Composite steel/concrete beams may buckle in hogging bending regions. As the top flange of I-beam in that arrangement is restricted from any translational deformation and twist, the web will distort during buckling presenting a phenomenon often described as restricted distortional buckling. There are limited studies available in the literature of restricted distortional buckling of composite st...

Cold-formed steel unlipped channel sections are commonly used as bearers in floor systems. The loads from the joists transferred through flanges or webs of section and not their shear centre. Therefore, subjected to combined bending torsion, resulting reduced capacity. This research study has thus investigated behaviour thick under torsion using validated finite element models beams with an ecc...

Few studies have investigated the structural behavior of steel-concrete composite alveolar beams in hogging bending regions. Their resistance can be reached by lateral distortional buckling (LDB), coupling LDB and local failure modes, or limit states cracking crushing concrete slab. This case is characteristic continuous cantilever elements. Another critical issue that design calculation recomm...

The main idea of castellated steel beams is to reduce their weight by creating void space (web holes) in the beam body. This structure tends exhibit superior properties such as advanced strength, lightweight, and cost-saving compared amount used with reference without web holes. study devoted investigating structural behavior double-channel cast beams. In this project, two pieces a rolled hot c...

This paper presents a new theory for the lateral buckling of web-tapered I-beams. Linear analysis is first conducted by taking account into the tapering effects of web-tapered I-beams, where the deformation compatibilities of the two flanges and web are considered in terms of the basic assumptions of thin-walled members. Subsequently, the total potential for the lateral buckling analysis of web...

As is well known, in the current design codes, shear strength of beams calculated based on modified truss theory, which does not consider effects flange area T-beams. The main objective this paper was to gain a better understanding and enhance experimental database behavior RC T-beams illustrate contribution capacity To accomplish aim, specially designed program executed, its test results were ...

Castellated beams are generally provided with hexagonal and circular openings in the web portion. However, in view of structural applications, appropriate size and shape of openings in web are always a major issue of concern. Research work carried out in optimizing sizes of castellated beam with hexagonal openings have reported that castellated beams fail mainly by local failure modes and stres...