CN110004824A - A kind of new bridge crashworthy guardrail - Google Patents
A kind of new bridge crashworthy guardrail Download PDFInfo
- Publication number
- CN110004824A CN110004824A CN201910316753.6A CN201910316753A CN110004824A CN 110004824 A CN110004824 A CN 110004824A CN 201910316753 A CN201910316753 A CN 201910316753A CN 110004824 A CN110004824 A CN 110004824A
- Authority
- CN
- China
- Prior art keywords
- dashpot
- column
- buffer unit
- new bridge
- built
- 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
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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
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Refuge Islands, Traffic Blockers, Or Guard Fence (AREA)
Abstract
The present invention provides a kind of new bridge crashworthy guardrail, including pillar parts, buffer unit and built-in fitting component, built-in fitting component is embedded at the bridge edge of a wing, pillar parts and buffer unit are equipped with multiple, multiple pillar parts and multiple buffer units are along built-in fitting arrangement of parts setting in a row on built-in fitting component, and multiple pillar parts and multiple buffer units are arranged alternately；When on the dashpot of Vehicular impact to buffer unit, dashpot plays first layer buffer function, and elastomeric element can play second layer buffer function, enhance buffer function, also it greatly reduces the impulse force of vehicle column and reduces the risk of vehicle and driver and passenger, improve the intensity of Bridge guardrail.
Description
Technical field
The invention mainly relates to bridge technology fields, and in particular to a kind of new bridge crashworthy guardrail.
Background technique
China's highway develops rapidly in recent years, national highway mileage open to traffic in 2017 up to 13.6 ten thousand kms,
4.1 ten thousand kms are increased newly compared with 2012 end of the years, occupy the first in the world.The volume of traffic is increasing, and traffic accident incidence is higher and higher,
Traffic safety form is still severe.Therefore actively guidance, full-time guarantee, isolation are adhered to when carrying out traffic safety facilities design
Closing, passive protection principle reduce contingency occurrence probability and severity of injuries.
Under normal circumstances, bridge trackside degree of danger is obviously higher than roadbed section, and vehicle, which is run off, often will cause vehicle outside bridge
Ruin the major traffic accidents that people dies.Bridge guardrail anti-collision level can be divided into eight grades according to national regulation, wherein HA grades most
It is good, and the guardrail form in current bridge on highway is divided into stiff safety fence, semi-rigidity rail and flexible shield by crashworthiness
Column, wherein semi-rigidity rail is most widely used, but semi-rigid Bridge guardrail on the market will go out when being hit at present
The case where now disconnecting, integral strength are very low, it is difficult to meet the actual use demand of people.
Summary of the invention
The technical problem to be solved by the present invention is in view of the deficiencies of the prior art, provide a kind of new bridge crashworthy guardrail.
The technical scheme to solve the above technical problems is that a kind of new bridge crashworthy guardrail, including it is pillar parts, slow
Component and built-in fitting component are rushed, the built-in fitting component is embedded at the bridge edge of a wing, the pillar parts and the buffer unit
It is equipped with multiple, multiple pillar parts and the setting in a row along the built-in fitting arrangement of parts of multiple buffer units
On the built-in fitting component, and the multiple pillar parts and the multiple buffer unit are arranged alternately.
The beneficial effects of the present invention are: dashpot plays buffering and makees when on the dashpot of Vehicular impact to buffer unit
With greatly reducing the impulse force of vehicle column and reduce the risk of vehicle and driver and passenger, improve bridge
The intensity of guardrail.
Based on the above technical solution, the present invention can also be improved as follows.
Further, the built-in fitting component includes U-type groove body, and the pillar parts include two end support posts and more
A midfoot support column, the end support post be half frame-type structure, the midfoot support column be I-shaped structure, two
The end support post is open opposite setting in the U-type groove body head and the tail both ends, the multiple midfoot support column respectively
And the multiple buffer unit is disposed alternately between two end support posts, and the midfoot support column is I-shaped
The adjacent buffer unit in two sides, the open end card of the half frame-type structure of end support post are blocked respectively in the opening both ends of structure
Firmly adjacent buffer unit.
Beneficial effect using above-mentioned further scheme is: end support post and midfoot support column can be more firm
Fixed buffer unit, is linked together, is not readily separated.
Further, the buffer unit includes dashpot and elastomeric element, and the dashpot is hollow cuboid structure,
The elastomeric element is arranged in the dashpot.
Beneficial effect using above-mentioned further scheme is: dashpot plays first layer buffer function, and spring members energy
Second layer buffer function is enough played, the impulse force of vehicle column is reduced, greatly improves the intensity of Bridge guardrail.
Further, the buffer unit further includes isolation steel plate, and the isolation steel plate is horizontally installed in the dashpot
And close to the dashpot, the dashpot is divided into top area and lower region, the elastomeric element is arranged described
In top area.
Beneficial effect using above-mentioned further scheme is: when later period concrete one-piece casting, concrete is from dashpot
Through-hole enters in dashpot, and isolation steel plate prevents concrete from entering in the top area of dashpot, completely cuts off steel plate space below
By Concrete Filled, dashpot can be reinforced.
Further, the elastomeric element is multiple spring members, and each spring members are across in the dashpot
The two sides of top area, multiple spring members are alternatively arranged to form multiple row groups of springs along the dashpot length direction, often
Column groups of springs includes multiple spring members of spaced set from top to bottom.
Beneficial effect using above-mentioned further scheme is: make Bridge guardrail enhancing endurance and uniform force, it is not variable
Shape.
Further, it is logical that multiple dashpots for later period concrete one-piece casting are equipped at the lower region of the dashpot
Hole, the dashpot through-hole are connected to inside the inside of the U-type groove body and the lower region of the dashpot, multiple bufferings
What slot through-hole rounded is arranged at the lower region of the dashpot.
Further, the built-in fitting component further includes bolt and junction steel plate；The two sides of U-type groove body top edge are uniform
The body formed flange having for blocking the column or the dashpot, two flanges are opposite into the U-type groove body
Portion extends；There are two the junction steel plate is set, extended to from tail end from the U-type groove body head end, and be laid in two respectively
On the upper surface of the flange, the junction steel plate and the flange are equipped with mutual corresponding multiple screw holes pair, multiple described
Screw hole is to spaced set, and the bolt also is provided with multiple and quantity and the screw hole to equal, and multiple bolts are worn respectively
Enter multiple screw holes internally the junction steel plate is fixed on the flange.
Beneficial effect using above-mentioned further scheme is: bolt and junction steel plate strengthen the strong of Bridge guardrail structure
Degree, makes to generate extruding force between connected piece contact surface, thus has biggish frictional force perpendicular to bolt direction, by the friction
Power shears to transmit connection, can apply the pretension of bolt, which realized by tightening nut.
It further, further include bolumn cap, the top of the column is removably arranged in the bolumn cap.
Beneficial effect using above-mentioned further scheme is: bolumn cap can column reinforced.
Further, the bolumn cap and the column are removably linked together by screw thread.
Beneficial effect using above-mentioned further scheme is: bolumn cap and column are conveniently torn open by screw thread detachable connection
It unloads.
Further, the lower end of the column is equipped with multiple column through-holes for later period concrete one-piece casting, described vertical
Column through-hole is connected to the inside of the U-type groove body and the inside of the column, and the setting that multiple column through-holes round exists
The lower end of the column.
Beneficial effect using above-mentioned further scheme is: when later period concrete one-piece casting, concrete is logical from column
Hole enters in column hollow cavity, being capable of column reinforcing.
Detailed description of the invention
Fig. 1 is the sectional view of buffer unit provided in an embodiment of the present invention；
Fig. 2 is the sectional view of column provided in an embodiment of the present invention；
Fig. 3 is the perspective view of Bridge guardrail provided in an embodiment of the present invention；
Fig. 4 is the top view of end support post provided in an embodiment of the present invention and midfoot support column；
Fig. 5 is the sectional view of U-type groove body provided in an embodiment of the present invention；
Fig. 6 is the sectional view of flange provided in an embodiment of the present invention.
In attached drawing, the names of the parts represented by the respective symbols are as follows:
1, column, 2, buffer unit, 3, bolumn cap, 4, U-type groove body, 5, bolt, 6, junction steel plate, 101, end support it is vertical
Column, 102, midfoot support column, 103, column through-hole, 201, dashpot, 202, isolation steel plate, 203, spring members, 204, slow
Jet-bedding through-hole, 401, flange.
Specific embodiment
The principle and features of the present invention will be described below with reference to the accompanying drawings, and the given examples are served only to explain the present invention, and
It is non-to be used to limit the scope of the invention.
As shown in figure 3, a kind of new bridge crashworthy guardrail, including pillar parts 1, buffer unit 2 and built-in fitting component, it is described pre-
Embedded part component is embedded at the bridge edge of a wing, and the pillar parts 1 and the buffer unit 2 are equipped with multiple, multiple columns
Component 1 and multiple buffer units 2 along built-in fitting arrangement of parts setting in a row on the built-in fitting component, and
The multiple pillar parts 1 and the multiple buffer unit 2 are arranged alternately.
In above-described embodiment, when on the dashpot of Vehicular impact to buffer unit, dashpot plays buffer function, greatly
It reduces the impulse force of vehicle column and reduces the risk of vehicle and driver and passenger, improve the strong of Bridge guardrail
Degree.
Optionally, as an embodiment of the present invention, as shown in Figure 4,5, the built-in fitting component includes U-type groove body 4,
The pillar parts 1 include two end support posts 101 and multiple midfoot support columns 102, the end support post 101
For half frame-type structure, the midfoot support column 102 is I-shaped structure, and two end support posts 101 are open respectively
Opposite setting is handed in the 4 head and the tail both ends of U-type groove body, the multiple midfoot support column 102 and the multiple buffer unit 2
For setting between two end support posts 101, and the opening both ends of 102 I-shaped structure of midfoot support column
The adjacent buffer unit 2 in two sides is blocked respectively, and adjacent delay is blocked in the open end of the 101 half frame-type structure of end support post
Rush component 2.
In above-described embodiment, the fixation buffer unit that end support post and midfoot support column can be more firm is linked as
One, is not readily separated.
Optionally, as an embodiment of the present invention, as shown in Figure 1, the buffer unit 2 includes 201 He of dashpot
Elastomeric element, the dashpot 201 are hollow cuboid structure, and the elastomeric element is arranged in the dashpot 201.
In above-described embodiment, dashpot plays first layer buffer function, and spring members can play second layer buffering and make
With reducing the impulse force of vehicle column, greatly improve the intensity of Bridge guardrail.
Optionally, as an embodiment of the present invention, as shown in Fig. 1,2,4,6, the built-in fitting component further includes spiral shell
Bolt 5 and junction steel plate 6；The two sides of 4 top edge of U-type groove body are integrally formed useful in blocking the column 1 or described slow
The flange 401 of jet-bedding 201, two flanges 401 are opposite to 4 internal stretch of U-type groove body；The junction steel plate 6 is set
There are two, it is extended to from tail end from 4 head end of U-type groove body, and be laid in the upper surface of two flanges 401 respectively
On, the junction steel plate 6 and the flange 401 are equipped with mutual corresponding multiple screw holes pair, and multiple screw holes are to equidistant
Setting, the bolt 5 also are provided with multiple and quantity and the screw hole to equal, multiple bolts 5 respectively penetrate it is multiple described in
The junction steel plate 6 is internally fixed on the flange 401 by screw hole.
Specifically, two junction steel plates 6 close to the side of column 1 and dashpot 201 by welding with column 1 and
Dashpot 201 is linked together.
Specifically, the size of column is 300*3000*1400 millimeters, and column is made of steel plate is reinforced.
Specifically, dashpot forms hollow cuboid structure by steel plate, steel plate with a thickness of 10mm.
Specifically, the performance rate of bolt is 8.8 grades, and material is carbon constructional quality steel, and intensity 560MPa, surrender is by force
Degree is 335MPa, the high-strength bolt that elongation is 18%.
In above-described embodiment, bolt and junction steel plate strengthen the intensity of Bridge guardrail structure, make connected piece contact surface
Between generate extruding force, thus have biggish frictional force perpendicular to bolt direction, connection shearing, energy transmitted by the frictional force
Enough apply the pretension of bolt, which realized by tightening nut.
Optionally, as an embodiment of the present invention, as shown in Figure 1, the buffer unit 2 further includes isolation steel plate
202, the isolation steel plate 202 is horizontally installed in the dashpot 201, by the dashpot 201 be divided into top area and
Lower region, the elastomeric element are arranged in the top area.
In above-described embodiment, when later period concrete one-piece casting, concrete enters in dashpot from dashpot through-hole, every
Exhausted steel plate prevents concrete from entering in the top area of dashpot, and isolation steel plate space below, can be right by Concrete Filled
Dashpot is reinforced.
Optionally, as an embodiment of the present invention, the elastomeric element is multiple spring members 203, each described
Spring members 203 are across the two sides in 201 top area of dashpot, and multiple spring members 203 are along the buffering
201 length direction of slot is alternatively arranged to form multiple row groups of springs, and each column groups of springs includes multiple bullets of spaced set from top to bottom
Spring component 203.
Specifically, the material of spring members uses II class 60Si2Mn or 60Si2Mn, torsional stress allowable are 785GPa,
Permissible bending stress is 981GPa, shear modulus 78.5GPa, elasticity modulus 197GPa, elastic limit height, temper resistance
Well, mechanical property is good.Spring members are arranged among dashpot by welding.The width of entire elastic buffer structure
It is 200 millimeters.
In above-described embodiment, makes Bridge guardrail enhancing endurance and uniform force, be unlikely to deform.
Optionally, as an embodiment of the present invention, after being equipped with multiple be used at the lower region of the dashpot 201
The dashpot through-hole 204 of phase concrete one-piece casting, the dashpot through-hole 204 be connected to the inside of the U-type groove body 4 with it is described
Inside the lower region of dashpot 201, what multiple dashpot through-holes 204 rounded is arranged in the dashpot 201
At lower region.
Specifically, the aperture that dashpot through-hole 204 is 100*100 millimeters.
It optionally, as an embodiment of the present invention, further include bolumn cap 3, the bolumn cap 3 is removably arranged described
The top of column 1.
Specifically, bolumn cap is having a size of 340*340*100 millimeters.
In above-described embodiment, bolumn cap can column reinforced.
Optionally, as an embodiment of the present invention, the bolumn cap 3 and the column 1 are removably connected by screw thread
It is integrated.
In above-described embodiment, bolumn cap and column are easy to disassemble by screw thread detachable connection.
Optionally, as an embodiment of the present invention, the lower end of the column 1 is equipped with multiple whole for later period concrete
The column through-hole 103 that body pours, the column through-hole 103 is connected to the inside of the U-type groove body 4 and the inside of the column 1, more
The lower end that the column 1 is set that a column through-hole 103 rounds.
Specifically, the aperture that column through-hole 101 is 100*100 millimeters.
Specifically, above-mentioned all concrete strengths are that C30 and welding are all made of arc welding.
In above-described embodiment, when later period concrete one-piece casting, concrete enters column hollow cavity from column through-hole
It is interior, it being capable of column reinforcing.
It should be noted that, in this document, relational terms such as first and second and the like are used merely to a reality
Body or operation are distinguished with another entity or operation, are deposited without necessarily requiring or implying between these entities or operation
In any actual relationship or order or sequence.Moreover, the terms "include", "comprise" or its any other variant are intended to
Non-exclusive inclusion, so that the process, method, article or equipment including a series of elements is not only wanted including those
Element, but also including other elements that are not explicitly listed, or further include for this process, method, article or equipment
Intrinsic element.
The foregoing is merely presently preferred embodiments of the present invention, is not intended to limit the invention, it is all in spirit of the invention and
Within principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of new bridge crashworthy guardrail, which is characterized in that including pillar parts (1), buffer unit (2) and built-in fitting component, institute
Built-in fitting component is stated to be embedded at the bridge edge of a wing, the pillar parts (1) and the buffer unit (2) be equipped with it is multiple, it is multiple
The pillar parts (1) and multiple buffer units (2) are along built-in fitting arrangement of parts setting in a row described pre-
On embedded part component, and the multiple pillar parts (1) and the multiple buffer unit (2) are arranged alternately.
2. new bridge crashworthy guardrail according to claim 1, which is characterized in that the built-in fitting component includes U-type groove body
(4), the pillar parts (1) include two end support posts (101) and multiple midfoot support columns (102), the end
Support post (101) is half frame-type structure, and the midfoot support column (102) is I-shaped structure, two end supports
Column (101) is open opposite setting in U-type groove body (4) the head and the tail both ends, the multiple midfoot support column (102) respectively
And the multiple buffer unit (2) is disposed alternately between two end support posts (101), and the midfoot support is vertical
The adjacent buffer unit in two sides (2), the end support post are blocked respectively in the opening both ends of column (102) I-shaped structure
Block adjacent buffer unit (2) in the open end of (101) half frame-type structures.
3. new bridge crashworthy guardrail according to claim 2, which is characterized in that the built-in fitting component further includes bolt (5)
With junction steel plate (6)；The two sides of U-type groove body (4) top edge are integrally formed useful in blocking the column (1) or described
The flange (401) of dashpot (201), two flanges (401) are opposite to U-type groove body (4) internal stretch；The company
It connects there are two steel plate (6) sets, is extended to from tail end from U-type groove body (4) head end, and be laid in two flanges respectively
(401) on upper surface, the junction steel plate (6) and the flange (401) are equipped with mutual corresponding multiple screw holes pair, multiple
For the screw hole to spaced set, the bolt (5) also is provided with multiple and quantity with the screw hole to equal, multiple bolts
(5) multiple screw holes are respectively penetrated internally the junction steel plate (6) is fixed on the flange (401).
4. new bridge crashworthy guardrail according to claim 1, which is characterized in that the buffer unit (2) includes dashpot
(201) and elastomeric element, the dashpot (201) are hollow cuboid structure, and the elastomeric element is arranged in the buffering
In slot (201).
5. new bridge crashworthy guardrail according to claim 4, which is characterized in that the buffer unit (2) further includes isolation steel
Plate (202), the isolation steel plate (202) are horizontally installed in the dashpot (201), the dashpot (201) are divided into
Top area and lower region, the elastomeric element are arranged in the top area.
6. new bridge crashworthy guardrail according to claim 5, which is characterized in that the elastomeric element is multiple spring members
(203), each spring members (203) are across the two sides in the dashpot (201) top area, multiple springs
Component (203) is alternatively arranged to form multiple row groups of springs along the dashpot (201) length direction, each column groups of springs include by up to
Multiple spring members (203) of lower spaced set.
7. new bridge crashworthy guardrail according to claim 5, which is characterized in that at the lower region of the dashpot (201)
Equipped with multiple dashpot through-holes (204) for later period concrete one-piece casting, dashpot through-hole (204) connection is described pre-
Inside the lower region of the inside of embedded part component and the dashpot (201), multiple dashpot through-holes (204) are rounded
Setting at the lower region of the dashpot (201).
8. new bridge crashworthy guardrail according to claim 1, which is characterized in that further include bolumn cap (3), the bolumn cap (3) can
Top of the setting of disassembly in the column (1).
9. new bridge crashworthy guardrail according to claim 8, which is characterized in that the bolumn cap (3) and the column (1) pass through
Screw thread is removably linked together.
10. new bridge crashworthy guardrail according to any one of claims 1 to 9, which is characterized in that the lower end of the column (1)
Equipped with multiple column through-holes (103) for later period concrete one-piece casting, the column through-hole (103) is connected to the U-type groove
The inside of body (4) and the inside of the column (1), the setting that multiple column through-holes (103) are rounded is in the column
(1) lower end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910316753.6A CN110004824A (en) | 2019-04-19 | 2019-04-19 | A kind of new bridge crashworthy guardrail |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910316753.6A CN110004824A (en) | 2019-04-19 | 2019-04-19 | A kind of new bridge crashworthy guardrail |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110004824A true CN110004824A (en) | 2019-07-12 |
Family
ID=67173122
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910316753.6A Pending CN110004824A (en) | 2019-04-19 | 2019-04-19 | A kind of new bridge crashworthy guardrail |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110004824A (en) |
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