Bridge expansion joint structure

Abstract

The utility model discloses a bridge expansion joint structure which comprises two beam bodies, an expansion joint is formed by a gap between the two beam bodies, a pre-open groove is formed in one side of each beam body, profile steel is arranged in each pre-open groove, a first fixing steel bar is fixed to each pre-open groove, and a second fixing steel bar is fixed to one side of each profile steel. A groove is formed in each section steel, a fixing rod is fixed to each groove, a connecting plate located in the corresponding groove is arranged between the two sections of section steel, a sliding groove is formed in the connecting plate, and the fixing rods correspondingly penetrate through the sliding grooves; a connecting piece is movably connected between the two pieces of profile steel, one side of each piece of profile steel is connected with an embedded plate, a sliding rod is installed at one end of each embedded plate, an inserting hole corresponding to the sliding rod is formed in the connecting piece, and a spring is arranged on the inner side of the inserting hole. A part of force generated by expansion and contraction or deformation of the bridge can be offset through the elastic expansion and contraction adjusting effect, so that damage to the expansion joint caused by expansion and contraction or deformation is reduced, and the structural stability is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of bridge engineering, in particular to a bridge expansion joint structure. Background Art

[0002] Bridge expansion joints refer to expansion joints that are usually set between the two beam ends, between the beam ends and the abutments, or at the hinged position of the bridge to meet the requirements of bridge deck deformation. The expansion joints are required to be able to freely expand and contract in both directions parallel and perpendicular to the bridge axis, be firm and reliable, and be smooth without sudden jumps and noise when vehicles pass through; they must be able to prevent rainwater and garbage and soil from infiltrating and blocking; and they must be easy and convenient to install, inspect, maintain, and remove dirt. At the expansion joints, the railings and the bridge deck pavement must be disconnected.

[0003] Most of the tooth plates of existing bridge expansion joints are integral structures, with a gap between the two tooth plates required for the movement space when the bridge expands and contracts or deforms due to thermal expansion or deformation. However, when thermal expansion or contraction or deformation occurs, the two tooth plates are rigidly connected and lack a buffer structure, which can easily cause certain damage to the stability of the expansion joint, thereby affecting the use effect of the expansion joint. Utility Model Content

[0004] In order to solve the above technical problems, the purpose of the utility model is to provide a bridge expansion joint structure, which can offset a part of the force generated by thermal expansion and contraction or deformation of the bridge through elastic expansion and contraction adjustment, thereby reducing the damage to the expansion joint caused by thermal expansion and contraction or deformation and improving the structural stability.

[0005] In order to achieve the above technical objectives and the above technical effects, the present invention is implemented through the following technical solutions:

[0006] A bridge expansion joint structure comprises two beams, wherein the gap between the two beams forms an expansion joint, a pre-groove is provided on one side of each beam, a steel section is provided in each pre-groove, a fixed steel bar one is fixed on the pre-groove, and a fixed steel bar two is fixed on one side of each steel section; a groove is provided on each steel section, a fixing rod is fixed on the groove, a connecting plate located in the groove is provided between the two steel sections, a sliding groove is provided on the connecting plate, and the fixing rod passes through the sliding groove accordingly; a connecting piece is movably connected between the two steel sections, an embedded plate is connected to one side of each steel section close to the connecting piece, a sliding rod is installed on one end of the embedded plate, a socket corresponding to the sliding rod is provided on the connecting piece, and a spring capable of acting on the sliding rod is provided on the inner side of the socket.

[0007] Furthermore, the fixed steel bar 1 and the fixed steel bar 2 are both U-shaped structures, and the fixed steel bar 1 and the fixed steel bar 2 are arranged in an interlaced manner.

[0008] Furthermore, the fixing rod is slidably connected to the sliding groove, and two sliding grooves are provided on a single connecting plate. The two sliding grooves of the single connecting plate are correspondingly slidably connected to the two fixing rods.

[0009] Furthermore, both sides of the upper end of the connecting piece are provided with a row of comb teeth, and the insertion hole is formed between two adjacent comb teeth.

[0010] Furthermore, a rotating shaft is connected to one side of the steel section, and the embedded plate is connected to the rotating shaft.

[0011] Furthermore, the embedded plate is in a V-shaped structure, the embedded plate and the connecting piece are meshed with each other, one end of the spring is fixed to one end of the sliding rod, and the sliding rod is slidably connected to the socket.

[0012] Furthermore, a placement groove is provided on the beam body at the expansion joint, and a drainage trough plate fixed by the placement groove is provided at the expansion joint.

[0013] The beneficial effects of the utility model are:

[0014] The utility model discloses a bridge expansion joint structure in which two steel sections are movably connected with a connecting piece, and a spring is provided so that a sliding rod connected to an embedded plate can be elastically slidably adjusted in a socket of the connecting piece, so that the embedded plate connected to the steel section and the connecting piece can be elastically telescopically adjusted, so that a certain elasticity can exist between the two steel sections, and when the bridge undergoes thermal expansion, contraction or deformation, a part of the force can be offset, thereby reducing damage to the expansion joint. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional structural schematic diagram of the bridge expansion joint structure of the utility model.

[0016] Figure 2 It is a cross-sectional three-dimensional structural schematic diagram of the bridge expansion joint structure of the present utility model.

[0017] Figure 3 for Figure 1 Schematic diagram of the enlarged structure at point A in the middle.

[0018] In the figure, 1. beam body; 2. pre-grooving; 3. fixing steel bar 1; 4. steel section; 5. fixing steel bar 2; 6. groove; 7. fixing rod; 8. connecting plate; 9. slide groove; 10. connecting piece; 11. rotating shaft; 12. embedded plate; 13. sliding rod; 14. socket; 15. spring; 16. placement groove; 17. drainage trough plate. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application; obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments in the present application without making creative work are within the scope of protection of the present application.

[0020] In the description of the present application, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present application. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0021] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "set / connected", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0022] like Figures 1 to 3 A preferred embodiment of a bridge expansion joint structure shown in the figure comprises two beam bodies 1, wherein the gap between the two beam bodies 1 forms an expansion joint, a pre-groove 2 is provided on one side of each beam body 1, a steel section 4 is provided in each pre-groove 2, a row of fixed steel bars 3 is fixed on the pre-groove 2, and a row of fixed steel bars 5 is fixed on one side of each steel section 4; a groove 6 is provided on each steel section 4, a fixing rod 7 is fixed on the groove 6, a connecting plate 8 located in the groove 6 is provided between the two steel sections 4, a slide groove 9 is provided on the connecting plate 8, and the fixing rod 7 passes through the slide groove 9 accordingly; a connecting piece 10 is movably connected between the two steel sections 4, a rotating shaft 11 is provided on one side of each steel section 4 close to the connecting piece 10, an embedded plate 12 is connected to the rotating shaft 11, a sliding rod 13 is rotatably installed on one end of the embedded plate 12, a socket 14 corresponding to the sliding rod 13 is provided on the outer side of the connecting piece 10, and a spring 15 capable of acting on the sliding rod 13 is provided on the inner side of the socket 14.

[0023] In this embodiment, the spring 15 is provided so that the sliding rod 13 can be elastically slidably adjusted in the insertion hole 14, so that the embedded plate 12 and the connecting member 10 can be elastically telescopically adjusted, so that there can be a certain elasticity between the two steel sections 4. When the bridge expands or contracts or deforms due to heat, part of the force can be offset, thereby reducing the damage to the expansion joint.

[0024] The fixed steel bar 1 3 and the fixed steel bar 2 5 are both U-shaped structures, and the fixed steel bar 1 3 and the fixed steel bar 2 5 are arranged in a staggered manner. By staggering the fixed steel bar 1 3 and the fixed steel bar 2 5, the steel section 4 can be better fixed in the pre-groove 2 when the expansion joint structure is cast.

[0025] The fixing rod 7 is slidably connected to the slide groove 9; in this embodiment, the number of the connecting plates 8 is multiple, and two slide grooves 9 are provided on a single connecting plate 8, and the two slide grooves 9 of a single connecting plate 8 are slidably connected to the two fixing rods 7. By setting the connecting plate 8, the connecting plate 8 can ensure that the two steel sections 4 can be freely expanded and contracted in two directions parallel and perpendicular to the bridge axis, and can also ensure that there is no large expansion and contraction between the two steel sections 4, thereby ensuring the stability of the expansion joint.

[0026] The upper end of the connector 10 has a row of comb teeth on both sides, and the insertion hole 14 is formed between two adjacent comb teeth. The embedded plate 12 is in a V-shaped structure, and the embedded plate 12 and the connector 10 are meshed with each other. One end of the spring 15 is fixed to one end of the sliding rod 13, and the sliding rod 13 is slidably connected with the insertion hole 14. The spring 15 is provided so that the sliding rod 13 can be elastically slidably adjusted in the insertion hole 14, so that the elastic force of the spring 15 can be applied between the embedded plate 12 and the connector 10. When the bridge expands or contracts or deforms due to heat, part of the force can be offset, thereby reducing the damage to the expansion joint.

[0027] In this embodiment, the lower portion of the connecting member 10 is an I-shaped structure, which matches with the groove 6 and the protruding portion of the steel section 4 .

[0028] A placement groove 16 is provided at the expansion joint of the beam body 1 , and a drainage trough plate 17 fixed by the placement groove 16 is provided at the expansion joint.

[0029] The working principle and use process of the utility model are as follows: by opening a pre-groove 2 at the end of the beam body 1, placing the steel section 4 in the pre-groove 2, and by pouring concrete on the fixed steel bar 1 3 and the fixed steel bar 2 5, the steel section 4 is fixed in the pre-groove 2, and by setting the spring 15, the sliding rod 13 can be elastically slid and adjusted in the insertion hole 14, so that the embedded plate 12 and the connecting piece 10 can be elastically adjusted to have a certain elasticity between the two steel sections 4, when the bridge expands or contracts or deforms, it can offset part of the force, thereby reducing the damage to the expansion joint; by setting the connecting plate 8, the connecting plate 8 can ensure that the two steel sections 4 can freely expand and contract in two directions parallel and perpendicular to the axis of the bridge, and can also ensure that there will be no large expansion and contraction between the two steel sections 4, thereby ensuring the stability of the expansion joint. The drainage trough plate 17 is set to drain the expansion joint.

[0030] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0031] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A bridge expansion joint structure, comprising two beams, wherein the gap between the two beams forms an expansion joint, and is characterized in that: A pre-groove is provided on one side of each beam body, and a steel section is provided in each pre-groove, a fixed steel bar 1 is fixed on the pre-groove, and a fixed steel bar 2 is fixed on one side of each steel section; a groove is provided on each steel section, and a fixing rod is fixed on the groove, a connecting plate located in the groove is provided between the two steel sections, a sliding groove is provided on the connecting plate, and the fixing rod passes through the sliding groove accordingly; a connecting piece is movably connected between the two steel sections, an embedded plate is connected to one side of each steel section close to the connecting piece, a sliding rod is installed at one end of the embedded plate, a socket corresponding to the sliding rod is provided on the connecting piece, and a spring that can act on the sliding rod is provided on the inner side of the socket.

2. A bridge expansion joint structure according to claim 1, characterized in that: The fixed steel bars 1 and 2 are both U-shaped structures, and the fixed steel bars 1 and 2 are staggered with each other.

3. A bridge expansion joint structure according to claim 1, characterized in that: The fixing rod is slidably connected to the sliding groove, and two sliding grooves are arranged on a single connecting plate. The two sliding grooves of the single connecting plate are correspondingly slidably connected to the two fixing rods.

4. A bridge expansion joint structure according to claim 1, characterized in that: A row of comb teeth are provided on both sides of the upper end of the connecting piece, and the insertion hole is formed between two adjacent comb teeth.

5. The bridge expansion joint structure according to claim 1, characterized in that: A rotating shaft is connected to one side of the steel section, and the embedded plate is connected to the rotating shaft.

6. The bridge expansion joint structure according to claim 1, characterized in that: The embedded plate is in a V-shaped structure, the embedded plate and the connecting piece are meshed with each other, one end of the spring is fixed on one end of the sliding rod, and the sliding rod is slidably connected with the jack.

7. The bridge expansion joint structure according to claim 1, characterized in that: The beam body is provided with a placement groove at the expansion joint, and the expansion joint is provided with a drainage trough plate fixed by the placement groove.

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