, L., Vellasco, P. Behaviour of flush end-plate beam to column joints under bending and axial force.4, Journal of Steel Composite Structures ,Portugal,2004,77-94
Gang Shi,Y,M. Finite element analysis of beam-column bolted end-plate connections in steel frames.8, Department of Civil Engineering, China, 2007,88-99

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