CN106498862A - A kind of strong wind atmosphere leeward area railway windbreak transition section structure - Google Patents
A kind of strong wind atmosphere leeward area railway windbreak transition section structure Download PDFInfo
- Publication number
- CN106498862A CN106498862A CN201611033844.1A CN201611033844A CN106498862A CN 106498862 A CN106498862 A CN 106498862A CN 201611033844 A CN201611033844 A CN 201611033844A CN 106498862 A CN106498862 A CN 106498862A
- Authority
- CN
- China
- Prior art keywords
- windbreak
- embankment
- changeover portion
- cutting
- wind
- Prior art date
- 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.)
- Granted
Links
Classifications
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Devices Affording Protection Of Roads Or Walls For Sound Insulation (AREA)
Abstract
The invention discloses a kind of strong wind atmosphere leeward area railway windbreak transition section structure, it is acute angle which connects embankment windbreak with the changeover portion of cutting windbreak and the angle of the extended line of embankment section windbreak, and changeover portion is 1 in the projected length on embankment elongated segment line direction and projected length ratio of the changeover portion on embankment elongated segment line direction:1.5‑1:2；The invention has the beneficial effects as follows：Reduce flow field mutation and air-flow acceleration that right angle transition causes, improve windbreak protection effect.
Description
Technical field
The invention belongs to field of engineering technology, is related to the structure design of Along Railway windbreak under strong wind atmosphere.
Background technology
Newly-built Lanzhou to Urumchi second channel (referred to as Lanzhou-Xinjiang the second double line) is passenger dedicated railway line, total length 1776.9
Km, is most long high-speed railway built in the world, and the first bar in the world passes through the high-speed railway in strong wind area.This area have long away from
From strong wind area, the wind phase is long, among Local topography 1 year natural law of the wind speed more than 17.2 m/s more than 100 days, maximum instantaneous wind
60 m/s of scooter.Feng Qu some areas wind speed is high, and wind direction and circuit near vertical, and train is mainly affected by beam wind, strong wind
The traffic safety of train is caused to have a strong impact on, becomes one of inland wind speed highest, the area of disaster caused by a windstorm most serious in the world.According to system
Meter, from nineteen sixty so far, amounting to 38 by wind-induced traffic safety accident, the stoppage in transit of the train caused because of strong wind is even more number not
Victory number, has had a strong impact on safety of railway traffic and conevying efficiency.China railways scientific worker, through exploration for many years, research,
Practice, it is proposed that the railway safe driving measure under bad wind environment：Implement speed limit or stop wheel, train shape reasonable in design,
Windbreak is set, sets up strong wind early warning system etc..One of important draught exclusion device of Lanzhou-Xinjiang Line for Passenger Transportation is exactly to build windbreak, its
In have windbreak section account for circuit overall length 65%.Part strong wind section is located at the Gobi deserf of relief, is routed through this
A little places define numerous cuttings and embankment.There are some researches show, cutting has certain capability of anti-wind, when cutting reach certain
During height, windbreak on cutting, need not be built, train can be with safety cutting.In embankment section, it is necessary to build windbreak, protect
Card train does not topple when strong wind atmosphere runs.By train experiment and site inspection, find aerodynamic performance and
The larger position of dynamics index occurs in the crossover position of embankment and cutting windbreak mostly.Its main cause is windbreak
The capability of anti-wind of the cutting that right angle transition is caused is mismatched with the embankment section for building windbreak, excites flow field to occur acutely to become
Change, so that train produces " rolling car " phenomenon at this, dynamics index such as derailment coefficients, transverse acceleration etc. are larger,
Have a strong impact on safety in operation and occupant comfort.Therefore, the present invention proposes a kind of strong wind atmosphere leeward area for the problems referred to above
New type railway windbreak transition section structure, the interim form of optimization design windbreak improve stability of the train by changeover portion.
Content of the invention
It is an object of the invention to provide a kind of new structure of windbreak transitional region, solves present in prior art
Problem.
Existing windbreak is right angle transition when embankment is with cutting windbreak transition, and this right angle transition structure does not consider
Embankment is poor with the Height of Wind Break Wall on cutting, is simply consistent with the Height of Wind Break Wall on embankment, causes a distant place to flow straight
There is larger air-flow mutation in angle transitional region and wind speed increases severely, and windbreak protection effect reduces.And novel wind screen wall transition knot
Structure is using chamferring gradual and connect the windbreak on embankment and cutting by the way of increasing step by step, in order to reduce right angle transition
The flow field mutation for causing and air-flow accelerate, and improve windbreak protection effect.
First according to real train test under strong wind atmosphere, live flow-field test finds embankment to the transition meeting of cutting windbreak right angle
Cause flow field mutation and aerodynamic performance of train to deteriorate, kinds of schemes is carried out using numerical simulation then and improves and optimizates right angle transition region
Domain, final determination changeover portion region adopt tangent value for 1：1.5-1：2 beveling is gradual, the windbreak transition structure that increases step by step
Effect is optimum.
A kind of strong wind atmosphere leeward area railway windbreak transition section structure, it is characterised in that：Connection embankment windbreak and road
The changeover portion of moat windbreak is acute angle with the angle of the extended line of embankment section windbreak, and changeover portion is perpendicular to embankment elongated segment line
Projected length on direction is 1 with projected length ratio of the changeover portion on embankment elongated segment line direction:1.5-1:2.
The height at changeover portion connection embankment end is identical with embankment Height of Wind Break Wall, and from connection embankment end to connection cutting end
Gradually rise until highly identical with dug way.
The invention has the beneficial effects as follows：
Embankment is compared to the right angle transition of cutting windbreak, new tangent value is 1：1.5-1：Gradual the increasing step by step of 2 beveling is kept out the wind
Wall transition structure, a distant place can be effectively reduced flow flow field mutation and wind speed increase, improve windbreak protection effect and
Wind area railway operation safety.
Description of the drawings
Fig. 1 is original windbreak embankment to cutting transition structure front view.
Fig. 2 is original windbreak embankment to cutting transition structure top view.
Fig. 3 is novel wind screen wall embankment to cutting transition structure front view.
Fig. 4 is novel wind screen wall embankment to cutting transition structure top view.
Fig. 5 be original with windbreak transition structure of the present invention under 1 line centrage of circuit above speed at 2.75 meters of height
Distribution curve comparison diagram.
Fig. 6 is velocity distribution curve comparison diagram at 2.75 meters of height above 2 line centrage of circuit.
1- embankment windbreaks, 2- changeover portion wind-shield walls, 3- cutting windbreaks.
Specific embodiment
In embankment, the offline road of windbreak is closer, and in cutting, windbreak is built on cutting, and offline road is distant, and
General cutting is higher because of physical features, there is a difference in height with the windbreak on embankment（It is 2 m herein）.Original embankment and cutting it
Between windbreak transition structure be right angle connection, and do not consider the impact of difference in height, connection Height of Wind Break Wall in right angle is kept off with embankment
Brattice is highly consistent.
Right angle transition is extended to tangent value for 1 to embankment direction with cutting windbreak transition structure by embankment of the present invention：
1.5-1：2 gradual transition, and consider that every 5 m length increases by 0.5 m Height of Wind Break Wall step by step in transitional region so that embankment keeps out the wind
Wall height is finally reached unanimity with cutting Height of Wind Break Wall.
Windbreak transition structure of the present invention adopts tangent value for 1：1.5-1：2 bevelings increase windbreak transition structure step by step and
On-right angle transition, flow field mutation when in the distance to flow arrival windbreak reduce because of the gradual of transition structure, so as to effectively carry
High aerodynamic performance of train of the windbreak under protection effect and strong wind atmosphere of the embankment with cutting transitional region.
Claims (2)
1. a kind of strong wind atmosphere leeward area railway windbreak transition section structure, it is characterised in that：Connection embankment windbreak and cutting
The changeover portion of windbreak is acute angle with the angle of the extended line of embankment section windbreak, and changeover portion is perpendicular to embankment elongated segment line side
Projected length upwards is 1 with projected length ratio of the changeover portion on embankment elongated segment line direction:1.5-1:2.
2. windbreak transition section structure according to claim 1, it is characterised in that：The height at changeover portion connection embankment end with
Embankment Height of Wind Break Wall is identical, and is gradually risen until highly identical with dug way from connection embankment end to connection cutting end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611033844.1A CN106498862B (en) | 2016-11-23 | 2016-11-23 | A kind of strong wind atmosphere leeward area railway windbreak transition section structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611033844.1A CN106498862B (en) | 2016-11-23 | 2016-11-23 | A kind of strong wind atmosphere leeward area railway windbreak transition section structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106498862A true CN106498862A (en) | 2017-03-15 |
| CN106498862B CN106498862B (en) | 2019-01-29 |
Family
ID=58328086
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611033844.1A Active CN106498862B (en) | 2016-11-23 | 2016-11-23 | A kind of strong wind atmosphere leeward area railway windbreak transition section structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106498862B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107386135A (en) * | 2017-07-27 | 2017-11-24 | 中南大学 | A kind of strong wind atmosphere leeward area railway protection from the wind General Method for Optimization |
| CN110685235A (en) * | 2019-11-05 | 2020-01-14 | 广州地铁设计研究院股份有限公司 | Overhead sound barrier for rail transit |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100655464B1 (en) * | 2006-01-12 | 2006-12-11 | 주식회사 경호엔지니어링 종합건축사사무소 | Road with two-step wind protection |
| CN101187200A (en) * | 2007-12-17 | 2008-05-28 | 四川大学 | Railway wind-proof sand-guiding wall |
| CN101967801A (en) * | 2010-10-25 | 2011-02-09 | 中南大学 | Wind-break wall of high speed railway |
| CN202081388U (en) * | 2011-05-03 | 2011-12-21 | 新津腾中筑路机械有限公司 | Wind break wall for high-speed railway |
| CN204780646U (en) * | 2015-06-03 | 2015-11-18 | 中国铁路总公司 | Electric Railway's windbreak under strong wind environment |
| CN205501859U (en) * | 2016-04-01 | 2016-08-24 | 中铁第一勘察设计院集团有限公司 | Wind -proof construction who increases on existing wind -break wall |
-
2016
- 2016-11-23 CN CN201611033844.1A patent/CN106498862B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100655464B1 (en) * | 2006-01-12 | 2006-12-11 | 주식회사 경호엔지니어링 종합건축사사무소 | Road with two-step wind protection |
| CN101187200A (en) * | 2007-12-17 | 2008-05-28 | 四川大学 | Railway wind-proof sand-guiding wall |
| CN101967801A (en) * | 2010-10-25 | 2011-02-09 | 中南大学 | Wind-break wall of high speed railway |
| CN202081388U (en) * | 2011-05-03 | 2011-12-21 | 新津腾中筑路机械有限公司 | Wind break wall for high-speed railway |
| CN204780646U (en) * | 2015-06-03 | 2015-11-18 | 中国铁路总公司 | Electric Railway's windbreak under strong wind environment |
| CN205501859U (en) * | 2016-04-01 | 2016-08-24 | 中铁第一勘察设计院集团有限公司 | Wind -proof construction who increases on existing wind -break wall |
Non-Patent Citations (2)
| Title |
|---|
| 《中国优秀硕士学位论文全文数据库（工程科技II辑）》 * |
| 《中国铁路》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107386135A (en) * | 2017-07-27 | 2017-11-24 | 中南大学 | A kind of strong wind atmosphere leeward area railway protection from the wind General Method for Optimization |
| CN107386135B (en) * | 2017-07-27 | 2020-06-05 | 中南大学 | General optimization method for wind-prevention facilities of railways in wind area under strong wind environment |
| CN110685235A (en) * | 2019-11-05 | 2020-01-14 | 广州地铁设计研究院股份有限公司 | Overhead sound barrier for rail transit |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106498862B (en) | 2019-01-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103437255B (en) | A kind of mountain area arterial highway " T "-intersection Design of Traffic Safety method | |
| CN102568218B (en) | Method for determining safe running speed on expressway under crosswind | |
| CN101774381B (en) | Crosswind hazard inhibition method of train and device thereof | |
| CN104029692A (en) | Railway container vehicle and chassis for same | |
| CN105405309A (en) | Expressway construction work zone vehicle speed control hierarchical early warning system | |
| CN106498862A (en) | A kind of strong wind atmosphere leeward area railway windbreak transition section structure | |
| CN103938559B (en) | Flow guiding type wind barrier | |
| CN203795329U (en) | Flow guide type wind barrier | |
| CN206194131U (en) | Crossing import way clearance system | |
| Williams | The next ETCS level? | |
| CN104099841B (en) | A kind of streamlined integration crossing of going slowly | |
| CN208279954U (en) | Can two way tramcar bicycle road structure | |
| CN111661071B (en) | Island type platform structure of subway station with crossing crossover and construction method | |
| CN201686950U (en) | Height-limited portal frame | |
| CN208789665U (en) | A kind of bus stop of traffic system for overhead track | |
| CN203700895U (en) | Combination structure of tramcar and elevated road | |
| CN107386135A (en) | A kind of strong wind atmosphere leeward area railway protection from the wind General Method for Optimization | |
| CN113536527B (en) | Algorithm considering influence of live load of multi-line travelling crane on external force of pier section | |
| CN209162532U (en) | A kind of speed per hour 120km/h metro depot test run line | |
| CN202416210U (en) | Road deceleration distribution skid-proof marking applicable to level crossing | |
| Stopka et al. | Proposal for optimizing the timetables within tram subsystem of urban public transport from the international conception | |
| CN207633192U (en) | The same laminar combined bridge travelled in the same direction | |
| CN207469115U (en) | A kind of wind barrier for bridge tunnel changeover portion | |
| CN205223749U (en) | Simple turnout and 7 number simple turnout , No. 8 simple turnout , No. 9 simple turnout thereof | |
| CN109183523B (en) | Test line for subway vehicle section with speed per hour of 120km/h |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |