Snapback failure analysis for large scale concrete structures and its application to shear capacity study of columns

Abstract

A comprehensive failure analysis method for large-scale concrete structures is presented, which includes snap-back failure. Energy observation is used to describe the macroscopic mechanism of snapback occurrences and other softening failure modes. The typical snapback failures of beams and columns by shear are numerically obtained using the arc length method with selected displacement control points. The fundamental understanding of the phenomena is extended to the failure mechanism of a column where shear capacity is affected by axial force.