关键词: 结构振动, 振动测试, 共振现象：加固减振设计

Abstract: Aming at the vibration problem of the beam and platesin in the coal preparation plant in Handan city matou county.，The electronic equipment in the distribution room has been damaged repeatedly、cracks are found in the structure of the beam and plate，it unable to meet the safety production requirements. The vibration test and analysis technique are used to analyze the vibration of the structure in the coal preparation plant. The analysis results show that the two centrifuges on the second floor are the main source of vibration；The cause of the vibration is that the vibration frequency of the centrifuge equipment is close to the second order self-oscillation frequency of the structure.. it can cause the resonance phenomena. Based on results from the test and analysis, the method of reinforcing is to change the vibration frequency of thestructure and avoid the resonance region., then，the vibration response of the structure is controlled by the specification. The vibration response of the reinforced structure and the electronic equipment is obviously weakened. This example can provide a reference for the analysis method and the design of the vibration reduction in the coal preparation plant which has the problem of vibration.