沥青路面水损害作用机理及防治对策

阐述了沥青路面水损坏现象的危害及其作用机理,在充分分析水损坏影响因素的基础上,从路面设计、施工、养护管理等方面,针对性地提出防治对策.     

杭州湾跨海大桥施工中防止钢筋锈蚀的综合性措施

介绍了杭州湾跨海大桥混凝土施工中,采用了海工耐久性混凝土、环氧涂层钢筋、钢筋阻锈剂和加厚混凝土保护层等多种叠加措施,防止钢筋锈蚀的复合防腐蚀体系和施工控制要点.     

关于隧道衬砌产生裂缝的原因及防治

混凝土的裂缝问题是一个普遍存在而又难于解决的工程实际问题,主要介绍隧道二次衬砌混凝土施工产生裂缝的原因和防治措施.     

公路建设对环境的影响及防治措施

公路建设对社会经济发展的促进作用不容致疑,但同时对环境也造成了巨大影响,论述了公路建设以及公路运营对环境的影响和破坏,及为改善公路环境采取的防治措施.     

浅论高等级公路桥头跳车产生的原因及防治措施

从高等级公路施工的要求、特点,对高等级公路施工中应该解决的问题进行了分析。阐述了高等级公路桥头跳车产生的原因及防治措施。     

A constraint programming model with time uncertainty for cooperative flight departures

The lack of a proper integration of strategic Air Traffic Management decision support tools with tactical Air Traffic Control interventions usually generates a negative impact on the Reference Business Trajectory adherence, and in consequence affects the potential of the Trajectory-Based Operations framework. In this paper, a new mechanism relaying on Reference Business Trajectories as a source of data to reduce the amount of Air Traffic Controller interventions at the tactical level while preserving Air Traffic Flow Management planned operations is presented. Artificial Intelligence can enable Constraint Programming as it is a powerful paradigm for solving complex, combinatorial search problems. The proposed methodology takes advantage of Constraint Programming and fosters adherence of Airspace User’s trajectory preferences by identifying tight interdependencies between trajectories and introducing a new mechanism to improve the aircraft separation at concurrence events considering time uncertainty. The underlying philosophy is to capitalize present degrees of freedom between layered Air Traffic Management planning tools, when sequencing departures at the airports by considering the benefits of small time stamp changes in the assigned Calculated Take-Off Time departures and to enhance Trajectory-Based Operations concepts.     

动车组CIR设备重复故障的问题分析及解决

车载综合无线通信设备是动车组与调度、车站之间的信息交互平台,可有效保障动车组运行过程中的信息传输畅通和车辆运行安全.本文通过一起动车组车载CIR设备重复故障,分析故障发生原因并提出处理方法,为降低故障影响、预防故障发生提出建议措施.     

喷水推进装置推进泵空泡分析

本文介绍喷水推进应用,分析了喷水推进泵在船舶应用上进入空泡区的特性、喷水推进的空泡特点、空泡的危害性以及避免进入空泡区的措施。     

“飞龙山”浮船坞的升级改造

着重介绍菠萝庙船厂“飞龙山”浮船坞在升级改造中采用的创新措施,为同类浮船坞的改造提供了一个成功的范例。     

浅谈公路建设中水土保持措施

随着我国公路交通事业的快速发展,公路建设带来的环境问题也日益严重,因公路建设引起的水土流失、生态破坏、噪声等对环境的影响,已引起人们的广泛关注。在公路建设中如何尽量减少水土流失、保护路域环境是我们公路建设者不容推卸的责任。