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高速公路工程施工作业,采用沥青路面冷再生技术,为达到工程要求需做好过程化控制,实现技术的应用价值。现针对沥青路面冷再生技术应用问题,采取实例分析的方法,展开具体的论述,提出沥青路面冷再生技术应用质控的策略。首先,概述了沥青路面冷再生技术特点。其次,结合实例分析技术的应用。最后,总结沥青路面冷再生技术应用管理办法。 相似文献
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随着沥青路面的应用越来越广泛,沥青路面的损坏问题也越来越严重。根据调查发现,沥青路面在使用一段时间后,其损坏程度就会大大增加,必须及时进行维修,以此来延长沥青路面的使用寿命。在路面维修工程中,厂拌热再生施工技术是一种经济有效的方法。结合施工实例,主要阐述了厂拌热再生技术在路面维修工程中的操作要点及质量控制措施,可为相关工程提供参考。 相似文献
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在公路工程施工中,沥青路面冷再生技术有重要作用,为提高该技术应用效果,结合工程实例对公路工程沥青路面冷再生技术的应用进行研究。分析了测量放样、旧路面预处理、原材料选择、撒布水泥与乳化沥青、再生路面整形、碾压与养护等沥青路面冷再生技术应用要点。根据检验结果可知,通过合理控制上述要点,该项目的再生基层多项指标满足设计要求,沥青路面结构更加稳固,可保障车辆通行安全,可为同类工程提供参考。 相似文献
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为了提高沥青路面的养护质量,以开普封层技术为研究背景,对该技术应用与沥青路面养护工程要点进行探究。阐述开普封层技术应用优点,在分析沥青路面病害现状的基础上,从层间黏结性能、高温车辙性能两个方面对病害成因进行解析。依托某工程项目实例,详细解析开普封层养护技术工艺要点,以期给同类工程提供借鉴。 相似文献
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旧沥青路面冷再生施工技术充分利用了原本需废弃的沥青混合料,节约了资源,减少了材料成本投入,具有广阔的应用前景。文章基于旧沥青路面再生技术的研究现状,分析了不同旧沥青路面再生技术在公路改造工程中的适用范围,论述了就地冷再生技术的选用原则与施工技术方法,并结合某二级公路改造工程实例,阐述了旧沥青路面就地冷再生施工工艺的具体应用,以供类似工程参考。 相似文献
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本文结合东营地区农村公路养护工程中沥青路面就地冷再生技术应用情况,从工程实际出发,阐述了施工过程中沥青路面就地冷再生的技术原理、稳定材料的选用和应用成本的对比分析,以期为国内同行业公路养护工程起到借鉴作用。 相似文献
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随着我国现有大量的高等级公路进入大修阶段,以水泥为添加剂,对旧沥青混凝土材料现场进行冷再生基层技术在沥青路面大修工程中将会更加广泛的被应用,作者对该类工程经常遇到的一些技术问题和注意事项做出了总结。 相似文献
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为了对超薄磨耗层养护技术实践要点有全面了解,以便减少沥青路面病害问题出现,以某沥青路面养护工程为例,对超薄磨耗层养护技术工艺要点与技术控制措施进行解析,以期为相关工程提供参考。 相似文献
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Pedestrians as compared to vehicular traffic enjoy a high degree freedom of movement even in heavily congested areas. Consequently, there are more alternative links available to pedestrians between a given origin‐destination (O‐D) pair. This paper describes a study done by the University of Calgary to evaluate the factors affecting the choice of route on intra‐CBD trips or trips within the Central Business District (CBD). An origin destination survey conducted in downtown Calgary, Alberta enabled the identification of the most significant factors influencing the choice. These factors were analyzed in relation to the physical characteristics of the location, personal characteristics of the trip maker and the type of the trip. It appears that most people chose the shortest link and factors such as the level of congestion, safety or visual attractions were only secondary. This suggests that the length should be made a major consideration when planning and designing pedestrian links. 相似文献
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《Transportation Research Part A: General》1991,25(6):407-418
The main deficiency of most current modeling approaches to transportation can be identified as neglect of the integration of existing geographical knowledge in regard to the ex ante transport/land use modeling approaches, with its focus on territorial dynamics and theory development. This paper addresses this aspect of the problem by introducing a theoretical and methodological framework for the analysis of the interrelationship between land uses. The analysis attempts to determine to what extent the functional land use in a city can be considered an ordered pattern. The order sought does not rely on purely spatial configurations, but on the correlation of transportation and land use. The first section of this paper focuses on theoretical considerations. It stresses the fact that conventional approaches do not apply in the present context. It then suggests an alternative based on areas of influence and measured in terms of level of attractance of land uses. The second describes a procedure based on this alternative following the remarkable contribution of Hanjoul, Beguin and Thill. An application of this procedure to the analysis of Shanghai is then examined. Finally, an evaluation of the strategies for optimizing the interrelationship between land uses is presented. The paper concludes with a possible research agenda. 相似文献
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明确埋地管道防腐保温层的技术评价标准,对埋地钢质管道的安全运行,延长管道使用寿命具有重要意义。为了对埋地管道防腐保温层做出有效评价,从间接检测与开挖检测2个方面,结合现场检测数据,提出了基于防腐保温层的电流衰减率、绝缘电阻率、质量状况与厚度的分级评价标准及基于4种评价指标的综合评判方法。工程实践表明,该评价标准对防腐保温层是否存在失效能做出有效判断。 相似文献
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介绍了城市轨道交通工程中杂散电流不同的监测系统的构成,分析了集中式、分散式和智能型等监测系统的配置和功能,以及智能型实时在线监测系统的重要意义,为轨道交通工程杂散电流监测系统的选择与应用提供参考。 相似文献
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天然气自动计量系统有多种组态软件,由于软件的不相通性,造成了计量系统数据采集的通用性差、数据传输与入库的时效性差、数据利用的可靠性低.结合各组态软件的实际情况,从设计上充分利用Oracle大数据处理能力以及Partition(分区表)的特性,实现历史数据的存储,应用WebService与COM+数据访问组件提供多层数据访问架构,采用OPC与DDE工业数据交换协议,实现了各站场计量数据的实时上传,为连续数据采集和实时监控提供了可能,节约了改造成本. 相似文献
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Joseph N. Prashker 《Transportation》1979,8(4):329-346
Reliability of travel modes was found to be the most important characteristic of transportation systems in several attitudinal investigations of individual travel behavior. This paper represents the first part of a research effort aimed at gaining a better understanding of the characteristics of reliability of transportation modes in urban travel. In this research, reliability characteristics are identified; their importance relative to each other is assessed, and an insight into possible structure of an objective reliability index is discussed. The research is based on perceived values of reliability, which were identified through a large attitudinal survey conducted in the Chicago metropolitan area. 相似文献
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