铁路客运站应对高峰客流的对策研究

通过分析铁路客运站应对客流高峰存在的问题,认为应从人流引导和客运站规划方面进行解决.在人流引导方面,客运站应该做好提前客流预测、加强员工培训、协调其他运输部门以及加大先进设施的运用；在客运站规划方面,通过分析国外先进客运站实例,总结相应经验,为铁路客运站应对高峰客流提供参考.     

新暗挖工法“超前模筑初期支护法”研究

结合沈阳某地铁车站,全面介绍该站采用的新暗挖工法的设计及施工技术,阐述采用新暗挖工法的原因,分析该工法与国内传统暗挖工法及NTR工法的区别及其特点,讨论了该工法在国内的应用前景及需要完善的方向。新暗挖工法具有地面沉降小、施工过程安全可靠、适应地层广泛、结构受力明确且造价适中等优点,极具推广价值。     

Measuring the expected locational accessibility of urban transit network for commuting trips

This paper focuses on measuring of the expected locational accessibility (ELA) of urban transit networks for commuters. The ELA of the transit network is measured by a factor named expected locational accessibility index (ELAI), which is calculated based on the expected number of reachable stations with different times of transfers (ENRST) starting from any one transit station on the network. Two approaches, the sample-test-statistics method and the topological analysis method for determining the ENRST are proposed and tested with an example transit network. Finally, the proposed methods are applied to an empirical study for evaluating the ELA performance of bus transit network for commuters of Xiamen City, China. The empirical results show that the ELAI obtained by our two methods are relatively smaller than those obtained by the existing methods. The reason is analyzed to guarantee the accuracy of ELAI measurement.     

新型节能材料在严寒地区高铁站房的应用研究——以齐齐哈尔南站为例

严寒地区站房节能设计是设计中重点考虑的问题,优秀的节能设计不仅可以给室内提供舒适的热环境,也降低能耗。近年来新型节能材料的不断出现为节能设计提供新的方向,齐齐哈尔南站节能设计中在屋面、墙体、玻璃幕墙等部位使用多项新材料,有效降低围护结构的传热系数,阻止室内热量向室外散失,经使用后实地测试室内温度均超过设计温度。     

对铁路站场到发线曲线地段建筑限界加宽方法的探讨

现行规范对铁路站场到发线曲线地段建筑限界加宽方法有相关规定,实际应用中因动车组列车与普速列车基本参数的差异导致曲线地段建筑限界加宽与实际有差距。通过阐述铁路站场设计现行曲线限界加宽的相关规范规定,结合铁路总公司对客站曲线地段建筑限界加宽的最新要求,分析铁路到发线曲线地段建筑限界加宽的理论计算公式,指出现行曲线地段建筑限界加宽规定存在的主要问题,从而修正现行曲线地段建筑限界加宽的相关规定,以满足实际曲线地段建筑限界加宽要求,杜绝运营中发生车体剐蹭建筑物的事故。     

An integrated programming model for storage management and vehicle scheduling at container terminals

In this paper, we study the optimization of yard operations, which are critical for the terminal efficiency. A linear mixed integer programming (MIP) model is proposed for scheduling different types of equipment and planning the storage strategy in an integrated way. We also investigate a nonlinear mixed integer programming (NLMIP) model to reduce the number of constraints and the computational time. A set of numerical results are carried out for the comparison between the linear model and the nonlinear model. Finally, we propose a genetic algorithm for the MIP model to illustrate how large scale problems can be solved and to show the effect of different factors on the performances of the optimization model.     

现代有轨电车工程中箱式牵引变电所的应用及优化

针对现代有轨电车工程的特点,将箱式牵引变电所作为工程中的第一选择。结合既有工程的经验,从主接线方式、设备平面布置、工程实施等方面提出了现代有轨电车箱式牵引变电所的优化设计方案,为后续现代有轨电车工程中箱式牵引变电所的应用提供参考。     

城市核心区地铁线站位研究——以西安地铁5号线新桃园—劳动南路段为例

新桃园—劳动南路段地处西安城市核心区,建筑物密集、交通繁忙,很大程度限制了地铁5号线走行自由度。从方案概况、线路技术条件、客流吸引条件、与周边环境的适应性及工程实施条件等方面对4个线站位比选方案进行比选,推荐沿桃园路方案。从站位研究和换乘方案分析得出5、8号线在新桃园站采用L形换乘,8号线车站设置在5号线东侧方案是合理可行的。比选结论及建议可以对功能日渐强大的城市核心区线站位选择提供借鉴意义。总结在城市核心区地铁线站位研究过程中应力求做到的层面,以确保最终推荐的工程方案合理可行。     

Measuring the performance of intermodal freight terminals

As the interface point between road and rail, intermodal freight terminals (IFTs) are critical elements in the total freight distribution chain. This paper addresses the twin objectives of reducing freight transport costs and improving customer service by putting forward a number of indicators designed to measure the performance of IFTs. Each of the three major performance areas, namely customer service, operational efficiency and terminal productivity are discussed in detail.

A methodology is put forward which enables operating strategies to be evaluated. Computer simulation is used in order to arrive at strategies which reduce operating and capital costs and satisfy customer service requirements. The simulation model outputs include performance measures related to customer service such as mean waiting times required for loading and unloading of containers, as well as productivity measures of terminal operations such as lifting equipment utilisation.