考虑地基辐射阻尼的灯泡贯流泵房水力振动分析

英文篇名：Hydraulic Vibration Analysis of Bulb Tubular Pump-houses Considering Foundation Radiation Damping
中文刊名：中国农村水利水电
英文刊名：China Rural Water and Hydropower
作者：王新 ; 李同春 ; 潘树军
英文作者：WANG Xin1 ; LI Tong-chun1 ; PAN Shu-jun2(1.College of Water Conservancy and Hydropower Engineering ; Hohai University ; Nanjing 210098 ; China ; 2.Water Conservancy Planning Institute of Design ; Nanjing 210000 ; China)
中文关键词：灯泡贯流泵房 ; 水力振动 ; 粘-弹性人工边界 ; 数值计算
英文关键词：bulb tubular pump-house ; hydraulic vibration ; viscous-spring artificial boundary condition ; numerical simulation
出版日期：2009-03-15
机构：河海大学水利水电工程学院;南京市水利规划设计院;
年：2009
期：03
出版单位：中国农村水利水电

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。与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.A dynamic time-history analysis of pump-house of Huaiyinsanzhan Pumping Station caused by the flow is made to calculate the dynamic response of bulb tubular pump-house.Compared with the conventional method of fixed boundary with no weight foundation,the value of dynamic response decreases by about 50% at the foundation radiation damping,and the influence of the factor is very prominent on the dynamic response of Huaiyinsanzhan Pumping Station.At the same time,the results are evaluated based on control standards,which provide evidence for anti-vibration of projects.

引文

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