CN111424544A - Flexible coupling assembling on bridge steel anticollision barrier - Google Patents
Flexible coupling assembling on bridge steel anticollision barrier Download PDFInfo
- Publication number
- CN111424544A CN111424544A CN202010373648.9A CN202010373648A CN111424544A CN 111424544 A CN111424544 A CN 111424544A CN 202010373648 A CN202010373648 A CN 202010373648A CN 111424544 A CN111424544 A CN 111424544A
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- Prior art keywords
- cross beam
- assembly
- vertical
- bridge
- roller
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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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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
- E01F15/00—Safety arrangements for slowing, redirecting or stopping errant vehicles, e.g. guard posts or bollards; Arrangements for reducing damage to roadside structures due to vehicular impact
- E01F15/14—Safety arrangements for slowing, redirecting or stopping errant vehicles, e.g. guard posts or bollards; Arrangements for reducing damage to roadside structures due to vehicular impact specially adapted for local protection, e.g. for bridge piers, for traffic islands
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
- E01F15/00—Safety arrangements for slowing, redirecting or stopping errant vehicles, e.g. guard posts or bollards; Arrangements for reducing damage to roadside structures due to vehicular impact
- E01F15/14—Safety arrangements for slowing, redirecting or stopping errant vehicles, e.g. guard posts or bollards; Arrangements for reducing damage to roadside structures due to vehicular impact specially adapted for local protection, e.g. for bridge piers, for traffic islands
- E01F15/143—Protecting devices located at the ends of barriers
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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 invention discloses a telescopic connecting assembly on a bridge steel anti-collision guardrail, which comprises cross beams at two sides of an expansion joint, a connecting sleeve, a rolling assembly and an anchoring bolt, wherein each cross beam comprises a fixed cross beam and a movable cross beam; the rolling assembly is fixedly arranged at the end part of the connecting sleeve and can roll in the movable cross beam. The telescopic connecting assembly changes conventional contact sliding into rolling movement, greatly reduces assembly friction in the using process, improves the durability of the assembly, structurally avoids the adoption of long round holes, has no open holes, and avoids the risk of failure of the connecting assembly caused by foreign matter invasion; the three-way displacement type anti-collision device has the advantages of good three-way displacement function, strong anti-collision capability, good durability, neat and attractive appearance, and can be widely applied to large-span and long-span bridge structures.
Description
Technical Field
The invention relates to the field of bridge guardrails, in particular to a telescopic connecting assembly on a bridge steel anti-collision guardrail.
Background
With the green bridge concept being in depth to the mind, people have higher and higher requirements on the bridge structure landscape. The common concrete guardrail has poor landscape effect, and the steel anti-collision guardrail greatly improves the modeling and permeability, so the steel anti-collision guardrail is widely applied to steel structure bridges, large-span special structure bridges, bridges with special requirements on landscape, bridges in areas with serious snow accumulation and the like. The bridge usually needs to be provided with a telescopic device in the longitudinal direction to adapt to the deformation of the bridge structure under the action of temperature, automobile and other live loads; in order to ensure the driving safety, the steel crash barrier is generally of a longitudinal continuous structure, so that a longitudinal expansion device is also required to be arranged like a bridge structure. On the other hand, with the rapid development of bridge construction technology, the application of long and long span and ultra-long bridge structures is becoming more and more extensive, and the requirement for the expansion amount of the beam ends of the bridge structures is obviously increased.
The conventional steel anti-collision guardrail telescopic device is characterized in that a long round hole is formed in a steel cross beam and connected with a bolt through a connecting sleeve, and when the bridge structure longitudinally stretches and deforms, the bolt moves in the long round hole, so that the steel anti-collision guardrail is stretched and retracted. The steel crash barrier expansion device has good adaptability to the situation of small expansion amount, but for a long-span long-connected bridge structure, the expansion amount of the bridge structure under the load action can reach 20-100cm, the length of the long round hole of the conventional expansion device is too long, the bolt stroke is too large, the bolt and the steel structure slide in a contact manner in the expansion process, the friction loss is serious, the structural durability is poor after the anticorrosive coating is worn, in addition, the sliding friction between the bolt and the steel structure generates noise, and the environmental protection concept is violated; the long round hole with large length is easy to be invaded by foreign matters to cause the locking failure of the bolt; the long round holes with large expansion amount obviously weaken the structural strength of the cross beam; the conventional steel anti-collision guardrail telescopic device is mainly suitable for longitudinal deformation of a bridge, the long-span bridge is telescopic and usually has three-dimensional (longitudinal, transverse and rotary) displacement characteristics, and the conventional steel anti-collision guardrail telescopic device is difficult to meet the requirement of large telescopic quantity of a bridge structure. The development of the telescopic connecting component with large telescopic capacity for the bridge steel anti-collision guardrail is particularly important.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a telescopic connecting assembly on a bridge steel anti-collision guardrail, which has the advantages of high strength and low noise and is particularly suitable for bridge steel guardrails with large telescopic quantity requirements.
In order to solve the technical problems, the technical scheme provided by the invention is as follows: a telescopic connection assembly on a bridge steel anti-collision guardrail comprises a cross beam, a connection sleeve, a rolling assembly and an anchor bolt, wherein the cross beam is arranged on two sides of an expansion joint and comprises a fixed cross beam and a movable cross beam; the rolling assembly is fixedly arranged at the end part of the connecting sleeve and can roll in the movable cross beam.
As a further improvement of the above technical solution: the fixed cross beam and the movable cross beam have the same external dimension and are positioned on the same axis, so that the fixed cross beam and the movable cross beam have consistent appearance and are uniformly and reasonably stressed; the ends of the fixed cross beam and the movable cross beam are aligned with the beam end line of the bridge, and the guardrail does not influence the expansion of the bridge structure, or the expansion of the bridge structure does not influence the safety of the guardrail.
Furthermore, the rolling assembly comprises one or more coaxial vertical rollers, one or more coaxial horizontal rollers and cylindrical bearings matched with the vertical rollers and the horizontal rollers for use, and the cylindrical bearings penetrate through the vertical rollers, the horizontal rollers and the connecting sleeves respectively and are welded and fixed with the connecting sleeves, so that the rolling assembly is adaptable to relative three-way displacement of the guardrails on two sides.
Further, vertical gyro wheel and horizontal gyro wheel all include the nylon layer of steel gyro wheel and outsourcing, the internal diameter of steel gyro wheel is the same with cylindrical bearing's diameter, and the nylon layer is fallen and is fallen the noise, and the diameter is the same to be ensured smooth installation.
Furthermore, the diameter of the vertical roller is smaller than the vertical length of the inner ring of the movable cross beam by a certain dimension a, and the diameter of the horizontal roller is smaller than the horizontal length of the inner ring of the movable cross beam by a certain dimension b; a. the value of b is increased along with the increase of the span and the coupling length of the bridge structure, but is not more than the difference value of the length of the inner ring of the movable cross beam and the length of the outer ring of the connecting sleeve in the respective direction, wherein the coupling length is the coupling length, namely the length of the bridge between two expansion joints (no expansion joint is arranged in the middle of the coupling), and a and b can adapt to the relative vertical and horizontal displacement of the guardrails on two sides.
Furthermore, the longitudinal distance between the vertical roller and the horizontal roller is d, wherein d is more than or equal to 10cm and less than or equal to 50cm, the installation is not facilitated due to too short rollers, and the casing material is wasted due to too long rollers.
Furthermore, the horizontal axis of the cylindrical bearing of the vertical roller is located below the horizontal axis of the connecting sleeve, and the lower end of the vertical roller is in contact with the movable cross beam, so that the vertical roller is in contact with the movable cross beam to avoid collision under the condition of normal working.
Furthermore, a rectangular roller hole along the height direction of the rolling assembly and a circular bearing hole vertical to the height direction of the rolling assembly are formed in the moving side of the connecting sleeve, so that the installation of a bearing and a roller is facilitated.
Furthermore, a clearance between the rectangular roller hole and the left end part and a clearance between the rectangular roller hole and the right end part of the rolling assembly are c1, a clearance between the rectangular roller hole and the upper side and the lower side of the rolling assembly are c2, wherein the adjustment range of c1 is more than or equal to 0.1cm and less than or equal to c1 and less than or equal to 5cm, the adjustment range of c2 is more than or equal to 0.1cm and less than or equal to c2 and less than or equal to 5cm, and the roller is prevented from being.
Furthermore, the side in rectangle gyro wheel hole is the edging structure, prevents that gyro wheel and steel casing pipe friction from damaging the gyro wheel.
The working principle of the invention is as follows:
when the bridge structures are deformed under the load action of temperature and the like, the steel anti-collision guardrail is deformed along with the bridge structures, the deformation of the beam ends of the long-span and long-span bridge structures is usually combined by the deformation in the longitudinal direction, the transverse direction and the rotation direction, and the telescopic connecting assembly of the steel anti-collision guardrail is required to have three-dimensional deformation adaptability. One end of a connecting sleeve is fixed on the side of the fixed beam, the other end of the connecting sleeve extends into the movable beam, the connecting sleeve is in contact with the movable beam through vertical and horizontal rollers, and a certain gap is reserved between the connecting sleeve and the inner cavity of the movable beam. The connecting sleeve can freely stretch and retract in the inner cavity of the movable cross beam longitudinally through the roller, so that longitudinal deformation is realized; a horizontal moving space is provided by a gap b between the horizontal roller and the inner cavity of the movable beam in the transverse direction, and meanwhile, a gap existing between the connecting sleeve and the movable beam in the horizontal direction can provide the rotation angle freedom degree taking the horizontal roller as the axis; under the load action of the bridge, the beam end has relative vertical corner displacement, a gap a between the vertical roller and the inner cavity of the movable cross beam provides a vertical moving space, and a gap between the connecting sleeve and the movable cross beam vertically provides a corner freedom degree taking the vertical roller as an axis; in conclusion, the assembly can realize longitudinal, horizontal and vertical three-dimensional deflection of the steel crash barrier.
Compared with the prior art, the invention has the advantages that:
1. the telescopic connecting component of the bridge steel anti-collision guardrail can adapt to the telescopic characteristic of a long-span and long-link bridge, realizes the longitudinal, transverse and rotary three-dimensional displacement function of the telescopic connecting component of the steel anti-collision guardrail, and has wide application prospect;
2. according to the telescopic connecting component of the bridge steel anti-collision guardrail, the telescopic function of the bridge steel anti-collision guardrail is realized through rolling of the vertical and horizontal rollers arranged on the connecting sleeve, conventional contact sliding is changed into rolling movement, component friction in the using process is greatly reduced, the durability of the components is improved, and in addition, the outer ring of the roller is provided with the nylon layer, so that the noise in the telescopic working process of the components is avoided;
3. the telescopic connecting assembly of the bridge steel anti-collision guardrail structurally avoids the adoption of long round holes, and the telescopic connecting assembly has no open holes, so that the risk of failure of the connecting assembly caused by invasion of foreign matters is avoided; the collision-resisting beam is a complete square steel pipe member, and has no weak strength region and strong collision resistance; the appearance of the steel beam is neat and beautiful.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is an enlarged sectional view taken along line A-A of FIG. 1;
FIG. 3 is an elevational view of the coupling sleeve and rolling assembly combination of the present invention;
FIG. 4 is a plan view of the coupling sleeve and rolling assembly combination of the present invention;
FIG. 5 is an enlarged sectional view B-B of FIG. 3;
FIG. 6 is an enlarged cross-sectional view taken at C-C of FIG. 3;
FIG. 7 is a schematic view of the structure of the vertical roller and/or the horizontal roller of the present invention;
fig. 8 is a cross-sectional view taken along line D-D of fig. 7.
Illustration of the drawings:
1. a cross beam; 11. fixing the cross beam; 12. moving the beam; 2. connecting a sleeve; 21. a rectangular roller hole; 22. a circular bearing bore; 3. a rolling component; 31. a vertical roller; 32. a horizontal roller; 4. an anchor bolt; 5. a cylindrical bearing; 6. a steel roller; 7. a nylon layer.
Detailed Description
In order to facilitate an understanding of the invention, the invention will be described more fully and in detail below with reference to the accompanying drawings and preferred embodiments, but the scope of the invention is not limited to the specific embodiments below.
As shown in fig. 1 to 8, the telescopic connection assembly on the bridge steel crash barrier of the present embodiment includes a beam 1, a connection sleeve 2, a rolling assembly 3 and an anchor bolt 4 at two sides of an expansion joint (N1 is a center line of the expansion joint in fig. 1), the beam 1 includes a fixed beam 11 and a movable beam 12, one end of the connection sleeve 2 is fixed in the fixed beam 11 through the anchor bolt 4, a rubber pad is disposed between the anchor bolt 4 and the connection sleeve, which can effectively prevent the anchor bolt from loosening, and the other end of the connection sleeve 2 extends into the movable beam 12; the rolling component 3 is fixedly arranged at the end part of the connecting sleeve 2 and can roll in the movable cross beam 12; the guardrail telescopic connecting assembly of the embodiment changes conventional contact sliding into rolling movement, so that the assembly friction in the use process is greatly reduced, the durability of the assembly is improved, the long round holes are structurally avoided, the telescopic connecting assembly is free of open holes, and the risk of failure of the connecting assembly caused by invasion of foreign matters is avoided; the cross beam which meets the collision is a complete square steel pipe component, so that a weak strength area is not reserved, and the anti-collision capacity is strong; the appearance of the steel beam is neat and beautiful.
In the present embodiment, the fixed beam 11 and the movable beam 12 have the same external dimensions and are located on the same axis N4; the ends of the fixed beam 11 and the movable beam 12 are aligned with a beam end line N2 of the bridge, and the fixed beam 11 and the movable beam 12 are both square tube structures.
In this embodiment, the rolling assembly 3 includes one or more coaxial vertical rollers 31, one or more coaxial horizontal rollers 32, and a cylindrical bearing 5 used in cooperation with the vertical rollers 31 and the horizontal rollers 32, and the cylindrical bearing 5 is welded and fixed to the connection sleeve 2 after passing through the vertical rollers 31, the horizontal rollers 32, and the connection sleeve 2, respectively.
In this embodiment, vertical roller 31 and horizontal roller 32 all include steel gyro wheel 6 and the nylon layer 7 of outsourcing, and 6 outer lanes of steel gyro wheel have set up nylon layer 7, have avoided the production of the flexible working process noise of rolling subassembly 3, and the internal diameter of steel gyro wheel 6 is the same with cylindrical bearing 5's diameter.
In this embodiment, the diameter of the vertical roller 31 is smaller than the vertical length of the inner ring of the movable beam 12 by a certain dimension a, and the diameter of the horizontal roller 32 is smaller than the horizontal length of the inner ring of the movable beam 12 by a certain dimension b, so as to adapt to the three-way (longitudinal, horizontal, rotational) deformation of the bridge structure; a. the value of b is increased along with the increase of the span and the coupling length of the bridge structure, but is not more than the difference value of the length of the inner ring of the movable beam 12 and the length of the outer ring of the connecting sleeve 2 in each direction; the longitudinal distance between the vertical roller 31 and the horizontal roller 32 is d, wherein d is not less than 10cm and not more than 50cm, parameters such as a, b and d are reasonably selected to enable the bridge steel anti-collision guardrail telescopic connecting assembly of the embodiment to adapt to the telescopic characteristic of a long-span and long-link bridge, the longitudinal, transverse and rotary three-way displacement function of the steel anti-collision guardrail telescopic connecting assembly is realized, and the steel anti-collision guardrail telescopic connecting assembly has a wide application prospect.
In this embodiment, the cylindrical bearing 5 of the vertical roller 31 is installed with a certain distance to the middle lower part of the connecting sleeve 2, that is, the horizontal central axis N3 of the cylindrical bearing 5 of the vertical roller 31 is located below the horizontal central axis N4 of the connecting sleeve 2, and the lower end of the vertical roller 31 contacts with the movable beam 12.
In this embodiment, the moving side of the connection sleeve 2 is provided with a rectangular roller hole 21 along the height direction of the rolling assembly 3 and a circular bearing hole 22 perpendicular to the height direction of the rolling assembly 3.
In the embodiment, the clearance between the rectangular roller hole 21 and the left end and the right end of the rolling assembly 3 is c1, the clearance between the rectangular roller hole 21 and the upper side and the lower side of the rolling assembly 3 is c2, wherein the c1 is adjusted within the range of 0.1cm to 5cm of c1, and the c2 is adjusted within the range of 0.1cm to 5cm of c 2.
In this embodiment, the sides of the rectangular roller holes 21 are all edge grinding structures.
Claims (10)
1. The utility model provides a flexible coupling assembling on bridge steel crash barrier which characterized in that: the expansion joint comprises a cross beam (1), connecting sleeves (2), a rolling assembly (3) and an anchor bolt (4) which are arranged on two sides of the expansion joint, wherein the cross beam (1) comprises a fixed cross beam (11) and a movable cross beam (12), one end of each connecting sleeve (2) is fixed in the fixed cross beam (11) through the anchor bolt (4), and the other end of each connecting sleeve (2) extends into the movable cross beam (12); the rolling component (3) is fixedly arranged at the end part of the connecting sleeve (2) and can roll in the movable cross beam (12).
2. The telescopic connection assembly on the bridge steel crash barrier of claim 1, wherein: the fixed cross beam (11) and the movable cross beam (12) have the same external dimension and are positioned on the same axis; the ends of the fixed beam (11) and the movable beam (12) are aligned with the beam end line of the bridge.
3. The telescopic connection assembly on the bridge steel crash barrier of claim 1, wherein: the rolling assembly (3) comprises one or more coaxial vertical rollers (31), one or more coaxial horizontal rollers (32) and cylindrical bearings (5) matched with the vertical rollers (31) and the horizontal rollers (32) for use, and the cylindrical bearings (5) are welded and fixed with the connecting sleeve (2) after penetrating through the vertical rollers (31), the horizontal rollers (32) and the connecting sleeve (2) respectively.
4. The telescopic connection assembly on the bridge steel crash barrier of claim 3, wherein: vertical gyro wheel (31) and horizontal gyro wheel (32) all include steel gyro wheel (6) and nylon layer (7) of outsourcing thereof, the internal diameter of steel gyro wheel (6) is the same with cylindrical bearing's (5) diameter.
5. The telescopic connection assembly on the bridge steel crash barrier of claim 3, wherein: the diameter of the vertical roller (31) is smaller than the vertical length of the inner ring of the movable cross beam (12) by a certain size a, and the diameter of the horizontal roller (32) is smaller than the horizontal length of the inner ring of the movable cross beam (12) by a certain size b; a. the value of b is increased along with the increase of the span and the coupling length of the bridge structure, but is not more than the difference value of the length of the inner ring of the movable beam (12) and the length of the outer ring of the connecting sleeve (2) in the respective directions.
6. A telescoping connection assembly on a bridge steel crash barrier according to any one of claims 3-5, wherein: the longitudinal distance between the vertical roller (31) and the horizontal roller (32) is d, wherein d is more than or equal to 10cm and less than or equal to 50 cm.
7. A telescoping connection assembly on a bridge steel crash barrier according to any one of claims 3-5, wherein: the horizontal central axis of the cylindrical bearing (5) of the vertical roller (31) is positioned below the horizontal central axis of the connecting sleeve (2), and the lower end of the vertical roller (31) is in contact with the movable cross beam (12).
8. A telescoping connection assembly on a bridge steel crash barrier according to any one of claims 1-5, wherein: and a rectangular roller hole (21) along the height direction of the rolling assembly (3) and a circular bearing hole (22) vertical to the height direction of the rolling assembly (3) are formed in the moving side of the connecting sleeve (2).
9. The telescopic connection assembly on the bridge steel crash barrier of claim 8, wherein: the clearance between the rectangular roller hole (21) and the left end part and the right end part of the rolling assembly (3) is c1, the clearance between the rectangular roller hole (21) and the upper side and the lower side of the rolling assembly (3) is c2, wherein the adjustment range of c1 is more than or equal to 0.1cm and less than or equal to c1 and less than or equal to 5cm, and the adjustment range of c2 is more than or equal to 0.1cm and less than or equal to c2 and less than or equal to 5 cm.
10. The telescopic connection assembly on the bridge steel crash barrier of claim 8, wherein: the side edges of the rectangular roller holes (21) are of edge grinding structures.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010373648.9A CN111424544A (en) | 2020-05-06 | 2020-05-06 | Flexible coupling assembling on bridge steel anticollision barrier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010373648.9A CN111424544A (en) | 2020-05-06 | 2020-05-06 | Flexible coupling assembling on bridge steel anticollision barrier |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111424544A true CN111424544A (en) | 2020-07-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010373648.9A Pending CN111424544A (en) | 2020-05-06 | 2020-05-06 | Flexible coupling assembling on bridge steel anticollision barrier |
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| CN (1) | CN111424544A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112411370A (en) * | 2020-11-20 | 2021-02-26 | 上海市政工程设计研究总院（集团）有限公司 | Bridge anti-collision guardrail connecting device and bridge |
-
2020
- 2020-05-06 CN CN202010373648.9A patent/CN111424544A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112411370A (en) * | 2020-11-20 | 2021-02-26 | 上海市政工程设计研究总院（集团）有限公司 | Bridge anti-collision guardrail connecting device and bridge |
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