EXPERIMENTAL STUDY ON BENDING BEHAVIOUR OF TRIANGULAR WEB PROFILE STEEL BEAM SECTION

Abstract

A triangular web profile (T RI WP) steel section is a section made of two flanges connected to a slender web. The web and the flanges can be produced from different steel grades depending on design requirements. The flanges width and thickness is determined based on the depth of the section. The web is corrugated at regular interval into triangular shape along the length of the beam. This paper describes an experimental study on the bending behavior in major (I x) and minor (I y) axes of Triangular Web Profile (T RI WP) compared to flat web (FW) steel sections. Two types of sizing involved which is 200×100×6×3mm and 180×75×5×2mm section. Each of beam section was modeled using several spans such as 3m, 4m and 4.8m. It was observed that the T RI WP section had a higher stiffness about minor axis compared to that of FW steel section but has lower stiffness about major axis. The analyses results show that the flexural stiffness for T RI WP1 is 0.794 times the I x of the flat web steel section (FW1). Meanwhile, the flexural stiffness for T RI WP1 is 1.429 times the I y of the flat web steel section (FW1). The findings for section T RI WP2 found to be similar to that of T RI WP1. For the section T RI WP2, it was observed that the value of I x of T RI WP is 0.780 times the I x of FW steel section which is less than that of FW. The I y of T RI WP is 1.393 times the I y of FW steel section which is more than that of FW steel section.