سال انتشار: ۱۳۹۱
محل انتشار: کنفرانس بین المللی مدل سازی غیر خطی و بهینه سازی
تعداد صفحات: ۱۰
Mehdi Ghassemieh – School of Civil Engineering, University of Tehran
Mahmoud Baei – School of Civil Engineering, University of Tehran
Alireza Goudarzi –
Steel beam-to-column joints are often subjected to a combination of bending and axial forces. The level of axial forces in the joint may be significant, typical of pitched-roofportal frames, sway frames or frames with incomplete floors. An approach, based on finite element modelling, is presented in order to numerically investigate the seismicperformance of bolted steel end-plate moment connection by including the effect of axialforces in the connection. Current specifications for steel joints do not take into account thepresence of axial forces (tension and/or compression) in the joints. A single empiricallimitation of 10% of the beam’s plastic axial capacity is the only enforced provision in Annex J of Eurocode 3.The methods for applying loads to the connection were considered to be only monotonic loadings. For the nonlinear finite element analysis the modellingprocess was carried out using ABAQUS 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. Finally, it reveals that the presence of an axial force on the beam significantly modifies the joint response.