纤维改性稀浆封层技术在大盘线的应用与研究

本文以海城大盘线工程为例，说明了纤维改性稀浆封层技术的特征及其优越性，介绍了纤维改性稀浆封层的各种原材料的选择、各项技术指标试验、配合比设计和试验段的最终检测等内容，对工程实际具有一定的借鉴意义。     

抓紧时间 充实自己

2006年8月底，作为当时新招录人员，我参加了十来天的海事新进人员培训班，杨庆文和我就在一个班上。那时，我曾私下对一个同学说：“我觉得杨庆文这人和其他人不一样。”     

Commercial vehicle export in 2009:to dance while shackled?

For export salesmen of commercial vehicle manufacturers,the second half of 2008 was certainly not the best time. Mr Wang is working at a bus company which exports buses to Russia.From the second half of 2008,he found that partial clients began cancelling their orders and there were increasing such cases.     

摩托车自动驾驶仪的开发与应用

为适应国Ⅲ标准中对摩托车进行排放耐久试验的需要,结合国内车辆和使用实际情况,开发了能够自动操纵摩托车的自动驾驶仪。自动驾驶仪采用＂类驾驶员＂一体化结构,着力点、施力方式等可完全按照人的习惯进行设计,执行器的拟人化特点更为突出,执行器与车辆的匹配和配合非常合理,试验人员调整执行器更易于理解。     

马水河大桥岸坡稳定性离散单元法分析

利用改进后的离散元计算程序，对宜（昌）－万（州）铁路马水河大桥万州岸岸坡在天然和加栽状态下．分别进行了变形破坏的离散元模拟，得出了在两种状态下边坡的稳定性。计算结果表明．岸坡在两种状态下整体均是稳定的。值得注意的是，在天然状态下后期会有一定的裂隙发育，并出现坡体整体下陷．在设计和施工时应予加固防护。     

单轨刚性接触网不均匀磨耗分析及对策

从接触网的角度,对单轨接触网在运行过程中受电弓滑板及接触线出现不均匀磨耗的原因进行分析,并提出相应对策,包括刚性接触网布置方法对磨耗的影响及改进、接触网安装精度对受电弓的影响.在车辆受电弓性能一定的情况下,通过对接触网的改进,减少不均匀磨耗的出现,改善弓网关系,延长受电弓滑板和接触线的使用寿命.     

公路交通引起的地下深层土体振动实测及其衰减分析

为了研究公路交通荷载引起的振动随深度的衰减规律,分别对深度为5.5 m.19.5 m、34.5 m.39.5 m的孔中测点以及孔口附近地面测点进行了位移振动同步测试,并在时域和频域上分别对有车工况和无车工况下的实测数据进行了分析。结果表明:随着深度的增加,交通振动中的高频部分会迅速衰减.低频部分则衰减缓慢,铅垂方向位移衰减因子相比水平方向衰减因子衰减得更快;有车工况下,铅垂方向位移幅值在深度39.5 m处仅为地面的15%.振动衰减已很明显。     

Active regulation of battery charge-sustaining in ECMS: Application in energy management for engine waste heat recovery system

Equivalent consumption minimization strategy (ECMS) is a widely used energy management method in the battery equipped bio-sources energy system, in which an equivalence factor is adopted to weigh the two kinds of energy, usually fuel and electricity. The regulation of the equivalence factor will affect not only the fuel consumption but also the battery's state of charge (SOC) sustainability, which results great influence upon the energy management of the system. In this paper, a new perspective of treating the relationship between the equivalence factor and instantaneous fuel consumption as well as instantaneous electricity consumption as a first-order dynamic system is proposed, thus the relationship between the equivalence factor and SOC is deduced as a second-order dynamic system. Based on the perspective, a linear second-order Active Disturbance Rejection Control (ADRC) is employed to regulate the equivalence factor, which can estimate and compensate, in real-time, disturbances in the system from input-output information only. An engine waste heat recovery energy network constructed by <engine> - <power turbine> - <Organic Rankine Cycle System> - <electric cooling system> - <battery> - <Integrated starter and Generator> is selected as the research object, simulation verifications upon 11 different driving cycles based on the simulation platform established by GT-SUITE software are conducted to test the fuel-saving capability and SOC self-sustainability by the proposed approach with a same set of tuning parameters. Simulation results indicate that both the fuel-saving capability and the SOC self-sustainability can be ensured by the active control of equivalent factor with a same set of tuning parameters upon all the 11 driving cycles, demonstrating a great adaptability of the control parameters.     

城市轨道交通票制与票价研究

随着城市轨道交通的快速发展,其票制与票价问题备受瞩目。本文介绍了城市轨道交通基本票制、票价制定原则及其优惠政策,在分析各城市轨道交通票价的基础上,对影响城市轨道交通票价的因素进行分析,提出未来城市轨道交通票制与票价的发展建议。