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The minimum curve radius is one of the most important factors in railway route design.The minimum curve radius of the Hain-an East Ring Railway, a newly built high-speed passenger-dedicated line from Haikou to Sanya, Hainan, China, was determined through comparative analysis of the design codes both in China and Germany.The results show that the design parameters of the Hainan East Ring Railway in terms of the minimum curve radius determined by China's Temporary Regulations, conform to the ones by German code, and even preserve some capacity for speeds up to 300 km/h in the future.Additionally, the related counter-measures for speed increases in this line were proposed on the premise of the safety and riding comfort of the trains. 相似文献
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在城市产业布局的调整以及新旧动能转换政策背景下,港口运输需求正在发生明显转变。研究产业布局调整与港口发展的关系,合理配置港口现有资源,科学制定港口发展规划,对于促进产业与港口协同高效发展具有重要意义。文章基于分形理论研究城市产业布局演化规律,结合机器学习模型,提出了城市产业与港口建设需求关系分析框架。以山东省16市煤、油、矿、箱四大重点货类及相关产业历年产值、沿海主要港口货物吞吐量数据及进出口数据为基础,梳理了山东省产业规划及港口发展现状,进行了山东省产业结构变化与港口建设需求适应性分析。研究结果可为沿海港口功能布局规划提供理论依据。 相似文献
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