解决城市道路维护资金不足问题的探讨

通过对哈尔滨市现行城市道路管理体制现状的介绍,对城市道路养护资金来源进行了分析,并提出了解决城市道路维护资金不足的措施。     

The local development effects of major new roads

This paper is based on research undertaken for CPRE (Council for the Protection of Rural England) arising from concern at the inadequacy of current road planning procedures to address the issue of local development effects. The paper puts forward a number of arguments of principle in support of this proposition before recounting the planning and development experience of sites in the vicinity of the original (London-Oxford) section of M40 motorway built 20–30 years ago. This experience points to quite different outcomes in areas of open countryside as distinct from the periphery of the major intermediate town (High Wycombe), paricularly enclaves of enclosed land near to motorway junctions. With the latter the experience points to the failure of the planning system to anticipate and cope satisfactorily with development pressures. Since the provisions of development plans are used as the basis for assessing the impact of new road proposals this situation is not merely inefficient but conflicts with the basic purpose of the public planning system to give full consideration to the likely effects of proposals before they are committed.     

The influence of workplace environment on lung function of shopkeepers working near National Highway in Jalgaon: A note

The inferior ambient air quality was observed near highway passing through Jalgaon urban center. Among the pollutants critical level of particulates are observed at the roadside during May 2003 to April 2004. The shopkeepers working at the highway sides are at high risk of exposure to the air pollution caused by heavy highway traffic. The lung function test of the shopkeepers shows significant decrease in forced vital capacity, forced expiratory volume in one second and peak expiratory flow rate. The regular periodic health checkup and use of nose mask will protect the health of shopkeepers working near National Highway passing through Jalgaon urban center.     

高强高耐水土体固结剂在港口道堆基层中的应用

介绍了一种高强高耐水土体固结剂在港口道路堆场基层中的应用情况。将高强高耐水土体固结剂与土、碎石、石屑等材料按一定比例拌和,形成固结土或固结碎石土,具有固结土强度和早期强度高、高耐水的特点,而且施工工艺成熟,质量易于控制,比传统方法节省成本。在南通港狼山三期通用散货泊位道堆工程中的应用表明,效果良好,可取代传统的水泥稳定土和二灰结石土。     

对乡村公路养护的一点见解

近年来,农村公里里程不断增加,养护问题日益突出,对此问题,对乡村公路的破坏形式及处理方法,谈了肤浅见解.     

桥梁施工安全与质量控制

目前桥梁施工安全与质量控制备受人们关注。结合自身的工作经验,详细阐述了桥梁施工安全与质量控制过程中遇到的问题和采取的相应措施,以实现项目安全、质量可控为目标,提出道路桥梁施工过程中应该注意的相关事项．可为保证桥梁施工安全与质量控制提供理论依据。     

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研究常规公交微观区间运行时间可靠性,有助于从微观层面深入分析常规公交在各区间的运行状态稳定性,查找运行的薄弱段以提高公交服务水平.本文从研究常规公交微观区间运行时间的拟合分布入手,采用正态分布、对数正态分布、伽玛分布和威布尔分布,分别对不同性质城市道路微观区间单位距离运行时间进行分布拟合,样本分析结果表明,对数正态分布是最优拟合分布.根据分位数法确定了不同公交服务水平对应的微观区间单位距离运行时间阈值,在此基础上建立了基于可接受公交服务水平的常规公交微观区间运行时间可靠性模型,并对337路公交实测数据进行实例分析.     

基于在线地图交通状态的关键道路动态识别方法

交通拥堵问题日趋严重,关键道路识别成为了交通领域的研究重点. 以在线地图的交通状态数据为基础,利用时空相关性理论计算道路交通状态的预测值和波动影响值,并通过Moran 散点图划分道路类型,提出了基于在线地图交通状态的关键道路动态识别方法. 首先,调用在线地图开发者平台API 采集路网的交通状态数据,利用集成学习动态预测交通状态;其次,分析交通状态波动的传播结构,以此量化道路对其近邻道路的影响值;然后,结合道路交通状态的预测值和波动影响值划分道路类型,进而识别出关键道路;最后,以实际路网为例,论证方法可行性.     

牧区道路路基合理断面形式的研究

牧区道路是一种比较特殊的道路形式,易受雪害和沙害的影响。利用有限元的方法分析了风速场在遇到路堤、路堑、半填半挖路基时的变化情况,模拟风雪流和风沙流在遇到不同路基断面形式时的速度场,从而提出合理的路基断面形式。     

对西安市快速路建设的意见和建议

针对西安市现有路网已不堪重负、堵车现象日趋严重的现状,结合国内外大中城市的建设经验,提出对西安市快速路建设的意见和建议,力争在今后几年内尽快形成科学、合理的快速路体系,为西安市的经济腾飞及交通环境改善做出贡献。