CN101122120A - Highway steel plate guardrail end decomposable shield protecting device - Google Patents
Highway steel plate guardrail end decomposable shield protecting device Download PDFInfo
- Publication number
- CN101122120A CN101122120A CNA2007102018283A CN200710201828A CN101122120A CN 101122120 A CN101122120 A CN 101122120A CN A2007102018283 A CNA2007102018283 A CN A2007102018283A CN 200710201828 A CN200710201828 A CN 200710201828A CN 101122120 A CN101122120 A CN 101122120A
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- guardrail
- steel plate
- column
- decomposable
- nested
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Abstract
The invention discloses a protective device for a dismountable shield at the end of a steel guard fence on the road. The protective device is connected with the end of the guard fence; the guard fence consists of a guard fence plate and a vertical post which are connected together; a padding block is arranged between the guard fence plate and the vertical post; the device is covered on the end of the guard fence plate; the front side of the vehicle coming direction is provided with a protective shield panel, the back of which is connected with a slide nesting; the slide nesting is covered on the guard fence plate like a booth with the opening before the toes, with sharp tail edge, the inner wall on one side of the head opening of which is provided with a stream line slide way; the slide nesting is provided with a laterally protruding push block on the same side with the vertical post; the guard fence plate on the same side with the push block is connected with a shear bolt; a steel cable is connected between the vertical post behind the push block and the shear bolt. When impacted on the front side, the invention can prevent the dangerous guard fence end from being inserted into the vehicle and harming passengers in the vehicle, and meanwhile, protect the driver and the passengers against too heavy impaction harm.
Description
(1) technical field
The present invention relates to a kind of protector of highway traffic safety, the particularly steel plate guardrail end energy dissipating safety device that can disintegrate.
(2) background technology
The World Health Organization's result of study in 2004 shows, road traffic accident is much more serious than railway, air crash, the death toll that causes is far more than war, about 1,200,000 people of annual road traffic death toll, cause wounded or disabled about 5,000 ten thousand people, the economic loss that causes accounts for 1% to 3% of various countries G D P.For this reason, national governments are invariably preventing and reducing traffic accident as important target in power.In China, along with the develop rapidly of highway construction and the arrival of automotive society, traffic safety also becomes the subject under discussion that government and street levels is concerned about day by day.It is global 2% that China's automobile pollution accounts for, but that road fatalities accounts for is global 10%, high for many years ranking first in the world.In recent years, death toll surpasses 100,000 people for several years running, average every day dead 3
00 people is equivalent to have every day an airline carriers of passengers accident.Security incident has caused heavy losses to people's lives and properties, has brought huge grief for injures and deaths person family members, and also to China's socio-economic development, highway foundation Facilities Construction and international fame cause very big negative effect.Calculate if account for 1% the lowest mode of GDP by the loss of developing country road traffic accident, China's GDP total amount is about 20 trillion yuan, and annual road traffic accident economic loss is about 2,000 hundred million yuan." highway safety guarantee " engineering that Ministry of Communications implemented to be the theme with " removing a hidden danger, value life " at national state provincial trunk highway since 2003, transform in, trackside strategically located and difficult of access highway section bad to the sharp turn in state's provincial trunk highway, abrupt slope, sighting distance, by setting up steel or concrete anticollision barrier, set up sign board, security protection facilities such as highway alignment induction sign are set, improve the safety of highway driving.Simultaneously, some new design concepts and facility are also proposed successively.
As everyone knows, all be provided with a large amount of steel guardrails on speedway or other standard highway, generally, the related steel formula column that can not surrender and rupture in hard termination and end without safe handling that it is lofty is breakneck for vehicular traffic.When pavement behavior bad, the errant vehicle that sleety weather road cunning causes, the burst emergency is carried out vehicle and is dodged, or sail into when trackside is unfortunate to bump against these dangerous steel guardrail terminations because of driver driving is tired, hard guardrail termination can directly be thrust car body and be caused Che Neisi to drive personnel's injures and deaths, in addition, the related steel formula column that can not surrender He can not rupture in end can make the collision vehicle topple, and causes casualties and the vehicle property loss.So, consider that the Safety Design and the treating apparatus of highway steel plate guardrail end become the task of top priority of " highway safety guarantee " engineering.
(3) summary of the invention
The objective of the invention is to propose a kind of new highway steel plate guardrail end decomposable shield protector, when the solution errant vehicle hits steel plate guardrail end, the steel guardrail termination of the danger that it is lofty and guardrail insert the compartment, and a series of columns of guardrail end are indivisible and cause vehicle to topple and human body bears too large impact power and causes occupant injury or deadly serious device problem.Briefly, the present invention mainly solves two problems: the one, solve the problem that the compartment is easily inserted in the steel guardrail termination, and the 2nd, solve the disintegration Dissipation of Energy of steel plate guardrail end column under predetermined strength.
Technical scheme of the present invention: this highway steel plate guardrail end decomposable shield protector, be connected with guardrail end, guardrail is formed by connecting by guardrail board 3 and column 4, cushion block 8 is arranged between guardrail board and column, it is characterized in that: this device is enclosed within the end of guardrail board 3, there is protection shield panel 1 in the front of its direction to the car, protection shield panel back fuses with slip nested 2, slide and nested 2 be enclosed within on the guardrail board 3, the boot of shape such as toe open front, its tail edge is sharp, its head opening one side inwall has streamlined slideway 10, slide and nested 2 be connected with the outstanding pushing block 6 of a side direction with the column homonymy, on the guardrail board 3 of pushing block homonymy, connect one and shear bolt 7, between the column 4 at pushing block rear and shearing bolt 7, be connected a cable wire 5.
Above-mentioned protection shield panel 1 is rectangle, circle, ellipse, trapezoidal, triangle or abnormity.
Traffic alarm sign pad pasting is arranged on the above-mentioned protection shield panel 1.
Above-mentioned protection shield panel 1 external margin has forwards, i.e. the projection burr 12 of direction to the car.
The material of above-mentioned pushing block 6 is steel, and the distance that the pushing block side direction is given prominence to is greater than the distance of guardrail board to column.
Above-mentioned pushing block 6 with slide nested 2 open-ended be left side opening or right openings.
The material of above-mentioned slip nested 2 is steel, and the nested mid portion that slides is an engraved structure.
Above-mentioned column 4 is a steel, and its cross section is I-shaped, king's font, hollow circle or rectangle.
Above-mentioned column 4 bottoms more than ground and/or below ground be distributed with through hole 9.
Above-mentioned column 4, guardrail board 3, the protection shield panel 1 and the nested antirust processing of all passing through of sliding, the surface is covered with antirust coat, skin of paint or coating antirust coat.
Operating principle of the present invention: for new highway can being disintegrated rapidly when being clashed into by errant vehicle with the steel plate guardrail end that can disintegrate and absorbing certain impact energy; and avoid its hard termination to thrust car body; thereby protection occupant's life security; must load onto the slip nested arrangement that front about one 100 centimetres to 200 centimetres has the shield function at the end portion cover; its shield collision contact area is wanted enough big and is ensured definite shape and quality; under Vehicular impact; this slip nested structure on steel guardrail, slide and guide steel guardrail in the left side or right side outlet skid off smoothly away from the car body direction to proceeds posterolateral; near the height and position of 0 to 20 centimetre on distance ground on the column in 5 meters to the 20 meters termination is disintegrated or surrender, to prevent that the ground residual fraction from tangling the vehicle bottom and causing overturning.This disintegration or yield strength depend on the factor of two aspects, the one, and the structure of column, material, shape, size, number, buried depth and mounting means; The 2nd, the manufacturing materials of column and processing technology.On the other hand, when considering that column can be separated bulk properties, also must take into account the allomeric function requirement of steel guardrail, guarantee to possess under the collision in the side direction 20 degree angles fundamental strength and the rigidity of steel guardrail, corrosion resistance is installed, convenience and outward appearance and the saving material etc. safeguarding and replace.
For the purpose of simple declaration, regard errant vehicle as particle that quality is m, the speed before the bump steel plate guardrail end is v
1, the speed after bump guardrail end first root post is v
2, then vehicle is t in action time
1Knockout process in, the impact F that is subjected to
1For
F
1＝m(v
1v
2)/t
1(1)
According to kinetic energy conservation, principle of conservation of momentum and variable accelerated motion formula:
S
1＝mv
1 2/2-mv
2 2/2(2)
Sever or lodge crookedly no matter suppose steel plate guardrail end, t action time of bump is similar, because m and v
1The impact F identical, that errant vehicle is subjected to
1Just depend primarily on v
2Steel plate guardrail end first root post is severed by hot-short under the situation of surrender, and vehicle also may move on, promptly with dump energy and residual velocity v
2＞0 hits second, the 3rd fence upright, hits to the N root post with the acceleration that meets human body safety until vehicle to stop dump energy and the speed v of this moment
nBe zero.
Action principle and formula of reduction after clashing into for N time:
F
n＝m(v
n-v
n+1)/t
n (3)
According to kinetic energy conservation, principle of conservation of momentum and variable accelerated motion formula, the vehicle energy attenuation can be used following equation expression:
△S
1＝mv
1 2/2-mv
2 2/2…-mv
n n/2(4)
In sum, the shape and the area of end collision protection shield panel, and first key component that becomes design to the column yield strength or the shear strength of N root, and yield strength or shear strength are directly and directed force F
1To F
nRelevant.If the fracture of steel plate guardrail end column or yield strength or ballistic work are low excessively, promptly be easy to be severed or surrender, then sever or surrender the back vehicle and still can keep very high speed v
2, danger also will occur in bump next time, and in other words, steel plate guardrail end does not play good energy dissipating effect in this case; Otherwise, if the breaking strength of steel plate guardrail end column or yield strength are excessive, be difficult for being severed or energy excessive in the energy loss of this point, the deceleration in the collision process can cause the occupant to come to harm, and is also improper.From the angle of acceleration, the occupant generally can bear and be not more than 20 G (=9.8 meter per seconds
2) acceleration of gravity.Suppose generally speaking, although stepped on brake, v
1Still can reach the 27-33 meter per second,, work as v if be 0.2 second action time
2=0 o'clock, the occupant just may bear up to the acceleration more than up to a hundred the G, and hit wall and was as good as.If by severing the steel plate guardrail end column one by one, then acceleration just can be reduced to safe scope.
The present invention is from people-oriented; the theory of life first is set out; this steel plate guardrail end safety device and equipment are suitable for each standard highway and bridge; all steel plate guardrail ends all should be designed to separate body structure and have predefined just right fracture or yield strength; when errant vehicle and steel plate guardrail end bump; the present invention can separate the impact energy that body structure can be subdued the collision vehicle step by step; make the collision vehicle underspeed suitably and stop safely; simultaneously; the end portion steel guardrail skids off and the proceeds posterolateral that leads is thrust in the car to avoid the termination, thereby plays driving staff's life and the effect that reduces the vehicle property loss in the protection car.
(4) description of drawings
The present invention will be further described in detail below in conjunction with accompanying drawing.
Fig. 1 is a plan structure schematic diagram of the present invention.
Fig. 2 is a side-looking structural representation of the present invention.
Fig. 3 is the schematic diagram of shield shape protection shield panel.
Fig. 4 is the schematic diagram of rectangle protection shield panel.
Fig. 5 is the schematic diagram of oval protection shield panel.
Fig. 6 is the schematic diagram of triangle protection shield panel.
Fig. 7 is the schematic diagram of trapezoidal protection shield panel.
Fig. 8 is the schematic diagram of square tube shape cross section column.
Fig. 9 is the schematic diagram of tubular cross section column.
Figure 10 is the schematic diagram of king's font cross section column.
Figure 11 is the schematic diagram of I-shaped cross section column.
Figure 12 is the schematic diagram of column underpunch.
Figure 13 is the plan structure schematic diagram of the present invention when disintegrating.
Figure 14 is the side-looking structural representation of the present invention when disintegrating.
That Reference numeral: 1-protection shield panel, 2-slide is nested, 3-guardrail board, 4-column, 5-cable wire, 6-pushing block, 7-are sheared bolt, 8-cushion block, 9-through hole, 10-streamlined slideway, 11-ground, 12-projection burr.
(5) specific embodiment
Referring to Fig. 1,2,13,14, the scheme that this new highway steel plate guardrail end protective equipment of the present invention adopts steel protection shield panel to contact with collision vehicle generating plane, under the positive effect of impact of automotive, protection shield panel contacts with car body, be enclosed within nested the sliding backward of slip of guardrail end, derive with the guardrail tip bend of danger and from the outlet of sliding nested, avoid the guardrail termination directly to thrust the compartment; Simultaneously, under the car body percussion, a series of columns are one by one in regular turn in surrender of suspension column position or disintegration near the steel plate guardrail end, can drive fence upright surrender disintegration and absorb certain impact energy, subdue vehicle energy step by step, the vehicles can suitably be slowed down and stop, and driver and passenger are unlikely to bear excessive injury thereby make.
Embodiments of the invention propose the shape of the following steel plate guardrail end that disintegrates, structure, size and installation design.
Fig. 1,2 is the steel plate guardrail end overall construction design schematic diagram that can disintegrate, and total length is about 5 meters to 20 meters, mainly is made up of five parts: protection shield panel 1, slip are nested 2, guardrail board 3, column 4 and cable wire 5.
The protection shield panel 1 of first should be antirust steel panel, and protection shield panel front has black yellow alternate traffic alarm and identifies reflective pad pasting.Referring to Fig. 3-7, protection shield panel-shaped can be shield type, rectangle, square, circle, ellipse, triangle or trapezoidal, the surface is covered with antirust coat, skin of paint or coating antirust coat, and protection shield panel external margin has forward the projection of (direction to the car).The steel panel width is 30～60 centimetres, highly is 40～100 centimetres, and thickness is 0.5～5 centimetre.Protection shield face plate edge should be to antecurvature and goes out the projection burr 12 that (direction to the car) is about 1～5 centimetre, its effect is when vehicle contacts with the panel collision, the projection burr can embed the car bumper plate so that retrain and control the collision application point and the direct of travel of vehicle better, prevent to jump on application point sideslip and the car body.Rectangle shield shape protection shield panel should possess enough bulk strengths, and remarkable distortion, cracked and disintegration do not take place under the positive high speed impact of the vehicle that has huge energy.
The slip of second portion nested 2 is referring to Fig. 1,2, the nested steel plate guardrail end that is enclosed within slides, join together by welding with protection shield panel, can slide backward along guardrail under effect of impact, remarkable distortion, cracked and disintegration do not take place in its bulk strength under the positive high speed impact of the vehicle that has huge energy.The slide boot of nested shape such as toe open front, entire length is 100 centimetres to 150 centimetres, bigger 1 to 5 centimetre of width and aspect ratio general steel plate guardrail width and height dimension, so as steel plate guardrail end can be inserted swimmingly slide nested.The nested head inwall that slides should be made the smooth inner wall that relaxes curved surface shaped in the open end internal structure, it is streamlined slideway 10, the nested head lateral openings of sliding, the outlet of streamlined slideway 10 can be the left side opening, also can be right openings, the design of opening direction depend on guardrail end on road the position and to closing on the influence of track and peripheral facilities.Sliding nested opening size should be bigger than general steel plate guardrail, and width is 10 to 20 centimetres, highly is 35 to 50 centimetres.Under effect of impact, but the linear slideway 10 of guardrail board 3 longshore currents of embedding from outlet smooth and easy skidding off in proceeds posterolateral miter angle to 90 degree is interval, the guardrail end of avoiding skidding off thrusts car body.Slide nested 2 being connected with the outstanding pushing block 6 of a side direction, on the guardrail board 3 of pushing block homonymy, connect one and shear bolt 7, between the column 4 at pushing block rear and shearing bolt 7, be connected a cable wire 5 with the column homonymy.Above-mentioned pushing block can be positioned at the nested middle part, head rear of sliding, it can be arc triangular shape tabula steel pushing block parallel to the ground, the distance that the pushing block side direction is given prominence to is greater than the distance of guardrail board to column, the thickness of pushing block is 1 to 3 centimetre, and distance is 10 to 20 centimetres between first root post, its effect is that this arc triangular shape tabula steel pushing block just in time acts on the top of fence upright, and column 4 is rearward surrendered when being nested in Vehicular impact lower edge steel guardrail to front slide when sliding.Under effect of impact, pushing block moves backward, bump column top, and column is surrendered in the bottom.The nested afterbody outer rim of sliding should be knife edge shape, be beneficial to slide and be nested in when sliding backward under the effect of impact, can weak the connection shear Luo bolt 7 and cable wire 5 along what guardrail cut nonfloating rail plate 3 and 4 on column smoothly, thereby guardrail board 3 be entered smoothly slide nested from the entrance.For economical with materials be convenient to install, nested 2 the middle part of sliding can be engraved structure.
Third part guardrail board 3 is common wave mode steel guardrail.
The cable wire 5 of the 5th part be used to be connected steel guardrail, the nested and column that slides are that diameter is the flexible cable wire of 1 centimetre to 3 centimetres regular tenacity.For preventing that the whole mechanism of action is affected, first root post of steel plate guardrail end does not have fixed the connection with guardrail board with slip is nested, second root post only ties by anti-shearing very weak shearing Luo with guardrail board and connects, therefore slide nested and guardrail end at gravity, the vibrations of wind-force and vehicular traffic easily break away from column down or deform, and then change overall structure performance.For avoiding this situation to take place, adopt flexible cable wire that the guardrail board and first root post are connect, cable wire one end is fixed by Luo bolt and column bottom, the cable wire other end is fixed with guardrail board by shearing Luo bolt 7, shearing the Luo bolt will be beyond 30 centimetres of the nested tail end entrance of sliding in the position on the guardrail board, with avoid sliding arc triangular shape tabula steel pushing block before bump first root post in advance bump shear the Luo bolt and contract after making guardrail board but not skid off to the forward position nested inwall that slides.
Be economical with materials and cost, use material, making and the processing technology of, guardrail board 3 nested 2 and column 4, telescopic cable wire 5 to the slip of the protection shield panel 1 of steel plate guardrail end, guardrail, the present invention proposes following requirement:
1, protection shield panel 1 nested 2 should be selected high-strength metal material with sliding, and preferably adopts the rolling processing and fabricating of sheet material to be welded into integral body then, rollingly can determine according to shield shape of cross section and size with mould.Positive mask can adopt traffic light reflecting membrane commonly used by the processing of shield shape and size, and color is got black yellow alternate means of transportation alarming sign.
2, guardrail board 3 adopts common guardrail common metal material and processing technology.
3, column 4 adopts wooden or common fence upright common metal material and processing technology, and through hole 9 adopts punching press or bore mode processing, and used drift is determined according to the aperture.
4, cable wire 5 adopts common cable wire.
5, all metal material should be handled through the conventional Rustproofing apparatus of plating zinc on surface.
The present invention proposes this new steel plate guardrail end design, comprises material therefor, shape, structure, key dimension, producing device, processing technology and mounting means etc.
Claims (10)
1. highway steel plate guardrail end decomposable shield protector, be connected with guardrail end, guardrail is formed by connecting by guardrail board (3) and column (4), cushion block (8) is arranged between guardrail board and column, it is characterized in that: this device is enclosed within the end of guardrail board (3), there is protection shield panel (1) in the front of its direction to the car, protection shield panel back fuses with slide nested (2), slide nested (2) be enclosed within on the guardrail board (3), the boot of shape such as toe open front, its tail edge is sharp, its head opening one side inwall has streamlined slideway (10), slide nested (2) be connected with the outstanding pushing block (6) of a side direction with the column homonymy, go up in the guardrail board (3) of pushing block homonymy and to connect one and shear bolt (7), between the column (4) at pushing block rear and shearing bolt (7), be connected a cable wire (5).
2. highway steel plate guardrail end decomposable shield protector according to claim 1 is characterized in that: above-mentioned protection shield panel (1) is rectangle, circle, ellipse, trapezoidal, triangle or abnormity.
3. highway steel plate guardrail end decomposable shield protector according to claim 1 and 2 is characterized in that: traffic alarm sign pad pasting is arranged on the above-mentioned protection shield panel (1).
4. highway steel plate guardrail end decomposable shield protector according to claim 3 is characterized in that: above-mentioned protection shield panel (1) external margin has forwards, i.e. the projection burr (12) of direction to the car.
5. highway steel plate guardrail end decomposable shield protector according to claim 1 and 2 is characterized in that: the material of above-mentioned pushing block (6) is steel, and the distance that the pushing block side direction is given prominence to is greater than the distance of guardrail board to column.
6. highway steel plate guardrail end decomposable shield protector according to claim 1 and 2 is characterized in that: above-mentioned pushing block (6) is open-ended with slide nested (2) to be left side opening or right openings.
7. highway steel plate guardrail end decomposable shield protector according to claim 1 and 2 is characterized in that: the material of above-mentioned slip nested (2) is steel, and the nested mid portion that slides is an engraved structure.
8. highway steel plate guardrail end decomposable shield protector according to claim 1 and 2 is characterized in that: above-mentioned column (4) is a steel, and its cross section is I-shaped, king's font, hollow circle or rectangle.
9. highway steel plate guardrail end decomposable shield protector according to claim 8 is characterized in that: above-mentioned column (4) bottom more than ground and/or below ground be distributed with through hole (9).
10. highway steel plate guardrail end decomposable shield protector according to claim 9, it is characterized in that: above-mentioned column (4), guardrail board (3), protection shield panel (1) and the nested antirust processing of all passing through of sliding, the surface is covered with antirust coat, skin of paint or coating antirust coat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007102018283A CN101122120A (en) | 2007-09-24 | 2007-09-24 | Highway steel plate guardrail end decomposable shield protecting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007102018283A CN101122120A (en) | 2007-09-24 | 2007-09-24 | Highway steel plate guardrail end decomposable shield protecting device |
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| Publication Number | Publication Date |
|---|---|
| CN101122120A true CN101122120A (en) | 2008-02-13 |
Family
ID=39084603
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007102018283A Pending CN101122120A (en) | 2007-09-24 | 2007-09-24 | Highway steel plate guardrail end decomposable shield protecting device |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103526705A (en) * | 2008-05-05 | 2014-01-22 | 得克萨斯A&M大学系统 | Guardrail safety system for dissipating energy to decelerate the impacting vehicle |
| CN109213170A (en) * | 2018-09-20 | 2019-01-15 | 杭州纳戒科技有限公司 | Shopping mechanism of car and shopping cart system |
| CN109653134A (en) * | 2019-02-02 | 2019-04-19 | 山东交通学院 | A kind of anticollision barrier |
| CN110382779A (en) * | 2017-03-08 | 2019-10-25 | 业纳遥控设备有限公司 | Traffic monitoring component |
| CN112195773A (en) * | 2020-10-30 | 2021-01-08 | 福州大学 | Longitudinal connecting device suitable for leading plate expansion joint and construction method |
| CN113216050A (en) * | 2021-05-29 | 2021-08-06 | 中国海洋大学 | Method for improving upright post of highway guardrail |
-
2007
- 2007-09-24 CN CNA2007102018283A patent/CN101122120A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103526705A (en) * | 2008-05-05 | 2014-01-22 | 得克萨斯A&M大学系统 | Guardrail safety system for dissipating energy to decelerate the impacting vehicle |
| CN103526705B (en) * | 2008-05-05 | 2016-01-06 | 得克萨斯A&M大学系统 | For dissipation energy with the guardrail safety system making vehicle impact slow down |
| CN110382779A (en) * | 2017-03-08 | 2019-10-25 | 业纳遥控设备有限公司 | Traffic monitoring component |
| CN110382779B (en) * | 2017-03-08 | 2022-03-18 | 业纳遥控设备有限公司 | Traffic monitoring assembly |
| CN109213170A (en) * | 2018-09-20 | 2019-01-15 | 杭州纳戒科技有限公司 | Shopping mechanism of car and shopping cart system |
| CN109653134A (en) * | 2019-02-02 | 2019-04-19 | 山东交通学院 | A kind of anticollision barrier |
| CN112195773A (en) * | 2020-10-30 | 2021-01-08 | 福州大学 | Longitudinal connecting device suitable for leading plate expansion joint and construction method |
| CN113216050A (en) * | 2021-05-29 | 2021-08-06 | 中国海洋大学 | Method for improving upright post of highway guardrail |
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Open date: 20080213 |