MATEC Web Conf.
Volume 258, 2019International Conference on Sustainable Civil Engineering Structures and Construction Materials (SCESCM 2018)
|Number of page(s)||9|
|Section||Structural Dynamics and Earthquake Engineering, Structures in Severe Environment, Structural Analysis|
|Published online||25 January 2019|
A Study on the Effect of Adjacent Segments of a Steel l-Beam with Lateral Supports on Its Critical Moment
Department of Civil Engineering, Parahyangan Catholic University, Bandung, Indonesia
* Corresponding author: firstname.lastname@example.org
One of the most common failure modes in a steel beam structure is lateral torsional buckling (LTB). The unbraced length of the beam is a crucial factor for LTB analysis. The current formula to calculate the critical moment with respect to LTB analysis has not considered the effect of adjacent segments of steel beams with lateral supports. The adjacent segments of beams actually provide restraints to the torsional rotation while maintaining the possibility of warping to occur. This research was intended to observe the effect of the adjacent segments on its critical moment by using the linear buckling analysis and collapse analysis of a finite-element model. The results from the FEM analysis were compared to the value of the critical moment obtained from the available formula in the standard. The linearised buckling analysis results show an increase in the critical moment by 7.02% to 154.83%, while the collapse analysis results show an increase of 2% to 40.41%. As the adjacent segments becomes longer, the increase is less due to the yielding of adjacent beam segments, contributing less stiflhess to the beam spanning in between lateral supports.
© The Authors, published by EDP Sciences, 2019
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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