西南交通大学学报2018，Vol.53Issue(2)：266-271,6.DOI:10.3969/j.issn.0258-2724.2018.02.007
基于绕射理论的大尺度桥墩波浪力计算方法
Research of Calculation Method for Wave Forces Acting on Large-Scale Bridge Piers Based on Diffraction Theory
摘要
Abstract
In order to make the MacCamy diffraction theory applicable to calculate the wave forces on large-scale bridge piers,a calculation method was analytically and numerically investigated.First,the effects of the cross-section dimension and cross-section shape on the bridge pier inertial force coefficients were numerically examined.Then,the diffraction coefficient was introduced into the Morison equation,making the classical Morison applicable to calculate the wave forces on large-scale structures.The results show that the initial force coefficient of the square cross-section pier decreases faster,and the large-scale effects are more obvious in square cross-section piers than in the circular cross-section piers.The analytical solutions obtained from the Morison equation with a diffraction coefficient are very close to the numerical solutions.When the longitudinal wavelength is 0.2 times the wavelength,the wave forces on the large-scale square piers calculated from the modified Morison equation agree well with the numerical results.关键词
Morison方程/绕射理论/波浪力/流固耦合Key words
Morison equation/diffraction theory/wave forces/fluid-structure interaction分类
交通工程引用本文复制引用
邓莎莎,沈火明,刘浪,唐怀平..基于绕射理论的大尺度桥墩波浪力计算方法[J].西南交通大学学报,2018,53(2):266-271,6.基金项目
国家自然科学基金资助项目(51378437) （51378437）
