施工过程中的铁路和平台监控

Authors: Sandra Kombouare, Steven Thurgood & the Oxygen agency

New monitoring methods

地点
Gare de la Croix de Berny, RER B, Antony (92), FRANCE

项目期间
2018年10月 - 2019年7月

RATP	轨way transport operator in Paris region
Brézillon	Construction company, subsidiary of Bouygues, expert in housing engineering, education, health, transport, industry and environment.
GEOFIT	Geospatial data acquisition and processing land and engineering surveying company.

RATPenlisted construction companyBrézillon在一辆现场铁路上进行拆除步行桥，建造赛道下面的替代地下通道，以及在克罗伊斯德伯利站的乘客拆迁和重建，在法国巴黎附近。

Brézilloncontracted the services ofGEOFIT完成土地和工程调查工作的工程，包括监测9个月建设过程中铁路轨道和平台的稳定性。

GEOFITwere confident to meet the challenging technical standards ofRATP，作为建筑项目的一部分，所需的保证监测结合大地测量和岩土工程仪器。仪器在项目监测规范中详述。

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The project specific solution

GEOFIThave experience in the use of new and advanced technologies, thus designing and operating hybrid instrumentation was a welcome challenge. They were awarded the contract to undertake the land and engineering surveying operations of the project, 80% of which were dedicated to the monitoring of the construction works at the station.

Mr Alexandre Toubois, Head of Infrastructures & Monitoring at GEOFIT他的团队负责监控铁路轨道几何形状，平台，周边基础设施和临时作品在拆迁和施工阶段。

使用技术的组合，在与Leica Geosystems法国的监测专家咨询后，开发了自动化监控解决方案，组合徕卡新星TM50总站bob appleand WiSen wireless sensors.

知道要求快速两分钟reading frequency for specific assets, a hybrid monitoring solution was developed by combining continuously operating automated total stations (measuring 3D prisms non-stop) and a dynamic reading interval solution using WiSen sensors (tilt and crack gauges).

它们将监控传感器的阵列安装在铁路轨道，平台和其他结构（站建筑物，架空电气化支撑柱和现有的结构裂缝）上。

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硬件和软件

• 2x徕卡新星TM50
• 30x WiSen wireless tilt meters
• Leica GeoMoS Monitor
• 徕卡GeoMoS现在!

Data from these sensors was managed in a single interface (Leica GeoMoS Monitor) and made accessible to the client through the徕卡GeoMoS现在!visualization platform.

Using these systems, a team of experts was able to obtain frequent and reliable observations under all conditions. The monitoring made it possible to follow precisely the effect of the construction on the railway tracks and associated structures. Wireless tilt sensors were utilized, measuring relative displacement data of the railway track for automated computation for rail geometry data (CANT & TWIST).

The total station prism monitoring provided absolute displacement data, validating the relative data and allowing for further railway geometry computations to be completed. In addition monitoring data regarding associated structures and settlement was computed using the information from the 3D prism observations. TheLeica Geomos软件套房使传感器控制，数据采集，计算和事件管理。该软件在将所有数据源的实时从集成解决方案计算到单个源中的变形。用户能够配置单个元素触发值和报警操作，从而在变形超过指定阈值时提供警报。

使用这些仪器及其整合Leica Geomos软件套房GEOFITwas able to meet the expectations of their client for reporting and alarming of any deformation detected with the assets.

GEOFITwas able to ensure the smooth running of the work by analysing the data collected and by informing the operator and the construction company of any change. This complete instrumentation & monitoring solution for the railway environment allowed the work to be carried out on time, without causing any inconvenience to station users. The monitoring not only ensured the 3rd party user safety, but also ensured the safety of the various stakeholders and construction operatives present at the site.

客户BrézillonandRATP欢迎使用Geofit安装和操作的技术实施此组合的创新解决方案，该技术允许工作牢固地进行，没有延误。

For more information contact the monitoring solutions specialists at Leica Geosystems.