Buckling of concrete panels under biaxial compression according to rheological-dynamical theory

Abstract

This paper is concerned with experimental verification of inelastic buckling and failure analysis of concrete panels according to rheological dynamical theory (RDT). Iterative modulus calculation of buckling stress is presented and verified for concrete panels under biaxial and axial compression. For biaxial compression, three different concrete mixtures with two stress ratios are considered. Some experimental results from literature are also used to verify RDT calculation for concrete panels under axial compression as well as analytical expressions for concrete wall panel in two-way action. Besides normal concrete strength, this calculation can be used for fibre-reinforced ultra-high performance concrete UHPC. The calculation according to RDT had shown that the values of material parameters of such modulus of elasticity and Poisson's ratio have a significant influence on the structural material constant as well as buckling stress results. The calculation of buckling stress which is necessary for RDT calculation was carried out using the corresponding model in Abaqus software.

Keywords

• rheological-gynamical theory
• concrete panels
• buckling analysis
• biaxial compression of concrete
• stability of concrete panels