An Internet-Based Multimedia Highway Information System

As a part of highway infrastructure management, photographic logging systems are used widely in highway departments. However, the technology associated with current photographic logging systems is largely based on analog video technology. New technologies in digital video, the Internet, and database management have provided opportunities to overcome the limitations of analog video and improve the accessibility and functionality of photographic logging and traditional engineering databases. This article describes a newly developed multimedia-based highway information system (MMHIS) and its implementations in the World Wide Web environment. MMHIS is an integrated database system combining traditional highway engineering site data with visual graphic and roadway videos. The objective of developing the Web-based MMHIS was to establish a Web site and a server to provide simultaneous information retrievals of the multimedia database through the Internet and the highway agency's internal computer network. This article presents the capabilities of MMHIS and discusses the implementation of a WWW-based MMHIS. It is concluded that it is cost-effective to establish a Web-based MMHIS for production purposes.     

高速公路外场视频监控系统方案设计

高速公路的外场高清数字化视频监控系统主要是利用监控设备重点对高速公路路面进行监控,为高速公路运行提供现代化管理手段,指挥调节交通流;快速反应发生的意外事件、交通事故：防止交通阻塞、减少交通延误、充分发挥高速公路的功能,及时为道路利用人员提供有效的交通信息。本文详细介绍了视频监控系统的前端监控设计、视频管理平台的设计、系统存储设计及网络传输设计等。高级工程师,国家一级注册建造师（机电）,国家高级项目管理师（CPMP）。     

山西省“十四五”发展智慧公路解决方案分析

围绕公路建设,利用新工具、新技术、新模式,打造公路建设基础设施和交通运行状态数字化监测体系,基于大数据的公路管理辅助决策体系与数据综合分析,从成本控制、质量控制、安全控制,信息管理、合同管理、采购管理、资金管理、信息安全、决策分析、运维保障等多维度打造领先实用、可推广、可落地的智慧公路方案,起到了大大提高公路交通的高效性、安全性、便捷性、绿色性的目的。     

多媒体网络视频数字监控系统

视频监控系统的发展经历了:①第一代:闭路电视系统构建的模拟系统;②第二代:数字信号控制的模拟系统;③第三代:以数字硬盘录像设备为核心的数字监控录像系统;④第四代:数字网络视频监控系统。比较了几种视频监控方案的优劣。着重介绍了多媒体网络视频数字监控系统的核心技术:MPEG-4多媒体应用标准、多点通信、实时传输、异构网络通信平台、嵌入式系统,以及多媒体网络视频数字监控系统的主要构成要素:网络视频编码器、采集工作站、总控工作站、监控服务器。最后介绍了一个网络视频监控系统的应用案例。     

公路工程沥青路面施工技术及质量控制研究

交通基础设施建设的加快带动了沥青路面的广泛运用,但沥青路面施工过程中的技术处理问题,往往影响着公路建设工程的质量,甚至造成生命和财产损失。本文就沥青路面施工技术及质量控制问题进行了探讨,并提出了自己的浅见。     

傍山公路改扩建工程路基路面病害及处置方案设计

近年来,公路设施建设一直作为我国各地区发展中的主要建设项目,本文就傍山公路改扩建工程路基路面病害问题进行分析,探讨如何设计出治理傍山公路改扩建工程路基路面病害的处置方案。     

热拌沥青混合料路面施工工艺研究

随着我国经济的飞速增长，作为交通运输纽带的现代公路也因其交通流量与行驶频度的急剧增加而对公路的质量要求越来越高，于是就应运而生了热拌沥青混合料路面，现结合工程实践，对热拌沥青混合料路面的施工工艺进行相关研究与讨论。     

Design Process Management

The objective of this article is to develop an electronic collaborative environment supporting cross‐disciplinary heterogeneous computer‐aided design (CAD) use. Design information flows, as a result of concurrent execution of an open‐ended set of applications, require both better communication and control for design effectiveness. This work reviews current capabilities in database transactions to support CAD/CAM and proposes a new architecture to support missing capabilities. In this article we outline the use of a process management module within a product modeling environment. The management and control of design information flows are addressed at three levels of abstraction: a conceptual framework for specifying and reasoning about design transactional flows, a comprehensive distributed object model of design processes, and a client‐server network‐based computing infrastructure supporting the process model.     

公路工程路基路面常见病害及防治对策

结合工程实践,对公路工程路基路面常见病害及其原因进行了分析,并根据原因提出了有效的防范对策,加强对公路施工质量的控制,从而减少病害的发生,保证公路行车的安全性和舒适性。     

108国道东观～义棠段一级公路设计要点

介绍了108国道祁县东观－介休义棠段一级公路的工程概况、设计标准和线路选定情况。阐述了在路基、路面、涵桥以及附属、交叉工程设计中，旧路拓宽改造、软弱地基处理、路面结构层及原有构造物改造等所采用的设计方法及其相应的处理措施。该路段的建成通车，将明显改善交通状况，促进我省经济建设的发展。     

重载交通沥青路面典型早期破损与成因分析

以国内几条典型的高等级公路沥青路面为例,依据路面现场普查和检测数据,分析总结了高等级公路沥青路面在重载交通条件下的典型早期破损类型,并重点从路面设计理论、轴载换算方面进行了成因分析,进而针对目前过渡阶段提出了对策和防治措施,并展望了今后路面研究需重点关注的几个问题,结论可为我国重载交通路面研究、设计施工提供参考。     

基于优化 DEA 模型对公路养护投资决策的有效性研究

为制定科学有效的养护决策,基于高速公路路面性能数据进行神经网络模拟预测了未来 5 个运营年限的路面性能,提出一种新的路面养护决策优化数据包络分析（DEA）模型。该模型以养护里程量、交通量和养护投入资金为输入指标,以路面使用性能恢复值为输出指标,对所提出的 13 种养护方案进行有效性评价,选出投入少、产出高的高效率方案。结果表明:综合考虑交通量、投入资金、产出效率和养护工作量等因素能够客观地筛选出高效率的养护方案。方案结果可为公路管理者做出合理养护决策提供有效依据。     

路面试验检测评估指标的应用研究

公路工程建设加快了区域交通水平的提升,满足了车辆行驶安全的运行需求。材料是公路结构中最基本的构成要素,保证材料质量对路面性能有着决定性的作用。公路正式通车使用之前,可通过对路面性能实施综合评估,确保合格后才能应用于实际的交通系统。本次以具体工程为例,对沥青路面试验检测工作展开分析,结合检测评估指标以衡量公路的整体性能,为公路调度应用提供科学的指导。     

Simulating pavement structural condition using artificial neural networks

This article aims to investigate the feasibility of incorporating of an artificial neural network (ANN) as an innovative technique for modelling the pavement structural condition, into pavement management systems. For the development of the ANN, strain assessment criteria are set in order to characterise the structural condition of flexible asphalt pavements with regards to fatigue failure. This initial task is directly followed with the development of an ANN model for the prediction of strains primarily based on in situ field gathered data and not through the usage of synthetic databases. For this purpose, falling weight deflectometer (FWD) measurements were systematically conducted on a highway network, with ground-penetrating radar providing the required pavement thickness data. The FWD data (i.e. deflections) were back-analysed in order to assess strains that would be utilised as output data in the process of developing the ANN model. A paper exercise demonstrates how the developed ANN model combined with the suggested conceptual approach for characterising pavement structural condition with regard to strain assessment could make provisions for pavement management activities, categorising network pavement sections according to the need for maintenance or rehabilitation. Preliminary results indicate that the ANN technique could help assist policy decision makers in deriving optimum strategies for the planning of pavement infrastructure maintenance.     

钢纤维混凝土路面在穿城改造中的应用研究

文章介绍了铜纤维的增强机理和钢纤维混凝土在穿城改造原有沥青路面中的应用情况。在对水泥稳定碎石基层和钢纤维混凝土面层试验结果的基础上，提出了行之有效的方法来解决由于铜纤维的掺入而引起的集束效应和团结现象。证实了钢纤维混凝土在城市道路改造工程、路面修补工程的可行性和钢纤维混凝土具有抗拉弯、抗裂、耐磨、耐疲劳等优良的路用性能。它不仅可使面层减薄，缩缝间距加大，改善路面的使用性能。而且还可节省工程维修、养护造价和施工工期的缩短。建议在路面标高受到限制、通车影响、施工工期等因素受到制约时。应优先考虑采用钢纤维混凝土路面。     

A multi-objective optimisation approach for sustainable pavement management

Addressing the multidimensional challenges involved in advancing the sustainability of pavement systems requires the development of optimisation-based decision support system (DSS) for pavement management with the capability to identify optimally sustainable pavement maintenance and rehabilitations (M&R) strategies. The main objective of this research work is to develop a multi-objective optimisation framework that hosts a comprehensive and integrated pavement life cycle costs–life cycle assessment model that covers the pavement’s whole life cycle, from the extraction and production of materials to construction and maintenance, transportation of materials, work-zone traffic management, usage and end-of-life. The capability of the proposed DSS is analysed in a case study aiming at investigating, from a full life cycle perspective, the extent to which a number of pavement engineering solutions are efficient in improving the environmental and economic aspects of pavement sustainability, when applied in the management of a road pavement section. Multiple bi-objective optimisation analyses considering accordingly agency costs, user costs and greenhouse gas emissions were conducted based on a multi-objective genetic algorithm. Pareto fronts were obtained for each analysis, originating a set of non-dominated maintenance and rehabilitation solutions. Posteriorly, a multi-criteria decision analysis method was used to find the best compromise solution for pavement management.     

基于GIS的公路安全信息管理系统研究及应用

利用GIS技术手段建立了唐山市道路信息电子数据库和道路网络,在Visual Stidio2008平台基础上,进行Web GIS唐山市公路安全信息管理系统的开发,实现了集城市公路安全评价决策分析、交通事故影响范围缓冲分析、交通事故紧急救援最佳路径分析等功能于一体的数字化公路安全信息管理系统。     

沥青路面施工新技术工艺探讨

随着我国道路交通事业的蓬勃发展，沥青路面施工技术已经被广泛运用于高速公路的路面建设中。本文结合笔者多年的施工经验，主要阐述了公路路面沥青施工技术要点，以供同仁参考。     

探讨沥青混凝土路面公路施工技术

沥青混凝土路面是公路施工中比较常见类型,这种材料的路面强度比较高,抗压能力强,可以有效的延长公路的使用寿命。沥青混凝土路面在施工的过程中,工序较为复杂,而且需要应用多项施工技术,为了保证施工的质量,施工单位必须积极引进先进的技术以及设备,还要提高施工人员的技术水平,做好监督与管理工作,这样才能保证每道工序的顺序进行,才能做到对工作流程的优化。随着城乡一体化建设速度的较快,城市建设部门增加了道路工程的数量,并且提高了对公路施工质量的要求,这对改善我国交通拥堵的现状有着积极影响。     

Instantaneous pavement condition evaluation using non-destructive neuro-evolutionary approach

In this paper, a hybrid neural network (NN)-genetic algorithm (GA) based non-destructive pavement auscultation method for instantaneous airfield infrastructure condition assessment is discussed. NNs are employed for finite element aided forward prediction of pavement surface deflections resulting from non-destructive test impulse loading and the GAs are used for global optimisation of the pavement structural parameters by matching the NN predicted deflections with the measured pavement response. This hybrid approach takes advantage of the non-linear estimation capability provided by neural networks trained using finite element (FE) solutions in modelling the stress-dependent behaviour of unbound pavement geo-materials while improving the robustness to measurement uncertainty through the application of genetic algorithms. The performance of the developed hybrid pavement auscultation technique is evaluated through extensive field studies conducted at a state-of-the-art full-scale airfield pavement test facility. The results show that this approach is promising for real-time condition evaluation of airfield pavement infrastructure systems.