CN104389263A - High-speed railway bridge wind blocking structure - Google Patents
High-speed railway bridge wind blocking structure Download PDFInfo
- Publication number
- CN104389263A CN104389263A CN201410700906.4A CN201410700906A CN104389263A CN 104389263 A CN104389263 A CN 104389263A CN 201410700906 A CN201410700906 A CN 201410700906A CN 104389263 A CN104389263 A CN 104389263A
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- column
- wind
- speed railway
- shielding structure
- verge board
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Classifications
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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
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
- E01F7/00—Devices affording protection against snow, sand drifts, side-wind effects, snowslides, avalanches or falling rocks; Anti-dazzle arrangements ; Sight-screens for roads, e.g. to mask accident site
- E01F7/02—Snow fences or similar devices, e.g. devices affording protection against sand drifts or side-wind effects
- E01F7/025—Devices specially adapted for protecting against wind, e.g. screens, deflectors or attenuators at tunnel or lock entrances
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Devices Affording Protection Of Roads Or Walls For Sound Insulation (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention relates to a high-speed railway bridge wind blocking structure. An existing common-speed railway bridge wind prevention measure cannot meet the wind prevention requirement of a strong wind area high-speed railway bridge. The high-speed railway bridge wind blocking structure comprises vertical columns, a bent vertical column and a wind blocking plate, the vertical columns and the bent vertical column are vertically and fixedly spliced, the upper portion of the bent vertical column is vertical, the lower portion of the bent vertical column is bent towards a central line of a bridge body, the vertical portion of the upper portion of the bent vertical column is fixed at a flange of the bridge body, the bottom end is fixed to a box beam web or T-shaped beam horseshoe, the wind blocking plate is fixed between the longitudinally adjacent vertical columns, and a wind blocking plate hole is formed in the wind blocking plate. Safety of a bridge structure and the wind blocking structure is met, cross air acting on a train body is changed by the wind blocking structure, the critical wind speed of train safety operation is improved, train operation stability is improved, and operation faults are decreased.
Description
Technical field
the invention belongs to the windproof technical field of high-speed railway, be specifically related to a kind of high-speed railway bridge wind shielding structure.
Background technology
Xinjiang of China railway wind district wind speed is high, the wind phase long, seasonality is strong, pace of change is fast, and strong wind is arised suddenly, and has stronger destructiveness.Wherein Bai Lifeng district, three Shi Lifeng districts are one of China and even railway disaster caused by a windstorm is the most serious in the world area.Repeatedly there is the accident that train is turned over by large wind for many years, bring huge economic loss and serious social influence to the transport production of railway.
Existing research spininess carries out slow-moving vehicle, and the research about middle and high fast train is relatively less.Existing general fast railroad bridge draught exclusion device, adopts separate type bridge-type or keeps off with T beam the wind shielding structure form that the wall side direction that is cut is connected.High Speed Railway Trains speed is fast, axle heavy and light, aerodynamic force is much larger than the aerodynamic force of general fast railroad train, beam wind effect is larger on the impact of train aerodynamic-force, and the safety of the height of existing wind shielding structure, percent opening, windproof effect, column and connection all can not meet the Operational requirements of high-speed railway.The wind shielding structure ratio of keeping out the wind need consider high-speed railway bridge beam portion and substructure intensity, rigidity simultaneously, and combined structure feature, need ensure that the static and dynamic properties of train, bridge and wind shielding structure all meets specification, the safety of guarantee train operation and comfortableness simultaneously.Therefore need to study the bridge wind shielding structure being suitable for high-speed railway.
Summary of the invention
The object of this invention is to provide a kind of high-speed railway bridge wind shielding structure, improve the critical wind velocity of High Speed Railway Trains safe operation.
The technical solution adopted in the present invention is:
High-speed railway bridge wind shielding structure, is characterized in that:
Include column, bending column and verge board;
Described column and bending column splice fixing up and down; Bending column Upper vertical, bottom Xiang Liang body center line bends; Bending column Upper vertical partial fixing is in beam body edge of a wing place, and box girder web or T Liang Matichu are fixed in bottom;
Be fixed with verge board between longitudinally adjacent column, verge board be provided with verge board perforate.
Described column and bending column are H profile steel.
The column splicing seams of described column and bending column is positioned at more than bridge floor, and is provided with column scab, column scab is provided with column connecting bolt and column and bending column is connected and fixed up and down.
Described verge board is transverse wave steel plate; Every plate hight 0.5m, long 1.9m, thick 3-4mm, wave height 70mm; The upper and lower parallel combination height overall of eight plates is 4m;
Bridge floor above 0.5-1.5m scope open interior rate is 10%, and all the other scope open interior rates are 20%.
Two ends, described verge board left and right are provided with draw-in groove, and verge board is placed in draw-in groove, column more than bridge floor and bending column, by verge board set bolt, verge board are fixed on column and bending column.
Described bending column Upper vertical part is by being embedded in the pre-buried connecting bolt in the edge of a wing in the beam body edge of a wing in advance and beam body embedded sleeve barrel is fixed on the beam body edge of a wing.
Described bending column bottom is provided with bending column steel hinge, is fixed on box girder web or T beam water chestnut by the pre-buried otic placode of beam body pre-buried in box girder web or T beam water chestnut.
The present invention has the following advantages:
1) by carrying out system research to the structural form of high-speed railway bridge wind shielding structure and loading characteristic, the key technology of high-speed railway bridge windproof structure is defined.
For high speed railway box girder, combination T beam feature, have developed the wind shielding structure and connecting structure new model that match, solve the fatigue problem of structure and connecting bolt, improve structural entity safety; Have developed novel wind screen screen unit board, design is optimized to important parameters such as wave height, thickness of slab, aperture opening ratio, open-cellular forms, make wind shielding structure on wind field guiding, sea land distribution, material usage, construction and installation and environmental noise abatement, reach optimum.
2) important parameter such as height, percent opening that wind shielding structure is arranged is determined first.
By numerical simulation and wind tunnel test means, the windproof effect under the different wind shielding structure height of system research, show that best wind shielding structure height is 4m, the optimum opening porosity of coupling is 20%.If after wind shielding structure, train topple rollover moment be reduced to 20% of initial value.On bridge safe train operation speed limit and stop take turns critical wind velocity can improve 10m/s.
3) adopt weathering steel, reduce maintenance workload
Wind shielding structure column and corrugated sheet steel consider that Xinjiang region lacks rainwater, evaporation capacity is large, serious natural characteristic of simultaneously eroding, and adopts weathering steel.Utilize the air weather resisteant of weathering steel, reduce maintenance workload.
4) according to external wind pressure, wind shielding structure column and the concrete size of verge board is optimized
Wind shielding structure obtains beam wind three component aerodynamic parameter in conjunction with the ambient wind velocity in wind district, bridge height, bridge location landform, geographical coefficient and wind tunnel test, optimizes column and verge board size.Wind shielding structure can be divided into one-sided, bilateral two kinds of forms, and the column cross-section height that keeps out the wind is divided into 250mm, 200mm, 175mm three types, and the thickness of verge board is divided into 4mm, 3mm two type.While meeting train beam wind operation security, ensure that the reasonability of wind shielding structure global design, economy.
5) applicability is strong, and can support the use with the bridge such as high-speed railway Common Span case beam, T beam, special span Box Continuous, maintenance is convenient, good endurance
Wind shielding structure adopts the mode be directly connected with beam, utilizes beam body as the basis of wind shielding structure, can with high-speed railway standard container beam, combine T beam and other special construction supports the use; Can adapt to the arrangement requirement of high, the grade separation of different bridge, flood discharge, cost saving is convenient to maintenance simultaneously.
6) column, verge board connect all employing double nut and the locking mode with hollow pin, ensure that the reliability of connection
The connection of plate and column and plate and plate all adopts and arranges double nut and the locking mode with hollow pin.Improve the reliability of connected mode.Paravent bolt hole, in conjunction with on-site actual situations, consider to adopt oval bolt hole, so that in-site installation, all setting up pad meets reliable power transmission needs simultaneously.
Accompanying drawing explanation
Fig. 1 is case beam wind shielding structure schematic diagram.
Fig. 2 is T beam wind shielding structure schematic diagram.
Fig. 3 is verge board front view.
Fig. 4 is verge board lateral view.
Fig. 5 is column A full-page proof schematic diagram.
Fig. 6 is column B full-page proof schematic diagram.
Fig. 7 is column C full-page proof schematic diagram.
Fig. 8 is edge of a wing place built-in fitting schematic diagram.
Fig. 9 is box girder web place built-in fitting schematic diagram.
Figure 10 is T beam water chestnut place built-in fitting schematic diagram.
Figure 11 is column splicing connection side view.
Figure 12 is that column splicing connects front view.
In figure, 1-column, 2-bends column, 3-column splicing seams, 4-contact net column, 5-verge board, the perforate of 6-verge board, 7-draw-in groove, 8-verge board set bolt, 9-column scab, the pre-buried connecting bolt in the 10-edge of a wing, 11-bends column steel hinge, 12-beam body embedded sleeve barrel, the pre-buried otic placode of 13-beam body, 14-column connecting bolt.
Detailed description of the invention
Below in conjunction with detailed description of the invention, the present invention will be described in detail.
The present invention proposes a kind of brand-new bridge wind shielding structure form, under the prerequisite meeting bridge construction and wind shielding structure safety, the beam wind effect be applied on car body is changed by arranging wind shielding structure, improve the critical wind velocity of train safe operation, add the stability of train operation, decrease operation fault, thus for train safe on wind district bridge by providing favourable guarantee.
Involved a kind of high-speed railway bridge wind shielding structure, is applicable to the bridge construction of case beam and combination T beam, is installed on Bridge Beam portion windward side, include column 1, bending column 2 and verge board 5.
Described column 1 and bending column 2 are H profile steel, and (section form is divided into cross section, H250 × 250 × 9 × 14, cross section, H200 × 200 × 8 × 12, three kinds, cross section, H175 × 175 × 7.5 × 11), longitudinal pitch 2.0m, splicing is fixing up and down, column splicing seams 3 is positioned at more than bridge floor, is provided with column scab 9, column scab 9 is provided with column connecting bolt 14 and column 1 and bending column about 2 is connected and fixed.Bending column 2 Upper vertical, bottom Xiang Liang body center line bends.Bending column 2 Upper vertical part is by being embedded in the pre-buried connecting bolt 10 in the edge of a wing in the beam body edge of a wing in advance and beam body embedded sleeve barrel 12 is fixed on beam body edge of a wing Upper vertical partial fixing in beam body edge of a wing place.Bottom is provided with bending column steel hinge 11, is fixed on box girder web or T beam water chestnut by the pre-buried otic placode 13 of beam body pre-buried in box girder web or T beam water chestnut.Across beam seam place column be adaptive temperature change cause flexible, flange width needs suitably widen as required.
Verge board 5 is fixed with between longitudinally adjacent column 1.Described verge board 5 is transverse wave steel plate; For ease of installing and manufacturing, be vertically divided into 8 module unit plates, every plate hight 0.5m, long 1.9m, thick 3-4mm, wave height 70mm; The upper and lower parallel combination height overall of eight plates is 4m.Verge board 5 is provided with verge board perforate 6, is nose circle shape hole, bridge floor above 0.5-1.5m scope open interior rate is 10%, and all the other scope open interior rates are 20%.Combination percent opening not only ensure that the overall percent opening of structure is less than 20%, meanwhile, reduces perforate, can further improve checking effect for the downside of train checking most pronounced effects.Verge board about 5 two ends are provided with draw-in groove 7, and column 1 more than bridge floor and bending column 2 are placed in draw-in groove 7, by verge board set bolt 8, verge board 5 are fixed on column 1 and bending column 2.
Sequence of construction is generally arranged to, bury wind shielding structure built-in fitting → build box girder body → actual measurement built-in fitting position underground when the assembling reinforcement of beam factory, and the beam body that should meet design requirement → set up → the steel beam column processing space concentration pre-casting column 1 of work point annex, wind shielding structure such as bending column 2, verge board 5 etc. all parts → be transported to scene → assembled column mounting tool → installations bending column 2 → install column 1 and connect with column scab 9 column 1 and bending column 2 → by from top to bottom sequentially successively mounting block aerofoil 5 contain the bolt between draw-in groove → mounting block aerofoil 5.
Column 1, bending column 2 and verge board 5 and connecting bolt etc. are all welded at produce in factory, after completing, carry out examination and spell, after precision meets the demands, be transported to scene in factory.
After wind shielding structure is checked, adjusting, first just twist high-strength bolt, just twist complete high-strength bolt hammering method inspection, and draw linear mark on bolt, nut, packing ring and component, be convenient to check and twist with or without leakage when twisting eventually and whether packing ring or bolt rotate.Twist eventually and adopt calibrated wrench method, use front torque wrench to demarcate, its torque error must not be greater than use torque value ± 5%.The first of high-strength bolt twists and twists eventually and should complete within same working day.
Built-in fitting and additional anchor reinforcing bar and steel plate, collide if having with bellows in installation process, can suitable mobile reinforcing bar or bending, and should ensure the requirement of Minimal Protective layer.
This verge board 5 adopts corrugated sheet steel with holes, verge board 5 not only can change a part of incoming flow wind by the wind direction after verge board, also incoming flow wind can be made to form air turbulence after plate by verge board later, the kinetic energy of incoming flow wind can be lost to greatest extent, reduce the wind speed of incoming flow wind, thus reach the object of keeping out the wind.
By numerical flow simulation and wind tunnel test checking, bridge is arranged high 3.5-4.0m, ventilative rate is after the paravent of 20%, the wind-force effect suffered by train is about without 20% during paravent.Significant to raising train operating safety effect after paravent is set as can be seen here.
All there is strong wind weather on Xinjiang of China, Inner Mongol and the ground such as coastal, and strong wind gives the transportation safety of local Rail Highway, lives and properties cause serious threat and heavy economic losses.If this novel railway bridge paravent is applied to these wind district railway, highway bridges, not only greatly can save the investment of engineering itself, and railway under strong wind weather, highway idle time can be greatly reduced, reduce the economic loss that hazard weather produces.Meanwhile, as a safe protective engineering, it prevents the major accidents such as overturning, derailing, facilitates travelling, ensures personal safety, and the positive social influence that raising railway prestige and the sense of security produce cannot be weighed by economy.
Content of the present invention is not limited to cited by embodiment, and the conversion of those of ordinary skill in the art by reading manual of the present invention to any equivalence that technical solution of the present invention is taked, is claim of the present invention and contains.
Claims (7)
1. high-speed railway bridge wind shielding structure, is characterized in that:
Include column (1), bending column (2) and verge board (5);
Described column (1) and bending column (2) are spliced fixing up and down; Bending column (2) Upper vertical, bottom Xiang Liang body center line bends; Bending column (2) Upper vertical partial fixing is in beam body edge of a wing place, and box girder web or T Liang Matichu are fixed in bottom;
Be fixed with verge board (5) between longitudinally adjacent column (1), verge board (5) be provided with verge board perforate (6).
2. high-speed railway bridge wind shielding structure according to claim 1, is characterized in that:
Described column (1) and bending column (2) are H profile steel.
3. high-speed railway bridge wind shielding structure according to claim 2, is characterized in that:
The column splicing seams (3) of described column (1) and bending column (2) is positioned at more than bridge floor, and be provided with column scab (9), column scab (9) is provided with column connecting bolt (14) and column (1) and bending column (2) are connected and fixed up and down.
4. high-speed railway bridge wind shielding structure according to claim 3, is characterized in that:
Described verge board (5) is transverse wave steel plate; Every plate hight 0.5m, long 1.9m, thick 3-4mm, wave height 70mm; The upper and lower parallel combination height overall of eight plates is 4m;
Bridge floor above 0.5-1.5m scope open interior rate is 10%, and all the other scope open interior rates are 20%.
5. high-speed railway bridge wind shielding structure according to claim 4, is characterized in that:
Described verge board (5) two ends, left and right are provided with draw-in groove (7), verge board (5) is placed in draw-in groove (7), column (1) more than bridge floor and bending column (2), be fixed on column (1) and bending column (2) by verge board set bolt (8) by verge board (5).
6. high-speed railway bridge wind shielding structure according to claim 5, is characterized in that:
Described bending column (2) Upper vertical part is by being embedded in the pre-buried connecting bolt in the edge of a wing (10) in the beam body edge of a wing in advance and beam body embedded sleeve barrel (12) is fixed on the beam body edge of a wing.
7. high-speed railway bridge wind shielding structure according to claim 6, is characterized in that:
Described bending column (2) bottom is provided with bending column steel hinge (11), is fixed on box girder web or T beam water chestnut by the pre-buried otic placode of beam body (13) pre-buried in box girder web or T beam water chestnut.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410700906.4A CN104389263B (en) | 2014-11-28 | 2014-11-28 | High-speed railway bridge wind shielding structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410700906.4A CN104389263B (en) | 2014-11-28 | 2014-11-28 | High-speed railway bridge wind shielding structure |
Publications (2)
| Publication Number | Publication Date |
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| CN104389263A true CN104389263A (en) | 2015-03-04 |
| CN104389263B CN104389263B (en) | 2016-06-29 |
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| CN201410700906.4A Active CN104389263B (en) | 2014-11-28 | 2014-11-28 | High-speed railway bridge wind shielding structure |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105672151A (en) * | 2015-11-10 | 2016-06-15 | 北京交通大学 | Snow-preventing plate for combined box type rail beam with overhung bottom plate in suspension type monorail transportation |
| CN108222051A (en) * | 2018-03-23 | 2018-06-29 | 中铁二院工程集团有限责任公司 | A kind of contact net upright post basic of railway steel reinforced concrete bondbeam and steel reinforced concrete combination bridge |
| CN109024325A (en) * | 2018-08-24 | 2018-12-18 | 中铁第勘察设计院集团有限公司 | L shape column adds diagonal brace to add baffle bridge wind shielding structure |
| CN113652979A (en) * | 2021-08-25 | 2021-11-16 | 吉林建筑大学 | Adjustable windbreak for bridge construction |
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| KR100430402B1 (en) * | 2003-08-21 | 2004-05-04 | 보국산업(주) | Apparatus of gateway for a bridge-beam |
| KR20050121167A (en) * | 2004-07-01 | 2005-12-26 | 정혁수 | Bridge inspection road |
| CN101058971A (en) * | 2006-04-17 | 2007-10-24 | 同济大学 | Wind fairing structure for controlling buffet of cable-stayed bridge |
| CN201722593U (en) * | 2010-05-25 | 2011-01-26 | 中铁二院工程集团有限责任公司 | Rigid suspender for high-speed railway steel bowstring arch bridge |
| CN204282195U (en) * | 2014-11-28 | 2015-04-22 | 中铁第一勘察设计院集团有限公司 | A kind of high-speed railway bridge wind shielding structure |
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2014
- 2014-11-28 CN CN201410700906.4A patent/CN104389263B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100430402B1 (en) * | 2003-08-21 | 2004-05-04 | 보국산업(주) | Apparatus of gateway for a bridge-beam |
| KR20050121167A (en) * | 2004-07-01 | 2005-12-26 | 정혁수 | Bridge inspection road |
| CN101058971A (en) * | 2006-04-17 | 2007-10-24 | 同济大学 | Wind fairing structure for controlling buffet of cable-stayed bridge |
| CN201722593U (en) * | 2010-05-25 | 2011-01-26 | 中铁二院工程集团有限责任公司 | Rigid suspender for high-speed railway steel bowstring arch bridge |
| CN204282195U (en) * | 2014-11-28 | 2015-04-22 | 中铁第一勘察设计院集团有限公司 | A kind of high-speed railway bridge wind shielding structure |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105672151A (en) * | 2015-11-10 | 2016-06-15 | 北京交通大学 | Snow-preventing plate for combined box type rail beam with overhung bottom plate in suspension type monorail transportation |
| CN108222051A (en) * | 2018-03-23 | 2018-06-29 | 中铁二院工程集团有限责任公司 | A kind of contact net upright post basic of railway steel reinforced concrete bondbeam and steel reinforced concrete combination bridge |
| CN109024325A (en) * | 2018-08-24 | 2018-12-18 | 中铁第勘察设计院集团有限公司 | L shape column adds diagonal brace to add baffle bridge wind shielding structure |
| CN113652979A (en) * | 2021-08-25 | 2021-11-16 | 吉林建筑大学 | Adjustable windbreak for bridge construction |
| CN113652979B (en) * | 2021-08-25 | 2022-09-23 | 吉林建筑大学 | Bridge construction is with adjustable windbreak |
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| CN104389263B (en) | 2016-06-29 |
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