CN104060561B - A kind of guardrail and mounting method thereof - Google Patents
A kind of guardrail and mounting method thereof Download PDFInfo
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- CN104060561B CN104060561B CN201410322523.8A CN201410322523A CN104060561B CN 104060561 B CN104060561 B CN 104060561B CN 201410322523 A CN201410322523 A CN 201410322523A CN 104060561 B CN104060561 B CN 104060561B
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- fence upright
- guardrail
- fixed head
- rebound
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Abstract
The invention discloses a kind of guardrail, comprising: fence upright and the wire rope be connected with fence upright, fence upright comprises: the first installing plate, and the number of the first installing plate is two, and the opposing parallel layout of the first installing plate; Be arranged on first installing plate one end for connecting the fixed head of two the first installing plate longer sides, the length of fixed head is equal with the length of the first installing plate longer sides, and fixed head is connected with wire rope.As can be seen from technique scheme, when compact car and column collide, the side in U-shaped cross section caves inward, remitted its fury, now the rigidity of fence upright can weaken along with weakening of compact car collision energy, and when large car and column collide, the both sides in U-shaped cross section are outwardly, intensity increases, and effectively prevents secondary collision from occurring., different deformation can be there is according to different vehicles, improve the security performance of fence upright in the fence upright that this programme provides.
Description
Technical field
The present invention relates to highway safe guarding device technical field, particularly a kind of guardrail and guardrail mounting method thereof.
Background technology
Existing guardrail is divided into stiff safety fence, semi-rigidity rail and flexible safety fence by mechanical characteristic.Column is a part for guardrail composition, is also one of key member determining guardrail performance.
At present, the design of domestic fence upright mainly stresses crashworthiness, and its rigidity is higher, and column rigidity is high, can play resistance and stumble and act on, can not change, poor safety performance along with the change of the impact energy of errant vehicle in the collision process of vehicle and guardrail to vehicle.
Therefore, how to improve the security performance of fence upright, become the technical problem that those skilled in the art are urgently to be resolved hurrily.
Summary of the invention
In view of this, the invention provides a kind of guardrail, to improve the security performance of fence upright.Present invention also offers a kind of guardrail mounting method.
For achieving the above object, the invention provides following technical scheme:
A kind of guardrail, comprising: fence upright and the wire rope be connected with described fence upright, described fence upright comprises:
First installing plate, the number of described first installing plate is two, and the opposing parallel layout of described first installing plate;
Be arranged on described first installing plate one end for connecting the fixed head of two described first installing plate longer sides, the length of described fixed head is equal with the length of described first installing plate longer sides, and described fixed head is connected with described wire rope.
Preferably, in above-mentioned guardrail, described fixed head is arc fixed plate, concave surface facing described first installing plate of described fixed head.
Preferably, in above-mentioned guardrail, also comprise and be arranged on the described first installing plate other end and longer sides along described first installing plate arranges that the length of described rebound is equal with the length of described first installing plate longer sides for the rebound of damp impacts power.
Preferably, in above-mentioned guardrail, described rebound is quarter circular arc plate, and the concave surface of described rebound is positioned opposite.
Preferably, in above-mentioned guardrail, described rebound and described first installing plate are welded to connect.
Preferably, in above-mentioned guardrail, described first installing plate, described fixed head and described rebound are the plate that low-carbon steel material makes.
Preferably, in above-mentioned guardrail, described fence upright is integrated the fence upright of bending and molding.
A kind of guardrail mounting method, for installing the guardrail described in above-mentioned any one, comprises step:
1) pre-buried described fence upright, described first installing plate of described fence upright and the tangential direction of road are arranged vertically;
2) wire rope is connected with the described fixed head of described fence upright.
As can be seen from technique scheme, the fixed head that fence upright provided by the invention comprises the first installing plate and is connected with the longer sides of the first installing plate, the first installing plate and fixed head form U-shaped shape, and fixed head is connected with wire rope.The fence upright that this programme provides is hollow column, lower relative to column strength of the prior art, and in the collision process of vehicle and fence upright, corresponding deformation can occur column, plays certain guide effect to crashing vehicle.When compact car and column collide, the side in U-shaped cross section caves inward, remitted its fury, now the rigidity of fence upright can weaken along with weakening of compact car collision energy, when large car and column collide, the both sides in U-shaped cross section are outwardly, and intensity increases, and effectively prevents secondary collision from occurring.The fence upright that this programme provides, different deformation can be there is according to different vehicles, both can play energy-absorbing function to compact car collision, and also can play guide effect, energy-absorbing can be played to the collision of large car and prevent the effect of secondary collision, improve the security performance of fence upright.
Present invention also offers a kind of guardrail mounting method, in installation process, the tangential direction of fence upright and road is arranged vertically, and increases structural area when accident vehicle and fence upright collide, make fence upright can effective energy-absorbing, improve the security performance that fence upright uses.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
The structural representation of the fence upright that Fig. 1 provides for the embodiment of the present invention;
The deformation schematic diagram that the fence upright that Fig. 2 provides for the embodiment of the present invention and large car occur when colliding;
The deformation schematic diagram that the fence upright that Fig. 3 provides for the embodiment of the present invention and compact car occur when colliding;
The top view of the fence upright that Fig. 4 provides for the embodiment of the present invention;
Schematic diagram during the fence upright installation that Fig. 5 provides for the embodiment of the present invention.
Detailed description of the invention
The invention discloses a kind of guardrail, to improve the security performance of fence upright.The invention also discloses a kind of guardrail mounting method.
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
Refer to Fig. 1-Fig. 5, the structural representation of the fence upright that Fig. 1 provides for the embodiment of the present invention; The deformation schematic diagram that the fence upright that Fig. 2 provides for the embodiment of the present invention and large car occur when colliding; The deformation schematic diagram that the fence upright that Fig. 3 provides for the embodiment of the present invention and compact car occur when colliding; The top view of the fence upright that Fig. 4 provides for the embodiment of the present invention; Schematic diagram during the fence upright installation that Fig. 5 provides for the embodiment of the present invention.
A kind of guardrail, comprising: fence upright 4 and the wire rope be connected with fence upright 4, fence upright 4 comprises:
The number of the first installing plate 1, first installing plate 1 is two, and the opposing parallel layout of the first installing plate 1;
Be arranged on first installing plate 1 one end for connecting the fixed head 2 of two the first installing plate 1 longer sides, the length of fixed head 2 is equal with the length of the first installing plate 1 longer sides, and fixed head 2 is connected with wire rope.
The wire rope that the guardrail that this programme provides comprises fence upright 4 and is connected with fence upright 4, fence upright 4 is hollow protective fence column 4, comprises the first installing plate 1 and is connected and fixed plate with the first installing plate 1, and hollow protective fence column 4 entirety is U-shaped structure.
The present invention derives from crash-worthiness topological optimization result.Traditional Topology Optimization Method is generally used for static and simple dynamic optimization, based on sensitivity analysis, the topology optimization problem of instantaneous herk and complicated fringe conditions can not be solved, this programme uses crash-worthiness topological optimization technology to solve the continuous topology optimization problem of Nonlinear Transient large deformation, adopt density variable method: density variable method realizes by Finite Element Method, the density of material of each unit is as design variable, density of material can between 0 to 1 consecutive variations, the Rigidity and strength of unit is visualized as and meets certain linear relationship with density of material, carry out deleting to obtain optimum topological structure according to cell density after optimization.The method obtains the optimal material distribution scheme not only meeting constraints but also meet object function in given design domain, and it only needs designer to provide design domain, constraints and optimization aim, just automatically can calculate the topology configuration of structure optimum.Based on the impact conditions of the present invention's A level guardrail in " highway barrier safety evaluatio standard JTGB05-01-2013 ", the square sectional column of 200mm*200mm is set to optimize region, with energy density CONSENSUS and the maximum constraints turning to topological optimization of energy-absorbing in the guidance quality of vehicle, column, to optimize mass ratio as topological optimization target, comprehensive analysis different quality, than corresponding result, extracts topology configuration.
Collision energy when different vehicle collides from the guardrail with U-shaped structure fence upright 4 is different, the active force that wire rope acts on fence upright 4 is also different, fence upright 4 is subject to different collision energies also can there is different deformation, column along with the automatic adjusting post of the impact energy of errant vehicle ratio of rigidity in length and breadth, can adapt to different impact conditions:
When compact car and guardrail collide, the impact energy of compact car is relatively little, the power impinged upon on steel wire is comparatively concentrated, the fence upright 4 that the wire rope meeting pull distance shock place of being clashed into is nearer, two the first installing plates 1 of fence upright 4 are to the same side depression or protrude, namely fence upright 4 bends, there is plastic strain, aspect ratio diminishes, rigidity decreases, steadily and absorb impact energy to greatest extent, the acceleration of compact car decreases, the safety of available protecting driver and by bus personnel;
When large car and guardrail collide, the impact energy of large car is relatively large, also larger with contact area during rail collision, force rate is comparatively disperseed, fence upright 4 can be subject to the pulling force of both direction, two the first installing plates 1 are all pulled outwardly dynamic, namely the deformation direction of two the first installing plates 1 is contrary, distance between two the first installing plates 1 becomes large, absorbs certain impact energy, and aspect ratio becomes large, the rigidity of fence upright 4 increases thereupon, improve crashworthiness, the side-play amount of large car reduces thereupon, effectively prevents the generation of second accident.
The device that this programme provides, for different crashing vehicle, the deformation that fence upright 4 occurs is different, mechanical characteristic is different with energy-absorbing mode, produce different effects for different vehicles: for compact car, given full play to guide effect, effective energy-absorbing, improve crashworthiness for large car, effectively prevent the generation of second accident.The device that this programme provides, not only fence upright 4 can absorb a part of impact energy, and wire rope also can absorb a part of impact energy, and according to different automobile types, different deformation occurs, and automatically regulates aspect ratio, improves safety and the versatility of guardrail use.
The fence upright 4 that this programme provides can regulate the sectional dimension of fence upright 4 according to different road conditions demands; it is made to be absorbed completely by energy in certain distance; when during improvement generation traffic accident, vehicle and fence upright clash into greatly, contact area is little, impact contact force is excessive, column rigidity is excessive and the problem such as fence upright 4 and wire rope cooperative bearing ability, the safety of available protecting occupant and vehicle.
The fence upright 4 that this programme provides not only may be used for flexible safety fence, also may be used for semi-rigidity rail.
In order to optimize technique scheme further, in a specific embodiment of the present invention, fixed head 2 is arc fixed plate, concave surface facing first installing plate 1 of fixed head 2, in the process that compact car or large car and guardrail collide, can be there is certain deformation in arc, play certain cushioning effect to collision, improves the safety that guardrail uses further.
The device that the program provides is well positioned to meet guardrail safety evaluation index, has with low cost, easy for installation, the features such as later maintenance cost is low, after colliding, only need the fence upright 4 deformed to change, new fence upright 4 is fixed with wire rope.
In order to optimize technique scheme further, in a specific embodiment of the present invention, also comprise and be arranged on first installing plate 1 other end and longer sides along the first installing plate 1 is arranged for the rebound 3 of damp impacts power, the length of rebound 3 is equal with the length of the first installing plate 1 longer sides, when vehicle and fence upright 4 collide, there is certain deformation in rebound 3, play cushioning effect, reduce accident impact, in addition, rebound 3 makes fence upright 4 entirety not have sharp-pointed corner angle, can prevent from damaging pedestrian or vehicle.
The guardrail that this programme provides is not only applicable to trackside protection, is applicable to protect in road yet.
The conveniently making of fence upright 4, rebound 3 is quarter circular arc plate, the concave surface of rebound 3 is positioned opposite, and towards the first installing plate 1, quarter circular arc plate relatively easily makes, and reduce difficulty of processing, the central angle of rebound 3 also can be other angles, such as 60 ° or 70 ° or 85 °, be not specifically limited at this.
Guardrail mounting process has multiple, and the first is: rebound 3 and the first installing plate 1 are welded to connect, and rebound 3, first installing plate 1 and fixed head 2 are the plate made respectively, and three is welded to form fence upright 4;
The second, fence upright 4 is integrated the fence upright 4 pulling foldable type, chooses a flat board and makes fence upright 4 by pulling folding technique.
In order to ensure the working strength of fence upright 4, the first installing plate 1, fixed head 2 and rebound 3 are the plate that low-carbon steel material makes.
Present invention also offers a kind of guardrail mounting method, for installing the guardrail described in above-mentioned any one, comprising step:
1) pre-buried fence upright 4, the first installing plate 1 of fence upright 4 is arranged vertically with the tangential direction of road, can ensure that fence upright 4 and car body have larger contact area, effective energy-absorbing, improve safety factor;
2) wire rope is connected with the fixed head 2 of fence upright 4, makes in collision process, wire rope and fence upright cooperative bearing, the crashproof ability of guardrail can be ensured, also can ensure the guidance quality of guardrail.
Wire rope is connected by linking up with fence upright, and the number of plies of wire rope is 2-5 layer, and every layer comprises one or more wire rope.
To the above-mentioned explanation of the disclosed embodiments, professional and technical personnel in the field are realized or uses the present invention.To be apparent for those skilled in the art to the multiple amendment of these embodiments, General Principle as defined herein can without departing from the spirit or scope of the present invention, realize in other embodiments.Therefore, the present invention can not be restricted to these embodiments shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (6)
1. a guardrail, comprising: fence upright (4) and the wire rope be connected with described fence upright (4), and it is characterized in that, described fence upright (4) comprising:
First installing plate (1), the number of described first installing plate (1) is two, and described first installing plate (1) opposing parallel layout;
Be arranged on described first installing plate (1) one end for connecting the fixed head (2) of two described first installing plate (1) longer sides, the length of described fixed head (2) is equal with the length of described first installing plate (1) longer sides, and described fixed head (2) is connected with described wire rope;
Also comprise being arranged on described first installing plate (1) other end and arranging along the longer sides of described first installing plate (1) and be used for the rebound (3) of damp impacts power, the length of described rebound (3) is equal with the length of described first installing plate (1) longer sides, described rebound (3) is quarter circular arc plate, and the concave surface of described rebound (3) is positioned opposite.
2. guardrail according to claim 1, is characterized in that, described fixed head (2) is arc fixed plate, concave surface facing described first installing plate (1) of described fixed head (2).
3. guardrail according to claim 1, is characterized in that, described rebound (3) and described first installing plate (1) are welded to connect.
4. guardrail according to claim 1, is characterized in that, described first installing plate (1), described fixed head (2) and described rebound (3) are the plate that low-carbon steel material makes.
5. guardrail according to claim 1, is characterized in that, described fence upright (4) is integrated the fence upright (4) of bending and molding.
6. a guardrail mounting method, is characterized in that, for installing as the guardrail in claim 1-5 as described in any one, comprises step:
1) pre-buried described fence upright (4), described first installing plate (1) of described fence upright (4) and the tangential direction of road are arranged vertically;
2) wire rope is connected with the described fixed head (2) of described fence upright (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410322523.8A CN104060561B (en) | 2014-07-08 | 2014-07-08 | A kind of guardrail and mounting method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410322523.8A CN104060561B (en) | 2014-07-08 | 2014-07-08 | A kind of guardrail and mounting method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104060561A CN104060561A (en) | 2014-09-24 |
| CN104060561B true CN104060561B (en) | 2016-02-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410322523.8A Active CN104060561B (en) | 2014-07-08 | 2014-07-08 | A kind of guardrail and mounting method thereof |
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Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2793501B1 (en) * | 1999-05-12 | 2001-07-13 | Profiles Du Ct | DEVICE FOR MOUNTING A SECURITY SLIDE ON VERTICAL FLOOR MOUNTING SUPPORTS |
| SE521966C3 (en) * | 2000-05-26 | 2004-01-21 | Blue Systems Ab | side rail |
| WO2009100365A1 (en) * | 2008-02-08 | 2009-08-13 | Nucor Corporation | Cable guardrail system and hanger |
| EP2455546B1 (en) * | 2010-11-09 | 2014-07-23 | Volkmann & Rossbach GmbH & Co. KG | Post assembly for a protective plank construction and protective plank construction for securing tracks on structures |
| CN202500108U (en) * | 2012-01-11 | 2012-10-24 | 卢彦兵 | Fence connecting column |
| CN203113245U (en) * | 2013-03-29 | 2013-08-07 | 王立明 | Cable guardrail stand column |
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2014
- 2014-07-08 CN CN201410322523.8A patent/CN104060561B/en active Active
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