Experimental study and investigation on collision behavior on steel-rubber combination anti-collision device
To reduce the damage of bridge columns caused by ship collision,a new prestressed steel-rubber combination anti-collision device was proposed.First,three large-scale test components were designed to study the overall mechanical performance,damage mode and bearing capacity of the device through pseudo-static tests.Then the finite element models were verified through the test results,the influence of the welding on its structural force was determined,and the overall dynamic analysis of the anti-collision device was further con-ducted.The results show that the steel-rubber combination anti-collision device has larger capacity than that without recycled tires due to the supporting effect by the tires;the steel-rubber combination anti-collision de-vice has a good buffering and energy dissipation effect,and the energy consumption reaches more than 35％under normal collision and 20° oblique collision,satisfying the function of preventing the collision between ship and pier;the recycled tires not only realize a certain function to turn around ships,but also play the role of energy dissipation and have a rebound effect,since the recycled tires make additional energy dissipation over 5％.Meanwhile,the filling of recycled tires not only improves the self-floating performance,but also enhances the overall performance of the device.
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