Title:
Performance of Steel Fiber-Reinforced Concrete (SFRC) Coupling Beams Under Simulated Wind Loading
Author(s):
Muhammad Bajwa
Publication:
Web Session
Volume:
ws_S23_MohammadBajwa.pdf
Issue:
Appears on pages(s):
Keywords:
DOI:
Date:
4/2/2023
Abstract:
Performance-based wind design of structures has attracted increasing attention in the past few years, where some degree of inelastic deformations is allowed during severe wind loading. In this study, the behavior of steel fiber-reinforced concrete coupling beams subjected to moderate inelastic deformations induced by wind loading was evaluated. The use of fibers in volume fractions of either 0.5% or 0.65% was evaluated to simplify beam reinforcement detailing and increasing shear strength. Four large-scale coupling beams were tested under a simulated wind loading regime that included over 2000 loading cycles (see figures for wind loading protocol and test setup). Target peak shear stress was either 15vf'c or 10vf'c, psi. Steel fibers consisted of 2.4 in. long and 0.035 in. diameter double-hook fibers with a tensile strength of 330 ksi. All four test beams performed well, with good stiffness retention capacity and minor residual cracks widths at the end of the tests.