• Vivek Rajkumar Nandgaonkar
• Dr. Ashay D. Shende
• Er. Mohini R. Kumbhare

Abstract: The growing popularity of castellated beams in various construction projects stems from their ability to offer increased depth without extra weight, a greater ratio of strength to weight, and reduced maintenance costs. Castellated beams are I-sections that have been cut and rejoined in a zigzag pattern to augment their depth. This increase in depth enhances vertical bending stiffness, facilitates service installations, and enhances aesthetic appeal. Fabricating castellated beams involves cutting and rejoining I-sections to create a modified profile that boosts structural performance. However, this modification can introduce new challenges such as web post buckling and lateral torsional buckling under loading conditions. Additional failure modes, including flexure mechanism formation, lateral torsional buckling, vierendeel mechanism formation, welded joint rupture in web posts, and shear buckling of web posts, also need consideration. Research suggests that incorporating stiffeners in the web portion of perforated web can mitigate these failure modes. Therefore, detailed investigations into the optimal number, size, and placement of stiffeners are crucial for optimizing the performance of castellated beams. Current literature underscores that using stiffeners in castellated beam webs not only enhances strength but also minimizes deflection, enhancing overall structural performance.

Castellated beams, Structural modification, Lateral torsional buckling etc.

"Analysis of Castellated Beams With and Without Stiffeners Using ANSYS Software", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.11, Issue 5, page no.b325-b336, May-2024, Available :http://www.jetir.org/papers/JETIR2405143.pdf

"Analysis of Castellated Beams With and Without Stiffeners Using ANSYS Software", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.11, Issue 5, page no. ppb325-b336, May-2024, Available at : http://www.jetir.org/papers/JETIR2405143.pdf