CN103526705A - Guardrail safety system for dissipating energy to decelerate the impacting vehicle - Google Patents
Guardrail safety system for dissipating energy to decelerate the impacting vehicle Download PDFInfo
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- CN103526705A CN103526705A CN201310322992.5A CN201310322992A CN103526705A CN 103526705 A CN103526705 A CN 103526705A CN 201310322992 A CN201310322992 A CN 201310322992A CN 103526705 A CN103526705 A CN 103526705A
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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
- E01F15/00—Safety arrangements for slowing, redirecting or stopping errant vehicles, e.g. guard posts or bollards; Arrangements for reducing damage to roadside structures due to vehicular impact
- E01F15/14—Safety arrangements for slowing, redirecting or stopping errant vehicles, e.g. guard posts or bollards; Arrangements for reducing damage to roadside structures due to vehicular impact specially adapted for local protection, e.g. for bridge piers, for traffic islands
- E01F15/143—Protecting devices located at the ends of barriers
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Abstract
The invention relates to a guardrail safety system for dissipating energy to decelerate the impacting vehicle. A terminal portion of a guardrail safety system includes a terminal portion of a guardrail beam having a downstream end and upstream end. The terminal portion of the guardrail beam slopes from a height appropriate for redirecting an errant vehicle to a height proximate the surface of the ground at an upstream end of the terminal portion. Support posts are installed adjacent a roadway in spaced apart relation to one another and are coupled to the terminal portion of the guardrail beam. A terminal support post is installed adjacent the roadway at an upstream end of the terminal portion of the guardrail beam. The terminal support post couples to an upstream end of the terminal portion of the guardrail beam by a resistive, tensile coupling that maintains tension in the terminal portion of the guardrail beam. The resistive, tensile coupling is maintained between the terminal support post and the guardrail beam during an end-on or re-directive impact by a vehicle. However, the resistive, tensile coupling between the terminal support post and the guardrail beam is released during a reverse-direction impact.
Description
The application is dividing an application of application for a patent for invention based on the applying date is that May 5, application number in 2009 are 200980126179.2, denomination of invention is " for dissipation energy so that the guardrail safety system that vehicle impact is slowed down ".
Technical field
The present invention relates generally to the safety measure (treatment) for W beam guardrail (W-beam guardrail); Relate in particular to the guardrail terminal of tensioning, this terminal dissipates for clash into the Impact energy making with the automobile of the end collision of W beam guardrail in correct (end-on) or break-in (re-directive).
Background technology
Along most of speedways, all have some harm, if automobile leaves speedway, these harm may have very large danger for driver.In order to reduce the seriousness of leaving the accident that speedway causes due to vehicle, be provided with guardrail.Guardrail is installed into beam element is offered help in the shock in break-in type in tensioning state (in tension).But, guardrail north permitted to be installed into make these guardrails, towards that end of the magnitude of traffic flow, do not become harm.Early stage guardrail does not have suitable terminal endways, and the vehicle of shock stings on guardrail, causes the violent deceleration of vehicle grievous injury occupant's situation unrare.In the case of some reports, guardrail directly stings in the crew department through vehicle, and occupant is caused to mortal injury.
After recognize the problem of suitable guardrail terminal, developed the Guardrail design that uses box beam and W beam, the end that these beams allow guardrails is in landing ground and be tapered (taper).The effect of any lance formula has been eliminated in these designs.Although the danger that vehicle is pierced in central collision has successfully been eliminated in these end measures, but find that these end measures are to be similar to the mode work on inclined-plane, and may cause that vehicle is dished out, and make it the very large segment distance of flight, may cause and topple.
In finding the process of better end measure, developed the energy absorption end measure for the improvement of W beam guardrail element.For example developed extruder (extruder) terminal, this terminal generally includes bending structure, and this structure is squeezed into guardrail dull and stereotyped, then it is bent around circular arc, and described circular arc is back to vehicle impact.The ET2000 being provided by Trinity Highway Products is provided exemplary extruder end product
tMand ET-PLUS
tM.Other extruder end product comprises the Systems by Road, the SKT350 that Inc. provides
tMand FLEAT350
tM.
These all energy absorber systems are all used cable that the one w beam guardrail section is connected to the first pillar in system.Cable provides tension force in guardrail beam element, and the break-in of carrying out for the part along guardrail Len req collides.Many cable slack pillars have been developed to be used in these terminals.These cable slack pillars are intended to: when pillar is subject to clashing into along positive (correct shock) or reverse side direction, makes cable anchor (anchor) lax, thereby and the tension recovery in system is got off.In the knockout process of enemy's shock and reverse type, these systems can not remain in tensioning state.
Summary of the invention
The invention provides for freeway guardrail, new and improved end measure.
According to a particular embodiment of the invention, a kind of end measure of guardrail safety system comprises the terminal part of guardrail beam, and this part comprises upstream extremity and downstream.At the upstream extremity place of the terminal part of guardrail beam, the terminal part of guardrail beam is not from the first vertical high inclination of being suitable for drift vehicle to be redirected to subaerial second vertically highly.Planarization partly forms raceway groove, and the terminal part of guardrail beam is arranged through described raceway groove.The vertical size of raceway groove is larger at the upstream extremity place of planarization part at the downstream end ratio of planarization part.Crash panel is connected to planarization part, for the end at guardrail beam, engages with vehicle impact.In correct knockout process, vehicle makes crash panel and planarization part longitudinally advance on downstream direction along guardrail.This advancing of crash panel and planarization part dissipated energy so that vehicle impact deceleration.Along with the downstream part of guardrail beam is forced in planarization part, guardrail in the vertical direction is flattened.
The technological merit of specific embodiments of the invention comprises: the measure of guardrail end dissipates Impact energy by the compression of W beam guardrail element.Therefore, an advantage can be that this guardrail end measure is energy-absorbing.Another advantage can be, this end measure forces W beam guardrail element through plat structure, and this plat structure squeezes into comparatively smooth plate by guardrail.Particularly, this guardrail end measure can be by making a part of planarization of guardrail, the Impact energy of dissipate vehicle and the collision of guardrail end.
Another advantage can be that the end of W beam guardrail element extends through plat structure, and attenuates to landing ground.W beam guardrail element can be fastened to ground with tensioning state.Provide system element that between guardrail beam and terminal supporting strut, tensioning is connected can make guardrail beam after enemy or break-in are clashed into, keep fastening.Like this, this system can all keep tensioning in the knockout process of two types.But another advantage can be that, when system is subject to oppositely clashing near terminal, this tensioning state can unclamp.The tensioning state that unclamps guardrail element for reverse shock has prevented vehicle unstability and has excessively slowed down.
According to a particular embodiment of the invention, a kind of terminal part of guardrail safety system comprises the terminal part of guardrail beam, and the terminal part of guardrail beam comprises upstream extremity and downstream.At the upstream extremity place of terminal part, the terminal part of guardrail beam is from the first vertical high inclination that is suitable for drift vehicle to be redirected to the subaerial second vertical height.Supporting strut is installed with the contiguous highway of mode being spaced apart from each other, and is connected to the terminal part of guardrail beam.Terminal supporting strut is installed at the contiguous highway in the upstream extremity place of most end terminal.Terminal supporting strut is by upstream extremity resistant, that connected mode tensioning is connected to the terminal part of guardrail beam, and described connected mode resistant, tensioning maintains tensioning state in the terminal part of guardrail beam.The enemy that carries out at vehicle clash into or break-in knockout process in, being maintained resistant, being connected of tensioning between terminal supporting strut and guardrail beam.But in reverse knockout process, being connected of resistant, the tensioning between terminal supporting strut and guardrail beam is released.
The technological merit of specific embodiments of the invention comprises: the measure of guardrail end dissipates Impact energy by the compression of W beam guardrail element.Therefore, an advantage can be that this guardrail end measure is energy-absorbing.Another advantage can be, this end measure forces W beam guardrail element through plat structure, and this plat structure squeezes into comparatively smooth plate by guardrail.Particularly, this guardrail end measure can be by making a part of planarization of guardrail, the Impact energy of dissipate vehicle and the collision of guardrail end.
Another advantage can be that the end of W beam guardrail element extends through plat structure, and attenuates to landing ground.W beam guardrail element can be fastened to ground with tensioning state.Provide system element that between guardrail beam and terminal supporting strut, tensioning is connected can make guardrail beam after enemy or break-in are clashed into, keep fastening.Like this, this system can all keep tensioning in the knockout process of two types.But another advantage can be that, when system is subject to oppositely clashing near terminal, this tensioning state can unclamp.The tensioning state that unclamps guardrail element for reverse shock has prevented vehicle unstability and has excessively slowed down.
Those skilled in the art easily understand other technologies advantage from accompanying drawing, manual and claim below.In addition, although enumerated multiple concrete advantage above, various embodiment can comprise in these cited advantages whole, partly or not comprise.
Accompanying drawing explanation
Fig. 1 illustrates the top view of the exemplary guardrail safety system that comprises some aspect of the present invention;
Fig. 2 illustrates the lateral view of the terminal part of the fence sytsem that comprises some aspect of the present invention;
Fig. 3 illustrates according to a particular embodiment of the invention, the lateral view of the exemplary embodiment of end measure in the terminal part of fence sytsem;
Fig. 4 A and Fig. 4 B illustrate respectively lateral view and the outline drawing of the modified guardrail beam that comprises some aspect of the present invention;
Fig. 5 A-5C illustrates according to a particular embodiment of the invention, is suitable for being used in the exemplary reduction supporting strut in guardrail safety system;
Fig. 6 A-6C illustrates according to a particular embodiment of the invention, is suitable for being used in the exemplary reduction supporting strut of another kind in guardrail safety system;
Fig. 7 A-7C illustrates according to a particular embodiment of the invention, is suitable for being used in the exemplary unmodified supporting strut in guardrail safety system;
Fig. 8 A and Fig. 8 B illustrate according to a particular embodiment of the invention, are suitable for being used in the exemplary embodiment of the terminal supporting strut in guardrail safety system;
Fig. 9 A-9C illustrates according to a particular embodiment of the invention, for guardrail beam being connected to the various elements of the resistant tensioning connected mode of terminal supporting strut;
Figure 10 A and Figure 10 B illustrate according to a particular embodiment of the invention, for guardrail beam being connected to the exemplary resistant tensioning connected mode of terminal supporting strut;
Figure 11 A and Figure 11 B illustrate according to a particular embodiment of the invention, are suitable for being used in the exemplary pole in guardrail safety system;
Figure 12 illustrates according to a particular embodiment of the invention, for guardrail beam being connected to the alternative embodiment of the resistant tensioning connected mode of terminal supporting strut.
The specific embodiment
It is unsafe that the measure of existing guardrail end has been proved to be for some impact conditions occurring on speedway, comparatively responsive for details is installed, and/or very expensive.But end measure described below is the safety measure for W beam guardrail end, it provides higher performance level in wider impact conditions, has reduced end measure cost and the injures and deaths number relevant with guardrail terminal accident.In the process of enemy's shock and break-in types of impacts, described system all maintains tension force in guardrail beam element.But when this system near terminal when being oppositely subject to clashing into.Grappling (anchorage) system can relax, to prevent vehicle unstability or excessively to slow down.
Fig. 1 illustrates the guardrail safety system 100 that comprises some aspect of the present invention.Fence sytsem 100 can be arranged near Highway and avoid various impairments and harm with protection vehicle, driver and passenger, and prevents that vehicle from leaving highway in traffic accident or other harm conditioning processes.The fence sytsem that comprises these aspects of the present invention can maybe may face in any path of vehicular traffic for isolation strip or curb at speedway, highway.
But test and experiment show constantly: in fact fence sytsem may introduce other harm for highway and peripheral region.Especially true for following situation: near the terminal part of fence sytsem, the parallel direction of ,Yan Yu highway cardinal principle strikes fence sytsem.For example, if fence sytsem is rigidly fixed to position in impact event, may vehicle, its driver and the passenger of drift be caused serious injury and be destroyed.Therefore, having made many trials makes this additional risk as far as possible little.These methods comprise substantially uses following terminal part: these terminal parts are tapered facing up from ground so that the shock of central collision reduces effectively, and produce be similar to inclined-plane effect so that vehicle in impact event, fly out.Additive method comprises U.S. Patent No. 6,398,192(" ' 192 patents ") in disclosed disengaged cable terminations (BCT), vehicle decay terminal (VAT), the measure of SENTRE end, disengaged end (BET) and disengaged supporting strut.The terminal of many these classes, support member, end measure etc. can have been bought from different tissues.The HBA pillar being provided by Exodyne Technologies and Trinity Industries is provided its example, and with ' 192 patent in the pillar described structurally similarly depart from number supporting strut.
Referring again to Fig. 1 and Fig. 2, fence sytsem 100 comprises a terminal pillar 106 and seven supporting struts 104.This structure has together formed the terminal part 108 of fence sytsem 100.As shown in the figure, terminal part 108 is used as the end for conventional guard rail assembly 100 in a kind of preferred embodiment.
Although Fig. 1 illustrates some sizes and shows a kind of exemplary embodiment, it should be understood that these sizes of fence sytsem 100 can change according to the character of the roadside harm that will block.As shown in the figure, each terminal part 108 has the length of about 35 feet of magnitudes.But the size of terminal part 108 can change as required.In addition, the Len req of this system part can have the desired any convenient length of Highway Conditions.
As Fig. 1 illustrates best, terminal part 108 can be parallel to highway and install, or departs from certain angle and install from highway.In addition, although the terminal part 108 of an end of this guardrail safety system can abduction, in certain embodiments, the guardrail part 108 at this system opposite ends place is abduction not.For example, in the embodiment shown in fig. 1, upstream end part 108 is abductions, and downstream terminal part 108 abduction not.Particularly, upstream end part 108 is in linear substantially mode from highway abduction, and downstream terminal part 108 keeps being parallel to substantially highway.In other embodiments, two terminal parts 108 can be in a similar manner all abduction or abduction not.It will also be appreciated that in addition other are configured to terminal part 108.For example, the one or both in terminal part 108 can be mounted in parabola mode from highway abduction.Parabola abduction can realize by following manner: along with terminal part upstream advances, the skew of each supporting strut increases in the mode of parabola progression substantially.In the situation that comprising this feature, one or more terminal parts 108 are positioned to the mode departing from from highway abduction or inclination, can, by being convenient to make the vehicle that occurs to clash into move to contrary that side of this guardrail Yu highway when advancing, allow terminal part 108 execution control functions.
In specific embodiment at terminal part 108 with linear mode abduction, terminal part 108 can go back from the nonterminal part abduction of guardrail with the angle of about 6 to 7 degree.In a kind of specific embodiment, when the supporting strut 104 of terminal part 108 is opened with the intervals of about 75 inches, the downstream pillar 104 of terminal part 108 can be from about 9 inches of the tangent offset of the nonterminal part of guardrail.In this embodiment, towards the upstream termination of terminal part 108, advance, next four continuous supporting struts 104 can be from 19,29.25,39 and 48 inches of the tangent offsets of the nonterminal part of guardrail.In described this embodiment, terminal pillar 106 can be under guardrail beam 102, can be from approximately 47 inches of the tangent offsets of the nonterminal part of guardrail.
As Fig. 2 illustrates better, terminal part 108 comprises end measure 110.End measure 110 comprises planarization chute (chute) 112 and front shock plate 114.Particularly, end measure 110 and planarization chute 112 for example, are installed on the first pillar 104 by securing member (screw).The object of end measure 110 is that the Impact energy of vehicle is dissipated, and does not produce unsafe conditions, and these unsafe conditionss for example cause vehicle to topple or make guardrail 102 can as lance, sting the crew department of vehicle or vehicle.
Fig. 3 illustrates the exemplary embodiment of end measure 110 in more detail.As mentioned above, end measure 110 comprises planarization chute 112 and front shock plate 114.Planarization chute 112 and front shock plate 114 are connected to extruder 120.Extruder 120 surrounds the upstream portion of guardrail beam parts 102, and is comprised of the U-shaped raceway groove parts 122 on top and the U-shaped raceway groove parts 124 of bottom, and these parts are tightened together in the mode being spaced apart from each other by bar band plate 126.
Vertical distance between channel floor 122 and 124 is suitable distance, is adapted so that guardrail beam 102 is inserted in the raceway groove being produced by extruder 120.For example, in specific embodiment, in the situation that guardrail beam 102 comprises No. 12 W beam hurdle elements with about 12.25 inches of vertical sizes, the distance between the top of raceway groove parts 122 and the bottom of raceway groove 124 can be about 14 inches.
In specific embodiment, the planarization part 112 that is installed to extruder 120 can consist of four metal sheets.These four metal sheets can be cut and/or bend, and then weld together to form required structure.Or planarization part 112 also can be by forming more than four, or formed by the piece of metal that is cut and is bent into required structure.When planarization part 112 is assembled, planarization part 112 can form enclosed construction, and this structure has been held the terminal part of guardrail 102.
In an illustrated embodiment, planarization part 112 comprises three sections.The downstream part of planarization part 112 comprises throat 128.The vertical size of throat 128 is larger in downstream, and along with it approaches the upstream extremity of end measure 110 and reduces.For example, in the vertical size of specific embodiment Zhong， throat 128, it can be in downstream about 14 inches wide and at upstream extremity about 4.5 inches wide.The horizontal length of throat 128 can be within the scope of about 11 to 13 inches.
In specific embodiment, the gradient of lower limb 132 can be greater than top edge 130.Make the gradient increase of lower limb 132 can in knockout process, contribute to make 102 planarizations of guardrail beam.For example, in specific embodiment, top edge 130 can with respect to the horizontal plane be inclined upwardly with about 11 angles of spending, and lower limb 132 can be with respect to the horizontal plane downward-sloping with the angles of about 13 degree.In other embodiment, the gradient of top edge 130 and lower limb 132 can be substantially identical.Like this, in specific embodiment, top edge 130 and lower limb 132 can mirror images of each other symmetries.In other embodiments, top edge 130 can be aimed at horizontal plane (parallel with highway substantially) with the one in lower limb 132, and another one in top edge 130 and lower limb 132 tilts respectively up or down.
The upstream extremity of mid portion 134Cong throat 128 extends, and towards ground inclination.Particularly, mid portion 134 is configured to guardrail beam element 102 to be transitioned into subaerial height from the height (being 31 inches a kind of specific embodiment) that is suitable for vehicle impact to be redirected, be above the ground level level.Like this, the vertical distance that mid portion 134 is associated with throat 128 from downstream end extends to roughly ground level of upstream extremity.In specific embodiment, in the situation that the horizontal length of mid portion 134 is about 18.75 inches, mid portion can be with respect to the horizontal plane with the roughly angle inclination of 38 degree.
The third part of planarization part 112 comprises exit portion 136.Exit portion 136 is extended from the upstream extremity of mid portion 134.Exit portion 136 is arranged in Near Ground, and aims at substantially with ground.Exit portion 136 also forms raceway groove, and the terminal of guardrail beam element 102 is left planarization chute 112 through this raceway groove.In specific embodiment, the vertical size of the raceway groove in exit portion 136 can be about 4.5 inches (similar with the vertical size of mid portion 134 interior raceway grooves).It is constant substantially that the size of the raceway groove in exit portion 136 can keep, and makes the vertical size of downstream end raceway groove of exit portion 136 and the vertical size of the upstream extremity place raceway groove of exit portion 136 basic identical.In specific embodiment, the horizontal length of exit portion 136 can be about 5-7 inch.
As above, in conjunction with as described in Fig. 2, guardrail beam parts 102 are arranged in planarization part 112 and through its whole length and extend.Particularly, guardrail beam parts are sent in entrance 116 in the downstream end of planarization chute 112.Guardrail beam element 112 is crossed over the length of planarization chute 112, and at the upstream extremity place of planarization chute 112, leaves outlet 118.Like this, the terminal of W beam guardrail element is extended through this plat structure.Mid portion 134 in updrift side the slope towards ground make guardrail beam element 112 in the length of planarization part 112 gradually to landing ground transition.After leaving outlet 118, guardrail beam element 102 is secured to the terminal pillar 106 in ground level.
In the head on collision or inclination head on collision process of vehicle and front shock plate 114, end measure 110 can be shifted at downstream direction, and the downstream part of guardrail beam element 102 can be forced in the end measure 110 that displacement occurs.In such collision process, extruder 120, as guide, is directed to guardrail beam element in planarization part 112.Extruder 120 comprises guide 138, and these guides 138 have prevented in collision process along with extruder 120 moves and by the end scraping W beam guardrail element 102 of extruder 120 along the length of guardrail beam element 102.These guides 138 can adapt to any irregular place or the bulge in guardrail beam element 102, to guarantee that guardrail beam element 102 is sent in planarization part 112 rightly.
Along with end measure 110 is moved and the downstream part of guardrail beam element 102 is forced into planarization part 112 along guardrail beam element 102, guardrail beam element 102 is flattened at vertical direction.Various piece guardrail beam element 102, that leave from the outlet 118 of planarization part 112 is flattened and becomes that to look like the plate of four vertical stackings such.For example, in the situation that the vertical size of guardrail beam element 102 is about 12.25 inches, the throat 134 of planarization part 112, be about 4.5 inches, the vertical size of the planarization part of guardrail beam element 102 can be less than approximately 4.5 inches.Along with the generation of this planarization process, a large amount of energy are dissipated, and the vehicle that occurs to clash into is slowed down.
In order to help guardrail beam element 102 original flat to be connected to terminal supporting strut 106, the terminal of guardrail beam element 102 can be modified.Fig. 4 A and Fig. 4 B illustrate the guardrail beam element 200 of revising according to a kind of embodiment.As shown in Figure 4 A, guardrail beam element 200 comprises slot area 202 at the upstream extremity of the terminal part of guardrail beam element 200.In specific embodiment, slot area 202 comprises series of grooves, and these grooves are longitudinally arranged in guardrail beam element 200.In the guardrail test model of constructing similarly with guardrail safety system 100, proved that it is effective using three grooves.
With reference to the cross section of typical W beam guardrail 200 shown in figure 4B, can understand better according to the layout of slot area 202 middle slots of specific embodiment.Low ebb 204, between upper and lower peak 206, and is formed at the intersection of inclination wet end 208.Edge member 210 is positioned at outside each peak 206 in the horizontal.For these grooves, layout is very preferably to press close to each peak 206 and low ebb 204.Like this, in the embodiment shown in Fig. 4 A, the first and second grooves 212 are arranged in the first and second peaks 206.Three-flute 214 is arranged in low ebb 204.
The ability that groove 212 and 214 size should be enough to make the terminal of guardrail beam element 200 to be flattened is strengthened.In a kind of preferred embodiment, the whole vertical size of each peak 204 and low ebb 204 can be removed.Have been found that the effective size in the vertical direction for groove 212 is about 0.5 inch.Have been found that the effective size in the vertical direction for groove 214 is about 0.75 inch.Like this, in specific embodiment, groove 212 can have the width of 0.5 inch of magnitude and extend about 81-82 inch, groove 214 and can have the width of 0.75 inch of magnitude more and extend about 81-82 inch.But these sizes that provide are only example objects.Use any size can to groove 212 and 214, the ability that makes guardrail beam 200 in the whole terminal of guardrail beam element 200 be flattened to the plate of four vertical stackings is strengthened.
Although guardrail beam 102 can comprise W beam hurdle element, can usually expect, shown guardrail beam 102 is only the example of operable beam in fence sytsem.Other structure members that the various piece of guardrail beam 102 or guardrail beam 102 can comprise traditional W beam guardrail, three ripple guardrails, box-girder, cable wire or be suitable for when bumping, the vehicle of drift being redirected.It will also be appreciated that, the structure of any said elements in fence sytsem 100 and size can change as required.
Get back to Fig. 1 and Fig. 2, vehicle and the initial enemy of end measure 110 is clashed into and the initial displacement of end measure 110 on downstream direction after, the vehicle of shock and end measure 110 may be joined with one or more supporting struts 104.In the situation that being included in the supporting strut 104 that ground place surrender that be modified, steel (yielding) supporting strut clashed into, can when being subject to clashing into and bending earthward, guardrail beam element 102 be unclamped these supporting struts 104.Like this, in certain embodiments, the supporting strut 104 being clashed in collision process can be shifted, and they can not worked the mischief to the vehicle that occurs to clash into.Although guardrail beam 102 can unclamp from the supporting strut 104 being clashed into, guardrail beam element 102 parts that downstream, shock place occurs can keep its initial position substantially with respect to ground.In addition, because guardrail beam 102 in enemy's shock or break-in knockout process remains connected to terminal pillar 106, so guardrail beam 102 remains in tensioning state.This expanded guardrail safety system have acceptable can scope.
When in the Len req part at fence sytsem 100, fence sytsem 100 is subject to break-in shock, the tension force in guardrail beam 102 also can keep in this way.For example, when the vehicle impact of the parallel direction running of the downstream direction cardinal principle along with fence sytsem 100 is left highway and clashes into fence sytsem 100, the any supporting strut 104 that is subject to Vehicular impact can work when being subject to clashing into, and guardrail beam element 102 is unclamped.The supporting strut 104 of revising can bend earthward, and this supporting strut is shifted, and the vehicle clashing into is not worked the mischief.Due to the tension force having maintained in fence sytsem 102, so even at one or more supporting struts after guardrail beam element 102 unclamps, guardrail beam element 102 also continues to work that vehicle is redirected back on highway.
Fig. 5 A-5C, 6A-6C and 7A-7C illustrate the exemplary embodiment of the supporting strut that can be combined with the fence sytsem 100 of Fig. 1.Particularly, Fig. 5 A-5C illustrates exemplary reduction supporting strut, and this pillar can be used as the first supporting strut 500(after terminal supporting strut 106 in the terminal part 108 of guardrail safety system 100).Fig. 6 A-6C illustrates exemplary reduction supporting strut 600, and this pillar can be used in the whole terminal part 108 of guardrail safety system 100 and other parts.Fig. 7 A-7C illustrates standard circuit pillar 700, and this pillar can be used in some part of guardrail safety system 100.Although Fig. 5 is A-5C, 6A-6C and 7A-7C illustrate respectively three kinds of distinguishing embodiment, adopted identical label to identify public parts in these three kinds of embodiment.
As shown in the figure, supporting strut 500,600 and 700 comprises elongated continuous structure parts, and is respectively the flange configuration of normal width.Each supporting strut comprises two flanges 502, and these flanges are parallel substantially each other, and relative to each other spaced apart.Junction plate (web) 504 forms connection between flange 502.In a preferred embodiment, flange 502 comprises identical substantially screw 506 and excision district 508 structures therein.
For the wide flange shape as guardrail pillar, cross section is formed the shape that is similar to letter " H " conventionally.This cross section has two major axis for bending." weak " axis is often referred to and through junction plate, extends and vertical with these flanges central axis." by force " axis be often referred to perpendicular to junction plate and with the parallel plane central axis of flange.For the conventional mounting facility of guardrail, weak axis is lateral connecting line and extending substantially.Strong axis extends along road substantially.
In the embodiment shown in Fig. 5 A-5C, 6A-6C and 7A-7C, wide flange is W6 * 8.5 of standard, and it is common to the supporting strut manufacture of guardrail installation.It is dark that the wide flange in W6 * 8.5 of standard can have six inches of nominal, and the weight of every foot is eight and half.In fact, an advantage of the invention is and existing standard device can be used for again manufacturing, revise and supporting strut 500 is installed, and mustn't revise significantly equipment.Those skilled in the art can expect, can use the wide flanged beam of many different sizes.For example, also can use six inches of dark, per inch to weigh nine and half this wide flange of wide flange and be called the wide flange in W6 * 9.But the wide flange of the wide flange in W6 * 9 and W6 * 8.5 is considered to be equal in transaction.The meaning of term " the wide flange in W6 * 8.5 " and " the wide flange in W6 * 9 " refers to that those skilled in the art can be called overall dimension and the structure of the guardrail pillar of " W6 * 9 ".In addition, it will be understood by those skilled in the art that other titles for wide flange include but not limited to " I beam ", " H beam ", " W beam ", " S beam ", " M beam ", that is, can replace " beam " with term " shape ".
In specific embodiment, supporting strut 500,600 and 700 has the length within the scope of approximately 72 to 73 and 3/8 inches, and comprises 510He bottom, top 512.Middle part 514 couples together 510Yu bottom, top 512.Top 510 comprises two screws 506, and they are for example suitable for holding connector, so that guardrail beam (guardrail beam 102) is arranged on this supporting strut.Bottom 512 is suitable for being arranged on below slope, road (grade), as a part for guardrail support system.
Screw 506 comprises standard construction, and this structure can be arranged on widely used guardrail beam on corresponding supporting strut.Substantially, screw 506 is aimed at guardrail Liang center, and guardrail Liang center is maintained to above about 30 inches of ground.But within the scope of the invention, the number of screw 506, size, position and structure can be modified to a great extent.
Supporting strut 500 and 600 is modified to include " weak " axis W and the axis S of " by force " separately.Supporting strut 500 and 600 is installed along road under normal circumstances, make weak axis W substantially perpendicular to magnitude of traffic flow direction, and strong axis S is parallel to magnitude of traffic flow direction substantially.Therefore, supporting strut 500 and 600 conventionally can tolerate remarkable shock for the strong axis S shock of automobile to run at high speed (for example with) and can obviously not lose efficacy.But supporting strut 500 and 600 is designed so that more easily to lose efficacy in response to the shock for weak axis W wittingly.In other words, supporting strut 500 and 600 shows enough intensity in the horizontal, and shows in the vertical enough low intensity.Therefore,, if vehicle strikes end measure 110 in " end " mode, supporting strut 500 and 600 for example,, by area failures (warpage), makes vehicle to the shock of follow-up supporting strut, slow down along with it simultaneously.But, if vehicle along the surface of guardrail beam 102 and angularly impact with it fence sytsem 100, supporting strut 500 and 600 will provide enough resistances (intensity), by vehicle be redirected to along with guardrail beam 102 parallel path substantially.
Supporting strut 500 and 600 mid portion 514 comprise two excision districts 508, and these excision districts are constructed such that supporting strut further weakens about weak axis W, thereby more easily because vehicle shock in the direction lost efficacy.Excision district 508 is positioned at mid portion 514, so that supporting strut weakens about the contiguous weak axis W in (when being mounted) and ground.The supporting strut that can adapt to so roughly at place, ground lost efficacy, make supporting strut 500 and 600 can make progress from failpoint " folding " go back.Because bottom 512 is at below ground, so in knockout process, expect that the bottom 512 of ground or supporting strut can be obviously not crooked.
In an illustrated embodiment, because excision district 508 is created in roughly ground wittingly, locate, screw 506 center is created in above 30 inches of places, ground wittingly, so screw 506 results from excision place, 30 inches of 508 tops, district.It will be understood by those skilled in the art that within the scope of the invention, size, structure, position and number and their relations each other in screw, excision district can be revised to a great extent.Within the scope of the invention, overall length these supporting struts and their top, bottom and mid portions separately also can be revised to a great extent.For example, in other embodiments, excision district 508 can result from below ground or top.The degree of depth in excision district 508 below ground should be no more than following amount: described amount can hinder supporting strut and lose efficacy near the position in excision district 508 or the position in excision district 508.At certain depth below ground, soil around (or other) material can be enhanced to the bottom of supporting strut 512 degree that can not allow that this inefficacy occurs.
The excision district 508 on the ground height of side should not surpass following point: at described some place, supporting strut will lose efficacy at 508 places, excision district, and side leaves " broken end " on the ground, this " broken end " may tangle vehicle and otherwise cause excessive injury and/or excessively destroy.For the redirected effect of the fence sytsem at supporting strut work place, this broken end may be harmful to.
The vertical size in excision district 508 is to limit according to the horizontal dimension in excision district 508.For example, the ratio of the vertical size in any specific excision district can be equal to or less than three times of horizontal dimension.Or this ratio can be limited in the twice of horizontal dimension.In an illustrated embodiment, this ratio is 1:1, because excision district 508 is the circular open in supporting strut substantially.The vertical size in excision district is less, and designer just can more accurately stipulate that failpoint is along the vertical length of supporting strut 500 and 600.
According to instruction of the present invention, for the designer of supporting strut 500 and 600, can there is the structure in various excisions district 508.For example, excision district 508 can not be circular open, but comprises square, rectangle, triangle, oval west, rhombus or in fact any other geometrical construction, and still obtains the part or all of advantage described in the application.
Within the scope of the invention, the horizontal direction of excision district 508 in flange 502 also can change significantly.In the embodiment shown in Fig. 5 A-5C and Fig. 6 A-6C, about one inch away from center line of flange 508 be of the position of center line in excision district 508.But in alternative embodiment, the position in excision district 508 can from these edges more close to, or farther from these edges.In one embodiment, excise 508 and can be constructed such that they extend to the edge of flange always, thereby exist and disconnect the material starting from edge.Like this, can adopt traditional drift to form to extend in edge the semicircle opening of flange edge.
Or, also can adopt from the outward flange of flange and start and the sawing mode that extends internally forms excision district 508.Like this, sawing mode forms the weak axis along supporting strut the starting point of possibility failpoint.Except sawing, similarly structure also can comprise groove, and the longest yardstick in groove passes through flange and horizontal-extending.Such groove can start or end at the edge of flange, or is otherwise arranged in flange material completely.
As mentioned above, Fig. 5 A-5C specifically illustrates the guardrail supporting strut 500 that can be used as the first supporting strut (after terminal supporting strut 106) in fence sytsem 100.For example, after end measure (end measure 110) is covered to guardrail safety system 100, supporting strut can be modified with support tip measure 110.Particularly, supporting strut 500 comprises additional screw 520 and 522, for end measure 110 is connected to supporting strut 500.In concrete illustrated embodiment, screw 520 and 522 is slightly less than screw 506 and excision district 508.But the size that provided screw 520 and 522 are provided is example object, and can change as required that end measure 110 is connected to supporting strut 500.Different from supporting strut 500, supporting strut 600 and 700 does not comprise screw 520 and 522, is therefore more suitable for being used in the part of end measure 110 not being carried out directly supporting of fence sytsem 100.
Although above describe and in manual illustrated the wide flanges in W6 * 8.5, it will be appreciated by those skilled in the art that, can to the guardrail supporting strut of in fact any size, weaken as mentioned above.The several factors that will consider when the size of supporting strut, weight and structure are just determined the correct position that excises district, to allow permission when maintaining sufficient intensity along strong axis to surrender along weak axis, thereby are redirected the vehicle clashing into.In addition, for example, although may wish that at least a portion of these supporting struts in guardrail safety system 100 comprises the supporting strut (supporting strut 500 and 600 of Fig. 5 A-5C) of reduction, but supporting strut also can comprise the supporting strut of traditional unmodified, or other structure members that are suitable for guardrail beam to support.Fig. 7 A-7C illustrates the supporting strut of such unmodified.Supporting strut 700 does not comprise excision district 508, and can comprise the linear pillar (for example W6 * 8.5 pillar of unmodified) of standard or have any other supporting strut of suitable dimension, weight and structure.
Although guardrail beam element is unclamped when some supporting strut can be formed at Vehicular impact, even if may wish that terminal supporting strut also remains connected to guardrail beam after enemy's shock or break-in shock.Fig. 8 A and Fig. 8 B illustrate the exemplary embodiment of the terminal supporting strut 800 that can use in conjunction with the fence sytsem 100 of Fig. 1.With reference to figure 1, terminal supporting strut 800 is the first terminal supporting struts at terminal part 108 upstream extremity places.Fig. 8 A is the lateral view of terminal supporting strut 800, and Fig. 8 B is the elevation of same terminal supporting strut 800.
In specific embodiment, terminal supporting strut 800 is releasably attachable to for example guardrail beam 102 of guardrail beam 102(), and actual grappling is provided to guardrail beam 102, with the tensile load on guardrail beam 102, react, along the length direction of guardrail beam 102, the vehicle of Transverse Impact is redirected.With various elements realize guardrail beam 102 be connected to terminal pillar 800, make when fence sytsem 100 is subject to vehicle impact with enemy is clashed into or break-in types of impacts is carried out impact, guardrail beam 102 remains connected to terminal supporting strut 800.Like this, even if guardrail beam element also keeps being supported with tensioning state after such shock.But when fence sytsem 100 is subject to vehicle impact along reciprocal impact, the tensioning connected mode of guardrail beam 102 will be unclamped from terminal supporting strut 800, to prevent vehicle unstability and excessive vehicle deceleration.
In an illustrated embodiment, terminal supporting strut 800 comprises the structure member 802 of I beam construction.Structure member 802 comprises the pair of flanges 804 being interconnected by center connecting plate 806.In presently preferred embodiment, beam parts 802 comprise W6 * 15 steel strut parts.A pair of rectangular side panels 808 is fixed to the two opposite sides of structure member 802.Preferably, side plate 808 is fastened to each flange 804 by welding.
Connector assembly is used to structure member 802 to be connected to guardrail beam element.Enemy that connector assembly is constructed such that at vehicle clash into or break-in knockout process in maintain being connected between the terminal part of this structure member and guardrail beam.But this connector assembly is formed at and unclamps this connection in reverse knockout process.In specific embodiment, connector assembly comprises a plurality of stacking rectangular slabs, and these rectangular slabs are the terminal part with receiving fence sytsem by degree standard.For example, connector assembly can comprise the stacking of three plates: flange plate 810, retainer plate 816 and washer plate 824.
V-shaped groove 812 center is along the horizontal width of flange plate 810, and vertically length is approximately 1 inch, approximately 1 and 3/4 inch of horizontal width.But, described and shown in flange plate 810 sizes be only used to example object.Although shown size may be suitable in the situation that structure member 802 comprises W6 * 15 steel strut parts, the size of flange plate 810 can change, and can depend on size and the scale of structure member 802.
Get back to Fig. 8 B, it is adjacent with flange plate 810 that retainer plate 816 is arranged to.Similar with flange plate 810, retainer plate 816 is preferably and is integrally formed part.As illustrated best in Fig. 9 B, retainer plate 816 comprises the rectangular slab with circular open 818, the top edge 820 of the contiguous retainer plate 816 of this opening.In an illustrated embodiment, retainer plate 816 has the approximately 3 not only vertical length of 1/8 inch and the horizontal widths of about 5 but also 3/8 inches.Opening 818 center is along the horizontal width of retainer plate 816, about 7/8 inch away from top edge 820 of retainer plate 816 be, center.U-shaped opening 818 can have the diameter of approximately 1 and 1/4 inch.But, described and shown in retainer plate 816 sizes be only used to example object.Although shown size may be suitable in the situation that structure member 802 comprises W6 * 15 steel strut parts, the size of retainer plate 816 can change, and can depend on size and the scale of structure member 802 and flange plate 810.
Get back to Fig. 8 B, it is adjacent with retainer plate 816 that washer plate 824 is arranged to.Similar with flange plate 810 and retainer plate 816, washer plate 824 is preferably and is integrally formed part.As illustrated best in Fig. 9 C, washer plate 824 comprises the rectangular slab with U-lag 826, and this U-lag is in the center of the top edge 828 of washer plate 824.In an illustrated embodiment, washer plate 824 has the approximately 4 not only vertical length of 1/8 inch and the horizontal widths of about 5 but also 1/2 inches.As illustrated best in Fig. 8 B, the thickness of washer plate 824 can be about 1/2 inch.
As mentioned above, the object of terminal supporting strut 800 is that guardrail beam 108 is fastened on to tensioning state.Figure 10 A and Figure 10 B illustrate exemplarily guardrail beam 1000 are connected to terminal supporting strut (for example terminal supporting strut 800 shown in Fig. 8 A and 8B) with tensioning state.Particularly, the fluting guardrail beam 1000 of pressurized is connected to junction plate 1002, and guardrail beam 1000 is similar to above in conjunction with those guardrail beams described in Fig. 1, Fig. 2 and Fig. 4 A-4B.
In an illustrated embodiment, junction plate 1002 comprises a pair of screw 1004, and these screws can be aimed at a pair of similar screw (not shown) that pressurized is slotted in the terminal of guardrail beam 1000.Pair of screws 1006 can be screwed into through the similar size screw (not shown) of aiming at screw 1004 in screw 1004 and guardrail beam 1000.Nut 1008 can be guaranteed through the connection separately of the screw 1006 of junction plate 1002 and guardrail beam 1000.In specific embodiment, the screw in screw 1004 and guardrail beam 1000 can have the diameter of approximately 7/8 inch of magnitude.In such embodiments, screw 1006 can comprise 2 and 1/2 * 3/4 " GR.5 screw.But be understood that these sizes only provide as example.Can use screw and the screw of any suitable dimension that guardrail beam 1000 is fastened to junction plate 1002.
The existence of nut 836 has prevented that cable 1010 is from opening retraction, and these openings are by the V-arrangement excision district 814 of flange plate 810 and the U-shaped of washer plate 824, to excise district 826 to form.Because the opening of retainer plate 816 comprises unlimited excision district in the circular open 818 of sealing rather than the edge of retainer plate 816, so that retainer plate 816 has been guaranteed threaded rod 1010 is in place suitably.Retainer plate 816 is returned threaded rod 1010 and to the tensioning state of terminal pillar 800, is connected the intensity of increase.Washer plate 824, as the packing ring between screw 834 and retainer plate 816, has also increased intensity to this connection.
In enemy's shock that the fence sytsem that comprises above-mentioned feature is carried out or break-in knockout process, Fig. 8 A-8B, Fig. 9 A-9C make guardrail beam 1010 be connected and can keep complete with the tensioning of terminal supporting strut 800 with the assembly described in Figure 10 A-10B.Because guardrail beam 1010 remains on tensioning state, so guardrail beam 1010 can be redirected vehicle impact.Can eliminate the post warpage of this system, and the eccentric vehicle clashing into can be stayed in moderating process in this system longer.
On the contrary, when this fence sytsem is oppositely clashed in vehicle edge, the tensioning connection status of guardrail beam 1010 can be released.For example, oppositely shock can make top edge 820 directly over circular open 818, retainer plate 816 be subject to shearing (shear).Like this, threaded rod 1010 departs from from the opening being formed by V-arrangement excision district 812, U-shaped excision district 826 and circular open 818.Because the tensioning connection status of guardrail beam 1000 is released, thus guardrail beam 1000 can disintegrate with controlled manner, to prevent vehicle unstability or excessively to slow down.
For oppositely further helping to unclamp this tensioning connection status in knockout process, can terminal supporting strut be connected to the first adjacent supporting strut with the pole (strut) of revising.Such pole is represented by label 140, and illustrates in more detail in Figure 11 A and Figure 11 B in Fig. 2.In an illustrated embodiment, pole 140 comprises longitudinal beam parts 1112, and these parts are modified to include pole plate 1114.Longitudinal beam parts 1112 can comprise any suitable cross sectional shape.The length of longitudinal beam parts 1112 is suitable for terminal supporting strut 106 to be connected with next adjacent supporting strut 104.In specific embodiment, longitudinal beam parts 1112 can comprise C raceway groove parts, and these C raceway groove parts have the width of approximately 6 inches of magnitudes and the degree of depth of approximately 2 inches of magnitudes.
As illustrated best in Figure 11 B, pole plate 1114 is preferably and is integrally formed part, by welding manner, is fastened to longitudinal beam parts 1112.Pole plate 1114 comprises rectangular slab, and this rectangular slab has U-shaped excision district 1116 in the center of the top edge 1118 of pole plate 1114.In an illustrated embodiment, pole plate 1114 has the horizontal dimension of approximately 10 inches and the vertical size of approximately 8 inches.The thickness of pole plate 1114 can be about 1/4 inch.The center of U-lag 1116 is along the vertical direction of pole plate 1114, and vertically size is about 1 and 1/2 inch, and horizontal dimension is about 5 and 1/2 inches.The fillet bottom 1120 of U-lag 1116 has the diameter of approximately 1 and 1/2 inch.But described and shown in the size of pole plate 1114 be only used to example object and provide.The size of pole plate 1114 and longitudinal beam parts 1112 can change.
When vehicle clashes into guardrail girder system system along direction, pole 1112 and pole plate 1114 can be so that unclamp the tensioning connection status between guardrail beam and terminal supporting strut.The port of export of the contiguous planarization part 112 in position of pole plate 1114.Pole plate 1114 is as slope, so that be connected to the threaded rod of guardrail beam from V-arrangement excision district 814, the opening 818 of retainer plate 816 and the U-shaped of washer plate 824 excision district's 826 liftings of flange plate 810.Due to the tensioning connection status of having unclamped in guardrail beam 1000, pole 1112 and pole plate 1114 have prevented the unstability of vehicle impact or have excessively slowed down.
As mentioned above, Figure 10 A and Figure 10 B illustrate the exemplary tensioning connection of guardrail beam and threaded rod.Figure 12 illustrates and can be used for guardrail beam to be connected to the alternative embodiment of the tensioning connection of terminal pillar.In an illustrated embodiment, the guardrail beam 1200 of fluting can be revised similarly with the guardrail beam 200 of Fig. 4 A.The guardrail beam 1200 of fluting is modified at terminal 1202 places, and is connected to cable bar 1204.In specific embodiment, the guardrail beam 1200 of fluting can be connected to a pair of cable bar 1204.
The technological merit of specific embodiments of the invention comprises the measure of guardrail beam end, the compression of this end measure by the W beam guardrail element Impact energy that dissipated.Particularly, by making the vehicle impact required a part of guardrail planarization of slowing down, the measure of guardrail end can dissipate the Impact energy of the vehicle with the collision of guardrail end.Therefore can being this end measure, another advantage force W beam guardrail element, through plat structure ，Gai circle, guardrail is squeezed into comparatively smooth plate.Different from system before this, this W beam guardrail element can be flattened at vertical direction rather than horizontal direction.
Additional advantage can be: for the end of W beam guardrail element is connected to terminal supporting strut, can provide tensioning, resistant connected mode.Provide the system element that tensioning is connected can make guardrail beam can keep fastening after enemy's shock or break-in shock to guardrail beam and terminal supporting strut.Like this, this system can remain on tensioning state in this knockout process of two types.But another advantage can be: when system is subject to oppositely clashing near terminal, tensioning state can be released.The tensioning state that unclamps guardrail element for reverse shock has prevented vehicle unstability and has excessively slowed down.
Although describe the present invention by several embodiment, it may occur to persons skilled in the art that variations and modifications form.Will be understood that the present invention contained these variations and the modification dropping within the scope of current claims.For example, feature mentioned above can be by individually and/or be bonded to each other and use, or be combined with other Change In Design forms.
Claims (37)
1. a terminal part for guardrail safety system, comprising:
The terminal part of guardrail beam, comprises upstream extremity and downstream, and at the upstream extremity place of described terminal part, the terminal part of described guardrail beam is from the first vertical high inclination that is suitable for drift vehicle to be redirected to the subaerial second vertical height;
A plurality of supporting struts, it is installed with the contiguous highway of mode being spaced apart from each other, and described a plurality of supporting struts are connected to the terminal part of described guardrail beam; With
Terminal supporting strut, its upstream extremity place in the terminal of most end is close to described highway and installs, described terminal supporting strut is by resistant, the connected mode of tensioning and be connected to the upstream extremity of the terminal part of described guardrail beam, described resistant, the connected mode of tensioning maintains tensioning state in the terminal part of described guardrail beam, in the enemy's shock or break-in knockout process carrying out at vehicle, described resistant between described terminal supporting strut and described guardrail beam, the connection of tensioning is maintained, and in reverse knockout process, described resistant between described terminal supporting strut and described guardrail beam, the connection of tensioning is released.
2. terminal part according to claim 1, wherein, the terminal part of described guardrail beam is arranged essentially parallel to highway.
3. terminal part according to claim 1, wherein, the terminal part of described guardrail beam is in the upstream extremity Chu Cong of described guardrail beam highway abduction.
4. terminal part according to claim 3, wherein, described abduction is parabola mode substantially.
5. terminal part according to claim 3, wherein, described abduction is linear substantially.
6. terminal part according to claim 1, wherein, described guardrail beam parts comprise is with ripply W beam in the vertical, and described W beam has upper and lower peak and these high peak-to-peak low ebbs.
7. terminal part according to claim 6, wherein, the terminal part of described guardrail beam parts is modified to include slot area, described slot area comprises one group of three groove, in each in described upper and lower peak and these high peak-to-peak low ebbs of these grooves, longitudinally extend, described slot area has increased the ability that the terminal part of described guardrail beam parts is flattened.
8. terminal part according to claim 7, wherein, the upstream extremity of described guardrail beam parts is flattened to the plate of four vertical stackings.
9. terminal part according to claim 1, wherein, the upstream extremity of described guardrail beam parts is connected to threaded rod, when described vehicle carries out enemy's shock or break-in shock, described threaded rod and described connected mode resistant, tensioning cooperate to maintain tensioning state in the terminal part at described guardrail beam.
10. terminal part according to claim 1, also comprise impact head, described impact head is connected to the first support member that is arranged in described terminal supporting strut downstream, and described impact head can flatly be shifted the Impact energy that dissipates in head on collision process on downstream direction.
11. terminal parts according to claim 1, wherein, at least one in described a plurality of supporting struts comprises modified supporting strut, described modified supporting strut comprises:
Bottom, it is for being arranged on below the slope, road that described highway is adjacent;
Middle part, it is substantially adjacent with slope, described road, described middle part comprises weakening part, and described weakening part can make described supporting strut weaken about first axle, and substantially do not change described supporting strut about with the behavior of the second vertical axis substantially of described first axle; With
Top, it is releasably attachable to the terminal part of described guardrail beam.
12. terminal parts according to claim 1, wherein, described connection resistant, tensioning comprises connector assembly, described connector assembly comprises a plurality of plates, these plates are stacking adjacent to each other, at least one in described a plurality of plate is fixed to the end of described terminal supporting strut, and described a plurality of plates comprise:
The first plate, it comprises the rectangular slab with V-arrangement excision district, described V-arrangement excision district is at the top edge of described rectangular slab;
The second plate, it comprises the rectangular slab with circular open; With
The 3rd plate, it comprises the rectangular slab with U-shaped excision district, described U-shaped excision district is at the top edge of described the 3rd plate; And
Wherein, when described the first plate, described the second plate and described the 3rd plate are when stacking adjacent to each other, described V-arrangement excision district, described circular open and described U-shaped excision district are aligned with each other.
The terminal part of 13. 1 kinds of guardrail safety systems, comprising:
The terminal part of guardrail beam;
Terminal supporting strut, it is connected to the upstream extremity of the terminal part of described guardrail beam, and described terminal supporting strut comprises:
The structure member with longitudinal axis, described structure member is for being arranged on below the slope, road that highway is adjacent;
Connector assembly, it acutangulates the terminal part of described guardrail beam to be connected to described structure member with respect to the longitudinal axis of described structure member, described connector assembly comprises opening, and the upstream extremity of the terminal part of described guardrail beam is arranged through described opening;
Wherein, the vehicle that is connected between described structure member and the terminal part of described guardrail beam carries out being maintained in enemy's shock or break-in knockout process, and released in reverse knockout process.
14. end measures according to claim 13, wherein, described structure member comprises the pair of flanges being interconnected by center connecting plate.
15. end measures according to claim 13, wherein, described connector assembly comprises a plurality of plates, these plates are stacking and arrange with acute angle with respect to the longitudinal axis of described structure member adjacent to each other, at least one in described a plurality of plate is fixed to the end of described structure member, and each in described a plurality of plates comprises opening.
16. end measures according to claim 15, wherein, described a plurality of plates comprise:
The first plate, it comprises the rectangular slab with V-arrangement excision district, described V-arrangement excision district is at the top edge of described rectangular slab;
The second plate, it comprises the rectangular slab with circular open; With
The 3rd plate, it comprises the rectangular slab with U-shaped excision district, described U-shaped excision district is at the top edge of described the 3rd plate; And
Wherein, when described the first plate, described the second plate and described the 3rd plate are when stacking adjacent to each other, described V-arrangement excision district, described circular open and described U-shaped excision district are aligned with each other.
17. end measures according to claim 13, also comprise a plurality of supporting struts, and these supporting struts are installed with the contiguous highway of mode being spaced apart from each other, and described a plurality of supporting struts are connected to the terminal part of described guardrail beam.
18. end measures according to claim 17, wherein, the terminal part of described guardrail beam is arranged essentially parallel to described highway.
19. terminal parts according to claim 17, wherein, the terminal part of described guardrail beam is in the upstream extremity Chu Cong of described guardrail beam highway abduction.
20. terminal parts according to claim 19, wherein, described abduction is parabola mode substantially.
21. terminal parts according to claim 19, wherein, described abduction is linear substantially.
22. terminal parts according to claim 13, wherein, described guardrail beam parts comprise is with ripply W beam in the vertical, and described W beam has upper and lower peak and these high peak-to-peak low ebbs.
23. terminal parts according to claim 22, wherein, the terminal part of described guardrail beam parts is modified to include slot area, described slot area comprises one group of three groove, in each in described upper and lower peak and these high peak-to-peak low ebbs of these grooves, longitudinally extend, described slot area has increased the ability that the terminal part of described guardrail beam parts is flattened.
24. terminal parts according to claim 22, wherein, the upstream extremity of described guardrail beam parts is flattened to the plate of four vertical stackings.
25. terminal parts according to claim 13, wherein, the upstream extremity of described guardrail beam parts is connected to threaded rod, and described threaded rod is through opening in described connector assembly and is fastening.
The terminal part of 26. 1 kinds of guardrail safety systems, comprising:
The terminal part of guardrail beam, comprises upstream extremity and downstream, and at the upstream extremity place of described terminal part, the terminal part of described guardrail beam is from the first vertical high inclination that is suitable for drift vehicle to be redirected to the subaerial second vertical height;
A plurality of supporting struts, it is installed with the contiguous highway of mode being spaced apart from each other, and described a plurality of supporting struts are connected to the terminal part of described guardrail beam; With
Terminal supporting strut, it is connected to the upstream extremity of the terminal part of described guardrail beam, and described terminal supporting strut comprises:
The structure member with longitudinal axis, described structure member is for being arranged on below the slope, road that described highway is adjacent;
Connector assembly, it acutangulates the terminal part of described guardrail beam to be connected to described structure member with respect to the longitudinal axis of described structure member;
Wherein, the vehicle that is connected between described structure member and the terminal part of described guardrail beam carries out being maintained in enemy's shock or break-in knockout process, and released in reverse knockout process.
27. terminal parts according to claim 26, wherein, the terminal part of described guardrail beam is arranged essentially parallel to described highway.
28. terminal parts according to claim 26, wherein, the terminal part of described guardrail beam is in the upstream extremity Chu Cong of described guardrail beam highway abduction.
29. terminal parts according to claim 28, wherein, described abduction is parabola mode substantially.
30. terminal parts according to claim 28, wherein, described abduction is linear substantially.
31. terminal parts according to claim 26, wherein, described guardrail beam parts comprise is with ripply W beam in the vertical, and described W beam has upper and lower peak and these high peak-to-peak low ebbs.
32. terminal parts according to claim 31, wherein, the terminal part of described guardrail beam parts is modified to include slot area, described slot area comprises one group of three groove, in each in described upper and lower peak and these high peak-to-peak low ebbs of these grooves, longitudinally extend, described slot area has increased the ability that the terminal part of described guardrail beam parts is flattened.
33. terminal parts according to claim 31, wherein, the upstream extremity of described guardrail beam parts is flattened to the plate of four vertical stackings.
34. terminal parts according to claim 26, wherein, the upstream extremity of described guardrail beam parts is connected to threaded rod, and when described vehicle carries out enemy's shock or break-in shock, described threaded rod and the cooperation of described connector assembly are to maintain tensioning state in the terminal part at described guardrail beam.
35. terminal parts according to claim 26, also comprise impact head, described impact head is connected to the first support member that is arranged in described terminal supporting strut downstream, and described impact head can flatly be shifted the Impact energy that dissipates in head on collision process on downstream direction.
36. terminal parts according to claim 26, wherein, at least one in described a plurality of supporting struts comprises modified supporting strut, described modified supporting strut comprises:
Bottom, it is for being arranged on below the slope, road that described highway is adjacent;
Middle part, it is substantially adjacent with slope, described road, described middle part comprises weakening part, and described weakening part can make described supporting strut weaken about first axle, and substantially do not change described supporting strut about with the behavior of the second vertical axis substantially of described first axle; With
Top, it is releasably attachable to the terminal part of described guardrail beam.
37. terminal parts according to claim 26, wherein, described connector assembly comprises a plurality of plates, and these plates are stacking adjacent to each other, and at least one in described a plurality of plates is fixed to the end of described structure member, and described a plurality of plates comprise:
The first plate, it comprises the rectangular slab with V-arrangement excision district, described V-arrangement excision district is at the top edge of described rectangular slab;
The second plate, it comprises the rectangular slab with circular open; With
The 3rd plate, it comprises the rectangular slab with U-shaped excision district, described U-shaped excision district is at the top edge of described the 3rd plate; And
Wherein, when described the first plate, described the second plate and described the 3rd plate are when stacking adjacent to each other, described V-arrangement excision district, described circular open and described U-shaped excision district are aligned with each other.
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US12/115,213 | 2008-05-05 | ||
| US12/115,194 | 2008-05-05 | ||
| US12/115,213 US7694941B2 (en) | 2008-05-05 | 2008-05-05 | Guardrail safety system for dissipating energy to decelerate the impacting vehicle |
| US12/115,194 US7883075B2 (en) | 2008-05-05 | 2008-05-05 | Tension guardrail terminal |
| CN2009801261792A CN102084065B (en) | 2008-05-05 | 2009-05-05 | Guardrail safety system for dissipating energy to decelerate the impacting vehicle |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009801261792A Division CN102084065B (en) | 2008-05-05 | 2009-05-05 | Guardrail safety system for dissipating energy to decelerate the impacting vehicle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103526705A true CN103526705A (en) | 2014-01-22 |
| CN103526705B CN103526705B (en) | 2016-01-06 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310322992.5A Expired - Fee Related CN103526705B (en) | 2008-05-05 | 2009-05-05 | For dissipation energy with the guardrail safety system making vehicle impact slow down |
| CN2009801261792A Expired - Fee Related CN102084065B (en) | 2008-05-05 | 2009-05-05 | Guardrail safety system for dissipating energy to decelerate the impacting vehicle |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009801261792A Expired - Fee Related CN102084065B (en) | 2008-05-05 | 2009-05-05 | Guardrail safety system for dissipating energy to decelerate the impacting vehicle |
Country Status (15)
| Country | Link |
|---|---|
| EP (1) | EP2313560B1 (en) |
| KR (1) | KR20110004896A (en) |
| CN (2) | CN103526705B (en) |
| AU (1) | AU2009244438C1 (en) |
| CA (2) | CA2940944C (en) |
| CL (1) | CL2009001078A1 (en) |
| DK (1) | DK2313560T3 (en) |
| HK (1) | HK1191073A1 (en) |
| IL (2) | IL209183A (en) |
| MX (3) | MX339695B (en) |
| NO (1) | NO2313560T3 (en) |
| NZ (1) | NZ589467A (en) |
| PL (1) | PL2313560T3 (en) |
| WO (1) | WO2009137483A1 (en) |
| ZA (1) | ZA201008503B (en) |
Cited By (1)
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|---|---|---|---|---|
| CN110106811A (en) * | 2019-05-13 | 2019-08-09 | 四川轻化工大学 | A kind of stress self supporting type protective fence for highway abrupt slope |
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| WO2010139027A1 (en) * | 2009-06-05 | 2010-12-09 | Saferoads Pty Ltd | An end terminal member |
| US8905382B2 (en) | 2011-02-01 | 2014-12-09 | Energy Absorption Systems, Inc. | End terminal |
| CN106988248B (en) * | 2017-05-17 | 2022-12-13 | 西北师范大学 | Intelligent isolation device for forming tidal lane and using method |
| KR102007769B1 (en) * | 2017-09-01 | 2019-08-06 | 한국도로공사 | Reinforcing unit for transition section of roadway |
| KR101898720B1 (en) * | 2017-11-24 | 2018-09-13 | 공주대학교 산학협력단 | Fixing block with expedite installation pile cap |
| EP4375421A2 (en) | 2018-12-07 | 2024-05-29 | Sicking Safety Systems LLC | Guardrail terminal |
| CN110159051B (en) * | 2019-04-29 | 2024-05-14 | 国网甘肃省电力公司建设分公司 | Power transformation framework |
| CN115404804B (en) * | 2022-09-02 | 2023-10-03 | 湖南金宝涟交通设施工程股份有限公司 | Impact guiding type high-speed guardrail |
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- 2009-05-05 MX MX2013011074A patent/MX339695B/en unknown
- 2009-05-05 CN CN201310322992.5A patent/CN103526705B/en not_active Expired - Fee Related
- 2009-05-05 PL PL09743469T patent/PL2313560T3/en unknown
- 2009-05-05 EP EP09743469.0A patent/EP2313560B1/en active Active
- 2009-05-05 CL CL2009001078A patent/CL2009001078A1/en unknown
- 2009-05-05 DK DK09743469.0T patent/DK2313560T3/en active
- 2009-05-05 MX MX2010012170A patent/MX2010012170A/en active IP Right Grant
- 2009-05-05 MX MX2016003949A patent/MX361970B/en unknown
- 2009-05-05 NO NO09743469A patent/NO2313560T3/no unknown
- 2009-05-05 CA CA2940944A patent/CA2940944C/en active Active
- 2009-05-05 CA CA2725225A patent/CA2725225C/en active Active
- 2009-05-05 CN CN2009801261792A patent/CN102084065B/en not_active Expired - Fee Related
- 2009-05-05 WO PCT/US2009/042850 patent/WO2009137483A1/en active Application Filing
- 2009-05-05 AU AU2009244438A patent/AU2009244438C1/en active Active
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2010
- 2010-11-07 IL IL209183A patent/IL209183A/en active IP Right Grant
- 2010-11-26 ZA ZA2010/08503A patent/ZA201008503B/en unknown
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- 2014-03-13 IL IL231529A patent/IL231529A/en active IP Right Grant
- 2014-05-08 HK HK14104352.8A patent/HK1191073A1/en not_active IP Right Cessation
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Also Published As
| Publication number | Publication date |
|---|---|
| CN102084065A (en) | 2011-06-01 |
| AU2015249112A1 (en) | 2015-11-12 |
| EP2313560A1 (en) | 2011-04-27 |
| AU2009244438C1 (en) | 2020-10-22 |
| CN102084065B (en) | 2013-08-28 |
| DK2313560T3 (en) | 2018-01-29 |
| KR20110004896A (en) | 2011-01-14 |
| AU2009244438B2 (en) | 2015-08-27 |
| MX339695B (en) | 2016-06-06 |
| CN103526705B (en) | 2016-01-06 |
| CA2940944A1 (en) | 2009-11-12 |
| CA2725225A1 (en) | 2009-11-12 |
| HK1191073A1 (en) | 2014-07-18 |
| IL231529A (en) | 2014-11-30 |
| IL209183A (en) | 2014-05-28 |
| IL209183A0 (en) | 2011-01-31 |
| CA2940944C (en) | 2017-10-03 |
| WO2009137483A1 (en) | 2009-11-12 |
| PL2313560T3 (en) | 2018-04-30 |
| IL231529A0 (en) | 2014-04-30 |
| CL2009001078A1 (en) | 2010-04-16 |
| AU2009244438A1 (en) | 2009-11-12 |
| NO2313560T3 (en) | 2018-04-21 |
| ZA201008503B (en) | 2012-01-25 |
| CA2725225C (en) | 2016-11-01 |
| NZ589467A (en) | 2013-03-28 |
| EP2313560B1 (en) | 2017-11-22 |
| MX361970B (en) | 2018-12-19 |
| MX2010012170A (en) | 2011-02-18 |
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