开机过程中的水电站厂房振动分析  

Vibration analysis of hydropower-house during start-up process

作　　者：练继建[1] 秦亮[1] 田会静[1] 郑伟[1] 何成连[2] 

机构地区：[1]天津大学建筑工程学院,天津300072 [2]天津水利勘测设计研究院,天津300222

出　　处：《水力发电学报》2006年第2期1-5,15,共6页Journal of Hydroelectric Engineering

基　　金：高等学校博士学科点专项科研基金(编号:20020056029)

摘　　要：本文根据水电站厂房及机组结构开机过程原型观测资料,对水工结构振动情况进行分析,并详细探讨了机组起动过程中的轴向力、扭矩、不平衡力等几种主要荷载的变化情况,给出它们的幅值的近似估算。在此基础上,提出一种计算开机过程中厂房结构动力响应的方法。并将通过该方法结合有限元模型计算出的数值结果与实测数据进行比较,证明该方法是可行的。According to prototype observation data of hydropower-house and units during start-up process, this paper investigates the vibration of hydraulic structure and thoroughly analyzes the alterations of the primary load forces, such as axial force, torque, unbalanced force etc, and provides approximate evaluation on their vibration amplitude. Furthermore, this paper puts forward a method to compute the dynamic response of plant structure during start-up process, and proves it is feasible when the numerical results obtained by above method combining with FEM are compared with the actual measurement data.

关 键 词：水工结构 振动分析 有限元法 水电站厂房 开机过程 

分 类 号：TV31[水利工程—水工结构工程]