深圳市光明新区华夏路市政工程综合管沟工程专项技术报告

该文以深圳市光明新区华夏路市政工程综合管沟工程为例,介绍了其设计原则与各项设计内容,以及信息检测与控制等技术,可供同行借鉴.     

深圳地铁8号线轨排井围护结构设计优化

针对深圳地铁3号线轨排井基坑施工中预应力锚索存在的安全隐患，考虑设计中的钢花管施工难度较大等原因，结合实际揭露地层，利用有限差分分析程序FLAC3D进行优化设计。结果表明，优化后基坑围护结构的各项性能指标均能满足设计要求，轨排井得以顺利安全施工，节省人力物力，方便施工，缩短工期。     

深港两地桥梁设计标准的比较

深圳与香港的桥梁设计标准存在较大的差异。本文结合皇岗—落马洲第二公路桥的设计 ,对深港两地桥梁主要设计标准作了系统的比较 ,着重介绍了香港标准的一些设计要求及两者标准的差异。     

深圳地铁3号线横岗车辆段双层总平面布置分析

研究目的:随着城市的建设发展,城市的土地利用资源越来越少,地铁车辆段双层布置可大量节约土地,提高土地的利用率。本文结合深圳地铁3号线横岗双层车辆段总平面的布置情况,对地铁车辆段双层布置后总平面的相应调整设计进行分析探讨。研究结论:车辆段双层布置后,虽能提高土地的利用率,但对总平面布置有一定的影响。本文提出在车辆段双层布置后,应增加一定的设施和运营管理措施,以提高出入段能力和洗车能力,满足运营的需要;可为以后车辆段双层布置的设计提供了借鉴。     

地铁动力照明系统负荷对运营成本的影响

通过深圳地铁开通运行的实测数据,反映出目前地铁设计中配电变压器容量普遍偏大的情况,并指出设计负荷计算偏大的若干原因;通过计算,阐述配电变压器偏大对运营成本的影响。     

深圳湾大桥结构健康及安全监控预警系统硬件概述

通过对已完成实施的深港西部通道深圳湾公路大桥结构健康及安全监控预警系统 (SZBHMS)的介绍,综合阐述了研发系统的构建与硬件内容.在系统中选用了基于美国NI公司虚拟仪器技术的数据采集设备硬件和基础软件产品,并采用了GPS技术时钟授时接收机等技术.结果表明:系统能够协调运行,实现了预期设计功能,保证了SZWBHMS系统长期运行的高可靠性、实时性以及技术的先进性.     

深圳地铁罗湖站折返能力分析及改进措施

在连续运营中,折返站的实际折返能力与理论模拟的设计折返能力存在差异。通过分析深圳地铁罗湖站折返进路和作业流程对折返能力的影响,在此基础上提出了相应的改进措施及对折返站设计的建议。     

Impacts of weather on public transport ridership: Results from mining data from different sources

The existing studies concerning the influence of weather on public transport have mainly focused on the impacts of average weather conditions on the aggregate ridership of public transit. Not much research has examined these impacts at disaggregate levels. This study aims to fill this gap by accounting for intra-day variations in weather as well as public transport ridership and investigating the effect of weather on the travel behavior of individual public transit users. We have collected smart card data for public transit and meteorological records from Shenzhen, China for the entire month of September 2014. The data allow us to establish association between the system-wide public transit ridership and weather condition on not only daily, but also hourly basis and for each metro station. In addition, with the detailed trip records of individual card holders, the travel pattern by public transit are constructed for card holders and this pattern is linked to the weather conditions he/she has experienced. Multivariate modeling approach is applied to analyze the influence of weather on public transit ridership and the travel behavior of regular transit users. Results show that some weather elements have more influence than others on public transportation. Metro stations located in urban areas are more vulnerable to outdoor weather in regard to ridership. Regular transit users are found to be rather resilient to changes in weather conditions. Findings contribute to a more in-depth understanding of the relationship between everyday weather and public transit travels and also provide valuable information for short-term scheduling in transit management.     

深圳地铁列车无人驾驶自动折返功能

本文对应用于深圳地铁的列车无人驾驶自动折返功能、设备及操作程序进行了简要介绍。     

SMA路面的油斑病害初探及预防措施

该文从SMA沥青混合料的拌和、施工等环节,提出了SMA路面的离析性油斑和迁移性油斑概念。结合深圳深南路路面修缮及交通改造等工程,运用Weissenberg效应理论和粘弹性力学及材料学原理,对SMA沥青路面的油斑病害做了初步分析,并提出了相应的预防措施。