水中悬跨结构动力特性试验与计算研究  

Calculation and Experimental Study on Dynamic Characteristics of Submarine Suspended Span Structure

作　　者：雷凡[1] 杨吉新[1] 邓育林[1] 

机构地区：[1]武汉理工大学交通学院,武汉430063

出　　处：《武汉理工大学学报（交通科学与工程版）》2013年第4期813-816,共4页Journal of Wuhan University of Technology（Transportation Science & Engineering）

基　　金：国家863计划项目资助(批准号:2007AA11Z107)

摘　　要：水中结构经常受到外部荷载的作用产生振动,引起结构的损伤甚至破坏.分若干工况对水中悬跨结构模型在无水和有水环境下的动力特性进行了测试,分析了不同尺寸、不同规格模型的动力特性.并采用附加质量法以及三维数值有限元法对试验模型动力特性进行了计算和分析.研究结果表明,水对结构的动力特性有一定影响,为准确进行水中结构的动力分析,应该考虑结构与水的相互作用.The effect of external load makes harmful vibrations of the submarine structures,which causes structural damage.The experiments were used to test the dynamic characteristic of each model both in the air and in the water.The factors that influence the dynamic characteristics,including size and specification of structures,were analyzed.Additional mass method and three dimensional finite element method was used to calculate the dynamic characteristic of experimental models.The results show that,water has some effect on dynamic characteristic of structures in the water.The interaction of structure and water should be considered in dynamic analysis of submarine structures.

关 键 词：水中结构 试验研究 数值计算 动力特性 

分 类 号：TN2[电子电信—物理电子学]