考虑地基辐射阻尼的灯泡贯流泵房水力振动分析  

Hydraulic Vibration Analysis of Bulb Tubular Pump-house Considering Foundation Radiation Damping

作　　者：王新[1] 李同春[1] 潘树军 

机构地区：[1]河海大学水利水电工程学院,江苏南京210098 [2]南京市水利规划设计院,江苏南京210000

出　　处：《水力发电》2009年第1期20-23,26,共5页Water Power

基　　金：“十一五”国家科技支撑项目(2006BAB04A03

摘　　要：根据测点的脉动压力时程,构造整个流道的脉动压力场,通过三维有限元数值模拟对淮阴三站泵房进行了水力振动时程分析,计算了新型的灯泡贯流泵房的动力响应。和常规无质量地基模型的计算结果作对比,考虑地基辐射阻尼会使泵房的动力响应值最大降低50%左右,地基辐射阻尼对淮阴三站动力响应的影响比较显著。同时,根据相关控制标准,对泵房振动进行评价,为工程抗振设计提供依据。On the basis of the pulsating pressure of the measuring locations, the pulsating pressure field of the whole flow passage is structured. The hydraulic vibration time-history analysis of the pump-house of Huaiyin Sanzhan pumping station was made by using 3D finite element numerical simulation, and then the dynamic response of new bulb tubular pump-house was calculated. Compared with the conventional method of fixed boundary and no weight foundation, the dynamic response would decrease by about 50% in consideration of foundation radiation damping. Thus the influence of foundation radiation damping on the dynamic response of Huaiyin Sanzhan pumping station is relatively obvious. At the same time, the vibration of the pump house was evaluated in accordance with relative control standards, which will provide the basis for the anti-vibration design of project.

关 键 词：灯泡贯流泵房 水力振动 粘-弹性人工边界 数值计算 

分 类 号：TV731.12[水利工程—水利水电工程] TK733.8[交通运输工程—轮机工程]