3D Stability Model Test on Revetment Instability and Optimization

Abstract

2D wave model test was in common use for the verification of structure stability in coastal design in past decades. However, only positive wave could be simulated in 2D model and in practical many coastal engineering were damaged by oblique wave. The revetment stability was tested through 3D wave physical model for a coastal engineering in Dalian city. The result show that wave height in shallow water area would be larger than that in deep area under specific terrain. The stability of revetment armor block in shallow area may be worse than deep area under action of breaking wave in surf zone. The blocks in bottom fail in stability first and then the upper slide down. Oblique wave is more dangerous than positive wave. The necessity of 3D stability model test on verification and optimization of revetment design is reflected once more in this research.