拦污栅结构中单根栅条振动特性研究  

Study on Vibration Characteristics of Single Rack in Trash、rack

作　　者：徐晗[1] 黄克戬[1] 王盟[1] 

机构地区：[1]武汉大学土木建筑工程学院,湖北武汉430072

出　　处：《长江科学院院报》2004年第5期35-37,共3页Journal of Changjiang River Scientific Research Institute

摘　　要：目前设计中,对拦污栅的共振分析设计标准是对单根栅条而言的,采用的是Levin公式,但是由于其中没有考虑周围栅条的影响而存在一些问题。单根栅条频率的计算应该考虑整个栅叶的影响,为此通过把周围栅条的振动自由度凝聚到目标栅条上,推导出单根栅条在整体栅叶影响下频率求解的广义特征方程,并推得单根栅条的真实频率,从而说明了整扇栅叶振动影响单根构件的机理,在此基础上提出了一个Levin修正公式。In the present design,the analysis criterion on trash、rack resonance refers to a single rack according to Levin formula, but it is not completely right. This paper demonstrates that the frequence of a single rack is related to the effect of surrounding racks and the generalized characteristic equation for calculating the frequence of single rack in consideration of the influence of the whole trash、rack is deduced and the mechanism of this influence is explained. At last, a revised Levin formula is given.

关 键 词：拦污栅 固有频率 振动分析 Levin公式 

分 类 号：TV732.2[水利工程—水利水电工程]