共查询到18条相似文献,搜索用时 109 毫秒
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为保证山区高速公路质量,保证行车安全性,对外界水对山区高速公路路基路面的影响进行分析,并在此基础上分析山区高速公路路基路面水损害问题的主要原因,探究山区高速公路路基路面排水施工技术,提出相应的施工改进措施,为促进山区高速公路路基路面的安全稳定提供理论依据。 相似文献
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由于长期受车流冲击、气候变化以及其他外部因素的影响,高速公路路面容易出现各种损坏和磨损,给交通运行和行车安全带来不利影响。为了保障高速公路正常运行,提高路面的使用寿命和耐久性,对微表处技术应用进行研究,以期为公路路面养护提供参考,有效修复路面表层破损和裂缝,提高路面的平整度和舒适性,保证交通运行安全、降低维护成本。 相似文献
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路面加宽技术可以提升公路的抗病害能力,提高高速公路通行能力,降低行车过程中交通事故的发生概率。故针对高速公路的运营情况及公路发展需求探究公路路面的加宽要素,结合高速公路的具体工程技术施工要求,对加宽技术进行分析和总结,并从实际案例探究加宽施工的效果,保证加宽方案的切实可行,为高速公路的施工质量充分提升提供良好帮助。 相似文献
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不同的路面大修方案在建设投资、工期、使用寿命、行车舒适性及运营养护成本和难度等方面存在一定的差别。文章为了选择科学合理的路面大修方案,在对南友高速公路龙州联线的车流量、路面病害、路面损坏状况指数、现有路面结构状况及路面结构层厚度等情况进行调查分析的基础上,拟定了若干个路面大修方案,并对拟定的方案进行对比分析,选出最适合南友高速公路龙州联线实际情况且科学合理的路面大修方案,可为华南高温湿热地区同类别公路路面大修方案的制定提供一定的借鉴和参考。 相似文献
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为了做好高速公路运营期环境、气象、能耗的在线监测,保证行车安全、提升服务功能、减少碳排放,本文针对高速公路运营期的空气、水、噪声等环境污染问题,气象灾害导致的交通事故问题,运管养护能源消耗量大的问题,提出建立绿色高速公路在线监测技术体系。该体系基于环境监测、气象监测、能耗监测三个方面,明确监测布点选择及相应指标,开展基础数据采集,并架构在线监测系统平台进行综合分析。该体系面向高速公路管理部门,可为高速公路管理决策提供技术支持,为运营期在线监测技术的集成应用奠定理论基础。 相似文献
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随着我国高速公路网基本形成,目前新增高速公路建设项目多位于山区腹地及偏远地区,这些地方往往基本农田资源稀缺、陆域、水域生态、自然保护地分布多、范围广,生态环境保护要求高,因此对于绿色公路理念的贯彻和落实显得尤为重要。本文从集约通道资源、保护土地资源、生态选线、多元化服务区设计等方面详细阐述了绿色公路理念在漳武高速项目勘察设计中的应用情况,实践表明绿色公路设计对于控制资源占用、减少能源消耗、降低污染排放、保护生态环境、拓展公路功能、提升服务水平方面起到了极大的提升作用。 相似文献
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The variance in fuel consumption caused by driving style (DS) difference exceeds 10% and reaches a maximum of 20% under different road conditions, even for experienced bus drivers. To study the influence of DS on fuel consumption, a method for summarizing DS characteristic parameters on the basis of vehicle-engine combined model is proposed. With this method, the author proposes 26 DS characteristic parameters related to fuel consumption in the accelerating, normal running, and decelerating processes of vehicles. The influence of DS characteristic parameters on fuel consumption under different road conditions and vehicle masses is quantitatively analyzed on the basis of real driving data over 100,000 km. Analysis results show that the influence of DS characteristic parameters on fuel consumption changes with road condition and vehicle mass, with road condition serving a more important function. However, the DS characteristics in the accelerating process of vehicles are decisive for fuel consumption under different conditions. This study also calculates the minimum sample size necessary for analyzing the effect of DS characteristics on fuel consumption. The statistical analysis based on the real driving data over 2500 km can determine the influence of DS on fuel consumption under a given power-train configuration and road condition. The analysis results can be employed to evaluate the fuel consumption of drivers, as well as to guide the design of Driver Advisory System for Eco-driving directly. 相似文献
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文章分析了广西高速公路速度限制存在的主要问题,提出了改进高速公路速度限制的相关措施,对提高广西高速公路管理水平和高速公路通过率、保证行车安全及减少公路交通事故具有现实的意义。 相似文献
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R. W. Botham 《运输规划与技术》2013,36(2):97-108
Based on an empirical analysis of the British road building programme the author concludes that the regional development effect of the highway building is small. Legislative influences such as limitation on driving hours and taxation measures may have a more significant influence on the economy. The road programme was found to have a centralizing effect on the distribution of employment. 相似文献
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This paper proposes a new travel time reliability‐based traffic assignment model to investigate the rain effects on risk‐taking behaviours of different road users in networks with day‐to‐day demand fluctuations and variations in travel time. A generalized link travel time function is used to capture the rain effects on vehicle travel times and road conditions. This function is further incorporated into daily demand variations to investigate those travel time variations arising from demand uncertainty and rain condition. In view of these rain effects, road users' perception errors on travel times and risk‐taking behaviours on path choices are incorporated in the proposed model with the use of a logit‐based stochastic user equilibrium framework. This new model is formulated as a variational inequality problem in terms of path flows. A numerical example is used to illustrate the application of the proposed model for assessment of the rain effects on road networks with uncertainty. 相似文献