Analysis of tether anchored floating suspension bridge subjected to extreme environmental loads

Moe, Ole Harald; Aas-Jakobsen, Ketil; Amdahl, Jørgen

doi:10.1016/j.proeng.2017.09.536

Cited by 3 publications

(2 citation statements)

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“…The collision cases between ships and bridges (Chen et al, 2019; Kameshwar and Padgett, 2018; Moe et al, 2017a, 2017b; Wang and Morgenthal, 2017, 2018a) are studied in many articles in recent years, but the studies on the collision cases between ships and anti-collision structures are not common. An innovative foam-filled lattice composite bumper system (Zhu et al, 2018) shows the properties of good energy absorbing and highly designable and performs an obvious advantage in the peak impact force and duration.…”

Section: Introductionmentioning

confidence: 99%

Initial response mechanism and local contact stiffness analysis of the floating two-stage buffer collision-prevention system under ship colliding

Lü

Chen

Gao

et al. 2021

Advances in Structural Engineering

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A floating two-stage buffer collision-prevention system (FTBCPS) has been proposed to reduce the impact loads on the bridge pier in this paper. The anti-collision process can be mainly divided into two stages. First, reduce the ship velocity and change the ship initial moving direction with the stretching and fracture of the polyester ropes. Second, consume the ship kinetic energy with the huge damage and deformation of the FTBCPS and the ship. The main feature of the FTBCPS lies in the first stage and most of the ship kinetic energy can be dissipated before the ship directly impacts on the bridge pier. The contact stiffness value between the ship and the FTBCPS can be a significant factor in the first stage and the calculation method of it is the focus of this paper. The contact force, the internal force and the general equation of motion have been given in the first part. The structure model of the ship and the FTBCPS are then established in the ANSYS Workbench. After that, 38 typical load cases of the ship impacting on the FTBCPS are conducted in LS-DYNA. The reduction processes of the ship kinetic energy and the ship velocity in different load cases have been investigated. It can be summarized that the impact angle and the ship initial velocity are the main factors in the energy and velocity dissipation process. Moreover, the local impact force-depth curves have also been studied and the impact angle is found to be the only significant factor on the ship impact process. Next, the impact force-depth curves with different impact angles are fitted and the contact stiffness values are accordingly calculated. Finally, the impact depth range, the validity of the local simulation results and the consistency of the fitted stiffness value are verified respectively, demonstrating that the fitted stiffness values are applicable in the global analysis.

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Section: Introductionmentioning

confidence: 99%

Initial response mechanism and local contact stiffness analysis of the floating two-stage buffer collision-prevention system under ship colliding

Lü

Chen

Gao

et al. 2021

Advances in Structural Engineering

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“…Accidental loads frequently occur in the maritime environment in the form of collision, grounding and explosion which lead to a wide range of casualties. In the perspective of collision type, ship collision itself can vary depending on situation and condition during the phenomenon takes place, such as side collision [14], platform-ship interaction [15] and bridge-bow impact [16]. The mentioned side collision itself can be focused on several possible causes, e.g., deck crushing and shell tearing.…”

Section: Literature Review: Impact Phenomena On Marine Structuresmentioning

confidence: 99%

Crashworthiness characteristic of longitudinal deck structures against identified accidental action in marine environment: a study case of ship–bow collision

Prabowo

Bahatmaka

Sohn

2020

J Braz. Soc. Mech. Sci. Eng.

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Rising demand for transportation safety during their operation has become public awareness these days which leads to massive development in navigation and mitigation technologies. However, accidents for various transportation modes, including ship, are still occurring despite this progress. The numbers of involved parameters make accidental phenomena in the maritime environment, namely collision to be the latest concern as its influence on remarkable casualties. This paper aims to analyze ship collision incident which involves cargo carrier and passenger vessel. Structural crashworthiness as the main subject accounting for accidental limit state design and safety assessment is performed using a finite element approach to observe both global and local behaviors of the target ship under the bow impact. Initial prediction indicates that major collision energy is dedicated to destroying the main deck and outer shell. The tendency of the force during the collision period explicitly hints that progressive failure on the deck will continue to take place even if the accidental limit is extended. The behavior of the local member/component of the target ship is also to be presented in the discussion.

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Theoretical modeling of spatially varying ground motions under ice-seawater interface and earthquake analysis of cable-stay bridges

Shi

Fan

2019

Soil Dynamics and Earthquake Engineering

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Analysis of tether anchored floating suspension bridge subjected to extreme environmental loads

Cited by 3 publications

References 0 publications

Initial response mechanism and local contact stiffness analysis of the floating two-stage buffer collision-prevention system under ship colliding

Initial response mechanism and local contact stiffness analysis of the floating two-stage buffer collision-prevention system under ship colliding

Crashworthiness characteristic of longitudinal deck structures against identified accidental action in marine environment: a study case of ship–bow collision

Theoretical modeling of spatially varying ground motions under ice-seawater interface and earthquake analysis of cable-stay bridges

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