CN114164756A - Light high-strength assembly type bridge anti-collision guardrail - Google Patents
Light high-strength assembly type bridge anti-collision guardrail Download PDFInfo
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- CN114164756A CN114164756A CN202111580413.8A CN202111580413A CN114164756A CN 114164756 A CN114164756 A CN 114164756A CN 202111580413 A CN202111580413 A CN 202111580413A CN 114164756 A CN114164756 A CN 114164756A
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- prefabricated
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/10—Railings; Protectors against smoke or gases, e.g. of locomotives; Maintenance travellers; Fastening of pipes or cables to bridges
- E01D19/103—Parapets, railings ; Guard barriers or road-bridges
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- Engineering & Computer Science (AREA)
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- Structural Engineering (AREA)
- Refuge Islands, Traffic Blockers, Or Guard Fence (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention discloses a light high-strength assembly type bridge anti-collision guardrail, which comprises: prefabricating an anti-collision guardrail, a prefabricated bridge deck and a flange connecting piece; the prefabricated anti-collision guardrail comprises a guardrail body, wherein angle steel extending the whole length and a high-strength bolt extending out of the angle steel are embedded in the guardrail body; the two side panels of the prefabricated anti-collision guardrail are divided into a head-on collision panel and a back collision panel; the prefabricated bridge deck comprises a bridge deck body, high-strength bolts and channel steel, wherein the channel steel extending the whole length and the high-strength bolts extending out are embedded in the bridge deck body; the flange connecting piece is used for fastening the prefabricated anti-collision guardrail and the extended high-strength bolt of the prefabricated bridge deck; the angle steel of the whole length of pre-buried extension in the guardrail body and this internal pre-buried channel-section steel welded connection who extends whole length of bridge floor board. The bridge anti-collision guardrail has the advantages of light dead weight, high strength, easy replacement, realization of industrialization, standardization, short construction period and controllable construction quality.
Description
Technical Field
The invention relates to the technology of bridge anti-collision guardrails, in particular to a light high-strength assembly type bridge anti-collision guardrail.
Background
The bridge anti-collision guardrail is one of the important components of the auxiliary facilities of bridge engineering, and plays an important role in preventing vehicles from rushing out of a bridge, guaranteeing the life and property safety of passengers and avoiding causing great loss. However, with the continuous development of the highway construction requirements and the bridge construction concept in China, the existing bridge anti-collision guardrail has a plurality of problems, and mainly has the following points:
1. at present, most of the anti-collision guardrails applied to bridge engineering in China are reinforced concrete anti-collision guardrails and metal beam column type anti-collision guardrails. The reinforced concrete anti-collision guardrail belongs to the rigid guardrail, can effectively prevent a vehicle from rushing out of a bridge, but can not buffer energy consumption because the vehicle and personnel are seriously damaged, and the guardrail has overlarge dead weight, so that the load on the bridge is increased. The metal beam column type anti-collision guardrail belongs to a semi-rigid guardrail and has good permeability and landscape effect, but has some defects and insufficiencies in structural design and can not achieve necessary safety protection performance.
2. The traditional reinforced concrete anti-collision guardrail adopts a cast-in-place construction method in a construction site, the method needs a large amount of templates, a large amount of labor force, great environmental pollution, long construction period and difficult guarantee of construction quality, and particularly, the shrinkage creep of the concrete after construction can greatly influence the bearing capacity of the concrete; in the using process of the guardrail, due to reasons such as insufficient durability design and the like, the phenomena of weakening of a steel bar protective layer, bare corrosion of steel bars, reduction of concrete strength and the like can be caused, so that the anti-collision performance of the guardrail is further deteriorated, and huge potential safety hazards are brought to vehicles and personnel; and traditional reinforced concrete crash barrier is difficult in the maintenance after receiving the impact, is difficult for changing, is unfavorable for the sustainable development of bridge.
Disclosure of Invention
The invention aims to solve the technical problem of providing a light-weight high-strength fabricated bridge anti-collision guardrail aiming at the defects in the prior art.
The technical scheme adopted by the invention for solving the technical problems is as follows: the utility model provides a but light weight high strength assembled bridge anticollision barrier, includes: prefabricating an anti-collision guardrail, a prefabricated bridge deck and a flange connecting piece;
the prefabricated anti-collision guardrail comprises a guardrail body, wherein angle steel extending the whole length and a high-strength bolt extending out of the angle steel are embedded in the guardrail body; two side face plates of the prefabricated anti-collision guardrail are respectively a collision-facing panel and a back collision-facing panel, and common steel bars are pre-embedded in the collision-facing panel;
the prefabricated bridge deck comprises a bridge deck body, high-strength bolts and channel steel, wherein the channel steel extending the whole length and the high-strength bolts extending out are embedded in the bridge deck body;
the flange connecting piece is used for fastening the prefabricated anti-collision guardrail and the extended high-strength bolt of the prefabricated bridge deck;
the angle steel of the whole length of pre-buried extension in the guardrail body and this internal pre-buried channel-section steel welded connection who extends whole length of bridge floor board.
According to the scheme, the prefabricated guardrail is poured into a hollow structure, the hollow structure comprises a plurality of longitudinal rib plates and transverse rib plates which are arranged at intervals, and chamfers are arranged at the intersection between the longitudinal rib plates and the transverse rib plates and the intersection between the rib plates and the panel.
According to the scheme, the lower part of the prefabricated guardrail, which is close to the end of the back-collision panel, is provided with a groove for placing the flange connecting piece.
According to the scheme, the prefabricated anti-collision guardrail and the prefabricated bridge deck are prefabricated in a segmental mode, and the prefabricated anti-collision guardrail and the prefabricated bridge deck are configured in a 4-to-1 ratio.
According to the scheme, each section of the prefabricated anti-collision guardrail is fastened with the corresponding high-strength bolt of the prefabricated bridge deck through the flange connecting piece through the high-strength bolts arranged at the two ends of the lower part of the prefabricated guardrail and extending out.
According to the scheme, the prefabricated anti-collision guardrail is formed by prefabricating ultrahigh-performance concrete.
According to the scheme, when the embedded high-strength bolt is embedded, positioning steel bars are arranged in the bridge deck and the guardrail, and the embedded high-strength bolt is welded with the positioning steel bars.
A method for installing a light high-strength assembly type bridge anti-collision guardrail comprises the following steps:
1) installing templates in a factory, pouring ultrahigh-performance concrete in the factory to prefabricate the guardrail body, pouring the guardrail body into a hollow structure, arranging a plurality of longitudinal rib plates and transverse rib plates in the guardrail hollow structure at certain intervals, pouring high-strength bolts and angle steels, common reinforcing steel bars and positioning reinforcing steel bars in the body during prefabrication, and transporting the guardrail body to a site after maintenance; when the prefabricated bridge deck slab is poured, the high-strength bolts and the channel steel are poured into the bridge deck slab body together;
2) placing a screw hole of the flange connecting piece into a position corresponding to a high-strength bolt extending out of the prefabricated bridge deck, and fastening the high-strength bolt through a nut to realize the connection of the flange connecting piece and the prefabricated bridge deck;
3) inserting high-strength bolts extending out of the prefabricated guardrail into positions corresponding to screw holes of the flange connecting piece, and fastening the high-strength bolts through nuts to realize the connection of the flange connecting piece and the prefabricated guardrail;
4) and after the bolts are fastened, welding the embedded angle steel in the prefabricated guardrail and the embedded channel steel in the prefabricated bridge deck, so that the prefabricated guardrail and the prefabricated bridge deck are integrated.
The invention has the following beneficial effects:
1. the construction period is short: the guardrail can be industrially produced in a factory and then assembled on a construction site, so that the construction period can be greatly shortened.
2. The construction quality is high: the guardrail can realize standardized production in the mill, is not influenced by other factors such as weather and artificial technology during site operation, and the quality is more guaranteed than site operation, can effective control construction quality.
3. Easy replacement: the guardrail with the connection of decking adopts flange joint and welded connection, when the guardrail damages or needs to be changed, changes the convenience.
4. The advantages of the connection-type fitting are explained below: the front part is connected by welding, the rear part is connected by flanges, and the two connection modes are simple, easy, efficient and quick on the premise of realizing safe and reliable connection of the guardrail and the bridge deck and have better durability and replaceability.
5. Good performance and light dead weight: the guardrail is prefabricated by adopting the ultra-high performance concrete, compared with a common concrete material, the ultra-high performance concrete has the characteristics of high strength and high toughness, can play an effective energy absorption and energy consumption role, has high durability, can effectively improve the service life, and reduces the later-period management and maintenance cost; the guardrail structure is hollow structure, can lighten the guardrail dead weight greatly to reduce the second phase dead load of bridge.
6. Compared with field production, the guardrail has small influence on the environment and is beneficial to green construction.
Drawings
The invention will be further described with reference to the accompanying drawings and examples, in which:
FIG. 1 is a schematic view of a crash barrier configuration according to an embodiment of the present invention; (ii) a
FIG. 2 is a three-dimensional schematic view of the connection between the prefabricated guard rail and the prefabricated bridge deck according to the embodiment of the invention;
FIG. 3 is a three-dimensional schematic view of a prefabricated safety barrier according to an embodiment of the present invention;
FIG. 4 is a top cross-sectional view of a prefabricated safety barrier of an embodiment of the present invention;
FIG. 5 is a three-dimensional schematic view of a prefabricated bridge deck of an embodiment of the present invention;
FIG. 6 is a top cross-sectional view of a prefabricated bridge deck of an embodiment of the present invention;
FIG. 7 is a three-dimensional schematic view of a flanged connection according to an embodiment of the invention;
FIG. 8 is a top cross-sectional view of a flanged connection according to an embodiment of the invention.
In the figure: 1-prefabricating a guardrail; 2-prefabricating a bridge deck; 3-a flange connection; 4-a screw cap; 5-high strength bolt: 6-a screw cap; 7-high strength bolts; 8-angle steel; 9-channel steel.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following 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.
As shown in fig. 1, a light-weight, high-strength and assemblable bridge crash barrier comprises a prefabricated crash barrier 1, a prefabricated bridge deck 2 and a flange connecting member 3;
as shown in fig. 5 and 6, the prefabricated bridge deck comprises a bridge deck body, high-strength bolts 5 and channel steel 9, wherein the channel steel 9 extending the whole length and the high-strength bolts 5 extending out are embedded in the bridge deck body;
as shown in fig. 2, 3 and 4, the prefabricated crash barrier comprises a barrier body, high-strength bolts 7 and angle steel 8, wherein the angle steel 8 extending the whole length and the high-strength bolts 7 extending out are embedded in the barrier body; the two side panels of the prefabricated anti-collision guardrail are divided into a collision-facing panel and a back collision-facing panel, and common steel bars are pre-embedded in the collision-facing panel;
as shown in fig. 7 and 8, the flange connecting piece fastens the high-strength bolt 7 extending out of the prefabricated anti-collision guardrail and the high-strength bolt 5 extending out of the prefabricated bridge deck through the nut 6 and the nut 4, and welds the angle steel 8 embedded in the prefabricated anti-collision guardrail and the channel steel 9 embedded in the prefabricated bridge deck to connect the prefabricated anti-collision guardrail 1 and the prefabricated bridge deck 2.
The prefabricated anti-collision guardrail 1 is prefabricated in sections, templates are installed in a factory, the factory adopts ultra-high performance concrete for pouring and prefabricating, a hollow structure is poured, a plurality of longitudinal rib plates and transverse rib plates are arranged at certain intervals, the prefabricated anti-collision guardrail 1 is produced by factory prefabrication and is not influenced by other factors such as weather, the production quality and the maintenance condition can be effectively guaranteed, and the prefabricated anti-collision guardrail is transported to a site for assembly after maintenance, so that the construction period can be greatly shortened; the prefabricated anti-collision guardrail 1 is prefabricated into a hollow structure, so that the self weight of the guardrail can be greatly reduced, and the second-stage constant load of the bridge is reduced; the ultra-high performance concrete has good mechanical property, has the characteristics of high strength, high toughness and high durability, can play an effective energy absorption and energy consumption role, can effectively improve the service life, and reduces the later management and maintenance cost.
High-strength bolts 7 and angle steels 8, common reinforcing steel bars and positioning reinforcing steel bars are poured into a body when the anti-collision guardrail 1 is prefabricated, a plurality of longitudinal rib plates and transverse rib plates in the anti-collision guardrail 1 are prefabricated, and chamfers are arranged at the intersections between the longitudinal rib plates and the transverse rib plates and the intersections between the rib plates and the face plates so as to reduce stress concentration;
the lower end of the prefabricated anti-collision guardrail 1 is provided with a groove, the groove is used for placing a flange connecting piece 3, a screw hole of the flange connecting piece 3 is placed in a position corresponding to a high-strength bolt 5 extending out of the prefabricated bridge deck, and the high-strength bolt 5 is fastened through a nut 4, so that the flange connecting piece 3 is connected with the prefabricated bridge deck 2; similarly, inserting the high-strength bolts 7 extending out of the prefabricated guardrail into the corresponding positions of the screw holes of the flange connecting piece 3, and fastening the high-strength bolts 7 through nuts 6 to realize the connection of the flange connecting piece 3 and the prefabricated anti-collision guardrail 1; after the bolts 4 and the bolts 6 are fastened, the embedded angle steel 8 in the prefabricated guardrail and the embedded channel steel 9 in the prefabricated bridge deck are welded by groove welding, so that the prefabricated guardrail 1 and the prefabricated bridge deck 2 are integrally formed, the stability of the guardrail is improved, and the prefabricated anti-collision guardrail and the prefabricated bridge deck are configured in a 4-to-1 or 5-to-1 mode.
A method for installing a light high-strength assembly type bridge anti-collision guardrail comprises the following steps:
the first step is as follows: installing templates in a factory, pouring ultrahigh-performance concrete in the factory to prefabricate the guardrail body, pouring the guardrail body into a hollow structure, arranging a plurality of longitudinal rib plates and transverse rib plates in the guardrail hollow structure at certain intervals, pouring high-strength bolts and angle steels, common reinforcing steel bars and positioning reinforcing steel bars in the body during prefabrication, and transporting the guardrail body to a site after maintenance; when the prefabricated bridge deck slab is poured, the high-strength bolts and the channel steel are poured into the bridge deck slab body together;
the second step is that: placing a screw hole of the flange connecting piece into a position corresponding to a high-strength bolt extending out of the prefabricated bridge deck, and fastening the high-strength bolt through a nut to realize the connection of the flange connecting piece and the prefabricated bridge deck;
the third step: inserting high-strength bolts extending out of the prefabricated guardrail into positions corresponding to screw holes of the flange connecting piece, and fastening the high-strength bolts through nuts to realize the connection of the flange connecting piece and the prefabricated guardrail;
the fourth step: and after the bolts are fastened, welding the embedded angle steel in the prefabricated guardrail and the embedded channel steel in the prefabricated bridge deck, so that the prefabricated guardrail and the prefabricated bridge deck are integrated.
It will be understood that modifications and variations can be made by persons skilled in the art in light of the above teachings and all such modifications and variations are intended to be included within the scope of the invention as defined in the appended claims.
Claims (8)
1. The utility model provides a but light weight high strength assembled bridge anticollision barrier which characterized in that includes: prefabricating an anti-collision guardrail, a prefabricated bridge deck and a flange connecting piece;
the prefabricated anti-collision guardrail comprises a guardrail body, wherein angle steel extending the whole length and a high-strength bolt extending out of the angle steel are embedded in the guardrail body; two side face plates of the prefabricated anti-collision guardrail are respectively a head-on collision panel and a back collision panel;
the prefabricated bridge deck comprises a bridge deck body, high-strength bolts and channel steel, wherein the channel steel extending the whole length and the high-strength bolts extending out are embedded in the bridge deck body;
the flange connecting piece is used for fastening the prefabricated anti-collision guardrail and the extended high-strength bolt of the prefabricated bridge deck;
the angle steel of the whole length of pre-buried extension in the guardrail body and this internal pre-buried channel-section steel welded connection who extends whole length of bridge floor board.
2. The light-weight high-strength assembly-type bridge anti-collision guardrail according to claim 1, characterized in that the prefabricated guardrail is poured into a hollow structure, the hollow structure comprises a plurality of longitudinal ribs and transverse ribs which are arranged at intervals, and chamfers are arranged at the intersections between the longitudinal ribs and the transverse ribs and at the intersections between the ribs and the face plates.
3. The lightweight, high-strength and assemblable bridge crash barrier as recited in claim 1, wherein a groove for receiving a flange connection is formed in a lower portion of said prefabricated barrier adjacent to the end of the rear impact panel.
4. The lightweight, high-strength, assemblable bridge crash barrier of claim 1, wherein said prefabricated crash barrier and prefabricated deck slab are prefabricated in segments, the prefabricated crash barrier and prefabricated deck slab being in a 4 to 1 configuration.
5. The lightweight high-strength assemblable bridge anti-collision guardrail of claim 1, wherein each section of the prefabricated anti-collision guardrail is fastened with the corresponding high-strength bolt of the prefabricated bridge deck through a flange connector by high-strength bolts arranged at two ends of the lower part of the prefabricated guardrail and extending out.
6. The lightweight, high-strength assemblable bridge crash barrier of claim 1, wherein said prefabricated crash barrier is prefabricated from ultra-high performance concrete.
7. The light weight, high strength and assemblable bridge anti-collision guardrail of claim 1, wherein the pre-embedded high strength bolts are provided with positioning bars in the bridge deck and the guardrail during pre-embedding, and the pre-embedded high strength bolts are welded with the positioning bars.
8. A method of installing a lightweight, high strength, assemblable bridge crash barrier as defined in claim 1, comprising the steps of:
1) installing templates in a factory, pouring ultrahigh-performance concrete in the factory to prefabricate the guardrail body, pouring the guardrail body into a hollow structure, arranging a plurality of longitudinal rib plates and transverse rib plates in the guardrail hollow structure at certain intervals, pouring high-strength bolts and angle steels, common reinforcing steel bars and positioning reinforcing steel bars in the body during prefabrication, and transporting the guardrail body to a site after maintenance; when the prefabricated bridge deck slab is poured, the high-strength bolts and the channel steel are poured into the bridge deck slab body together;
2) placing a screw hole of the flange connecting piece into a position corresponding to a high-strength bolt extending out of the prefabricated bridge deck, and fastening the high-strength bolt through a nut to realize the connection of the flange connecting piece and the prefabricated bridge deck;
3) inserting high-strength bolts extending out of the prefabricated guardrail into positions corresponding to screw holes of the flange connecting piece, and fastening the high-strength bolts through nuts to realize the connection of the flange connecting piece and the prefabricated guardrail;
4) and after the bolts are fastened, welding the embedded angle steel in the prefabricated guardrail and the embedded channel steel in the prefabricated bridge deck, so that the prefabricated guardrail and the prefabricated bridge deck are integrated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111580413.8A CN114164756A (en) | 2021-12-22 | 2021-12-22 | Light high-strength assembly type bridge anti-collision guardrail |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111580413.8A CN114164756A (en) | 2021-12-22 | 2021-12-22 | Light high-strength assembly type bridge anti-collision guardrail |
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| CN114164756A true CN114164756A (en) | 2022-03-11 |
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| CN202111580413.8A Pending CN114164756A (en) | 2021-12-22 | 2021-12-22 | Light high-strength assembly type bridge anti-collision guardrail |
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| JP2008095363A (en) * | 2006-10-11 | 2008-04-24 | Fair Design:Kk | Guard fence |
| CN108824189A (en) * | 2018-07-16 | 2018-11-16 | 广州市市政工程设计研究总院有限公司 | A kind of steel plate connection prefabricated assembling type reinforced concrete side crashproof guardrail |
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| CN110230253A (en) * | 2019-04-15 | 2019-09-13 | 中国公路工程咨询集团有限公司 | A kind of bridge floor built-in fitting basis and its manufacturing method |
| CN110725201A (en) * | 2019-11-18 | 2020-01-24 | 深圳市市政设计研究院有限公司 | Prefabricated assembled light-duty crashproof guardrail that excels in of bridge |
| CN111270606A (en) * | 2020-02-11 | 2020-06-12 | 山东省交通规划设计院有限公司 | Connecting structure of assembled steel bridge floor concrete anti-collision guardrail and complete construction method thereof |
| CN211312194U (en) * | 2019-11-26 | 2020-08-21 | 浙江宏日泰耐克新材料科技有限公司 | Prefabricated assembled UHPC hollow anti-collision guardrail component |
| CN111749364A (en) * | 2020-07-31 | 2020-10-09 | 西安建筑科技大学 | Assembly type composite wall based on C-shaped steel and construction method thereof |
| CN215052084U (en) * | 2021-03-24 | 2021-12-07 | 湖南省交通规划勘察设计院有限公司 | Connecting device between concrete anti-collision guardrail and accessory facilities |
| CN215164634U (en) * | 2021-01-13 | 2021-12-14 | 武汉源锦建材科技有限公司 | Prefabricated detachable light high-strength anti-collision guardrail |
-
2021
- 2021-12-22 CN CN202111580413.8A patent/CN114164756A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008095363A (en) * | 2006-10-11 | 2008-04-24 | Fair Design:Kk | Guard fence |
| CN108824189A (en) * | 2018-07-16 | 2018-11-16 | 广州市市政工程设计研究总院有限公司 | A kind of steel plate connection prefabricated assembling type reinforced concrete side crashproof guardrail |
| CN109162202A (en) * | 2018-10-30 | 2019-01-08 | 湖南大学 | A kind of light-duty assembled anticollision barrier component and installation method |
| CN110230253A (en) * | 2019-04-15 | 2019-09-13 | 中国公路工程咨询集团有限公司 | A kind of bridge floor built-in fitting basis and its manufacturing method |
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| CN111749364A (en) * | 2020-07-31 | 2020-10-09 | 西安建筑科技大学 | Assembly type composite wall based on C-shaped steel and construction method thereof |
| CN215164634U (en) * | 2021-01-13 | 2021-12-14 | 武汉源锦建材科技有限公司 | Prefabricated detachable light high-strength anti-collision guardrail |
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