吊舱式液压推进系统——舰艇推进新模式探讨

提出吊舱式液压推进系统的功能和原理框图及系统组成;对系统的主要部件如螺旋桨、液压马达、液压泵等的设计进行了探讨;指出吊舱式液压推进系统的优点,并与吊舱式电力推进系统相比较;对实施该系统应该事先研究的问题作了分析,并提出解决的措施。最后得出结论:吊舱式液压推进与吊舱式电力推进有很多共同的优点,但是,吊舱式液压推进更占优势,具有更诱人的发展和推广的潜力。     

高速公路拼接加宽路基损坏及处治技术研究

我国早期修建的高速公路已经不能满足交通运输的需求,需要拓宽改造。根据高速公路改扩建现状,对路基拼接加宽过程中出现的路基损坏、支挡结构损坏及路面损坏的成因进行了研究。从改扩建设计、施工及后期养护等阶段人手,对上述损坏类型的处治技术进行了分析。研究成果为今后高速公路改扩建路基设计和相应的处治措施的选择提供参考。     

控制柜面板工艺的改进

为了提高控制柜的生产效率和质量、降低加工劳动强度,结合实际,详写了控制柜工艺特点、存在问题、原因分析,利用新技术、新工艺对原面板工艺进行改进,实施效果良好,得到了同行的认可及推广。     

广明高速公路FD段轻质直立式路堤施工质量控制

根据工程质量控制的系统性、阶段性,按照施工质量控制的事前控制、事中控制、事后控制的过程控制方法,结合具体工程实践,针对高掺量粉煤灰泡沫轻质土的轻质、可流动及固化直立特性,探讨了高速公路新型轻质直立式路堤新技术在施工中的质量控制,为新型轻质直立式路堤的推广,提供了质量保障。     

新能源汽车安全分析及发展建议

通过对新能源汽车安全事故的梳理和分析,发现新能源汽车安全事故具有复杂性和系统性特征,需要进行统筹分析和界定。我国对新能源汽车的安全管理包括建设监控平台以及制定执行安全标准等措施,仍需要进一步的落实实施。建议企业在新能源汽车安全方面要更加重视技术研发和对产品安全的管理水平,而政府应该重视政策管理的科学可持续性以及前沿科技的引导与研发。     

Rebound effects caused by the improvement of vehicle energy efficiency: An analysis based on a SP-off-RP survey

This study provide a straightforward way of examining the rebound effects of switching to more fuel efficient technologies, as well as determining the distribution of the effects in the household sector, including both the residential and transport sectors. A SP-off-RP survey conducted in Japan in 2012 asked people to state their preference for the reallocation behaviors after informing them of their annual operating cost saving resulting from the vehicle efficiency improvement. Coupled who save money from relocation are more likely to spend this either on housing features or transport; supporting the idea of rebound effects, although not only limited to within the transport sector. Regarding the distribution of rebound effects, domestic appliances are more likely to be affected than vehicles.     

隧道光导照明技术试验研究

光导照明技术应用于隧道照明目前是国际研究前沿。对长江路隧道应用光导照明技术可行性进行现场实验研究。实验分3个阶段,对不同天气情况下,不同时段的室内外路面照度值、地面总均匀度、车道纵向均匀度和室内外照度比值等进行了大量的跟踪测试,并对两家厂家产品的性能作了对比,最终证明了长江路光导照明系统设计方案和光导照明技术应用于隧道照明的可行性。     

网络经济重塑企业新理念

本文论述了网络经济重塑企业新的理念、网络经济的作用及信息成为网络经济的核心资源和重要的生产要素。企业必须重视网络经济的建设 ,迎接新经济的挑战。     

Three-dimensional derailment analysis of crashed freight trains

In this paper, the collision-induced derailment of freight trains was investigated. The collision between two identical freight trains occurring on a curved path rather than along a straight line was investigated. This is because from the point of view of safety against derailment this collision scenario is thought to be more critical than the scenarios defined in the European standard EN 15227. In this work, one of the trains is stationary and the other moving train collides at 36 km/h. Two kinds of container wagons were simulated. One is the two-axle freight wagon Kls 442. Another is the freight wagon Rmms 662 with two Y25 bogies. Simulation results demonstrate that in terms of safety against derailment the bogie wagon Rmms 662 was found to have better behaviour than the two-axle wagon Kls 442. In addition, this study points out that there are many contributory factors to the responses of freight wagons during a collision, such as curve radius, distance between bogie pivots and loading mass. The derailment phenomenon is less likely to occur, when freight trains collide on the curve with a larger radius. Besides that the characteristics of freight wagons with large axle loads, low centre of gravity of car body and appropriate static strength are favourable for the collided wagons in reducing the risk of derailment.     

基于综合监控系统的城轨交通节能研究

基于城市轨道交通综合监控系统跨专业平台多,监控信息量庞大的特点,在综合监控系统结构分析的基础上,结合城市轨道交通机电设备系统的能耗分析,给出基于综合监控系统的城市轨道交通空调、照明、给排水、电扶梯等机电设备系统的节能控制方法,并对综合监控系统参与其监控设备系统的节能优化控制方法进行研究,构建基于综合监控系统的节能控制方案。为城市轨道交通运营提供更加信息化、综合化、精细化的能源管理方案,对未来长期运营节约能源和成本具有重要的意义。