CN104389263B - High-speed railway bridge wind shielding structure - Google Patents
High-speed railway bridge wind shielding structure Download PDFInfo
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- CN104389263B CN104389263B CN201410700906.4A CN201410700906A CN104389263B CN 104389263 B CN104389263 B CN 104389263B CN 201410700906 A CN201410700906 A CN 201410700906A CN 104389263 B CN104389263 B CN 104389263B
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- column
- deep bead
- shielding structure
- wind shielding
- bending
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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
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- 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)
- Bridges Or Land Bridges (AREA)
- Devices Affording Protection Of Roads Or Walls For Sound Insulation (AREA)
Abstract
The present invention relates to a kind of high-speed railway bridge wind shielding structure.The railroad bridge draught exclusion device of existing general speed cannot meet the Radix Saposhnikoviae requirement of strong wind district high-speed railway bridge.The present invention includes column, bending column and deep bead；Column and bending column splice fixing up and down；Bending column Upper vertical, bottom bends to beam body centrage；Bending column Upper vertical part is fixed on beam body edge of a wing place, and box girder web or T Liang Matichu are fixed in bottom；It is fixed with deep bead between longitudinally adjacent column, deep bead is provided with deep bead perforate.The present invention, under the premise meeting bridge structure and wind shielding structure safety, by arranging the beam wind effect that wind shielding structure change is applied on car body, improves the critical wind velocity of train safe operation, adds the stability of train operation, decrease operation fault.
Description
Technical field
The invention belongs to high-speed railway Radix Saposhnikoviae technical field, be specifically related to a kind of high-speed railway bridge wind shielding structure.
Background technology
Xinjiang of China railway wind district wind speed height, wind phase length, seasonality are 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 or even railway disaster caused by a windstorm is the most serious in the world area.The accident repeatedly occurring train to be turned over by strong wind for many years, brings huge economic loss and serious social influence to the transport production of railway.
Existing research is many to be carried out for slow-moving vehicle, and the research about middle and high speed train is relatively fewer.The railroad bridge draught exclusion device of existing general speed, adopts separate type bridge-type or the wind shielding structure form laterally attached with T beam gear quarrel wall.High Speed Railway Trains speed is fast, axle heavy and light, aerodynamic force is much larger than the aerodynamic force of general speed railroad train, beam wind effect is bigger 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 to consider high-speed railway bridge beam portion and substructure intensity, rigidity simultaneously, and combined structure feature, need to ensure that the static and dynamic properties of train, bridge and wind shielding structure is satisfied by 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
It is an object of the invention 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, it is characterised in that:
Include column, bending column and deep bead；
Described column and bending column splice fixing up and down；Bending column Upper vertical, bottom bends to beam body centrage；Bending column Upper vertical part is fixed on beam body edge of a wing place, and box girder web or T Liang Matichu are fixed in bottom；
It is fixed with deep bead between longitudinally adjacent column, deep bead is provided with deep bead 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 splice plate, column splice plate is provided with column connecting bolt and is vertically connected with fixing by column and bending column.
Described deep bead is transverse wave steel plate；Every plate hight 0.5m, long 1.9m, thick 3-4mm, wave height 70mm；The eight upper and lower parallel combination height overalls of plate are 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 deep bead left and right are provided with draw-in groove, and deep bead is placed in draw-in groove, column more than bridge floor and bending column, by deep bead fixing bolt, deep bead are fixed on column and bending column.
Described bending column Upper vertical part is fixed on the beam body edge of a wing by the pre-buried connecting bolt in the edge of a wing and the beam body embedded sleeve barrel being embedded in the beam body edge of a wing in advance.
Described bending column bottom is provided with bending column steel hinge, is fixed on box girder web or T beam Horse hoof by the pre-buried otic placode of beam body pre-buried in box girder web or T beam Horse hoof.
The invention have the advantages that
1) by the structural form of high-speed railway bridge wind shielding structure and loading characteristic are carried out systematic study, 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 matched and connecting structure new model, solve the fatigue problem of structure and connecting bolt, improve structure overall security；Have developed novel wind screen screen cell board, the important parameters such as wave height, thickness of slab, aperture opening ratio, open-cellular form are optimized design, make wind shielding structure reach optimum on wind field guiding, sea land distribution, material usage, construction and installation and environmental noise abatement.
2) important parameters such as the height of wind shielding structure setting, percent opening are determined first.
By numerical simulation and wind tunnel test means, the windproof effect under systematic study difference wind shielding structure height, showing 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 the 20% of initial value.The speed limit of safe train operation and stop the critical wind velocity of wheel and can improve 10m/s on bridge.
3) adopt weathering steel, reduce maintenance workload
Wind shielding structure column and corrugated sheet steel consider that Xinjiang region lacks rainwater, evaporation capacity greatly, and serious natural characteristic of simultaneously eroding 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 deep bead are 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 deep bead size.Wind shielding structure can be divided into one side, two kinds of forms of bilateral, and the column cross-section height that keeps out the wind is divided into 250mm, 200mm, 175mm three types, and the thickness of deep bead is divided into 4mm, 3mm two types.While meeting train beam wind operation security, it is ensured that the reasonability of wind shielding structure global design, economy.
5) suitability is strong, can support the use with the bridge such as high-speed railway Common Span box beam, T beam, special span Box Continuous, and maintenance is convenient, good endurance
Wind shielding structure adopts the mode being directly connected to beam, utilizes beam body as the basis of wind shielding structure, can support the use with high-speed railway standard box beam, combination T beam and other special construction；Adapting to the arrangement requirement of different bridge height, grade separation, flood discharge, cost saving is easy to maintenance simultaneously.
6) column, deep bead connect double nut and the locking mode with hollow pin of all adopting, it is ensured 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, it is considered to adopting oval bolt hole, in order to in-site installation, all setting up pad meets reliable power transmission needs simultaneously.
Accompanying drawing explanation
Fig. 1 is box beam wind shielding structure schematic diagram.
Fig. 2 is T beam wind shielding structure schematic diagram.
Fig. 3 is deep bead front view.
Fig. 4 is deep bead side 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 Horse hoof place built-in fitting schematic diagram.
Figure 11 is that column splicing connects 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-deep bead, 6-deep bead perforate, 7-draw-in groove, 8-deep bead fixes bolt, 9-column splice plate, 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 premise meeting bridge structure and wind shielding structure safety, the beam wind effect being applied on car body by arranging wind shielding structure to change, improve the critical wind velocity of train safe operation, add the stability of train operation, decrease operation fault, thus passing through to provide favourable guarantee on wind district bridge for train safe.
Involved a kind of high-speed railway bridge wind shielding structure, it is adaptable to the bridge structure of box beam and combination T beam, is installed on Bridge Beam portion windward side, includes column 1, bending column 2 and deep bead 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 of 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 splice plate 9, column splice plate 9 is provided with column connecting bolt 14 and is vertically connected with fixing by column 1 and bending column 2.Bending column 2 Upper vertical, bottom bends to beam body centrage.Bending column 2 Upper vertical part is fixed on beam body edge of a wing Upper vertical part is fixed on beam body edge of a wing place by the pre-buried connecting bolt 10 in the edge of a wing and the beam body embedded sleeve barrel 12 being embedded in the beam body edge of a wing in advance.Bottom is provided with bending column steel hinge 11, is fixed on box girder web or T beam Horse hoof by the pre-buried otic placode 13 of beam body pre-buried in box girder web or T beam Horse hoof.Bridge seam place column be adaptive temperature change cause flexible, flange width needs suitably widen as required.
It is fixed with deep bead 5 between longitudinally adjacent column 1.Described deep bead 5 is transverse wave steel plate；For ease of installing and manufacturing, vertically it is divided into 8 module unit plates, every plate hight 0.5m, long 1.9m, thick 3-4mm, wave height 70mm；The eight upper and lower parallel combination height overalls of plate are 4m.Being provided with deep bead perforate 6 on deep bead 5, be 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%, simultaneously for the downside minimizing perforate to train checking most pronounced effects, can further improve checking effect.Deep bead about 5 two ends are provided with draw-in groove 7, and more than bridge floor column 1 and bending column 2 are placed in draw-in groove 7, fix bolt 8 by deep bead and deep bead 5 is fixed on column 1 and bending column 2.
Sequence of construction is typically arranged as, 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 adnexa, the bending wind shielding structure such as column 2, deep bead 5 all parts → transport to on-the-spot → assembled column mounting tool → installations bending column 2 → install column 1 and connect with column splice plate 9 column 1 and bend column 2 → by from top to bottom sequentially successively installation deep bead 5 containing the bolt between draw-in groove → installation deep bead 5.
Column 1, bending column 2 and deep bead 5 and connecting bolt etc. all factory make be welded, after completing, factory carry out examination spell, precision meet requirement after, be transported to scene.
After wind shielding structure is checked, adjusting, first just twist high-strength bolt, just twist complete high-strength bolt hammering method inspection, and on bolt, nut, packing ring and component, draw linear mark, it is simple 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 cannot be greater than using 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, colliding if having with corrugated tube in installation process, can suitably move reinforcing bar or bending, and should ensure that the requirement of Minimal Protective layer.
This deep bead 5 adopts corrugated sheet steel with holes, deep bead 5 not only can change a part of incoming flow wind by the wind direction after deep bead, incoming flow wind can also be made by air turbulence after formation plate after deep bead, the kinetic energy of incoming flow wind can be lost to greatest extent, reduce the wind speed of incoming flow wind, thus reaching the purpose kept out the wind.
Verified by numerical flow simulation and wind tunnel test, bridge arranges high 3.5-4.0m, ventilative rate be 20% paravent after, 20% when the wind-force effect suffered by train is about without paravent.After paravent is set as can be seen here to improve train operating safety effect be significant.
All there is strong wind weather on the Xinjiang of China, Inner Mongol and the ground such as coastal, and strong wind causes serious threat and heavy economic losses to the local transportation safety of Rail Highway, lives and properties.If this novel railway bridge paravent is applied to these wind district railway, highway bridges, not only can greatly save the investment of engineering itself, and the 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, it is ensured that personal safety, improves positive social influence produced by railway prestige and the security and cannot weigh by economy.
Present disclosure is not limited to cited by embodiment, and the conversion of any equivalence that technical solution of the present invention is taked by those of ordinary skill in the art by reading description of the present invention, the claim being the present invention is contained.
Claims (7)
1. high-speed railway bridge wind shielding structure, it is characterised in that:
Include column (1), bending column (2) and deep bead (5)；
Described column (1) and bending column (2) are spliced fixing up and down；Bending column (2) Upper vertical, bottom bends to beam body centrage；Bending column (2) Upper vertical part is fixed on beam body edge of a wing place, and box girder web or T Liang Matichu are fixed in bottom；
It is fixed with deep bead (5) between longitudinally adjacent column (1), deep bead (5) is provided with deep bead perforate (6).
2. high-speed railway bridge wind shielding structure according to claim 1, it is characterised 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, it is characterised in that:
The column splicing seams (3) of described column (1) and bending column (2) is positioned at more than bridge floor, and it is provided with column splice plate (9), column splice plate (9) is provided with column connecting bolt (14) column (1) and bending column (2) are vertically connected with fixing.
4. high-speed railway bridge wind shielding structure according to claim 3, it is characterised in that:
Described deep bead (5) is transverse wave steel plate；Every plate hight 0.5m, long 1.9m, thick 3-4mm, wave height 70mm；The eight upper and lower parallel combination height overalls of plate are 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, it is characterised in that:
Described deep bead (5) two ends, left and right are provided with draw-in groove (7), deep bead (5) is placed in draw-in groove (7), more than bridge floor column (1) and bending column (2), be fixed on deep bead (5) column (1) by the fixing bolt (8) of deep bead and bend column (2).
6. high-speed railway bridge wind shielding structure according to claim 5, it is characterised in that:
Described bending column (2) Upper vertical part is fixed on the beam body edge of a wing by the pre-buried connecting bolt in the edge of a wing (10) and the beam body embedded sleeve barrel (12) being embedded in the beam body edge of a wing in advance.
7. high-speed railway bridge wind shielding structure according to claim 6, it is characterised in that:
Described bending column (2) bottom is provided with bending column steel hinge (11), is fixed on box girder web or T beam Horse hoof by the pre-buried otic placode of beam body (13) pre-buried in box girder web or T beam Horse hoof.
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 |
Applications Claiming Priority (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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| Publication Number | Publication Date |
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| CN104389263A CN104389263A (en) | 2015-03-04 |
| CN104389263B true 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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Families Citing this family (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 |
| CN113652979B (en) * | 2021-08-25 | 2022-09-23 | 吉林建筑大学 | Bridge construction is with adjustable windbreak |
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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 |
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