CN111501582A

CN111501582A - Road and bridge crack fixed knot constructs

Info

Publication number: CN111501582A
Application number: CN202010360910.6A
Authority: CN
Inventors: 杨阳; 李飞; 杨宏平; 张兴元; 刘莉萍
Original assignee: Longdong University
Current assignee: Longdong University
Priority date: 2020-04-30
Filing date: 2020-04-30
Publication date: 2020-08-07
Anticipated expiration: 2040-04-30
Also published as: CN115434260A; CN114717978A; CN111501582B

Abstract

The invention discloses a road and bridge crack fixing structure which comprises a cover plate, a thermal expansion and contraction mechanism arranged in a crack and more than one fixing inserted rod inserted into the bottom of the crack, wherein the cover plate is arranged at the upper end of the crack, a groove is formed in the position, opposite to the crack, of the cover plate, more than one piece of spring steel is installed on the top surface of the groove, two ends of the spring steel are bent downwards and abut against the road surface outside the crack, the lower end of the thermal expansion and contraction mechanism is fixedly connected with the fixing inserted rod through a connecting piece, the upper end of the thermal expansion and contraction mechanism is connected with the cover plate through a fixing bolt, and fillers in the crack realize thermal expansion and contraction through the thermal expansion and contraction mechanism. The invention can effectively share the pressure of the filler after expansion with heat and contraction with cold through the expansion with heat and contraction with cold mechanism, greatly reduces the probability of appearing a gap again, and can effectively protect the filler through the design of the cover plate, so that the filler can be fully connected with the road surface, and the vehicle can directly run through the upper end of the cover plate, thereby avoiding influencing the traffic in the process of maintenance.

Description

Road and bridge crack fixed knot constructs

Technical Field

The invention relates to the technical field of roads and bridges, in particular to a road and bridge crack fixing structure.

Background

The road and bridge generally comprises a road surface, a roadbed, a bridge, a tunnel engineering, a traffic engineering and the like, wherein the road surface is most easily damaged, cracks are easily generated due to various reasons, the service life of the road and bridge can be reduced due to the generation of the cracks, the roadbed can be influenced due to the infiltration of rainwater, at present, the existing road surface repairing technology mostly finishes the repairing of the cracks through simple fillers such as concrete, asphalt and the like, the mode has short acting duration, the expansion of the cracks cannot be avoided, the pressure dispersion is not carried out on the poured concrete, the cracks occur again at the repaired position due to the melting after the thermal expansion and the cold contraction, and after the concrete is poured, generally for no long time, vehicles can pass through the repaired position, the strength of the concrete at the moment is not high (due to the problems of environment and material proportion, the possible curing time is not sufficient enough, and the vehicle can not pass through the maintenance process), the vehicle is easy to loose from the original pavement after passing through, thereby influencing the repairing effect.

Disclosure of Invention

The technical problem to be solved by the present invention is to provide a road and bridge crack fixing structure to solve the problems proposed in the background art.

The invention is realized by the following technical scheme: the utility model provides a road and bridge crack fixed knot constructs, includes the apron, sets up expend with heat and contract with cold mechanism and the more than one fixed inserted bar that inserts the crack bottom in the crack, the apron sets up in the crack upper end to cover the crack, the apron just is equipped with a recess to crack department, installs more than one spring steel on the top surface of recess, and the spring steel both ends are all downwarping, and support on the road surface of crack outside, expend with heat and contract with cold mechanism lower extreme passes through connecting piece and fixed inserted bar fixed connection, expend with heat and contract with cold mechanism upper end and pass through fixing bolt and cover connection, and the filler in the crack realizes expend with heat and contract with cold through expend with heat and contract with cold mechanism.

As preferred technical scheme, expend with heat and contract with cold mechanism includes fixed plate and the serpentine spring more than a slice, the fixed plate lower extreme forms an installation cavity, serpentine spring more than a slice is installed in the installation cavity, be equipped with the first screw hole more than one on the top surface of fixed plate, the apron is just being equipped with a mounting groove to first screw hole department, the bottom surface of mounting groove is just all being equipped with the second screw hole to first screw hole department, the equal threaded connection of fixing bolt is in the second screw hole, the fixing bolt lower extreme all inserts in the first screw hole, and all with first screw hole threaded connection.

As the preferred technical scheme, the connecting piece all includes the bearing, the screw rod and rotatory ring, be equipped with the third screw hole on the top surface of fixed inserted bar, the bearing all sets up the lower extreme in expend with heat and contract with cold mechanism intermediate fixed plate, the outer loop of bearing all with expend with heat and contract with cold mechanism intermediate fixed plate's bottom surface welded fastening, the screw rod upper end is all installed in the inner ring of bearing, the screw rod lower extreme all inserts in the third screw hole to all with third screw hole threaded connection, rotatory ring all installs and is served in the screw rod is located external one.

As the preferred technical scheme, the edges of the cover plate are all arranged in an arc structure.

As the preferred technical scheme, the top surface of the fixed plate in the thermal expansion and cold contraction mechanism and the surface of the filler in the crack are arranged in a flush manner.

Preferably, the top surface of the fixing bolt and the surface of the cover plate are flush.

As the preferred technical scheme, the method also comprises the step of integrally forming a plurality of metal woven mesh strips at the periphery of the metal woven mesh, and forming a plurality of round holes for pouring the metal woven mesh strips on the inner wall of the crack.

The invention has the beneficial effects that: the invention has simple structure, can effectively share the pressure of the filler after expansion with heat and contraction with cold through the expansion with heat and contraction with cold mechanism, greatly reduces the probability of appearing gaps again, can effectively protect the filler through the design of the cover plate, ensures that the filler can be fully connected with the road surface, and vehicles can directly run through the upper end of the cover plate, thereby avoiding influencing the traffic in the process of maintenance.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic view of the overall structure of the present invention;

fig. 2 is a schematic structural diagram of the expansion and contraction mechanism of the present invention.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.

In the description of the present invention, it should be noted that unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "disposed" are to be construed broadly and can, for example, be fixedly connected, disposed, detachably connected, disposed, or integrally connected and disposed. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As shown in fig. 1 and 2, the road and bridge crack fixing structure comprises a cover plate 1, a thermal expansion and contraction mechanism arranged in a crack and more than one fixing inserted rod 9 inserted into the bottom of the crack, wherein the cover plate 1 is arranged at the upper end of the crack and covers the crack, a groove 2 is arranged at the position, opposite to the crack, of the cover plate 1, more than one piece of spring steel 3 is arranged on the top surface of the groove 2, two ends of the spring steel 3 are bent downwards and are of a U-shaped structure, the spring steel is prevented from contacting with a filler and is abutted against the road surface outside the crack, the lower end of the thermal expansion and contraction mechanism is fixedly connected with the fixing inserted rod 9 through a connecting piece, the upper end of the thermal expansion and contraction mechanism is connected with the cover plate 1 through a fixing bolt 5, and the filler in the crack expands with heat and contracts with cold through the thermal expansion and.

Wherein, the existence of recess can effectually avoid the direct contact filler of apron, has avoided being connected between filler and the apron, and can effectually play the cushioning effect through the spring steel, drives over the back at the vehicle from the apron, can have a decurrent pressure, and pressure can make the spring steel crooked, drives over the back, makes the spring steel resume deformation.

In this embodiment, expend with heat and contract with cold mechanism includes fixed plate 6 and the serpentine spring 8 more than the slice, 6 lower extremes of fixed plate form an installation cavity 7, serpentine spring 8 more than the slice is installed in installation cavity 7, be equipped with more than one first screw hole 10 on the top surface of fixed plate 6, apron 1 is just being equipped with an installation groove 4 to first screw hole 10 department, the bottom surface of installation groove 4 is just all being equipped with the second screw hole to first screw hole 10 department, 5 equal threaded connection of fixing bolt are in the second screw hole, 5 lower extremes of fixing bolt all insert in first screw hole 10, and all with first screw hole 10 threaded connection.

In this embodiment, the connecting members each include a bearing 11, a screw 12, and a rotating ring 13, a third screw hole 14 is provided on the top surface of the fixed inserting rod 9, the bearings 11 are all disposed at the lower end of the fixed plate 6 in the thermal expansion and contraction mechanism, the outer ring of the bearing 11 is welded and fixed to the bottom surface of the fixed plate 6 in the thermal expansion and contraction mechanism, the upper end of the screw 12 is all installed in the inner ring of the bearing 11, the lower end of the screw 12 is all inserted into the third screw hole 14 and is all in threaded connection with the third screw hole 14, and the rotating ring 13 is all installed at one end of the screw 12 located outside.

In this embodiment, the edge of apron 1 all is the arc structure setting, makes the vehicle can travel to the apron top along the arc limit, has reduced the vibration range of vehicle.

In this embodiment, the top surface of fixed plate 6 in the expend with heat and contract with cold mechanism and the surperficial parallel and level setting of filler in the crack, after taking off the apron, parallel and level between filler, fixed plate and the road has avoided the jolt that the unevenness on road surface caused.

In this embodiment, the top surface of the fixing bolt 5 and the surface of the cover plate 1 are flush, so that the influence of the protrusion on the surface of the cover plate on the passing of the vehicle is avoided.

Wherein, after the filler takes place the thermal expansion, can extrude the outer wall of installation cavity, the extrusion force can be used in on the serpentine spring of inside, makes serpentine spring compression for the filler has the effect that a pressure shared, has avoided expend with heat and the crack appears, and when the shrinkage, serpentine spring can kick-back, and its pressure after kick-backing can be pressed in the filler, has avoided the shrinkage and the crack that causes.

Preferably, still include metal mesh grid (not shown), metal mesh grid's peripheral integrated into one piece is equipped with a plurality of metal mesh grid strips, sets up a plurality of round holes that are used for pouring metal mesh grid strip on the cracked inner wall, and the metal mesh grid level sets up in the crack, and installation cavity 7 runs through the metal mesh grid setting to can strengthen the joint strength on filler and original road surface, further avoid fissured reappearance.

When the concrete implementation is arranged, firstly, a plurality of round holes are formed in the inner wall of the crack, then the expansion and contraction mechanism is arranged in the crack, the screw rod is rotated through the rotating ring to be screwed into the third screw hole, and the expansion and contraction mechanism is fixed, wherein the top surface of the expansion and contraction mechanism needs to be flush with the surface of the road, after the fixation is completed, the metal woven mesh is sleeved outside the installation cavity, then the metal woven mesh strip is arranged in the round hole formed in the inner wall of the crack in an adhering mode through epoxy adhesive steel, then the filler is injected into the crack until the filler is flush with the top surface of the expansion and contraction mechanism, at the moment, the cover plate covers the upper end of the crack, the crack is effectively covered, the wheel can directly run over the cover plate, the vehicle can pass through at the first time, the filler can be effectively protected, and the filler can be connected with the road in sufficient time, the cover plate is fixed with the expansion and contraction mechanism through the fixing bolt, so that the fixing bolt can be screwed out after the filler is completely fixed, and then the cover plate together with the spring steel is taken down, so that the cover plate can be reused.

The above description is only an embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that are not thought of through the inventive work should be included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope defined by the claims.

Claims

1. The utility model provides a road and bridge crack fixed knot constructs which characterized in that: including apron (1), set up expend with heat and contract with cold mechanism and more than one fixed inserted bar (9) that insert the crack bottom in the crack, apron (1) sets up in the crack upper end to cover the crack, apron (1) just is equipped with a recess (2) to crack department, install more than one spring steel (3) on the top surface of recess (2), spring steel (3) both ends are all crooked downwards, and support on the road surface of crack outside, expend with heat and contract with cold mechanism lower extreme passes through connecting piece and fixed inserted bar (9) fixed connection, expend with heat and contract with cold mechanism upper end is passed through fixing bolt (5) and is connected with apron (1), the filler in the crack realizes expend with heat and contract with cold through expend with heat and contract with cold mechanism.

2. The crack fixing structure for road and bridge according to claim 1, wherein: expend with heat and contract with cold mechanism includes fixed plate (6) and serpentine spring (8) more than a slice, fixed plate (6) lower extreme forms an installation cavity (7), serpentine spring (8) more than a slice are installed in installation cavity (7), be equipped with more than one first screw hole (10) on the top surface of fixed plate (6), apron (1) just is equipped with one mounting groove (4) to first screw hole (10) department, the bottom surface of mounting groove (4) just all is equipped with the second screw hole to first screw hole (10) department, the equal threaded connection in the second screw hole of fixing bolt (5), fixing bolt (5) lower extreme all inserts in first screw hole (10), and all with first screw hole (10) threaded connection.

3. The crack fixing structure for road and bridge according to claim 1, wherein: the connecting piece all includes bearing (11), screw rod (12) and rotatory ring (13), be equipped with third screw hole (14) on the top surface of fixed inserted bar (9), bearing (11) all set up in the lower extreme of expend with heat and contract with cold mechanism intermediate fixed plate (6), the outer loop of bearing (11) all with expend with heat and contract with cold mechanism intermediate fixed plate's (6) bottom surface welded fastening, screw rod (12) upper end is all installed in the inner ring of bearing (11), screw rod (12) lower extreme all inserts in third screw hole (14), and all with third screw hole (14) threaded connection, rotatory ring (13) are all installed in one of screw rod (12) position in the external world and are served.

4. The crack fixing structure for road and bridge according to claim 1, wherein: the edges of the cover plate (1) are all arranged in an arc structure.

5. The crack fixing structure for road and bridge according to claim 1, wherein: the top surface of the fixed plate (6) in the thermal expansion and cold contraction mechanism is flush with the surface of the filler in the crack.

6. The crack fixing structure for road and bridge according to claim 1, wherein: the top surface of the fixing bolt (5) is flush with the surface of the cover plate (1).

7. The crack fixing structure for road and bridge according to claim 1, wherein: the metal woven net is characterized by further comprising a metal woven net, a plurality of metal woven net strips are integrally formed on the periphery of the metal woven net, and a plurality of round holes for pouring the metal woven net strips are formed in the inner wall of the crack.