淮安三站结构振动特性及抗振分析

发布时间：2018-01-20 15:54

本文关键词： 灯泡贯流泵站振动特性脉动压力动位移淮安三站　出处：《水利水电科技进展》2016年06期 　论文类型：期刊论文

【摘要】：为分析淮安三站的结构振动特性及成因,采用有限元动力分析方法,根据灯泡贯流式泵站的结构特点,建立三维有限元模型,深入分析了淮安三站结构的自振特性、动力响应及振动成因,并针对振动问题进行了抗振减振措施研究。结果表明:淮安三站振动主要成因为下部结构与水流脉动压力发生共振,在水流脉动压力作用下淮安三站泵房结构所产生的动位移较大,基本接近建筑结构振动允许位移值标准;通过增加泵房楼板厚度和加大梁截面尺寸等措施可达到抗振减振的目的。
[Abstract]:In order to analyze the structural vibration characteristics and cause of formation of Huai'an three stations, a three-dimensional finite element model was established according to the structural characteristics of bulb tubular pumping station by using finite element dynamic analysis method. The natural vibration characteristics, dynamic response and vibration cause of Huaian three-station structure are deeply analyzed. The results show that the vibration of Huai'an station is mainly caused by the resonance between the substructure and the fluctuating pressure of the water flow. Under the action of fluctuating water pressure, the dynamic displacement produced by the structure of Huai'an three stations pump house is relatively large, which is close to the allowable displacement standard of the structural vibration. By increasing the floor thickness of pump room and increasing the section size of beam, the purpose of vibration resistance and vibration reduction can be achieved.
【作者单位】：东华理工大学建筑工程学院;河海大学土木与交通学院;
【基金】：江西省教育厅科技计划(GJJ4497)
【分类号】：TV675;TV312
【正文快照】： 振动是泵站运行中最为常见的问题,直接影响机组的安全运行。泵站的振动问题一直受到人们的重视,但泵站的振动问题十分复杂,很难精确地对其进行定量分析。大型灯泡贯流式泵站在国内运用还不是很成熟,目前淮安第三抽水泵站(淮安三站)是江苏省乃至全国建设时间最早、建设规模最大

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