铁道标准设计2017，Vol.61Issue(5)：100-104,5.DOI:10.13238/j.issn.1004-2954.2017.05.022
跨海大桥小尺度下部结构非线性波浪荷载分析
Analysis of Nonlinear Wave Load on Small Size Substructure of Cross-sea Bridge
摘要
Abstract
To study the nonlinear characteristics of wave loads on such small size substructure as pile foundation and pier of the cross-sea bridge, N0.1 pier of Pingtan Bridge is taken for reference.Based on the N-S equation of incompressible fluid and VOF free surface tracking method, two-dimensional numerical simulation of nonlinear wave is conducted with FLUENT software to analyze the characteristics of velocity field and wave surface variations of nonlinear wave.The differences between linear and nonlinear wave loads on the single pile and the pier are compared with Morison equation.In order to further study the characteristics of nonlinear wave in shallow water, the influences of the nonlinear wave loads of piers of different diameters are investigated.The results of the study show that the nonlinear effect of the nonlinear wave is not obvious on the single pile in deep water, and the difference between linear and nonlinear wave loads is 14% with significant nonlinear effect on the pier.With the increase of diameter, hysteresis of peak nonlinear wave load occurs.The nonlinear wave load should be addressed in the design of the cross-sea bridge.关键词
跨海大桥/桥墩/非线性波浪荷载/数值模拟/Morison方程Key words
Cross-sea bridge/Pier/Nonlinear wave load/Numerical simulation/Morison equation分类
交通工程引用本文复制引用
房忱,李永乐..跨海大桥小尺度下部结构非线性波浪荷载分析[J].铁道标准设计,2017,61(5):100-104,5.基金项目
国家自然科学基金(51525804) （51525804）
四川省创新研究团队科研项目(2015TD0004) （2015TD0004）
