BEHAVIOR AND RESISTANT CAPACITY OF HIGH-STRENGTH STEEL CELLULAR BEAMS

• Grant number: 23/12901-4
• Support Opportunities: Scholarships in Brazil - Master
• Start date: May 01, 2024
• End date: August 28, 2025
• Field of knowledge: Engineering - Civil Engineering - Structural Engineering
• Principal Investigator: Silvana de Nardin
• Grantee: Vítor Augusto Pazin
• Host Institution: Centro de Ciências Exatas e de Tecnologia (CCET). Universidade Federal de São Carlos (UFSCAR). São Carlos , SP, Brazil
• Associated scholarship(s): 24/12417-8 - PARAMETRIC AND ANALYTICAL STUDY OF HIGH-STRENGTH STEEL CELLULAR BEAMS, BE.EP.MS

Abstract

Cellular steel beams are characterized by steel profiles with sequential circular openings in the web, resulting in structural elements with greater flexural rigidity, the possibility of covering large spans and construction speed. Studies of this type of beam were limited to common steels grades; In Brazil, studies on cellular beams are scarce and recent. On the other hand, high-strength steels were only evaluated for full-web beams. Thus, the use of high-strength steels, whose yield strength exceeds 460MPa, in cellular beams is a practically unexplored topic to date. The use of high-strength steel adds sustainable aspects due to the reduction of carbon footprints and waste during the manufacturing process. Although the use of high-strength steels in cellular beams seems interesting from a structural and sustainability point of view, such steels are not addressed by ABNT NBR 8800 (2008). The same happens with cellular beams. The present research project aims to evaluate the behavior and resistant capacity of high-strength steel cellular beams in a double-supported configuration, aiming to investigate the influence of variation in steel resistance on failure modes and structural behavior. For this, numerical modeling will be used using the ABAQUS® software. Given the lack of experimental data on cellular beams made of high-strength steel, validation of the numerical model will take place in two stages: considering full-web beams made of high-strength steel and cellular beams made of common steel. It is expected to identify whether the change in steel grade alters the resistant capacity and global behavior of cellular beams.