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High-speed rail operations have the potential to reduce the long-term decline in rail passenger travel demand for the medium to long distance inter-urban markets. Such decline has been evident through most of the industrialized countries where air and road transport tend to be the dominant modes. In China, the operations of long distance high-speed rail on fully dedicated track is not very easy to implement, due to the high proportion of passengers who travel between high-speed and conventional railways. An alternative approach would be to allow for mixed operations with trains of various speeds on the same track. This article puts forward a simulation model designed to allow an evaluation of the most efficient distance for high-speed rail operations under mixed train speed scenarios. The model takes into account the main operating parameters such as passenger volumes, train speeds, capital and maintenance costs, train operating costs and energy consumption. The distance of high-speed train running on conventional rail that will yield the most economic benefit can be estimated using the model. The article includes the results of using the model for a specific example. It is concluded that large-scale high-speed trains have the potential to be successfully operated on conventional rail networks. 相似文献
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通过广泛调研分析,揭示了岩溶地区公路工程病害的成因机理,提出了岩溶地区公路工程病害防治的基本原则,以及岩溶水控制和岩溶地基处理的多种具体防治措施。 相似文献
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文章依托具体工程实例介绍连续箱梁节段预制安装施工方法及原理,详细阐述了架桥机安装施工流程、步骤和方法,分析了预制安装施工的关键技术。 相似文献
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沥青路面再生利用,能够节约大量的沥青、砂石等原材料,同时有利于处理废料、保护环境.就地冷再生技术在辽宁特别是营口地区已得到广泛应用,并逐渐被交通领导部门推广,从辽宁省就地冷再生的首例试验路为基础,介绍了就地冷再生的应用过程. 相似文献
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分析了国内外电动汽车的发展现状,并从我国电动汽车技术发展状况入手,着重分析了我国电动汽车发展的优势,如燃料电动汽车整车集成技术、电机和驱动系统、电动汽车的4轮驱动、电动机及其控制技术等取得的进展。指出了在整车技术、电动汽车关键技术、电动汽车标准、基础设施建设及知识产权等方面存在的不足,从而有针对性地提出我国电动汽车的发展对策 相似文献
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农村公路路基防护技术和结构型式的探讨 总被引:1,自引:0,他引:1
在分析农村公路防护现状的基础上,结合各地经验和成熟的路基防护技术和结构形式,对农村公路适宜采用的防护技术和结构形式进行了探讨。 相似文献