景洪水电站升船机塔楼结构地震响应分析

以景洪水电站升船机塔楼结构为工程背景,采用大型有限元程序ANSYS为数值模拟工具,当浮筒里充满水时〔H1〕,计算分析得到塔楼结构的自振特性,在此基础上,通过振型反应谱法,分别计算了塔楼在水平和竖向地震作用下的动位移、动应力和加速度谱值。最后,用Tecplot软件显示ANSYS得到的动力与静力叠加结果等值线图,即塔楼结构在地震工况下的变形与应力,为结构抗震设计提供了重要的依据。

Seismic Response Analysis of the Ship Lifter Tower Structure of Jinghong Hydropower Station

Taking the ship lifter tower structure of Jinghong Hydroelectric Power Project as the object of study,the paper firstly obtained the self-oscillation characteristics of the tower structure through calculation and analysis made at the time when the float chamber was filled with water(H1) using the finite element program ANSYS for numerical simulation,then based on which calculated spectrum values of dynamic displacement,dynamic stress and acceleration of the tower structure under horizontal and vertical seismic effects using the vibration mode response spectrum method respectively and finally used software Tecplot to display the isograms of dynamic and static superposition results,which were obtained by ANSYS,i.e.strain and stress of the tower structure under earthquake conditions.The paper provides important basis for aseismatic design of the structure.