Post-cracking Poisson Ratio of Concrete in Steel-Concrete-Steel Panels Subjected to Biaxial Tension Compression

Abstract

Consideration of post-cracking Poisson ratio of concrete is found significant in predicting the behavior of Steel-Concrete-Steel (SCS) panels under biaxial tension compression. Concrete reinforced with face steel plates was found to be under confinement which deviates the established nature of the post-cracking Poisson ratio. In order to account for such confinement, an extension to previously proposed expression for the Poisson effect in reinforced concrete (RC) is presented in this paper to be used for the analysis of SCS in which the reinforcing elements, steel plates, provide confinement in the principle tensile direction. A tri-linear model is proposed for the Poisson ratio and then compared with the experimental results.