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Damper vibration reduction system for restraining bridge vibration and implementation method

A vibration damping system and damper technology, applied in bridges, bridge parts, bridge construction, etc., can solve the problems of difficult application of damping force and unstable damping effect, and achieve the effect of low cost, ingenious design, and good vibration control.

Pending Publication Date: 2021-09-07
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The research and development purpose of the present invention is to solve the problem that the existing damping force for suppressing the vertical vibration of the main girder is not easy to apply and the suppression effect is unstable. A brief overview of the present invention is given below in order to provide some aspects of the present invention. basic understanding

Method used

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  • Damper vibration reduction system for restraining bridge vibration and implementation method
  • Damper vibration reduction system for restraining bridge vibration and implementation method
  • Damper vibration reduction system for restraining bridge vibration and implementation method

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specific Embodiment approach 1

[0036] Specific implementation mode one: combine figure 1 , 2and 4 illustrate this embodiment, a damper damping system for suppressing bridge vibration in this embodiment, including a deformation displacement conversion amplification device 1 and a damper 2, and both ends of the damper 2 are connected by the deformation displacement conversion amplification device 1 and the bridge The main girder 0 establishes a connection. When the bending vibration of the bridge main girder 0 occurs, the deformation displacement conversion amplification device 1 converts the angular displacement generated by the vertical bending vibration into a horizontal displacement difference, and transmits it to the damper 2, and the damper 2 is reversed. The main girder 0 of the bridge is stretched and pulled to suppress the vertical bending vibration of the main girder 0 of the bridge. When the main girder 0 of the bridge vibrates and deforms, the deformation displacement conversion amplification devi...

specific Embodiment approach 2

[0037] Specific implementation mode two: combination Figure 1-Figure 5 Describe this embodiment, based on specific embodiment one, a damper vibration reduction system for suppressing bridge vibration in this embodiment, the damper 2 includes an outer shell 21, a piston rod 22, a piston 23, a return spring 24 and a partition Plate 25, the inside of the outer casing 21 is divided into a piston chamber 2-1 and a reset chamber 2-2 by a partition plate 25, and the return spring 24 is arranged in the reset chamber 2-2, and one end of the piston rod 22 runs through the left side of the outer casing 21 and deforms The displacement conversion amplification device 1 establishes a connection through a spherical bearing 26, and the other end of the piston rod 22 passes through a partition plate 25 to establish a connection with a return spring 24. The right side of the outer shell 21 is connected to the deformation displacement conversion amplification device 1 through a spherical bearing...

specific Embodiment approach 3

[0038] Specific implementation mode three: combination Figure 1-Figure 5 Describe this embodiment, based on specific embodiment 1, a damper vibration reduction system for suppressing bridge vibration in this embodiment, the deformation displacement conversion amplification device 1 includes a fixed box 11, a left amplification device 12 and a right amplification device 13 , the fixed box 11 is fixedly installed at the bottom of the bridge girder 0, the left amplifier 12 and the right amplifier 13 are both arranged in the fixed box 11, and one end of the left amplifier 12 passes through the fixed box 11 and the bottom of the bridge girder 0 to establish Connection, the other end of the left amplification device 12 is connected with the piston rod 22 through a spherical bearing 26, one end of the right amplification device 13 passes through the fixed box 11 and establishes a connection with the bottom of the bridge girder 0, and the other end of the right amplification device 13...

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Abstract

The invention discloses a damper vibration reduction system for restraining bridge vibration and an implementation method, and belongs to the technical field of structural vibration control. The system comprises a deformation displacement conversion amplification device and a damper, the two ends of the damper are connected with a bridge girder through the deformation displacement conversion amplification device, and when the bridge girder generates bending vibration, the deformation displacement conversion amplification device amplifies the corner displacement generated by the bending vibration and converts the corner displacement into horizontal displacement; a piston of the damper is driven to move by utilizing a horizontal displacement difference formed by conversion and amplification of the relative angle displacement, and the damper is reversely stretched to output damping force to act on the bridge girder so that vertical bending vibration of the bridge girder is inhibited. The invention aims to solve the problems that the damping force for restraining the vertical vibration of the main beam is not easy to apply and the restraining effect is unstable in the prior art, and the system is simple in structure, ingenious in design, easy to install and low in cost, and can increase the vertical damping of the bridge by arranging a plurality of groups of horizontally arranged damping devices on the main beam of the bridge, and thus the effect of better controlling the vertical vibration of the large-span bridge is achieved.

Description

technical field [0001] The invention relates to a damping system for suppressing bridge vibration, which belongs to the technical field of structural vibration control. Background technique [0002] In recent years, the design of bridges has been developed in the direction of long-span, softness, and new shapes, and bridge vibration has attracted people's attention. Structural vibration control is to reduce or suppress the response of the structure due to dynamic loads by installing control devices on the structure. Studies have proved that structural vibration control can effectively reduce the response and damage of structures caused by dynamic loads, and ensure the use of major engineering structures. Safety. [0003] Vortex vibration is the vortex shedding when the air flow passes through the blunt body structure, so that the surfaces on both sides of the structure are subjected to alternating positive and negative pressures, which excites the limiting vibration of the ...

Claims

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Application Information

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IPC IPC(8): E01D19/00
CPCE01D19/00
Inventor 张连振张大光刘宇彭思杰
Owner HARBIN INST OF TECH
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