Combining geotechnical and geodetic data for monitoring

Author:Renata BarradasGutiérrez

Cities are evolving entities that need to adapt to accommodate the needs of the people, sustain economic functions and provide well-being and life quality. Adapting and building new infrastructure in cities with rich cultural heritage and city Old Towns pose a greater challenge as any construction works must maintain the integrity of historic structures.

Crucial monitoring, including historic structures, is happening around the world without most of us noticing. Such is the case in Heidelberg, where at the heart of its Old Town a historic retaining wall built around 1871 is being monitored. To cope with the need to accommodate cars, an underground car park is being constructed right next to the historic retaining wall and foundation. The construction required to dig a10米深的坑被无聊的桩加固in front of the historic retaining wall reinforced with anchors.

For this German city situated on the Neckar river, this retaining wall is important beyond its historic value – the structure restrains soil to stabilise a slope. Toensure its reinforcement works are stable, securing measures are adequate and the historic wall is preserved，需要监视。

Integrating new buildings into existing old structures

TPI Vermessungsgesellschaft MBH（TPI）, an engineering company for surveying and geoinformation based in the Rhine-Main area in Germany, took the challenge of ensuring a new underground car parking beneath the existing old structure wouldmaintain its integrity。

“We will play our part in preventing damage as long as any damage can be detected and technically measured in a timely manner,”外交说。TPI项目经理Dietmar Keizer。

To detect any tilts on the wall, capture any displacements in 3D and detect any settlement on the wall, TPI’s tailor-made monitoring solution includes:

• 一个Leica Geosystems Total Station TCRP 1201
• GeoMoS Monitor
• GeoMoS Now!
• 13 Leica GPR112 prisms
• 八轴的八个无线倾斜仪
• One meteo sensor

3^rddimension

Two different monitoring methods were set to guarantee independent checks. With a geodetic focus, the prism monitoring captures3D deformation allowing to detect any lateral movement or wall settlements。A total station is continuously measuring five reference and eight monitoring points. With a geotechnical focus, two-axis inclinometers aredetecting wall tilts。传感器连接在自我形成的网络网络中，每个节点都可以充当数据发送者和接收器。这样可以保证测量数据将以最快的方式到达网关，从将其上传到云并自动处理的位置GeoMoS monitoring solution。

All measured data, including data from the tilt sensors, angle and distance measurements to prisms and environmental data, such as temperature and air pressure, was与GeoMoS自动收集和分析。获取和处理所有数据报告不倾斜on the wall, hence, the reinforcements are good and stable enough and the team could proceed with the construction.

“ Geomos Monitor和Geomos现在！是真正复杂的产品，肯定会在特定领域进一步开发。bob综合app下载得益于我们在Leica Geosystems的联系的可靠支持，系统的设置非常简单。该程序的用户指南也非常好。即使在大约五个月后，我仍然会收到有关单个程序功能的技巧和支持。”said Keiser at TPI.

TPI工程师和测量师过去使用的Leica Geosystems总站，GNSS，Levels，激光扫描仪和激光跟踪器设备。这次量身定制的监控系统为专家提供了confidence to dig and build underground。在Leica Geosystems员工的合格支持下，安全可以存储和Web服务使TPI专家能够：

• Permanently and automatically measure without manual intervention
• 超过限制时自动评估并触发消息
• 通过互联网不断监视结果
• Enable designed stakeholders, such as their customer, access results.

Keeping everyone and everything safe

Excavations in urban areas pose risks to the people, structures and buildings on the surroundings. Fully-operating and reliable monitoring systems are essential to衡量任何偏差，做出更明智，及时的决策，并减轻任何风险。

由Leica Geosystems的专家支持，TPI Setdifferent monitoring methods with a solid reference framethat included additional reference points, to保证独立检查。With the confidence to detect any movement to the millimetre, experts can upgrade an urban area while preserving its cultural heritage.