Gothenburg Marieholm Tunnel
In the urban area of Gothenburg, the Marieholm tunnel passes beneath the river Göta Älv. The construction method chosen to build the motorway tunnel was an immersed tunnel. Large and deep excavation pits were built on both sides of the river. On the Marieholm side, the excavation pit was also used as a dry dock. Solexperts AG was commissioned by Züblin Scandinavia to develop a measurement concept for geotechnical monitoring and to implement it in close cooperation with the site managers.
Measurement concept
During the construction of the excavation pits and the driving of the piles, large deformations in the subsoil were expected. This was due to the slightly overconsolidated, soft clay, which was up to 100 m thick. In addition, there are sensitive buildings in the immediate vicinity of the construction site. Comprehensive monitoring with elaborate instrumentation of the immediate surroundings of the excavation pits and the neighbouring building complex was necessary. Dozens of high-precision automatic inclinometer (IPI) chains with a length up to 50 m were installed, which measure with rotation by an internal motor to compensate for drift and temperature. Reverse head extensometers were used to measure heave and settlement of the excavation base during the various load changes of the different construction phases. In addition, pore water pressure transducers, settlement transducers and stress/strain sensors were installed.
Realisation
More than 1500 sensors were connected to around 65 data loggers on the extended construction site. A WebDavis database was set up to manage the data and prepare it for presentation on the web. In addition, WebDavis was used to link and calculate different data sets and to send alarm signals in case of critical conditions.
Downloads
Monitoring
Monitoring
- Leica total station with Solexperts GeoMonitor
- Motion-controlled Leica and Zeiss optical digital levels
- Automatische Überwachung des Kalottengewölbes im Aeschertunnel
- Überwachung der BLS-Gleise in Frutigen mit Neigungssensoren
- Automatische Überwachung der Herrenbrücke Lübeck
- Messanlage zur Überwachung von Rutschhängen
- BLS-Tagbautunnel Engstlige Messtechnische Überwachung der Baugrub
- Erweiterung Rathausparking Bern Automatische Gebäude und Baugrundüberwachung
- Geotechnische Messungen und Versuche in Baugruben, A.Thut 1980
- SDL-Solexperts Data Logger
- GeoMonitor
- MRD – Manual Readout Device
- WebDavis
- Surveillance automatique de la voûte de la calotte du tunnel d’Aescher
- Surveillance automatique du pont de Herren à Lübeck.
- Geomechanische Messungen und Überwachung der Stützmauern/Pfahlwände Court und Roches
- Überwachung verankerter Stützbauten: Vorgehen, Interpretation, Massnahmen
- Überwachung verankerter Stützbauten: Vorgehen, Interpretation, Massnahmen
- GEOMECHANISCHE MESSUNGEN UND ÜBERWACHUNG WÄHREND DEM SPRENGVORTRIEB DER TUNNEL VAL D’INVERN, LA ROCHE UND SALGESCH
- Dichte Siedlungsräume und beweissichernder Einbezug der Nachbarliegenschaften in Projektierung und Bau: Massnahmen, Sinn und Zweck
- Geotechnische Überwachung des Tunnelvortriebes Luzernerring, Basel
- Auscultation d’une ancienne mine de fer lors d’une expérimentation d’ennoiement
- Auscultation d’une paroi clouée à Önzberg
- Uetliberg
- AUTOROUTE A16 LA TRANSJURANE
- l’église Saint-Bernard (Lyon)
- INSTRUMENTATION POUR LA SURVEILLANCE DE FALAISES A RISQUE
- Web-based data visualisation for tunnel and deep excavation monitoring
- Challenges to monitoring during construction of two inner city railway infrastructure projects
- Cloud-based 3D digital twin and fiber optic instrumentation of a pre-stressed concrete bridge for the continuous evaluation and monitoring of its structural condition
- Advanced Tailings Storage Facility (TSF) Monitoring Solution: Ensuring Safety and Compliance
- INSITU TESTING AND GEOMONITORING
Geotechnics
Geotechnics
- Decision Making in Tunneling Based on Field Measurements, Kovari 1993
- The Control of Ground Response, Milestones up to the 1960s, Kovari 2003
- Vibration measurement
- Surveillance des voies ferrées de BLS AlpTransit à Frutigen avec des capteurs inclinométriques
- Grundbau -Taschenbuch Geotechnische Messverfahren
- Risks in Tunnelling
- Instrumented test shaft in soft ground
- GEOTECHNICAL AND HYDROGEOLOGICAL MEASUREMENTS, SAFETY AND RISK IN SLOVAKIA AND SWITZERLAND
- Safety System in Urban Tunnelling; The Zimmerberg Tunnel
- Foundation analysis and restoration of a 13th century church founded on lacustrine clay
Displacements along profiles
- linewise measurements
- CLINO-Chain: Inclinometer Chain
- Trical software
- Solexperts Datenerfassung (PCD und SolLine-App)
- MRD – Manual Readout Device
Publications Sliding Micrometer and Trivec
- Gleitmikrometer, Kovari 1979
- Gleitmikrometer Gewichtsstaumauer Albignia, A. Thut 1981
- Gleitmikrometer, U-Bahn München, Kovari 1984
- Digitales Gleitmikrometer, Gleitdeformeter und Trivec
- Precision deformation measurements at large dams
- Trivec and Sliding Micrometer: fully digital instruments for geotechnical displacement and deformation measurement
- MONITORING OF DISPLACEMENT OF VIDE RANGE FOCUSED ON HISTORICAL BUILDINGS AND SLOPES
- USE OF GEOTECHNICAL MONITORING IN REMEDIATION PROJECT OF AN UNSTABLE SLOPE
- Continuous Strain Monitoring in the Rock Foundation of a Large Gavity Dam
- Monitoring the Nailed Soil Wall at Önzberg
Borehole extensometer
- SolExtensometer
- Modular-Extensometer
- Reverse Head Extensometer
- Fixed installable micrometer (FIM)
- Kontinuierliche Verformungsmessung vor der Tunnelbrust mit dem RH-Extensometer (RHX) und dem Modularen RHExtensometer (M-RHX)
- New instruments improve site characterization with time based measurements
- Displacement measurements ahead of a tunnel face using the RH Extensometer
Pile tests
- Ultrasonic measuring device
- Pile integrity tests and component tests
- Statische Pfahlbelastungsversuche Hardturmstadion Zürich
