弧形闸门结构流激振动BIM+仿真模拟计算分析  

BIM+ Simulation Calculation and Analysis of Flow-induced Vibration of Radial Gate Structure

作　　者：张瑞捷 孙少楠 孙立新 全强 ZHANG Ruijie;SUN Shaonan;SUN Lixin;QUAN Qiang(China Institute of Water Resources and Hydropower Research,Beijing 100038,China;School of Water Conservancy,North China University of Water Resources and Electric Power,Zhengzhou 450046,China)

机构地区：[1]中国水利水电科学研究院,北京100038 [2]华北水利水电大学水利学院,郑州450046

出　　处：《内蒙古农业大学学报（自然科学版）》2024年第5期58-66,共9页Journal of Inner Mongolia Agricultural University(Natural Science Edition)

基　　金：“科技兴蒙”行动重点专项项目(2022EEDSKJXM005-02)。

摘　　要：溢洪道表孔弧形闸门泄洪过程中容易受到水动力特性和闸门结构自身特性等多种因素的综合影响,导致闸门结构受力、变形分布不规律,以及不同开度水体对闸门产生振动影响。以某水电站表孔弧形闸门为例,提出BIM+仿真模拟弧形闸门分析方法,采用BIM技术建立弧形闸门三维模型,将BIM模型输出可读取的有限元模型,导入Ansys-Workbench中分析不同开度下弧形闸门强度、刚度和稳定性变化情况。结果表明:出口流量仿真模拟值与理论计算值不超过4%,最大应力值为372.696MPa且出现在下主梁与门叶连接部位,表现为应力集中现象,整体闸门结构满足设计要求;最大变形值为10.288 mm,出现在门叶下部;得到水体对弧形闸门自振频率有显著影响,最大频率降幅值为57.1%。综上所述,BIM+仿真模拟技术可以进行弧形闸门流激振动分析,为BIM技术在大型水工钢结构计算分析提供参考。The hydrodynamic properties and characteristics of the gate structure significantly influence stress distribution and deformation,as well as the impact of water on gate vibrations under different opening degrees.This study presented the BIM+ simulation method for analyzing radial gates by using the surface orifice radial gate of a hydropower station as a case study.The building information modeling(BIM) technology was used to establish a three-dimensional model of the radial gate,which was then converted into a finite element model compatible with Ansys Workbench.This allowed for the analysis of the changes in the strength,stiffness and stability of radial gate at different opening degrees.The results indicated that the simulated outflow was less than 4%,with a maximum stress value of 372.696 MPa.The stress concentration occured at the junctions between the lower main beam and the gate blade,and the overall gate structure met the design requirements.The maximum deformation value was 10.288 mm,which appeared in the lower part of the gate leaf.The results showed that the water volume had a significant effect on the natural vibrational frequency of the bent gate,with a maximum frequency reduction value of 57.1%.The research demonstrated that the BIM+ simulation technology could effectively analyze flow-induced vibrations in radial gates,providing valuable insights for the calculation,analysis and application of BIM technology in large hydraulic steel structures.

关 键 词：BIM 仿真模拟 弧形闸门 流激振动 计算分析 

分 类 号：TV663.2[水利工程—水利水电工程]