大型渡槽结构考虑流固耦合的动力建模研究  

Dynamic Modeling Study of Aqueduct Structure with Fluid structure Coupling

作　　者：徐建国[1] 陈淮[1] 王博[1] 王复明[1] 

机构地区：[1]郑州大学环境与水利学院,河南郑州450002

出　　处：《南京理工大学学报》2005年第6期639-644,共6页Journal of Nanjing University of Science and Technology

基　　金：河南省高校杰出科研人才创新工程项目(2003KYCX011);河南省科技攻关项目(0424470011)

摘　　要：该文依据符拉索夫(Volasov)和豪斯纳尔(Housner)理论建立考虑槽内水体与槽身动力相互作用以及槽身剪力滞后影响的渡槽薄壁结构横向动力分析模型,由能量变分原理推导出渡槽薄壁梁段单元刚度矩阵及质量矩阵表达式,通过数值算例验证了该模型的正确性;利用该模型对某大型渡槽进行了多种工况的频率计算,结果表明:大型渡槽在无水和设计水位时的振动频率有所变化;该文模型是考虑渡槽槽内水体横向流固动力相互作用的实用动力分析模型。Based on the theory of Volasov and Housner, the shell-bar aqueduct dynamical analysis modal with fluid-structure coupling and shear lag is established. The element stiffness and the mass matrix of the aqueduct are derived by an energy principle. The analytical solution formulas are deduced in the cases of no water and the design water level in aqueduct. By using the modal the frequencies in several cases are calculated and compared. The result shows that the frequencies are changed in the two cases. The modal in this paper is simple and practical for dynamic analysis of the fluid-structure coupling aqueduct.

关 键 词：渡槽 动力建模 剪力滞后 流固耦合 自振频率 

分 类 号：TV312[水利工程—水工结构工程]