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北京城市道路交通建设与发展 总被引:1,自引:1,他引:0
本文从北京市城市道路交通建设发展的四个阶段 ,遇到的一些重要的建设课题以及当前和今后的建设重点三个方面 ,介绍了北京市城市道路交通建设与发展的概况 相似文献
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Reform in the public sector in New Zealand saw the abolition of the Ministry of Works and Development in 1988, with the commercial activities being transferred into a Government owned company. Further reform saw the client function of roads transferred initially into the Ministry of Transport and then into an independent Crown agency known as Transit New Zealand. Transit New Zealand is led by an Authority of six members, appointed by the Government, and it administers the strategic (national) road network (10,500 kilometres).In 1996 a separate funding body, Transfund New Zealand, was established to distribute funds to Transit New Zealand and local authorities. Transfund New Zealand is funded through a share of the petrol excise, all vehicle registration and licensing fees and all road user charges (an axle-weight/distance charge levied on diesel vehicles, especially trucks). These revenues are paid into a dedicated National Roads Fund, which allows a measure of transparency in funding the road system. The reforms in New Zealand have resulted in large efficiency gains, with no measurable lowering in level of service.The road agency of the future is discussed, along with possible changes in road management. 相似文献
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针对连云港后云台山互通式立交设计项目,分析比较了互通的功能和形式,提出了2套适用于山海结合部位复杂地形的全定向Y形互通设计方案,并从技术指标、工程规模和占用土地等方面进行了综合比选,探索了复杂因素控制条件下3路互通立交的设计思路和选型问题. 相似文献
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农村公路建设由于资金和技术等原因,容易出现早期病害。分析农村公路沥青混凝土路面的早期病害形式,提出产生病害的主要原因在于材料、施工质量和使用管理等方面。水泥混凝土路面产生早期病害的原因在于施工质量、配套设施和使用管理等方面,最后提出改进方法。 相似文献
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分析了专用公路交通量预测的影响因素,把专用公路交通量预测分为3类:A类机械变化交通量、B类园区诱增交通量及C类趋势交通量。提出了3类交通量的预测方法,并通过实例应用,验证了预测方法的可行性。 相似文献
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在城市道路集中功能的同时,它的形式有必要强调,尤其是做为城市门户的城市道路。合理的形式除了带来美感效应也能提高其功能的效应。通过对城市道路的各个构件、路面材料及色彩,抒之已见。 相似文献
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Denvil Coombe 《Transportation》1996,23(1):83-101
Mathematical models of transportation systems have played a prominent role in transportation planning throughout the world since the 1960s. These models are hypotheses of how people use transport systems. They provide a means of extrapolating the necessarily limited empirical evidence of how road users respond to changes in the road system. However, it needs to be recognised that these extrapolations rely for their validity on the realism of the underlying theories; transportation models can only tell us about the relationships actually built into them.This paper reviews the limited number of studies undertaken mainly in the UK in which calibrated transportation models have been used in a systematic way to give some insight into the relative importance of the various components of induced traffic. These studies include analyses of the effects of road schemes using: a theoretical single link model; conventional four-stage transportation models of Cardiff and Belfast; elasticity models in Cardiff, Belfast, West London and Norwich; land-use interaction models in Leeds, Bilbao, Dortmund; and a model of land-use effects in Norwich. The results tell us two things: (a) the scale of the various elements of induced traffic, and (b) the implications for the economic benefits of road schemes. 相似文献