摘要
波浪力作用采用非线性的Morison方程,而桥墩按剪切模型进行离散,建立了桥墩在地震和波浪力共同作用下的非线性动力方程,并采用时程迭代法计算分析,发现不考虑流固耦合时桥墩的动力响应计算结果明显小于考虑流固耦合时的计算结果。因此,在地震、波浪力共同作用下,考虑流固耦合更符合实际情况。
A non-linear dynamic equation of the pier under the combined effect of earthquake and wave force is established in this paper,in which the non-linear Morison equation is applied to the calculation of wave force while discretization according to shear model is made on the pier.Analysis with time-history iteration method shows that smaller calculation result is obtained when fluid-structure coupling is not taken into consideration.Therefore,it is more practical to take the fluid-structure coupling into consideration when the pier is under the combined effect of both earthquake and wave force.
出处
《四川建筑科学研究》
北大核心
2010年第6期157-159,共3页
Sichuan Building Science
关键词
动力响应
位移响应
流固耦合
Morison方程
dynamics response
displacement response
fluid-structure coupling
Morison equation
