Plate load tests
Plate load tests are used to determine the rock deformability for construction work in bedrocks. Large load plates are used which cover several fracture systems for representative test results in fractured rock. If possible, the opposite tunnel side is used as abutment of the test plate. In this way, double plate load tests can additionally be performed.
In addition to the measurement and control of the load on the plates, displacement transducers are installed which measure the displacement of the two load plates independently from each other. Furthermore, borehole extensometers are emplaced to measure the displacements behind the load plates in the bedrock. The tests are carried out according to the DGEG recommendation no. 6 or according to the ISRM recommendation.
Downloads
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
