山区水毁桥涵的快速修复分析

山区地质条件复杂,汛期极易造成桥涵水毁,尽快修复水毁桥涵是公路人的重要职责。结合山区桥涵的不同水毁类型,提出了相关的解决措施,为如何加快山区桥涵的修复提供参考。     

公路工程桥涵水毁问题探析

针对青海省近几年公路水毁修复及整治工程施工过程,提出桥涵水毁病害产生原因及相应防治技术措施,为解决公路桥涵水毁问题提供参考。     

公路水毁成因与防治对策

公路水毁主要有路基坍塌、路基沉陷、桥涵破坏等3种类型,详细阐述了各类水毁发生的原因以及探讨对各类水毁的防治措施.     

浅谈公路水毁的成因及防治措施

公路水毁主要有路基沉陷、路基坍塌、桥涵破坏、防护与加固工程损坏。公路水毁要以预防为主,及时清除水毁隐患,防患于未然。只要能从公路的设计、施工、养护等方面重视水毁,采取的措施得当,公路水毁将会得到有效控制。     

公路水毁成因与防治对策

公路水毁主要有路基坍塌、路基沉陷、防护与加固工程损坏、桥涵破坏等4种类型,详细阐述了各类水毁发生的原因以及探讨对各类水毁的防治措施.     

公路水毁的成因及防治措施

公路水毁主要有路基沉陷、路基坍塌、桥涵破坏、防护与加固工程损坏等4种类型,水毁要以预防为主,及时清除水毁隐患,防患于未然.只要能从公路的设计、施工、养护等方面重视水毁,采取的措施得当,公路水毁将会得到有效控制.     

福建公路水毁的成因与防治

公路水毁以其点多、面广、破坏性强困扰人们.本文以福建2010年6、7月间发生的特大暴雨洪水造成的公路水毁为引,在归纳水毁病害分布和破坏形式的基础上,剖析了水毁成因,并结合区域地形地质气象条件总结了防水毁设计的关键技术.提出了公路水毁的综合防治对策措施.     

台风引起的滨德高速公路路基边坡水毁抢修、加固措施

受台风"达维"影响,刚建成通车的滨德高速公路路基边坡水毁严重,在现场调查路基边坡水毁的基础上,对路基边坡水毁进行了成因分析,归纳提出公路路基边坡水毁的破坏形式,并提出相应的灾后恢复加固措施。     

黄土路堤高速公路加宽工程中的水毁防治措施

黄土地区高速公路加宽工程中新旧路基在汛期施工中易遭受雨水破坏。文章总结了水毁的主要形式,分析了水毁发生的原因,提出了具体的预防和处治措施。     

小桥涵混凝土外观缺陷的防治

结合实际工程经验,叙述了小桥涵施工中采取有效措施保证和防止质量问题,所述措施具体、可行。     

高速公路改扩建工程水土保持监测与评价

开展水土流失监测是水土保持监管的重要手段。文章以广西沿海高速公路改扩建工程一期工程水土保持监测实践为例,分析了工程建设水土流失特点,介绍了水土保持监测技术和方法,并通过对工程实例监测结果的分析评价,提出了水土保持监测工作中易出现的问题及相应的解决方案。     

Discretionary activity time allocation of individuals between in-home and out-of-home and between weekdays and weekends

This paper formulates a model for the allocation of total weekly discretionary time of individuals between in-home and out- of-home locations and between weekdays and the weekend. The model formulation takes the form of a continuous utility-maximizing resource allocation problem. The formulation is applied to an empirical analysis using data drawn from a 1985 time-use survey conducted in the Netherlands. This survey gathered time-use information from individuals over a period of one week and also collected detailed household-personal socio-demographic data. The empirical analysis uses household socio-demographics, individual socio-demographics, and work-related characteristics as the explanatory variables. Among the explanatory variables, age of the individual and work duration during the weekdays appear to be the most important determinants of discretionary time allocation.     

在用油气田埋地油气管道的完整性检测与评价

完整性检测评价能提前发现管道运行过程中存在的风险和缺陷,保障管道的安全平稳运行。文中介绍了完整性检测评价的方法及内容,以某条输气管道为例,开展了管道的数据收集、高后果区识别、风险评估及完整性评价应用,为同类检测评价工程提供参考。     

船检履约与应对IMO强制审核要点与措施研究

为促进全球海上安全和防污染相关国际公约的有效执行,国际海事组织于2009年批准了"IMO成员国自愿审核机制"强制化,我国将于2021年接受IMO的强制审核。船检占强制审核政府义务条款大部分内容,其被视为IMO进行强制审核的重点领域。因此,本文拟针对IMO履约规则及相关国际公约中有关船检的管理要求,对我国海事船检履约情况进行评估,分析我国船检海事立法与管理方面存在的问题,提出我国针对船检履约与应对IMO强制审核的要点及改进措施,以满足2021年IMO强制审核的要求。     

Freight Data Assembling and Modeling: Methodologies and Practice

Abstract

In comparison to personal travel, freight movements within large metropolitan areas are much less studied. Most conventional transportation models and planning analysis that disregarded freight flows have been criticized on the plausibility of their results and conclusions. To alleviate these problems, this study proposes a non-survey based approach to assemble and process freight data in a systematic way. A freight origin–destination (OD) matrix of freight flows can be developed using secondary data sources. The estimated freight flows can be loaded together with conventional passenger flows onto the regional highway network of a large metropolitan area. As a case study, this non-survey based approach was applied to build a freight OD and study the traffic flows in Los Angeles. It concluded that this approach can be used to analyze urban freight movement in a low-cost way in which planning agencies can overcome the common omission of freight flow information in their transportation plans.     

水力旋流器及其在油料储运中的应用

水力旋流器作为分离设备,主要是利用旋流产生的离心力对密度不同的介质进行分离,在石油工业方面得到了广泛的应用。主要介绍了水力旋流器的工作原理、研究现状和应用前景,分析了水力旋流器在油料储运方面的主要用途和工艺流程。     

Well-being and Transport: Taking Stock and Looking Forward

ABSTRACT

It is only recently that researchers have attempted to directly link transport to models of well-being and in turn try to map transport's linkages to well-being outcomes. This paper seeks to add to this new literature by introducing a dynamic model of well-being, which highlights the different domains that make up well-being, and in turn — through providing one of the most holistic and comprehensive discussions of the current well-being literature — provide an evaluation of our current understanding of transport's relationship to well-being. The paper also seeks to highlight the different dimensions and complexities of seeking to monitor and improve well-being through transport policy. It will in turn be argued that the varied and complex sets of outcomes that arise from transport policy interventions, and the multiple ways in which they affect well-being, make a well-being approach (that measures policy outcomes in terms of units of well-being) of particular value for policy-makers. However, due to the complexities in comparing positive well-being outcomes, it is argued that the best use of well-being evidence for the transport sector may be to try to minimise the negative effects on well-being caused by policy outcomes.     

浅谈农村公路桥梁养护与管理对策

文章总结了＂十一五＂期间广西岑溪市农村公路建设取得的成绩,分析了当前岑溪市农村公路桥梁养护与管理的现状及存在问题,提出了＂十二五＂期间岑溪市农村公路桥梁养护与管理的相关对策。     

公路绿化与环保的研究分析

为推动公路建设水平,确保公路正常运营和沿线生态环境可持续发展,文章总结了公路绿化的特点和功能,从安全性、经济性、生物多样性、景观性等方面分析了公路绿化设计的原则,并探讨了公路中央分隔带、路基边坡、互通立交、服务区的绿化设计内容,从公路环保的重要性,认知公路环保的内容、功能及意义,并多方角度的加以分析和采取措施,达到预期效果,把建设和环境紧密协调统一。并对公路环保的设计理念、评价指标、评价方法及施工阶段的环保措施进行了论述。     

油气长输管道壁厚计算及选用

在油气长输管道设计中,管道的壁厚设计计算和选取直接影响到管道输送安全和工程投资.针对油气长输管道壁厚计算因输送介质不同、输送温度不同、输送压力不同及处于不同地段而产生的差异,归纳总结出油气长输管道普通线路段、穿跨越段和站场部分管道壁厚计算方法,也总结出了在管道壁厚的选取中需要注意的问题及应用的规范.