Medium-sized suspension bridge protection device with bridge vortex vibration resisting structure

Abstract

The invention discloses a medium-sized suspension bridge protection device which comprises a suspension bridge surface, an alloy support and a first supporting force arm, the outer side of the suspension bridge surface is connected with an alloy cable in a nested mode, a solar panel is arranged over the suspension bridge surface, the alloy support is installed under the suspension bridge surface, protection box bodies are arranged over the suspension bridge surface, an equipment box body is arranged between the protection box bodies, a hinge joint is arranged on one side of each protection box body, a first choke plate is fixed to one side of each hinge joint through a bolt, a second choke plate is arranged on one side of the first supporting force arm, and a driving motor is installed in the equipment box body. According to the medium-sized suspension bridge protection device with the bridge vortex vibration resisting structure, ball screws and positioning grooves are arranged, the distance between the protection box bodies is adjusted through the ball screws, on one hand, the positions of the protection box bodies are adjusted according to the width of a bridge, and the efficiency of wind power flow blocking on the surface of the bridge is improved.

Description

technical field [0001] The invention relates to the technical field of bridge equipment, in particular to a medium-sized suspension bridge protection device with an anti-bridge vortex vibration structure. Background technique [0002] The vortex vibration of the suspension bridge is due to the large amount of separation and wide wake generated when the airflow passes through the blunt body structure, and periodically shedding vortices are generated on both sides of the structural section and in the wake flow, which causes the bridge structure to generate transverse vibration under low wind speed. Small amplitude limiting vibration in the wind direction, when the frequency of vortex shedding is consistent with a certain order natural frequency of the structure itself, vortex induced resonance will occur. The amplitude of beam vortex vibration can increase the vibration wind speed and even suppress the occurrence of vortex vibration. Moreover, the H-shaped section flange plate...

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Problems solved by technology

[0007] The object of the present invention is to provide a kind of medium-sized suspension bridge protective device with anti-bridge vortex vibration structure, to solve the above-mentioned background technology, propose that the range of motion of the existing cable bridge protective device is single, the device is generally fixed on both sides of the bridge body, it is difficult to The strength of the wind and the length of the bridge, adjust the position of the protective device of the cable bridge, it is difficult to automatically adjust the protective device according to the change of the wind force, and it is difficult to reduce the wind damping ratio of the protective device at a single angle.

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