Digging deeper with monitoring

Case study

Digging deeper with monitoring - Terradata & Leica Geosystems AG - Case Study - Key Visual Winterthur

Author:Martin Rub,Lidijašpiranec和Katja Omlor

Swiss Federal Railways (SBB)initiated a long-term expansion project together with the city of Winterthur to increase the performance of the Winterthur railway station. Due to the increasing number of passengers deciding to go with this environmentally-friendly transport alternative – daily around 120.000 people – Switzerland’s fourth-largest railway station required a larger pedestrian underpass in the North for better entrances to the platforms, as well as an adjacent bicycle tunnel which connects the two parts of the city and is also leading to a large bicycle garage. The planned new pedestrian and bicycle underpass also included various stores for an enhanced shopping experience. For this complex project – especially when stopping the rail traffic was not an option – the SBB contractedARGESTRABurg(STRABAG AG and Burger Stahlbau AG) for the construction part, whereasTerradata AGwas chosen by the Contractor for the entire monitoring and surveying scope of the project.

The expansion has a functional and visual undertone: asides to raising the quality of travelling and living, this project is supposed to help turn the Winterthur train station into an attractive city gate entrance, connecting the old town centre and the new part of the city. The new pedestrian and bicycle underpass, a new logistic centre and an underground parking spot for cyclists will increase passengers’ safety and comfort when choosing this type of transport.

每当一个项目碰到人们的生活时,尤其是就安全性而言,选择最佳合作伙伴至关重要。


A daring project with high safety requirements

The new pedestrian underpass “Nord” at the Winterthur railway station passes under seven existing railway tracks. For this purpose the engineering consortium, encompassingLocher Ingenieure AG,F. Preisig Ag10:8 Architekten GmbH, created a concept of a 50-metre wide corridor - with 14 temporary railway bridges overpassing it during the four years of construction. Moreover, to safely guide the pedestrians during the duration of the project,PUWIengineering consortium planned a separate temporary steel bridge for the pedestrians. This temporary bridge needs to be monitored for safety reasons, too. Finally, this complex project also encompasses an existing car park above the train station, including an access ramp. The parking deck will be statically laying on top of the train station. In the underpassing area, the pillars have to temporarily support the construction of the new underpass ceiling and the pre-mentioned pillars for the parking deck.

通过监测更深入 -  Terradata和Leica Geosystems AG  - 案例研究 - 横断面

数字1: Cross-section of the new underpass and the temporarily supporting micropiles for the parking deck framework above. The visualisation also shows the parking deck and the temporary bridge (left and right) including anchors. The coloured points emphasise the monitored points. Drawing by Locher Ingenieure AG.

During the construction, settlement and displacements of the operating tracks,临时桥梁和现有的停车甲板(覆盖火车站)必须每15分钟进行永久监控。

As the railway needs to remain fully operational and safe, the monitoring systemTerradata当它检测到movem安装发送警报ents outside of the defined thresholds. This complex project combines not only measuring track deformation but also monitoring other building processes during the complete overhaul of the parking deck. For these reasons, the temporary bridges are monitored by magnetic reflective prisms at every end (blue points). In front and behind the temporary bridges, the rail tracks are monitored every 4.8 m (blue points). The temporary pillars, supporting the parking deck (magenta points), are monitored on four different height levels to detect possible settlements while excavating their micropiles.

Digging deeper with monitoring - Terradata & Leica Geosystems AG - Case Study - Concept of measuring

数字2:Terradata的概念,用于测量所有彩色监视点。Locher Ingenieure AG的绘画。

nitored area has to be expanded to neighbouring buildings too to prevent structural damage and ensure peoples’ safety. Terradata AG collects data using geodetic and geotechnical monitoring sensors. Based on the gathered data, 3D deformations are calculated (like twist and settlement of railways tracks and other typical railroad parameters).

Terradata & Leica Geosystems Case Study - Digging deeper with monitoring - Image 1

数字3: Leica Geosystems monitoring total station on a ceiling mounting plate.

Digging deeper with monitoring - Terradata & Leica Geosystems AG - Case Study - Bridges & micropiles

数字4: Left: A train passes the temporary bridges, supported by micropiles. Right: The transition zone of the track ballasts onto the temporary steel bridges. Both structures are measured by Leica total stations every 15 minutes over three years.


莫nitoring super package

Terradata依靠Leica Geosystems的总站及其地奇异监测亚博5分钟快三解决方案进行自动变形监测,其中一个关键部分之一是Leica Nova TM50 monitoring total station. It is the best instrument for monitoring railway operation – fast and quiet, barely ever getting noticed by the passengers on the platforms.

The equipment combination, chosen for the Winterthur site, was:

  • 7 Leica Geosystems自动监控总站亚博5分钟快三
  • 420玻璃精确的反射棱镜
  • 25 hydrostatic levels for building subsidence monitoring
  • 20个压力传感器以监视负载
  • 2个振动传感器以监视结构振动
  • 40米米以监视铁路建筑的影响的影响
  • 20个倾斜传感器来监视微孔

通过监测更深入 -  Terradata和Leica Geosystems AG案例研究 -  BIM模型

数字5: Left: BIM model of the underpinning construction of the railway building with its micropiles. Right: Excavation work where the building was pressed onto the temporary micropiles (BIM byF. Preisig Ag).

Digging deeper with monitoring - Terradata & Leica Geosystems AG - Case Study - TEDAMOS

数字6:TEDAMOS(Terradata的瑞士监控解决方案)Web查看器,所有用于铁路大楼基础的测量值。两个3D Leica总站监亚博5分钟快三视了立面。水平系统监视了现有建筑物的高度,并通过裂纹仪表测量了40个液压压力机的扩展方式。双轴MEMS传感器监测了微孔的倾斜度。监视项目是连续的(24/7),在激活负载压力的同时,测量间隔长达1分钟。

通过监测更深入 -  Terradata和Leica Geosystems AG  - 案例研究 - 时间序列的变形

数字7:例如,一个停车甲板监测点的变形时间序列,显示钢结构(DL组件)的季节性效果(扩大和收缩)和黄色,橙色和红色的警报水平。

Terradata & Leica Geosystems Case Study - Digging deeper with monitoring - Image 2

数字8: Leica Geosystems monitoring total station on a slanted pillar.


Choosing the right partner

Terradata AG瑞士最大的测量和监测服务提供商接受了这一激动人心的监测挑战。

“我们的解决方案针对早期检测和防御against potential dangers – we are specialised in ensuring safety where structures, infrastructures, soil and natural hazards play the main role,” said Martin Rub, Teamleader Monitoring. “The railway project in Winterthur allows us to apply our entire set of equipment and software. We’ve chosen Leica Geosystems’ monitoring solution because we always strive to keep our competitive edge.”

The main reason for choosing Leica Geosystems’ products was the quality of their total stations. In addition to the specialised Leica Geosystems monitoring software, Terradata also uses its proprietary developmentTEDAMOS(Swiss Monitoring Solution by Terradata) to visualise the data.

Terradata & Leica Geosystems Case Study - Digging deeper with monitoring - Image 4

数字9:除了自动监视外,还执行了大量的手动变形监控任务。


Innovation is the only future-proof strategy

Terradata AGhas a powerful company motto: “We measure and document – wherever buildings and soil play the main role.” The latter connects perfectly with Leica Geosystems’ slogan, “When it has to be right.” A strong equipment partnership during complex monitoring projects means that the customers need to be able to rely on their equipment 24/7. Terradata AG is eagerly expecting further technological innovations in the communication segment. Leica Geosystems is looking forward to additional exciting projects where safety is ensured with industry-leading hardware, software and service, all-in-all providing top-level监视解决方案.


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