Journals Proceedings

Abstract

Steel beams with corrugated webs (CWSBs) have been shown theoretically and experimentally to have higher shear strength than beams with straight webs. A new formula is proposed to determine the shear strength of any trapezoidal CWSB based on its dimensions and material properties. The formula is numerically derived from the results of eight different experimental studies on the shear strength of trapezoidal CWSBs using multiple regression analysis (MRA). A set of eight trapezoidal CWSBs with three different web depths, two different web thicknesses, and two different angles of corrugation is fabricated. The beams were instrumented and tested to failure under center point load in simply supported configuration. The results showed that the failure mode was primarily due to web bucking way before material yielding which indicates that geometry of the corrugation plays a major role in the beam behavior. The new proposed formula is found to be in good agreement with the test results; the average ratio between the predicted and experimental shear capacities is found to be 1.06.