Flexural Design Procedures for UHPC Beams and Slabs

Abstract

Abstract:Analytical solutions are developed for deflection calculations of determinate beams subjected to usual loading patterns. The solutions are based on a bilinear moment curvature response characterized by the flexural crack initiation and ultimate capacity based on a deflection hardening behavior. Equations for deflection distribution along the full length of a beam are presented for multiple cases including three-and four-point bending, which can be further extended to uniform load, concentrated moment, and cantilever beams. The proposed equations are capable of tracking the curvature, angle of rotation and deflection at any point along the beam as serviceability based design approach. A parametric study is conducted to examine the effects of moment and curvature at the ultimate stage to moment and curvature at the first crack ratios on the deflection. Results are examined for UHPC beams with different reinforcement types and test configurations. The accuracy of the present model is successfully verified.

Flexural Design and Analysis of Composite Beams with Inverted‐T Steel Girder with Ultrahigh Performance Concrete Slab

“…Composite structures are probably the most appropriate application enabling to take full advantage of the outstanding properties of UHPC, and various solutions combining a UHPC slab and a steel girder were successfully developed [5,6]. In addition, numerical expression for flexure of UHPC beam has been successfully derived by the strain compatibility relation [7].…”