Abstract
This paper investigates the impact and post-impact behavior of steel-concrete composite (SC) panels. Impact tests were carried out on eight specimens in an instrumented drop hammer rig. The parameters studied in these tests include the impact energy and axial compressive preload prior to impact. Test results such as dynamic response process, impact force-displacement relation, and permanent deformations were discussed. After impact, the specimens along with two undamaged ones were tested under quasi-static compressive loads. Based on the relation between the residual compressive strength and the dimension of the damage region, a model was proposed to evaluate the residual compressive strength of SC panels with impact-induced damage.
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