拉西瓦进水口高耸塔群动力分析  

Dynamic analysis of high intake tower group for Laxiwa hydropower project

作　　者：邱敏[1] 王冬条[1] 

机构地区：[1]中国水电顾问集团西北勘测设计研究院,西安710065

出　　处：《西北水电》2009年第6期33-36,共4页Northwest Hydropower

摘　　要：拉西瓦水电站进水塔由6个单塔组成,"一"字型错台布置,塔群的最大高度为115 m;基于通用有限元程序ANSYS,采用时程分析法对塔群进行了动力分析;计算结果反映进水塔对输入地震的放大作用明显,塔顶加速度达到塔底的1.8倍。在遇高烈度地震情况下,群塔之间有发生互相碰撞的可能性。依据动力分析结果对防止塔群碰撞提出了有益的建议和措施。The Laxiwa intake tower group is consisted of 6 towers arranged in a line and the maximum height of the tower group is 113m.Based on the general finite element program ANSYS,dynamic analysis of the tower group is made by the time-history method.The calculated results show that the intake tower obviously magnifies input earthquake and the acceleration at tower top is 1.8 times of that at the bottom.In the case of high intensity earthquake,the towers may collide with each other.The paper puts forward recommendations and measures to prevent the collision of group towers based on the results of dynamic analysis.

关 键 词：拉西瓦水电站 高耸塔群 动力分析 时程法 

分 类 号：TV135[水利工程—水力学及河流动力学]