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城市化进程中出现的公路街道化现象给吴江市公路路政管理部门带来了很大困难，本文提出开展公路交通环境与管理规划工作，采用定量管理法，对公路建筑控制区管理、非公路交通标志及路边构造物管理、公路交叉道口管理制定切实可行的控制指标，为吴江市公路路政管理提供确实依据，制止公路街道现象的蔓延．     

北京居民自行车出行意愿调查与发展对策

基于北京市自行车交通的发展现状,从基础设施、服务水平、思想观念及公共自行车发展 等方面,开展了北京自行车出行意愿的抽样调查,采用定性和定量相结合的方法,分析了目前北 京自行车交通存在的主要问题。结合北京市综合交通发展规划,从政策支持、发展规划、路权保 障、强化管理、公众参与、公共自行车发展等方面提出了自行车交通发展对策建议。研究结果表 明,定位不明确、规划不合理、设施不完善、环境污染重等已成为北京自行车交通发展的重要障 碍,未来应围绕“打造绿色出行之都”这一核心,结合北京公共交通的快速发展进程,在规划层 面明确发展目标,建立多部门之间的联合管理机制,完善相关标准,出台鼓励自行车出行的发展 政策,加快基础设施建设,强化安全管理,改善出行环境,加大绿色出行的宣传教育,促进绿色 消费,提升自行车交通在城市交通系统的作用和地位。     

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自然灾害经常造成运输过程中断,其损失的评估是一项十分重要而复杂的工作。本文从灾害造成的运输中断时间出发,对时间价值的内涵进行了分析;将灾害引起的运输中断及其导致的生产价值损失时间分为两个波及区,即生产人员损失价值和库存中断造成的损失价值。通过引入资源时间价值概念,分析了灾害中断运输所造成的直接与间接经济损失内涵,建立了基于资源时间价值的运输线路中断后社会生产价值损失估算模型,并结合算例给出了损失计算方法。本文研究可以为运输企业计算灾害带来的自身直接经济损失以及运输中断后引起的社会间接经济损失提供一种定量分析与估算方法。     

Strava Metro data for bicycle monitoring: a literature review

ABSTRACT

Monitoring bicycle trips is no longer limited to traditional sources, such as travel surveys and counts. Strava, a popular fitness tracker, continuously collects human movement trajectories, and its commercial data service, Strava Metro, has enriched bicycle research opportunities over the last five years. Accrued knowledge from colleagues who have already utilised Strava Metro data can be valuable for those seeking expanded monitoring options. To convey such knowledge, this paper synthesises a data overview, extensive literature review on how the data have been applied to deal with drivers’ bicycle-related issues, and implications for future work. The review results indicate that Strava Metro data have the potential—although finite—to be used to identify various travel patterns, estimate travel demand, analyse route choice, control for exposure in crash models, and assess air pollution exposure. However, several challenges, such as the under-representativeness of the general population, bias towards and away from certain groups, and lack of demographic and trip details at the individual level, prevent researchers from depending entirely on the new data source. Cross-use with other sources and validation of reliability with official data could enhance the potentiality.     

Estimation of delay variability at signalized intersections for urban arterial performance evaluation

Urban arterial performance evaluation has been broadly studied, with the major focus on average travel time estimation. However, in view of the stochastic nature of interrupted flow, the ability to capture the characteristics of travel time variability has become a critical step in determining arterial level of service (LOS). This article first presents a stochastic approach that integrates classic cumulative curves and probability theories in order to investigate delay variability at signalized intersections, as a dominant part of the link travel time variability. This serves as a basis for arterial travel time estimation, which can be obtained through a convolution of individual link travel time distributions. The proposed approach is then applied in the estimation of travel time along one arterial in Shanghai, China, with abundant automatic vehicle identification (AVI) data sources. The travel time variability is evaluated thoroughly at 30-min intervals, with promising results achieved in comparison to the field measurements. In addition, the estimated travel time distributions are utilized to illustrate the probability of multiple LOS ranges, namely, reliability LOS. The results provide insights into how we might achieve a more reliable and informative understanding of arterial performance.     

泉州晋江斜拉桥主梁边跨合拢段施工

介绍泉州晋江斜拉桥的概况及边跨合拢施工技术、施工流程等。     

基于系统集成理论的城市道路景观设计

在我国城市道路景观实践过程中,由于建造时序的不同,城市道路的“景观破碎、缺乏集成”和“豪华奢侈、脱离实际”,不利于城市系统的和谐发展。鉴于此,本文在深入分析城市道路景观建设目标的基础上,独辟蹊径从系统范畴的角度探讨了一种“集成”的道路景观设计理念,为城市道路景观的建设提供了一个新的思路。     

路基边坡风化与防护

对路基边坡风化与防护进行了阐述.     

桩基施工中的坍孔原因与预防措施

对在一般河流上钻(冲)孔过程中出现坍孔原因进行分析,并提出了坍孔预防措施.     

新时期高职院校党建工作存在的问题及对策

文章通过分析目前高职院校党建工作存在的发展不平衡、学生党员入党前后的形象不和谐、学生党员整体作用不明显等问题,提出了深入基层宣传、抓好学生党员再教育、推进党员责任区工作、发挥教师党员教书育人作用以及加强流动党员管理等对策。