Concrete filling anti-cracking structure for expansion joint
By installing toothed plates, pre-embedded steel bars, and multi-layered Z-shaped steel and steel mesh at the bridge expansion joints, the problem of easy cracking of bridge expansion joints was solved, and the stability and safety of the structure were improved.
Patent Information
- Application Number
- CN202422404433.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-30
- Publication Date
- 2025-12-23
- Estimated Expiration
- 2034-09-30
AI Technical Summary
Existing bridge expansion joints are prone to cracking after prolonged use, leading to structural damage and affecting traffic safety.
By using toothed plates and pre-embedded steel bars along the length of the expansion joint, combined with multi-layer Z-shaped steel and steel mesh, the overall integrity and crack resistance of the concrete are enhanced through the connection and fixation of the Z-shaped steel and steel mesh.
It effectively reduces the risk of cracks in the concrete filling of expansion joints, improves driving safety, simplifies the construction process, reduces costs, and improves work efficiency.
Smart Images
Figure CN223706248U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to the expansion joint construction technical field, concretely relates to a kind of expansion joint filling concrete anti-cracking structure. BACKGROUND
[0002] Bridge expansion joint is used to adjust the displacement and connection between superstructure caused by vehicle load and bridge building materials. In existing construction technology, expansion joint will produce cracks after long time use, which will lead to the destruction of expansion joint over time. Once the position of bridge expansion joint is destroyed, it will seriously affect the speed, comfort and safety of driving, and may cause driving safety accidents in serious cases. Therefore, there is an urgent need for an expansion joint filling concrete anti-cracking structure to prevent cracks in the later stage of expansion joint and prevent the destruction of expansion joint to improve driving safety. SUMMARY
[0003] The utility model aims to provide an expansion joint filling concrete anti-cracking structure, which is designed for anti-cracking structure of bridge expansion joint filling concrete. It reduces the possibility of cracks in the later stage of expansion joint filling concrete and improves driving safety.
[0004] To achieve the above purpose, the utility model provides an expansion joint filling concrete anti-cracking structure, which comprises a tooth plate arranged horizontally along the length direction of expansion joint from front to back. A plurality of embedded steel bars are arranged equidistantly on both sides of the tooth plate. The embedded steel bars are arranged perpendicularly to the tooth plate. A plurality of Z-shaped steels are arranged on the upper part of the embedded steel bars. The Z-shaped steels are fixedly connected with the embedded steel bars. Steel mesh sheets are arranged on the Z-shaped steels.
[0005] Further, the Z-shaped steel comprises a vertically arranged connecting rod. A first horizontal rod is arranged vertically on the upper end of the connecting rod. A second horizontal rod is arranged vertically on the lower end of the connecting rod. The first horizontal rod and the second horizontal rod are fixedly connected with the connecting rod. The first horizontal rod and the second horizontal rod have the same length. A connecting groove is arranged horizontally on the top of the first horizontal rod. A connecting block is arranged horizontally on the bottom of the second horizontal rod. The connecting block is matched with the connecting groove. An arc-shaped placing groove is arranged on the bottom of the connecting block.
[0006] Further, the aperture of the steel mesh sheet is 10mm.
[0007] Further, a threaded hole is arranged vertically on the first horizontal rod and the second horizontal rod. The threaded hole of the first horizontal rod is matched with the threaded hole of the second horizontal rod. A short screw and a long screw are arranged on the threaded hole. The short screw and the long screw are matched with the threaded hole. A pressing strip is arranged on the upper part of the threaded hole. The pressing strip is provided with a through hole. The diameter of the through hole is the same as the diameter of the threaded hole.
[0008] Further, the Z-shaped steel is sequentially provided with three layers from top to bottom, and the Z-shaped steels are connected with each other in sliding mode.
[0009] Further, the reinforcing mesh is sequentially provided with four layers from top to bottom, and the reinforcing mesh is located between the Z-shaped steel and the pressing strip.
[0010] The expansion joint filling concrete anti-cracking structure can effectively reduce the risk of cracks of the expansion joint filling concrete, prevent damage at the expansion joint position, greatly improve the safety of driving, and has the advantages of simple and reasonable structure, easy factory batch production and construction site worker assembly, low cost and high work efficiency.
[0011] The utility model will be described in detail below in combination with the drawings and examples. DRAWINGS
[0012] Figure 1 It is the top view schematic diagram of the utility model.
[0013] Figure 2 It is the enlarged schematic diagram of A.
[0014] Figure 3 It is the structure schematic diagram of the utility model.
[0015] Figure 4 It is the Z-shaped steel structure schematic diagram.
[0016] Figure 5 It is the rear view of Z-shaped steel.
[0017] The reference signs are explained as follows: 1, toothed plate; 2, embedded steel bar; 3, Z-shaped steel; 31, first horizontal rod; 311, connecting groove; 32, second horizontal rod; 321, connecting block; 322, placing groove; 33, connecting rod; 34, threaded hole; 4, reinforcing mesh; 5, pressing strip; 51, through hole; 6, short screw; 7, long screw. DETAILED DESCRIPTION
[0018] In order to further explain the technical means and effects taken by the utility model to achieve the predetermined purpose, the specific implementation, structural features and effects of the utility model will be described in detail as follows in combination with the drawings and examples.
[0019] The technical solutions in the utility model embodiments will be described clearly and completely below in combination with the drawings of the utility model embodiments. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.
[0020] In the description of the utility model, need understanding is, the term "center", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "alignment", "overlap", "bottom", "inner", "outer" and so on indicate the orientation or positional relation based on the orientation or positional relation shown in the drawing, only for the convenience of describing the utility model and simplifying the description, and not indicate or imply that the indicated device or element must have a particular orientation, construct and operate in a particular orientation, therefore cannot be understood as a limitation on the utility model.
[0021] The terms "first", "second", are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features; in the description of the utility model, unless otherwise specified, the meaning of "multiple" is two or more.
[0022] Embodiment 1
[0023] The embodiment provides a kind of expansion joint filling concrete anti-cracking structure as Figures 1-5 It is characterized in that: the tooth plate 1 both sides are equally spaced with several embedded steel bars 2, embedded steel bar 2 is arranged perpendicularly to tooth plate 1, the upper portion of embedded steel bar 2 is provided with multiple Z-shaped steel 3, Z-shaped steel 3 is fixedly connected with embedded steel bar 2, and steel mesh 4 is arranged on Z-shaped steel 3. Z-shaped steel 3 is sequentially provided with three layers from top to bottom, and Z-shaped steel 3 is slidably connected with each other. Steel mesh 4 is sequentially provided with four layers from top to bottom, and steel mesh 4 is located between Z-shaped steel 3 and pressing strip 5. The four layers of steel mesh 4 arranged from top to bottom, the first layer of steel mesh 4 is arranged at 10mm below the surface of concrete, to prevent the generation of shrinkage cracks in the strength growth stage of concrete. The transverse crack resistance of concrete can be improved by the arranged steel mesh 4, and the integrity of the upper and lower parts of concrete can be strengthened by the sequentially arranged Z-shaped steel 3.
[0024] Further, as Figure 4 And 5As shown in the figure, the Z-shaped steel 3 comprises a vertically arranged connecting rod 33, the upper end of the connecting rod 33 is vertically provided with a first horizontal rod 31, the lower end of the connecting rod 33 is vertically provided with a second horizontal rod 32, the first horizontal rod 31 and the second horizontal rod 32 are fixedly connected with the connecting rod 33, the first horizontal rod 31 and the second horizontal rod 32 are of the same length, the top of the first horizontal rod 31 is horizontally provided with a connecting groove 311, the bottom of the second horizontal rod 32 is horizontally provided with a connecting block 321, the connecting block 321 is matched with the connecting groove 311, and the bottom of the connecting block 321 is provided with an arc-shaped placing groove 322. The Z-shaped steel 3 can be mass-produced in a factory, the cost is reduced, the upper and lower parts can be directly connected through the connecting groove 311 in the construction process, the working efficiency is greatly improved, and the construction mode is simplified. The arc-shaped placing groove 322 arranged at the bottom of the Z-shaped steel 3 can improve the contact area with the embedded steel bar 2, facilitate welding and improve stability.
[0025] Further, as Figure 1 And Figure 4 As shown in the figure, the diameter of the steel mesh 4 is 10 mm. The first horizontal rod 31 and the second horizontal rod 32 are vertically provided with a threaded hole 34 penetrating through, the threaded hole 34 of the first horizontal rod 31 is matched with the threaded hole 34 of the second horizontal rod 32, when the Z-shaped steel is connected with each other from top to bottom, the threaded hole 34 of the first horizontal rod 31 and the threaded hole 34 of the second horizontal rod 32 are coaxial and of the same size, short screws 6 and long screws 7 are arranged on the threaded hole 34, the short screws 6 and the long screws 7 are matched with the threaded hole 34, a pressing strip 5 is arranged on the upper portion of the threaded hole 34, the pressing strip 5 is provided with a through hole 51, and the diameter of the through hole 51 is the same as that of the threaded hole 34. The steel mesh 4 is placed on the threaded hole 34 through the Z-shaped steel 3, and then the pressing strip 5 is placed, and the structure is effectively improved in overall stability through screw locking.
[0026] In the construction process, the Z-shaped steel 3 is sequentially arranged from top to bottom as the first layer to the third layer, and the steel mesh 4 is sequentially arranged from top to bottom as the first layer to the fourth layer. First, the arc-shaped placing groove 322 of the third layer Z-shaped steel 3 is contacted with the embedded steel bar 2, and welding is performed. After firm welding, the fourth layer steel mesh 4 is placed, the steel mesh 4 is passed through the connecting rod 33, is placed on the threaded hole 34 of the second horizontal rod 32, the pressing strip 5 is placed on the steel mesh 4, and fastening is performed through the screw. Subsequently, the second horizontal rod 32 of the second layer Z-shaped steel 3 is connected with the first horizontal rod 31 of the third layer through the connecting groove 311, the third layer steel mesh 4 is passed through the connecting rod 33 of the second layer Z-shaped steel 3, is placed on the second horizontal rod 32 of the second layer Z-shaped steel 3, the pressing strip 5 is placed on the third layer steel mesh 4, and the long screw 7 is sequentially passed through the pressing strip 5, the steel mesh 4, the first horizontal rod 31, and the threaded hole 34 of the second horizontal rod 32 to be fixed.
[0027] Then, the second cross bar 32 of the first layer of Z-shaped steel 3 is connected with the first cross bar 31 of the second layer of Z-shaped steel 3 through the connecting groove 311, the second layer of steel mesh 4 is placed on the second cross bar 32 of the first layer of Z-shaped steel 3 through the connecting bar 33 of the first layer of Z-shaped steel 3, the pressing strip 5 is placed on the steel mesh 4, the long screw 7 is sequentially fixed through the pressing strip 5, the steel mesh 4, the first cross bar 31 and the threaded hole 34 of the second cross bar 32. Finally, the first layer of steel mesh 4 is placed on the first cross bar 31 of the first layer of Z-shaped steel 3, the pressing strip 5 is placed on the steel mesh 4, the short screw 6 is used to fix through the pressing strip 5, the steel mesh 4 and the threaded hole 34, and the overall assembly is completed.
[0028] The above is a further detailed description of the utility model in combination with specific preferred embodiments, and the specific implementation of the utility model cannot be limited to these descriptions. For ordinary skilled persons in the technical field to which the utility model belongs, without departing from the concept of the utility model, a number of simple deductions or substitutions can be made, and all of them should be regarded as belonging to the protection scope of the utility model.
Claims
1. A construction for preventing cracks in expansion joint filling concrete, comprising toothed plates (1) arranged horizontally from front to back along the length of the expansion joint, characterized in that: The toothed plate (1) is provided with a plurality of embedded steel bars (2) at equal intervals on both sides, the embedded steel bars (2) are arranged vertically to the toothed plate (1), the upper part of the embedded steel bars (2) is provided with a plurality of Z-shaped steels (3), the Z-shaped steels (3) are fixedly connected with the embedded steel bars (2), and the Z-shaped steels (3) are all provided with steel mesh sheets (4).
2. A construction for preventing cracks in expansion joint filling concrete as set forth in claim 1, characterized in that: The Z-shaped steel (3) comprises a vertically arranged connecting rod (33), the upper end of the connecting rod (33) is vertically provided with a first horizontal rod (31), the lower end of the connecting rod (33) is vertically provided with a second horizontal rod (32), the first horizontal rod (31), the second horizontal rod (32) and the connecting rod (33) are all fixedly connected, the first horizontal rod (31) and the second horizontal rod (32) are of the same length, the top of the first horizontal rod (31) is horizontally provided with a connecting groove (311), the bottom of the second horizontal rod (32) is horizontally provided with a connecting block (321), the connecting block (321) is matched with the connecting groove (311), and the bottom of the connecting block (321) is provided with an arc-shaped placing groove (322).
3. A construction for preventing cracks in a joint filler concrete as set forth in claim 1, wherein: The steel mesh sheet (4) has a hole diameter of 10 mm.
4. A construction for preventing cracks in expansion joint filling concrete as set forth in claim 2, wherein: The first horizontal rod (31) and the second horizontal rod (32) are both provided with a threaded hole (34) penetrating in the vertical direction, the threaded hole (34) of the first horizontal rod (31) is matched with the threaded hole (34) of the second horizontal rod (32), short screws (6) and long screws (7) are arranged on the threaded hole (34), the short screws (6) and the long screws (7) are both matched with the threaded hole (34), the upper part of the threaded hole (34) is provided with a pressing strip (5), the pressing strip (5) is provided with a through hole (51), and the diameter of the through hole (51) is the same as that of the threaded hole (34).
5. The anti-cracking structure for expansion joint filling concrete according to claim 1 or 2, wherein: The Z-shaped steels (3) are sequentially provided with three layers from top to bottom, and the Z-shaped steels (3) are connected with each other in a sliding mode.
6. A construction for preventing cracks in expansion joint filling concrete as set forth in claim 4, wherein: The steel mesh sheets (4) are sequentially provided with four layers from top to bottom, and the steel mesh sheets (4) are located between the Z-shaped steels (3) and the pressing strips (5).