铁道科学与工程学报2017，Vol.14Issue(9)：1829-1837,9.
单排封闭式PVC空井减隔振措施的模型试验研究
Research on the model test of vibration reduction measure by enclosed PVC empty-wells of single row on high-speed railway
摘要
Abstract
Aiming at the serious vibration problem to ambient environment during the operation of high-speed railway, this dissertation focuses on studying the effect of vibration reduction by using enclosed PVC empty-wells of single row and its influencing factors under the conditions of different vibration frequency and provides reference for practical projects. It is based on the scaled model test of vibration reduction using enclosed PVC empty wells of single row in 1 g condition. Conclusions: When the empty-wells are installed, the relative acceleration attenuation of everywhere behind the wells is maximized about 20%, thus, the effect of vibration reduction is favorable. Under the low frequency's vibration, the effect of vibration reduction which closes to empty-wells will be enhanced when the diameter of empty-wells is increased. However, under the high-frequency's vibration, its influence on everywhere behind empty-well is obvious Thus, it is available to increase the diameters of empty-wells to enhance the effect of vibration reduction around empty-wells. When the depth of empty-well is increased, the result will be improved. Moreover, the deeper the depth is, the more obvious the effect of vibration reduction is. But this measure is not as effective as the method of increasing the diameter. Under the correct circumstances in practical projects, empty-wells should be deepened to the greatest extent.Decreasing the distance between empty-wells is available to enhance the effect of vibration reduction. However, the improving of the effect is gradually slow with the increasing of the density of empty-wells. Comparing with increasing the diameter and depth of the empty-wells, the influence of this measure is more powerful. Therefore, under the correct circumstances in practical projects, the distance between empty-wells can be reduced appropriately.关键词
高速铁路/减隔振/单排封闭式PVC空井/模型试验Key words
high-speed railway/vibration reduction/enclosed PVC empty-wells of single row/model test分类
建筑与水利引用本文复制引用
刘晶磊,马玉涛,侯恩品,冯桂帅,王一峰,张雷刚..单排封闭式PVC空井减隔振措施的模型试验研究[J].铁道科学与工程学报,2017,14(9):1829-1837,9.基金项目
河北省青年人才拔尖计划(BJ2016018) （BJ2016018）
张家口市科技局科技计划项目(1511074B) （1511074B）
