Impact Resistance Performance Assessment of Bridge Piers in Navigable Holes Under the Action of Ship Impact
Considering the complex navigational environment of waterways spanned by bridges,which are prone to ship-bridge collision accidents,this study evaluates the impact resistance performance of naviga-tional pier columns of a certain cross-river cable-stayed bridge project under the action of ship impacts.The LS-DYNA simulation software is used to model the process of ship impacting on the pier,obtaining the impact force of the ship.Subsequently,the mechanical response of the pier under a combination of loads including ship impact,self-weight,and buoyancy is calculated,and these responses are compared with the mechanical indicators of the pier in a critical failure state to assess the pier's resistance perform-ance.The evaluation successfully determines the resistance performance of the pier.The study's findings indicate that the bending and shear resistance checks for piers 28 # and 30 # do not meet the require-ments,necessitating reinforcement and the installation of collision protection facilities.
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