KR20160117089A - Fairing for vibration reduction and bridge structure uising it - Google Patents

Fairing for vibration reduction and bridge structure uising it Download PDF

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Publication number
KR20160117089A
KR20160117089A KR1020150045754A KR20150045754A KR20160117089A KR 20160117089 A KR20160117089 A KR 20160117089A KR 1020150045754 A KR1020150045754 A KR 1020150045754A KR 20150045754 A KR20150045754 A KR 20150045754A KR 20160117089 A KR20160117089 A KR 20160117089A
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KR
South Korea
Prior art keywords
bridge
top plate
flow space
wind
wind pressure
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KR1020150045754A
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Korean (ko)
Inventor
신희정
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(주)동명기술공단종합건축사사무소
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Priority to KR1020150045754A priority Critical patent/KR20160117089A/en
Publication of KR20160117089A publication Critical patent/KR20160117089A/en

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    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D19/00—Structural or constructional details of bridges
    • E01D19/12—Grating or flooring for bridges; Fastening railway sleepers or tracks to bridges

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Wind Motors (AREA)

Abstract

The present invention relates to a fairing for reducing vibration, which is installed on a side of a bridge deck to prevent a bridge from being vibrated due to a wind pressure, and a bridge structure reducing the vibration of the bridge using the same. The fairing for reducing vibration includes a wing unit including one or more inclined surfaces to disperse the wind pressure by being connected to the side of the bridge deck. A moving space which wind flows into and out of is formed between the side of the bridge deck and a front end of the wing unit. Therefore, the wing unit is installed on the side of the bridge deck to disperse the wind pressure. As the wind passes through the moving space, a wind speed can be reduced. Therefore, a lateral force and an upward force applied to the bridge deck are reduced. A twisting phenomenon and a galloping phenomenon are minimized, and durability and safety of the bridge structure can be improved.

Description

FIELD OF THE INVENTION [0001] The present invention relates to a pairing for vibration reduction and a bridge structure using the same,

The present invention relates to a pairing for vibration reduction and a bridge structure using the same. More specifically, the present invention relates to a pairing for vibration reduction installed on the side of a bridge top plate to prevent vibrations of the bridge due to wind pressure, It is about bridge structures.

A bridge is a structure for passing over obstacles such as rivers, straits, bays and canals. These types of structures are diverse, and can be divided into suspension bridge, cable-stayed bridge, arch bridge, trust bridge, and ramen Bridge depending on the type of structure.

Suspension bridges and cable-stayed bridges hang bridges over the steel pillars of the high-column pylon. This is advantageous in providing an economical long span, but a suspension bridge or a cable-stayed bridge is generally affected by wind, and there is a risk of deformation or breakage due to wind pressure.

Steel cables used in suspension bridges and cable-stayed bridges are strong against tensile forces but weak against compressive forces. They resist the gravitational load acting on bridge decks, but are not resistant to lateral forces or upward forces by wind pressure. The twisting phenomenon in which a bridge top plate is twisted between a long bridge and a long bridge due to a strong wind or a gust of wind or upward air flow and a galloping phenomenon rising upwards deteriorates the stability and durability of the bridge top plate. There is a need for measures to prevent this.

Japanese Patent Application Laid-Open No. 10-1028571 discloses an assembled type girder which is able to withstand a wind load by connecting girder wings on both sides of a steel girder body.

As described above, when the girder portion of the steel girder body is joined, the wind pressure blowing on the bridge top portion is dispersed up and down to meet the girder portion, thereby reducing the lateral force applied to the steel girder body, It is possible to press the body from above to reduce the galloping phenomenon caused by the upward airflow.

However, it is difficult to effectively prevent the twisting phenomenon and the galloping phenomenon by the above-described conventional technology alone.

On the other hand, a method for utilizing the strong wind pressure applied to the bridge top plate is required.

In order to solve the problems of the background art described above, the present invention provides a bridge structure using the pairing for vibration reduction, which improves the safety and durability of the bridge top plate by minimizing twisting phenomenon and galloping phenomenon occurring in the bridge top plate, There is a purpose.

It is another object of the present invention to provide a pair for vibration reduction which can effectively reduce not only the strong wind pressure applied to a bridge but also effectively utilize it.

In order to solve the above-mentioned problems, the present invention provides a pairing for preventing vibration of a bridge due to wind pressure, comprising: a blade portion coupled to a side portion of a bridge top plate and having at least one inclined surface for dispersing wind pressure; And a flow space in which the wind flows and flows out is formed between the side of the bridge top plate and the tip of the wing.

Preferably, a coupling portion for coupling the wing portion to the bridge top plate so as to be spaced apart from each other; .

Preferably, the engaging portion is composed of a plurality of plates spaced apart on the side of the bridge top plate, and the wing portion is coupled to the plate.

Preferably, the wing has at least one inlet through which the wind is introduced into the flow space and at least one outlet through which the wind flows out from the flow space.

Preferably, the rotation driving unit is disposed in the flow space and rotates by wind pressure passing through the flow space. And a power generator driven by the rotation driving unit and generating power; .

In order to solve the above-mentioned other problems, the present invention provides a bridge structure for preventing vibration of a bridge due to wind pressure, wherein the above-mentioned pairing is coupled to the side of the bridge top plate.

Preferably, the rotation driving unit is disposed in the flow space and rotates by wind pressure passing through the flow space. A power generator driven by the rotation driving unit and generating power; An output unit for displaying traffic information or a safety signal of the bridge using electric energy produced by the power generation unit; .

According to the bridge structure using the pair for vibration reduction of the present invention, the wing portion is provided on the side of the bridge top plate to distribute the wind pressure, wind can pass through the flow space, and the wind speed can be reduced. As a result, the lateral force and upward force applied to the bridge top plate are reduced, and twisting phenomenon and galloping phenomenon are minimized, thereby improving the durability and safety of the bridge structure.

In addition, according to the pairing for vibration reduction of the present invention, a rotary drive unit is provided in the flow space to generate electricity by the wind pressure passing through the flow space, and the traffic information or the safety signal of the bridge is displayed using the wind pressure, You can protect passersby.

1 is a perspective view of a bridge structure according to a first embodiment of the present invention;
2 is a partial perspective view of a bridge structure according to a first embodiment of the present invention;
3 is a cross-sectional view taken along the line AA of Fig. 2 according to the first embodiment of the present invention.
4 is a perspective view of a bridge structure according to a second embodiment of the present invention;
5 is a partial perspective view of a bridge structure according to a second embodiment of the present invention;
Fig. 6 is a sectional view taken along the line BB of Fig. 5 according to the second embodiment of the present invention; Fig.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. The bridge structure using the pair for vibration reduction of the present invention can be classified into the first and second embodiments, and the constituent elements of each embodiment are basically the same, but there are differences in some configurations. In addition, among the various embodiments of the present invention, the same reference numerals in the drawings are used for the same functional elements and functions.

In the bridge structure using the pairing for vibration reduction of the present invention, pairing is provided on the side of the bridge top plate to prevent the bridge from vibrating due to wind pressure to reduce vibration of the bridge.

The bridge structure using the pairing for vibration reduction according to the first embodiment of the present invention is a bridge structure for preventing the vibration of the bridge due to wind pressure. As shown in Figs. 1 to 3, A rotary part 50, a power generation part 60 and a display part 70. The power generation part 60 is provided with a power supply part 20, a fluid space 30, a coupling part 40,

As shown in Fig. 1, the bridge upper plate 10 can pass by a car or a pedestrian to the upper plate of the bridge.

The bridge upper plate 10 is composed of upper and lower plates using high-performance steel (HSB) for bridges, and U-ribs can be disposed on the inward faces of the upper and lower plates. In addition, a diaphragm of a truss type is formed in the bridge top plate 10 to support the bridge top plate 10 firmly, and the dehumidification and maintenance of the inside of the bridge top plate 10 can be advantageously made. However, the structure of the bridge top plate 10 is not limited thereto.

The wing portion (20) is coupled to the side of the bridge top plate (10) and has at least one inclined surface to disperse the wind pressure. This allows the wind pressure of the wind blowing from the side of the bridge top plate 10 to be dispersed at the front end of the wing portion 20, thereby reducing the lateral force applied to the bridge top plate 10. Generally, the wing portion 20 disperses the wind up and down, and the wind dispersed to the upper portion of the wing portion 20 moves along the upper surface of the wing portion 20 to the upper portion of the bridge top plate 20, It is possible to reduce the upward force exerted on the backlash.

The wing portion 20 shown in Figs. 1 and 3 has an upper face inclined upward from the front end of the wing portion 20 toward the bridge upper plate 10 and a downward inclined lower face, So that the flow space 30 can be widened and at the same time the weight of the wing 20 can be reduced.

At this time, the inclination degree and the curvature of the upper and lower surfaces of the wing portion 20 are preferably set appropriately according to the condition in which the pairing is provided.

The flow space 30 is positioned between the side of the bridge top plate 10 and the leading end of the wing 20 and flows into the flow space 30 to flow out of the flow space 30.

The wind dispersed from the front end of the wing portion 20 flows into one side of the flow space 30 and flows out to the other side. Generally, the air flows into the upper portion of the flow space 30 and flows out to the lower portion. By forming the flow space 30, the wind pressure applied to the bridge top plate 20 can be further reduced.

As shown in FIG. 2, the engaging portion 40 engages the wing portion 20 with the bridge top plate 10 apart from the bridge top plate 10. The engaging portion 40 may be formed of a plurality of plates spaced on the side of the bridge top plate 10. The plate is installed such that one side is coupled to the rear end of the wing portion 20 and the other side is coupled to the side of the bridge top plate 10. [ At this time, if the thickness of the coupling portion 40 is too thin, there is a high risk of breakage, and the gap between the coupling portions 40 should be narrow. Conversely, if the thickness is too large, the flow space 30 is formed to be narrow and the effect of further reducing the wind pressure is reduced. Therefore, it is preferable to set the thickness of the engaging portion 40 appropriately.

Further, the coupling portion is not limited to the above-described coupling portion, and any shape may be used as long as the coupling portion 20 is engaged with the bridge top plate 10. [

3, the rotary drive unit 50 is disposed in the flow space 30 and is rotated by the wind pressure passing through the flow space 30 to allow the power generation unit 60 to generate electricity. A fan or a blade of a wind power generator may be used as the rotation driving part 50. It is preferable that the rotation axis of the rotation driving part 50 is vertically or inclined so as to be influenced by the highest wind pressure in the flow space 30. [

The power generation unit 60 is driven and rotated as the rotation drive unit 50 rotates. Thereby, electric energy can be produced using the wind pressure passing through the flow space (30).

The output unit 70 displays the traffic information or the safety signal of the bridge by using the electric energy produced by the power generation unit 60. For example, electric signboards for providing information on traffic conditions and weather of bridges, streetlights, lights installed on railings, and traffic announcements can be used by using the electric energy produced by the power generator 60. As a result, drivers or pedestrians passing on the bridge can be informed of the dangerous situation in advance by being informed of the safety signs.

Hereinafter, the overall structure of the bridge structure using the vibration reducing pairing of the first embodiment and the process of wind power generation according to the structure will be described in detail.

A plurality of plate-shaped engaging portions 40 are provided at intervals on the side of the bridge upper plate 10 and the wing portions 20 form a side portion of the bridge upper plate 10 and a flow space 30 To the plate.

The wind blowing toward the bridge top plate 10 is dispersed upward and downward at the front end of the wing portion 20 so as to reduce the lateral force applied to the bridge top plate 10 in a primary direction, The wind presses the bridge top plate 10 at the top of the bridge top plate 10 to reduce the upward force applied to the bridge top plate 10. [ A part of the wind dispersed in the upper part of the wing part 20 flows into the upper part of the flow space 30 and flows into the lower part of the flow space 30 after rotating the rotation driving part 50, Thereby reducing the wind pressure applied to the wind turbine. This minimizes the twisting phenomenon of the bridge top plate 10, the galloping phenomenon, and the vibration of the bridge top plate 10, thereby improving the durability and safety of the bridge structure.

When the rotary drive unit 50 is rotated by the wind pressure passing through the flow space 30, the power generation unit 60 is driven by the rotational force to generate electric power, and the electric energy generated by the power generation unit 60 is used to output Thereby actuating the portion 70. The output unit 70 can protect the passenger by informing the passenger of the traffic information or the safety signal of the bridge such as a street light, a traffic situation display board, and a traffic announcement voice.

The second embodiment of the present invention differs from the first embodiment in the wing portion 22 and the flow space 32. Hereinafter, description of the same components as those of the first embodiment will be omitted, and components having a difference from the first embodiment will be described with reference to FIGS. 4 to 6. FIG.

The wing portion 22 can be coupled to the side of the bridge top plate 10 by a simple connecting member or welding, unlike the first embodiment. That is, the wing portion 22 is composed of a top surface inclined upward from the front end toward the bridge top plate 10 and a downward inclined bottom surface, and the lower ends of the top surface and the bottom surface of the wing portion 22 are respectively coupled to the side portions of the bridge top plate 10 The upper and lower surfaces of the wing portion 22 and the side portions of the bridge top plate 10 are arranged so as to have the flow space 32 therein. As shown in FIG. 6, the upper and lower surfaces of the wing portion 22 may be convex outwardly of the flow space 32, respectively, so that the vertical cross-section thereof may be formed to be close to the streamline shape.

The wing portion 22 also has at least one inlet 22a through which the air flows into the flow space 32 and at least one outlet 22b through which the air flows out of the flow space 32. [ In general, the inlet 22a is provided on the upper surface of the wing portion 22 and the outlet 22b is provided on the lower surface of the wing portion 22. However, the present invention is not limited thereto.

A portion of the wind dispersed upward from the front end of the wing portion 22 flows into the flow space 32 through the inlet 22a provided on the upper surface of the wing portion 22 to rotate the rotation driving portion 50, And flows out from the flow space 32 through the outlet 22b provided on the bottom surface of the portion 22.

Although not shown in the drawings, the wing portion 22 may be provided with a rib in its interior to serve as a reinforcing member for preventing a wing portion 22 made of a thin plate from being sagged by a load.

While the invention has been shown and described with reference to certain embodiments thereof, it will be understood by those skilled in the art that various changes and modifications may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

10: bridge top plate
20, 22: wing portion
22a: inlet
22b: outlet
30, 32: a floating space
40:
50:
60:
70:

Claims (7)

As a pairing for preventing vibration of a bridge due to wind pressure,
A wing portion coupled to a side of the bridge top plate and having at least one inclined surface for dispersing wind pressure; Lt; / RTI >
Wherein a flow space is formed between the side of the bridge top plate and the tip of the wing to allow the wind to flow in and out. The method according to claim 1,
A coupling part for coupling the wing part to the bridge top plate so as to be spaced apart from each other; Further comprising: a pair of vibration reducing pawls. 3. The method of claim 2,
Wherein the engaging portion comprises a plurality of plates spaced apart from each other on the side of the bridge top plate,
And the wing portion is coupled to the plate. The method according to claim 1,
Wherein the wing portion includes at least one inlet port through which the wind flows into the flow space and at least one outlet through which the wind flows out from the flow space. The method according to claim 1,
A rotation driving unit disposed in the flow space and rotated by a wind pressure passing through the flow space; And
A power generator driven by the rotation driving unit and generating power; Further comprising: a pair of vibration reducing pawls. A bridge structure for preventing vibration of a bridge due to wind pressure,
Wherein the pairing of the first claim is coupled to a side of the bridge top plate. The method according to claim 6,
A rotation driving unit disposed in the flow space and rotated by a wind pressure passing through the flow space;
A power generator driven by the rotation driving unit and generating power; And
An output unit for displaying traffic information or a safety signal of the bridge using electric energy produced by the power generation unit; ≪ / RTI >
KR1020150045754A 2015-03-31 2015-03-31 Fairing for vibration reduction and bridge structure uising it KR20160117089A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020150045754A KR20160117089A (en) 2015-03-31 2015-03-31 Fairing for vibration reduction and bridge structure uising it

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020150045754A KR20160117089A (en) 2015-03-31 2015-03-31 Fairing for vibration reduction and bridge structure uising it

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111441234A (en) * 2020-03-27 2020-07-24 中南大学 Deformable air nozzle for inhibiting wind-induced vibration of bridge

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111441234A (en) * 2020-03-27 2020-07-24 中南大学 Deformable air nozzle for inhibiting wind-induced vibration of bridge
CN111441234B (en) * 2020-03-27 2021-04-20 中南大学 Deformable air nozzle for inhibiting wind-induced vibration of bridge

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