Analyssis And Control On Vibration Of Structure Subjected To Machinical Load

During recent years, Research on structural vibration is a hot topic in the field of civil engineering. It gets more importance and all-round research. This project mainly study on the dynamic response property of structure with external dynamic load, and take all kinds control methods in order to avoid or decrease the damage. For the structure with mechanical dynamic, there is no perfect theory guide on the analysis and control of structural vibration. Therefore, the study in this paper is of great importance and practical value for structural vibration problem.This paper, which is based on the three-time consolidation of a workshop building, gives more in-depth study on this problem.Firstly, it describes the general property, method of resolution, structure mode, the general concept of vibration and the necessity of structural dynamic measurement.Secondly, this paper discusses the definition of all parameters, especially on the parameters affecting material elastic modulus. It discusses the dynamic elastic modulus elementarily. Formula calculating structure lateral resistance stiffness according to the structure modal measurement and formula of optimum stiffness distribution which makes the structural natural period a certain value are derived.Thirdly, it analyses the calculation of vibration displacement; discusses the confirmation of every mechanical vibratory force and the influencing factors of damp; puts forward the method of calculation for structural vibration displacement of shear-type model; applies the vibration control theory of mechanical equipment to structure, brings forward the optimum stiffness distribution which make the structural natural period a certain value. Finally, this paper conducts detailed study on the basis of displacement vibration problem. It discusses the characters of different working conditions through establishing finite element models and in field measurements. It also discusses the influence extent to structure vibration of every factor and brings forward the consolidation plan for this project and a general resolution method for mechanical dynamic vibration which gives reference to similar problem.