CN213896729U

CN213896729U - Special crack control device of public road bridge roof beam

Info

Publication number: CN213896729U
Application number: CN202022695573.4U
Authority: CN
Inventors: 杨志华; 徐刚; 金鑫; 徐智勇; 钱冬冬; 梁宇剑; 章揆; 阮子健
Original assignee: Anhui Road and Bridge Engineering Co Ltd
Current assignee: Anhui Road and Bridge Engineering Co Ltd
Priority date: 2020-11-20
Filing date: 2020-11-20
Publication date: 2021-08-06
Anticipated expiration: 2030-11-20

Abstract

The utility model discloses a special anti-cracking device of public road bridge roof beam, including pier and bridge floor, it is adjacent the position level that is close to the bridge floor between the pier is provided with the connecting plate, regional equidistance between connecting plate and the bridge floor is provided with a plurality of prestressing force crotch of group, the prestressing force crotch includes first crotch, second crotch and articulated portion, the middle part of first crotch and second crotch is articulated through articulated portion. The utility model relates to a special crack control device of highway bridge, design prestressing force fork arm structure, two sets of fork arms receive the effect of drawing together in opposite directions of spring, make the local of bridge floor always receive the effect of adduction power, and can offset the effect of external force always, prevent the crack of bridge floor; reinforcing ribs are designed to enhance the connecting effect of the fork rods and the bridge deck; design the connecting plate, play on the one hand and connect the pier, reinforced effect, on the other hand provides the holding power for the fork arm structure, is suitable for different working conditions, brings better use prospect.

Description

Special crack control device of public road bridge roof beam

Technical Field

The utility model relates to a public road bridge roof beam field, in particular to special anti cracking device of public road bridge roof beam.

Background

The bridge generally comprises an upper structure, a lower structure, a support and an auxiliary structure, wherein the upper structure is also called a bridge span structure and is a main structure for crossing obstacles, mainly a bridge deck, and the lower structure comprises a bridge abutment, a pier and a foundation; the existing bridge deck is generally provided with stay cables which can prevent the bridge deck from cracking to a certain extent, but along with the increase of the service life of the bridge, the prestress effect of the stay cables is reduced, the cracking phenomenon of the bridge deck is increased, certain adverse effect is brought in the use process of the bridge, at the moment, an auxiliary device and/or a structure are needed to strengthen protection, and therefore, the anti-cracking device special for the highway bridge is provided.

SUMMERY OF THE UTILITY MODEL

A primary object of the utility model is to provide a special crack control device of public road bridge roof beam can effectively solve the problem in the background art.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a special anti-cracking device of public road bridge roof beam, includes pier and bridge floor, and is adjacent the position level of being close to the bridge floor between the pier is provided with the connecting plate, regional equidistance between connecting plate and the bridge floor is provided with a plurality of prestressing force crotch of group, prestressing force crotch includes first crotch, second crotch and articulated portion, the middle part of first crotch and second crotch is articulated through articulated portion, the upper end of first crotch and second crotch be fixed with two sets of strengthening ribs and the strengthening rib is vertical upwards to stretch into in the bridge floor, be connected with interior extension spring between the lower tip of first crotch and second crotch, the position that is close in the first crotch and second crotch outside on the connecting plate is provided with the bumping post, the bumping post all with first crotch and second between utilize outer extension spring to be connected.

Preferably, the first fork rod and the second fork rod are made of steel materials, and the bottoms of the first fork rod and the second fork rod are close to the plate surface of the connecting plate.

Preferably, the reinforcing ribs are provided with a plurality of groups of pulling spines.

Preferably, the first fork rod and the second fork rod are provided with a shackle, and the end parts of the inner tension spring and the outer tension spring are provided with spring hooks acting on the shackle.

Compared with the prior art, the utility model discloses following beneficial effect has: the anti-cracking device special for the highway bridge is designed with a prestressed fork rod structure, and two groups of fork rods are subjected to the opposite drawing action of the springs, so that the local part of the bridge floor is always subjected to the effect of inward contraction, the effect of external force can be counteracted, and the bridge floor is prevented from cracking; reinforcing ribs are designed to enhance the connecting effect of the fork rods and the bridge deck; the connecting plate is designed to play roles of connecting and reinforcing the bridge pier on one hand and provide supporting force for the fork rod structure on the other hand; the whole device is simple in design, the using effect is better than that of a traditional mode, and the parts which are not involved in the device are the same as or can be realized by adopting the prior art.

Drawings

Fig. 1 is a schematic view of the overall structure of the anti-cracking device for highway bridges of the present invention;

fig. 2 is a partial enlarged view of the anti-cracking device for highway bridges shown in fig. 1.

In the figure: 1. a bridge pier; 2. a bridge deck; 3. a connecting plate; 4. a prestressed yoke; 5. a first yoke; 6. a second yoke; 7. a hinge portion; 8. reinforcing ribs; 9. an inner tension spring; 10. a bumping post; 11. an outer tension spring.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

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

As shown in fig. 1-2, the anti-cracking device special for the highway bridge comprises piers 1 and a bridge floor 2, a connecting plate 3 is horizontally arranged between the adjacent piers 1 and at a position close to the bridge floor 2, a plurality of groups of prestressed fork bars 4 are equidistantly arranged in an area between the connecting plate 3 and the bridge floor 2, the prestressed fork bars 4 comprise first fork bars 5, the bridge structure comprises a second fork rod 6 and a hinge part 7, the middle parts of a first fork rod 5 and the second fork rod 6 are hinged through the hinge part 7, two groups of reinforcing ribs 8 are fixed at the upper ends of the first fork rod 5 and the second fork rod 6, the reinforcing ribs 8 vertically extend upwards into the bridge deck 2, an inner tension spring 9 is connected between the lower ends of the first fork rod 5 and the second fork rod 6, a blocking column 10 is arranged on a connecting plate 3 at a position close to the outer sides of the first fork rod 5 and the second fork rod 6, and the blocking column 10 is connected with the first fork rod 5 and the second fork rod 6 through an outer tension spring 11;

the first fork rod 5 and the second fork rod 6 are both made of steel materials, and the bottoms of the first fork rod 5 and the second fork rod 6 are close to the plate surface of the connecting plate 3; the reinforcing ribs 8 are provided with a plurality of groups of pulling spines to achieve the fastening effect; the first fork rod 5 and the second fork rod 6 are provided with shackles, and the ends of the inner tension spring 9 and the outer tension spring 11 are provided with spring hooks acting on the shackles.

The basic principles and the main features of the invention and the advantages of the invention have been shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a special crack control device of highway bridge, includes pier (1) and bridge floor (2), its characterized in that: the bridge structure is characterized in that a connecting plate (3) is horizontally arranged between adjacent piers (1) and close to the bridge floor (2), a plurality of groups of prestressed fork rods (4) are arranged at equal intervals between the connecting plate (3) and the bridge floor (2), each prestressed fork rod (4) comprises a first fork rod (5), a second fork rod (6) and a hinged portion (7), the middle portions of the first fork rods (5) and the second fork rods (6) are hinged through the hinged portions (7), two groups of reinforcing ribs (8) are fixed at the upper ends of the first fork rods (5) and the second fork rods (6), the reinforcing ribs (8) vertically extend upwards into the bridge floor (2), an inner tension spring (9) is connected between the lower end portions of the first fork rods (5) and the second fork rods (6), and blocking columns (10) are arranged at positions, close to the outer sides of the first fork rods (5) and the second fork rods (6), on the connecting plate (3), the stop column (10) is connected with the first fork rod (5) and the second fork rod (6) through an outer tension spring (11).

2. The special anti-cracking device for the highway bridge according to claim 1, which is characterized in that: first fork arm (5) and second fork arm (6) are the steel material and make, the face of connecting plate (3) is pressed close to the bottom of first fork arm (5) and second fork arm (6).

3. The special anti-cracking device for the highway bridge according to claim 1, which is characterized in that: the reinforcing ribs (8) are provided with a plurality of groups of pulling thorns.

4. The special anti-cracking device for the highway bridge according to claim 1, which is characterized in that: the first fork rod (5) and the second fork rod (6) are provided with shackles, and the ends of the inner tension spring (9) and the outer tension spring (11) are provided with spring hooks acting on the shackles.