Behaviour and analysis of concrete-filled rectangular hollow sections subject to blast loading

Literature Review: Concrete Filled Steel Tubes Under Transverse Impact Loading

“…On the other hand, the outer steel tubes did not experience any damage after the blast load. This mechanism was justified by Li et al [185] due to the low energy absorption rate of the concrete core during blast loading. Zhang et al [186] has investigated numerically the blast load behavior of CFST segmental columns.…”

“…While the unfilled rectangular hollow steel tubes had local buckling and high plastic rotation capacity. Li et al [185] conducted experimental and numerical simulations on circular sectioned concrete-filled double-skin steel tube columns (CFDST) to investigate their response after exposed to close-in blast loading. Furthermore, the experimentally tested samples have suffered from major damages in the concrete core.…”

Applicability of Yielding–Resisting Sand Column and Three-Dimensional Coordination Support in Stopes

“…In this support, the inner concrete can prevent or delay the local bucking of the steel tube, and the steel tube can provide a confining effect on the concrete to enhance its strength and deformation ability. A number of experimental and analytical studies have been conducted on concrete-filled steel tubular columns [18,19,20,21,22,23,24,25,26]. Lee et al focused on the evaluation of the axial load-carrying capacity of rectangular concrete-filled steel tubular columns with a high-strength steel slender section and the experimental and numerical results showed that the steel peak stress was affected by the lateral expansion of the crushed concrete [24].…”

“…Lee et al focused on the evaluation of the axial load-carrying capacity of rectangular concrete-filled steel tubular columns with a high-strength steel slender section and the experimental and numerical results showed that the steel peak stress was affected by the lateral expansion of the crushed concrete [24]. Hu et al devised an innovative test method to directly measure the load components of square concrete-filled steel tubular columns under axial compression and developed the existing stress-strain models [25]. Chang et al presented a numerical study on the mechanical performance of concrete-filled steel tubular support and the numerical results showed that the interface behaviors of concrete-filled steel tubular support had an important influence on its mechanical performance and the friction coefficient of 0.4 was proposed [26].…”

“…Chang et al presented a numerical study on the mechanical performance of concrete-filled steel tubular support and the numerical results showed that the interface behaviors of concrete-filled steel tubular support had an important influence on its mechanical performance and the friction coefficient of 0.4 was proposed [26]. Many experts have studied the mechanism and application of the concrete-filled steel tubular supports in deep and high-stress roadways, but its non-recyclable characteristics have limited its development to a certain extent [25,26].…”