CN116516866A - Highway guardrail convenient to repair - Google Patents
Highway guardrail convenient to repair Download PDFInfo
- Publication number
- CN116516866A CN116516866A CN202310694734.3A CN202310694734A CN116516866A CN 116516866 A CN116516866 A CN 116516866A CN 202310694734 A CN202310694734 A CN 202310694734A CN 116516866 A CN116516866 A CN 116516866A
- Authority
- CN
- China
- Prior art keywords
- foundation pit
- upright post
- repair
- extrusion
- upright posts
- 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.)
- Pending
Links
- 238000001125 extrusion Methods 0.000 claims abstract description 48
- 239000011150 reinforced concrete Substances 0.000 claims abstract description 4
- 239000004575 stone Substances 0.000 claims description 16
- 230000004888 barrier function Effects 0.000 claims 8
- 239000004576 sand Substances 0.000 claims 1
- 238000012423 maintenance Methods 0.000 abstract description 5
- 239000004567 concrete Substances 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- 230000002787 reinforcement Effects 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000010030 laminating Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000009412 basement excavation Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000012634 fragment Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
Classifications
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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
- E01F15/02—Continuous barriers extending along roads or between traffic lanes
- E01F15/04—Continuous barriers extending along roads or between traffic lanes essentially made of longitudinal beams or rigid strips supported above ground at spaced points
-
- 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
-
- 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
- E01F15/141—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 for column or post protection
-
- 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
- E01F15/145—Means for vehicle stopping using impact energy absorbers
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/60—Planning or developing urban green infrastructure
Abstract
The invention belongs to the technical field of highway guardrails, and particularly relates to a highway guardrail convenient to repair, which comprises upright posts and guardrail plates, wherein the upright posts also comprise lower upright posts below the ground and upper upright posts above the ground, a foundation pit which is used for placing the lower upright posts and is made of reinforced concrete is arranged below the upright posts, and buffer blocks are densely filled in the foundation pit; a plurality of extrusion blocks which are arranged along the radial direction of the lower upright post in a staggered way are fixed on the lower upright post. The invention solves the problems of difficult guardrail repair and high repair cost in the prior art; when collision energy is smaller, the buffer blocks in the foundation pit can fully absorb energy, so that collision deformation of the stand column is reduced, the repair difficulty of the stand column is reduced, the maintenance cost is reduced, and the maintenance time is saved. When the collision is severe, the upright posts are propped against the edges of the foundation pit, and the automobile is prevented from rushing out of the road by means of the rigidity of the upright posts and the extrusion of the extrusion block to the buffer block.
Description
Technical Field
The invention belongs to the technical field of highway guardrails, and particularly relates to a highway guardrail convenient to repair.
Background
The erection of highway guardrails is a key measure for preventing automobiles from rushing out of the road when accidents occur. In the prior art, the guardrail absorbs collision energy by utilizing deformation of guardrail plates, upright posts and foundation pits, when an accident occurs, the guardrail with lighter damage can still be continuously used after being repaired by special equipment, and the guardrail plates and the upright posts can be replaced when the guardrail plates and the upright posts cannot be repaired, but the replacement parts greatly increase the cost; the repair of the foundation pit needs to be carried out by special equipment or pile position re-selection, the former has complicated steps and takes longer time, the latter needs to modify the guardrail plate structure to be matched with a new pile, and the repair cost of the two modes is higher than that of the guardrail plate and the upright post.
Disclosure of Invention
The invention aims to solve the technical problem of providing a highway guardrail convenient to repair, so as to solve the problems of difficult guardrail repair and high repair cost in the prior art.
The invention is realized by the following technical scheme:
the highway guardrail convenient to repair comprises upright posts and guardrail plates, wherein the upright posts comprise lower upright posts below the ground and upper upright posts above the ground, a foundation pit for placing the lower upright posts is arranged below the upright posts, the inner wall of the foundation pit is made of reinforced concrete, and buffer blocks are densely filled in the foundation pit; the lower upright post is fixedly provided with a plurality of extrusion blocks, and the extrusion blocks are arranged in a radial staggered manner along the lower upright post.
Preferably, the buffer block is spherical and is made of stone frosted.
Preferably, the diameter of the bumper is 10-50 mm.
Preferably, the buffer block comprises spheres with different diameters of 10-50 mm.
Preferably, the cross section of the foundation pit is square or round, the side length or radius is 200-300mm, and the depth is 400-600mm; the length of the lower upright post is 80-90% of the depth of the foundation pit; the length of the extrusion block is 70-90% of the side length or radius of the foundation pit.
Preferably, the included angle between the central line of the extrusion block and the upright post along the axial direction is 60-90 degrees.
Preferably, a cover plate is arranged at the top of the foundation pit.
Preferably, the extrusion block is cylindrical or square or flat.
Preferably, the broad face of the flat plate-shaped extrusion block is parallel to the horizontal plane.
The principle of the invention is that when the automobile impacts the upright post or the guardrail, the impact force is transmitted to the buffer blocks through the upright post and the extrusion blocks, so that the buffer blocks are mutually staggered to generate certain resistance, and the inclination of the upright post is prevented. Through adjusting foundation ditch size, the position and the size of extrusion piece, the size and the shape of buffer block can change stand resistance size.
When the impact force of the automobile is large, the lower upright post is propped against the edge of the foundation pit, the rigidity of the upright post continuously bears the impact force, and the extrusion block also dissipates energy through the extrusion buffer block so as to prevent the automobile from rushing out of the road. After the lower upright post is propped against the edge of the foundation pit, the reaction force of the inner wall of the foundation pit to the upright post makes the upright post difficult to rotate, so that enough support is provided for the upper upright post, the upper end of the upright post is matched with the guardrail plate to intercept the automobile, and the automobile is further prevented from rushing out of the road.
After the small collision is finished, collision energy is absorbed by friction between buffer blocks in the foundation pit, the upright posts are only inclined, and the positions of the buffer blocks are moved. When in maintenance, only part of buffer blocks are taken out, the upright posts are righted, the buffer blocks are refilled and compacted, and the cover plate is covered.
The beneficial effects of the invention are as follows: when collision energy is smaller, the buffer blocks in the foundation pit can fully absorb energy, so that collision deformation of the stand column is reduced, the repair difficulty of the stand column is reduced, the maintenance cost is reduced, and the maintenance time is saved. When the collision is more severe, the upright posts are propped against the edges of the foundation pit, the automobile is prevented from rushing out of the road by means of the rigidity of the upright posts and the extrusion of the buffer blocks by the extrusion blocks, and meanwhile, the reaction force of the inner wall of the foundation pit to the upright posts can further prevent the automobile from rushing out of the road.
Drawings
FIG. 1 is a schematic view of the structure of embodiment 1 in normal use;
FIG. 2 is a schematic view of the structure of the impact-resistant vehicle of example 1;
FIG. 3 is a schematic view of the structure of example 2 after being impacted;
FIG. 4 is a schematic view of the structure of the embodiment 2 after a large impact;
in the accompanying drawings: 1 upright post, 2 guardrail plate, 3 extrusion piece, 4 buffer block, 5 foundation ditch, 6 apron, 7 reinforcing bars.
Detailed Description
Embodiment one:
as shown in fig. 1, a guardrail plate 2 is erected between two upright posts 1, and the guardrail plate 2 is a wave-shaped guardrail. The upright column 1 has the height of 2m and the diameter of 0.12m, is inserted in the center of the foundation pit 5, and the lengths of the exposed part and the buried depth part of the upright column are respectively 0.8m and 1.2m. The foundation pit is a cuboid with an upper end opening, the steel reinforcement framework is bound on the inner wall of the foundation pit 5, concrete is poured, and a concrete cover plate 6 is arranged at the upper opening. The depth of the built foundation pit is 1.4m, and the cross section is square with the side length of 0.3 m. The foundation pit 5 is internally filled with buffer blocks and compacted, the buffer blocks are spherical frosted stones, and the diameters of the buffer blocks are 20mm. 9 extrusion blocks 3 are fixed along the depth direction of the upright 1, the extrusion blocks 3 are staggered in a crotch shape and are obliquely welded with the upright 1, the inclination angle of the extrusion blocks 3 is 65 degrees, and the extrusion blocks 3 are in close contact with the buffer blocks 4.
As shown in fig. 2, the guardrail collision energy is small, the deformation of the upright post 1 is small, the upright post 1 and the guardrail plate 2 incline to the outer side of the road, but the upper upright post is not contacted with the upper edge of the foundation pit. Because the collision time interval is shorter, the extrusion block 3 can violently extrude and rub the buffer block 4 in the lower upright post when being inclined, the friction between stones and the friction or extrusion of the stones and the extrusion block 3 can consume collision energy, and meanwhile, the deformation of the extrusion block 3 can absorb part of energy. Therefore, the impact energy applied to the upright post 1 and the guardrail plate 2 is rapidly weakened, and the deformation of the upright post 1 and the guardrail plate relative to the common foundation pit guardrail is reduced. The buffer blocks 4 in the foundation pit 5 can be rearranged rapidly after the guardrail is impacted, stone fragments generated by friction or extrusion can fall into the pit bottom, the buffer blocks are rearranged to enable the inside of the foundation pit to have certain strength again, and the anti-collision capability of the guardrail can be recovered rapidly. And (3) refilling new stones and compacting when repairing the guardrail.
The construction steps of the examples are as follows: according to the foundation pit positioning excavation foundation pit 5 in advance, place the reinforcement cage and adopt the template to pour concrete at foundation pit 5 inner wall, place stand 1 in the center, fill up the stone to the foundation pit, the filling in-process needs to constantly insert and smash in order to reduce the space between the stone, pack up the stone after compacting it, pour apron 6 at the upper shed of foundation pit and seal the foundation pit.
The beneficial effects of the embodiment are that the stones and the extrusion blocks in the foundation pit can absorb part of energy, so that the collision deformation of the guardrail plates and the upright posts is reduced, and the repair difficulty of the upright posts 1 is reduced; the step of replacing stones during the foundation pit 5 repairing is simple to operate and low in cost.
Embodiment two:
fig. 3 is a schematic structural diagram of the second embodiment after being impacted, and the main difference between the present embodiment and the first embodiment is that: the foundation pit shape, the extrusion block shape and the grading of the buffer blocks are different.
Specifically, as shown in fig. 3, the foundation pit is of an incomplete ellipsoidal structure with an opening at the upper end, the steel reinforcement cage is bound on the inner wall of the foundation pit 5, concrete is poured, and a concrete cover plate 6 is arranged at the upper opening. The depth of the built pit is 1.4m, the diameter of the opening is 0.5m, and the widest part of the pit is 0.5m. The interior of the foundation pit 5 is filled with the buffer blocks 4 and compacted, the buffer blocks 4 are spherical frosted stones, and the diameters of the buffer blocks are 20mm-50 mm. 14 extrusion blocks 3 are fixed along the depth direction of the upright column 1, the extrusion blocks 3 are cylindrical, the included angles between the central line of the extrusion blocks 3 and the upright column 1 along the axial direction are 70 degrees, and the extrusion blocks 3 are in close contact with the buffer blocks 4.
The beneficial effect of this embodiment is that buffer block and foundation ditch inner wall laminating degree are good, and buffer block of different diameters can closely knit the arranging, and the absorption energy effect is better. The angle of the lower upright post is larger, so that the extrusion block can fully extrude the buffer block, and the collision deformation of the guardrail plate and the upright post is reduced, thereby reducing the repairing difficulty of the upright post; the step of replacing the buffer block during foundation pit repair is simple to operate and low in cost.
Embodiment III:
fig. 4 is a schematic structural diagram of the third embodiment after being impacted greatly, and the main difference between the present embodiment and the second embodiment is that: the inclination degree of the upright post is different from the inclination angle of the extrusion block.
Specifically, the extrusion block in this embodiment is in the shape of a cylinder, and the cylinder is horizontally fixed to the lower column. Fig. 3 shows a schematic view of tilting of the upright post of the embodiment 3 when the collision energy is large, the inside of the foundation pit 5 is filled with the buffer block 4 and compacted, the buffer block 4 is a spherical frosted stone, and the diameters of the buffer block 4 and the frosted stone are mixed with each other at 20mm-50 mm. 14 extrusion blocks 3 are fixed along the depth direction of the upright 1, and the extrusion blocks 3 are welded on the lower upright horizontally so that the extrusion blocks 3 are in close contact with the buffer blocks 4.
During collision, the upper upright post is impacted to incline, the upper upright post props against the edge of the foundation pit 5, at the moment, the extrusion block 3 of the lower upright post can fully rotate and can fully contact with the buffer block 4 due to the horizontal state, the buffer block 4 in the foundation pit 5 is partially worn out under the action of the extrusion block 3, meanwhile, the surface of the extrusion block is partially deformed, the lower upright post props against reinforced concrete of the inner wall of the foundation pit in an inclined manner, and the buffer blocks in the foundation pit are still densely distributed. The upper upright post can not be inclined continuously to deform, and the upper upright post bends at the contact position of the edge of the foundation pit. The cover plate is not shown in the figures, and has been partially broken during tilting of the upright.
The beneficial effect of this embodiment is that buffer block and foundation ditch inner wall laminating degree are good, and buffer block of different diameters can closely knit the arranging, and the absorption energy effect is better. The contact area of extrusion piece and buffer block is big, and the angle rotation scope is big, makes extrusion piece can fully extrude the buffer block, reduces the collision deformation of guardrail board and stand. Meanwhile, the reaction force of the inner wall of the foundation pit to the upright post makes the upright post difficult to rotate, so that enough support is provided for the upper upright post, the upper end of the upright post is matched with the guardrail plate to intercept the automobile, and the automobile is further prevented from rushing out of a road. The repairing difficulty of the upright post is further reduced; the step of replacing stones during foundation pit repair is simple to operate and low in cost.
The above description is only of the preferred embodiments of the present invention, and any person skilled in the art may modify the present invention or make modifications to the present invention equivalent thereto using the technical solutions described above. Therefore, any simple modification or equivalent made according to the technical solution of the present invention falls within the scope of the protection claimed by the present invention.
Claims (9)
1. The utility model provides a highway guardrail convenient to repair, includes stand (1) and guardrail board (2), stand (1) including being located the lower stand below ground and being located the upper stand above ground, its characterized in that: a foundation pit (5) for placing a lower upright post is arranged below the upright post (1), the inner wall of the foundation pit (5) is made of reinforced concrete, and a buffer block (4) is densely filled in the foundation pit; a plurality of extrusion blocks (3) are fixed on the lower upright post, and the extrusion blocks (3) are arranged in a radial staggered mode along the lower upright post.
2. A highway barrier for facilitating repair as claimed in claim 1 wherein: the buffer block (4) is spherical and is made of stone sand.
3. A highway barrier for facilitating repair as claimed in claim 2 wherein: the diameter of the buffer block (4) is 10-50 mm.
4. A highway barrier for facilitating repair as claimed in claim 2 wherein: the buffer block (4) comprises spheres with different diameters of 10-50 mm.
5. A highway barrier for facilitating repair as claimed in claim 1 wherein: the cross section of the foundation pit (5) is square or round, the side length or radius is 200-300mm, and the depth is 400-600mm; the length of the lower upright post is 80-90% of the depth of the foundation pit; the length of the extrusion block (3) is 70-90% of the side length or radius of the foundation pit.
6. A highway barrier for facilitating repair as claimed in claim 1 wherein: the included angle between the central line of the extrusion block (3) and the upright post (1) along the axial direction is 60-90 degrees.
7. A highway barrier for facilitating repair as claimed in claim 1 wherein: the top of foundation ditch (5) is provided with apron (6).
8. A highway barrier for facilitating repair as claimed in claim 1 wherein: the extrusion block (3) is in a cylinder shape or a square shape or a flat plate shape.
9. A highway barrier for facilitating repair as claimed in claim 8 wherein: the wide surface of the flat plate-shaped extrusion block (3) is parallel to the horizontal plane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310694734.3A CN116516866A (en) | 2023-06-13 | 2023-06-13 | Highway guardrail convenient to repair |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310694734.3A CN116516866A (en) | 2023-06-13 | 2023-06-13 | Highway guardrail convenient to repair |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116516866A true CN116516866A (en) | 2023-08-01 |
Family
ID=87392426
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310694734.3A Pending CN116516866A (en) | 2023-06-13 | 2023-06-13 | Highway guardrail convenient to repair |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116516866A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003160919A (en) * | 2001-11-27 | 2003-06-06 | Shigeru Tokuda | Shock buffering device for column |
| JP2016204961A (en) * | 2015-04-21 | 2016-12-08 | Ｎｅｃネッツエスアイ株式会社 | Root wrapping component, root wrapping block and root wrapping |
| CN208633020U (en) * | 2018-06-29 | 2019-03-22 | 广西远长公路桥梁工程有限公司 | A kind of road traffic guardrail for capableing of snubber shock |
| CN111676870A (en) * | 2020-06-26 | 2020-09-18 | 刘乾 | Safety anti-collision guardrail for expressway and installation method thereof |
| CN113123274A (en) * | 2021-04-14 | 2021-07-16 | 北京深华科交通工程有限公司 | Highway crash barrier |
| CN214939671U (en) * | 2021-06-23 | 2021-11-30 | 陈奥星 | Road and bridge are with preventing guardrail bar |
-
2023
- 2023-06-13 CN CN202310694734.3A patent/CN116516866A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003160919A (en) * | 2001-11-27 | 2003-06-06 | Shigeru Tokuda | Shock buffering device for column |
| JP2016204961A (en) * | 2015-04-21 | 2016-12-08 | Ｎｅｃネッツエスアイ株式会社 | Root wrapping component, root wrapping block and root wrapping |
| CN208633020U (en) * | 2018-06-29 | 2019-03-22 | 广西远长公路桥梁工程有限公司 | A kind of road traffic guardrail for capableing of snubber shock |
| CN111676870A (en) * | 2020-06-26 | 2020-09-18 | 刘乾 | Safety anti-collision guardrail for expressway and installation method thereof |
| CN113123274A (en) * | 2021-04-14 | 2021-07-16 | 北京深华科交通工程有限公司 | Highway crash barrier |
| CN214939671U (en) * | 2021-06-23 | 2021-11-30 | 陈奥星 | Road and bridge are with preventing guardrail bar |
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