水力自动滚筒闸门振动特性的试验研究  

Experimental Research on Vibration Performance of Hydraulic Automatic Rolling Gate

作　　者：李昊[1] 张园[2] 文恒[1] 

机构地区：[1]内蒙古农业大学水利与土木建筑工程学院,呼和浩特010018 [2]内蒙古建筑职业技术学院,呼和浩特010070

出　　处：《内蒙古大学学报（自然科学版）》2015年第1期97-102,共6页Journal of Inner Mongolia University：Natural Science Edition

基　　金：国家自然科学基金(No.50669001)资助项目

摘　　要：分析动水压力作用下新型水力自动滚筒闸门在开启工作过程中的振动响应,以揭示横置水中圆筒的振动加速度及位移变化规律.横置水中圆筒表面绕流流场水流变化复杂,目前水力自动滚筒闸门在动水压力作用下的振动无现成的计算方法.通过物理模型试验研究,发现在筒下开度一定的情况下,当上游水位不断上升时,筒体表面振动加速度呈现不断增大的趋势;当上游水位上涨至筒体上下同时泄水后,振动加速度增幅快速增长.与加速度变化规律不同,当上游水位与筒顶平齐且无水体附加质量约束作用时,筒体表面振动位移实测值最大.Vibration response is examined in the work process of opening a hydraulic automatic rolling gate under the hydrodynamic pressure, to reveal the distribution law of the vibration acceleration and displacement on the surface of cylinder placed transversely in the water. The circle flow field around the surface of a transverse cylinder which is in water changes complicatedly. At present,there is not a ready-made method for calculating the vibration response due to the complicated variation of water flow field around the cylinder. Based on the experimental study of physical model, the result shows that the vibration acceleration on the surface of a cylinder continues to show significant trends,at the certain opening under the cylinder,when the upstream water level continues to rise,and the growth in the vibration acceleration increases rapidly when the water level in the upstream reaches the top of cylinder and the water flows downward at the same time from the top and the bottom of the cylinder. Being different from the variation of the vibration acceleration, the measured values of vibration displacement on the surface would be the maximum after the upstream level is at the top level of cylinder without any binding effect of additional water mass.

关 键 词：水力自动滚筒闸门 振动特性 模型试验 

分 类 号：TU132[建筑科学—建筑理论]