市政消火栓智能监测运维管理平台设计与开发235

设计开发了市政消火栓智能监测运维管理平台。研究设计了基于表示属性、基本属性、动态属性及维保属性的市政消火栓设备虚拟模型,实现了消火栓的动态监测及全周期数据的多维度立体呈现;基于设备虚拟模型开发了市政消火栓智能监测运维管理平台,并进行了应用,有效提升了市政消火栓系统的完整性及安全性。平台的设计开发实现了市政消火栓系统在全生命周期的闭环监管维护,并能提供多方位的服务,有助于资源配置方案优化,提高战时辅助决策能力,提升消防安全管理水平。     

深圳地铁三号线综合监控系统的特点

简单介绍深圳地铁三号线综合监控项目的内容,综合监控系统的意义,系统中群组监控、后备线控车站、集中维护的管理平台、分布式软件架构、模块化软件设计、联动等多种控制方式和多系统信息共享等特点,并根据项目特点及运营信息化需求,简述综合监控系统的发展趋势。     

滨海核电站循环水泵膨胀密封的应用分析

从描述循环水泵膨胀密封气囊技术改进入手,分析了膨胀密封现场组装成功率低的原因,讨论了不同形式膨胀密封对循环水泵安装和维修工作的影响,提出了国内部分核电站循环水泵膨胀密封的应用建议.     

基于Simpy 的部队装备维修仿真系统设计与实现

针对新形势下装备维修保障的优化问题,提出一种装备维修仿真系统的体系结构。分析部队维修保障过 程中关键要素之间的关系,阐述装备维修仿真系统的用户需求;以维修时间优化为例建立静态维修的任务分配优化 模型,设计动态维修条件下维修保障的过程模型,并采用层次分析法(analytic hierarchy process,AHP)和逼近理想解 排序法(technique for order preference by similarity to an ideal solution,TOPSIS)对不同维修分队的维修效能进行比较。 基于离散事件仿真库Simpy 实现了仿真系统的数据分析仿真功能,结合某型装备的维修保障数据进行了仿真验证, 仿真结果表明,该系统能为装备维修的流程设计、资源配置与优化等方面提供参考依据。     

绿色建筑全生命周期增量成本与效益研究

从全生命周期角度对绿色建筑与传统建筑的区别进行分析。进行理论分析的同时,也进行数字化分析。将绿色建筑相较于传统建筑的成本进行细化,并对绿色建筑的效益进行货币化分析,构建全生命周期成本与效益研究评价模型。通过南通检测中心绿色建筑实例对模型进行论证。     

Bridge condition modelling and prediction using dynamic Bayesian belief networks

The development of a condition-based deterioration modelling methodology at bridge group level using Bayesian belief network (BBN) is presented in this paper. BBN is an efficient tool to handle complex interdependencies within elements of engineering systems, by means of conditional probabilities specified on a fixed model structure. The advantages and limitations of the BBN for such applications are reviewed by analysing a sample group of masonry bridges on the UK railway infrastructure network. The proposed methodology is then extended to develop a time dependent deterioration model using a dynamic Bayesian network. The condition of elements within the selected sample of bridges and a set of conditional probabilities for static and time dependent variables, based on inspection experience, are used as input to the models to yield, in probabilistic terms, overall condition-based deterioration profiles for bridge groups. Sensitivity towards various input parameters, as well as underlying assumptions, on the point-in-time performance and the deterioration profile of the group are investigated. Together with results from ‘what if’ scenarios, the potential of the developed methodology is demonstrated in relation to the specification of structural health monitoring requirements and the prioritisation of maintenance intervention activities.     

Reinforced concrete and masonry arch bridges in seismic areas: typical deficiencies and retrofitting strategies

In recent years, appraisal of the condition and rehabilitation of existing bridges has become an ongoing problem for bridge owners and administrators in all developed countries. Reliable methodologies are therefore needed in the assessment and retrofit design phases, to identify the vulnerability of each bridge class. The specific problems of common arch bridge types are discussed herein, for both reinforced concrete and masonry structures, proper interventions for their static and seismic retrofitting are illustrated and several examples of applications are provided. Retrofitting is usually coupled with functional refurbishment, according to a methodological approach that takes into account bridge characteristics, state of maintenance and functional requirements, and environmental aspects connected with repair and strengthening systems.     

论如何提高维修天窗作业的效率和质量

分析了原平工务段目前天窗作业的现状,对天窗作业中存在的问题进行了分析,从计划、管理、组织等方面提出了提高维修天窗作业效率和质量的措施,以有效解决工务系统中的一系列问题。     

变频器在煤矿中的应用及维护

该文阐释了煤矿应用变频器的优势,重点论述变频器在煤矿中的应用及变频器的维护管理。     

基于可靠度和效费比的特种车辆维修策略优化方法

为解决军用特种车辆维修周期设定不当导致的维修成本增加、效率降低等问题,提出一种单个更换周期不完全预防性维修计划的方法.采用役龄回退因子和故障率递增因子的混合故障率函数描述部件故障率变化趋势,引入惩罚机制来减少偶然因素引起的故障维修延时问题,以可靠度和维修方式效费比为约束条件确定维修周期.以某型军用车辆为例,通过预先设定的可靠度阈值确定预防性维修周期,根据计算不同预防性维修方式的效费比选择维修方式,生成维修方案,并与传统方案进行对比.结果表明:该方法能有效降低故障率,提高维修工作效率,减少维修资源浪费.