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Design and Simulation Analysis of a New Type of Assembled UHPC Collision Avoidance

School of Civil Engineering & National Engineering Laboratory for High Speed Railway Construction, Central South University, 68 South Shaoshan Road, Changsha 410075, China
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Appl. Sci. 2020, 10(13), 4555; https://doi.org/10.3390/app10134555
Received: 3 June 2020 / Revised: 26 June 2020 / Accepted: 26 June 2020 / Published: 30 June 2020
(This article belongs to the Section Environmental and Sustainable Science and Technology)
Ship-bridge collisions are one of the most common types of accidents, and bridge anti-ship collision devices are of great importance for bridge protection. First, a new type of assembled ultra-high performance concrete (UHPC) collision avoidance is proposed in this paper. The main components of the device are double-deck, two-way, densely reinforced ultra-high performance concrete floating boxes that are connected by high-strength bolts to form the whole structure and are equipped with steel supporting elements to form a collision energy dissipation device. The device is self-floating in water, is strongly energy absorbing due to plastic deformation, has a high degree of toughness, is corrosion resistant, and so on. This device also benefits from modular manufacturing, efficient installation, and easy replacement of damaged parts. Then, in this paper, the main parameters of the new collision avoidance, such as the material of the internal supporting elements, the wall thickness of the floating box, and the reinforcement ratio of the floating box, are optimized. Finally, a performance analysis and evaluation of the UHPC collision avoidance for the Honghe Bridge in Zhuhai City are carried out by using LS-DYNA program. The numerical results show that the new collision avoidance has significant advantages in reducing the ship–bridge collision force, prolonging the ship–bridge collision time, and protecting the ship. The results show that the assembled UHPC collision avoidance system is very effective for protecting ships and bridges in the event of a ship–bridge collision. View Full-Text
Keywords: ship–bridge collision; UHPC; collision avoidance; buffer energy consumption; finite-element models ship–bridge collision; UHPC; collision avoidance; buffer energy consumption; finite-element models
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Zhou, L.; Li, H.; Wei, J.; Pu, X.; Mahunon, A.D.; Jiang, L. Design and Simulation Analysis of a New Type of Assembled UHPC Collision Avoidance. Appl. Sci. 2020, 10, 4555.

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