Mike21软件桩群概化方法在高桩码头中的应用

码头前沿水域的横流过大容易导致船舶撞击码头或系船缆绳断裂,进而引发安全事故,因此研究码头前沿水域的流场状况对码头轴线合理选取和船舶的安全靠泊有着非常重要的意义。基于桩群概化方法,采用Mike21软件中的三角形网格水动力模块(FM模块)对曹妃甸矿石一期、矿石三期高桩码头附近的流场进行了数值模拟,并与现场实测流速、流向进行对比验证,确定了模型中的桩群影响参数。在此基础上,深入研究相邻高桩码头桩群阻力对周边海域的影响,并对码头前横流进行计算和分析。此方法实施简单、计算效率高,对大范围海域影响研究结果合理,对高桩码头前沿水域有关流速、流向的计算结果更加准确,对码头轴线合理选取和船舶安全靠泊有重要的参考意义。

Application of pile group simulation method based on Mike21 in high-piled wharf

Because of the large transverse currents in the wharf apron area,the ships can easily bang into the wharf or the mooring ropes break.Therefore,studying the flow fields in the wharf apron area is important for the reasonable selection of the wharf axis as well as the successful berthing.On the basis of pile group resistance,the flow field around the high-piled wharf in Caofeidian first phase and third phase ore terminal projects are simulated with the triangular net hydrodynamic modules(FM modules)in Mike21 software.Compared with the measured velocity and flow direction,the influence parameters of pile group in the model are determined.Moreover,the effect of the construction of pile wharf on the surrounding sea area is researched by the method,also the method can calculate and analyse the transverse currents in the wharf apron area.It has been proved to be an easy and high-effective method and the effect of the construction of high-piled structure on the large sea area is reasonable.It is helpful to the reasonable selection of the wharf axis as well as the successful berthing.