Experimental and numerical investigations on flexural behaviour of CFRP reinforced concrete-filled stainless steel CHS tubes

Literature Review: Concrete Filled Steel Tubes Under Transverse Impact Loading

“…Finally, Zhao et al [166] has found that (1) the plateau impact force decreases as the ratio of hollow steel tube and level of axial load increases, (2) as the level of axial load and impact load increases, the residual deflection in mid-span of the specimens increases,…”

“…(2) by applying more CFRP reinforcement layers on the tested specimens, the ultimate strength increases and (3) by filling the circular hollow section (CHS) stainless steel tubes with concrete, the flexural stiffness and strength is improved. Zhao et al [166] performed experimental and numerical simulations on the impact load behavior of circular concrete filled double skin tube members using external stainless-steel tube and internal carbon steel tube.…”

“…For instance, height of impact load, ratio of hollow steel tube and magnitude of axial load). Besides, Figure 32 displays the Schematic sketch of the experimental setup and circular cross section of the CFSDST structural member by Zhao et al [166]. After testing the specimens, the results were gathered including failure modes, mid-span deflection, impact load time histories and strain in stainless steel.…”

“…Zhao et al [166] has used ABAQUS commercial version to model Concrete Filled Double Skin Steel Tubes (CFDST) subjected to transverse impact loading on the mid-span of the specimens as shown in Figure 51. Besides, the meshes and elements properties of the numerical model are listed below:…”

“…As can be seen from Figure 65, Zhao et al [166] did a comparison between failure modes for specimens with different hollowness ratios (Ψ) and different drop heights. Moreover, a total of eighteen CFDST specimens were subjected to transverse impact loading with the below characteristics:…”