Railway ballast track bridge beam end telescopic device

Abstract

The utility model belongs to the technical field of bridge engineering, and particularly relates to a railway ballast track bridge beam end telescopic device. Comprising a first beam body embedded part, a second beam body embedded part, a ballast blocking steel cover plate and waterproof curtain cloth, and the first beam body embedded part and the second beam body embedded part are arranged in a beam body at the two sides of a beam seam at equal intervals according to the beam width; the fixed end of the ballast blocking steel cover plate is located at the top of the first water blocking table on one side of the beam seam and fixedly connected with the first beam body embedded part, and the movable end of the ballast blocking steel cover plate crosses over the beam seam and makes movable contact with the top face of the second water blocking table. The waterproof curtain cloth is arranged at the beam seam and located below the ballast blocking steel cover plate, the length of the waterproof curtain cloth is consistent with that of the beam seam, the middle of the waterproof curtain cloth is concave, and the two ends of the waterproof curtain cloth are connected with the first beam body embedded part and the second beam body embedded part respectively; the upper ballast blocking steel cover plate provides rigid support, and the lower waterproof curtain cloth stops water; the ballast blocking steel cover plate and the waterproof curtain cloth can meet the requirement for horizontal and vertical telescopic creep of the bridge.

Description

Technical Field

[0001] The utility model belongs to the technical field of bridge engineering, and in particular relates to a railway ballasted track bridge beam end telescopic device. Background Art

[0002] The expansion device of railway bridge is set between adjacent beam ends or at the expansion joint between the beam body and the abutment. It plays the role of adapting to the expansion and contraction creep of the beam body, preventing slag falling and waterproofing, and is an important part of the bridge structure. The device must meet the requirements of the bridge to expand and contract freely in two directions parallel and perpendicular to the bridge axis, prevent rainwater from penetrating the expansion structure, prevent ballast or garbage from entering the expansion joint or falling from the beam through the expansion joint, affecting pedestrians or vehicles below. In addition, it is necessary to prevent rainwater and sewage from flowing into the beam end and the end of the prestressed anchor head at the beam end, which will cause the rust of the prestressed anchor to affect the service life of the beam body. At present, the commonly used railway bridge expansion devices are mainly weathering steel and elastomer. Among them, the weathering steel expansion device has a complex structure and cumbersome construction process; the elastomer expansion device is suitable for railway common span concrete simply supported bridges with an expansion amount not exceeding 100mm, and has a small scope of application. Utility Model Content

[0003] The purpose of the utility model is to provide a railway ballasted track bridge beam end telescopic device based on the above-mentioned deficiencies of the prior art, which has a relatively simple structure and construction process and a wider range of applications.

[0004] The utility model provides the following technical solution: a railway ballasted track bridge beam end telescopic device, comprising a first beam body embedded part, a second beam body embedded part, a ballast retaining steel cover plate and a waterproof curtain cloth, wherein the first beam body embedded part and the second beam body embedded part are arranged in the beam body at equal distances on both sides of the beam seam according to the beam width;

[0005] The fixed end of the ballast retaining steel cover is located at the top of the first water retaining platform on one side of the beam seam, the fixed end of the ballast retaining steel cover is fixedly connected to the embedded part of the first beam body, the movable end of the ballast retaining steel cover crosses the beam seam and is in movable contact with the top surface of the second water retaining platform, and a sliding space is reserved between the movable end of the ballast retaining steel cover and the second water retaining platform; the length of the ballast retaining steel cover is consistent with the length of the beam seam;

[0006] The waterproof curtain is arranged at the beam seam, below the ballast retaining steel cover plate. The length of the waterproof curtain is consistent with the length of the beam seam. The middle of the waterproof curtain is concave, and the two ends are respectively connected to the first beam body embedded parts and the second beam body embedded parts.

[0007] Furthermore, the first beam body embedded parts include first embedded round steel, embedded hook bars, top embedded steel plate, first side embedded steel plate and positioning steel pipe; the top embedded steel plate is located on the top surface of the beam body, the embedded hook bars are welded to the bottom of the top embedded steel plate, the first side embedded steel plate is located in the beam seam, the first side embedded steel plate is welded to the top embedded steel plate, the first embedded round steel is welded to the first side embedded steel plate, the positioning steel pipe is welded to the top of the top embedded steel plate, and the ballast steel cover plate is welded to the positioning steel pipe.

[0008] Furthermore, the second beam body embedded part includes a second embedded round steel and a second side embedded steel plate, the second side embedded steel plate is located in the beam seam, and the second embedded round steel is welded to the second side embedded steel plate.

[0009] Furthermore, a steel pad is welded between the first side embedded steel plate and the second side embedded steel plate, screw holes are opened on the steel pad, the waterproof curtain is clamped and fixed on the steel pad by a steel clamp, and the steel clamp and the steel pad are connected by bolts.

[0010] Furthermore, the positioning steel pipe is filled with concrete.

[0011] Furthermore, the first embedded round steel is perpendicular to the first side embedded steel plate.

[0012] Compared with the prior art, the advantages of the present invention are:

[0013] The utility model provides a railway ballasted track bridge beam end expansion device, which is provided with rigid support by an upper ballast retaining steel cover plate and water stopping by a lower waterproof curtain; the ballast retaining steel cover plate and the waterproof curtain can meet the needs of horizontal and vertical expansion and contraction creep of the bridge. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the structure of the utility model;

[0015] Figure 2 for Figure 1 Enlarged view of point A in the middle.

[0016] In the figure: 1- ballast retaining steel cover plate; 2- waterproof curtain; 3- first water retaining platform; 4- second water retaining platform; 5- first embedded round steel; 6- embedded hook reinforcement; 7- top surface embedded steel plate; 8- first side surface embedded steel plate; 9- positioning steel pipe; 10- second embedded round steel; 11- second side surface embedded steel plate; 12- steel pad; 13- steel splint; 14- bolt; 15- beam body; 16- beam seam. DETAILED DESCRIPTION

[0017] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] like Figure 1 , Figure 2 As shown: a railway ballasted track bridge beam end expansion device, including a first beam body embedded part, a second beam body embedded part, a ballast retaining steel cover plate 1 and a waterproof curtain 2, the first beam body embedded part and the second beam body embedded part are arranged in the beam body at equal intervals on both sides of the beam seam according to the beam width.

[0019] The fixed end of the ballast retaining steel cover plate 1 is located at the top of the first water retaining platform 3 on one side of the beam joint, the fixed end of the ballast retaining steel cover plate 1 is fixedly connected to the embedded part of the first beam body, the movable end of the ballast retaining steel cover plate 1 passes over the beam joint and is in movable contact with the top surface of the second water retaining platform 4, and a sliding space is reserved between the movable end of the ballast retaining steel cover plate 1 and the second water retaining platform 4; the length of the ballast retaining steel cover plate 1 is consistent with the length of the beam joint.

[0020] The waterproof curtain 2 is arranged at the beam joint, below the ballast retaining steel cover 1. The length of the waterproof curtain 2 is consistent with the length of the beam joint. The middle of the waterproof curtain 2 is concave into a certain arc to meet the horizontal and vertical expansion and contraction creep requirements of the bridge. The two ends of the waterproof curtain 2 are respectively connected to the first beam embedded parts and the second beam embedded parts.

[0021] The first beam body embedded parts include first embedded round steel 5, embedded hook reinforcement 6, top embedded steel plate 7, first side embedded steel plate 8 and positioning steel pipe 9; the top embedded steel plate 7 is located on the top surface of the beam body, the top embedded steel plate 7 is located at the bottom of the first water retaining platform 3, the embedded hook reinforcement 6 is welded to the bottom of the top embedded steel plate 7, the embedded hook reinforcement 6 provides support for the top embedded steel plate 7, the first side embedded steel plate 8 is located in the beam seam, the first side embedded steel plate 8 is welded to the top embedded steel plate 7, the first embedded round steel 5 is welded to the first side embedded steel plate 8, and the first embedded round steel 5 is perpendicular to the first side embedded steel plate 8; the first embedded round steel 5 provides support for the first side embedded steel plate 8, the positioning steel pipe 9 is welded to the top of the top embedded steel plate 7, the positioning steel pipe 9 is buried in the first water retaining platform 3, the positioning steel pipe 9 is filled with concrete, and the ballast retaining steel cover plate 1 is welded to the positioning steel pipe 9.

[0022] The second beam body embedded parts include second embedded round steel 10 and second side embedded steel plate 11. The second side embedded steel plate 11 is located in the beam seam. The second embedded round steel 10 is welded to the second side embedded steel plate 11. The second embedded round steel 10 is perpendicular to the second side embedded steel plate 11. The second embedded round steel 10 provides support for the second side embedded steel plate 11.

[0023] A steel pad 12 is welded to the first side embedded steel plate 8 and the second side embedded steel plate 11. The steel pad 12 is provided with screw holes. The waterproof curtain 2 is clamped and fixed on the steel pad 12 by steel clamps 13. The lengths of the steel pad 12 and the steel clamps 13 are consistent with the length of the beam seam. The steel clamps 13 and the steel pad 12 are connected by bolts 14. Through holes corresponding to the bolts 14 are also punched at both ends of the waterproof curtain 2.

[0024] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A railway ballasted track bridge beam end telescopic device, characterized in that: It comprises a first beam body embedded part, a second beam body embedded part, a ballast retaining steel cover plate (1) and a waterproof curtain cloth (2), wherein the first beam body embedded part and the second beam body embedded part are arranged in the beam body at equal intervals on both sides of the beam seam according to the beam width; The fixed end of the ballast retaining steel cover plate (1) is located at the top of the first water retaining platform (3) on one side of the beam joint, the fixed end of the ballast retaining steel cover plate (1) is fixedly connected to the first beam body embedded part, the movable end of the ballast retaining steel cover plate (1) passes over the beam joint and is in movable contact with the top surface of the second water retaining platform (4), and a sliding space is reserved between the movable end of the ballast retaining steel cover plate (1) and the second water retaining platform (4); the length of the ballast retaining steel cover plate (1) is consistent with the length of the beam joint; The waterproof curtain (2) is arranged at the beam seam and is located below the ballast retaining steel cover plate (1). The length of the waterproof curtain (2) is consistent with the length of the beam seam. The middle of the waterproof curtain (2) is concave, and the two ends are respectively connected to the first beam body embedded part and the second beam body embedded part.

2. The railway ballasted track bridge beam end expansion and contraction device according to claim 1, characterized in that: The first beam body embedded parts include first embedded round steel (5), embedded hook reinforcement (6), top surface embedded steel plate (7), first side surface embedded steel plate (8) and positioning steel pipe (9); the top surface embedded steel plate (7) is located on the top surface of the beam body, the embedded hook reinforcement (6) is welded to the bottom of the top surface embedded steel plate (7), the first side surface embedded steel plate (8) is located in the beam seam, the first side surface embedded steel plate (8) is welded to the top surface embedded steel plate (7), the first embedded round steel (5) is welded to the first side surface embedded steel plate (8), the positioning steel pipe (9) is welded to the top of the top surface embedded steel plate (7), and the ballast retaining steel cover plate (1) is welded to the positioning steel pipe (9).

3. The railway ballasted track bridge beam end telescopic device according to claim 2, characterized in that: The second beam body embedded part comprises a second embedded round steel (10) and a second side embedded steel plate (11); the second side embedded steel plate (11) is located in the beam seam; the second embedded round steel (10) and the second side embedded steel plate (11) are welded together.

4. The railway ballasted track bridge beam end expansion and contraction device according to claim 3, characterized in that: A steel backing plate (12) is welded to the first side embedded steel plate (8) and the second side embedded steel plate (11), screw holes are opened on the steel backing plate (12), the waterproof curtain (2) is clamped and fixed on the steel backing plate (12) by a steel clamping plate (13), and the steel clamping plate (13) and the steel backing plate (12) are connected by bolts (14).

5. The railway ballasted track bridge beam end expansion and contraction device according to claim 3, characterized in that: The positioning steel pipe (9) is filled with concrete.

6. The railway ballasted track bridge beam end expansion and contraction device according to claim 2, characterized in that: The first embedded round steel (5) is perpendicular to the first side embedded steel plate (8).

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