CN217078475U - A prestressed concrete continuous slab bridge reinforcement structure - Google Patents

Abstract

The utility model relates to a road traffic building technical field specifically is a continuous slab bridge reinforced structure of prestressed concrete, including girder and pier, the girder carries on in the upper end of pier, is provided with the triangle additional strengthening between the left and right sides of girder and the pier, and the lower extreme of girder is provided with the post of inserting of pegging graft in pier upper end inner chamber, the triangle additional strengthening comprises the roof of fixing terminal surface under the girder, fixes locating plate and the centre gripping in the pier side at inboard preceding curb plate and the posterior lateral plate of roof, and beneficial effect is: by arranging the assembled triangular reinforcing frame, the mounting precision of the triangular frame is greatly enhanced, the connecting strength and the supporting deformation strength are improved, and the structure is more stable; through setting up the centre gripping of constant head tank to the front and back curb plate, improved with the joint strength of pier, cooperation transversely extends split bolt and extension rod for girder extrusion's effort is shared on reinforcing plate and triangle reinforcing frame downwards, has increased its bearing strength greatly.

Description

A prestressed concrete continuous slab bridge reinforcement structure

technical field

The utility model relates to the technical field of road traffic construction, in particular to a prestressed concrete continuous slab bridge reinforcement structure.

Background technique

Many prestressed concrete continuous slab bridges have been built for a long time, and their load levels are difficult to match with today's traffic conditions, especially the lack of bending and shear bearing capacity, which has potential safety hazards. Therefore, in order to adapt it to today's traffic load conditions, bridges often need to be reinforced.

Existing reinforcement measures generally include external prestressed reinforcement, prestressed carbon fiber board reinforcement, and carbon fiber cloth reinforcement, but these reinforcement methods are expensive, and through on-site load tests, it is found that their effect is not obvious, and the cost is high. Dismantling and repairing is complicated; the existing reinforcement measures are also carried out by means of triangular brackets, but the triangular bracket diagonal bracing has no self-fixing measures except for both ends, and because the rigidity of the triangular bracket is small, and the inclined steel plate itself is not in an ideal state When the vehicle passes on the bridge, it will inevitably cause the steel plate to bend and deform, so the reinforcement measures are useless.

Therefore, a prestressed concrete continuous slab bridge reinforcement structure is provided to solve the problem of the fastening and supporting strength of the bridge reinforcement tripod.

Utility model content

The purpose of the present invention is to provide a prestressed concrete continuous slab bridge reinforcement structure to solve the problems raised in the above background technology.

To achieve the above object, the utility model provides the following technical solutions:

A prestressed concrete continuous slab bridge reinforcement structure comprises a main girder and a bridge pier, the main girder is mounted on the upper end of the bridge pier, the left and right sides of the main girder and the bridge pier are provided with triangular reinforcing frames, and the lower end of the main girder is provided with inserts The post connected to the inner cavity of the upper end of the bridge pier, the triangular reinforcing frame is composed of a top plate fixed on the lower end face of the main girder, a positioning plate fixed on the side of the bridge pier, and a front side plate and a rear side plate clamped on the inner side of the top plate, A plurality of groups of linearly distributed T-shaped reinforcing plates are arranged between the front side plates and the rear side plates, and extension rods transversely connected to the positioning plates are arranged on the T-shaped reinforcing plates.

Preferably, a pair of positioning slots are symmetrically arranged on the left and right sides of the upper end of the bridge pier, a slot is arranged at the upper end of the bridge pier, and the inserting post is vertically inserted into the slot.

Preferably, the positioning plate is press-fitted on the outside of the positioning groove, and a first plug board and a second plug board are vertically welded on the side of the front side board and the rear side board close to the bridge pier. The two plug boards are press-fitted and inserted between the positioning board and the bridge pier.

Preferably, the positioning plate, the post, the bridge pier, the first plug board and the second plug board are all provided with a plurality of sets of alignment holes that are linearly distributed up and down and penetrated by horizontal reorganization, and the alignment holes are inserted with nuts. Tightened tie bolts.

Preferably, a plurality of groups of pre-embedded bolts are pre-embedded on the lower end surface of the main beam, the upper end of the T-shaped reinforcing plate is provided with a fixed transverse plate, and the front and rear sides of the T-shaped reinforcing plate are press-fitted on the front side plate and the rear side On the inner wall of the plate, the fixed horizontal plate and the top plate are both fixed and installed on the outer wall of the lower end of the main beam through embedded bolts.

Preferably, the T-shaped reinforcing plate is vertically provided with a transversely penetrating through hole, and an extension rod is inserted into the through hole.

Preferably, the extension rod transversely penetrates through a plurality of linearly distributed sets of T-shaped reinforcing plates, one end of the extension rod is provided with a connection end cover that is threadedly installed, and the other side of the connection end cover is rotatably installed at the end of the tie bolt department.

Compared with the prior art, the beneficial effects of the present utility model are:

1. The utility model greatly enhances the installation accuracy of the tripod by setting the assembled triangular reinforcement frame, reduces the positional offset caused by welding, improves the strength of the connection and the strength of the support deformation, and the structure is more stable;

2. The utility model improves the connection strength with the bridge pier by setting the positioning groove to clamp the front and rear side plates, and cooperates with the horizontally extending anti-tension bolts and extension rods, so that the downward pressing force of the main beam is shared on the reinforcing plate. And on the triangular reinforcement frame, the compressive strength is greatly increased.

Description of drawings

Fig. 1 is the structural representation of the utility model;

2 is a schematic diagram of the three-dimensional structure of a triangular reinforcing frame of the present invention;

FIG. 3 is a top view of the triangular reinforcement frame of the present invention.

In the picture: 1. Main beam; 2. Bridge pier; 3. Triangular reinforcement frame; 4. Top plate; 5. T-shaped reinforcement plate; 6. Rear side plate; 7. Positioning plate; ; 10, connecting end cover; 11, positioning slot; 12, front side plate; 13, fixed horizontal plate; 14, embedded bolt; 15, first plug board; 16, second plug board; 17, through hole; 18 , Alignment hole; 19, post; 20, slot.

Detailed ways

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the implementations. example. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.

Please refer to FIG. 1 to FIG. 3, the utility model provides a technical solution:

A prestressed concrete continuous slab bridge reinforcement structure comprises a main girder 1 and a bridge pier 2, the main girder 1 is mounted on the upper end of the bridge pier 2, and the lower end of the main girder 1 is provided with a post 19 inserted into the inner cavity of the upper end of the bridge pier 2, A pair of positioning slots 11 are symmetrically arranged on the left and right sides of the upper end of the bridge pier 2, a slot 20 is arranged on the upper end of the bridge pier 2, and the insertion post 19 is vertically inserted into the slot 20. The positioning of the mounting position of the main beam 1 and the bridge pier 2 is formed, thereby enhancing the definition of the lateral position.

A triangular reinforcement frame 3 is arranged between the left and right sides of the main beam 1 and the bridge pier 2. The triangular reinforcement frame 3 consists of a top plate 4 fixed on the lower end face of the main beam 1, a positioning plate 7 fixed on the side of the bridge pier 2 and clamped on the top plate. 4. The inner front side plate 12 and the rear side plate 6 are formed. The positioning plate 7 is pressed on the outside of the positioning groove 11. The front side plate 12 and the rear side plate 6 are vertically welded with the first plug plate 15 and The second plug-in board 16, the first plug-in board 15 and the second plug-in board 16 are press-fitted and inserted between the positioning plate 7 and the bridge pier 2, and are connected by a plug-and-assembled plate to improve the triangular reinforcement frame 3 and the bridge pier 2. connection strength.

Between the front side plate 12 and the rear side plate 6 are arranged multiple groups of T-shaped reinforcing plates 5 linearly distributed, the lower end surface of the main beam 1 is pre-embedded with multiple groups of pre-embedded bolts 14, and the upper end of the T-shaped reinforcing plate 5 is provided with fixed The transverse plate 13, the front and rear sides of the T-shaped reinforcing plate 5 are pressed against the inner walls of the front side plate 12 and the rear side plate 6, and the fixed transverse plate 13 and the top plate 4 are fixed and installed on the lower end of the main beam 1 through embedded bolts 14. On the outer wall, the vertical fixed installation of the T-shaped reinforcing plate 5 is realized through the cooperation of the fixed horizontal plate 13 and the embedded bolts 14 , and the vertical bearing force of the triangular reinforcing frame 3 is increased by using the T-shaped reinforcing plate 5 .

The T-shaped reinforcing plate 5 is provided with an extension rod 9 that is laterally connected to the positioning plate 7 , and the positioning plate 7 , the post 19 , the bridge pier 2 , the first plug plate 15 and the second plug plate 16 are provided with multiple sets of linearly distributed upper and lower The alignment hole 18 penetrating through the horizontal reorganization, the alignment hole 18 and the pull bolt 8 fastened by the nut are inserted, the T-shaped reinforcing plate 5 is vertically provided with a transversely penetrating through hole 17, and the through hole 17 is inserted into the There is an extension rod 9, the extension rod 9 runs through multiple groups of T-shaped reinforcing plates 5 linearly distributed, one end of the extension rod 9 is provided with a connecting end cover 10 that is threadedly installed, and the other side of the connecting end cover 10 is rotatably installed on the pull bolt. At the end of 8, the pressure exerted by the main beam 1 is mostly vertical downward extrusion, thereby causing the bending deformation of the triangular reinforcement frame 3 in the vertical direction. The downward pressing force is extended and dispersed to the T-shaped reinforcing plate 5 , which greatly increases the compressive strength of the triangular reinforcing frame 3 and improves the protection of the bridge pier 2 .

Working principle: First, the insertion of the post 19 and the slot 20 is used to form the positioning of the main beam 1 and the bridge pier 2, which further enhances the limitation of the lateral position. The connection strength between the frame 3 and the bridge pier 2 is achieved through the cooperation of the fixed transverse plate 13 and the embedded bolts 14 to realize the vertical fixed installation of the T-shaped reinforcement plate 5, and the use of the T-shaped reinforcement plate 5 increases the vertical direction of the triangular reinforcement frame 3. of pressure.

The pressure exerted by the main beam 1 is mostly vertical downward extrusion, thereby causing the bending deformation of the triangular reinforcement frame 3 in the vertical direction. The force is extended and dispersed to the T-shaped reinforcing plate 5 , which greatly increases the compressive strength of the triangular reinforcing frame 3 and improves the protection of the bridge pier 2 .

Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes and modifications can be made to these embodiments without departing from the principles and spirit of the present invention , alternatives and modifications, the scope of the present invention is defined by the appended claims and their equivalents.

Claims (7)

1. A prestressed concrete continuous slab bridge reinforcement structure, comprising a main girder (1) and a bridge pier (2), characterized in that: the main girder (1) is mounted on the upper end of the bridge pier (2), and the main girder (1) A triangular reinforcement frame (3) is arranged between the left and right sides of the bridge pier (2), and the lower end of the main beam (1) is provided with a post (19) inserted into the inner cavity of the upper end of the bridge pier (2). The reinforcement frame (3) is composed of a top plate (4) fixed on the lower end face of the main beam (1), a positioning plate (7) fixed on the side surface of the bridge pier (2), and a front side plate (12) clamped on the inner side of the top plate (4). ) and a rear side plate (6), a plurality of groups of linearly distributed T-shaped reinforcing plates (5) are arranged between the front side plate (12) and the rear side plate (6), the T-shaped reinforcing plates (5) ) is provided with an extension rod (9) that is transversely connected to the positioning plate (7). 2. A prestressed concrete continuous slab bridge reinforcement structure according to claim 1, characterized in that: a pair of positioning grooves (11) are symmetrically arranged on the left and right sides of the upper end of the pier (2), and the The upper end is provided with a slot (20), and the plug (19) is vertically inserted into the slot (20). 3. A prestressed concrete continuous slab bridge reinforcement structure according to claim 1, characterized in that: the positioning plate (7) is pressed on the outside of the positioning groove (11), and the front side plate (12) A first plug board (15) and a second plug board (16) are vertically welded to the side of the rear side plate (6) close to the bridge pier (2), the first plug board (15) and the second plug board (16) ) is press-fitted and inserted between the positioning plate (7) and the bridge pier (2). 4. A prestressed concrete continuous slab bridge reinforcement structure according to claim 3, characterized in that: the positioning plate (7), the post (19), the pier (2), the first plug (15) and the second plug board (16) are provided with alignment holes (18) through which multiple groups of horizontal reorganization are distributed linearly up and down. ). 5. A prestressed concrete continuous slab bridge reinforcement structure according to claim 1, characterized in that: the lower end surface of the main beam (1) is pre-embedded with multiple groups of pre-embedded bolts (14), and the T-shaped The upper end of the reinforcing plate (5) is provided with a fixed transverse plate (13), and the front and rear sides of the T-shaped reinforcing plate (5) are press-fitted on the inner walls of the front side plate (12) and the rear side plate (6). Both the transverse plate (13) and the top plate (4) are fixedly installed on the outer wall of the lower end of the main beam (1) through embedded bolts (14). 6 . The prestressed concrete continuous slab bridge reinforcement structure according to claim 1 , wherein the T-shaped reinforcing plate ( 5 ) is vertically provided with a through hole ( 17 ) penetrating horizontally. An extension rod (9) is inserted into the through hole (17). 7. A prestressed concrete continuous slab bridge reinforcement structure according to claim 6, characterized in that: the extension rods (9) transversely penetrate through multiple groups of T-shaped reinforcing plates (5) distributed linearly, and the extension rods (9) ) is provided with a connection end cover (10) that is rotatably installed with threads, and the other side of the connection end cover (10) is rotatably installed at the end of the pull bolt (8).

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