CN114351583A - Reinforced flexible anti-collision wall for highway bridge and construction method thereof - Google Patents
Reinforced flexible anti-collision wall for highway bridge and construction method thereof Download PDFInfo
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- CN114351583A CN114351583A CN202210033982.9A CN202210033982A CN114351583A CN 114351583 A CN114351583 A CN 114351583A CN 202210033982 A CN202210033982 A CN 202210033982A CN 114351583 A CN114351583 A CN 114351583A
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- collision wall
- prestressed steel
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- 238000010276 construction Methods 0.000 title claims abstract description 14
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 87
- 239000010959 steel Substances 0.000 claims abstract description 87
- 230000007246 mechanism Effects 0.000 claims abstract description 6
- 239000004567 concrete Substances 0.000 claims description 6
- 238000013461 design Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 206010039203 Road traffic accident Diseases 0.000 abstract description 13
- 230000001960 triggered effect Effects 0.000 abstract 1
- 230000008859 change Effects 0.000 description 4
- 239000011148 porous material Substances 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 230000008054 signal transmission Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 206010063385 Intellectualisation Diseases 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 239000011083 cement mortar Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
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Classifications
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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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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
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- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/01—Detecting movement of traffic to be counted or controlled
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D2101/00—Material constitution of bridges
- E01D2101/20—Concrete, stone or stone-like material
- E01D2101/24—Concrete
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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
- E01D2101/00—Material constitution of bridges
- E01D2101/20—Concrete, stone or stone-like material
- E01D2101/24—Concrete
- E01D2101/26—Concrete reinforced
- E01D2101/28—Concrete reinforced prestressed
Abstract
The invention provides a highway bridge reinforced flexible anti-collision wall and a construction method thereof, wherein the highway bridge reinforced flexible anti-collision wall comprises an anti-collision wall body, steering wheels, a plurality of prestressed steel strands, a signal transmitting device and a strain sensor; one side of the anti-collision wall body is longitudinally provided with a tensioned prestressed steel strand, a steering wheel is rotatably penetrated through the prestressed steel strand, and a strain sensor is arranged on the prestressed steel strand; the strain sensor is used for acquiring a strain value of the prestressed steel strand and transmitting the strain value to the signal transmitting device; and the signal transmitting device transmits the strain value of the prestressed steel strand to a receiving terminal at the center of the traffic transportation pipe, and when the strain value of the prestressed steel strand is greater than a preset threshold value, the receiving terminal triggers an alarm mechanism. When the anti-collision wall is impacted by a vehicle, the strain value of the steel beam changes suddenly, an early warning mechanism is triggered, the emergency handling efficiency of the traffic transportation and management center on road traffic accidents is improved, the accident rescue capacity is remarkably improved, and the intelligent management level of the road is favorably improved.
Description
Technical Field
The invention belongs to the field of bridge engineering, and particularly relates to a reinforced flexible anti-collision wall for a highway bridge and a construction method thereof; the invention is suitable for high pier bridges which have large clearance under deep water, deep valleys and bridges on high-grade roads.
Background
In recent years, with the continuous promotion of the construction of the infrastructure of China, high pier bridges spanning deep valleys, reservoir areas, rivers and oceans emerge continuously, and the bridge traffic safety facilities are advanced with time to deal with complex and heavy traffic conditions. The bridge anti-collision wall is used as the most important bridge construction, and the improvement of the function and the protection level of the bridge anti-collision wall becomes necessary. Traditional crashproof wall is in order to prevent that the vehicle of skew driving route from rushing out the bridge floor when the occurence of failure, adopts the reinforced concrete structure who constructs with the whole cast in situ of girder, and this kind of structure mainly relies on crashproof wall's structural rigidity to resist the vehicle striking, and the kinetic energy of the vehicle out of control who traveles at a high speed is whole to be converted into collision energy, causes very big harm to vehicle, navigating mate's safety.
At present, some anti-collision facilities for reducing the kinetic energy of the vehicle when the vehicle is collided are available in China. However, most of the facilities are in the form of anti-collision guardrails, compared with the traditional rigid anti-collision wall, the structural rigidity is obviously reduced, whether vehicles break the guardrails and fall into the bridge or not can not be guaranteed, and the anti-collision guardrail structure is difficult to apply to the actual engineering of high pier bridges.
In addition, the conventional method for manually monitoring the traffic accident is mainly adopted, so that the time for transmitting the dangerous case to the center of the traffic transportation pipe after the traffic accident occurs may be delayed, the accident handling and rescue efficiency is influenced, and the life and property loss of the traffic accident is aggravated to a certain extent.
Disclosure of Invention
The invention aims to provide a reinforced flexible anti-collision wall for a highway bridge and a construction method thereof, and mainly solves the problems of overcoming the limitations of the existing bridge anti-collision wall, reducing the damage of accidents to vehicles and drivers and improving the emergency disposal efficiency of traffic accidents.
The invention is realized by the following technical scheme:
a highway bridge reinforced flexible anti-collision wall comprises an anti-collision wall body, a steering wheel, a plurality of prestressed steel strands, a signal transmitting device and a strain sensor;
one side of the anti-collision wall body is longitudinally provided with a tensioned prestressed steel strand, a steering wheel is rotatably penetrated through the prestressed steel strand, and a strain sensor is arranged on the prestressed steel strand;
the strain sensor is used for acquiring a strain value of the prestressed steel strand and transmitting the strain value to the signal transmitting device;
and the signal transmitting device transmits the strain value of the prestressed steel strand to a receiving terminal at the center of the traffic transportation pipe, and when the strain value of the prestressed steel strand is greater than a preset threshold value, the receiving terminal triggers an alarm mechanism.
Preferably, one side of the anti-collision wall body is provided with a groove along the trend of the bridge, the steering wheel is positioned in the groove of the anti-collision wall body, and the edge of the steering wheel extends out of the groove of the steering wheel.
Preferably, the anti-collision wall body is arranged on the bridge girder, and the prestressed steel strands are arranged in a manner of vertically penetrating through the anti-collision wall body and the bridge girder.
Furthermore, the upper end of the prestressed steel strand is fixed at the top of the anti-collision wall body through a first anchor block, and the lower end of the prestressed steel strand is fixed on the bridge girder through a second anchor block.
Preferably, two steering wheels are arranged on each prestressed steel strand in a penetrating mode.
Preferably, the top of the anti-collision wall body is provided with a railing.
Preferably, the strain sensor is a vibrating wire type steel cable strain sensor, and the vibrating wire type steel cable strain sensor is fixed at the upper end of the prestressed steel strand through locking blocks at two ends.
Preferably, the steering wheel is made of rubber.
Preferably, the anti-collision wall body is of a concrete structure.
The construction method of the reinforced flexible anti-collision wall of the highway bridge comprises the following steps:
manufacturing an anti-collision wall body;
a steering wheel is fixed in the opening of the anti-collision wall body;
fixing a strain sensor on the prestressed steel strand;
a prestressed steel strand provided with a strain sensor is inserted in the steering wheel;
stretching the prestressed steel strand at two ends to a stretching design value, and fixing the two ends of the prestressed steel strand;
and installing a signal transmitting device.
Compared with the prior art, the invention has the following beneficial effects:
the steering wheel is arranged, when a vehicle impacts an anti-collision wall, the steering wheel rotates under the action of positive impact force, the driving direction of the vehicle is guided, and the vehicle is prevented from rushing out of a bridge; the directive wheel and the prestress steel strand are in coordination with each other for collision avoidance, so that the impact kinetic energy of the vehicle is dissipated, the collision avoidance effect is obvious, the damage to the accident vehicle and the driver can be reduced, and the damage to the bridge structure can also be reduced. Install strain sensor on the prestressing force steel strand wires, a strain value for monitoring prestressing force steel strand wires, strain sensor transmits strain value to signal transmission device, signal transmission device transmits prestressing force steel strand wires's strain value for the receiving terminal at traffic fortune pipe center, when the anticollision wall receives the vehicle striking, steel bundle strain value takes place the sudden change, receiving terminal triggers the early warning mechanism, to traffic fortune pipe center suggestion steel bundle strain value take place the sudden change, traffic accident probably appears, traffic fortune pipe center's emergent processing efficiency to road traffic accident has been improved, it can show the promotion to make accident rescue ability, help promoting highway intelligent management level. The invention realizes the effective improvement of the operation efficiency, the safety level and the service quality of the road traffic safety facility, and promotes the development of new traffic infrastructure towards digitization, intellectualization and systematization.
Furthermore, the prestressed steel strands vertically penetrate through the anti-collision wall body and the bridge girder, integrity of the anti-collision wall and the girder can be enhanced, and impact kinetic energy when a vehicle is impacted is reduced.
The invention has simple structure, is beneficial to improving the construction efficiency, shortens the construction period of the bridge and saves the cost of the bridge.
Drawings
Fig. 1 is a structural axonometric view (a) and a structural view (b) of an anti-collision device of a reinforced flexible anti-collision wall structure of a highway bridge according to an embodiment of the invention;
FIG. 2 is a top view of a reinforced flexible impact wall structure for a highway bridge according to an embodiment of the present invention;
FIG. 3 is a front view of a reinforced flexible impact wall structure for a highway bridge according to an embodiment of the present invention;
fig. 4 is a structural side view of a reinforced flexible highway bridge impact wall construction in accordance with an embodiment of the present invention.
Description of reference numerals:
1, a handrail; 2-a signal emitting device; 3-a first anchor block; 4-concrete anti-collision wall; 5-a steering wheel; 6-prestressed steel strands; 7-bridge girder; 8-a second anchor block; 9-strain sensor.
Detailed Description
For a further understanding of the invention, reference will now be made to the following examples, which are provided to illustrate further features and advantages of the invention, and are not intended to limit the scope of the invention as set forth in the following claims.
As shown in fig. 1-4, a highway bridge reinforced flexible anti-collision wall structure mainly comprises an anti-collision wall body 4, a steering wheel 5, a prestressed steel strand 6, a first anchor block 3, a second anchor block 8, a signal transmitting device 2, a strain sensor 9, a railing 1 and related connecting and fixing members.
The strain sensor 9 is used for acquiring the strain value of the prestressed steel strand 6 and transmitting the strain value to the signal transmitting device 2.
The signal transmitting device 2 sends the strain value of the prestressed steel strand 6 to a receiving terminal at the center of the traffic transportation pipe, when a vehicle collides with an anti-collision wall, the prestressed steel strand 6 is obviously deformed, the strain value is suddenly changed, namely when the strain value of the prestressed steel strand 6 is greater than 2% of the stress length of the steel strand, the receiving terminal triggers an alarm mechanism to prompt the traffic transportation pipe center that the strain value of the prestressed steel strand 6 is suddenly changed, and traffic accidents are possibly caused. 2% of the stress length of the steel strand is selected according to the static load performance requirement of 5.2.1 steel strands of a No-adhesive steel strand external prestressed bundle JT/T853-2013' 5.2 section external bundle assembly part. Thereby improving the emergency response capability and rescue speed of traffic accidents.
In one embodiment of the present invention, the impact wall body 4 is a cast-in-place concrete structure. And crashproof wall body 4 is whole cast-in-place structure with the bridge girder to choose for use the structure focus lower, the stronger C style of calligraphy structure of stability, this structure is realized through the template. And a vertically through prestressed steel strand pore channel is reserved on the anti-collision wall body and the flange plate of the main beam of the bridge for mounting the prestressed steel strand 6. The inboard of crashproof wall body 4 is provided with the recess along the bridge trend promptly, and directive wheel 5 is located crashproof wall body 4's recess, and 5 edges on the directive wheel stretch out outside the recess of directive wheel 5.
In a specific embodiment of the invention, the prestressed steel strands 6 are vertically arranged to penetrate through the anti-collision wall and the main beam, the upper ends of the prestressed steel strands 6 are fixed to the top of the anti-collision wall body 4 through the first anchor blocks 3, and the lower ends of the prestressed steel strands 6 are fixed to the main beam 7 of the bridge through the second anchor blocks 8. The vertical prestress steel strand that runs through in the anticollision wall provides the redundancy for the deformation that the vehicle striking arouses to with the directive wheel synergism, change the direction of travel of vehicle after the striking.
In one embodiment of the invention, a rail 1 is mounted on the top of the impact wall body 4.
In one embodiment of the invention, two steering wheels 5 are arranged on each prestressed steel strand 6. The height of the single steering wheel 5 is 1/2 of the height of the lateral opening of the anti-collision wall body, and the middle aperture is slightly larger than the diameter of the prestressed steel strand.
In one embodiment of the invention, the strain sensor 9 is a wire rope strain sensor of the GSTP-ZX-392 type. The vibrating wire type steel cable strain sensor is tightly fixed on the upper half section of the prestressed steel strand 5, namely above the steering wheel, through locking blocks (clamps) at two ends.
In a specific embodiment of the invention, a signal transmitting device arranged above the anti-collision wall is connected with a strain sensor arranged on the prestressed steel strand through a wire, and the strain value of the prestressed steel strand is acquired in real time.
In one embodiment of the invention, the signal transmitting device 2 is controlled by an STM32F429 single-chip microcomputer and is arranged behind a guardrail on the top surface of the collision-proof wall.
In one embodiment of the invention, the steerable wheels are rubber.
The invention relates to a reinforced flexible highway bridge anti-collision wall structure, which comprises the following construction method steps:
the method comprises the steps of firstly, pouring a bridge girder 7, reserving a vertically through prestressed steel strand pore channel at the corresponding position of a flange plate of the bridge girder 7, and arranging a second anchor block 8 below the flange plate.
And step two, manufacturing the anti-collision wall body of the C-shaped cast-in-place concrete structure through a specially-made C-shaped template, reserving prestressed steel strand pore channels corresponding to the flange plates, pouring concrete into the template, vibrating fully, and maintaining to a designed strength value to obtain the anti-collision wall body 4.
And step three, fixing and installing a steering wheel 5 in the opening of the anti-collision wall body 4.
And step four, tightly fixing the strain sensor 9 on the prestressed steel strand 6 through locking block clamps at two ends of the strain sensor.
And fifthly, inserting the prestress steel strand 6 provided with the strain sensor into the reserved prestress steel strand pore channel and the steering wheel, and leading out a lead of the strain sensor 9.
And sixthly, after the prestressed steel strands are tensioned to the tensioning design value at two ends, one end of each prestressed steel strand is anchored to the top surface of the anti-collision wall body 4, and the other end of each prestressed steel strand is anchored to a second anchor block 8 on the bottom surface of the flange plate of the main girder of the bridge.
And step seven, measuring the tension strain of the prestressed steel strand and determining whether the strain sensor is normally installed. And sealing the anchors at two ends by adopting high-strength cement mortar.
And step eight, installing the guardrail.
And step nine, mounting the signal emitting device 2 and connecting the signal emitting device with a lead led out by the strain sensor 9.
Step ten, checking whether the communication between the signal transmitting device 2 and the signal receiving terminal of the traffic control center is smooth or not.
When a traffic accident that a vehicle collides with an anti-collision wall occurs, the strain of the prestressed steel strand can be monitored to have sudden change through the vibrating wire type steel cable strain sensor, and the information is sent to a receiving terminal of a traffic transportation pipe center by the information transmitting device.
The main advantages of the invention are: this main structure body adopts C style of calligraphy structure, has guaranteed holistic stability when providing the installation internal arrangement space. This structure is safe, reliable, has improved the wholeness of crashproof wall and girder through vertical prestressing steel strand wires, has strengthened bridge crashproof wall's barrier propterty and has changed the vehicle striking direction through prestressing steel strand wires and directive wheel synergism. The anti-collision component is simple to install and convenient to replace, and can greatly reduce the maintenance and replacement cost of the bridge anti-collision facilities after traffic accidents occur. The structure is intelligent and efficient, and can feed back traffic accidents to the traffic management center at the first time. The bridge anti-collision wall greatly improves the anti-collision performance of the structure, improves the road network operation management level, reduces the accident grade of traffic accidents, improves the accident rescue efficiency, relieves traffic jam and improves the traffic efficiency. And the construction is convenient, and the intelligent degree is high. The invention is mainly suitable for high pier bridges which span deep water and deep valleys and have large clearance under the bridge.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all equivalent modifications made by the contents of the present specification and the drawings, or applied to the related technical fields directly or indirectly, are included in the scope of the present invention.
Claims (10)
1. A highway bridge reinforced flexible anti-collision wall is characterized by comprising an anti-collision wall body (4), a steering wheel (5), a plurality of prestressed steel strands (6), a signal transmitting device (2) and a strain sensor (9);
one side of the anti-collision wall body (4) is longitudinally provided with a tensioned prestressed steel strand (6), the prestressed steel strand (6) is rotatably penetrated through a steering wheel (5), and the prestressed steel strand (6) is provided with a strain sensor (9);
the strain sensor (9) is used for acquiring a strain value of the prestressed steel strand (6) and transmitting the strain value to the signal transmitting device (2);
the signal transmitting device (2) transmits the strain value of the prestressed steel strand (6) to a receiving terminal of a traffic transportation pipe center, and when the strain value of the prestressed steel strand (6) is larger than a preset threshold value, the receiving terminal triggers an alarm mechanism.
2. The highway bridge reinforced flexible anti-collision wall according to claim 1, wherein one side of the anti-collision wall body (4) is provided with a groove along the trend of the bridge, the steering wheel (5) is positioned in the groove of the anti-collision wall body (4), and the edge of the steering wheel (5) extends out of the groove of the steering wheel (5).
3. The highway bridge reinforced flexible anti-collision wall according to claim 1, wherein the anti-collision wall body (4) is arranged on the bridge girder (7), and the prestressed steel strands (6) are vertically arranged to penetrate through the anti-collision wall body (4) and the bridge girder (7).
4. The highway bridge reinforced flexible anti-collision wall according to claim 3, wherein the upper ends of the prestressed steel strands (6) are fixed on the top of the anti-collision wall body (4) through the first anchor blocks (3), and the lower ends of the prestressed steel strands (6) are fixed on the bridge girder (7) through the second anchor blocks (8).
5. The highway bridge reinforced flexible anti-collision wall according to claim 1, wherein two steering wheels (5) are arranged on each prestressed steel strand (6) in a penetrating mode.
6. The highway bridge reinforced flexible anti-collision wall according to claim 1, wherein a railing (1) is installed on the top of the anti-collision wall body (4).
7. The highway bridge reinforced flexible anti-collision wall according to claim 1, wherein the strain sensor (9) is a vibrating wire type steel cable strain sensor, and the vibrating wire type steel cable strain sensor is fixed at the upper end of the prestress steel strand (5) through locking blocks at two ends.
8. The highway bridge reinforced flexible anti-collision wall according to claim 1, wherein the steering wheels (5) are made of rubber.
9. The highway bridge reinforced flexible impact wall according to claim 1, wherein the impact wall body (4) is of a concrete structure.
10. The construction method of the reinforced flexible anti-collision wall of the highway bridge according to claim 1, which comprises the following steps:
manufacturing an anti-collision wall body (4);
a steering wheel (5) is fixed in an opening of the anti-collision wall body (4);
fixing a strain sensor (9) on the prestressed steel strand (6);
a prestressed steel strand (6) provided with a strain sensor is inserted into the steering wheel (5);
after the prestressed steel strand (6) is tensioned to a tensioning design value at two ends, fixing the two ends of the prestressed steel strand (6);
and installing a signal transmitting device (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210033982.9A CN114351583A (en) | 2022-01-12 | 2022-01-12 | Reinforced flexible anti-collision wall for highway bridge and construction method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210033982.9A CN114351583A (en) | 2022-01-12 | 2022-01-12 | Reinforced flexible anti-collision wall for highway bridge and construction method thereof |
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| CN114351583A true CN114351583A (en) | 2022-04-15 |
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| CN202210033982.9A Pending CN114351583A (en) | 2022-01-12 | 2022-01-12 | Reinforced flexible anti-collision wall for highway bridge and construction method thereof |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2398329Y (en) * | 1999-12-14 | 2000-09-27 | 虞德顺 | Pretressed steel strand protection barrier |
| KR20120066903A (en) * | 2010-12-15 | 2012-06-25 | 재단법인 포항산업과학연구원 | Guard fence for bridge |
| CN106087812A (en) * | 2016-08-23 | 2016-11-09 | 中国电建集团贵阳勘测设计研究院有限公司 | A kind of method and device improving highway guard rail security performance |
| CN206396681U (en) * | 2016-12-29 | 2017-08-11 | 北京中路安交通科技有限公司 | Flexible protection median opening guardrail |
| CN207362756U (en) * | 2017-10-25 | 2018-05-15 | 南京工业大学 | A kind of Double-protection structure road safety barrier |
| CN209260555U (en) * | 2018-12-28 | 2019-08-16 | 青岛理工大学 | A kind of road and bridge anticollision barrier |
| CN210066591U (en) * | 2019-06-10 | 2020-02-14 | 葛刚 | Combined type traffic guardrail |
| CN213173340U (en) * | 2020-07-17 | 2021-05-11 | 江苏省扬州市公路管理处 | Bridge anticollision barrier |
-
2022
- 2022-01-12 CN CN202210033982.9A patent/CN114351583A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2398329Y (en) * | 1999-12-14 | 2000-09-27 | 虞德顺 | Pretressed steel strand protection barrier |
| KR20120066903A (en) * | 2010-12-15 | 2012-06-25 | 재단법인 포항산업과학연구원 | Guard fence for bridge |
| CN106087812A (en) * | 2016-08-23 | 2016-11-09 | 中国电建集团贵阳勘测设计研究院有限公司 | A kind of method and device improving highway guard rail security performance |
| CN206396681U (en) * | 2016-12-29 | 2017-08-11 | 北京中路安交通科技有限公司 | Flexible protection median opening guardrail |
| CN207362756U (en) * | 2017-10-25 | 2018-05-15 | 南京工业大学 | A kind of Double-protection structure road safety barrier |
| CN209260555U (en) * | 2018-12-28 | 2019-08-16 | 青岛理工大学 | A kind of road and bridge anticollision barrier |
| CN210066591U (en) * | 2019-06-10 | 2020-02-14 | 葛刚 | Combined type traffic guardrail |
| CN213173340U (en) * | 2020-07-17 | 2021-05-11 | 江苏省扬州市公路管理处 | Bridge anticollision barrier |
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