某水利工程溢洪道挑坎结构的模态分析  

Modal Analysis of the Spillway Flip Bucket Structure of a Water Conservancy Project

作　　者：朱俞仿[1] ZHU Yu-fang(China ENFI Engineering Co.,Ltd.,Beijing 100038,China)

机构地区：[1]中国恩菲工程技术有限公司

出　　处：《价值工程》2019年第18期159-161,共3页Value Engineering

摘　　要：本文采用大型有限元软件建立了某水电站洞式溢洪道挑坎的数值模型,进行了阵型分解反应谱法的模态分析,确定了该结构的前6阶自振频率和阵型。从模态分析的结果可知,该结构的各阶频率分布比较合理,阵型变化平滑连续、无突变,说明结构设计十分合理。本文结果能够为结构的动力响应分析的前提和依据。This paper uses a large-scale finite element software to establish a numerical model of a spillway flip bucket of a hydropower station. The modal analysis of the formation decomposition response spectrum method is carried out, and the first 6-order natural frequency and formation of the structure are determined. From the results of modal analysis, it can be seen that the frequency distribution of each order of the structure is reasonable, and the pattern change is smooth and continuous without mutation, indicating that the structural design is very reasonable. The results of this paper can be the premise and basis for the dynamic response analysis of the structure.

关 键 词：洞式溢洪道 挑坎 有限元 模态分析 阵型分析反应谱 

分 类 号：TV651.1[水利工程—水利水电工程]