TDPM
Towards the Dynamic PressureMeter
Publieke samenvatting / Public summary
Aanleiding
Monopiles supporting offshore wind turbines are currently over-designed, implying that too much steel is used.
Doelstelling
The Dynamic PressureMeter (DPM) will contribute to non-conservative design of monopiles by providing accurate values of in-situ shear stiffness and material damping ratio of the soil at the right strain level and at the right frequency of oscillation, provided that the penetration of the device does not induce significant soil disturbance.
Korte omschrijving
The current project is a first step towards developing a self-boring DPM, which does not disturb the soil. More specifically, a lab-scale prototype of the DPM unit will be developed which is needed to excite the soil in-situ at the right strain level and frequency. The project will provide a proof of concept of the DPM device and confirm its potential to accurately measure soil properties in a controlled (lab) environment.
Resultaat
Results will demonstrate the potential for a clear step beyond the state of art of in-situ soil testing as the self-boring DPM is expected to provide values of in-situ shear stiffness and material damping ratio without being hampered by soil disturbance.
Monopiles supporting offshore wind turbines are currently over-designed, implying that too much steel is used.
Doelstelling
The Dynamic PressureMeter (DPM) will contribute to non-conservative design of monopiles by providing accurate values of in-situ shear stiffness and material damping ratio of the soil at the right strain level and at the right frequency of oscillation, provided that the penetration of the device does not induce significant soil disturbance.
Korte omschrijving
The current project is a first step towards developing a self-boring DPM, which does not disturb the soil. More specifically, a lab-scale prototype of the DPM unit will be developed which is needed to excite the soil in-situ at the right strain level and frequency. The project will provide a proof of concept of the DPM device and confirm its potential to accurately measure soil properties in a controlled (lab) environment.
Resultaat
Results will demonstrate the potential for a clear step beyond the state of art of in-situ soil testing as the self-boring DPM is expected to provide values of in-situ shear stiffness and material damping ratio without being hampered by soil disturbance.