Four curved steel-concrete-steel composite plates (CSCSCPs) with different curvatures were designed to investigate the explosion resistance,and the damage,displacement and energy dissipation of the CSCSCPs under blast loading were studied by using the finite element software ABAQUS. Moreover,taking the CSCSCP with curvature of 0.75 as an example,parametric study was carried out to investigate the effect of blasting distance,charge mass,steel plate thickness,concrete thickness,stud spacing and its diameter on the dynamic response of the CSCSCP. The results show that under the same blast loading,the maximum kinetic energy and maximum mid-span displacement of the CSCSCP decrease as the curvature increases. When the total thickness of the inner and outer steel plates remains unchanged,moderately increasing the thickness of the inner steel plate is more conducive to reduce the maximum mid-span displacement of the CSCSCP. Appropriately increasing the curvature of the CSCSCP,reducing the stud spacing and increasing the stud diameter are helpful to improve the explosion resistance of the CSCSCP. Two empirical formulas of mid-span maximum displacement,steel plate's thickness (concrete's thickness) and explosion charges of the composite plate are obtained according to nonlinear regression.
维普
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