Ribbed constrained damping layer structure

Abstract

The invention discloses a ribbed constrained damping layer structure which is characterized in that a structure layer, a damping layer and a constraining layer are superposed in sequence; the damping layer is made of a high-damping viscoelastic material, a ribbed constrained damping layer device is formed in a manner of fitting between the dimpling layer and the ribbed constraining layer and is mounted in a manner of adhesion between the damping layer and the structure layer. The ribbed constrained damping layer structure disclosed by the invention has the advantages that according to the ribbed constrained damping layer structure, the stiffness of the constraining layer is increased, the local deformation of the constraining layer in the transporting and mounting processes is reduced, and the disengaging phenomenon between the constrained damping layer and the structure layer is reduced during mounting, so that a good adhering effect on the constrained damping layer and the structure layer can be realized, and the shear deformation of the damping layer can also be increased. Therefore, the vibration reduction and noise reduction abilities of the ribbed constrained damping layer structure are improved.

Description

Technical field [0001] The invention relates to the technical field of structural vibration control, in particular to a constrained damping layer structure used to suppress vibration and noise of a steel beam. Background technique [0002] Under dynamic loads (wind, vehicles, pedestrians, etc.), civil engineering structures will vibrate. Excessive vibration will not only affect the normal use of the structure, but also cause noise pollution to the surrounding environment. The vibration of steel structure under dynamic action is greater than that of concrete structure, and the thickness of steel plate used in civil engineering structure is mostly 5-50 mm, and the steel plate has the strongest ability to radiate noise in this thickness range. The constrained damping layer dissipates vibration energy through the shear deformation of the damping layer, and can effectively suppress the vibration and noise generated by the steel structure in a wide frequency range. [0003] Constrained...

AI Technical Summary

Problems solved by technology

For engineering structures bearing large loads, the length, width and thickness of the structural members themselves are relatively large, so the area and thickness of the applied constrained damping layer are also relatively large, then the local deformation of the constrained layer will lead to local bonding failure , thereby reducing the vibration and noise reduction capability of the constrained damping layer

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