INVESTIGATION OF ULTIMATE STRENGTH OF CES COLUMNS CONSIDERING MATERIAL PROPERTIES

Abstract

Concrete Encased Steel (CES) structural system consisting of fiber reinforced concrete (FRC) and encased steels is a new composite structural system proposed by the authors, and is being conducted continuous and comprehensive studies to make it practical. This paper discusses how to evaluate the ultimate strength of CES columns. It is revealed based on the test results that the AIJ design formulas for SRC structures can be applied for evaluating the ultimate strengths of CES columns. Furthermore, improved design formulas to estimate the ultimate strength are proposed for CES columns considering material properties.