CN106638278A - Pneumatic structure for improving flutter performance of dual-layer road steel truss suspension bridge - Google Patents
Pneumatic structure for improving flutter performance of dual-layer road steel truss suspension bridge Download PDFInfo
- Publication number
- CN106638278A CN106638278A CN201710105493.9A CN201710105493A CN106638278A CN 106638278 A CN106638278 A CN 106638278A CN 201710105493 A CN201710105493 A CN 201710105493A CN 106638278 A CN106638278 A CN 106638278A
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- CN
- China
- Prior art keywords
- bridge
- flutter
- truss
- improving
- pneumatic structure
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- 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
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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
- E01D11/00—Suspension or cable-stayed bridges
- E01D11/02—Suspension bridges
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D6/00—Truss-type bridges
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D2101/00—Material constitution of bridges
- E01D2101/30—Metal
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention discloses a pneumatic structure for improving the flutter performance of a dual-layer road steel truss suspension bridge. The pneumatic structure is arranged on the dual-layer road steel truss suspension bridge and used for improving flutter stability of the bridge. Two vertical steady plates are installed below a lower-layer truss bridge face in the length direction, are symmetrically arranged on the two sides of the truss bottom and penetrate through cross beams of a lower-layer truss; the lower edges of the steady plates are attached to the upper planes of detector car rails of the truss bottom to form a whole; and thus the steady plates and the detector car rails form the pneumatic structure for improving the flutter performance jointly. The pneumatic structure is arranged below the lower-layer bridge face and combined with the detector car rails, the steady plates can be used as longitudinal beams to participate in structural stress and share chord loads, the effective height of the pneumatic structure and the integral rigidity of the bridge are increased, and the flutter stability of the bridge is improved.
Description
Technical field
The present invention relates to wind engineering of bridge field, more particularly to the Flutter Control field of double-deck highway steel trusses suspension bridge.
Background technology
Steel truss girder has larger rigidity, and bearing capacity is stronger, be large-span suspension bridge stiff girder Jing frequently with one kind
Form.But compared with streamline steel box beam, the Flutter Performance of highway steel trusses suspension bridge is weaker, it usually needs adopt aerodynamic Measures
To improve its flutter stability.Traditional single bridge deck steel trussed girder suspension bridge is generally by the way of upper steadying plate, lower steadying plate
Improve the Flutter Performance (Fig. 1) of bridge.For double deck steel trussed girder suspension bridge (Fig. 2), due to version it is special, upper and lower bridge
There is serious flowing interference between face, aerodynamic characteristic is sufficiently complex, stiff girder cannot be effectively improved using traditional aerodynamic Measures
Flutter Performance, even its Flutter Performance can deteriorate sometimes.
The content of the invention
In view of prior art is not enough above, the purpose of the present invention is to propose to a kind of hang for improving double-deck highway steel trusses
The aerodynamic Measures of the Flutter Performance of cable bridge, are allowed to overcome the above-mentioned deficiency of prior art.
Realize that the means adopted by the object of the invention are：
A kind of pneumatic construction for improving double-deck highway steel trusses suspension bridge Flutter Performance, is arranged on double-deck highway steel trusses and hangs
To improve the flutter stability of bridge on cable bridge.Characterized in that, in the symmetrically elongated installation two of the lower section of lower floor's truss bridge floor
Block vertical stability plate, is arranged in the low both sides of beam the crossbeam through lower floor's truss；The lower edge of steadying plate and the inspection car at beam bottom
On track, plane fits, and integrally formed；Steadying plate is collectively constituted with inspection track road and improves Bridge Flutter performance
Pneumatic construction.
Further, in actual enforcement, the requirement of wind speed is checked to choose to install differing heights rule to tremor according to bridge structure
The inspection track road of lattice.Check that track road is higher, the critical wind speed of flutter of structure is higher.
Using the structure of the present invention, the steadying plate for being arranged in below lower floor's bridge floor and combining with inspection track road is pneumatic to arrange
Apply, steadying plate can participate in structure stress as " longeron ", share load on the chord.This pneumatic construction is increased using inspection track road
The effective depth of aerodynamic Measures, improves the flutter stability of bridge, it is ensured that structure safety.The construction is with bridge structure certainly
Body component combines, and compared with separately installed aerodynamic Measures, also acting increases rigidity, saving steel, the effect for simplifying structure.
Description of the drawings
Fig. 1 is the pneumatic organigram of existing monolayer highway steel trusses suspension bridge tremor.
Fig. 2 is double-deck highway steel trusses suspension bridge standard section figure.
Fig. 3 is that the pneumatic construction of tremor of the present invention arranges schematic diagram, and wherein Fig. 3 a are integral installation schematic diagram, Fig. 3 b steadying plates
Local scheme of installation, is steadying plate side view at Fig. 3 c.
Fig. 4 a are embodiment of the present invention steadying plate local size and scheme of installation, and Fig. 4 b are embodiment of the present invention steadying plate
Side view.
Specific embodiment
Further detailed description is done to the present invention below by specific example with reference.
Embodiment one
Can be seen that with reference to Fig. 3 and Fig. 4, a kind of specific embodiment of the present invention is：In double-deck highway steel trusses lower floor bridge
The lower section in face is elongated to install two blocks of vertical stability plates to improve the flutter stability of bridge.Two pieces of steadying plates are arranged symmetrically in down
The lower section of layer truss bridge floor, is the 1/4 of beam body width B apart from B1 away from beam body edge, crossbeam of the steadying plate through lower floor's truss,
The lower edge of steadying plate fits to form entirety with the upper plane for checking track road at beam bottom；In Fig. 3 and Fig. 4,1 represents crossbeam, 2 generations
Table look-up track road, 3 is two steadying plates.Stable plate hight H=1887mm, checks the high D=340mm in track road.
Claims (2)
1. a kind of pneumatic construction for improving double-deck highway steel trusses suspension bridge Flutter Performance, is arranged on double-deck highway steel trusses suspension cable
To improve the flutter stability of bridge on bridge, it is characterised in that install two pieces of vertical stabilities in the lower section of lower floor's truss bridge floor
Plate, is symmetrically arranged in the both sides at beam bottom the crossbeam through lower floor's truss；The lower edge of steadying plate and the inspection track road at beam bottom
Upper plane fits, integrally formed；Steadying plate collectively constitutes the pneumatic structure for improving Bridge Flutter performance with inspection track road
Make.
2. the pneumatic construction for improving double-deck highway steel trusses suspension bridge Flutter Performance according to claim 1, its feature exist
In, check the requirement of wind speed to choose to install the inspection track road of differing heights specification to tremor according to bridge structure, inspection track road is got over
Height, the critical wind speed of flutter of structure are higher.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710105493.9A CN106638278B (en) | 2017-02-26 | 2017-02-26 | A kind of pneumatic construction for improving double-deck highway steel trusses suspension bridge Flutter Performance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710105493.9A CN106638278B (en) | 2017-02-26 | 2017-02-26 | A kind of pneumatic construction for improving double-deck highway steel trusses suspension bridge Flutter Performance |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106638278A true CN106638278A (en) | 2017-05-10 |
| CN106638278B CN106638278B (en) | 2018-04-13 |
Family
ID=58846886
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710105493.9A Expired - Fee Related CN106638278B (en) | 2017-02-26 | 2017-02-26 | A kind of pneumatic construction for improving double-deck highway steel trusses suspension bridge Flutter Performance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106638278B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109235227A (en) * | 2018-10-23 | 2019-01-18 | 西南交通大学 | It is a kind of improve people's row suspension cable vestibule bridge girder galloping stability deflector pneumatically construct |
| CN110373990A (en) * | 2019-07-22 | 2019-10-25 | 中铁大桥局集团有限公司 | The double-deck whole hole of Combined steel truss beam manufactures and erection construction method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000104219A (en) * | 1998-09-28 | 2000-04-11 | Nkk Corp | Erection of combined truss bridge |
| CN101736687A (en) * | 2008-11-19 | 2010-06-16 | 中交公路规划设计院有限公司 | Pneumatic control device for improving flutter stability of steel trussed girder suspension bridge |
| CN203593948U (en) * | 2013-12-02 | 2014-05-14 | 西南交通大学 | Chattering stability optimizing assembly for suspension bridge with slotted truss girder |
| CN104499415A (en) * | 2014-08-15 | 2015-04-08 | 上海市政工程设计研究总院（集团）有限公司 | Main girder structure system of double-layer bridge deck cable-stayed bridge |
| CN204282192U (en) * | 2014-08-15 | 2015-04-22 | 上海市政工程设计研究总院（集团）有限公司 | A kind of double deck steel truss girder |
| CN206553911U (en) * | 2017-02-26 | 2017-10-13 | 西南交通大学 | A kind of pneumatic construction for improving double-deck highway steel trusses suspension bridge Flutter Performance |
-
2017
- 2017-02-26 CN CN201710105493.9A patent/CN106638278B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000104219A (en) * | 1998-09-28 | 2000-04-11 | Nkk Corp | Erection of combined truss bridge |
| CN101736687A (en) * | 2008-11-19 | 2010-06-16 | 中交公路规划设计院有限公司 | Pneumatic control device for improving flutter stability of steel trussed girder suspension bridge |
| CN203593948U (en) * | 2013-12-02 | 2014-05-14 | 西南交通大学 | Chattering stability optimizing assembly for suspension bridge with slotted truss girder |
| CN104499415A (en) * | 2014-08-15 | 2015-04-08 | 上海市政工程设计研究总院（集团）有限公司 | Main girder structure system of double-layer bridge deck cable-stayed bridge |
| CN204282192U (en) * | 2014-08-15 | 2015-04-22 | 上海市政工程设计研究总院（集团）有限公司 | A kind of double deck steel truss girder |
| CN206553911U (en) * | 2017-02-26 | 2017-10-13 | 西南交通大学 | A kind of pneumatic construction for improving double-deck highway steel trusses suspension bridge Flutter Performance |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109235227A (en) * | 2018-10-23 | 2019-01-18 | 西南交通大学 | It is a kind of improve people's row suspension cable vestibule bridge girder galloping stability deflector pneumatically construct |
| CN110373990A (en) * | 2019-07-22 | 2019-10-25 | 中铁大桥局集团有限公司 | The double-deck whole hole of Combined steel truss beam manufactures and erection construction method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106638278B (en) | 2018-04-13 |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180413 Termination date: 20210226 |
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| CF01 | Termination of patent right due to non-payment of annual fee |