关于加强高速公路养护管理工作的建议和措施

为探讨加强高速公路养护管理工作的建议和措施,根据对高速公路养护工作的要求,介绍了高速公路养护工作的意义和其重要性、提出对养护工作的要求,探讨了高速公路养护工作中的问题,主要有重建轻养问题、养护工作的薄弱问题和养护管理模式与运行机制问题,提出高速公路养护的措施,主要有:养护与绩效管理措施、养护工作与规范管理要求和养护工程的验收与安全管理,同时提出对高速公路养护的建议,主要有转变观念、市场化运、档案管理和养护队伍素质的提高问题。     

沥青路面预防性养护分析

路面预防性养护是与传统纠正性养护不同的一种高标准养护方式.在介绍预防性养护的内容、特点和常见预防性养护措施的基础上,提出了进行预防性养护的关键技术,并对预防性养护的效益进行了分析,阐述了在适当时机对沥青路面进行预防性养护的必要性.     

浅谈沥青路面的养护对策

针对沥青路面的养护特点,从初期养护、日常养护及季节性养护三个方面对沥青路面养护进行了论述。     

浅谈高等级公路路面坑槽的养护管理

通过对高等级公路养护管理特点的分析,指出现阶段我国高等级公路养护管理存在的问题,借鉴发达国家在公路养护管理方面的先进经验,从技术管理、养护机械化方面,对我国高等级公路养护管理发展提出合理对策。     

浅谈高等级公路路面坑槽的养护管理

通过对高等级公路养护管理特点分析,指出现阶段我国高等级公路养护管理存在的问题,借鉴发达国家在公路养护管理方面的先进经验,从技术管理、养护机械化方面,对我国高等级公路养护管理发展提出合理对策。     

浅谈高等级公路路面坑槽的养护管理

通过对高等级公路养护管理特点的分析,指出现阶段我国高等级公路养护管理存在的问题,借鉴发达国家在公路养护管理方面的先进经验,从技术管理、养护机械化方面,对我国高等级公路养护管理发展提出合理对策。     

二氧化碳养护再生骨料水泥混凝土的试验研究

试验研究了二氧化碳养护对再生骨料的影响,再生骨料的取代率分别是0%、50%和100%,混凝土在100%二氧化碳养护箱里养护6、12和24 h。测试了混凝土在二氧化碳养护前后的失水量和二氧化碳养护程度,并测试了再生混凝土在二氧化碳养护后的强度和干缩值。和标准养护相比,二氧化碳养护的混凝土具有更高的抗压强度,更低的收缩值。然而,养护时间和再生骨料取代率对二氧化碳养护程度影响不大。     

机械化养护的实践与探索

通过对云浮市公路局推行公路机械化养护工作的分析,探讨如何深化公路养护体制改革,加强养护机械管理,提高公路养护人员技术素质,促进机械化养护发展。     

桥梁养护管理

结合公路桥梁养护管理的相关内容,分析当前公路桥梁养护管理的现状,并从养护管理难度大、养护管理缺乏细致等方面对公路桥梁养护管理中存在的问题进行研究;最后,对如何开展公路桥梁养护管理进行研究。     

高速公路沥青路面养护规划探讨

结合广东开阳高速公路路面养护规划编制,对高速公路沥青路面养护规划进行了探讨,提出了养护规划和改造设计的三要素：养护规划、养护时机和养护路段的具体方法,并采用了全寿命周期成本方法分析养护规划的经济性。     

Optimal Research on Equipment Maintenance Unequal Time-Interval Based on Simulation

The paper deals with systems suffered from gradual deterioration. To avoid functional failures and disastrous consequences, such systems should be monitored and preventively maintained. And to promote the maintenance effectiveness, an unequal time-interval maintenance policy was brought forward to substitute fixedinterval preventive maintenance strategy. At the same time, preventive and corrective maintenance actions are both assumed to be imperfect, and their impact on the system is expressed by the increment of failure rate. The case study shown that the unequal time-interval maintenance policy proposed in the paper is of help to promote the availability of the system.     

Modelling upgrading maintenance policy in the one-dimensional renewing warranty period

In the one-dimensional renewing warranty period, the quality of the spares for product is likely to be improved during the warranty period. Therefore, upgrading maintenance becomes more and more common. Then the manufacturers (customers) may have to decide whether or not to provide (buy) the warranty considering upgrading maintenance. This paper presents a mathematical model considering upgrading maintenance for products with multiple failure modes. Upgrading maintenance is taken into account with the assumption that the warranted item is upgraded one time during the warranty cycle. The upgrading maintenance is carried out, when the corrective maintenance is taken place. After upgrading maintenance, the high-quality spares are used to replace the failed item. In the numerical example, the results of the models are calculated. Monte Carlo simulation results are compared with the analytical results to demonstrate the correctness and efficiency of the proposed models considering upgrading maintenance.     

南京地铁桥梁养护技术标准编制体会

以《南京地铁桥梁养护技术标准》编制为背景,介绍了编制背景、编制原则、编制方法及编制内容等,为南京地铁运营桥梁结构检查、评定养护工作提供依据。     

Opportunistic preventive maintenance optimization for multi-unit series systems with combing multi-preventive maintenance techniques

This paper proposes a dynamic opportunistic preventive maintenance (PM) optimization policy for multi-unit series systems by integrating multi PM techniques. Two PM techniques, periodic PM and sequential PM, are considered. Whenever one of the units reaches its reliability threshold, a PM action has to be performed on that unit. At that time the whole system has to be stopped and PM opportunities arise for the other units of the system. An optimal PM practice is determined by maximizing the short-term cumulative opportunistic maintenance (OM) cost savings for the whole system. Numerical examples are given to show how this approach works. Finally, a comparison between the proposed PM policy and the other policies is given.     

Reliability Modeling and Maintenance Policy Optimization for Deteriorating System Under Random Shock

Performance degradation and random shock are commonly regarded as two dependent competing risks for system failures. One method based on effective service age is proposed to jointly model the cumulative effect of random shock and system degradation, and the reliability model of degradation system under Nonhomogeneous Poisson processes (NHPP) shocks is derived. Under the assumption that preventive maintenance (PM) is imperfective and the corrective maintenance (CM) is minimal repair, one maintenance policy which combines PM and CM is presented. Moreover, the two decision variables, PM interval and the number of PMs before replacement, are determined by a multi-objective maintenance optimization method which simultaneously maximizes the system availability and minimizes the system long-run expect cost rate. Finally, the performance of the proposed maintenance optimization policy is demonstrated via a numerical example.     

城市轨道交通车辆维修信息系统研究

为提升城市轨道交通车辆的投运率和运行可靠性,基于可靠性为中心维修和状态维修的先进理念,分析了城市轨道车辆维护、维修需求和现有信息系统存在的问题,提出了同时支持定修和状态修的车辆维修保障策略。采用基于状态的分布式维修软件结构模型,建立了城市轨道交通车辆维修信息系统的功能模块和系统架构,并对系统的具体部署进行了探讨。     

某车型电瓶寿命的建模与分析

根据某车队的维修记录，确定车辆的易损件．然后选择对电瓶进行分析研究，根据失效数据和截尾数据建立电瓶的寿命分布模型．在建立起来的可靠性模型的基础上对维修政策进行讨论，在费用优先的前提下制定合理的维修政策．     

多年道路养护策略的优化模型及应用

道路养护策略优化的目的是在有限资源约束条件下,使养护后的路面性能最大化.基于Markov链模拟路面在不同养护方式下的状态转移关系以及相应的费用关系,提出的有关整数规划模型优化路网养护策略,及对路面养护费用与路面性能关系的敏感性分析方法,具有较强的工程应用性,并有助于管理者在资金预算时的科学决策.     

关于做好危险货物运输车辆维修管理工作的思考

阐述了做好危险货物运输车辆维修管理工作应采取的措施,确保安全运输,保障人民群众生命财产安全。     

浅论桥梁支座的维修与加固

主要阐述桥梁支座的维修与加固。桥梁支座的维修与加固是一项必不可少的工作,应引起重视,保证桥梁整体稳定和行车安全。