CN214362847U - Public road bridge roof beam expansion joint - Google Patents

Abstract

The utility model relates to a public road bridge roof beam expansion joint belongs to public road bridge roof beam construction technical field, and it includes: two steel bars arranged at intervals; and set up the cavity of billet opposite flank, wherein, the interval between the billet forms the expansion joint, be provided with the two-way buffer gear who is used for reducing the expansion joint vibrations in the cavity, two-way buffer gear includes: a horizontal buffer disposed within the cavity; and a vertical buffer member disposed on the top surface of the steel bar. In order to prolong the life at expansion joint, this application provides a public road bridge roof beam expansion joint, can reduce the expansion joint in the horizontal direction with the ascending vibrations in vertical direction when the vehicle passes through.

Description

Public road bridge roof beam expansion joint

Technical Field

The utility model relates to a field of public road bridge roof beam construction especially relates to a public road bridge roof beam expansion joint.

Background

In order to prevent the building components from cracking due to the change of the climate temperature, an expansion joint is usually provided at a suitable position along the construction joint direction of the building or the structure.

The expansion joint is of great importance to the use safety of the highway and the bridge, can play a positive role in the water prevention of the highway and the bridge, and is widely applied to road construction.

But in present expansion joint use, when the vehicle is when passing the expansion joint, expansion joint self often produces more violent vibrations, has influenced passenger's in the vehicle to a certain extent and has taken experience, has also caused certain damage to the self structure of expansion joint simultaneously.

In order to solve the problems, the applicant thinks that the expansion joint vibrates violently when a vehicle passes through the expansion joint in the using process.

SUMMERY OF THE UTILITY MODEL

In order to prolong the life at expansion joint, this application provides a public road bridge roof beam expansion joint, can reduce the expansion joint in the horizontal direction with the ascending vibrations in vertical direction when the vehicle passes through.

The application provides a pair of public road bridge roof beam expansion joint adopts following technical scheme:

a highway bridge expansion joint, comprising: two steel bars arranged at intervals; and set up the cavity of billet opposite flank, wherein, the interval between the billet forms the expansion joint, be provided with the two-way buffer gear who is used for reducing the expansion joint vibrations in the cavity, two-way buffer gear includes: a horizontal buffer disposed within the cavity; and a vertical buffer member disposed on the top surface of the steel bar.

Through adopting above-mentioned technical scheme, flexible mouthful can reserve certain space for the deformation of billet to make the billet possess certain flexible ability. Simultaneously, horizontal bolster and vertical bolster can reduce the vibrations of expansion joint in horizontal direction and vertical direction to the life at extension expansion joint.

Preferably, the upper rotating plate is hinged to the top wall of the steel bar on two sides of the telescopic opening; the lower rotating plate is hinged on the bottom wall of the steel bars at two sides of the telescopic opening; the upper extrusion plate is hinged to one side of the upper rotating plate, which is far away from the inner top wall of the steel bar; and a lower extrusion plate hinged to one side of the lower rotating plate, which is far away from the inner bottom wall of the steel bar; a plurality of settings are in lower stripper plate is kept away from diapire one side in the billet, and the top is fixed go up stripper plate and keep away from the damping spring of roof one side in the billet.

Through adopting above-mentioned technical scheme, when the billet shakes in the horizontal direction, go up the rotation board and rotate around the articulated department that corresponds separately with lower rotation board to drive stripper plate and lower stripper plate displacement in vertical direction respectively, thereby damping spring absorbs the kinetic energy of some upper stripper plate and lower stripper plate and realizes the shock-absorbing effect of buffering.

Preferably, the cover plate is arranged on the top surface of the steel bar, wherein the cover plate completely covers the expansion opening, and the top surface of the cover plate is flush with the ground.

Through adopting above-mentioned technical scheme, make the more steady that the vehicle through the billet went with the apron of ground parallel and level, reduced the height drop of billet and ground to the vibrations of billet in vertical side have been reduced.

Preferably, the top surface of the cover plate is coated with wear-resistant paint.

Through adopting above-mentioned technical scheme, wear-resisting coating has reduced the wearing and tearing that the apron top surface received, has prolonged the life of apron.

Preferably, the top surfaces of the steel bars are provided with waterproof rubber belts, and the two sides of the covering plate are provided with joint sealing glue for filling gaps between the covering plate and the ground on the two sides of the covering plate.

Through adopting above-mentioned technical scheme, waterproof rubber area has separated expansion mouth and cavity, has reduced the water through flexible mouthful infiltration cavity, and the glue of caulking simultaneously can reduce the rivers on ground and get into the billet through the gap of apron both sides.

Preferably, the opposite side face of the cavity is provided with a plurality of anchoring ribs for fixing the steel bar, and two ends of each anchoring rib are fixed on the same side face of the steel bar, which is not provided with the cavity.

Through adopting above-mentioned technical scheme, the anchor muscle can be fixed for the billet provides, has reduced the time of installation billet, has improved the installation effectiveness of billet.

Preferably, the surface of the anchoring rib is provided with a rib.

Through adopting above-mentioned technical scheme, the rib makes anchor muscle surface become unsmooth to increased the frictional force on anchor muscle and fixed anchor muscle ground, improved the structural stability of billet

In summary, the present application includes at least one of the following beneficial technical effects:

1. when the expansion joint vibrates in the horizontal direction, the horizontal displacement of the expansion joint can be converted into the vertical displacement of the upper extrusion plate and the lower extrusion plate through the horizontal buffer mechanism, and the damping effect is realized by using the damping spring arranged between the upper extrusion plate and the lower extrusion plate, so that the vibration of the expansion joint in the horizontal direction is reduced;

2. when the expansion joint vibrates in the vertical direction, the cover plate which is flush with the ground can separate the steel bar from the vibration source, and meanwhile, the vibration source can move more stably when passing through the expansion joint, so that the vibration in the vertical direction of the expansion joint is reduced;

3. when there is ponding on ground, the water that flows in the expansion joint can be reduced to the joint filling glue of apron both sides and the waterproof rubber area of flexible mouthful below, plays the effect of protection expansion joint structure to the life at extension expansion joint.

Drawings

FIG. 1 is a schematic diagram of the overall structure in an embodiment of the present application;

fig. 2 is a side sectional view of the expansion joint in the embodiment of the present application.

Description of reference numerals: 11. a steel bar; 12. a cavity; 13. a flexible opening; 14. a ground body; 21. rotating the plate upwards; 22. a lower rotating plate; 23. an upper stripper plate; 24. a lower stripper plate; 25. a damping spring; 31. a cover plate; 311. wear-resistant paint; 41. a waterproof rubber tape; 42. joint filling glue; 51. anchoring ribs; 52. and (4) ribs.

Detailed Description

The present application is described in further detail below with reference to figures 1-2.

The embodiment of the application discloses public road bridge roof beam expansion joint.

Referring to fig. 1, a highway bridge expansion joint includes: billet 11, billet 11 are buried underground under ground body 14, and billet 11 has two, and two 11 laminating of billet are put, and 11 shapes of billet are the cuboid, have seted up cavity 12 at 11 length direction opposite flank of two billets, simultaneously, leave the interval between two billet 11 to form two expansion joint 13 at the top surface of two billet 11 and bottom surface, can leave certain space for the deformation of 11 horizontal directions of billet through flexible mouthful 13. Further, anchor bars 51 capable of fixing the steel bar 11 are attached to both sides of the steel bar 11 not provided with the cavity 12, and ribs 52 are cast on the anchor bars 51.

When the vehicle passes through, for reducing the ascending vibrations of the vertical direction of steel bar 11, there is shielding plate 31 at steel bar 11 top surface horizontal installation, and shielding plate 31 height and ground body 14 parallel and level have paintd wear-resistant coating 311 at shielding plate 31 top surface, and simultaneously, shielding plate 31 is located telescopic mouth 13 top, and has filled joint compound 42 in shielding plate 31 both sides and ground body 14's gap department.

When a vehicle drives through the cover plate 31, the cover plate 31 is flush with the ground body 14, so that the vibration of the vehicle tire caused by the height difference between the steel bar 11 and the ground body 14 when the vehicle tire passes through the telescopic opening 13 is reduced.

When the vehicle passes through, for reducing the ascending vibrations of 11 horizontal directions of billet, the bilateral symmetry of roof expansion mouth 13 articulates in billet 11 has last rotating plate 21, and it has lower rotating plate 22 with last rotating plate 21 symmetry to articulate on the diapire in billet 11, and one side level that keeps away from the billet 11 interior roof at last rotating plate 21 articulates there is last stripper plate 23, and one side level that keeps away from the billet 11 in lower rotating plate 22 articulates there is lower stripper plate 24. A plurality of damping springs 25 are equidistantly mounted on one side face of the upper extrusion plate 23 opposite to the lower extrusion plate 24, and two ends of each damping spring 25 are respectively fixed on the bottom face of the upper extrusion plate 23 and the top face of the lower extrusion plate 24.

When both sides of the steel bar 11 vibrate in the horizontal direction, the upper rotating plate 21 and the lower rotating plate 22 start to rotate and drive the upper squeeze plate 23 and the lower squeeze plate 24 to move in the vertical direction, and at the same time, the damping spring 25 installed between the upper squeeze plate 23 and the lower squeeze plate 24 absorbs a part of the kinetic energy, thereby achieving the effect of buffering and damping.

Install waterproof rubber area 41 below flexible mouth 13, waterproof rubber area 41 is used for preventing that the inner structure of cavity 12 from receiving the corruption of water, and waterproof rubber area 41 both sides are fixed on roof in billet 11, and waterproof rubber area 41 can reduce the water in the infiltration cavity 12 to a certain extent.

The implementation principle of this application embodiment a public road bridge roof beam expansion joint does:

the steel bars 11 are horizontally embedded below the ground body 14 needing to be provided with the expansion joint in advance through the anchoring ribs 51 on the two sides of the steel bars 11, the cover plate 31 is arranged at the position of the expansion joint 13, the height of the cover plate 31 is kept flush with the ground body 14, and meanwhile the gap filling glue 42 is filled in the gap between the two sides of the cover plate 31 and the ground body 14.

When the vehicle drives over steel bar 11, apron 31 provides the support to the vehicle, and simultaneously, the vehicle is because self gravity exerts a decurrent pressure to apron 31, and this pressure passes through steel bar 11 from the top down and transmits in proper order for rotor plate, stripper plate and damping spring 25, and damping spring 25 produces deformation thereupon and has absorbed a part of kinetic energy, has reduced the vibrations of vehicle to reach the absorbing effect of buffering.

When the vehicle is far away from the steel bar 11, the ground body 14 generates horizontal vibration, the upper rotating plate 21 and the lower rotating plate 22 start to rotate and respectively drive the upper squeezing plate 23 and the lower squeezing plate 24 to move in the vertical direction, and the damping spring 25 between the upper squeezing plate 23 and the lower squeezing plate 24 absorbs part of the kinetic energy of the upper squeezing plate 23 and the lower squeezing plate 24 so as to achieve the effect of buffering and damping.

In addition, for the damping spring 25 reduction in the protection cavity 12 receive the automobile exhaust sewage corrosion after rainwater and the liquefaction, be fixed with waterproof rubber area 41 in the flexible mouth 13 inboard at billet 11 top, waterproof rubber area 41 reaches certain waterproof effect through isolated external and 11 inside cavities 12 of billet, simultaneously because waterproof rubber area 41 self deformability is stronger, can bear certain extrusion and drag when billet 11 takes place deformation. In addition, the wear-resistant paint 311 coated on the top surface of the covering plate 31 also prolongs the service life of the covering plate 31 and reduces the wear of the covering plate 31.

The above are all preferred embodiments of the present application, and the present embodiment is only explained for the present application, and the protection scope of the present application is not limited by this, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims (5)

1. A highway bridge expansion joint, comprising: two steel bars (11) arranged at intervals; and set up in cavity (12) of billet (11) opposite flank, wherein, the interval between billet (11) forms expansion joint (13), its characterized in that, be provided with the two-way buffer gear who is used for reducing the expansion joint vibrations in cavity (12), two-way buffer gear includes: a horizontal buffer disposed within the cavity (12); and vertical buffers provided on top surfaces of the steel bars (11),

the horizontal buffer includes: an upper rotating plate (21) hinged on the inner top wall of the steel bar (11) at two sides of the telescopic opening (13); a lower rotating plate (22) hinged on the inner bottom wall of the steel bar (11) at two sides of the telescopic opening (13); an upper pressing plate (23) hinged to the side of the upper rotating plate (21) far away from the inner top wall of the steel bar (11); and a lower stripper plate (24) hinged to the side of said lower rotary plate (22) remote from the inner bottom wall of said bar (11); a plurality of damping springs (25) which are arranged on the side of the lower stripper plate (24) far away from the inner bottom wall of the steel bar (11) and the tops of which are fixed on the side of the upper stripper plate (23) far away from the inner top wall of the steel bar (11),

the vertical buffer includes: the cover plate (31) is arranged on the top surface of the steel bar (11), wherein the cover plate (31) completely covers the expansion opening (13), and the top surface of the cover plate (31) is flush with the ground.

2. A road bridge expansion joint according to claim 1, wherein the top surface of said cover plate (31) is coated with a wear-resistant paint (311).

3. The expansion joint for road bridges according to claim 1, wherein the top surfaces of the steel bars (11) are provided with waterproof rubber strips (41), and the two sides of the cover plate (31) are provided with gap filling glue (42) for filling gaps between the cover plate (31) and the ground at the two sides of the cover plate (31).

4. A road bridge expansion joint according to claim 1, wherein a plurality of anchoring ribs (51) for fixing the steel bar (11) are provided on the opposite side of the steel bar (11) where the cavity (12) is opened, and both ends of the anchoring ribs (51) are fixed on the same side of the steel bar (11) where the cavity (12) is not opened.

5. A road bridge expansion joint according to claim 4, wherein said anchorage rib (51) is provided with ribs (52) on its surface.

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