波浪荷载作用下桩柱动力响应分析

Pile Dynamic Response Analysis Under Wave Loading

参照大连理工大学海动研究室的实验条件和数据,基于Workbench平台,应用FLUENT流体模拟软件,通过UDF编写二阶Stocks波浪方程进行波浪模拟。建立三维数值水槽模拟原型实验,获得了作用在柱体上的正向力和横向力的变化曲线,与真实实验数据比对良好。通过监测获得波面处水质点运动曲线,发现水质点运动不是类正弦变化,而是有规律的"二次跳跃"变化;通过对柱体结构动力响应分析,得到了位移响应曲线,并给出了工程建议。

According to the laboratory experimental data from Dalian University of Technology,based on the workbench platform,this paper adopted the software of fluent to simulate the fluid through the UDF write second-order stocks wave equation. A three dimensional numerical flume simulation prototype was developed to gain the positive forces acting on the cylinder and the change of the transverse force curve,the result show that good and real experiment data comparison. Wave were obtained through the monitoring of water quality point motion curve,found water points movement is not a kind of sinusoidal variation,but ＂the second leap＂which change regularly; through the cylinder structure dynamic response analysis,we obtained the displacement response and also presented some engineering suggestions.