摘要
闸门主要用于挡水及调控上下游水位,是水工建筑物中的一种重要结构。为探究闸门的有限元静力分布及闸门自振特性,以刘老涧新闸门为研究对象进行有限元静力分析,以得到闸门的面板、主横梁、边梁、纵梁、底梁及次梁的应力分布。结果表明:闸门的最大正应力为33.3 MPa,位于主横梁跨中后翼缘,闸门的最大正应力、切应力及折算应力均满足应力要求;对比分析了闸门在无水工况和7.5m水头工况下的模态,7.5m水头工况下闸门的第2、3、4、5阶自振频率相较于闸门在无水工况下的自振频率均有所不同程度的下降,闸门与水体间的流固耦合作用对闸门自振的影响不容忽视。
The gate is mainly used for retaining water and regulating the upstream and downstream water levels and is an important structure in hydraulic structures.To explore the finite element static distribution and natural vibration characteristics of the gate,a finite element static analysis was conducted on the Liu Laojian new gate.The stress distribution of the gate panel,main beam,edge beam,longitudinal beam,bottom beam and secondary beam was obtained.The results show that the maximum normal stress of the gate is 33.3 MPa,which is located at the middle and rear flange of the main beam span.The maximum normal stress,shear stress and reduced stress of the gate meet the stress requirements.The modes of the gate under the condition of no water and 7.5 m head are compared and analyzed.The second,third,fourth and fifth order natural vibration frequencies of the gate under the condition of 7.5m head are reduced to different degrees compared with the natural vibration frequencies of the gate under the condition of no water.The influence of fluid-structure interaction between the gate and the water body on the natural vibration of the gate cannot be ignored.
作者
黄毅
杜亮
黄凯
季杰
管月婷
臧伟
HUANG Yi;DU Liang;HUANG Kai;JI Jie;GUAN Yueting;ZANG Wei(Luoyun Hydraulic Project Management Division of Jiangsu Province,Suqian 223800,China;Jiangsu Hydraulic Engineering Construction Co.,Ltd.,Yangzhou 225000,China;Ninghe District Water Bureau of Tianjin,Tianjin 301500,China;College of Water Conservancy and Hydropower Engineering,Hohai University,Nanjing 210098,China)
出处
《江苏水利》
2023年第12期6-9,13,共5页
Jiangsu Water Resources
关键词
闸门
应力
振动特性
流固耦合
数值模拟
gate
stress
vibration characteristics
fluid-structure interaction
numerical simulation
作者简介
黄毅(1970—),男,工程师,主要从事大中型水利工程管理工作。E-mail:2601394001@qq.com;通信作者:臧伟(1993—),男,博士,主要从事流体机械及工程方向研究工作。E-mail:zw_nj@hotmail.com。
