三亚大隆水利枢纽施工汛期土石坝局部管涌现象探讨

2005年主汛期,正在施工中的大隆水利枢纽分区土石坝遭遇了台风"达维"正面袭击,流域持续突降暴雨,入库最大洪峰流量在9 950 m3/s,坝前水位总涨幅达34.4 m,施工汛期土石坝度汛断面突发局部管涌现象,由于措施及时有效,土石坝经受住了百年一遇洪水的严峻考验,该文回顾管涌发生始末,探讨成因和措施,类似经验可供相关专业人员参考。     

海事劳工公约要求下的船旗国管理评析

为了在全球范围内统一实施公约标准,2006年海事劳工公约同时引入了对船旗国管理和港口国监督的要求。本文从船旗国管理的角度,介绍了公约的相关制度及我国履约工作的推进,并为我国的履约准备工作提出了相关建议。     

Timetable-based operation in urban transport: Run-time optimisation and improvements in the operating process

Urban public transit provides an efficient means of mobility and helps support social development and environmental preservation. To avoid loss of ridership, transit authorities have focussed on improving the punctuality of routes that operate using timetables. This paper presents a new approach to generating run-time values that is based on analytical development and micro simulations. The work utilizes previous research (described herein) and the experience acquired by Transports Metropolitans de Barcelona (TMB) in operating bus routes based on timetables. Using a sample of historical data, the method used for generating run-time values consists of the following steps: purging and screening atypical trips, based on the consideration of confidence intervals for median trips; segmenting the day into time bands based on the introduction of a new hierarchical classification algorithm; creating initial run-time values based on criteria derived from statistical analysis; adjusting and validating initial run-time values using micro simulations; and evaluating incident-recovery times at the end of trips in order to guarantee the punctual departure of the next trip in the vehicle schedule. To favour service improvement, we also introduced certain indicators that can identify the root causes of non-compliance. As a final step, in order to ensure the applicability and use of the model, we promoted the development of our model within the framework of the HASTUS™ software solution.     

基于混合动力城市客车控制策略的研究

介绍了三种典型混合动力城市客车的类型,并描述和分析了其各自控制系统的控制策略.同时对混合动力城市客车的应用及发展前景作了阐述.     

应用Cruise(v3.0)的纯电动汽车仿真方法

本文阐述了利用奥地利AVL公司开发的Cruise(V3.0)软件进行纯电动汽车整车建模、制定仿真计算任务、运行计算并分析计算结果等的具体方法。着重介绍了Cruise、Matlab\Simulink联合仿真技术,从而将整车控制策略、电源管理策略、电机控制策略和制动回收策略应用到仿真技术中的过程和方法。     

丹东(国际)客运站基坑支护工程、降水工程施工过程中的造价控制

结合丹东(国际)客运站基坑支护、降水工程施工方案,阐述了施工过程中的造价控制方法,提出加强工程施工阶段造价控制是优化投资经济和技术组合、缓解建设资金的供求矛盾、降低工程成本、提高经济效益的有效途径。     

浅谈高速公路路面施工安全管理方法

文章通过分析当前高速公路路面施工安全状况,划分高速公路路面施工危险区域,找出存在的危险控制点,确定项目重大危险源。同时针对项目施工主要危险区域及危险控制点,提出了高速公路路面现场施工安全管理方法。     

地铁防淹门系统的设计

介绍地铁防淹门系统闸门的设计和设备的选型、系统功能和控制原理的设计;从经济和工程实现的角度,对控制方案和水位监测方案进行比较,对控制设备的功能进行描述;阐述防淹门系统与主控系统、信号系统间的接口功能。     

TYTK型停车防溜控制系统与编组站综合自动化系统的结合

编组站的驼峰和编尾主要完成货物列车的解体和编组,。为了防止溜放的车组冲过停车线进入尾部咽喉区,需要在编组站驼峰尾部配置停车防溜控制系统。为此,研究TYTK型停车防溜控制系统,以及与SAM系统的结合。     

Rolling horizon control framework for driver assistance systems. Part II: Cooperative sensing and cooperative control

This contribution furthers the control framework for driver assistance systems in Part I to cooperative systems, where equipped vehicles can exchange relevant information via vehicle-to-vehicle communication to improve the awareness of the ambient situation (cooperative sensing) and to manoeuvre together under a common goal (cooperative control). To operationalize the cooperative sensing strategy, the framework is applied to the development of a multi-anticipative controller, where an equipped vehicle uses information from its direct predecessor to predict the behaviour of its pre-predecessor. To operationalize the cooperative control strategy, we design cooperative controllers for sequential equipped vehicles in a platoon, where they collaborate to optimise a joint objective. The cooperative control strategy is not restricted to cooperation between equipped vehicles. When followed by a human-driven vehicle, equipped vehicles can still exhibit cooperative behaviour by predicting the behaviour of the human-driven follower, even if the prediction is not perfect.The performance of the proposed controllers are assessed by simulating a platoon of 11 vehicles with reference to the non-cooperative controller proposed in Part I. Evaluations show that the multi-anticipative controller generates smoother behaviour in accelerating phase. By a careful choice of the running cost specification, cooperative controllers lead to smoother decelerating behaviour and more responsive and agile accelerating behaviour compared to the non-cooperative controller. The dynamic characteristics of the proposed controllers provide new insights into the potential impact of cooperative systems on traffic flow operations, particularly at the congestion head and tail.