CN118223400A - Anti-collision guardrail and construction method thereof - Google Patents
Anti-collision guardrail and construction method thereof Download PDFInfo
- Publication number
- CN118223400A CN118223400A CN202410439122.4A CN202410439122A CN118223400A CN 118223400 A CN118223400 A CN 118223400A CN 202410439122 A CN202410439122 A CN 202410439122A CN 118223400 A CN118223400 A CN 118223400A
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- China
- Prior art keywords
- shell
- guardrail
- module
- crash barrier
- steel bars
- 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
- 238000010276 construction Methods 0.000 title claims abstract description 34
- 230000004888 barrier function Effects 0.000 claims abstract description 27
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 23
- 239000010959 steel Substances 0.000 claims abstract description 23
- 239000004567 concrete Substances 0.000 claims abstract description 12
- 239000000463 material Substances 0.000 claims abstract description 9
- 239000011374 ultra-high-performance concrete Substances 0.000 claims description 11
- 238000000034 method Methods 0.000 claims description 9
- 239000004698 Polyethylene Substances 0.000 claims description 3
- 239000000919 ceramic Substances 0.000 claims description 3
- 239000002131 composite material Substances 0.000 claims description 3
- 239000000356 contaminant Substances 0.000 claims description 3
- 239000004811 fluoropolymer Substances 0.000 claims description 3
- 229920002313 fluoropolymer Polymers 0.000 claims description 3
- 239000012528 membrane Substances 0.000 claims description 3
- 239000002105 nanoparticle Substances 0.000 claims description 3
- -1 polyethylene Polymers 0.000 claims description 3
- 229920000573 polyethylene Polymers 0.000 claims description 3
- 230000001413 cellular effect Effects 0.000 claims 1
- 238000005260 corrosion Methods 0.000 abstract description 12
- 238000012423 maintenance Methods 0.000 abstract description 10
- 230000032683 aging Effects 0.000 abstract description 7
- 239000011150 reinforced concrete Substances 0.000 abstract description 6
- 239000003513 alkali Substances 0.000 abstract description 5
- 239000011440 grout Substances 0.000 abstract description 4
- 239000004574 high-performance concrete Substances 0.000 abstract description 4
- 150000003839 salts Chemical class 0.000 description 5
- 239000003973 paint Substances 0.000 description 3
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000011065 in-situ storage Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000009439 industrial construction Methods 0.000 description 1
- 238000007726 management method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000009417 prefabrication Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- 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
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Refuge Islands, Traffic Blockers, Or Guard Fence (AREA)
Abstract
The invention provides a crash barrier and a construction method thereof, comprising the following steps: guard bar steel bars fixedly connected to the main beams; the guardrail shell is fixedly connected to guardrail steel bars; wherein, the shell is prefabricated super high performance concrete material board shell structure of mill, is equipped with the grout mouth that is used for filling concrete above the shell. Therefore, the technical problems of long construction period, poor anti-corrosion aging, high cost and multiple management and maintenance requirements in the operation period caused by the adoption of a common reinforced concrete structure or a steel structure in the prior art are solved, and the requirements of quick construction and structural durability in a high-salt-alkali environment are met.
Description
Technical Field
The invention relates to the technical field of bridge engineering, in particular to an anti-collision guardrail and a construction method thereof.
Background
Based on the rapid construction requirement of the infrastructure and the new development guiding concept of energy conservation, environmental protection and low carbon, the design, construction and construction of the bridge member are changed to rapid, assembly and industrialization. The bridge anti-collision guardrail is used as an important part of the bridge auxiliary engineering, and also needs to adapt to new bridge design requirements under new situation. In the technical field of bridge engineering, crash barriers are currently generally treated by the following measures:
(1) The guardrail structure adopts a common reinforced concrete structure, is constructed by adopting a mode of embedding reinforcing steel bars and then casting the guardrail in situ, and improves the structural durability of the structure in deicing salt environment by adopting a mode of coating anti-corrosion paint on the outer surface, so that the construction period of the mode is long, the construction period cannot adapt to the requirements of rapid construction, the anti-corrosion aging is poor, and multiple times of tube culture are needed during operation.
(2) The steel structure guardrail is adopted to meet the requirement of quick construction, and the structural durability of the structure in deicing salt environment is improved in a mode of spraying anti-corrosion coating on the outer surface. The mode has high cost, poor corrosion resistance and aging, and needs to be managed and maintained for many times during operation.
Therefore, a novel anti-collision structure and a construction method thereof which not only meet the requirement of quick construction, but also meet the requirement of structural durability in a high-salt-alkali environment are lacking.
Disclosure of Invention
The invention aims to provide an anti-collision guardrail and a construction method thereof, which can meet the requirements of quick construction and structural durability in a high-salt-alkali environment, and solve the technical problems of long construction period, high cost, poor anti-corrosion aging and multiple management and maintenance in the operation period in the prior art.
According to one aspect of the present invention, there is provided a crash barrier comprising: guard bar steel bars fixedly connected to the main beams; the guardrail shell is fixedly connected to guardrail steel bars; wherein, the shell is prefabricated super high performance concrete material board shell structure of mill, is equipped with the grout mouth that is used for filling concrete above the shell.
Preferably, the housing is formed by a front facing module and a rear facing module, which together form the whole of the housing by means of a connecting fastener above.
Preferably, the front facing module and the back facing module together form the entirety of the housing by means of tie bars.
Preferably, the facing module and the backing module each comprise a plurality of standard length segments, and the facing modules and the backing modules of adjacent segments are connected through mortise and tenon toothed plates, and the mortise and tenon toothed plates are used as false joints.
Preferably, the crash barrier further comprises: and the honeycomb layer is positioned between the shell and the filled concrete and is used for reserving an air layer and maintaining the stability and uniformity of the air layer.
Preferably, the honeycomb layer comprises: an outer film, which adopts polyethylene with the thickness of 50 microns as a waterproof layer; the medium membrane is made of a ceramic nano particle composite material with the thickness of 100 microns and is used for preventing heat conduction; an inner film, a 50 micron thick fluoropolymer film, was used to prevent contaminant adhesion and moisture permeation.
According to another aspect of the present invention, there is provided a construction method of a crash barrier, comprising: installing guardrail steel bars on the main girder; installing a guardrail shell on guardrail steel bars, wherein the shell is of a factory prefabricated ultra-high performance concrete material plate-shell structure; and filling the concrete through a grouting opening above the shell.
Preferably, installing guardrail steel bars on the main beams comprises: a slot of width 2cm and depth 3cm is reserved for positioning and fixing the housing.
Preferably, after the guardrail housing is mounted to the guardrail bar, the method further comprises: the connection of the front facing module and the back facing module of the shell is fastened through the connecting fastener.
The invention provides a crash barrier and a construction method thereof, comprising the following steps: guard bar steel bars fixedly connected to the main beams; the guardrail shell is fixedly connected to guardrail steel bars; wherein, the shell is prefabricated super high performance concrete material board shell structure of mill, is equipped with the grout mouth that is used for filling concrete above the shell to solve the anticollision barrier and adopted the technical problem that ordinary reinforced concrete structure or steel construction caused construction cycle length, anticorrosive ageing are poor, with high costs, need many times management and maintenance during the operation.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and do not constitute a limitation on the invention. In the drawings:
FIG. 1 is an elevational view of the profile of a standard crash barrier according to the prior art;
FIG. 2 is an elevational view of the crash barrier according to an embodiment of the invention;
FIG. 3 is a top plan view of a crash barrier according to an embodiment of the invention; and
FIG. 4 is a BIM model diagram of a crash barrier in accordance with an embodiment of the invention;
The system comprises a vehicle facing module, a vehicle facing module and a vehicle driving module, wherein 1 is a vehicle facing module; 2. a back surface module; 3. concrete; 4. a main beam; 5. a notch; 6. auxiliary assembly of bridge deck; 7. a grouting port; 8. and connecting the fasteners.
Detailed Description
It should be noted that, without conflict, the embodiments of the present application and features of the embodiments may be combined with each other. The application will be described in detail below with reference to the drawings in connection with embodiments.
Reference will now be made in detail to the various embodiments of the invention, examples of which are illustrated in the accompanying drawings and described below. For convenience in explanation and accurate definition in the appended claims, the terms "upper", "lower", "inner" and "outer" are used to describe features of the exemplary embodiments with reference to the positions of such features as displayed in the figures.
Figure 1 shows an outline elevation of a standard crash barrier. As shown in fig. 1, the standard crash barrier adopts a common reinforced concrete structure, adopts embedded bars and is constructed in a back cast-in-place manner.
Fig. 2 and 4 show an outline elevation view and a BIM model view, respectively, of a crash barrier according to an embodiment of the present invention. As shown in fig. 2 and 4, the crash barrier includes: guard bar steel bars fixedly connected to the main beams; the guardrail shell is fixedly connected to guardrail steel bars; wherein, the shell is prefabricated super high performance concrete material board shell structure of mill, is equipped with the grout mouth that is used for filling concrete above the shell.
According to an embodiment of the invention, the shell is sized to be 2cm and the tip may be suitably thickened.
In the prior art, in order to improve structural durability of the anti-collision guardrail in deicing salt environment, the following construction modes are adopted: the common reinforced concrete structure is adopted, the steel bars are pre-buried firstly, then the guardrail is cast in situ, and then the anti-corrosion paint is coated on the outer surface to improve the structural durability of the anti-collision guardrail in the deicing salt environment, but the construction period of the method is long, and the method cannot meet the requirements of rapid construction; or a steel structure is adopted, and then the outer surface is sprayed with anti-corrosion paint to improve the structural durability of the structure in deicing salt environment, and the method has poor anti-corrosion aging although reaching the requirement of rapid construction, and needs multiple times of maintenance during operation. According to the embodiment of the invention, by providing the housing of the factory prefabricated ultra-high-performance concrete material, the ultra-high-performance concrete has a strong anti-corrosion function, particularly has strong durability in a high-salt-alkali environment, and the investment of multiple maintenance and management cost of the structure in the operation and maintenance period is avoided; meanwhile, the anti-collision guardrail shell can be prefabricated in factories and assembled on site, so that the construction period is shortened, and the purposes of rapidness, standardization and industrial construction are achieved. Solves the problems of long construction period, poor corrosion resistance and aging, high cost, need of multiple times of management and maintenance and the like in the related technology.
Fig. 3 shows a top plan view of a crash barrier in accordance with an embodiment of the invention. As shown in fig. 3, the housing of the crash barrier is composed of a front-facing module and a back-facing module, which together form the whole of the housing by means of a connecting fastener above.
According to the embodiment of the invention, the vehicle facing module is arranged according to the standard required size, and the back surface module is provided with hanging plates, decorative textures or enlarged shapes according to the actual engineering requirements to meet the pre-buried foundation requirements of lamp posts, signboards and the like for special construction treatment.
According to the embodiment of the invention, the front facing module and the back facing module form the whole of the shell together through the opposite-pulling reinforcing steel bars.
According to the embodiment of the invention, the facing module and the backing module comprise a plurality of standard length segments, the segments can be generally divided into 2m segments or other straight line or curve segment length combinations suitable for prefabrication and transportation, and the facing modules and the backing modules of adjacent segments are connected through mortise and tenon toothed plates which are used as false joints.
According to an embodiment of the invention, the crash barrier further comprises: and the honeycomb layer is positioned between the shell and the filled concrete and is used for reserving an air layer and maintaining the stability and uniformity of the air layer.
According to an embodiment of the invention, the honeycomb layer comprises: an outer film, which adopts polyethylene with the thickness of 50 microns as a waterproof layer; the medium membrane is made of a ceramic nano particle composite material with the thickness of 100 microns and is used for preventing heat conduction; an inner film, a 50 micron thick fluoropolymer film, was used to prevent contaminant adhesion and moisture permeation.
In the related art, the anti-collision guardrail generally adopts a reinforced concrete structure or a steel structure, and has the technical problem of poor heat insulation effect. The embodiment of the invention effectively reduces the heat absorption of the shell and solves the difficult problem of poor heat insulation in the prior art by providing the shell with a special structure.
According to another embodiment of the present invention, there is provided a construction method of a crash barrier, including: installing guardrail steel bars on the main girder; installing a guardrail shell on guardrail steel bars, wherein the shell is of a factory prefabricated ultra-high performance concrete material plate-shell structure; and filling the concrete through a grouting opening above the shell.
According to an embodiment of the present invention, installing guardrail bars at a main beam includes: a slot of width 2cm and depth 3cm is reserved for positioning and fixing the housing.
According to an embodiment of the present invention, after the guardrail housing is mounted to the guardrail bar, the method further comprises: the connection of the front facing module and the back facing module of the shell is fastened through the connecting fastener.
The invention has the following effects:
(1) The anti-collision guardrail shell uses the ultra-high performance concrete, so that the size of the shell can be controlled by fully utilizing the stronger tensile property of the ultra-high performance concrete, the dosage of the ultra-high performance concrete is relatively small, and the cost is reduced to the greatest extent;
(2) The anti-collision guardrail shell uses the ultra-high performance concrete, so that the strong anti-corrosion function of the ultra-high performance concrete can be fully utilized, particularly the strong durability in a high-salt and alkali environment is achieved, and the investment of multiple maintenance and management and maintenance costs of the structure in the operation and maintenance period is avoided;
(3) The anti-collision guardrail shell can be prefabricated in factories and assembled on site, so that the construction period is shortened.
(4) The prefabricated shell can be used as a construction template, the construction and the dismantling of the template are reduced, and the next procedure can be performed without waiting for the strength of the guardrail to meet the requirement.
The above examples are only illustrative of the invention and are not intended to limit the embodiments of the invention. Various other changes, modifications, substitutions, and alterations herein will become apparent to those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (9)
1. A crash barrier, comprising:
Guard bar steel bars are fixedly connected to the main beams (4);
the guardrail shell is fixedly connected with the guardrail steel bars;
The shell is of a prefabricated ultra-high performance concrete material plate shell structure, and a grouting opening (7) for filling concrete (3) is arranged above the shell.
2. The crash barrier according to claim 1, characterized in that the housing is formed by a front facing module (1) and a rear facing module (2), the front facing module (1) and the rear facing module (2) together forming the whole of the housing by means of an upper connecting fastener (8).
3. The crash barrier of claim 2 wherein said head-on module (1) and said back-side module (2) together form an integral body of said enclosure by means of tie bars.
4. The crash barrier of claim 2 wherein said facing module (1) and said backing module (2) each comprise a plurality of standard length segments, adjacent segments of said facing module (1) and said backing module (2) being connected by mortise and tenon tooth plates, said mortise and tenon tooth plates being used as false joints.
5. The crash barrier of claim 4 wherein said crash barrier further comprises:
A cellular layer, located between the casing and the filled concrete (3), for reserving an air layer and maintaining the stability and uniformity of the air layer.
6. The crash barrier of claim 5 wherein said honeycomb layer comprises:
an outer film, which adopts polyethylene with the thickness of 50 microns as a waterproof layer;
the medium membrane is made of a ceramic nano particle composite material with the thickness of 100 microns and is used for preventing heat conduction;
an inner film, a 50 micron thick fluoropolymer film, was used to prevent contaminant adhesion and moisture permeation.
7. The construction method of the crash barrier is characterized by comprising the following steps:
S1: installing guardrail steel bars on the main beam (4);
s2: installing a guardrail shell on the guardrail steel bars, wherein the shell is of a factory prefabricated ultra-high performance concrete material plate-shell structure;
s3: and filling the concrete (3) through a grouting opening (7) above the shell.
8. The method according to claim 7, wherein installing guardrail bars on the main beams (4) comprises:
A slot (5) of width 2cm and depth 3cm is reserved for positioning and fixing the housing.
9. The method of claim 8, wherein after installing a guardrail housing to the guardrail bar, the method further comprises:
the connection of the front facing module (1) and the back facing module (2) of the shell is fastened through a connecting fastener (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410439122.4A CN118223400A (en) | 2024-04-12 | 2024-04-12 | Anti-collision guardrail and construction method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410439122.4A CN118223400A (en) | 2024-04-12 | 2024-04-12 | Anti-collision guardrail and construction method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN118223400A true CN118223400A (en) | 2024-06-21 |
Family
ID=91511114
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202410439122.4A Pending CN118223400A (en) | 2024-04-12 | 2024-04-12 | Anti-collision guardrail and construction method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN118223400A (en) |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86207497U (en) * | 1986-10-25 | 1987-09-23 | 北京市建筑工程研究所 | Thermal insulating composite sheet with air-sealed sandwich |
| US5180619A (en) * | 1989-12-04 | 1993-01-19 | Supracor Systems, Inc. | Perforated honeycomb |
| JPH11323970A (en) * | 1998-05-20 | 1999-11-26 | Katsuya Hiraoka | Execution method for fence, flower bed, retaining wall, gatepost |
| CN202595662U (en) * | 2012-04-26 | 2012-12-12 | 施晓艳 | Anti-collision flexible road barrier |
| CN207032583U (en) * | 2017-07-09 | 2018-02-23 | 江西润家工程有限公司 | Fireproofing corrosion resistant loses purification color steel |
| CN207672476U (en) * | 2017-12-14 | 2018-07-31 | 四川西南交大土木工程设计有限公司 | Anticollision barrier constructs |
| CN209194330U (en) * | 2018-10-15 | 2019-08-02 | 长安大学 | A kind of bridge energy-absorbing anti-collision guardrail |
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| CN216339202U (en) * | 2021-09-07 | 2022-04-19 | 冠县盛世交通设施有限公司 | Self-cleaning type guardrail plate of ageing resistance |
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-
2024
- 2024-04-12 CN CN202410439122.4A patent/CN118223400A/en active Pending
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| US5180619A (en) * | 1989-12-04 | 1993-01-19 | Supracor Systems, Inc. | Perforated honeycomb |
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| CN207032583U (en) * | 2017-07-09 | 2018-02-23 | 江西润家工程有限公司 | Fireproofing corrosion resistant loses purification color steel |
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| CN216339202U (en) * | 2021-09-07 | 2022-04-19 | 冠县盛世交通设施有限公司 | Self-cleaning type guardrail plate of ageing resistance |
| CN218749674U (en) * | 2022-11-07 | 2023-03-28 | 广州市天外天环保新材料科技有限公司 | Long service life's honeycomb paper |
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