Railway hydraulic active control vibration reduction support test system

Abstract

The invention relates to a railway hydraulic active control vibration reduction support test system which comprises a test device part which comprises a counter-force mechanism, an executing mechanism and a model beam, an actuator hydraulic cylinder in the executing mechanism applies acting force to the model beam to simulate traffic loads borne by the model beam, a support hydraulic cylinder simulates an active control vibration reduction support, and a water level hydraulic cylinder simulates water level change and water wave hydrodynamic excitation; a control system, wherein the control system comprises three independent parts, the first part controls the actuator hydraulic cylinder to apply external excitation to the model beam, the second part controls the water level hydraulic cylinder to achieve simulation excitation of the water body to the active control vibration reduction support, the third part obtains vibration parameters of the model beam through the signal collecting part, output parameters of the support hydraulic cylinder are adjusted in real time based on the vibration parameters, the beam end of the support hydraulic cylinder is located within the vibration range, the vibration parameters of the model beam is within the preset range to achieve the vibration reduction effect, and the vibration parameters are output to generate a test effect picture.

Description

technical field [0001] The invention relates to the technical field of vibration-damping bearing test devices, in particular to a railway hydraulic active control vibration-damping bearing testing system. Background technique [0002] In the emergency repair of deep-water long-span railway bridges, under the action of vehicle dynamic load and water body, the floating pier will heave, and the steel truss girder will produce a corresponding vibration response. In engineering practice, it is one of the most commonly used methods to reduce beam vibration through supports. At present, most bearings achieve vibration reduction through passive control methods such as improving the structure details and materials of the bearings. In particular, there are few related studies on active control bearings of railway pontoon bridges, and there is a lack of corresponding test systems to test active control bearings. the damping effect. Contents of the invention [0003] The object of t...

AI Technical Summary

Problems solved by technology

At present, most bearings achieve vibration reduction through passive control methods such as improving the structure details and materials of the bearings. In particular, there are few related studies on active control bearings of railway pontoon bridges, and there is a lack of corresponding test systems to test active control bearings. The vibration reduction effect

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