Numerical simulation of UHPC filled tube columns against blast loads

Abstract

During the past decades, the use of concrete filled double skin steel tube (CFDST) members has gained much attention in the construction industry due to its beneficial properties such as light weight, high strength and excellent ductility. Many studies have discussed the behaviour of normal strength concrete filled CFDST member under a variety of load conditions; however, the knowledge of UHPC filled CFDST member is relatively lacking. This paper presents a numerical study on the ultra-high performance concrete filled double-skin tubes subjected to blast loading. Numerical models were developed in LS-DYNA and then validated against recently obtained experimental data.