Study on Structural Performance of Steel Concrete Composite Columns using Fiber Reinforced Concrete

混凝土外包钢结构体系是由纤维混凝土(FRC)和外包钢组成的一种新型组合结构体系。本文讨论了如何评估CES柱的极限抗剪强度。试验结果表明，型钢混凝土结构的AIJ设计公式不能用于评估CES柱的极限强度。提出了改进的CES柱极限抗剪强度计算公式。

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. This paper discusses how to evaluate the ultimate shear strength of CES columns. It is revealed based on the test results that the AIJ design formulas for SRC structures cannot be applied for evaluating the ultimate strengths of CES columns. Improved design formulas to estimate the ultimate shear strength are proposed for CES columns.