CN213417564U - Combined guardrail with improved safety protection capability of existing bridge - Google Patents
Combined guardrail with improved safety protection capability of existing bridge Download PDFInfo
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- CN213417564U CN213417564U CN202021939226.5U CN202021939226U CN213417564U CN 213417564 U CN213417564 U CN 213417564U CN 202021939226 U CN202021939226 U CN 202021939226U CN 213417564 U CN213417564 U CN 213417564U
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Abstract
The utility model discloses a combination formula guardrail that existing bridge safety protection ability promoted, include the former steel handrail that has on the former reinforced concrete guardrail and demolish the back original reinforced concrete guardrail upper portion installation newly-increased steel guardrail, wherein, the inside cavity of newly-increased steel guardrail, the former reinforced concrete guardrail of lower part both sides laminating is connected with former reinforced concrete guardrail through the bar-planting crab-bolt, arranges the baffle at the inside every interval 15cm of newly-increased steel guardrail simultaneously for promote existing bridge anticollision guardrail protective capacities. The utility model discloses reform transform to current highway guardrail, promote through carrying on simple and convenient, economy, practical transformation, promote bridge safety protection ability.
Description
Technical Field
The utility model relates to a public road bridge roof beam construction technical field especially relates to a combination formula guardrail that existing bridge safety protection ability promoted.
Background
A highway bridge is an important component of a highway. By the end of 2017, the total number of the bridges on the highway in service in China reaches more than 83 thousands, and due to different construction times and different construction levels and standards, the bridge deck system safety protection facilities are diversified in arrangement types and forms and different in protection capability.
The guardrails can be classified into the following three categories: first, a rigid guard rail, a guard rail that does not substantially deform after a vehicle collision. The concrete guardrail is a main representative form, and the vehicle can climb and turn to absorb collision energy during collision; the semi-rigid guardrail has certain deformation after vehicle collision and certain strength and rigidity. The waveform beam guardrail is a main representative form, and absorbs collision energy by utilizing deformation of a soil foundation, an upright post and a corrugated steel plate when a vehicle collides; flexible guardrail, toughness guardrail structure that has great buffer capacity. The cable guard is a main representative form, and the vehicle crash relies on the tensile stress of the cable to absorb crash energy.
The highest height of the domestic high-protection-level concrete bridge guardrail is 1.3m, and the safety protection requirements of most bridge sections can be met. However, with the development of the transportation industry and the increase of traffic pressure, in some special dangerous road sections, for example, road sections which are easy to cause more serious collision consequences due to unfavorable field conditions such as bridge line shape, bridge height, traffic volume, vehicle composition, running speed and the like, or road sections which are easy to cause more serious collision consequences when bridges cross national highway networks, high-speed railways, drinking water sources and the like, the existing concrete bridge guard rail with high protection level cannot completely meet the safety protection requirement. With the continuous development of economic society, the passenger capacity and the load capacity of vehicles are increased, the speed is increased, and social public puts higher requirements on the traffic safety protection capability of highway bridges.
Based on the above background, in order to further improve the safety protection guarantee capability of the highway bridge, the transportation department determines to develop special actions for improving the safety protection capability of the highway bridge in the whole country from the viewpoint of system safety based on the industry responsibility, and a technical guideline for improving the safety protection capability of the highway bridge is published in 2019 in 4 months. The research on how to carry out more convenient, more economic and more practical transformation and promotion on the existing bridge anti-collision guardrail on the premise of meeting the relevant standard requirements has practical guiding significance on the implementation of actions special for promoting the bridge safety protection capability.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a combination formula guardrail that existing bridge safety protection ability promoted can effectively promote existing bridge anticollision barrier protective capacities.
In order to further realize the above purpose, the utility model adopts the following technical scheme: the utility model provides a combination formula guardrail that existing bridge safety protection ability promoted, includes and demolishs the back with former steel handrail that has on the former reinforced concrete guardrail the new-increased steel guardrail of former reinforced concrete guardrail upper portion installation, wherein, the inside cavity of new-increased steel guardrail, the former reinforced concrete guardrail of lower part both sides laminating is connected with former reinforced concrete guardrail through the bar-planting crab-bolt, arranges the baffle at every interval 15cm inside the new-increased steel guardrail simultaneously for promote existing bridge anticollision guardrail protective capacities.
As an improvement of the technical scheme, the anti-climbing ridge facing one side of the bridge is arranged on the upper portion of the newly-added steel guardrail.
Compared with the prior art, the utility model discloses following beneficial effect has: the utility model discloses reform transform to current highway guardrail, demolish former anticollision guardrail steel handrail, utilize former anticollision guardrail concrete part, add steel construction anticollision barrier on anticollision guardrail concrete foundation, form steel-concrete integrated configuration's anticollision barrier. Through carrying out simple and convenient, economic, practical transformation promotion, promote bridge safety protection ability.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:
fig. 1 is a structural view of the combined guardrail of the present invention.
In the figure: 1-anti-creeping ridge, 2-clapboard, 3-newly added steel guardrail, 4-embedded bar anchor bolt, 5-original reinforced concrete guardrail, 6-asphalt concrete pavement and 7-cement concrete pavement.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clear, the following will describe the embodiments of the present invention in further detail with reference to fig. 1.
The utility model provides a combination formula guardrail that existing bridge safety protection ability promoted, as shown in figure 1, including cement concrete pavement 7 and the asphalt concrete pavement 6 of laying in this cement concrete pavement 7 upper ends, still including being located cement concrete pavement 7 and the former reinforced concrete guardrail 5 of 6 one sides of asphalt concrete pavement, demolish the back with former steel handrail that has on former reinforced concrete guardrail 5 the newly-increased steel guardrail 3 of former reinforced concrete guardrail 5 upper portion installation, wherein, newly-increased steel guardrail 3 inside cavity, the former reinforced concrete guardrail 5 of lower part both sides laminating is connected with former reinforced concrete guardrail 5 through bar-planting crab-bolt 4, arranges baffle 2 at 3 inside every interval 15cm of newly-increased steel guardrail simultaneously for promote existing bridge anticollision guardrail protective capability.
In this embodiment, newly-increased 3 upper portions of steel guardrail are provided with and hinder the bank 1 of climbing towards bridge one side.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood that the invention is not limited thereto, and that various modifications and changes can be made by those skilled in the art without departing from the principles of the invention.
Claims (2)
1. The utility model provides a combination formula guardrail that existing bridge safety protection ability promoted, its characterized in that includes and demolishs the back with former steel handrail that has on former reinforced concrete guardrail (5) upper portion installation newly-increased steel guardrail (3), wherein, newly-increased steel guardrail (3) inside cavity, former reinforced concrete guardrail (5) of lower part both sides laminating are connected with former reinforced concrete guardrail (5) through bar planting crab-bolt (4), arrange baffle (2) at every interval 15cm inside newly-increased steel guardrail (3) simultaneously for promote existing bridge anticollision guardrail protective capacities.
2. The combined guardrail with the improved safety protection capability of the existing bridge as claimed in claim 1, wherein the newly added steel guardrail (3) is provided with a climbing stopping sill (1) facing one side of the bridge at the upper part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021939226.5U CN213417564U (en) | 2020-09-08 | 2020-09-08 | Combined guardrail with improved safety protection capability of existing bridge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021939226.5U CN213417564U (en) | 2020-09-08 | 2020-09-08 | Combined guardrail with improved safety protection capability of existing bridge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213417564U true CN213417564U (en) | 2021-06-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021939226.5U Active CN213417564U (en) | 2020-09-08 | 2020-09-08 | Combined guardrail with improved safety protection capability of existing bridge |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213417564U (en) |
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2020
- 2020-09-08 CN CN202021939226.5U patent/CN213417564U/en active Active
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