山地城市桥头立交交通评估及改进建议

山地城市路网结构特征及桥头立交功能具有特殊性。以重庆市主城区已建桥头立交为例,首次系统评估并分析其主城区已建桥头立交存在的交通问题,从立交等级、技术标准、车道数匹配、衔接道路集散能力及衔接滨江路等多方面对山地城市桥头立交规划建设提出改进建议,为以后山地城市桥头立交规划建设提供借鉴。     

中小城市快速路网规划布局研究——以江苏省启东市为例

经济发展迅速的中小城市面临着城市化区域快速扩张、汽车保有量不断增长、道路拥堵情况日益严重等问题,亟需预先规划快速路网.以江苏省启东市为例,对交通现状和规划进行了解析.从快速路网的布局、功能和规模等方面对国内外城市快速路网规划经验进行了总结.在此基础上系统性地介绍了启东市快速路网规划的规模与目标,对快速路网规划布局的两个方案进行了对比分析.最后综合考虑快速路网对城市主功能区的对外辐射集聚效应、对城市核心区的服务功能以及工程的可实施性,选择确定了快速路网的布局方案,并对具体的路网结构进行了介绍.     

一种采用输移浓度为主要参数的泥石流流量计算新方法

根据沟床水力条件对泥石流浓度的调节作用和泥石流浆体浓度对沟槽输移能力所具有的重要影响。建立了由流域产沙条件来估计浆体浓度，再由沟槽输移浓度来确定泥石流流量的新方法。经过比检验。计算流量与形态调查流量相近，平均相对误差为－６．９％，最大相对误差为－１４％。     

Exploring key determinants of travel satisfaction for multi-modal trips by different traveler groups

Using a primary dataset from an experimental survey in eight European cities, this study identified the key determinants of satisfaction with individual trip stages as well as overall journey experience for different travel modes and traveler groups. Multivariate statistical analyses were used to examine the relationships between overall satisfaction and travel experience variables, trip complexity, subjective well-being indices, travel-related attitudes as well as individual- and trip-specific attributes. The results indicate that for certain traveler groups, such as women, young and low-income or unemployed travelers, there are distinctive determinants of satisfaction with trip stages for various travel modes. The results also indicate that satisfaction with the primary trip stage is strongly linked to overall trip satisfaction, while satisfaction levels with access and egress trip stages are strongly related to satisfaction with the primary trip stage. Past experience, traveler expectations and attitudes, and the emotional state of travelers are also significant explanatory variables for travel satisfaction. The results indicate that when an individual consciously chooses a particular travel mode, they will report a higher level of satisfaction with that chosen mode. Notwithstanding, while past experience highly influences an individual’s current travel satisfaction, the more they travel with the current mode, the less satisfied they are with their choice. The results of this study highlight the importance of gaining a better understanding of the interaction between instrumental variables and non-instrumental variables at different trip stages and the influence on user preferences, satisfaction and decision-making processes.     

The transportation systems of Buenos Aires, Chicago and São Paulo: City centers, infrastructure and policy analysis

We compare the passenger transportation systems of Buenos Aires, Chicago and São Paulo. The selected cities represent distinctive combinations of land-use, infrastructure, and evolution of transport policy. Analysis is centered on accessibility to downtown areas, where transportation processes converge in an environment where space is scarce. In two of the three cities institutional arrays that legally establish unified decision making have shown little capacity to launch fare or physical coordination between modes. In two of the three cities the concentration of public transportation supply to historical downtowns has not been an attraction factor, and downtown uses have expanded to less accessible areas. Gentrification in Chicago is also another process showing that land use changes are related to many factors, transportation being only one of them, and not always a necessary one. In all three cases the use of railways, as a set of inherited infrastructures, has seen an increase whose magnitude suggests a link to modal reassignment due to increasing congestion. Scarcity of space in old downtown areas is being counteracted through more intense use, or through the expansion of vertical space for transportation operations.     

中小城市高品质公交建设方案研究——以江西吉安为例

中小城市公共交通系统客流规模相对较低,一般情况下不适宜建设轨道交通、快速公交等中大运量的公交系统.在常规公交的发展过程中,通过提升公交可靠性,提高发车频率和准点率,切实提升常规公交的服务水平,是一种适合中小城市的公共交通发展提升的实施模式,有利于增加公交服务吸引力,提升公交分担率,促进中小城市的交通系统朝绿色、可持续的方向发展,具有较好的借鉴意义.     

山地城市道路交通改善与建筑项目开发一体化策略

山地城市建筑项目的高强度开发与亟待改善的道路交通之间矛盾突出,亟须拟定道路交通改善与建筑项目开发一体化策略,促使建筑项目与道路交通协调发展。从建筑项目开发与交通改善措施的结合点出发,围绕减少道路交通量和提高道路通行能力两方面探讨道路交通改善的主要措施。总结了10项建筑项目开发与交通改善的一体化策略,包括用地控制、与交通设施结合等内容。最后指出,在城市道路交通与建筑项目的协同工作中,应根据具体情况选择采用可行性较强的措施。     

北京市郊铁路发展初探

市郊铁路系统是世界级城市轨道交通系统的重要组成部分,也是发达国家和城市满足长距离交通需求的主要手段。面对北京市城市规模扩大以及京津冀区域协同发展的要求,探讨如何发展北京市郊铁路并使之与城市轨道交通形成有机的整体。首先分析伦敦、纽约、巴黎、东京4个世界级城市的中心集聚强度以及市郊铁路对城市运行的支撑作用。同时,回顾这4个城市的市郊铁路发展历史进程,总结其网络布局特点及经验教训。在此基础上,提出北京市郊铁路发展的原则和思路,强调与现有及规划铁路资源在运营上互联互通,同时建立铁路与城市轨道交通一体化管理、运营体系。     

中小型城市发展空轨交通的可行性分析

本文主要介绍了空轨的组成、发展现状、优越性以及建设空轨交通的必要性,并将空轨与地铁和轻轨进行了对比分析。针对中小型城市的出行需求从空轨的建设资金、便捷施工、线路规划、运行效益、出行安全、绿色环保等方面进行分析,探计了在我国中小型城市发展空轨系统的可行性。此外,根据国外空轨运营多年的经验,进行了关于空轨建设的思考并给出了相关的建议。     

辽宁省沟域旅游发展的瓶颈问题及解决对策

通过对沟域、沟域经济的概念介绍,引出沟域旅游的概念。通过介绍近年来辽宁省沟域旅游发展的概况,归纳整理出辽宁省发展沟域旅游过程中遇到的瓶颈,并根据这些瓶颈问题有针对性地提出解决对策。笔者从资金投入、融资渠道、土地利用、科学规划、人才培养、标准化服务等方面,提出了切实可行的措施和方法。