Digging deeper with monitoring
Case study
Author:Martin Rub，Lidijašpiranec和Katja Omlor
Swiss Federal Railways (SBB)与温特图尔市一起启动了一个长期扩张项目，以提高温特图尔火车站的性能。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和Burger Stahlbau AG）构造部分，而Terradata 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。
一个有高安全要求的大胆项目
Winterthur火车站的新的行人地下通道“ Nord”在现有的七个铁轨下通过。为此目的，工程联盟包括Locher Ingenieure AG，，，，F. Preisig Ag和10:8 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.
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。
由于铁路需要保持完全运行和安全，监视系统Terradatainstalled sends alerts as soon as it detects movements 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.
数字2：Terradata的概念，用于测量所有彩色监视点。Locher Ingenieure AG的绘画。
The mo精密的区域也必须扩展到邻近的建筑物，以防止结构性破坏并确保人们的安全。Terradata AG使用大地测量和岩土监测传感器收集数据。根据收集的数据，计算了3D变形（例如铁路轨道的扭曲和沉降和其他典型的铁路参数）。
数字3：Leica Geosystems监视天花板安装板上的总站。
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.
监视超级包装
Terradata依靠Leica Geosystems的总站及其地奇异监测bob apple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监视总站。它是监视铁路运营的最佳工具 - 快速而安静，几乎没有被平台上的乘客注意到。
为Winterthur现场选择的设备组合是：
- 7 Leica Geosystems自动监控总站bob apple
- 420玻璃精确的反射棱镜
- 25hydrostatic 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
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）。
数字6：特达莫斯Web Viewe(由Terradata瑞士监控解决方案)r with all measurements for the underpinning of the railway building. Two 3D Leica total stations monitored the façade. A water levelling system monitored the height of the existing building, and the expanding way of the 40 hydraulic presses was measured by crack meters. Biaxial MEMS sensors monitored the inclination of the micropiles. The monitoring project was continuous (24/7) with a measuring interval of up to 1 minute while activating the load presses.
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。
数字8：Leica Geosystemsmonitoring total station on a slanted pillar.
选择合适的合作伙伴
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。
“Our solutions aim at early detection and defence 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.”
选择莱卡混沌之间的职业的主要原因ducts was the quality of their total stations. In addition to the specialised Leica Geosystems monitoring software, Terradata also uses its proprietary development特达莫斯（Terradata的瑞士监控解决方案）可视化数据。
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 AG拥有一个强大的公司座右铭：“我们衡量和文件 - 无论建筑物和土壤在任何地方都起着主要作用。”后者与Leica Geosystems的口号完全连接，“当必须正确时。”在复杂监控项目中，强大的设备合作伙伴关系意味着客户需要能够依靠24/7的设备。Terradata AG急切地期望在沟通部门进行进一步的技术创新。Leica Geosystems期待着其他令人兴奋的项目，这些项目可以通过行业领先的硬件，软件和服务来确保安全，全力提供顶级监视解决方案。
有兴趣监视吗？请随时阅读进一步的案例研究，显示我们的客户如何使用我们的解决方案来改善其监视工作流程：
