基于驾驶员路径选择的动态交通仿真模型

描述一个基于路径的动态交通仿真模型(RDTS)，它使用一个微观交通流仿真器结合一个驾驶员路径策划器来实现路网中每辆车从出发地到目的地行程的模拟。应用开发的时间相关最短路模型，驾驶员在向目的地前进途中可以根据交通条件的动态变化而动态地选择和变更路径。RDTS模型采用一个路径选择模型来模拟详细的动态交通分配过程，并且致力于反映路网中个别车辆的行为表现及其相互作用，其中包含车辆生成、路径选择和车辆移动模型，可以很好地应用于驾驶员动态路径诱导领域。     

盾构接收钢套筒内填料压力主动调控试验研究

The control of the pressure balance between the fillers in the steel sleeve and the ground is the key to ensuring the project's safety during receiving the shield with the steel sleeve in subway tunnelling. To realize the active regulation of the filling pressure in the steel sleeve, this study improves the fixed cover of a conventional steel sleeve to a piston cover that can slide freely along the longitudinal direction of the sleeve, and puts forward the corresponding methods for hydraulic pressure regulation and mechanical pressure regulation. The steel sleeve model is designed according to the 1∶5 ratio, and model tests are carried out for different working conditions, such as water injection with pressure increase, water release with pressure decrease, mechanical pressure increase under low levels of internal pressure, mechanical pressure increase and decrease under high levels of internal pressure, so as to study the variation pattern and influence mechanism of the filling pressure with the external hydraulic pressure and mechanical thrust, as well as the variation pattern of the jack counterforce and steel sleeve deformation. The results show that the filling pressure inside the steel sleeve varies linearly and proportionally to the external hydraulic pressure during hydraulic pressure regulation. Specifically, the increase of the mechanical pressure at lower filling pressures (≤0.15 MPa) shows multi-segment characteristics where the filling pressure changes to the variations in the jack pressure, while under the condition of high filling pressure (>0.15 MPa), the filling pressure varies steadily with the regulation process of the mechanical pressure. Both methods can achieve controlled active regulation of the filling pressure in the steel sleeve, and shall be chosen flexibly according to the characteristics of the regulation method, the construction ability, and the regulation's technical requirements. © 2023 Editorial By Modern Tunnelling Technology. All rights reserved.     

关注我国港口的核污染安全

<正>日本的3·11地震引发了福岛核电站的核泄漏事故。4月5日,福岛第一核电站向太平洋排放1万多t污水,放射性物质含量是法定标准的500倍。4月12日,日本政府将福岛核泄漏事故提高到7级。日本核污染除了通过大气和海洋影响其他国家和地区外,还可能在海运中通过船舶、集     

理想启程 上海通用 雪佛兰 赛欧

新赛欧除了名字相同外,和十年前的产品已经大不一样,它重新定位于“全民理想家轿”。实惠的价格、实用的性能、实在的品质,它就是要让更多还没有汽车的家庭理想起程     

英菲尼迪G37 Coupe 勇敢奔跑

人们都在用羡慕的目光注视着身旁的Coupe跑车,可轮到自己却拿不出勇气,总是固执地认为这只是玩的,根本不实用。真是这样吗？     

两代斯巴鲁新老森林人对比 换心手术

看似微不足道的小改款,其实却是一次复杂深入的“换心手术”。除了具有长远的节能环保意义外,也使得森林人变得更为省油、更为好开,也更为经久耐用     

风流雅士

这是代表英菲尼迪品牌精髓和技术实力M系列车型,它带给我们的感觉相当不错,以至于在试驾之后好几位同事都把它的售价高估了10万元左右.     

奥迪A1 走自己的路

奥迪A1是奥迪品牌首款A0级小车。虽然都是个性小车,但是A1选择了一条与MINI和菲亚特500截然不同的路     

传情

驾车时想让后车司机得知你现在的心情并不容易,咱们总不能写张纸贴在后窗不是？车用表情灯就能让后车即刻得知你珊在的驾车情绪,不打算试试？     

健身之后

年轻人一起看车,没提变形金刚也没提美女Rosie,对这款变硬朗的个性车型理性分析,各有独特看法