CN219342832U - Full prefabricated expansion joint component of concrete segment pin-connected panel - Google Patents

Abstract

The utility model discloses a fully prefabricated expansion joint component assembled by concrete segments, which is arranged between two oppositely arranged beams and slabs. The prefabricated component is embedded with a positioning piece and a steel bar, and two adjacent prefabricated components are spliced together through the positioning piece. And installed on the girder plates on both sides, so that the elastic connectors are installed between the prefabricated components on both sides, forming an expansion joint component flush with the bridge deck pavement, which can meet the deformation requirements of the bridge deck. The structure of the fully prefabricated expansion joint component Simple and ingenious, easy to install and disassemble, low cost of prefabricated component materials, saving construction cost, reducing construction time, reducing labor intensity of construction personnel, improving construction efficiency, and is beneficial to the concrete segment assembled fully prefabricated expansion joint component Application and promotion in the field of bridge construction technology.

Description

A concrete segment assembled fully prefabricated expansion joint component

technical field

The utility model relates to the technical field of bridge construction, which is a concrete segment assembled fully prefabricated expansion joint component.

Background technique

Bridge expansion joints refer to devices installed between bridge girder ends, between girder ends and abutments, or at the hinged positions of bridges in order to meet the requirements of bridge deck deformation. It is required that the expansion joints can freely expand and contract in two directions parallel to and perpendicular to the bridge axis, and are firm and reliable. The vehicles should run smoothly without sudden jumps and noises; they should be able to prevent rainwater and garbage from infiltrating and blocking; installation, inspection, and maintenance , Elimination of dirt should be simple and convenient. Where expansion joints are set, railings and bridge deck pavement must be disconnected.

The types of bridge expansion joints mainly include elastomer expansion joints, shear expansion joints, steel support expansion joints, modular support expansion joints and butt joint expansion joints. However, the bridge expansion joints will be damaged due to factors such as its installation and the unevenness of the bridge deck, the aging of the bridge deck pavement, etc. In addition, due to the repeated action of the wheel load, expansion joint diseases often occur, and the section steel expansion joints are prone to "jumping" When the "car" and the section steel are broken, and the car jumping phenomenon occurs, the concrete in the anchorage area will be repeatedly impacted by the car load and cracked or even damaged. Finally, the expansion joint needs to be replaced as a whole because of the serious damage of the expansion joint.

At present, the replacement of expansion joints is generally carried out by sealing roads and on-site construction (without changing the form of expansion joints). The concrete in the anchorage area is generally repaired by steel fiber concrete pouring on site, but the performance of ordinary steel fiber concrete is difficult to withstand long-term vehicle loads. Keep working normally without cracks or damage. Some scholars use steel fiber ultra-high-performance concrete to pour the anchorage area. Due to its high strength and high durability, ultra-high-performance concrete can work normally under long-term vehicle loads, but the high cost of steel fibers leads to high repair costs, and ultra-high-performance concrete During the construction period, the reduced machinability leads to difficulty in forming and cannot exert its performance. On-site pouring also takes more time. It has a greater impact on roads with large traffic volumes, especially expressways. Some scholars also use prefabricated general sub-components. To reduce the construction difficulty and construction time, but there are still some components that need to be poured on site.

In the prior art, the steps of replacing the expansion joints are complicated, the construction time of the construction personnel is increased, the efficiency is low, and the material cost is high, so it is difficult to meet the requirements of the replacement of the expansion joints of modern bridges.

Utility model content

In order to overcome the defects in the above-mentioned prior art, the purpose of this utility model is to provide a fully prefabricated expansion joint component assembled by concrete segments. The labor intensity of construction personnel and the improvement of construction efficiency are conducive to the application and promotion of the above-mentioned fully prefabricated expansion joint components in the technical field of bridge construction.

In order to achieve the purpose of the above-mentioned utility model, the utility model adopts the following technical solutions: a fully prefabricated expansion joint component assembled by concrete segments, which is arranged between two oppositely arranged beams and slabs; includes prefabricated components and elastic connectors, adjacent The two prefabricated components are spliced with each other and installed on the two beams respectively. The joints between the prefabricated components and the elastic connectors are provided with concavo-convex grooves that cooperate with each other, and the elastic connectors are connected to each other. between two opposite prefabricated components.

As a preferred solution of the present invention, one end of the prefabricated component is provided with a positioning piece, and the other end is provided with a positioning hole, and the positioning of two adjacent prefabricated components is realized by embedding the positioning piece in the positioning hole. assembled.

As a preferred solution of the present utility model, the prefabricated component is further provided with a grouting pipe, and the grouting pipe communicates with the positioning hole.

As a preferred solution of the present utility model, there are two positioning members, and the two positioning members are arranged parallel to each other.

As a preferred solution of the present invention, the prefabricated component is embedded with reinforcement bars in the anchorage area and U-shaped reinforcement bars.

As a preferred solution of the present invention, the opening of the reinforcement in the anchorage area is embedded in the prefabricated component downwards, and the two ends of the reinforcement in the anchorage zone partially protrude from the prefabricated component for connecting the beams and slabs.

As a preferred solution of the present invention, the beam slab is provided with a reinforcement hole matching the reinforcement in the anchorage area.

As a preferred solution of the present invention, a plurality of U-shaped steel bars and a steel bar mesh formed by connecting the anchorage zone steel bars are arranged at equal intervals on the prefabricated components.

As a preferred solution of the present utility model, the prefabricated component is connected to the elastic connector by a staggered seam, and is flush with the surface of the bridge deck pavement.

As a preferred solution of the present utility model, the connection between the prefabricated component and the elastic connector is in a stepped structure.

Compared with the prior art, it has the following beneficial effects: a concrete segment assembled fully prefabricated expansion joint member in the utility model is arranged between two oppositely arranged beams and slabs, and through two adjacent prefabricated The components are spliced with each other and installed on the two beam slabs respectively. The elastic connectors are installed between the prefabricated components opposite to each other, which can meet the deformation requirements of the bridge deck, and the prefabricated components are easy to install and disassemble, reducing the number of expansion joints Replacement time, the structure of this component is simple and ingenious, which reduces the labor intensity of construction personnel, improves construction efficiency, and is conducive to the application and promotion of the fully prefabricated expansion joint component in the technical field of bridge construction.

Further, the prefabricated components of the expansion joint components are embedded with reinforcement bars and U-shaped reinforcements in the anchorage area, and the reinforcement bars in the anchorage area are connected to the beam slab, so that the prefabricated components can be more firmly installed on the beam slab, and the reinforcement bars in the anchorage area and the U-shaped reinforcement The steel bars are fixedly connected to form a steel mesh that is evenly distributed in the prefabricated components, which increases the structural stability of the entire prefabricated components.

Furthermore, the connection between the prefabricated component and the elastic connector of the expansion joint component is provided with a concave-convex groove structure, so that the elastic connector and the prefabricated component can be installed in cooperation with each other, and the structure is ingenious, which is conducive to the installation and disassembly of the expansion joint component. Improve construction efficiency.

Description of drawings

Fig. 1 is the structural sectional view of a kind of concrete section assembly type fully prefabricated expansion joint member in embodiment 1;

Fig. 2 is a schematic structural view of a concrete segment assembled fully prefabricated expansion joint component prefabricated component in embodiment 1;

Fig. 3 is a schematic structural view of an elastic connector of a concrete segment assembled fully prefabricated expansion joint member in embodiment 1;

Fig. 4 is a schematic structural view of a concrete segment assembled fully prefabricated expansion joint component grouting pipeline in embodiment 1;

Fig. 5 is the top view of a kind of concrete section assembly type fully prefabricated expansion joint member in embodiment 1;

Fig. 6 is a schematic diagram of the installation of a concrete segment assembled fully prefabricated expansion joint member in embodiment 2;

Fig. 7 is a top view of a concrete segment assembled fully prefabricated expansion joint member in Embodiment 2.

Reference signs: 1. Beam slab; 2. Rebar in anchorage area; 3. Positioning piece; 4. U-shaped rebar; 5. Bridge deck pavement; 6. Grouting pipe; 7. Prefabricated component; 8. Positioning hole; 9. Elastic connectors.

Detailed ways

Below in conjunction with accompanying drawing, the utility model embodiment is described in detail.

Embodiment 1: As shown in Fig. 1 to Fig. 5, a fully prefabricated expansion joint member of a concrete segment assembly type is arranged between two oppositely arranged beams and slabs 1, including a prefabricated member 7 and an elastic connector 9, the elastic The material of the connector 9 is vulcanized rubber, which has high elasticity and tensile strength, and can adapt to the deformation of the bridge deck. The material of the prefabricated component 7 is a concrete block with a length of 0.5m. The connection between the elastic connector 9 and the prefabricated component 7 is set There is a concave-convex groove structure, so that the elastic connector 9 and the prefabricated component 7 can be connected to each other through the concave-convex groove structure. In order to increase the firmness of the connection between the prefabricated components 7, a plurality of prefabricated components 7 are respectively installed on the beam plates 1 on both sides by splicing each other, so that the elastic connectors 9 can be installed between the prefabricated components 7 oppositely arranged on both sides.

The installation of bridge expansion joints in the prior art first makes grooves on the paved bridge deck, puts the expansion joint device in the groove, then welds the anchoring steel bars of the expansion joint device and the reserved steel bars in the groove, and then fills the formwork and pours Concrete, the entire installation process has many steps and is labor intensive. In the installation of the expansion joint components of the utility model, the prefabricated components 7 are spliced and installed on the beam plates 1 on both sides by injecting epoxy mortar, and then the elastic connectors 9 are connected between the prefabricated components 7 on both sides, so that the expansion joint components and the bridge The surface of the surface pavement layer 5 is even, and this process is completed before the bridge deck pavement, and steps such as steel bar welding and template filling are omitted. Labor intensity is improved, and construction efficiency is improved. At the same time, the material of the prefabricated component 7 is concrete, which is lower in cost than the expansion joint device in the prior art and saves material cost.

The positioning part 3 of this embodiment is a longitudinal steel bar, and two adjacent prefabricated components 7 need to be installed on the beam plate 1 by splicing, so the two above-mentioned positioning components 3 are parallel and vertically embedded in the above-mentioned prefabricated component 7, and at the same time, set The front end of the locator 3 extends 5 cm from the front end of the prefabricated component 7, and the rear end of the locator 3 leaves a distance of 5 cm from the rear end of the prefabricated component 7 to form a positioning hole 8 for other locators 3 to insert. The front end of the positioning piece 3 of another prefabricated component 7 can be inserted into the positioning hole 8 of the previous prefabricated component 7, so that multiple prefabricated components 7 are connected through longitudinal reinforcement.

In order to make the connection between the above-mentioned prefabricated components 7 stronger, the vertical side of the grouting pipeline 6 is set to penetrate the above-mentioned prefabricated components 7 and communicate with the positioning hole 8. The grouting pipeline 6 passes through the prefabricated components 7 and leads to the beam plate 1. The epoxy mortar flows onto the beam slab 1, so that the prefabricated component 7 and the beam slab 1 can be better bonded together. The horizontal side of the grouting pipeline 6 is connected with the positioning holes 8 on both sides, so that the whole grouting pipeline 6 and the positioning holes 8 on both sides are all connected, so the epoxy mortar can be injected into both sides by the upper port of the grouting pipeline 6 The positioning holes 8 on the side promote the connection between the longitudinal steel bars in the positioning holes 8 and the prefabricated components 7 more firmly, and improve the overall structural stability formed by the connection of the prefabricated components 7 .

The prefabricated component 7 in this embodiment is embedded with reinforcement bars 2 in the anchorage area and U-shaped reinforcement bars 4 , and the reinforcement bars 2 in the anchorage area and the U-shaped reinforcement bars 4 are fixedly connected by welding. In order to enable the above-mentioned prefabricated component 7 to be fixedly installed on the above-mentioned beam slab 1, the shape of the reinforcement bar 2 in the anchorage area is U-shaped, and the opening is buried inside the above-mentioned prefabricated component 7, so that part of the reinforcement bars at both ends of the anchorage zone reinforcement bar 2 protrude from the prefabricated The member 7 is used to connect the beam plate 1 .

Since the reinforcement bar 2 in the anchorage area needs to be inserted into the beam plate 1, the beam plate 1 is provided with a reinforcement hole matching the reinforcement bar 2 in the anchorage area, so that the prefabricated component 7 and the beam plate 1 can be fixedly connected together through the reinforcement bar 2 in the anchorage area.

In order to increase the structural firmness of the prefabricated component 7, the material of the prefabricated component 7 is basalt fiber ultra-high performance concrete, which has high strength and low cost, which not only saves construction costs, but also increases the service life. Structural glue is applied on the contact surface with the bridge deck pavement layer 5 to ensure the bonding performance of the prefabricated component 7 and the bridge deck pavement layer 5 . In order to ensure the stability of the connection between the reinforcement bar 2 and the prefabricated component 7 in the anchorage area, the reinforcement bar 2 in the anchorage area and the U-shaped steel bar 4 are fixedly connected to form a reinforcement mesh, and the structure of the reinforcement mesh is more stable, so that the reinforcement bar 2 in the anchorage area and the prefabricated component 7 are connected more closely , and equidistantly arrange the reinforcement mesh in the prefabricated component 7, thereby improving the structural strength of the prefabricated component 7.

Since the expansion joint components need to have sufficient strength and rigidity, the prefabricated components 7 and the elastic connectors 9 are arranged to be staggered to connect, which can make the stress of the expansion joints more uniform and increase the firmness of the overall structure. In addition, the prefabricated component 7 has a stepped structure and is compatible with the elastic connector 9, and the expansion joint component formed by the connection between the two is flush with the surface of the bridge pavement layer 5, which can effectively prevent the prefabricated component 7 from cracking due to vehicle jumping. , improving the safety of vehicles and the service life of expansion joint components.

In order to make the connection between the prefabricated member 7 and the elastic connector 9 more firm and increase the overall structural strength of the expansion joint member, the surface of the prefabricated member 7 and the elastic connector 9 is roughened, and the beam slab 1 and the bridge deck pavement layer 5 are added. Excellent connection performance, and the structure is easy to install and disassemble, which also effectively improves the construction efficiency. In addition, in order to further increase the structural strength, structural glue is applied on the joint surface of the prefabricated component 7 and the elastic connector 9 to increase the overall firmness of the prefabricated component 7 and the elastic connector 9 .

A fully prefabricated expansion joint member of concrete segment assembly in this embodiment is arranged between two oppositely arranged beams 1, and two adjacent prefabricated members 7 are spliced with each other and installed on the beams 1 on both sides respectively. , so that the elastic connector 9 is installed between the prefabricated components 7 oppositely arranged on both sides to form an expansion joint component, which can meet the deformation requirements of the bridge deck and is easy to replace. The structure of the expansion joint component is ingenious and reduces the labor intensity of the construction personnel. The construction efficiency is improved, which is beneficial to the application and popularization of the above-mentioned concrete segment assembled fully prefabricated expansion joint components in the technical field of bridge construction.

Embodiment 2: As shown in Figures 6 to 7, the difference between this embodiment and Embodiment 1 is that the expansion joint member in this embodiment is provided with a zigzag structure around the elastic connector 9, prefabricated The connection surface between the member 7 and the elastic connector 9 is also set in a corresponding zigzag structure, so that the elastic connector 9 and the prefabricated member 7 can be connected through a mortise and tenon structure to form an expansion joint member. This connection method is not only convenient for installation, but also increases The overall structural strength of the expansion joint member.

The above description of the disclosed embodiments enables those skilled in the art to realize or use the utility model. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present utility model; Therefore, the present invention will not be limited to these embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Although this article uses many reference signs in the figure: 1. Beam slab; 2. Reinforcement bar in anchorage area; 3. Positioning piece; , prefabricated components; 8, positioning holes; 9, elastic connectors and other terms, but the possibility of using other terms is not excluded. These terms are only used to describe and explain the essence of the utility model more conveniently; interpreting them as any kind of additional limitation is contrary to the spirit of the utility model.

Claims (10)

1. A concrete segmental assembled fully prefabricated expansion joint member, characterized in that: it is arranged between two oppositely arranged beams and slabs (1); it includes a prefabricated member (7) and an elastic connector (9), adjacent to each other The two prefabricated components (7) are spliced with each other and installed on the two beams (1) respectively, and the joints between the prefabricated components (7) and the elastic connectors (9) are provided with a mutual fit connection The concave-convex grooves, the elastic connector (9) is connected between two oppositely arranged prefabricated components (7). 2. A concrete segment assembled fully prefabricated expansion joint member according to claim 1, characterized in that: one end of the prefabricated member (7) is provided with a positioning piece (3), and the other end is provided with a positioning hole (8 ), the assembly of two adjacent prefabricated components (7) is realized by embedding the positioning piece (3) in the positioning hole (8). 3. A concrete segment assembled fully prefabricated expansion joint member according to claim 2, characterized in that: the prefabricated member (7) is also provided with a grouting pipe (6), and the grouting pipe (6 ) communicate with the positioning hole (8). 4. A concrete segment assembled fully prefabricated expansion joint member according to claim 2, characterized in that there are two positioning pieces (3), and the two positioning pieces (3) are arranged parallel to each other. 5. A concrete segmental assembled fully prefabricated expansion joint member according to claim 1, characterized in that: said prefabricated member (7) is embedded with reinforcement bars (2) and U-shaped reinforcement bars (4) in the anchorage area. 6. A concrete segmental assembled fully prefabricated expansion joint member according to claim 5, characterized in that: the opening of the anchorage area reinforcement (2) is embedded in the prefabricated member (7), and the The two ends of the reinforcement bars (2) in the anchorage area have some reinforcement bars protruding from the prefabricated component (7) for connecting the beam and slab (1). 7. A concrete segmental assembled fully prefabricated expansion joint member according to claim 6, characterized in that: the beam slab (1) is provided with planting bars that are compatible with the reinforcement bars (2) in the anchorage area hole. 8. A concrete segmental assembled fully prefabricated expansion joint member according to claim 5, characterized in that: a plurality of U-shaped steel bars (4) and the steel bars (2) in the anchorage area are connected to form a steel mesh Arranged at equal intervals on the prefabricated components (7). 9. A concrete segment assembled fully prefabricated expansion joint member according to claim 2, characterized in that: the prefabricated member (7) is connected to the elastic connector (9) in a staggered joint, and connected to the bridge deck The surface of the paving layer (5) is even. 10. A concrete segment assembled fully prefabricated expansion joint member according to claim 9, characterized in that: the connection between the prefabricated member (7) and the elastic connector (9) is in a stepped structure.

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