Monopiles are submitted to axial and horizontal cyclic loads during their service life. Dimensions of the foundation depend on the design method, in order to optimize the cost of it a reliable method should be used to di the design.
Experimental and numerical data from all work packages will help to better understand the behavior of a monopile under cyclic load. This information will allow developing a reliable method to that takes into account the complexity of the soil response mechanism.
Experimental and numerical data from all work packages will help to better understand the behavior of a monopile under cyclic load. This work package has two main objectives:
- Develop a tool capable of predicting the displacements and efforts in the monopile when applying a cyclic load and;
- Validate this tool through experimental data.
Using SOLCYP data based on in-situ tests, a new dimensioning method considering t-z curves will be developed, for piles under axial cyclic load. Data from SOLCYP+ tests will help developpe a constitutive model to take into account the resistance degradation due to transversal cyclic load, a new model of “p-y” curves will be developed.
In order to understand the pile’s behavior on chalk soil, a numerical model and simple tools capable of representing the behavior of a pile under axial and lateral load will be developed. These tools will be recommended to be used by engineers for dimensioning piles in chalk.