施工期间的铁路和平台监控

Authors: Sandra Kombouare, Steven Thurgood & the Oxygen agency

新的监视方法

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

Project period
2018年10月 - 2019年7月

RATP	巴黎地区的铁路运输运营商
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.

RATP入伍建筑公司Brézillon为了在一条现场铁路上拆除行人桥，建造了在轨道下方的替换地下通道穿越，并在法国巴黎附近的Croix de Berny车站拆除了乘客的建筑物。

Brézilloncontracted the services ofGeofitto complete land and engineering survey works for the scope of the project, including monitoring the stability of the railway track and platforms during the 9 month construction process.

Geofit有信心符合具有挑战性的技术标准RATP, who as part of the construction project required assurance monitoring combining geodetic and geotechnical instrumentation. The instrumentation was detailed in the monitoring specification for the project.

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这project specific solution

Geofit在使用新技术方面有经验，因此设计和操作混合仪器是一个受欢迎的挑战。他们被授予该项目的土地和工程测量业务的合同，其中80％致力于监视车站的建筑工程。

GEOFIT基础设施和监视主管Alexandre Toubois先生和his team were tasked to monitor the railway track geometry, platforms, the surrounding infrastructure and the temporary works during the demolition and construction phases.

在与Leica Geosystems法国的监测专家进行咨询之后，使用技术组合，开发了自动监测解决方案，结合了Leica Nova TM50总亚博5分钟快三站和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).

他们将监视传感器阵列安装到铁轨，平台和其他结构（车站建筑物，高架电气支持柱和现有结构裂纹）。

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Hardware and Software

• 2倍Leica Nova TM50
• 30x WiSen wireless tilt meters
• Leica Geomos显示器
• 现在，Leica Geomos！

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

总站Prism监视提供了绝对位移数据，验证了相对数据并允许完成进一步的铁路几何计算。此外，使用3D PRISM观察的信息计算有关关联结构和结算的数据。这Leica GeoMoS software suiteenabled sensor control, data acquisition, calculations and event management. The software calculated deformation from the integrated solution in real time combining all data feeds into a single source. Users were able to configure individual element trigger values and alarm actions thus providing alerts when deformation exceed a specified threshold.

Using these instruments and their integration within theLeica GeoMoS software suiteGeofit能够满足其客户对资产检测到的任何变形的报告和警觉的期望。

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.

ClientsBrézillon和RATPwelcomed the implementation of this combined innovative solution using technologies installed and operated by GEOFIT, which allowed the work to be carried out securely with no delays.

有关更多信息，请联系Leica Geosystems的监视解决方案专家。