Experimental study on vibration reduction and reinforcement of the grillage beam floor under impact loads
In order to solve the vertical vibration overlimit problem caused by the operation of large power equipment in an industrial building,the method of increasing stiffness(increasing floor thickness and grillage beam height)was adopted to study the vibration reduction effect of the grillage beam floor structure under impact load through scaled model tests.The similarity relationship of physical quantities between the scaled model and the prototype structure of the local grillage beam floor structure was derived,and the natural frequency,dynamic response and other parameters of the specimen were obtained.The experimental results were compared and analyzed with the ABAQUS finite element simulation results.The results show that increasing the floor thickness and grillage beam height can effectively reduce the vertical vibration acceleration of the grillage beam floor.Compared to the reinforcement method of increasing floor thickness,increasing the grillage beam height has a better vibration reduction effect.The measured and simulated vertical vibration acceleration trends of the scaled model specimens are basically consistent,which verifies the accuracy of the similarity relationship of physical quantities between the scaled model and the prototype structure,and the effectiveness of the scaled model.
Grillage beam floorImpact loadScaled modelVibration reduction and reinforcementDynamic response
万方数据
维普
