Analysis of the Ultimate Load-Bearing Capacity of Steel-Clad Concrete-Filled Steel Tube Arched Protective Doors under Blast Shock Waves

The mechanism of blast damage to steel-clad concrete-filled steel tube (SCCFST) arched protective doors is studied using the dynamic response characteristics such loads under action shock wave loads, and ultimate load-bearing capacity formula derived based on “plastic hinge” mode limit analysis, which explores effect wave. design parameters each component door subjected waves discussed. Results show that a uniform radial load outer surface SCCFST characterized by plastic hinge lines at two arch feet, results in slip fracture renders unstable. depends coordinated functioning cross-sectional cladding plate inner connecting partition, tube, restraining concrete outside tube. three parts differs with varying occupancies.