基于流固耦合的闸墩振动及抗振措施研究  

Research on vibration and anti-vibration measures of gate pier based on fluid-solid coupling

作　　者：熊志豪 陆雍容 张晶晶 XIONG Zhi-hao;LU Yong-rong;ZHANG Jing-jing

机构地区：[1]上海勘测设计研究院有限公司,上海200434

出　　处：《东北水利水电》2024年第4期38-42,72,共6页Water Resources & Hydropower of Northeast China

摘　　要：为研究溢洪道闸墩在高速水流作用下的振动问题,文中采用三维有限元方法计算了闸墩在不同闸门开度下的应力分布及振动位移。计算结果表明,在水流激励作用下,闸墩最大应力集中在闸墩与基础连接部位,振动位移峰值位于闸墩顶部;闸墩的应力和振动位移随闸门开度增大而增加;在同一开度下,闸门单开的应力和振动位移均大于闸门双开的工况。同时,为减小高速水流作用对闸墩的不利影响,还提出了在闸墩顶部增加钢筋混凝土横梁加固,经过计算,采用加固措施后闸墩的振动位移峰值显著减小。此次研究为其他相关工程设计提供了参考。In order to study the vibration of spillway pier under the action of high speed water flow,the stress distribution and vibration displacement of spillway pier under different opening degrees are calculated by three-dimensional finite element method.The calculation results show that the maximum stress of the pier is concentrated at the joint of the pier and the foundation,and the peak value of vibration displacement is located at the top of the pier.The stress and vibration displacement of the pier increase with the opening of the gate.Under the same opening degree,the stress and vibration displacement of single opening gate are greater than that of double opening gate.At the same time,in order to reduce the adverse effect of high-speed water flow on the pier,it is also proposed to add reinforced concrete beams to the top of the pier.Through calculation,the peak value of vibration displacement of the pier is significantly reduced after adopting the reinforcement measures.This study provides reference for other related engineering design.

关 键 词：闸墩 流激振动 流固耦合 应力 抗振措施 

分 类 号：TV698[水利工程—水利水电工程]