TOD内涵分析及实施框架

TOD是美国城市＂精明增长＂模式的重要内容,契合我国可持续发展的城市要求。首先总结了国外TOD实践的主要策略和成功经验。通过对比分析国内外TOD实施目的、实施背景两方面的差异性,从规划技术、城市管理和公共政策多个层面揭示了TOD的本质内涵。基于对我国城市规划、土地利用、建设开发的流程梳理,明确了我国TOD模式推广和应用的原则。最后从政府职能、规划建设管理机制、实施重点以及配套政策4个方面提出了我国TOD实施框架和建议。     

基于拉姆塞定价模型的天津地铁价格定价研究

目前国内的地铁票价大多采取单一票价制或者计程票价制，虽然这在票价上体现了公平，但是，如果利用地铁票价的价格杠杆来引导客流，就可以进一步提高公共交通系统的效率，改善社会福利。研究认为，应用拉姆塞定价原理采用高峰定价法可以实现这种效果。此文从经典的最优拥挤定价理论出发，分析城市道路拥挤定价中的交通需求的变化和在拥挤定价条件下的交通需求预测问题，探讨拥挤定价的收费标准对出行方式选择和需求的弹性，为该高峰分时段定价政策的实施奠定理论基础。     

大型全回转浮吊滚轮轨道公差的分析和设计

全周滚轮回转支撑是大型全回转浮吊的重要组成部分,分析了此类回转支撑中滚轮和轨道的制造误差对实际轮压产生的影响,并为此提出了一种可行的设计思路,为合理确定滚轮直径公差和轨道平面度公差提供了计算方法和理论依据.     

跨孔电阻率CT在岩溶专项勘察中的应用

溶洞是可溶岩地区公路、轨道交通建设中遇到的一种典型地质灾害,其发育范围勘探是溶洞治理的首要任务。文章介绍了跨孔电阻率CT的理论基础和工作方法,并结合勘探实例对该方法的适用性进行了验证分析。验证结果表明跨孔电阻率CT对溶洞发育范围探测具有有效性、可行性和准确性。     

BRT and BHLS around the world: Explosive growth,large positive impacts and many issues outstanding

A survey of Bus Rapid Transit BRT and Bus of High Level of Service BHLS around the world indicates that there are about 120 cities with bus corridors, with 99 of the cities entering into the list in the last 12 years. The existing bus corridors comprise about 280 corridors, 4300 km, 6700 stations and use 30,000 buses, serving about 28 million passengers per day. In 2010–2011, 19 cities completed new systems − 16 in the developing world – and seven cities expanded their current systems. By late 2011, about 49 new cities were building systems, 16 cities were expanding their corridors, and 31 cities were in initial planning. This impressive growth may be attributed in part to the successes of Curitiba, Bogotá, México City, Istanbul, Ahmedabad and Guangzhou. These cities show low cost, rapid implementation and high performance BRTs, with significant positive externalities. Interesting trends are emerging, such as the implementation of citywide integrated bus systems, improved processes for private participation in operations, increased funding from national governments, and growth of bus manufacturers and technology providers. Despite the growth, there are some outstanding issues: BRT and BHLS do not have a single meaning and image and are often regarded as a “second best” as compared to rail alternatives. In addition several systems in the developing world suffer problems resulting from poor planning, implementation and operation, due to financial, institutional and regulatory constraints. The BRT and BHLS Industry are in their “infancy” and there is need for consolidation and concerted effort.     

Rail and multi-modal transport

This paper elaborates on the definitions of inter and multi-modal transport, as well as their differences in terms of performance. A survey of the barriers, both internal and external, to an efficient intermodal transport is included followed by an analysis of the advantages and disadvantages of combining rail transport with the other transport modes. Transhipment technologies for efficient freight service and some examples of freight rail corridors between sea and inland terminals are presented. The integration between air and rail transport is discussed and the potential synergies between air and high-speed rail services are emphasised. The paper concludes with a discussion on energy use for sustainable rail performance.     

Rail Infrastructure: Challenges for Cost–Benefit Analysis and Other ex ante Evaluations

Abstract

Cost–benefit analysis (CBA) plays a major role in the ex ante evaluation of rail projects in many western countries. At first sight carrying out a CBA for rail projects seems straightforward, since cost estimates are almost always available, and the most dominant benefits are generally known, being the travel time saved and the increase in consumer surplus due to induced demand. However, the practice is much more complex: the quality of current estimates for costs and benefits is often poor and several benefits-related aspects are ignored. This article gives an overview of the challenges in improving the quality of CBAs for rail projects.     

轨道交通风险评估WBS工程结构分解准则研究

当前国内轨道交通工程风险评估工作中常用的WBS-RBS风险辨识方法存在不少问题,文章结合工程实践进行了相关研究,明确了工程结构分解法(WBS)的具体分解方法及准则,制定了各分解模块的命名规则.该准则从工程整体上把握风险,遵从风险事件发生特征,避免了传统分类方法存在的重复、不全面等不足;从具体操作流程和分析实例来看,达到了当前风险辨识的目的和风险管控的要求.     

城市轨道交通信号系统监理控制措施分析

本文通过对城市轨道交通信号系统建设难点的分析,结合工程建设实际,从三方面对信号系统建设过程中重要的监理控制措施进行论述,分别对基于关键路径法(CPM)的进度管控措施、工程协调管控措施、贯通调试管控措施的有效性及实用性进行分析,指出城市轨道交通信号系统监理控制措施应富有科学性和创新性.     

地铁屏蔽门门机驱动系统设计

门机驱动系统是地铁屏蔽门控制系统的重要组成部分.本驱动系统运用STM32F103RC处理器对无刷直流电机进行三闭环控制,实现了对屏蔽门的滑动门控制.对系统的设计原理、重要部分软件、硬件进行了描述.最后,通过对门机驱动系统进行测试和分析,确认该系统满足设计和实际使用要求.