弧形闸门流激振动功率谱设计及时域反演  

Power Spectrum Design of Flow-Induced Vibration for the Radial Gate

作　　者：李斯 吴思远 王正中[3] LI Si;WU Siyuan;WANG Zhengzhong(Shanghai Millennium Urban Planning Engineering Design Co.,Ltd.,Shanghai 200000,China;State Key Laboratory of Disaster Reduction in Civil Engineering,Tongji University,Shanghai 200092,China;Cold and Arid Regions Water Engineering Safety Research Center,Northwest A & F University,Yangling 712100,China)

机构地区：[1]上海千年城市规划工程设计股份有限公司,上海200000 [2]同济大学土木工程防灾国家重点实验室,上海200092 [3]西北农林科技大学旱区寒区水工程安全研究中心,陕西杨凌712100

出　　处：《人民黄河》2019年第6期125-127,134,共4页Yellow River

基　　金：国家自然科学基金资助项目(51179164);国家科技支撑计划项目(2012BAD10B02);高等学校博士学科点专项科研基金项目(20120204110024)

摘　　要：针对现有弧形闸门流激振动功率谱设计欠缺,影响弧门动力分析及进一步减振控制的问题,在水流特性和实测脉动压力分析基础上利用优化思想和信号处理技术,以现有实测水头与动水压力对应关系及所选自回归滑动平均模型(ARMA)参数取值范围为约束条件,建立了符合实测荷载要求的功率谱模型和时域脉动荷载反演方法。通过与现有设计方法进行对比,验证了方法的有效性,结合工程实例给出了相应设计功率谱和随机脉动压力时程曲线。There exists lack of spectrum design of flow-induced vibration with respect to the radial gate that affects its dynamic analysis and vibration reduction control.To address this problem,it analyzed the flow characteristics and measured fluctuating pressure,meanwhile it used the optimization method and signal proceeding technology,a power spectrum model and inversion method of time-domain fluctuating pressure were established under the constraints of correspondence between water head and hydrodynamic pressure,and parameter ranges of the autoregressive moving average model.Above the model and method were validated through comparing with present design results which was applied in a real case.

关 键 词：弧形闸门 流激振动 参数振动 功率谱 时域反演 

分 类 号：TV34[水利工程—水工结构工程]