我国铁路开行集装箱中转接续班列技术可行性探讨

分析我国铁路集装箱运输现状,利用图示说明我国开行铁路集装箱中转接续班列的思路,从集装箱中转接续班列的开行条件、班列编成辆数、集装箱在办理站的中转停留时间等方面对开行集装箱中转接续班列的技术可行性进行分析,并举例阐述了集装箱中转接续班列的始发终到时间制定,最后简要说明集装箱中转接续班列的运输组织方法。     

哈尔滨集装箱中心站道口信号设计方案研究

集装箱道口是集装箱车辆进出集装箱作业区的必经之处,结合哈尔滨集装箱中心站的站型特点,简要介绍集装箱卡车道口和区间临站道口两种不同类型的道口系统设计方案,着重分析道口通知点位于站内时,由车站联锁控制的道口通知报警时机及传感器自动解除时机的设置。在目前尚无道口定型设计和规范的情况下,以安全适用,技术先进,经济合理为目标,采用先进的传感设备及道口控制系统,制定严密的控制方案,确保哈尔滨集装箱中心站运输生产安全。     

Comments on “Case studies of shipping along Arctic routes. Analysis and profitability perspectives for the container sector” [Transp. Res. Part A: Policy Pract. 66 (2014) 144–161]

This paper points out an important factor that was neglected by “Case studies of shipping along Arctic routes. Analysis and profitability perspectives for the container sector,” when analysing the operating economy of Arctic routes. Further, this paper explains the idea that cargo has a time value. Arctic routes are likely to bring greater commercial value than the Suez, if cargo time value were to be considered.     

看跌期权在集装箱租赁契约中的应用研究

本文将看跌期权引入到集装箱租赁契约中,针对单个集装箱租赁公司和单个承运人组成的单周期、两阶段集装箱租赁服务链,建立了基于看跌期权的承运人决策模型,推导出承运人的最优租箱量和最优期权执行量及其利润函数。同时,文章通过算例分析得出：在需求低迷情况下,与传统契约模型相比较,看跌期权的引入有利于提高承运人的利润,而且随着期权执行价格和需求信息更新准确性的提高,承运人的利润会逐渐增加。     

Effect of a speed reduction of containerships in response to higher energy costs in Sulphur Emission Control Areas

The objective of this paper is to explore the possible consequences of the future low-sulphur fuel requirements in Sulphur Emission Control Areas (SECA) on vessel speed, from the standpoint of the container shipping industry. Rational energy use, speed reduction, and revenues are closely related in the container shipping sector because speed reductions may provide substantial energy and cost savings. The operators could consider reducing their speed in SECA in order to save on fuel that will become relatively expensive. However, to maintain a weekly frequency without adding new ships, such a behaviour implies that the required speed at sea outside the SECA area increases. This paper aims to investigate if such a difference in speed is cost-effective, and if the increase in speed outside SECA may result in an increase in CO₂ emissions of the total cycle. We propose a cost model that estimates the cost-minimising combination of speeds inside and outside SECA, and the resulting CO₂ emissions of the liner service. Applying this model to representative liner services serving North Europe, we find that differentiating speed accordingly slightly decreases total costs and increases CO₂ emissions in a similar way. The results are sensitive to the price of low-sulphur fuels, the part of the cycle in SECA and the number of ships deployed in the service.     

Cluster analysis of the competitiveness of container ports in Brazil

The container cargo proportion of total maritime transport increased from 3% in 1980 to 16% in 2011. The largest Brazilian port, the port of Santos, is the 42nd largest container port in the world. However, Santos’ performance indicators are much lower than those of the world’s largest ports, so comparisons with them are difficult. This article focuses on the Brazilian container terminals that handled containers in 2009 and compares port competitiveness. This study classified seventeen Brazilian container terminals into three distinct groups based on the following competitiveness criteria: number of containers handled, berth length, number of berths, terminal tariffs (in US$), berth depth, rate of medium consignment (in containers/ship), medium board (containers/hour), average waiting time for mooring (in hours/ship), and average waiting time for load or unload cargo (in hours/ship). This classification used a hierarchical cluster analysis. The classification shows that the terminal of Tecon in the port of Santos has the best performance of all, while small terminals (<150,000 container units) are the worst performing terminals in Brazil.     

集装箱船扭转强度和加强方式研究

介绍约束扭转计算原理,分析集装箱船的结构和受力特点,利用MSC/Nastran软件探讨了集装箱船的扭转强度计算方法。在现有结构形式的基础上,提出几种可能提高结构扭转强度的结构加强方案,通过有限元分析比较各方案对于增加同样重量的钢料船体结构中翘曲应力变化情况,比对抗扭效果,研究在考虑成本基础上提高集装箱船抗扭强度的加强方案优先顺序,结果显示对于支线型集装箱船增加舱口围厚度可更有效提高其抗扭强度。     

对改进轮式起重机产品结构设计若干问题的探讨

提高轮式起重机的稳定性，可提高其在大幅度下的起重能力，在改进产品结构设计方面，可采取以下措施：增大支腿间距并使纵横支腿间距相等；吊臂下铰点位置沿最小幅度时吊臂轴线方向适当向前布置；采用组合式人字架以提高工作时的人字架高度；选用较高强度的管材来制造吊臂；在必要情况下，适当增加配重或增大转台尾部回转半径；增加底架刚度。     

集装箱船抗横倾系统及其“0”位检验

本文简略介绍了抗横倾系统的功能,对其系统组成和工作原理进行详尽的说明,并介绍我厂对抗横倾‘0’位的检验方法。     

基于EDI的集装箱运价指数生成与技术分析

为克服目前集装箱运价指数计算中所存在的抽样信息不全面和干扰信息过多等缺陷,通过采用港航电子数据交换(EDI)源信息来生成集装箱运价指数,并展开相应的技术分析。研究表明:这一途径是可行的。