Estimation of parking accumulation profiles from survey data

Parking accumulation profiles at car parks are time-dependent quantities that require data from lengthy observation surveys. However, it is found that car parks can be clustered into groups based on the similarity in the shape of their accumulation profiles. This procedure increases the efficiency of the survey data collected for this purpose. This paper describes a method developed to estimate aggregate parking accumulation profiles at different districts in a city. The planning of the survey conducted in Hong Kong in the year 2000 and the results of the data analysis are also described.     

基于.Net平台和Smart Client的高速公路公司信息管理系统

描述了一个基于Microsoft.Net平台和Smart Client架构的高速公路公司信息管理系统,用Web Service解决已有系统的数据层集成和业务逻辑的封装,同时,通过Smart Client为用户提供一个部署方便、管理集中,响应速度快、界面丰富和能脱网使用的应用程序,使整个系统更加实用和可靠.     

城市交通控制与诱导系统协同效果评价方法

根据交通控制与诱导协同的内容和特点，从交通通行能力改善，交通安全改善，提高交通网络负荷均衡性，降低能源消耗与环境污染等4个方面建立了协同效果评价指标体系；提出了评价指标的量化方法以及基于单纯矩阵法的指标权重计算方法。给出了综合评价模型;利用Paramics仿真软件进行了仿真数据验证，仿真结果表明：此评价指标体系及评价方法科学有效，交通控制与诱导协同后，对交通系统综合改善效果显著。     

基于MapX的城市停车需求预测的研究

在停车生成率预测模型的基础上,通过多元线性回归方法确定各预测区域不同类型用地间相互作用后的停车动态生成率,并利用道路交通量对其进行扩展,建立了用地与交通影响分析模型;然后借助可编程MapX组件,与高级编程语言VB.NET结合进行地理信息系统的二次开发,建立了模型的算法设计,开发了城市停车需求预测性规划管理系统。该系统可以对城市行政区域及其功能小区进行精确的停车需求预测,为停车设施的布局规划提供可靠依据。     

国道G105线番禺段软土特征及处理措施

该文介绍了国道G105线番禺段软土的特征、软土地基稳定和沉降简单计算,从而得出其处理方案。     

Estimating commuter mode choice: A discrete choice analysis of the impact of road pricing and parking charges

Automobile use leads to external costs associated with emissions, congestion, noise and other impacts. One option for minimizing these costs is to introduce road pricing and parking charges to reduce demand for single occupant vehicle (SOV) use, while providing improvements to alternatives to encourage mode switching. However, the impact of these policies on urban mode choice is uncertain, and results reported from regions where charging has been introduced may not be transferable. In particular, revealed preference data associated with cost recovery tolls on single facilities may not provide a clear picture of driver response to tolls for demand management. To estimate commuter mode choice behaviour in response to such policies, 548 commuters from a Greater Vancouver suburb who presently drive alone to work completed an individually customized discrete choice experiment (DCE) in which they chose between driving alone, carpooling or taking a hypothetical express bus service when choices varied in terms of time and cost attributes. Attribute coefficients identified with the DCE were used in a predictive model to estimate commuter response to various policy oriented combinations of charges and incentives. Model results suggest that increases in drive alone costs will bring about greater reductions in SOV demand than increases in SOV travel time or improvements in the times and costs of alternatives beyond a base level of service. The methods described here provide an effective and efficient way for policy makers to develop an initial assessment of driver reactions to the introduction of pricing policies in their particular regions.     

特殊活动的停车选择模型研究

针对特殊活动下的停车问题,提出了出行者选择行为的效用模型和针对各部分效用的标定方法。在原理设计中,考虑了特殊活动下小汽车出行者的行为约束因子,建立了特殊活动下的选择行为模型;在实现方法上,对效用因子进行了标定,并应用最大似然法对出行者停车选择行为时间效益模型作了计算。该研究可以用于进行特殊活动下基于停车选择行为的出行选择分布预测,解决特殊活动下的停车预测和管理的理论问题。     

胸墙式双排桩结构在扩建船闸工程中的应用

针对临近原一线船闸建筑物的扩建船闸挡墙高、变形要求严格、施工条件复杂、施工期兼做船闸围堰等技术难点,经比选提出胸墙式双排桩结构形式,采用有限元法分析了其受力特性。监测表明,相对传统结构形式,该结构桩身受力和变形均较小,对临近现有建筑物的安全有保障,在类似边界条件的工程中具有推广价值。     

北京既有居住小区道路交通及停车问题探讨

随着城市机动化的快速发展,既有居住小区内道路交通和停车问题日益突出。通过对北京既有居住小区的调查,探讨其存在的道路交通和停车问题,并提出改造建议和对策。     

高职交通土建类专业核心课程的改革与思考

专业核心课程是专业教学改革的核心,是构建人才培养方案的基本单元,也是实现高职人才培养目标的基础。以高职交通土建类专业的核心课程为研究对象,通过分析专业核心课程的内涵及其地位,提出了以工作任务为导向的专业核心课程教学改革思路以及构建专业核心课程的主要内容和方法。