防浪桩布放方案对波浪力影响的数值分析

Numerical Analysis on Effect of the Layout Schemes of Breakwater Steel Sheet Piles upon Wave Forces

针对某海工项目施工中支护钢板桩遭遇涌浪波浪力发生严重倾斜的问题,拟采用现场钢板桩排成直立防浪桩墙,分析不同的防浪桩布放方案对减小支护桩波浪力的影响,基于黏性数值模拟的CFD方法建立三维数值波浪水槽,采用SST k-ω湍流模式和VOF方法捕捉自由面,模拟涌浪在支护钢板桩和防浪钢板桩中的传播。在不同浪向角和不同防浪桩布放方案下,计算3根指定支护钢板桩所受的波浪力;分析这些波浪力的变化,从而优化出防浪钢板桩的布放方案。

In order to solve the problem of severe tilting of steel sheet piles caused by swell wave force in the construction of a marine project,it was proposed to use steel sheet piles to form an upright wave breakwater wall.The effect of the layout schemes of the breakwater steel sheet piles on the wave forces of the supporting steel sheet piles was analyzed.Based on the viscous numerical simulation CFD method,a numerical wave flume was established.Adopting SST k-ωturbulent model,and using VOF method to capture free surface,the swell propagation through the supporting steel sheet piles and the breakwater steel sheet piles was simulated.Under different wave angles and diffident layout schemes of the breakwater piles,the swell forces were computed on 3 designated supporting piles.The change of these swell forces was analyzed,so as to optimize the layout scheme of the steel sheet pile.