CN107740356B - Applied to the removable air partition design method on Loads of Long-span Bridges with vehicle synchronous - Google Patents
Applied to the removable air partition design method on Loads of Long-span Bridges with vehicle synchronous Download PDFInfo
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- CN107740356B CN107740356B CN201710880421.1A CN201710880421A CN107740356B CN 107740356 B CN107740356 B CN 107740356B CN 201710880421 A CN201710880421 A CN 201710880421A CN 107740356 B CN107740356 B CN 107740356B
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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
- E01F8/00—Arrangements for absorbing or reflecting air-transmitted noise from road or railway traffic
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V20/00—Scenes; Scene-specific elements
- G06V20/50—Context or environment of the image
- G06V20/56—Context or environment of the image exterior to a vehicle by using sensors mounted on the vehicle
- G06V20/58—Recognition of moving objects or obstacles, e.g. vehicles or pedestrians; Recognition of traffic objects, e.g. traffic signs, traffic lights or roads
- G06V20/584—Recognition of moving objects or obstacles, e.g. vehicles or pedestrians; Recognition of traffic objects, e.g. traffic signs, traffic lights or roads of vehicle lights or traffic lights
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V2201/00—Indexing scheme relating to image or video recognition or understanding
- G06V2201/08—Detecting or categorising vehicles
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- Structural Engineering (AREA)
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- Theoretical Computer Science (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
A kind of Novel moveable air partition design method applied on Loads of Long-span Bridges with vehicle synchronous, including air partition main body, sliding rail and power device.The power device includes the system for tracking and dynamical system of mobile air partition.The system for tracking utilizes video identification technology, passes through the installation camera realization in the support construction of mobile air partition；The position of mobile air partition and camera is respectively positioned on the two sides of bridge, realizes identifying and positioning for vehicle using the wheel for capturing vehicle.The dynamical system realizes the movement of entire mobile air partition by the idler wheel of driving power device using electric motor as energy source；Solar panels are posted in the air partition plate part of mobile air partition, are power electric motors, can store electric energy when mobile air partition is idle；Dynamical system can control the power output of itself by the vehicle relative position information that system for tracking is fed back, and be adjusted to movement velocity, and realization is moved with by protection vehicle synchronous.
Description
Technical field
The invention belongs to Design of Traffic Safety technical fields, and in particular to one kind be applied to Loads of Long-span Bridges on can on bridge
The removable air partition that driving vehicle moves synchronously.
Background technique
Since China is vast in territory, climate variability, traffic safety is by a variety of inside even from weather.Wherein mountain pass, bealock, height
The influence of the generally existing strong black holes of the sections such as roadbed bend, Longspan Bridge.Wind in natural environment is to influence the traffic such as automobile
One important extraneous factor of tool riding stability and safety.For the vehicles, main hazard is effect of Side Wind.?
The multiple coastal cities of typhoon, the report for having crosswind that vehicle is caused to topple every year, and the phenomenon is particularly acute on bridge.Side
Wind has a great impact for the stability of vehicle, because will generate power of toppling when wind-force is more than certain numerical value, leads to vehicle
It topples or slides, lead to traffic accident, cause very big security risk.Therefore improve crosswind to traffic safety
Influence be very it is necessary to.
When meeting with typhoon, government selects enclosed bridge often to ensure the safety of bridge and vehicle.This political affairs
Although plan ensure that the safety of vehicle, but but also two regions of bridge connection form isolation.By taking Xiamen as an example, stepped in typhoon
Lu Shi, if completely enclosed bridge, will cut off the connection on Xiamen main island and hinterland, make the main island in Xiamen be isolated from the outside, tall building
The indispensable living material on the island Men Zhu is difficult to normal transport, and the material stock on main island can not meet isolation in more days.Therefore how
Make bridge normal pass when typhoon, guarantees the necessary transportation function in basis just at problem to be solved.
It is very effective one of measure in the multiple area's setting protection from the wind of crosswind, air partition especially is set in bridge spanning the sea
It is very common.There is more achievement in the research of Wind-resistance of Bridges, to discussions such as the forms, height, porosity of bridge air partition
It is more.Traditional bridge air partition is divided into continuous air partition and local two kinds of air partition, although continuous air partition comparison is effective, sexual valence compares
It is low, relatively guard；Although and local air partition can guarantee driving safety in most cases, encountering accidental effect of Side Wind
When it is difficult to ensure that its function performance, reliability is relatively low.Traditional most important problem of air partition further includes that installation is built and later period dimension
Protect more complicated, while problem the most serious is, the installation of air partition can additionally increase very big to bridge (especially suspension bridge)
Cross force load face bigger safety and economic hidden danger so that the failure probability of bridge greatly improves.
In previous research, it is less to be related to moveable local air partition safety devices.It is moveable applied to Loads of Long-span Bridges
Novel air partition has high performance-price ratio, high-reliability, and the additional lateral load generated to bridge is small, is an existing practical valence
Value has far-reaching invention research again.
Summary of the invention
Present invention aims to overcome that the prior art is insufficient, disclose it is a kind of applied on Loads of Long-span Bridges with vehicle synchronous can
Mobile air partition design method.
Technical solution characterization are as follows:
A kind of removable air partition design method applied on Loads of Long-span Bridges with vehicle synchronous, which is characterized in that entirely may be used
Air partition system is moved by air partition main body, sliding rail and power device three parts group, wherein
The air partition main body includes air partition plate, support construction, idler wheel, is supported by support construction, the support construction bottom
Portion is provided with idler wheel, and the idler wheel is directly contacted with the sliding rail, is bolted between the air partition plate and support construction；
The sliding rail is the carrier of mobile air partition movement, and installation site is the inside of the closely outermost side rail of bridge, in bridge
There are installation in the two sides of beam, and installation length is a part of entire bridge floor part and both ends access bridge section；Sliding rail is with grooving or anchor
Solid form be fixed on bridge floor；
Power device can be fitted closely by idler wheel with sliding rail, and the two is set in support construction；
The power device includes the system for tracking and dynamical system of mobile air partition；
The system for tracking utilizes video identification technology, passes through the installation camera reality in the support construction of mobile air partition
It is existing；The position of mobile air partition and camera is respectively positioned on the two sides of bridge, and camera can recorde the silhouette of vehicle driving, adopt
Identifying and positioning for vehicle is realized with the wheel for capturing vehicle；The work of system is divided into two stages, model training stage and
Target detection cognitive phase；The model training stage, the processing to history video, needs to collect and establish the target of tape label
Data acquisition system, and pick out suitable sample and carry out deep learning model training, be finally reached convergence and obtain it is good accurate
Rate；
The target detection cognitive phase is the processing to real time video image, completes key frame of video using frame difference method
After extraction, using trained deep learning model, detection and identification to wheel are completed, finally obtains vehicle and mobile air partition
Relative position, relative positional relationship information is fed back into central processing unit, central processing unit by logic judgment, by adjusting
The power supply volume of power supply controls the acceleration and deceleration of mobile air partition system so as to adjust dynamical system, moves air partition and vehicle synchronous；
The dynamical system realizes entire move using electric motor as energy source, by the idler wheel of driving power device
The movement of dynamic air partition；Solar panels are posted in the air partition plate part of mobile air partition, and solar energy can be absorbed and be converted into electric energy, are electronic
Motor power supply, meanwhile, there is battery in support construction, can be stored electric energy when mobile air partition is idle；Power
System can control the power output of itself by the vehicle relative position information that system for tracking is fed back, and adjust to movement velocity
Whole, realization is moved with by protection vehicle synchronous.
Most crucial problem relevant to air partition is wind load, and the stability of vehicle is very sensitive to wind direction, in the present invention
Design phase, design wind direction are orthogonal with bridge span direction.Bridge model selection on, the embodiment of the present invention selected greatly across
Relatively common suspension bridge is as invention design object in bridge.In the contact track design aspect of mobile air partition, embodiment with
The orbit form of train railway is as design reference, the final track using sliding rail as mobile air partition movement.Using can be applicable in
In power source of the trolley as mobile air partition of sliding rail, mobile air partition is fixed on trolley, air partition is driven to move along sliding rail.It moves
Dynamic air partition dynamical system uses video identification technology, identifies driving vehicle, and according to the variation of identified car speed, adjusts certainly
Body speed carries out real-time tracking to vehicle, ensures the traffic safety of haulage vehicle under extreme weather.
Mobile air partition adjusts self power system using video identification technology, accomplishes to carry out for mobile vehicle real-time
Tracking ensures the driving safety of important transportation vehicle in extreme weather, has high performance-price ratio, high-reliability.Its wind resistance area is small,
Increased wind area is smaller for bed rearrangement bridge, and to bridge, additionally increased lateral load is small, thus relative to common
Full-bridge air partition improve certain safety coefficient so that bridge itself is safer under extreme weather.Higher safety system
Number so that under same safety standard, the construction of bridge and require not having to material it is excessively high, to reduce cost.
Detailed description of the invention
Fig. 1, air partition main body schematic diagram
Fig. 2, sliding rail cross-sectional view
Fig. 3, mobile air partition schematic diagram (side view, front view)
Fig. 4, mobile air partition sliding rail schematic view of the mounting position (elevation, top view)
Fig. 5, system structure relation schematic diagram
Fig. 6, video recognition system logic relation picture
In figure:
1, air partition support frame
2, air partition plate
3, mobile air partition video identification and power device
4, mobile air partition pulley
5, sliding rail
6, skewback
7, bank line
8, pavement
Specific embodiment
It elaborates below in conjunction with drawings and examples to technical solution of the present invention.
Embodiment 1
Entirely removable air partition system is made of air partition main body, sliding rail and power device three parts.
1, air partition main body
In order to realize influence of the reduction crosswind to Loads of Long-span Bridges traffic safety, in design hole wind deflector or anti-parabolic fence
When, need to configure the size of air partition porosity.The size of air partition porosity directly determines the size of air partition effect, according to simulation
Experimental analysis controls the porosity of air partition in Fig. 1 30% -50%, and at this moment air partition can not only effectively reduce the wind speed of bridge floor,
The decline of the mutation of wind speed and stability on the outside of bridge tower can also be reduced.
Consider the body dimensions of mass transit vehicle, the height of entire mobile air partition should be in 3.0m or so, and length 15m is left
The right side can be very good protection mass transit vehicle.Air partition is moved by sliding rail, and each mobile air partition is by 4 support constructions
It supports (as shown in Figure 3), is bolted, is easy for installation and removal between air partition plate and support construction.
2, sliding rail
Sliding rail is C-shaped channel steel, and cross-section surface chamfer is right angle, and has certain thickness, so as to reach to wind load resistance
Intensity.Power device in support construction can be fitted closely with sliding rail, be supplied to power device idler wheel frictional force and realized fortune
It is dynamic, while the reaction force of wind load is provided for entire air partition system.
Sliding rail is the carrier of mobile air partition movement, and installation site is the inside of the closely outermost side rail of bridge, in bridge
There are installation in two sides, and installation length is a part (as shown in Figure 4) of entire bridge floor part and both ends access bridge section.Sliding rail is to dig
Slot or the form of anchoring are fixed on bridge floor.
3, power device
There are the dynamical system and system for tracking of mobile air partition in support construction.
3.1 system for tracking
System for tracking utilizes video identification technology, passes through the installation camera realization in the support construction of mobile air partition.It moves
The position of dynamic air partition and camera is respectively positioned on the two sides of bridge, and camera can recorde the silhouette of vehicle driving.Consider vehicle
It is more with bridge foundation facility image rectilinear strip, it is not easy identification and distinguishes, so using the wheel for capturing vehicle, Lai Shixian vehicle
Identify and position.The input of identifying system is video, and output is the relative position for identifying target.
The work of system is divided into two stages, model training stage and target detection cognitive phase.
Model training stage, the mainly processing to history video, need to collect and establish the target data set of tape label
It closes, and picks out suitable sample and carry out deep learning model training, be finally reached convergence and obtain good accuracy rate.
Target detection cognitive phase is mainly the processing to real time video image, completes key frame of video using frame difference method
After extraction, using trained deep learning model, detection and identification to wheel are completed, finally obtains vehicle and mobile air partition
Relative position.Relative positional relationship information will be feedbacked to central processing unit, and central processing unit passes through logic judgment, by adjusting
The power supply volume of power supply controls the acceleration and deceleration of mobile air partition system so as to adjust dynamical system, moves air partition and vehicle synchronous.
To reach the traffic safety for protecting necessary haulage vehicle under extreme weather conditions.
3.2 dynamical system
Dynamical system realizes entire mobile wind using electric motor as energy source, by the idler wheel of driving power device
The movement of barrier.Solar panels are posted in the air partition plate part of mobile air partition, and solar energy can be absorbed and be converted into electric energy, are electric motor
Power supply, meanwhile, there is battery in support construction, can be stored electric energy when mobile air partition is idle.Dynamical system
The power output that itself can be controlled by the vehicle relative position information that system for tracking is fed back, is adjusted movement velocity,
Realization is moved with by protection vehicle synchronous.
To sum up, move air partition system is realized under extreme crosswind weather by air partition main body, sliding rail and power device,
While support vehicles traffic safety, the drawbacks of traditional air partition increases excessive extra load to bridge is also evaded significantly, simultaneously
Also reduce the construction cost of traffic safety facilities.
Claims (1)
1. being applied to the removable air partition design method on Loads of Long-span Bridges with vehicle synchronous, which is characterized in that entirely move wind
Barrier system by air partition main body, sliding rail and power device three parts group, wherein
The air partition main body includes air partition plate, support construction, idler wheel, is supported by support construction, and the support construction bottom is set
It is equipped with idler wheel, the idler wheel is directly contacted with the sliding rail, is bolted between the air partition plate and support construction；
The sliding rail is the carrier of mobile air partition movement, and installation site is the inside of the closely outermost side rail of bridge, in bridge
There are installation in two sides, and installation length is a part of entire bridge floor part and both ends access bridge section；Sliding rail is with grooving or anchoring
Form is fixed on bridge floor；
Power device can be fitted closely by idler wheel with sliding rail, and the two is set in support construction；
The power device includes the system for tracking and dynamical system of mobile air partition；
The system for tracking utilizes video identification technology, passes through the installation camera realization in the support construction of mobile air partition；It moves
The position of dynamic air partition and camera is respectively positioned on the two sides of bridge, and camera can recorde the silhouette of vehicle driving, using catching
The wheel of vehicle is caught to realize identifying and positioning for vehicle；The work of system is divided into two stages, model training stage and target
Detect cognitive phase；The model training stage, the processing to history video, needs to collect and establish the target data of tape label
Set, and pick out suitable sample and carry out deep learning model training, it is finally reached convergence and obtains good accuracy rate；
The target detection cognitive phase is the processing to real time video image, and the extraction of key frame of video is completed using frame difference method
Afterwards, using trained deep learning model, detection and identification to wheel are completed, finally obtains the phase of vehicle with mobile air partition
To position, relative positional relationship information is fed back into central processing unit, central processing unit is by logic judgment, by adjusting power supply
Power supply volume control the acceleration and deceleration of mobile air partition system so as to adjust dynamical system, move air partition and vehicle synchronous；
The dynamical system realizes entire mobile wind using electric motor as energy source, by the idler wheel of driving power device
The movement of barrier；Solar panels are posted in the air partition plate part of mobile air partition, and solar energy can be absorbed and be converted into electric energy, are electric motor
Power supply, meanwhile, there is battery in support construction, can be stored electric energy when mobile air partition is idle；Dynamical system
The power output that itself can be controlled by the vehicle relative position information that system for tracking is fed back, is adjusted movement velocity,
Realization is moved with by protection vehicle synchronous.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710880421.1A CN107740356B (en) | 2017-09-26 | 2017-09-26 | Applied to the removable air partition design method on Loads of Long-span Bridges with vehicle synchronous |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710880421.1A CN107740356B (en) | 2017-09-26 | 2017-09-26 | Applied to the removable air partition design method on Loads of Long-span Bridges with vehicle synchronous |
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| Publication Number | Publication Date |
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| CN107740356A CN107740356A (en) | 2018-02-27 |
| CN107740356B true CN107740356B (en) | 2019-08-06 |
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| CN113005934B (en) * | 2021-03-10 | 2022-04-19 | 重庆交通职业学院 | Closed urban rail sound barrier |
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| US7036798B1 (en) * | 2002-04-30 | 2006-05-02 | Olson Michael A | Mobile barrier to control litter and wind |
| CN101864740A (en) * | 2009-12-02 | 2010-10-20 | 中交公路规划设计院有限公司 | Movable windbreak for bridge |
| CN104018439A (en) * | 2014-06-23 | 2014-09-03 | 中南大学 | Windshield for road traffic |
| KR20150119600A (en) * | 2014-04-16 | 2015-10-26 | 신범휴 | Protection wall with convertible wind protection panel using solar power |
| CN106337374A (en) * | 2016-09-27 | 2017-01-18 | 谢晓红 | Wind shield for highway bridge |
| CN106907055A (en) * | 2017-02-22 | 2017-06-30 | 天津大学 | A kind of dust suppression anti-wind net for realizing self adaptation wind direction adjustment |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017044566A1 (en) * | 2015-09-11 | 2017-03-16 | Alion Energy, Inc. | Wind screens for photovoltaic arrays and methods thereof |
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- 2017-09-26 CN CN201710880421.1A patent/CN107740356B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7036798B1 (en) * | 2002-04-30 | 2006-05-02 | Olson Michael A | Mobile barrier to control litter and wind |
| CN101864740A (en) * | 2009-12-02 | 2010-10-20 | 中交公路规划设计院有限公司 | Movable windbreak for bridge |
| KR20150119600A (en) * | 2014-04-16 | 2015-10-26 | 신범휴 | Protection wall with convertible wind protection panel using solar power |
| CN104018439A (en) * | 2014-06-23 | 2014-09-03 | 中南大学 | Windshield for road traffic |
| CN106337374A (en) * | 2016-09-27 | 2017-01-18 | 谢晓红 | Wind shield for highway bridge |
| CN106907055A (en) * | 2017-02-22 | 2017-06-30 | 天津大学 | A kind of dust suppression anti-wind net for realizing self adaptation wind direction adjustment |
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| CN107740356A (en) | 2018-02-27 |
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