基于大涡模拟的高架栈桥断面风载分析  

Analysis of Wind Flowing around Trestle Bridge Deck Based on Large Eddy Simulation Method

作　　者：孙芦忠[1] 尹洪波[1] 李霞[1] 柯解伟[1] 

机构地区：[1]解放军理工大学工程兵工程学院,江苏南京210007

出　　处：《港工技术》2008年第6期5-9,共5页Port Engineering Technology

摘　　要：应用大涡模拟分析波浪对某型高架栈桥断面风载的影响,并结合小波功率谱分析,发现随着波浪振幅的增加,栈桥断面的三分力系数受到的影响加大,而且升力系数和扭矩系数比阻力系数对波浪振幅变化更加敏感;3个系数的振幅平均值都随波浪振幅增加而减小。Using large eddy simulation method to analyze wind flow around trestle bridge deck, and with wavelet power spectrum analysis method, find that influence to the drag coefficient, the lift coefficient and the tensional moment coefficient will increase if wave amplitude increasing, and the last two coefficients will be influenced more acutely. The average numbers of these three coefficients decrease with increasing of wave amplitude.

关 键 词：大涡模拟 高架栈桥 数值波浪 小波功率谱 

分 类 号：U441.2[建筑科学—桥梁与隧道工程]