Real-scale investigation of the kinematic response of a rockfall protection embankment
- 1Irstea, UR ETGR, 2 rue de la papeterie, 38402 St-Martin d'Hères, France
- 23SR, UJF-INPG-CNRS-UMR5521, DU Grenoble Universités, 38041, currently, FNTP, 3 rue de Berri – 75008 Paris, France
- 3Razel Society, Groupe Fayat, 3 rue René Razel, Christ de Saclay, 91892 Orsay Cedex, France
Abstract. This paper addresses the response of rockfall protection embankments when exposed to a rock impact. For this purpose, real-scale impact experiments were conducted with impact energies ranging from 200 to 2200 kJ. The structure was composed of a 4 m high cellular wall leaned against a levee. The wall was a double-layer sandwich made from gabion cages filled with either stones or a sand–schredded-tyre mixture. For the first time, sensors were placed in different locations within the structure to measure real-time accelerations and displacements. The test conditions, measurement methods and results are presented in detail. The structure's response is discussed in a descriptive and phenomenological approach and compared with previous real-scale experiments on other types of embankments.