Numerical simulation research on damage effect of reinforced concrete high-piled wharf under underwater explosion
High-piled wharfs are inherently at risk from underwater explosion during war and terrorist attacks.In this paper,a coupling model of high-piled wharf was established to study the damage effect of high-piled wharf subjected to outer underwater explosion.The damage evolution and damage phenomenon were analyzed to explore the impact of blast distance on the damage effect of high-piled wharf.By combining theory and numerical simulations,the damage characteristics of high-piled wharf at different blast distances are clarified.The study of contact underwater explosion,near-field and long-distance underwater explosion shows that the damage to the middle and top of piles is the most serious when the explosive is in the middle of the water.The punching damage in the middle,shear damage at the top of the pile in contact with explosive.The beam and connection of beams and slab are minor damage under contact explosion.The piles near explosive have no load capacity when scaled distance is less than 0.82.The middle of pile changes from punching failure to bending failure and the top of plie changes from shear failure to bending shear failure as blast distance increases.There are only concrete cover damage or plastic deformation in the middle of piles and slight damage in the pile beam connection when scaled distance is more than 1.23.The pile top and blast depth of plie are both vulnerable at different blast distances.
万方数据
维普
