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Device for damping and protecting bridge structural suspender

A bridge structure and protective device technology, applied to bridges, bridge parts, bridge construction, etc., can solve the problems of reducing the wind load of the boom, the root cause of vibration is not eliminated, and the result is not ideal, so as to reduce wind-induced vibration, The effect of simple structure and clear principle of vibration reduction

Active Publication Date: 2013-12-25
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the control of wind-induced vibration of the boom is mainly realized by mechanical devices such as dampers, but the result is not ideal, because the current damper is not designed according to the multi-mode vibration of the boom, and the damper cannot fundamentally reduce the The wind load of the small boom, the source of its vibration has not been eliminated

Method used

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  • Device for damping and protecting bridge structural suspender
  • Device for damping and protecting bridge structural suspender

Examples

Experimental program
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Effect test

Embodiment 1

[0014] Example 1: Combining figure 2 , the present invention is a bridge structure suspender anti-vibration protection device, which is composed of a bridge structure suspender (1), a first internal connecting pipe (2), a second internal connecting pipe (3), a first damping material (4) , the second damping material (5), the third damping material (6), the fourth damping material (7), the first lateral damping tube (8) and the second lateral damping tube (9), the bridge The structural suspenders (1) are respectively connected to the first internal connecting pipe (2) and the second internal connecting pipe (3), and the first internal connecting pipe (2) is respectively connected to the first damping material (4) and the second damping material (5 ), the second internal connecting pipe (3) is respectively connected to the third damping material (6) and the fourth damping material (7), the first lateral damping pipe (8) is connected to the first damping material (4), the second...

Embodiment 2

[0018] Example 2: For the bridge suspenders in use, combined with figure 1 and figure 2 , install the bridge structure suspender anti-vibration protection device on the suspender, the cross section of the device is as follows figure 2 shown. Since the boom is isolated by the lateral damping tubes, the wind loads all act on the lateral damping tubes, so that the boom will not experience wind-induced vibration. The vibration energy of the lateral damping tube under the action of wind load is consumed by the damping material, so as to reduce the wind-induced vibration of the bridge suspender. For the newly made bridge suspenders, the bridge structure suspender vibration-reducing protection devices are directly installed in the production process. At this time, the lateral damping pipe is a whole, and the internal connecting pipe is also a whole. Since the boom is isolated by the lateral damping pipe, all wind loads act on the lateral damping pipe, so that the boom will not b...

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PUM

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Abstract

The invention provides a device for damping and protecting a bridge structural suspender. The device for damping and protecting the bridge structural suspender consists of a bridge structural suspender, inner connecting tubes, damping materials and side damping tubes, wherein the bridge structural suspender is connected with the inner connecting tubes; the inner connecting tubes are connected with the damping materials; the damping materials are connected with the side damping tubes; four damping materials are arranged at an interval of 90 degrees; the side damping tubes, the damping materials and the inner connecting tubes form two halves of the device for damping and protecting the bridge structural suspender; and the two halve of the device for damping and protecting the bridge structural suspender are connected with each other through reserved bolt holes in the inner connecting tubes and are fixed on the outer side of the bridge structural suspender. The side damping tubes replace the suspender to bear a wind load, and the vibrating energy of the side damping tubes generated under the wind load is dispersed by the damping materials in the device for damping and protecting the bridge structural suspender; the device for damping and protecting the bridge structural suspender is simple in structure; the damping principle is clear; and the wind-driven vibration of the bridge suspender can be reduced well.

Description

(1) Technical field [0001] The invention relates to a bridge structure wind-induced vibration control technology, in particular to a bridge structure suspender vibration-reducing protection device. (2) Background technology [0002] As the span increases, so does the size of its towers. For long-span suspension bridges, the cross-sectional size of many reinforced concrete bridge towers can reach 20-30 meters, and the range of the wind-induced flow field can reach several times the cross-sectional size of the bridge tower. In the flow field, it is easy to be disturbed by the wind from the bridge tower. After the wind passes through the bridge tower, a flow field will be formed around it, and the frequency of the fluctuating wind speed around the flow field can be given by the formula f v = St·U / D, where St can take 0.15 for the square column, U is the wind speed of the incoming flow, and D is the projection of the bridge tower in the vertical direction of the incoming flow....

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E01D19/00
Inventor 李惠陈文礼赖马树金
Owner HARBIN INST OF TECH