Numerical study of wave loads on a caisson-pile-deck composite structure over permeability seabed |
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Authors: | Email author" target="_blank">Chuan-sheng?GuoEmail author Ning-chuan?Zhang Yu-guo?Pei |
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Institution: | [1]State Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology, Dalian 116024, Liaoning, China [2]Key Laboratory of Engineering Sediment of Ministry of Communications, Tianjin Research Institute of Water Transport Engineering, Tianjin 300456, China |
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Abstract: | To get the accurate wave loads on wharf composite structure, the wave force on small-scale piles and the uplift force on lower
surface of caisson must be considered. Based on the Reynolds averaged Navier-Stokes (RANS) equations, the pore media theory
and the volume of fluid (VoF) method, a three-dimensional numerical model is established. The model has been developed to
simulate wave interaction with a composite structure including caisson, piles and deck. The numerical results agree very well
with the experimental data on total force. The spatial distributions of the non-dimensional wave height and the maximum of
wave pressure on surface of composite structure are presented and discussed. The effects of relative caisson length, relative
wave height and relative caisson height on horizontal wave force are given. The result indicates that the horizontal wave
force achieves maximum value at the relative caisson length of 0.18 and increases linearly with the increase of the relative
caisson and wave height. It is proved that the model is an accurate and efficient numerical tool to investigate different
problems of wave-structure interaction. |
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