【摘要】 为解决山西某水泥余热发电厂因生料磨振动而导致的空冷岛结构振动超标问题,采用粘弹性人工边界单元,建立振源–土体–空冷岛结构的三维模型,通过对空冷岛进行模态分析得出其主要振动频率,结合振动在土体中的传递及衰减规律,提出隔振沟隔振的解决办法。针对沟深、沟宽、沟数量、沟间距及距振源距离等参数对隔振沟隔振效果的影响进行分析,选定隔振沟各参数的最优值并确定最佳方案,从而使空冷岛设备可以正常运行。更多还原

【Abstract】 In order to solve the problem of excessive vibration of the air cooling island structure caused by the vibration of the raw mill in a cement waste heat power plant in, Shanxi province, viscoelastic artificial boundary elements was used to establish a three-dimensional model of the vibration source-soil-air cooling island structure. The main vibration frequency was obtained through modal analysis, combined with the transmission and attenuation law of vibration in the soil, the solution to the vibration isolation of vibration isolation ditch was proposed. And the ditch depth, ditch width, ditch number, ditch spacing, distance from the vibration source and other parameters were used to analyze the effect of vibration isolation on vibration isolate ditch. The optimal value of each parameter of the vibration isolation ditch was selected to determine the best plan, so that the air cooling island equipment can be operated normally.更多还原