IJSTE - International Journal of Science Technology & Engineering | Volume 3 | Issue 09 | March 2017 ISSN (online): 2349-784X
Review on Study of Castellated Beam with &without Stiffeners Miss. Pooja P. Rugge ME Student Department of Civil Engineering ICOER, Wagholi, Pune
Prof. Pallavi K. Pasnur Assistant Professor Department of Civil Engineering ICOER, Wagholi, Pune
Abstract Now a day’s use of castellated beam is become very popular due to its advantageous structural applications. Fabrication of Castellated beam are done by cutting in its web of hot rolled steel (HRS) I section into zigzag pattern & after that the cutting portion are rejoining it over another. By rejoining the cutting portion over one another the depth of the beam is also increases. The openings provided in the web portion is generally circular, hexagonal, diamond or sinusoidal in shape. The load carrying capacity of the castellated beam is increased by increasing the depth of the beam. There are no of modes of failures in the castellated beam due to its increase in depth like lateral torsional buckling, formation of vierendeel mechanism, rupture of welded joint in a web post & shear buckling of web post which needs to take care of. Therefore for minimizing these failures modes study is carried out which shows that use of stiffeners in web portion is important. The literature survey shows that the use of stiffeners in the web portion of castellated beam minimizing the deflection in that portion & also increasing the strength. Review papers are suggested that using stiffeners along the transvers direction reduces the stress concentration near openings. Keywords: Castellated beam, Circular web opening, Hexagonal web opening, finite element analysis, Stiffeners ________________________________________________________________________________________________________ I.
INTRODUCTION
Castellated beam is also called as perforated web. The main objective of perforated web is to increase the moment of inertia which increases by increasing the depth of section. From many years the castellated beam have been used. In 1950s due to cheap labour cost the castellated beam were firstly used in Europe. The most important advantages of castellated beam is to improve strength due to increased depth of the section without any additional weight. Castellated beams are light in weight & strong. They are cheap. They are easy to assemble at the construction site. Castellated beam:
Fig. 1: Castellated beam with different shaped opening.
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