圆梁山隧道施工监理

简要介绍了圆梁山隧道工程特点、关键技术难点等,从监理的角度,着重阐述了针对该工程所采取的综合监理监控措施及方法,希望对今后类似的工程施工监理有一定借鉴作用。     

孔口倒角工艺及刀具研究

孔、轴加工必然带有轴头、孔口的倒角工序,由其所起的功能和作用不同而具有不同的要求.倒角工序在工艺设计中常常被认为是辅助工序而被工艺设计人员所忽视.这种认识上的偏差,导致对倒角工序的研究长期以来处于停滞状态.由于缺乏对刀具和工艺方法的研究而出现加工效率下降或难以完成整个工序加工内容的现象.现通过对倒角型式的分类、作用的归纳与总结,针对不同的倒角型式采用不同的工艺方法和刀具进行研究,并对常见的结构提出建议与解决方法.     

动态台车吸能装置的试验调试与研究

汽车的被动安全越来越受到人们的关注。安全带动态试验中,机械缓冲吸能装置的钢条排布方式决定了减速度曲线的最终波形,直接关系到试验结果是否满足标准要求。本文针对机械式缓冲吸能装置,采用试验验证的方法,研究钢条的排布方式,并对台车的减速度曲线进行调试与修正,获得了满足法规要求的曲线。大量实际试验表明:通过试验方法获取钢条的排布方式,吸能装置的减速度曲线稳定,可以满足检测和试验需求。     

Vehicle dynamics and road curvature estimation for lane departure warning system using robust fuzzy observers: experimental validation

This paper describes a new approach to estimate vehicle dynamics and the road curvature in order to detect vehicle lane departures. This method has been evaluated through an experimental set-up using a real test vehicle equipped with the RT2500 inertial measurement unit. Based on a robust unknown input fuzzy observer, the road curvature is estimated and compared to the vehicle trajectory curvature. The difference between the two curvatures is used by the proposed lane departure detection algorithm as the first driving risk indicator. To reduce false alarms and take into account driver corrections, a second driving risk indicator based on the steering dynamics is considered. The vehicle nonlinear model is deduced from the vehicle lateral dynamics and road geometry and then represented by an uncertain Takagi–Sugeno fuzzy model. Taking into account the unmeasured variables, an unknown input fuzzy observer is proposed. Synthesis conditions of the proposed fuzzy observer are formulated in terms of linear matrix inequalities using the Lyapunov method.     

沥青混凝土路面坑槽修补新方法的理论与试验研究

针对提出的沥青混凝土路面坑槽修补新方法——静力热压法，根据朗肯土压力理论和流变学理论，分析了在静力热压条件下高温热沥青混合料剪切流变密实的机理，同时建立了高温热沥青混合料的流变模型，并通过坑槽修补密实性验证试验，证明所提方法的可行性和有效性。     

A multi-objective train scheduling model and solution

This paper develops a multi-objective optimization model for the passenger train-scheduling problem on a railroad network which includes single and multiple tracks, as well as multiple platforms with different train capacities. In this study, lowering the fuel consumption cost is the measure of satisfaction of the railway company and shortening the total passenger-time is being regarded as the passenger satisfaction criterion. The solution of the problem consists of two steps. First the Pareto frontier is determined using the -constraint method, and second, based on the obtained Pareto frontier detailed multi-objective optimization is performed using the distance-based method with three types of distances. Numerical examples are given to illustrate the model and solution methodology.     

铁路长隧道弃碴环境影响分析及其防治措施

在搜集有关资料和具体实践的基础上，系统地阐述了铁路长隧道由于弃碴占地引起耕地面积减少及水土流失、泥石流等生态环境问题，并提出相应的浆砌片石、干砌片石、码砌片石、片石笼及新型的塑料土工格栅工程防护措施与覆土造田、生物治理环保措施，以达到保护环境，防止水土流失的目的。同时提出了弃碴作为二次资源开发与综合利用的途径，使之变废为宝，化害为利，取得环境效益、社会效益及经济效益三统一。     

积极进行《网络工程与综合布线》教学改革、强化学生应用能力

《网络工程与综合布线》课程按照工程和企业的实际需要,进行了大幅度改革。通过企业合作、参观、大作业等多种手段,取得了非常好的效果,学生的应用能力大大增强,2005年被评为院级精品课。     

关于齿廓法线法的简化计算

对平面啮合广泛运用的齿廓法线法进行了简化，并用简化后的齿廓法线法进行了实例计算，结果表明，此法理论正确，概念清晰，方法简便。     

舰船结构气幕减振的模型试验研究

本文介绍和讨论了舰船结构气幕减振的模型试验研究。试验模型为铝质，平底，尖首，方尾、开口薄壁型船模，试验在循环水槽中进行，通过2种吃水，2种喷气孔径，6种喷气流量，2种水流速度的选择组合，研究气幕对船模自由振动，强迫振动和振动阻尼的影响，通过对试验结果的分析整理，得到了一些重要的结论，试验表明，气幕对舰船结构的强迫振动响应有较大的抑制作用，有明显的降噪效果；气幕减振有重要的应用前景。