济南市公路网规划研究

以公路交通可持续性发展的思想为指导,通过公路网规划研究,为济南市交通发展科学决策,为济南市公路率先实现现代化,为公路交通与其他相关社会经济事业协调、为济南市"十一五"公路网规划提供参考.     

县乡公路网规划探讨

县乡公路是国家(或地区)公路网的重要组成部分,县乡公路的量大而面广,深入到广大的乡镇农村,与国道、省道一起构成了整个国家(或地区)的公路网络体系.加快城乡公路的建设,可以保证全国公路网建设的协调发展,同时对促进乡镇企业的发展、繁荣农村经济和加强城乡物资交流也是强有力的保障.而县乡公路网的规划对于农村公路健康、协调、有序地发展具有极其重要的意义.     

云南省公路网规划的实践与探索

<正> 一、引言 随着我国改革开放的深入,当前公路建设愈来愈显示其重要性和紧迫性,其发展速度比以往任何时候都要快得多。然而,公路建设耗资巨大,我国建设资金又严重短缺,欠帐很多。因此,为了更好地有效利用资金和争取外资,加强公路建设的行业管理和宏观控制,健全公路建设的科学管理机制,提高公路建设投资的社会经济效益,防止建设决策、建设布局的随意性、     

公路网交通量预测在干线公路网规划中的应用研究

为满足不断增长的运输需求,促进区域经济高质量发展,完善公路网,对公路网交通量预测的关键作用及在干线公路网规划中的应用方法进行分析,针对其在干线公路网规划中的应用实例,展开具体的论述,提出公路网规划的策略,提升公路网的运行能力,保障公路网的价值得以实现。     

山西省公路网规划的实践与探索

<正>交通部于1990年4月21日下发了关于发布《公路网规划编制办法的通知》[(90)交计字225号]及《关于编制1991年～2020年全国公路网规划的通知》[(91)交计字707号]两个文件,要求全国各省市、自治区和各市、县编制30年公路网规划,以期达到使公路建设适应国民经济发展的目的,同时使公路网规划工作步入程序化、规模化、科学化的轨道。     

广西公路网规划合理规模探讨

文章在分析广西公路网规划合理规模的主要影响因素和发展阶段特征的基础上,介绍了测算路网合理规模的各种常规方法及其优缺点,并提出了一种分层测算的分析方法,对2020年的广西公路网合理规模进行测算,为类似研究提供借鉴。     

公路网规划中关于城镇化问题的思考

公路交通可以有效地引导和促进城镇化的发展,在规划公路网的时候,一定要动态的、全局的考虑城镇化的发展规律。在满足公路交通需求的同时,要尽可能减少过境交通对未来城镇市内交通的干扰,最好采用切线方式连接公路和小城镇。在规划城镇路边建筑的时候也要尽量减少对公路的干扰,建议采用平行的和纵深发展的辅路的方法连接路边建筑和公路,减少了对公路的干扰,并且有利于新城镇的规划建设。     

公路网现状评价体系及应用

在各地推进公路网系统发展建设的过程中,需要采用科学合理的方法对公路网系统进行系统全面的综合评价,发现现状问题,提出后期发展方向的建议,以期指导公路网的规划建设工作。本文建立了公路网现状评价指标体系,提出了基于专家调研的指标评分等级标准;采用层次分析法确定了评价指标的权重值并开展了公路网现状的综合评价。最后开展了通州区和顺义区的实例应用,发现其现状问题并提出了后期发展方向,从而验证了本文所提出的公路网现状评价指标体系及综合评价方法的科学性、合理性、可靠性和适用性,对公路网现状评价方法的研究具有重要指导意义。     

交通发展规划内容、程序及方法的探讨

本文介绍了目前国内外交通发展规划的内容、程序及方法的现状,针对目前我国交通发展规划存在的不适合市场经济发展的主要问题,提出了新时期交通发展规划中需要引起重视的一些理念及建议,可供交通发展规划部门参考。     

共同富裕背景下农村公路网规划研究——以余杭区为例

受杭州市新一轮的行政区划调整影响,余杭区城市化进程加快,原有的农村公路网已不能适应余杭区的快速发展,急需进行重新规划布局。本文采用连通度等预测方法预测余杭区中长期农村公路路网规模,结合浙江省高质量发展建设共同富裕示范区的相关要求将全区农村公路网结构分层次布局,规划方案将科学指导余杭区公路健康发展。     

改进的模糊层次分析法在公路环境影响评价中的应用

针对每个比选方案从不同的环境角度分析,会各有优势和劣势特点,提出了改进的模糊层次分析法在公路环评应用,较好的解决了在作比选方案同等深度的环境比选时,怎样从环境角度综合评价各比选方案的优劣。     

公路路产登记问题探讨

立足于《物权法》中对不动产登记的规定,详细梳理了不动产登记制度在我国的现状,并有针对性地探讨公路路产登记原则、登记程序以及登记后的档案管理工作。     

The impact of a new rapid transit system on traffic on parallel highway facilities

This study analyzes data of traffic crossing San Francisco Bay and passing through the Berkeley Hills via Caldecott Tunnel to determine the effect of the opening in 1974 of the Bay Area Rapid Transit System (BART) transbay line. There was a sudden shift in trend lines in 1974; vehicle volumes dropped, transit patronage jumped, but total person trips in the short run followed roughly the trends of the previous eight years. Since 1974, the growth rate in person trips through the Berkeley Hills appears to have remained about the same, while transbay vehicle and transit traffic have increased at a more rapid rate. The increase in transit patronage is particularly noticeable between the morning and afternoon peaks and probably represents new trips by shoppers and sightseers. Whereas other factors, such as the increase in the price of gasoline between October 1973 and July 1974 may have contributed a little to the sudden change in the long‐range trends in 1974, it is believed that the major cause was the opening of the BART network to transbay travel.

     

城市轨道交通地下车站环境空气影响问题及对策探讨

LIU Moyun(Fuzhou Roil Transit Design Institute Co.,Ltd.,Fuzhou Fujian 350000,China)     

The impact of major road developments on the spheres of urban influence of Japanese cities

This study aims to measure the impact of major road developments on the spheres of urban influence of Japanese cities.First, the sphere of urban influence is defined by application of an individual behavior model. The model explains the number of trips to representative cities in regions from the residential place of each individual using the following factors; the attractiveness of cities, the travel time to cities and the individual's free time. Development of major roads shortens the travel time, and this causes the change in the sphere of urban influence. The model we propose has the structure to explain this phenomenon.Second, this method is applied to all of Japan where expressways are now being rapidly constructed and, how they change spheres of urban influence is explained. In the application, as a measure of attractiveness of cities, population, commercial and industrial activity, etc. are considered. From these points of view, the impacts of construction of expressways in Japan are estimated.     

Modelling operational, economic and environmental performance of an air transport network

The paper models the operational, economic and environmental performance of an air transport network consisting of airports and air routes connecting them. The operational capacity represents the operational performance. Thresholds on the network’s environmental burdens reflect the environmental performance. The economic performance comprises the network’s profits. Modelling the network performance includes using integer programming techniques to maximise total network profits for given operational capacity and environmental constraints under conditions where environmental externalities are internalised.     

The impact of strategic management and fleet planning on airline efficiency - A random effects Tobit model based on DEA efficiency scores

As a result of the liberalisation of airline markets; the strong growth of low cost carriers; the high volatility in fuel prices; and the recent global financial crisis, the cost pressure that airlines face is very substantial. In order to survive in these very competitive environments, information on what factors impact on costs and efficiency of airlines is crucial in guiding strategic change. To evaluate key determinants of 58 passenger airlines’ efficiency, this paper applies a two-stage Data Envelopment Analysis (DEA) approach, with partially bootstrapped random effects Tobit regressions in the second stage. Our results suggest that the effects of route optimisation, in the sense of average stage length of the fleet, are limited to airline technical efficiency. We show that airline size and key fleet mix characteristics, such as aircraft size and number of different aircraft families in the fleet, are more relevant to successful cost management of airlines since they have significant impacts on all three types of airline efficiency: technical, allocative and, ultimately, cost efficiency. Our results also show that despite the fuel saving benefits of younger aircraft, the age of an airline’s fleet has no significant impact on its technical efficiency, but does have a positive impact on its allocative and cost efficiency.     

县级国、省道公路沥青路面维修施工工艺

根据公路沥青路面病害的性质进行了分类,并对不同的病害分类有针对性的提出了处理方法,为保证处理方法的有效性和实用性进一步提出了质量控制措施。     

Exploring public bicycle network structure based on complex network theory and shortest path analysis: the public bicycle system in Yixing,China

A well-functioning public bicycle system relates not only to its mode of operation, vehicle allocation, rental station layout and vehicle leasing configuration, but also the bicycle network structure and its formation. However, the latter aspects have been widely overlooked in China. Here, we help to further attract more researchers to conduct relevant studies and make suggestions for the development of public bicycle transport in many small and medium-sized cities across the world. We demonstrate how to explore the public bicycle network structure of a county-level Chinese city – Yixing – known for its clay ware and tourism. We show that complex network theory and shortest path analysis technology are useful in characterizing the public bicycle network structure, in aspects such as network topology, the spatial distribution of sub-networks and traffic flows. Finally, the paper proposes relevant urban planning strategies.     

公路养护小修保养预算中路面破损率的整理过程

公路养护小修保养预算(简称小保测算)是公路养护工作的重要组成部分,小保测算涉及指标较多,其中路面破损率是主要指标之一,需要进行路面病害调查、统计、整理计算才能求得,进而求得小保费用。从最原始的数据采集说起,详细论述小保测算中路面破损率的求算过程。