大型高墩渡槽的横向动力特性分析

将高墩渡槽简化为一高墩矩形水箱耦联系统，采用解析法分析了该系统的横向自由振动特性，分析结果表明：（１）耦联系统的频率可分为两类，一类为“流体振荡频率”，反映了水体的晃动；另一类为“结构振荡频率”，反映了结构的固有运动．（２）墩顶集中质量显著地影响“结构振荡频率”及“结构振荡振型”．

Analysis of Transverse Dynamic Characteristics of Large scale Tall pier Aqueduct

Simplifying the tall pier aqueduct as a coupled system of tall pier and rectangular tank,the transverse free vibration of the system is analyzed by using analytical methods.The results show that:(1) The frequencies of the coupled system can be divided into two classes,one sort is called “liquid oscillation frequency”which exhibits slosh of water,and the another called “structure vibration frequency”which exhibits natural motion of the sturcture;(2) the “structure vibration modes”are greatly affected by the accumulated masses on the pier top.