CN212582523U - Expressway central separation strip beam column type guardrail transition section - Google Patents
Expressway central separation strip beam column type guardrail transition section Download PDFInfo
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- CN212582523U CN212582523U CN202021123274.7U CN202021123274U CN212582523U CN 212582523 U CN212582523 U CN 212582523U CN 202021123274 U CN202021123274 U CN 202021123274U CN 212582523 U CN212582523 U CN 212582523U
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Abstract
The utility model discloses a highway central authorities 'bank strip beam column type guardrail changeover portion, including beam column type guardrail, changeover portion, transition wing wall, bridge concrete guardrail narrowing section, bridge concrete guardrail standard section, set gradually beam column type guardrail, changeover portion, transition wing wall, bridge concrete guardrail narrowing section and bridge concrete guardrail standard section on following highway central authorities' bank, beam column type guardrail and changeover portion fixed connection. The utility model discloses can realize novel central authorities' median barrier and adjacent design bridge railing smooth-going effective transition.
Description
Technical Field
The utility model belongs to the technical field of highway central authorities 'bank, concretely relates to highway central authorities' bank beam column formula guardrail changeover portion.
Background
When connecting between the guardrail of different protection grades or different structural style, carry out the changeover portion design, the purpose is when reducing the vehicle collision linkage segment, because the transverse deformation difference takes place to trip and hinder, and the effectual changeover portion of safety can reduce when the vehicle collides the guardrail and rush out or pass through the guardrail from the changeover portion.
At present, the transition sections with great potential safety hazards on roads in China are mostly the transitions between concrete guardrails and corrugated beam guardrails or metal steel guardrails, in practical application, some transition sections adopt a simpler processing mode, and when a vehicle collides with a joint, the vehicle can generate a stumbling phenomenon due to the difference of the rigidity and the strength of the two types of guardrails, so that drivers and passengers are directly injured. Problems that exist in guardrail transition section design and setting include:
firstly, a transition section is not arranged, two guardrails are disconnected, the protective capacity of the guardrails forms broken chains, and after a vehicle collides with the transition section of the guardrails, a malignant accident that the vehicle passes through the transition section and rushes out of a road occurs;
and the structure of the transition section is subjected to smooth connection and rigidity transition treatment, but the collision avoidance level is not detected and evaluated through a real vehicle collision test, the structural design is unreasonable, the connection is weak, the protection capability of the guardrail is discontinuous, the passing of a vehicle cannot be effectively blocked, or the vehicle is stumbled and blocked due to improper rigidity transition, and the impact of passengers is overlarge.
According to the relevant provisions of road traffic safety facility design Specification (JTG D81-2017), the protection grade of the guardrail transition section at least reaches the lower protection grade of two connected guardrails. The recommended form of the transition section of the common corrugated beam guardrail and the bridge concrete guardrail is given in the current design rules of road traffic safety facilities (JTG/T D81-2017), and the protection grade is A grade or SB grade. But because this engineering guardrail is the guardrail of novel integral central separation area beam column structure, and the protection level is SS level, and the bridge concrete guardrail of transitional coupling with it is two kinds of protection levels of SS level and SA level, according to above-mentioned regulation, the guardrail changeover portion of this engineering chooses for use SS level protection level. Therefore, the recommended forms in the rules cannot be applied to the project from the structural level or the protection level.
SUMMERY OF THE UTILITY MODEL
In view of this, the main object of the present invention is to provide a transition section of a beam column type guardrail for a central division strip of a highway.
In order to achieve the above purpose, the technical scheme of the utility model is realized like this:
the embodiment of the utility model provides a highway central authorities 'bank note beam column type guardrail changeover portion, including beam column type guardrail, changeover portion, transition wing wall, bridge concrete guardrail narrowing section, bridge concrete guardrail standard section, set gradually beam column type guardrail, changeover portion, transition wing wall, bridge concrete guardrail narrowing section and bridge concrete guardrail standard section on following highway central authorities' bank note, beam column type guardrail and changeover portion fixed connection.
In the above scheme, still include bridge concrete guardrail transition, bridge concrete guardrail transition sets up between bridge concrete guardrail narrowing section and bridge concrete guardrail standard section.
In the above scheme, the beam column type guardrail includes concrete surface course, stand, crossbeam, the vertical supporting component of crossbeam, crossbeam transverse connection reinforcement assembly, the concrete surface course sets up on highway central authorities separate the area, the lower extreme setting of stand is in the concrete surface course and extends to the stratum, the stand sets gradually three crossbeams towards the both sides from the top down of two driving directions of highway, and every crossbeam is connected with the stand through the vertical supporting component of crossbeam on vertical, and every crossbeam is connected the extension through crossbeam transverse connection reinforcement assembly on horizontal, is located the crossbeam of stand top both sides passes through roof and bolt and stand fixed connection.
In the scheme, the width of the transition section is the same as that of the beam-column type guardrail, and the height of the transition section is the same as that of the lower bottom surface of the uppermost beam in the beam-column type guardrail.
In the scheme, the height of the narrowing section of the transition wing wall and the bridge concrete guardrail is the same as that of the transition section, two side faces, facing the expressway, of the narrowing section of the transition wing wall and the bridge concrete guardrail are inclined planes, and the width of the narrowing section of the transition wing wall and the bridge concrete guardrail is increased to be the same as that of the standard section of the bridge concrete guardrail.
In the above scheme, the width of the bridge concrete guardrail gradual change section is the same as the standard section of the bridge concrete guardrail, and the height of the bridge concrete guardrail gradual change section is gradually reduced to the height of the bridge concrete guardrail standard section.
In the above scheme, the crossbeam that lies in the top in the beam column type guardrail passes through the pre-buried bolt of vertical setting and the top surface fixed connection of changeover portion, and the crossbeam that extends to in the changeover portion passes through the pre-buried bolt fixed connection of horizontal setting with the side of changeover portion.
In the above scheme, the longitudinal beam supporting assembly comprises L-shaped supporting pieces and connecting bolts, the L-shaped supporting pieces are arranged on the upper side and the lower side of the beam, and the vertical surface of each L-shaped supporting piece is fixedly connected with the upright post through two connecting bolts side by side.
In the above scheme, the transverse beam connection reinforcing component comprises an inner sleeve and splicing bolts, wherein the inner sleeve is transversely arranged in the two sections of transverse beams and is fixedly connected with the two sections of transverse beams through the splicing bolts.
In the scheme, the concrete structure further comprises a stand column reinforcing beam, the stand column reinforcing beam is embedded in the lower portion of the inside of the stand column and connected with the stand column through bolts, and one portion of the stand column reinforcing beam is located in the concrete surface layer.
Compared with the prior art, the utility model discloses can realize novel central authorities' division strip guardrail and adjacent design bridge railing smooth-going effective transition.
Drawings
Fig. 1 is a schematic structural view of a central division strip beam column type guardrail transition section of a highway provided by the embodiment of the invention 1;
FIG. 2 is a top view of FIG. 1;
fig. 3 is a schematic structural view of a central division strip beam column type guardrail transition section of a highway provided by the embodiment of the invention 2;
FIG. 4 is a top view of FIG. 3;
fig. 5 is a schematic structural view of a central separation band beam column type guardrail transition section middle beam column type guardrail of the highway provided by the embodiment of the utility model;
FIG. 6 is a top view of FIG. 5;
fig. 7 is a side view of fig. 5.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The embodiment of the utility model provides a highway central authorities 'separate zone beam column type guardrail changeover portion, as shown in fig. 1-7, including beam column type guardrail 1, changeover portion 2, transition wing wall 3, bridge concrete guardrail narrowing section 4, bridge concrete guardrail standard section 5, set gradually beam column type guardrail 1, changeover portion 2, transition wing wall 3, bridge concrete guardrail narrowing section 4 and bridge concrete guardrail standard section 5 on the separate zone of highway central authorities along, beam column type guardrail 1 and 2 fixed connection of changeover portion realize novel central authorities' separate zone guardrail and adjacent smooth-going effective transition of designing bridge guardrail.
Further, still include bridge concrete guardrail transition 6, bridge concrete guardrail transition 6 sets up between bridge concrete guardrail narrowing section 4 and bridge concrete guardrail standard section 5.
Beam column guardrail 1 includes concrete surface course 11, stand 12, crossbeam 13, the vertical supporting component of crossbeam 14, crossbeam transverse connection reinforcement assembly 15, concrete surface course 1 sets up on highway central authorities separate area, the lower extreme setting of stand 12 is in concrete surface course 11 and extend to the stratum, stand 12 sets gradually three crossbeams 13 to the both sides from the top down of two driving directions of highway towards stand 12, and every crossbeam 13 is connected with stand 12 through the vertical supporting component of crossbeam 14 on vertical, and every crossbeam 13 is connected the extension through crossbeam transverse connection reinforcement assembly 15 on horizontal, is located the crossbeam 13 of stand 12 top both sides passes through roof 17 and bolt and stand 12 fixed connection.
The width of the transition section 2 is the same as that of the beam column type guardrail 1, and the transition part of the guardrail is not provided with a protruding section, so that the condition that a vehicle is blocked or a protruding guardrail member damages a vehicle body when colliding with the transition section of the guardrail is avoided. The height of the lower bottom surface of the uppermost beam 13 in the beam column type guardrail 1 is the same as that of the lower bottom surface of the uppermost beam 13, so that the two guardrail structures can be conveniently lapped.
The height of transition wing wall 3, bridge concrete guardrail narrowing section 4 is the same with changeover portion 2, the changeover portion of being convenient for and the bridge concrete guardrail transitional coupling of different protection levels.
The inclination of 3 sides of transition wing walls is 7, the inclination of 4 sides of bridge concrete guardrail narrowing section is 1 to guarantee the safety of traveling of vehicle under the guardrail cross-section width change condition, if the angle of cross-section sudden change department is too big, then probably cause the vehicle to collide the guardrail changeover portion with great collision angle, aggravate the consequence severity of collision accident.
The width of the bridge concrete guardrail transition section 6 is the same as the bridge concrete guardrail standard section 5, and the height of the bridge concrete guardrail transition section is gradually reduced to the height of the bridge concrete guardrail standard section 5 so as to realize smooth connection of the transition section and the bridge concrete guardrail.
The crossbeam 13 that lies in the top in beam column type guardrail 1 is through the pre-buried bolt 131 of vertical setting and the top surface fixed connection of changeover portion 2, extends to crossbeam 13 in the changeover portion 2 and the side of changeover portion 2 through the pre-buried bolt 131 fixed connection of horizontal setting.
The beam longitudinal support assembly 14 comprises L-shaped supports 141 and connecting bolts 142, the L-shaped supports 141 are arranged on the upper and lower sides of the beam 13, and the vertical surface of the L-shaped support 41 is fixedly connected with the column 12 through the first connecting bolt 142 and the second connecting bolt 143 which are arranged side by side.
Each cross beam 3 is reinforced by the L-shaped supporting piece 141, and the longitudinal strength of the guardrail is improved.
The transverse beam transverse connection reinforcing assembly 5 comprises an inner sleeve 151 and a splicing bolt 152, wherein the inner sleeve 51 is transversely arranged in the two sections of transverse beams 13 and is fixedly connected with the two sections of transverse beams 13 through the splicing bolts 152.
Each cross beam 13 is composed of several cross beams 13 connected in the transverse direction, and the transverse strength of the guardrail is enhanced by the inner sleeve 151 and the splice bolt 152.
Further, the structure also comprises a column reinforcing beam 16, wherein the column reinforcing beam 16 is embedded in the lower part of the column 12 and is connected with the column 12 through a bolt, and a part of the column reinforcing beam 16 is positioned in the concrete surface layer 11.
The column reinforcing beam 16 reinforces the connection strength of the column 12 and the concrete surface layer 11, so that the column 12 is not inclined to one side or the inclination angle is reduced as much as possible when an accident vehicle collides with the guard rail.
The cross beams 13 positioned on the two sides of the top of the upright post 12 are fixedly connected with the upright post 12 through a top plate 17 and bolts.
The connection strength of the upright post 12 and the concrete surface course 11 is further enhanced by the root reinforcing ribs 18.
The distance between the beam 13 positioned at the uppermost part of the upright post 12 and the beam 13 positioned below the uppermost part is larger than the distance between the other two beams 13, and the distance between the other two beams 13 and the distance between the beam 13 positioned at the lowermost part and the top surface of the concrete surface layer 1 are equal.
For example, the three beams 13 are sequentially arranged from top to bottom along the longitudinal direction of the upright 12, the distance between the first beam 13 and the second beam 13 is 460mm, the distance between the second beam 13 and the third beam 13 is 350mm, and the distance between the third beam 13 and the concrete surface layer 11 is 350mm, so that the protection capability of the beam 3 in protecting different vehicle types is realized through the arrangement of the intervals.
The distance between the first cross beam 13 and the second cross beam 13 is large, and the first cross beam and the second cross beam mainly protect a large bus and a large truck, so that the vehicle can be prevented from being turned over along the top surface of the guardrail due to high gravity center while the protection capability is ensured.
The second beam 13 and the third beam 13 mainly prevent the guard bar from being penetrated under the small-sized vehicle, and can provide better buffer effect and prevent the acceleration of passengers from exceeding the standard when the passenger car collides with the guard bar.
Further, a pillar support assembly 19 is further included, and the pillar support assembly 19 is provided on the lower side of the uppermost cross member 13 for support after the pillar 12 is hit by the vehicle and is tilted.
The upright post supporting component 19 comprises a freely telescopic supporting rod 191, a magnetic force limiting block 192 and an elastic piece 193, one end of the freely telescopic supporting rod 191 is hinged to the lower side of the uppermost cross beam 13 and is positioned on one side of the upright post 12 facing the expressway, the magnetic force limiting block 192 is arranged on the upright post 12 and is adsorbed by the freely telescopic supporting rod 191 towards one side of the freely telescopic supporting rod 191, the elastic piece 193 is positioned below the magnetic force limiting block 192, one end of the elastic piece is connected with the upright post 12, and the other end of the elastic piece is connected with the lower side of the freely telescopic supporting rod 191.
It is assumed that when a vehicle strikes the guard rail from the right, the substantial shielding effect is provided by the uprights 12 and the cross-members 13. Because the vehicle speed is too high, the upright post 12 can incline leftwards to a certain extent, at this moment, under the effect of instantaneous impact force, the freely telescopic supporting rod 191 under the cross beam 13 on the left side of the upright post 12 is separated from the magnetic force limiting block 192 and is instantaneously opened, and simultaneously, the angle between the freely telescopic supporting rod and the upright post 2 is reduced under the contraction force of the elastic piece 193, so that the freely telescopic supporting rod is just vertical to the road surface, the supporting effect on the upright post 12 is played, and the situation that the leftwards road surface is continuously inclined to exceed the safety C value in the standard is prevented.
And the freely telescopic supporting rod 191 below the cross beam 13 on the right side of the upright post 12 cannot rotate to the left side under the limit of the magnetic limiting block 192, so that the function of protecting the vehicle by the auxiliary cross beam 13 is achieved.
The cross beam 3 is a square beam.
Or, the cross beam 3 is a square beam, the top of the cross beam is inclined towards the corresponding expressway, and a reinforcing plate 31 is horizontally arranged on the upper side in the cross beam 3.
The two sides of the top plate 17 are matched with the tops of the cross beams 13 in an inclined mode, and meanwhile bolts are arranged in an inclined mode so that the top plate 17, the cross beams 13 and the L-shaped supporting pieces 141 can be fixed.
At the highway in plateau area, can prevent through the slope at top that snow on the guardrail increases guardrail weight, and then influences the intensity of guardrail when the vehicle bumps.
Example 1
The embodiment 1 of the utility model provides a highway central authorities' separate zone beam column type guardrail changeover portion, as shown in fig. 1, 2, can reach SS level security level, including beam column type guardrail 1, changeover portion 2, transition wing wall 3, bridge concrete guardrail narrowing section 4, bridge concrete guardrail standard section 5, set gradually beam column type guardrail 1, changeover portion 2, transition wing wall 3, bridge concrete guardrail narrowing section 4 and bridge concrete guardrail standard section 5 on the central separate zone of following the highway, beam column type guardrail 1 and 2 fixed connection of changeover portion.
The width of the transition section 2 is the same as that of the beam-column guardrail 1, and the height of the transition section is the same as that of the lower bottom surface of the uppermost beam 13 in the beam-column guardrail 1.
The height of the standard section 5 of the bridge concrete guardrail is the same as that of the transition section 2.
The height of transition wing wall 3, bridge concrete guardrail narrowing section 4 is the same with changeover portion 2, transition wing wall 3 and bridge concrete guardrail narrowing section 4 are the inclined plane towards two sides of highway to the width is increased to the width the same with bridge concrete guardrail standard section 5 by the width of changeover portion 2.
The inclination of 3 two sides of transition wing wall is 7, the inclination of 4 two sides of bridge concrete guardrail narrow section is 1.
The crossbeam 13 that lies in the top in beam column type guardrail 1 passes through buried bolt 131 and the top surface fixed connection of changeover portion 2 in advance.
Example 2
The embodiment 2 of the utility model provides a highway central authorities 'separate zone beam column type guardrail changeover portion, as shown in fig. 3, 4, can reach SS level safety class, including beam column type guardrail 1, changeover portion 2, transition wing wall 3, bridge concrete guardrail narrowing section 4, bridge concrete guardrail standard section 5 bridge concrete guardrail gradual change section 6 sets gradually beam column type guardrail 1, changeover portion 2, transition wing wall 3, bridge concrete guardrail narrowing section 4 along highway central authorities' separate zone bridge concrete guardrail gradual change section 6 and bridge concrete guardrail standard section 5, beam column type guardrail 1 and changeover portion 2 fixed connection.
The width of the transition section 2 is the same as that of the beam-column guardrail 1, and the height of the transition section is the same as that of the lower bottom surface of the uppermost beam 13 in the beam-column guardrail 1.
The height of the standard section 5 of the bridge concrete guardrail is lower than that of the transition section 2.
The height of transition wing wall 3, bridge concrete guardrail narrowing section 4 is the same with changeover portion 2, transition wing wall 3 and bridge concrete guardrail narrowing section 4 are the inclined plane towards two sides of highway to the width is increased to the width the same with bridge concrete guardrail standard section 5 by the width of changeover portion 2.
The width of the bridge concrete guardrail transition section 6 is the same as that of the bridge concrete guardrail standard section 5, and the height of the bridge concrete guardrail transition section 6 is gradually reduced to the height which is the same as that of the bridge concrete guardrail standard section 5.
The inclination of 3 two sides of transition wing wall is 7, the inclination of 4 two sides of bridge concrete guardrail narrow section is 1.
The crossbeam 13 that lies in the top in beam column type guardrail 1 passes through buried bolt 131 and the top surface fixed connection of changeover portion 2 in advance.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention.
Claims (10)
1. The utility model provides a highway central separation area beam column type guardrail changeover portion, its characterized in that, includes beam column type guardrail, changeover portion, transition wing wall, bridge concrete guardrail narrowing section, bridge concrete guardrail standard section, sets gradually beam column type guardrail, changeover portion, transition wing wall, bridge concrete guardrail narrowing section and bridge concrete guardrail standard section on the central separation area of following highway, beam column type guardrail and changeover portion fixed connection.
2. The highway center divider beam-column guardrail transition section of claim 1, further comprising a bridge concrete guardrail transition section disposed between a bridge concrete guardrail narrowing section and a bridge concrete guardrail standard section.
3. The transition section of the central division strip beam column type guardrail of the expressway according to claim 1 or 2, wherein the beam column type guardrail comprises a concrete surface layer, an upright post, a cross beam longitudinal support component and a cross beam transverse connection reinforcing component, the concrete surface layer is arranged on the central division strip of the expressway, the lower end of the upright post is arranged in the concrete surface layer and extends to the ground layer, three cross beams are sequentially arranged on two sides of the upright post facing two driving directions of the expressway from top to bottom, each cross beam is connected with the upright post through the cross beam longitudinal support component in the longitudinal direction, each cross beam is connected and lengthened through the cross beam transverse connection reinforcing component in the transverse direction, and the cross beams on two sides of the top of the upright post are fixedly connected with the upright post through a top plate and a.
4. The transition section of a central division beam-column guardrail of a highway according to claim 3, wherein the width of the transition section is the same as that of the beam-column guardrail, and the height of the transition section is the same as that of the lower bottom surface of the uppermost beam in the beam-column guardrail.
5. The transition section of the central division beam column type guardrail of the expressway of claim 4, wherein the height of the transition wing wall and the narrowing section of the concrete guardrail of the expressway is the same as that of the transition section, the two sides of the transition wing wall and the narrowing section of the concrete guardrail of the expressway are inclined, and the width of the transition section is increased from the width of the transition section to the same width as that of the standard section of the concrete guardrail of the expressway.
6. The transition section of the expressway center divider beam column guardrail of claim 5, wherein the transition section of the concrete bridge guardrail has the same width as the standard section of the concrete bridge guardrail and gradually reduces the height to the same height as the standard section of the concrete bridge guardrail.
7. The transition section of the beam-column type guardrail of the central separation zone of the expressway of claim 6, wherein the beam positioned at the top in the beam-column type guardrail is fixedly connected with the top surface of the transition section through longitudinally arranged embedded bolts, and the beam extending into the transition section is fixedly connected with the side surface of the transition section through transversely arranged embedded bolts.
8. The transition section of the post guardrail of the central separation band of the expressway of claim 7, wherein the longitudinal beam support assembly comprises L-shaped support members and connecting bolts, the L-shaped support members are arranged at the upper side and the lower side of the beam, and the vertical surface of the L-shaped support member is fixedly connected with the upright post through two connecting bolts in parallel.
9. The transition section of the post guardrail of the central division strip of the highway according to claim 8, wherein the transverse beam connection reinforcement assembly comprises an inner sleeve and a splicing bolt, the inner sleeve is transversely arranged in the two sections of the transverse beams and is fixedly connected with the two sections of the transverse beams through the splicing bolts.
10. The transition section of a highway center divider beam column guardrail according to claim 9, further comprising a post reinforcement beam embedded in the lower portion of the post and connected to the post by a bolt, wherein a portion of the post reinforcement beam is located in the concrete surface layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021123274.7U CN212582523U (en) | 2020-06-17 | 2020-06-17 | Expressway central separation strip beam column type guardrail transition section |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021123274.7U CN212582523U (en) | 2020-06-17 | 2020-06-17 | Expressway central separation strip beam column type guardrail transition section |
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| CN212582523U true CN212582523U (en) | 2021-02-23 |
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| CN202021123274.7U Active CN212582523U (en) | 2020-06-17 | 2020-06-17 | Expressway central separation strip beam column type guardrail transition section |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113293693A (en) * | 2021-05-12 | 2021-08-24 | 广东省交通规划设计研究院集团股份有限公司 | Pier anti-collision device on width-limited central separation belt |
| CN114411550A (en) * | 2022-02-17 | 2022-04-29 | 中铁二院工程集团有限责任公司 | Transition connection structure of metal beam column type guardrail and concrete guardrail |
-
2020
- 2020-06-17 CN CN202021123274.7U patent/CN212582523U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113293693A (en) * | 2021-05-12 | 2021-08-24 | 广东省交通规划设计研究院集团股份有限公司 | Pier anti-collision device on width-limited central separation belt |
| CN114411550A (en) * | 2022-02-17 | 2022-04-29 | 中铁二院工程集团有限责任公司 | Transition connection structure of metal beam column type guardrail and concrete guardrail |
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