Nonlinear Oscillations Analysis Of The Cable-stayed Beam

To cable, the structure of the main beam units has been widely used in large-span, high-rise complex modeling and architectural structures. Lasso with large Sophie, the small mass and small damping characteristics, various incentives under extreme nonlinear vibration it is difficult to control, and cable-beam cable, Liang two structural units of vibration is easily lead to the structural failure of local structure and impact to the overall stability. Detailed analysis of its dynamic characteristics of future projects will provide an effective application of the theory of reference.This paper gives a detailed analysis of the cable, beam dynamics modules, Description of cable and the previous cantilever vibration frequency and vibration function. Through the establishment of ordinary cable, beam element nonlinear vibration equations, geometric nonlinear cable, Analysis of the cable within the resonance characteristics of the bearings and Solana movement of vibration characteristics, and the forward Euler format based predictive control algorithm, Study of the bearing axial cable control campaign to reduce wind load under the cable vibration. Numerical analysis results show that the algorithm can effectively reduce wind cable under the substantial vibration, and the cable-plane vibration effects than the surface vibration effects more noticeable.Based ordinary string and Euller cantilever beam vibration characteristics and taked into account the beam axis of the unit under its vibration frequency and amplitude of the changes. This paper established by the beam element under the influence of the axial force of the cable-beam structure simplified vibration model and the corresponding movement equations, using Runge - Kutta method for the actual construction of the numerical analysis, been affected by the beam element under the influence of the axial force cable-beam structure and the vibration characteristics of the initial axial force changes in the composition of the impact of structural vibration degree.Taking into account the cable bearing exercise will happen forced vibration and vibration parameters, in order to further close to the engineering practice, This paper established the cable element bearings campaign cable-beam structure simplified vibration model and the establishment of a vibration equations. Based on the actual numerical analysis obtained by the cable element bearings movement under the influence of cable-beam structure of the vibration characteristics Support and Analysis of frequency and amplitude of the combined impact of structural vibration.