Hysteretic Behavior of Concrete-Filled Double-Layer Steel Tubular Column under High Axial Load

摘要

The experimental results of the proposed circular CFDLTcolumn and the conventional circular CFDST columnspecimens under the reversed cyclic lateral force and constantaxial force ratio at 0.5 lead to the following conclusions:(1) The progress of axial compressive strain of the proposedcircular CFDLT column is remarkably slower than that of theconventional circular CFDST column.(2) The lateral force of the proposed circular CFDLT columndecreases more slowly than that of the conventional circularCFDST column.