CN108004983B - A kind of flexible guardrail - Google Patents

Abstract

The invention discloses a kind of flexible guardrails.Including pile (1), key is that pile (1) is connect with attachment device (2), at least three or more wireropes (3) are fixedly connected with cutout (6) and connect with attachment device (2), the tensile strength of wirerope (3) is greater than the bending strength of attachment device (2), the shear strength of cutout (6) is less than the bending strength of attachment device (2), the bending strength of attachment device (2) is less than the bending strength of pile (1), and the flexible board (5) for compiling flag net (4) with metal is connect with wirerope (3).After having done abundant research the present invention be directed to all kinds of protective fences in the prior art, the extraordinary a kind of protective fence of a kind of comprehensive performance, security performance that obtains.

Description

A kind of flexible guardrail

Technical field:

The present invention relates to a kind of protective devices, are specifically related to a kind of protection column that prevention high-speed object is moved or protected, Another is specifically then the flexible guardrail for preventing the vehicle of high-speed cruising from going out setting road surface.

Background technique:

With social progress and development, the increasingly motorization of the vehicles, the object of each type games such as vehicle or ship What is used is very universal, then the motorized object generated and other fixed object impact events are more and more, such as the friendship of motor vehicle Interpreter thus be significantly increased in recent years, cause a considerable amount of casualties, or a large amount of all kinds of sizes ship in normal/cruise Or during typhoon in port wind sheltering, there are a large amount of shock accidents between a large amount of ship and ship or ship and harbour, cause quite huge Big property loss and casualties.In particular, it should be pointed out that present highway is in China or in the world, various countries are more and more And vehicle also increasingly increases, the collision accident occurred on annual highway is also significantly increased, significantly highway Upper Vehicle Speed is higher, causes the probability of casualties higher after crashing.Due to the two of existing highway Isolation anticollision (shield) device of side or centre is that a pile is arranged every a distance, and backplate is arranged between two adjacent piles, protects Board ends are fixed with pile, and backplate has comparable intensity by the galvanized steel plain sheet that requirements of the national standard is with a thickness of 4mm, the steel plate And elasticity, it is above-mentioned when vehicle is large-scale or heavy-duty vehicle according to highway administration department to the statistics and analysis of a large amount of traffic accidents Existing protective device can be knocked destruction substantially, but for largely current middle-size and small-size vehicle, as the speed of vehicle is very fast and Projected angle of impact is larger, and the shock of the steel plate and vehicle of above-mentioned high intensity often will cause the moderate finite deformation of vehicle and personnel is caused to hurt It dies, if projected angle of impact is smaller, the high resiliency of steel plate makes to hit vehicle to other side pop-up again, makes to hit vehicle and its behind Vehicle secondary collision occurs generate second accident or generate a chain of collision, this phenomenon goes out in rainy day, greasy weather or ice and snow weather Existing is especially prevalent.Therefore, there are apparent defects for the design requirement of the protective plate of highway or protective device at present, in addition Above-mentioned galvanized steel plain sheet can generate a large amount of pollution in process of production, zinc-plated anti-by air pollution in long-term use process Shield is difficult to persistently, and steel plate easily corrodes.The appearance for how reducing the impact strength once hit and reducing secondary impact is to reduce The critical issue of traffic accident on highway, the solution of this problem undoubtedly have very high economic value and social effect (reduce injures and deaths), in fact in river or coastal or bay, it is especially ship that the shock between ship, which also there is a problem of above-mentioned, The front end of oceangoing ship be it is tip-shape, be also easy to appear ship and ruin or personnel casualty accidents.

Summary of the invention:

Goal of the invention of the invention is that disclose a kind of protective fence safety compared with existing highway more preferably flexible anti- Guardrail.

Realize that technical solution of the invention is as follows: including pile, it is important to pile is connect with attachment device, and at least three Wirerope more than root, which is fixedly connected with cutout and cooperates with attachment device, realizes positioning, and the tensile strength of wirerope is greater than connection dress The bending strength of pliant portion is set, the shear strength of cutout is less than the bending strength of the pliant portion of attachment device, even The bending strength of connection device is less than the bending strength of pile, and the flexible board for compiling flag net with metal is connect with wirerope.

The attachment device has the socket part of one with pile socket, and there are two support portion, support portions to have and cut for socket part The insertion mouth that stripping and slicing matches, socket part are connect by bolt with pile.

The cutout has the embedded part of one with above-mentioned insertion mouth cooperation, and the prolongation of embedded part is cut Portion is cut, the other end of the prolongation has a blocking portion.

Wirerope between the cutout is relaxed state or bending.

The lower part of another pile of the end and shock point distal end of at least one wirerope is connect.

The flexible board is that metal net and plastic material are integrally formed.

The flexible board is that metal net, wirerope and plastic material are integrally formed.

The flexible board back surface is equipped with the embedded groove of corresponding wirerope, wirerope can inlay card enter above-mentioned embedded groove.

The plastic material of the flexible board is divided into two layers, the density of superficial layer or just density of (hard) degree greater than back layer Or just (hard) degree, the surface of superficial layer are equipped with reflecting marking.

The diameter of spacing difference or wirerope between the wirerope is different.

The upper end of the pile is equipped with one and increases pile, increases pile and is equipped with interception wirerope.

The interception wirerope and at least three wireropes above-mentioned are located at Different Plane.

After having done abundant research the present invention be directed to all kinds of protective fences in the prior art, a kind of comprehensive performance for obtaining, A kind of extraordinary protective fence of security performance.When hitting generation, it is assumed that rum point is a certain position between two piles, then First it is flexible board collision deformation and is transferred to impact force is different degrees of on more wireropes, wirerope moment successively transmits power To attachment device, pile and ground, while impact force can also be transmitted by attachment device to the distal end of two side direction of rum point.By In the intensity requirement of specific Technology design and each component of the invention, so that the present invention has following technological merit: first is that The major part of impact force (or energy) is absorbed by the transmission path of above-mentioned power by pile and ground, and the wink that wirerope is born is reduced Between pulling force (or energy absorption)；It is buffered stage by stage second is that realizing, the energy-absorbing time of the system before extending wirerope fracture；Third is that Effectively make impact energy to the dispersion of two side direction of shock point；Fourth is that integral energy-absorbing is high-efficient and segmentation intercepts；Fifth is that substantially Degree reduces the probability of happening of serious primary and secondary accident, improves the driving safety of the vehicle of highway；Sixth is that reducing life Pollution and maintenance cost sharp fall during producing.

Detailed description of the invention:

Fig. 1 is the positive structure schematic of protective fence of the invention.

Fig. 2 is the section structure diagram of attachment device and pile connecting portion of the invention.

Fig. 3 is the side view of attachment device.

Fig. 4 is the section structure diagram of cutout.

Fig. 5 is the section structure diagram of flexible board.

Specific embodiment:

Attached drawing is referred to, providing a specific embodiment of the invention in conjunction with attached drawing is for convenient for the understanding of the present invention, no It is construed as the limitation to invention claims.

The technical solution of referring to Figure 1~Fig. 5, specific embodiments of the present invention are: connecting including pile 1 and with pile 1 Attachment device 2, the general its underpart of pile 1 is connect to enhance the stability of pile 1 and impact with the concrete pier of stereo structure Power is effectively transferred to soil, and attachment device 2 by appellation is generally obstruction block in prior art, and the effect of obstruction block is first is that increase Add corrugated sheet or block the spacing of rope wirerope and pile, second is that playing the role of certain shock resistance, the present invention, which is known as attachment device 2, is There is substantive difference to particularly point out function, the effect of itself and existing obstruction block；At least three or more wireropes 3 and cutout 6 are fixedly connected and connect with attachment device 2, it is important to the anti-bending strength stretched intensity and be greater than attachment device 2 of wirerope 3, connection The bending strength of device 2 is less than the bending strength of pile 1, and the shear strength of cutout 6 is less than the bending strength of attachment device 2, Flexible board 5 with metal net 4 is connect with wirerope 3.To the wave beams of prior art and two class of rope wirerope is blocked through applicant Further investigation, test and the numerical simulation calculation of protective fence, the time that discovery vehicle high-speed is hit substantially tie within one second Beam blocks success or failure, that is to say, that after impact occurs, the peak value of wave beams or wirerope impact force occurs being at one second In, if the peak value is greater than a certain component maximum yield strength in protective fence, then occur being broken and causing to block unsuccessfully, therefore work as One timing of vehicle crash speed, the peak value for avoiding reaching above-mentioned are crucial；Applicant has found that the appearance of the peak value is needs one again What the accumulation fixed time can be only achieved, and when one timing of car speed, then its total Impact energy is also certain, is entirely hitting Consumption, diffusion impact energy and the time for extending knockout process as far as possible in the short time in the process, it will be able to reduce above-mentioned peak value and go out Existing probability, that is to say, that the size that can reduce the peak force being likely to be breached achievees the purpose that block vehicle；When the present invention uses When actual hot-short is hit, and assume that (what is hit is most general for a certain position of the rum point between two piles 1 The section of rate), be that the surface of flexible board 5 and vehicle collide first, flexible board 5 give one bounce of vehicle while itself Deformation, which can absorb a certain amount of Impact energy, and impact force is passed to more wireropes 3；Wirerope 3 is in flexible deformation rank The deformation of section is very small, can very short time impact force passed into attachment device 2, since the anti-intensity of stretching of wirerope 3 is greater than connection The bending strength of device 2 will then will appear the first bending deformation of attachment device 2, which had both prevented accumulates on wirerope 3 The rising (peak value i.e. above-mentioned is not in) of tired pulling force, while 2 flexible deformation of attachment device and plastic bending deformation process In again impact force is passed to pile 1 in the form of moment, impact force (Impact energy) is passed to soil by last pile 1；In In 2 deformation process of attachment device above-mentioned, impact force can be transmitted to the distal end in two direction of rum point, the above description is that connections The basal conditions of the transmitting of impact force during flexible deformation and/or plastic bending deformation of device 2, wherein crucial attachment device 2 bending deformation intensity setting is most important, should will hit the impact force that moment occurs or Impact energy is transferred to rapidly Soil matrix and distant place transfer spreading to rum point two sides prevent the pulling force on wirerope 3 to reach above-mentioned peak force again, and connect The bending deformation of device 2 is the deflection for increasing whole system and a key factor for increasing the knockout process time again；Essence On before above-mentioned 2 bending deformation of attachment device, be fixedly connected due to wirerope 3 with cutout 6 and connect with attachment device 2, when 3 stress of wirerope can make cutout 6 generate movement tendency and act on attachment device 2, cutout 6 by a shear force, The part of cutout 6 is cut away, and the wirerope being fixedly connected with cutout 63 is caused to have the state that do not stress of a very short time, this When wirerope 3 drawing force that is subject to essentially close to zero, after the resistance by attachment device 2 again of cutout 6, wirerope 3 The drawing force being subject to re-establishes again, therefore the setting of cutout 6 extends collision time, further improves of the invention Anticollision ability, it is subsequent to will be described in detail.The above-mentioned technical solution of the present invention of summary has reached a fabulous protection vehicle Impact effect.

The attachment device 2 has a socket part 11 being socketed with pile 1, and there are two support portion 12, supports for socket part 11 There is the insertion mouth 13 matched with cutout 6 in portion 12, and socket part 11 is connect by bolt 14 with pile 1, and bolt 14 and road are flat Angle between row plane is 45 °~80 °；When the pulling force of more wireropes 3 above-mentioned is applied to attachment device 2, support portion by There is curved trend to pulling force, while socket part 11 has the tendency that rotation, bolt 14 plays the role of that socket part 11 is prevented to rotate While by shearing force, the shear strength of bolt 14 should be greater than the intensity of cutout 6, then the shear displacemant of cutout 6 should be early In being cut for bolt 14, the cutting process of bolt 14 is the process of an intussusception Impact energy again, and when bolt 14 is cut, Socket part 11, which has a rotary course, to be made wirerope 3 again and has moment relaxation and reduce the mistake that the pulling force accumulation of wirerope 3 rises Journey.Above-mentioned whole process further increases the ductility of wirerope 3 and extends the time of intussusception Impact energy.

To further increase protective capacities of the invention and extending collision time, attachment device 2 above-mentioned is through a cutout 6 It is connect with wirerope 3, the shear strength of cutout 6 is less than the bending strength of attachment device 2, and the wirerope 3 between two cutouts 6 is Bending；When wirerope 3 is by powerful pulling force, wirerope 3 applies a power and acts on cutout 6, and cutout 6 applies a power Yu Lian Connection device 2, when pulling force is sufficiently large, the part of cutout 6 be sheared power effect break through the limitation of attachment device 2 and be displaced one away from From, while above-mentioned forniciform wirerope 3 is stretched as straightway by cutout 6；Above-mentioned process nature is an impact energy Consumption process or a buffering course, braking is similarly to, when will be whole under blocking of the cutout 6 in attachment device 2 Pulling force is applied to attachment device 2 again, due to it is practical hit occur when, the striking face of the position difference and vehicle of more wireropes 3 Non-planar, the stress time of more wireropes 3 and size are different, to realize repeatedly above-mentioned buffering energy-absorbing process, at least Length (or bending different) of piece wirerope 3 between two cutouts 6 is greater than other wireropes 3, then can be achieved above-mentioned multiple Shear history, the crash energy absorption equipment of multiple braking formula is realized, when more wireropes 3 become straight line stress from bending When, this, which can be considered, has successive and of different sizes situation for stress before more wireropes 3, is adjusted to the identical shape of basic stress State, and applied a force in the bigger attachment device 2 of intensity simultaneously, certainly above-mentioned buffering energy-absorbing process also adds wirerope 3 Flexible deformation time, also increase the deflection of wirerope 3.

After attachment device 2 rotates movement, above-mentioned support portion 12 will be simultaneously by shearing force and drawing force, and holds Continuous to apply a force on pile 1,1 stress Shi Qihui of pile point centered on the concrete pier of pile 1 generates rotary motion Trend and/or rotate movement, while itself also generating the trend of bending deformation and/or deforming, such as will be above-mentioned The end of at least one wirerope 3 is connect with the lower part of another pile 1 of shock point distal end, then can more be had more Impact energies The pile 1 for passing to other distal ends of effect, others wirerope 3 equally also transmits impact force to distal end certainly, is only connected to The energy that distally wirerope 3 of another 1 lower part of pile transmits more effectively passes to soil matrix, and the deformation generated is smaller that (torque is more It is short).

Above-mentioned is the basic process for the deformation that each component of entire protective fence generates after hitting generation, and the present invention Structure design extends knockout process effectively and effective absorption Impact energy, actually knockout process is increasingly complex, hits Hitting early period still has the technology contents that need to be further described.

Flexible board 5 above-mentioned is connect with wirerope 3, and when hitting generation, vehicle and 5 front surface of flexible board are collided, 5 meeting of flexible board It deforming and absorbs a part of Impact energy, the flexible board 5 is integrally formed by metal net 4 and plastic material 7, or Flexible board 5 is integrally formed by metal net 4, wirerope 3 and plastic material 7, and the realization of two kinds of above-mentioned structures depends on extrusion molding Technique, existing extrusion process can be achieved；Plastic material 7 and metal net 4 apply impact force fast and effectively when shock It is added on wirerope 3, increases the integral rigidity and rapid dispersion impact force Yu Duogen wirerope 3 of flexible board 5, above-mentioned rigidity is to shock The power that moment reacts on vehicle is critically important, vehicle can be made to generate a deviation displacement, and the direction of the displacement can be with vehicle Original direction of motion is overlapped, and is conducive to hit the steering of vehicle and reduce the Impact energy for being applied to protective fence；The gold Belonging to mesh grid 4 in deformation process, each of which grid is deformed, due to having plastic material in each grid, then grid Opposite metal strip catenary motion carries out extrusion shearing to plastic material 7, can consume a large amount of Impact energy, while distortion of the mesh When the winding nodes of two two adjacent metal strips can generate the friction between metal strip, which can also consume and largely hit Energy is hit, if wirerope 3 and flexible board 5 are not to be integrally formed, is then equipped with the embedded groove 8 of corresponding wirerope 3 in 5 back surface of flexible board, Wirerope 3 can inlay card enter above-mentioned embedded groove 8, embedded groove 8, which can be depressed in the back side of flexible board 5 or 5 back side of flexible board, has strip convex The back side of flexible board 5 is played and protrudes from, strip projected parts are equipped with above-mentioned embedded groove 8, and the position of two different embedded grooves 8 exists It can be achieved on extrusion process, when 5 back surface of flexible board has strip projected parts, rigidity is further increased；Above-mentioned wirerope 3 can The cladding of one layer of plastic material is imposed on its surface by extrusion process, then above-mentioned metal net 4 and wirerope 3 are by plasticity Material cladding, both can be improved the weatherability and corrosion resistance of entire flexible board 5, the also production technology compared with existing wave beams The generation of pollution is eliminated, there is apparent environmental benefit.

The case where rigidity head-on collision percussion of flexible board 5 already described before generates reaction force when raw, substantially by impact The principle of mechanics, the density or hardness for being knocked object have an impact to reaction force, therefore the flexible board 5 and plastic material 7 points are two layers, the density of superficial layer or just (hard) degree (hard) degree greater than the density of back layer or just, and metal net 4 is located at In back layer, the superficial layer of high density or high rigidity can increase the reaction force to vehicle, and the back layer of low-density can increase Metal net deforms the viscosity of shear plasticity material and increases the broken probability of plastic material and time, absorbs to flexible board 5 Impact energy increases.It is equipped with reflecting marking 18 on the surface of superficial layer, reflecting marking 18 and superficial layer are with plastic co-extrusion one It is body formed, then warning function and safety can be improved.

Since the vehicle of high-speed cruising is different, striking face when hitting from protective fence is often different, more not due to vehicle Together, the emphasis height of vehicle is different, therefore the stress difference of each wirerope 3 and spreading condition difference, therefore each wirerope of flexible board 5 Spacing between 3 is different, and optimal setting should be that its spacing increases down from highest order wirerope 3, to adapt to the weight of different vehicle The difference of point position, blocking when especially higher to the emphasis of large and medium-sized vehicle effect is more preferable or the diameter of each wirerope 3 not Together, the distribution of optimal diameter is that its diameter reduces down from highest order wirerope 3, to large and medium-sized vehicle block strength Relatively centralized in It is high-order.

It is vital, shock to blocking for large and medium-sized vehicle in actual highway or mountain highway section Energy is huge, but blocks to large-scale or heavy-duty vehicle, the poor effect that existing wave beams or cable block, wherein one A major reason is that the center of gravity of oversize vehicle is higher, and low level, which blocks, often phenomenon of rolling or turn on one's side occurs, therefore the present invention is in pile 1 Upper end be equipped with and one increase pile 9, increase pile 9 and be equipped with and intercept wirerope 10, this is extremely heavy to the large and medium-sized vehicle of high center of gravity It wants, avoids the occurrence of rolling or rollover, further investigate knockout process, wirerope 10 will be intercepted and be located at at least three wireropes 3 above-mentioned In Different Plane, if wirerope 3 is located at the meeting before vehicle of attachment device 2, and the back side that wirerope 10 is set to pile 1 is intercepted, then blocked It cuts there are a spacing between wirerope 10 and wirerope 3, interception wirerope 10 carries out most after Vehicular impact energy is consumed major part Blocking afterwards, finally stops vehicle.

Claims (12)

1. a kind of flexible guardrail, including pile (1), it is characterised in that pile (1) is connect with attachment device (2), and at least three Above wirerope (3), which is fixedly connected with cutout (6) and cooperates with attachment device (2), realizes positioning, the tensile strength of wirerope (3) Greater than the bending strength of attachment device (2) pliant portion, the shear strength of cutout (6) is less than the pliable of attachment device (2) The bending strength of bent portions, the bending strength of attachment device (2) are less than the bending strength of pile (1), have metal net (4) Flexible board (5) connect with wirerope (3).

2. flexible guardrail according to claim 1, it is characterised in that the attachment device (2) has one to cover with pile (1) The socket part (11) connect, socket part (11) there are two support portion (12), support portions (12) the insertion matched with cutout (6) Mouth (13), socket part (11) are connect by bolt (14) with pile (1).

3. flexible guardrail as described in claim 2, it is characterised in that the cutout (6) has one and above-mentioned insertion mouth (13) embedded part (15) cooperated, the prolongation of embedded part (15) has a cut part (16), the prolongation it is another End has a blocking portion (17).

4. by flexible guardrail described in claims 1 or 2 or 3, it is characterised in that the wirerope between the cutout (6) It (3) is relaxed state or bending.

5. flexible guardrail according to claim 4, it is characterised in that the end of at least one wirerope (3) and impact The lower part connection of another pile (1) of point distal end.

6. flexible guardrail as described in claim 5, it is characterised in that the flexible board (5) be metal net (4) with Plastic material (7) is integrally formed.

7. flexible guardrail according to claim 6, it is characterised in that the flexible board (5) is metal net (4), steel Cable (3) and plastic material (7) are integrally formed.

8. flexible guardrail according to claim 6, it is characterised in that flexible board (5) back surface is equipped with corresponding wirerope (3) embedded groove (8), wirerope (3) can inlay card enter above-mentioned embedded groove (8).

9. by flexible guardrail described in claim 6 or 7 or 8, it is characterised in that the plastic material of the flexible board (5) (7) it is divided into two layers, the density or hardness of superficial layer are greater than the density or hardness of back layer, and the surface of superficial layer is equipped with reflecting marking (18)。

10. by flexible guardrail described in claims 1 or 2 or 3 or 5 or 6 or 7 or 8, it is characterised in that the wirerope (3) Between spacing is different or the diameter of wirerope (3) is different.

11. flexible guardrail as described in claim 10, it is characterised in that the upper end of the pile (1) is equipped with one and increases stake Column (9) increases pile (9) and is equipped with interception wirerope (10).

12. flexible guardrail according to claim 11, it is characterised in that the interception wirerope (10) and it is above-mentioned at least Three wireropes (3) are located at Different Plane.