• Title/Summary/Keyword: transportation technology

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A new cable force identification method considering cable flexural rigidity

  • Wang, Long;Wu, Bo;Gao, Junyue;Shi, Kairong;Pan, Wenzhi;He, Zhuoyi;Ruan, Zhijian;Lin, Quanpan
    • Structural Engineering and Mechanics
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    • v.68 no.2
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    • pp.227-235
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    • 2018

  • Cables are the main load-bearing members of prestressed structure and other tensegrity structures. Based on the static equilibrium principle, a new cable force identification method considering cable flexural rigidity is proposed. Its computational formula is derived and the strategy to solve its implicit formula is introduced as well. In order to improve the reliability and practicality of this method, the influence of the cable flexural rigidity on cable force identification accuracy is also investigated. Through cable force identification experiments, the relationships among certain parameters including jacking force, jacking displacement, initial cable force, and sectional area (flexural rigidity) are studied. The results show that the cable force calculated by the proposed method considering flexural rigidity is in good agreement with the finite element results and experimental results. The proposed method with high computational accuracy and resolution efficiency can avoid the influences of the boundary condition and the length of the cable on calculation accuracy and is proven to be conveniently applied to cable force identification in practice.

  • https://doi.org/10.12989/sem.2018.68.2.227 인용 KSCI

A software tool for integrated risk assessment of spent fuel transportation and storage

  • Yun, Mirae;Christian, Robby;Kim, Bo Gyung;Almomani, Belal;Ham, Jaehyun;Lee, Sanghoon;Kang, Hyun Gook
    • Nuclear Engineering and Technology
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    • v.49 no.4
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    • pp.721-733
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    • 2017

  • When temporary spent fuel storage pools at nuclear power plants reach their capacity limit, the spent fuel must be moved to an alternative storage facility. However, radioactive materials must be handled and stored carefully to avoid severe consequences to the environment. In this study, the risks of three potential accident scenarios (i.e., maritime transportation, an aircraft crashing into an interim storage facility, and on-site transportation) associated with the spent fuel transportation process were analyzed using a probabilistic approach. For each scenario, the probabilities and the consequences were calculated separately to assess the risks: the probabilities were calculated using existing data and statistical models, and the consequences were calculated using computation models. Risk assessment software was developed to conveniently integrate the three scenarios. The risks were analyzed using the developed software according to the shipment route, building characteristics, and spent fuel handling environment. As a result of the risk analysis with varying accident conditions, transportation and storage strategies with relatively low risk were developed for regulators and licensees. The focus of this study was the risk assessment methodology; however, the applied model and input data have some uncertainties. Further research to reduce these uncertainties will improve the accuracy of this model.

  • https://doi.org/10.1016/j.net.2017.01.017 인용 PDF KSCI