Study of Impact Energy-Absorbing Properties and Structural Parameters of an Anti-Collision Device with Granules-Filled FRP Winding Tubes
This paper presents a new type of anti-collision device,which overcomes the drawbacks of conventional passive anti-collision device,such as large volume,high costs,challenging maintenance,and limited collision force absorbing capacity.The device consists of multiple fiber reinforced polymer(FRP)winding tubes that are densely filled with low-density granules,and the tubes are assembled into an integrity and circle around the pier to resist vessel collision.Impact test and finite element modeling were conducted to examine the anti-collision performance of the proposed anti-collision device and select the proper parameters.Specimens with FRP tubes winding at angles of±45°and±75°were prepared for the impact tests,and the winding angles and tube wall thickness were analyzed.It is shown that the finite element modeling agrees well with the test results,the anti-collision device with FRP tubes winding at angles of±75° is more sensitive to shear failure,compared with those winding at angles of±45°.When the tubes have a wall thickness of 4 mm and wind at angles of±45°,the reduction rate of impact peak reaches 55.82％at an impact height of 6.0 m,achieving the optimal anti-collision effect.
bridge engineeringanti-collision deviceFRPwinding tubewinding angletube wall thicknessimpact testfinite element method
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维普
