STUDY ON COMPRESSIVE STRENGTH OF PULTRUDED HYBRID FRP ANGLE SECTION

Abstract

 This study conducted compression tests and numerical analyses of pultruded hybrid FRP angle section which has been developed to be used for replacement member and reinforcement member for corroded steel bridges, in order to understand global and local buckling characteristics and to obtain compressive strength data. As a result, the angle section with a large slenderness ratio when the rotation around the strong axis is free shows a flexural-torsional buckling mode with a twisting of section, and compressive strength of flexural-torsional buckling is closer to the flexural buckling strength about the weak axis than that about the strong axis. Since the angle section with a small slenderness ratio is controlled by the local buckling, the compressive strength of the angle section in this study may be determined based on the local buckling strength and the global buckling strength about the weak axis.