CN105484188A - Blockage-preventing block and highly-adaptive guardrail adopting same - Google Patents

Blockage-preventing block and highly-adaptive guardrail adopting same Download PDF

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Publication number
CN105484188A
CN105484188A CN201511023031.XA CN201511023031A CN105484188A CN 105484188 A CN105484188 A CN 105484188A CN 201511023031 A CN201511023031 A CN 201511023031A CN 105484188 A CN105484188 A CN 105484188A
Authority
CN
China
Prior art keywords
vertical plate
swash plate
backplate
plate
obstruction block
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN201511023031.XA
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Chinese (zh)
Other versions
CN105484188B (en
Inventor
邵新鹏
敬敏
潘希峰
滕玉禄
孙天一
蒋鹏飞
张珂
亢寒晶
王可鹏
龚帅
时维强
杨福宇
高坤州
冯扬
柏毅
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Beijing Hualuan Traffic Technology Co ltd
Shandong Hi Speed Technology Development Group Co ltd
Shandong Provincial Communications Planning and Design Institute Group Co Ltd
Original Assignee
Beijing Hualuan Traffic Technology Co Ltd
Shandong Hi-Speed Technology Development Group Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Beijing Hualuan Traffic Technology Co Ltd, Shandong Hi-Speed Technology Development Group Co Ltd filed Critical Beijing Hualuan Traffic Technology Co Ltd
Priority to CN201511023031.XA priority Critical patent/CN105484188B/en
Publication of CN105484188A publication Critical patent/CN105484188A/en
Application granted granted Critical
Publication of CN105484188B publication Critical patent/CN105484188B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01FADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
    • E01F15/00Safety 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
    • E01F15/02Continuous barriers extending along roads or between traffic lanes
    • E01F15/04Continuous barriers extending along roads or between traffic lanes essentially made of longitudinal beams or rigid strips supported above ground at spaced points
    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01FADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
    • E01F15/00Safety 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
    • E01F15/02Continuous barriers extending along roads or between traffic lanes
    • E01F15/04Continuous barriers extending along roads or between traffic lanes essentially made of longitudinal beams or rigid strips supported above ground at spaced points
    • E01F15/0407Metal rails
    • E01F15/0438Spacers between rails and posts, e.g. energy-absorbing means

Abstract

The invention discloses a blockage-preventing block and a highly-adaptive guardrail adopting the same. The blockage-preventing block comprises a polygonal frame structure; a polygon formed by the frame structure comprises a first vertical edge; the upper end of the first vertical edge is connected with one end of a first bevel edge, and the lower end of the first vertical edge is connected with one end of a second bevel edge; an included angle formed between the first vertical edge and the first bevel edge is an obtuse angle, and an included angle formed between the first vertical edge and the second bevel edge is an acute angle; and the other end of the first bevel edge is connected with the other end of the second bevel edge through other edges. The blockage-preventing block disclosed by the invention can ensure that the height of a corrugated guard plate is not reduced after a high-speed corrugated guardrail suffers from great impact, thereby ensuring the safety protection capability of the guardrail.

Description

The protective guard of the height adaptive of a kind of obstruction block and this obstruction block of employing
Technical field
The present invention relates to highway for preventing protector for collar territory, be specially the protective guard of the height adaptive of a kind of obstruction block and this obstruction block of employing.
Background technology
Along with China's economy constantly develops, the recoverable amount of city automobile constantly increases, and the various traffic accidents that speedway occurs also emerge in an endless stream.Inventor finds through research, existing freeway guardrail limitation is the collision that can only be applicable to dilly, when the oversize vehicle such as vehicle such as large-scale loading lorry or big bus run into out of control knock highway guardrail time, because the weight of vehicle own is larger, inertia is stronger, freeway guardrail is knocked once out of control, huge impact can make the column be fixed as one with wave beams be out of shape along crash direction to topple over, the waveform backplate on current location is driven to reduce height thus make the waveform sill bolt of surrounding form a breach, and oversize vehicle out of control then can be run-off-road along breach, probably cause the major accident of car crash.
Summary of the invention
The technical problem that the present invention solves is to overcome existing highway guardrail and is subject to the problem that breach appears protecting in height that huge shock easily reduces waveform buffer zone, thus provide and can ensure that waveform backplate height does not reduce when being subject to Vehicular impact, the protective guard of a kind of obstruction block ensureing guardrail security protection ability and the height adaptive adopting this obstruction block.
Technical scheme
A kind of obstruction block, described obstruction block is set to the polygonal frame structure of transverse opening, comprise the first vertical plate, described first vertical plate upper end is connected with one end of the first swash plate, described first vertical plate lower end is connected with one end of the second swash plate, the angle that described first vertical plate and described first swash plate are formed is obtuse angle, and the angle that described first vertical plate and described second swash plate are formed is acute angle; The other end of described first swash plate or be connected with the other end of described second swash plate; Described first vertical plate upper end is provided with the first open slot that Open Side Down, and described first open slot comprises top reducing section and bottom flared section; Described second swash plate is provided with the first breach be connected with described bottom flared section.
Described polygonal frame structure is parallelogram lever structure, comprise described first vertical plate and the second vertical plate that are parallel to each other, described first vertical plate upper end is connected with one end of described first swash plate, and the other end of described first swash plate is connected with the upper end of described second vertical plate; Described second swash plate and described first swash plate are parallel to each other, described second swash plate two ends and the lower end of described first vertical plate and the lower end of described second vertical plate is corresponding connects.
Described first vertical plate and the second vertical plate are parallel to each other; The length of described first vertical plate is greater than described second vertical plate, and the length of described first swash plate is less than described second swash plate; Described first swash plate is connected with the both upper ends thereof of the second vertical plate with described first vertical plate respectively, and described second swash plate is connected with the two ends, bottom of the second vertical plate with described first vertical plate respectively.
Described second vertical plate is provided with the second open slot of opening upwards, and described second open slot comprises top flared section and bottom reducing section; Described first swash plate is provided with the second breach be connected with described top flared section.
Described polygonal frame edge is provided with flanging floor.
Described flanging floor is provided with reinforcing rib.
A protective guard for height adaptive, have employed above-mentioned a kind of obstruction block.
Also comprise column and backplate; Described obstruction block is fixed between described column and described backplate, described first vertical plate is fixed on described column by column set bolt through described top reducing section by described first vertical plate, described first breach size and described column set bolt size suitable; Described second vertical plate is provided with the screw fixed by bolt and described backplate.
The set bolt of described backplate to form a fixed connection in described bottom reducing section and described second vertical plate by hanging tag, the size of described second breach and the set bolt of backplate suitable; Described backplate is waveform configuration or board-type structure, and described backplate adopts steel plate material.
Shape and the described column of described first vertical plate fit; Described first vertical plate and described column position bonded to each other are provided with hooping structure, in order to be fastened on described column by described first vertical plate.
Beneficial effect
The protective guard of the height adaptive of a kind of obstruction block in the present invention and this obstruction block of employing compared with prior art, has following beneficial effect:
When errant vehicle starts to collide the backplate on high-speed protection hurdle, backplate drives obstruction block to produce distortion after being subject to impulsive contact force, due to the polygonal frame structure of obstruction block or the structure of parallelogram lever, it is obtuse angle that its first vertical plate and the first swash plate and the second swash plate define high-end angle, low side angle is acute angle, when obstruction block stress deformation, the other end of the first swash plate and the second swash plate all moves up towards the position of the first vertical plate, and after whole frame stressing, whole height also drives corrugated beam barrier to hoist rising while rising to some extent.
When the impulsive contact force of vehicle continues to strengthen, to a certain degree there is bending phenomenon afterwards in stressed the increasing to of fence upright, the set bolt of column is by sliding in the top reducing section of open slot, until be separated in bottom flared section, column and waveform backplate are thoroughly disconnected, and ensure that waveform backplate does not change with column distortion, waveform backplate height does not reduce, make protective guard have the effect of height adaptive, ensure guardrail security protection ability.
Further, second swash plate is provided with the breach be connected with bottom flared section, breach size and set bolt size suitable, make set bolt depart from obstruction block time can not be stuck on the second swash plate, effectively ensure that column and wave beams waveform backplate thoroughly effectively disconnect.
Further, the second open slot that second vertical plate is offered, facilitate described backplate to be fixed on described second vertical plate by the bolt mode hung tag in bottom reducing section, effectively add the success rate that backplate is separated in time with obstruction block, ensure that the height of backplate can not reduce.And by obstruction block and the column fixed form by hooping structure, when column be subject to certain impact occur outward-dipping time, obstruction block and backplate upwards can depart from column along riser incline direction, the same effective success rate that backplate is separated in time with column that ensures.
Further, in order to increase the active strength of obstruction block, be provided with flanging floor at polygonal frame edge, flanging floor is provided with reinforcing rib.When preventing oversize vehicle collision waveform beam guardrail out of control, because obstruction block intensity is too low, vehicle direct collision may form the section of stumbling and hindering to column place.
For the ease of producing and assembling, backplate is for adopting waveform configuration or the structural segmented formula assembling of board-type, and backplate is steel plate material, effectively ensure that the crash-protective characteristics of backplate.
Accompanying drawing explanation
Fig. 1 is the structural representation of obstruction block polygonal frame in the present invention.
Fig. 2 is the structural representation of obstruction block parallelogram lever in the present invention.
Fig. 3 is the structural representation of the non-parallel quadrilateral frame of obstruction block in the present invention.
Fig. 4 is the structural representation that in Fig. 2, obstruction block offers the first open slot.
Fig. 5 is the guardrail structure schematic diagram of the obstruction block be provided with in the present invention in Fig. 2.
Fig. 6 is the structural representation of obstruction block second open slot in the present invention.
Fig. 7 is the second example structure schematic diagram of protective guard in the present invention.
Fig. 8 is the 3rd example structure schematic diagram of protective guard in the present invention.
Drawing reference numeral:
1-column; 2-obstruction block; 3-backplate; 4-column set bolt; 5-backplate set bolt; 6-first vertical plate (limit); 7-first open slot; 8-top reducing section; 9-bottom flared section; 10-second vertical plate (limit); 11-first swash plate (limit); 12-second swash plate (limit); 13-first breach; 14-second vertical plate connecting hole; 15-flanging floor; 16-reinforcing rib; 17-the 3rd swash plate (limit), 18-second open slot, 19-top flared section, 20-bottom reducing section, 21-second open slot breach, 22-anchor ear.
Detailed description of the invention
Fig. 1 is the structural representation of a kind of polygonal frame obstruction block in the present invention, as shown in Figure 1: a kind of obstruction block 2 comprises the polygonal frame structure of transverse opening, the polygon that described frame construction is formed comprises the first vertical edge 6, first vertical edge 6 upper end is connected with one end of the first hypotenuse 11, first vertical edge 6 lower end is connected with one end of the second hypotenuse 12, the angle that first vertical edge 6 and the first hypotenuse 11 are formed is obtuse angle, and the angle that the first vertical edge 6 and the second hypotenuse 12 are formed is acute angle; The other end of the first hypotenuse 11 is interconnected by the 3rd hypotenuse 17 and the second hypotenuse 12.
Polygonal frame structure in the present invention has a variety of selection, as quadrilateral frame shelf structure or pentagon frame construction etc., Fig. 2 is the structural representation of a kind of parallelogram lever obstruction block in the present invention, as shown in Figure 2, and polygonal frame structure preferred parallel quadrilateral frame in the present invention.Comprise the first vertical plate 6 (i.e. the first vertical edge 6) and the second vertical plate 10 (the second vertical edge 10) that are parallel to each other, first vertical edge 6 upper end is connected with one end of the first swash plate 11 (i.e. the first hypotenuse 11), and the other end of the first swash plate 11 is connected with the upper end of the second vertical edge 10; Second swash plate 12 and the first swash plate 11 are parallel to each other, and the lower end of the second swash plate 12 two ends and the first vertical plate 6 and the second vertical plate 10 is corresponding to be connected.Then in the present invention, preferred quadrilateral frame shelf structure becomes parallelogram lever structure.
Fig. 3 is the structural representation of non-parallel quadrilateral frame obstruction block in the present invention.As shown in Figure 3, in the present invention, obstruction block also comprises a kind of embodiment of non-parallel quadrilateral frame shelf structure, and in this embodiment, the first vertical plate 6 and the second vertical plate 10 are parallel to each other; The length of the second vertical plate 10 is less than the first vertical plate 6, the length of the first swash plate 11 is also less than the second swash plate 12, first swash plate 11 is connected with the both upper ends thereof of the first vertical plate 6 with the second vertical plate 10 respectively, and the second swash plate 12 is connected with the two ends, bottom of the first vertical plate 6 with the second vertical plate 10 respectively; The angle making the first vertical plate 6 and the first swash plate 11 be formed like this is obtuse angle, and the angle that the first vertical plate 6 and the second swash plate 12 are formed is acute angle.
When the second vertical plate 10 of obstruction block 2 is subject to certain transverse direction collision pressure, because the angle between the first swash plate 11 and the first vertical plate 6 is obtuse angle, be greater than 90 °, and the angle of the first vertical plate 6 and the second swash plate 12 is acute angle, be less than 90 °, angle then between the first swash plate 11 and the first vertical plate 6 can become large, and the angle of the first vertical plate 6 and the second swash plate 12 can diminish, make stressed after the second vertical plate 10 form a displacement of rising upward.
Concrete, Fig. 4 is the structural representation that in Fig. 2, obstruction block offers the first open slot, and Fig. 5 is the guardrail structure schematic diagram of the obstruction block be provided with in the present invention in Fig. 2.Shown in Fig. 4 and Fig. 5: the protective guard in the present invention comprises column 1, obstruction block 2 and backplate 3, and described backplate is waveform configuration or board-type structure, and described backplate adopts steel plate material.Obstruction block 2 is fixed between column 1 and backplate 3.The shape of backplate can adopt waveform configuration and straight plated construction segmented assembling, be convenient to produce and assembling, the backplate 3 preferred wave shape form structure in the present embodiment is guaranteed strength, backplate 3 in the present invention is preferably steel plate material, effectively ensure that the crash-protective characteristics of backplate 3.First vertical plate 6 upper end is provided with the open slot 7 that Open Side Down, and open slot 7 comprises top reducing section 8 and bottom flared section 9.Obstruction block 2 is fixed on column 1 by column set bolt 4 through reducing section 8 by obstruction block 2; When oversize vehicle out of control continues collision, the further stressed generation bending phenomenon of column 1, column set bolt 4 is by sliding in the top reducing section 8 of open slot 7, until be separated from enlarging when sliding into bottom flared section 9, column 1 and backplate 3 are thoroughly disconnected, and ensure that the height of backplate 3 is not out of shape with column 1 and changes, backplate 3 does not highly reduce, protective guard the is possessed effect of height adaptive, effectively ensures backplate 3 security protection ability.
Concrete, when oversize vehicle (not shown) out of control starts collision waveform beam guardrail, obstruction block 2 can be out of shape in stressed generation, due to the polygonal frame structure of obstruction block 2, especially parallelogram lever structure, it is obtuse angle that its first vertical plate 6 and the first swash plate 11 and the second swash plate 12 define high-end angle, low side angle is acute angle, therefore when obstruction block 2 stress deformation, the angle that first vertical plate 6 and the first swash plate 11 are formed can become large, and the angle that the second swash plate 12 is formed can diminish; The angle that second vertical plate 10 and the first swash plate 11 are formed can diminish, can become large with the angle that the second swash plate 12 is formed, the angle that the first corresponding swash plate 11 is formed can become large, can diminish with the angle that the second swash plate 12 is formed, after whole parallelogram lever stress deformation, apex height rises, and the backplate 3 be fixed on the second vertical plate 10 upwards rises towards the first vertical plate 6 tip position.Prevent the backplate 3 after by oversize vehicle shock out of control highly too low thus multiple backplate 3 is around formed waveform sill bolt (not shown) to bottom decline formation breach, avoid oversize vehicle out of control run-off-road along breach further, cause the major accident of car crash, effectively improve guardrail security protection ability.When worrying oversize vehicle collision waveform beam guardrail out of control simultaneously, if obstruction block 2 intensity is too low, oversize vehicle direct collision may form the section of stumbling and hindering to column 1 place, so the self-strength of obstruction block 2 needs to obtain certain reinforcement, the method strengthening self-strength comprises and can carry out flanging, crimping or reinforcing rib process to it, and in the present invention, the quadrilateral frame edge of preferred obstruction block 2 is provided with flanging floor 15.And flanging floor 15 is provided with reinforcing rib 16 equally.
Further, the second swash plate 12 offers the first breach 13 be connected with bottom flared section 9.The size of the first breach 13 and the size of column set bolt 4 suitable, effectively ensure that column 1 and backplate 3 thoroughly effectively disconnect, column set bolt 4 is prevented to be stuck on the second swash plate 12 when departing from the bottom flared section 9 of obstruction block 2 fast, avoiding column set bolt 4 cannot depart from smoothly rapidly from the first breach 13 causes column 1 bending to drag down the height of backplate 3, makes backplate 3 lose complete security protection ability.
Fig. 6 is the structural representation of obstruction block second open slot in the present invention.As shown in Figure 6, the success rate of obstruction block 2 is departed from order to effectively increase backplate 3, in obstruction block 2, second vertical plate 10 offers the second open slot 18 in the present embodiment, second open slot 18 comprises top flared section 19 and bottom reducing section 20, backplate set bolt 5 is fixed in bottom reducing section 20 by the mode hung tag, backplate 2 is made to be fixed on the second vertical plate 10, first swash plate is provided with the second breach 20 be connected with top flared section 19, the size of the second breach 20 and the size of backplate set bolt 5 suitable, effectively ensure that backplate set bolt 5 detaches after can sliding to top flared section 19 by bottom reducing section 20, effectively add the success rate that backplate 3 departs from time with obstruction block 2, ensure that the height of backplate 2 can not reduce.
Fig. 7 is the second example structure schematic diagram of protective guard in the present invention.As shown in Figure 7, in the present embodiment, protective guard have employed obstruction block 2 in Fig. 6, and backplate 3 is preferably straight plated construction.Backplate set bolt 5 is provided with in the middle part of backplate 3, by one end of the backplate set bolt 5 on backplate 3 is hung tag in the second open slot 18, backplate 3 is made to have the ability directly departed from from the second vertical plate 10, effective guarantee backplate 3 is timely after receiving collision directly to depart from from the second vertical plate 10, and the height of backplate 3 can not reduce.
Fig. 8 is the 3rd example structure schematic diagram of protective guard in the present invention.In the present embodiment, in obstruction block 2, the shape of the first vertical plate 6 and the shape of described column 1 fit; First vertical plate 6, two side positions bonded to each other with column 1 are provided with anchor ear 22 structure, in order to be fastened on described column 1 by the first vertical plate 6.And by obstruction block 2 and the fixed form of column 1 by anchor ear 22 structure, so that when column 1 be subject to certain impact occur outward-dipping time, obstruction block 2 and backplate 3 can rise along riser 1 incline direction and be formed with column 1 and depart from, and equally effectively add the success rate that backplate 3 departs from time with column 1.

Claims (10)

1. an obstruction block, it is characterized in that: described obstruction block is set to the polygonal frame structure of transverse opening, comprise the first vertical plate, described first vertical plate upper end is connected with one end of the first swash plate, described first vertical plate lower end is connected with one end of the second swash plate, the angle that described first vertical plate and described first swash plate are formed is obtuse angle, and the angle that described first vertical plate and described second swash plate are formed is acute angle; The other end of described first swash plate or be connected with the other end of described second swash plate; Described first vertical plate upper end is provided with the first open slot that Open Side Down, and described first open slot comprises top reducing section and bottom flared section; Described second swash plate is provided with the first breach be connected with described bottom flared section.
2. a kind of obstruction block according to claim 1, it is characterized in that: described polygonal frame structure is parallelogram lever structure, comprise described first vertical plate and the second vertical plate that are parallel to each other, described first vertical plate upper end is connected with one end of described first swash plate, and the other end of described first swash plate is connected with the upper end of described second vertical plate; Described second swash plate and described first swash plate are parallel to each other, described second swash plate two ends and the lower end of described first vertical plate and the lower end of described second vertical plate is corresponding connects.
3. a kind of obstruction block according to claim 1, is characterized in that: described first vertical plate and the second vertical plate are parallel to each other; The length of described first vertical plate is greater than described second vertical plate, and the length of described first swash plate is less than described second swash plate; Described first swash plate is connected with the both upper ends thereof of the second vertical plate with described first vertical plate respectively, and described second swash plate is connected with the two ends, bottom of the second vertical plate with described first vertical plate respectively.
4. a kind of obstruction block according to claim 2, is characterized in that: described second vertical plate is provided with the second open slot of opening upwards, and described second open slot comprises top flared section and bottom reducing section; Described first swash plate is provided with the second breach be connected with described top flared section.
5. a kind of obstruction block according to claim 1, is characterized in that: described polygonal frame edge is provided with flanging floor.
6. a kind of obstruction block according to claim 1, is characterized in that: described flanging floor is provided with reinforcing rib.
7. a protective guard for height adaptive, is characterized in that: have employed a kind of obstruction block that one of claim 1-6 is described.
8. the protective guard of a kind of height adaptive according to claim 7, it is characterized in that: also comprise column and backplate, described obstruction block is fixed between described column and described backplate, described first vertical plate is fixed on described column by column set bolt through described top reducing section by described first vertical plate, described first breach size and described column set bolt size suitable; Described second vertical plate is provided with the screw fixed by bolt and described backplate.
9. the protective guard of a kind of height adaptive according to claim 7, it is characterized in that: the set bolt of described backplate to form a fixed connection in described bottom reducing section and described second vertical plate by hanging tag, the size of described second breach and the set bolt of backplate suitable; Described backplate is waveform configuration or board-type structure, and described backplate adopts steel plate material.
10. the protective guard of a kind of height adaptive according to claim 8, is characterized in that: shape and the described column of described first vertical plate fit; Described first vertical plate and described column position bonded to each other are provided with hooping structure, in order to be fastened on described column by described first vertical plate.
CN201511023031.XA 2015-12-29 2015-12-29 A kind of guard rail of the height adaptive of obstruction block and the use obstruction block Active CN105484188B (en)

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Application Number Priority Date Filing Date Title
CN201511023031.XA CN105484188B (en) 2015-12-29 2015-12-29 A kind of guard rail of the height adaptive of obstruction block and the use obstruction block

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CN105484188B CN105484188B (en) 2018-02-02

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113957826A (en) * 2021-11-08 2022-01-21 湖南交通国际经济工程合作有限公司 Protective guardrail for central separation belt portal of highway and construction method thereof

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006018458A1 (en) * 2004-07-15 2006-02-23 Taexpa, S.L. System for protecting individuals from impacts against road guard rails
CN203613485U (en) * 2013-12-25 2014-05-28 交通运输部公路科学研究所 Protective guard
CN204112263U (en) * 2014-10-31 2015-01-21 北京中交路成交通技术有限公司 Speedway monophasic waveform joist steel guardrail
CN205576800U (en) * 2015-12-29 2016-09-14 山东高速科技发展集团有限公司 Prevent block and adopt this high adaptive rail guard of preventing block

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006018458A1 (en) * 2004-07-15 2006-02-23 Taexpa, S.L. System for protecting individuals from impacts against road guard rails
CN203613485U (en) * 2013-12-25 2014-05-28 交通运输部公路科学研究所 Protective guard
CN204112263U (en) * 2014-10-31 2015-01-21 北京中交路成交通技术有限公司 Speedway monophasic waveform joist steel guardrail
CN205576800U (en) * 2015-12-29 2016-09-14 山东高速科技发展集团有限公司 Prevent block and adopt this high adaptive rail guard of preventing block

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113957826A (en) * 2021-11-08 2022-01-21 湖南交通国际经济工程合作有限公司 Protective guardrail for central separation belt portal of highway and construction method thereof
CN113957826B (en) * 2021-11-08 2022-12-27 湖南交通国际经济工程合作有限公司 Protective guardrail for central separation belt portal of highway and construction method thereof

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