Durable expansion joint structure for road bridge and culvert engineering
By using the deformation of the waterstop strip and the staggered arrangement of the filter screen in the modular expansion joint structure, the problems of aging and water retention of single-layer rubber pads are solved, achieving effective drainage of water and filtration of impurities, thus ensuring the durability and waterproofness of the bridge structure.
Patent Information
- Application Number
- CN202423224855.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-26
- Publication Date
- 2025-12-05
- Estimated Expiration
- 2034-12-26
AI Technical Summary
In existing technologies, single-layer rubber pads used as waterproof barriers are prone to aging and wear in road and bridge engineering, resulting in poor sealing, water penetration and water retention, which in turn accelerates bridge corrosion and damage.
The modular expansion joint structure includes side beams, middle beams, limiting holes, waterstops, moving devices, lifting devices, and filtering devices. Through the deformation of the waterstops and the staggered arrangement of the filter screens, effective water discharge and impurity filtration are achieved.
It effectively drains infiltrated water, prevents bridge corrosion, maintains structural stability, avoids impurities affecting water drainage, and extends service life.
Smart Images
Figure CN223633785U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of expansion joint technology, and in particular relates to a durable expansion joint structure for road and bridge engineering. Background Technology
[0002] Road and bridge engineering refers to the general term for bridges, culverts, and related ancillary facilities designed and constructed to cross natural obstacles (such as rivers and ditches) or man-made obstacles (such as railways and highways) in urban and rural road construction. These projects not only ensure the continuity and safety of traffic routes, but also play multiple roles such as regulating water flow, protecting the ecological environment, and enhancing the road landscape. They are an important part of modern transportation infrastructure construction. In road and bridge engineering, to ensure the stability of bridges under temperature changes and loads, expansion joints are usually installed to allow the structure to undergo necessary displacement.
[0003] In existing technologies, single-layer rubber pads are commonly used as waterproof barriers. However, this design is prone to aging, wear, or poor sealing after a period of use, which allows moisture to seep into the expansion joint. In addition, single-layer rubber pads often cannot effectively drain water when encountering heavy rainfall or bridge structural deformation, causing water to stagnate at the expansion joint and thus accelerating the corrosion and damage of the bridge structure.
[0004] Based on this, this utility model designs a durable expansion joint structure for road and bridge engineering to solve the above problems. Utility Model Content
[0005] The purpose of this utility model is to address the problem that the existing technology often uses a single-layer rubber pad as a waterproof barrier, which is prone to aging, wear, or poor sealing after a period of use, causing water to seep into the expansion joint. In addition, when encountering heavy rainfall or bridge structural deformation, the single-layer rubber pad often cannot effectively drain the accumulated water, causing water to remain at the expansion joint, thereby accelerating the corrosion and damage of the bridge structure. Therefore, this utility model proposes a durable expansion joint structure for road and bridge engineering.
[0006] To achieve the above objectives, the present invention adopts the following technical solution:
[0007] A durable expansion joint structure for road and bridge engineering includes a modular expansion joint body. Two side beams are symmetrically arranged on the modular expansion joint body. A middle beam is fixedly connected to the modular expansion joint body. Several limiting holes are formed within both the side beams and the middle beam. A first waterstop is installed in the two upper adjacent limiting holes, and a second waterstop is installed in the two lower adjacent limiting holes. Two moving devices are fixedly connected within the modular expansion joint body, and lifting devices are fixedly connected within each moving device. Two filtering devices are installed within the side beams and the middle beam.
[0008] As a further description of the above technical solutions:
[0009] The moving device comprises a connecting plate fixedly connected in the modulus expansion joint body, a telescopic rod fixedly connected on the connecting plate, a moving plate fixedly connected on the telescopic rod, and a back-pulling spring sleeved on the telescopic rod.
[0010] As a further description of the above technical solutions:
[0011] One end of the back-pulling spring is fixedly connected on the connecting plate, the other end of the back-pulling spring is fixedly connected under the moving plate, and the first water stop and the second water stop are both provided in a U shape.
[0012] As a further description of the above technical solutions:
[0013] The lifting device comprises a jacking rod and a moving rod, one side of the jacking rod is fixedly connected with an inclined plate, and the moving rod is fixedly connected in the modulus expansion joint body and is overlapped with the inclined plate.
[0014] As a further description of the above technical solutions:
[0015] The moving plate is provided with an installation groove, and the jacking rod is fixedly connected in the installation groove.
[0016] As a further description of the above technical solutions:
[0017] The filter device comprises two installation plates, one installation plate is installed on one side of the side beam steel, the other installation plate is installed on one side of the middle beam steel, a frame body is fixedly connected on the installation plate, and a filter screen is arranged in the frame body.
[0018] As a further description of the above technical solutions:
[0019] The two frame bodies are arranged in an interlaced manner.
[0020] As a further description of the above technical solutions:
[0021] The filter screen and the frame body adopt a quick-release structure convenient for replacement.
[0022] As described above, due to the adoption of the above technical solutions, the present application has the following beneficial effects:
[0023] 1. The utility model discloses a movable type road bridge and culvert engineering expansion joint structure, when the water is infiltrated, first drop on the second water stop, and when the modulus formula expansion joint body drives the moving rod synchronous movement in the expansion process, the moving rod is far away from the inclined plate, the pull spring exerts the elastic force to the moving plate at this moment, and the elastic force drives the moving plate and the top rod to move, and then the top rod lifts the middle part of the second water stop, at this moment, the second water stop deforms, and the water in the second water stop is discharged through the U-shaped second water stop, thereby realizing the infiltration water receiving and smooth discharge.
[0024] 2. The utility model discloses a movable type road bridge and culvert engineering expansion joint structure, when the water is infiltrated, first drop on the second water stop, and when the modulus formula expansion joint body drives the moving rod synchronous movement in the expansion process, the moving rod is far away from the inclined plate, the pull spring exerts the elastic force to the moving plate at this moment, and the elastic force drives the moving plate and the top rod to move, and then the top rod lifts the middle part of the second water stop, at this moment, the second water stop deforms, and the water in the second water stop is discharged through the U-shaped second water stop, thereby realizing the infiltration water receiving and smooth discharge. DRAWINGS
[0025] Figure 1 A durable type road bridge and culvert engineering expansion joint structure three-dimensional structure schematic diagram is provided for the utility model;
[0026] Figure 2 A durable type road bridge and culvert engineering expansion joint structure modulus formula expansion joint body three-dimensional structure schematic diagram is provided for the utility model;
[0027] Figure 3 A durable type road bridge and culvert engineering expansion joint structure is provided for the utility model; Figure 2 The structure schematic diagram of A part amplification in the utility model;
[0028] Figure 4 A durable type road bridge and culvert engineering expansion joint structure is provided for the utility model; Figure 2 The structure schematic diagram of B part amplification in the utility model;
[0029] Legend:
[0030] 1, modulus formula expansion joint body;2, side beam steel;3, middle beam steel;4, limit hole;5, first water stop;6, moving device;61, connecting plate;62, expansion rod;63, moving plate;64, pull spring;7, lifting device;71, top rod;72, inclined plate;73, moving rod;8, filter device;81, mounting plate;82, frame;83, filter screen;9, second water stop. DETAILED DESCRIPTION
[0031] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than 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 scope of the utility model.
[0032] Please refer to Figures 1-4 ,
[0033] First embodiment:
[0034] The utility model provides a kind of technical scheme: a durable road bridge culvert engineering expansion joint structure, including modulus expansion joint body 1, two edge beam steels 2 are symmetrically provided on modulus expansion joint body 1, middle beam steel 3 is fixedly connected on modulus expansion joint body 1, a plurality of limiting holes 4 are all set in edge beam steel 2 and middle beam steel 3, first water stop 5 is installed in the upper adjacent two limiting holes 4, second water stop 9 is installed in the lower adjacent two limiting holes 4, two moving devices 6 are fixedly connected in modulus expansion joint body 1, lifting device 7 is fixedly connected in moving device 6, two filter devices 8 are installed in edge beam steel 2 and middle beam steel 3.
[0035] Specifically, as shown in Figures 1-3 Moving device 6 includes connecting plate 61, connecting plate 61 is fixedly connected in modulus expansion joint body 1, expansion joint 62 is fixedly connected on connecting plate 61, moving plate 63 is fixedly connected on expansion joint 62, expansion joint 62 is provided with pull spring 64 outside, by setting pull spring 64 and expansion joint 62, the combination of expansion joint 62 and pull spring 64 provides the effective adjustment and automatic return function of expansion joint;One end of pull spring 64 is fixedly connected on connecting plate 61, the other end of pull spring 64 is fixedly connected under moving plate 63, the shape of first water stop 5 and second water stop 9 is all set as U type, lifting device 7 includes jacking rod 71 and moving rod 73, one side of jacking rod 71 is fixedly connected with inclined plate 72, moving rod 73 is fixedly connected in modulus expansion joint body 1, and is overlapped with inclined plate 72, by setting inclined plate 72 and moving rod 73, when modulus expansion joint body 1 is in the process of resetting, moving rod 73 gradually exerts thrust on inclined plate 72, so that inclined plate 72 resets, to reset jacking rod 71, avoid the problem that continuous extrusion to second water stop 9 can cause damage;Mounting groove is formed in moving plate 63, and jacking rod 71 is fixedly connected in the mounting groove.
[0036] When water seeps through the first waterstop 5, it first drips on the second waterstop 9 during operation, and when the modulus expansion joint body 1 moves the moving rod 73 synchronously during expansion, the moving rod 73 moves away from the inclined plate 72, the return spring 64 exerts elastic force on the moving plate 63, the elastic force moves the moving plate 63 and the top rod 71, then the top rod 71 lifts the middle part of the second waterstop 9, the second waterstop 9 deforms, and the water in the second waterstop 9 is discharged through the U-shaped second waterstop 9, thereby realizing receiving and smoothly discharging the seeped water.
[0037] Second embodiment:
[0038] Specifically, as shown in Figure 4 The filter device 8 includes two mounting plates 81, one mounting plate 81 is mounted on one side of the side beam steel 2, and the other mounting plate 81 is mounted on one side of the middle beam steel 3, the mounting plate 81 is fixedly connected with a frame body 82, the frame body 82 is provided with a filter screen 83, the two frame bodies 82 are arranged in an interlaced manner, the interlaced arrangement of the two filter screens 83 will not miss during expansion of the modulus expansion joint body 1, and the filter screen 83 and the frame body 82 adopt a quick release structure convenient for replacement.
[0039] During operation, the water seeps and first drips on the filter screen 83, the filter screen 83 can filter impurities in the water at this time, and the interlaced arrangement of the two filter screens 83 will not miss during expansion of the modulus expansion joint body 1, thereby completing the filtration of the seeped water and avoiding the influence of impurities on water discharge.
[0040] The above is only a preferred specific embodiment of the present application, but the protection scope of the present application is not limited to this, any skilled person in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.
Claims
1. A durable expansion joint structure for road and bridge engineering, comprising a modular expansion joint body (1), characterized in that, Two edge beam steels (2) are symmetrically arranged on the module expansion joint body (1), a middle beam steel (3) is fixedly connected on the module expansion joint body (1), a plurality of limiting holes (4) are formed in the edge beam steel (2) and the middle beam steel (3), a first water stop (5) is installed in the upper adjacent two limiting holes (4), a second water stop (9) is installed in the lower adjacent two limiting holes (4), two moving devices (6) are fixedly connected in the module expansion joint body (1), a lifting device (7) is fixedly connected in the moving device (6), and two filtering devices (8) are installed in the edge beam steel (2) and the middle beam steel (3).
2. A durable expansion joint structure for road and bridge engineering according to claim 1, characterized in that, The moving device (6) comprises a connecting plate (61) fixedly connected in the module expansion joint body (1), a telescopic rod (62) fixedly connected on the connecting plate (61), and a moving plate (63) fixedly connected on the telescopic rod (62).
3. A durable expansion joint structure for road and bridge engineering according to claim 2, characterized in that, One end of the telescopic rod (62) is fixedly connected on the connecting plate (61), and the other end of the telescopic rod (62) is fixedly connected on the moving plate (63).
4. A durable expansion joint structure for road and bridge engineering according to claim 3, characterized in that, The lifting device (7) comprises a top rod (71) and a moving rod (73), one side of the top rod (71) is fixedly connected with an inclined plate (72), the moving rod (73) is fixedly connected in the module expansion joint body (1) and is overlapped with the inclined plate (72).
5. A durable expansion joint structure for road and bridge engineering according to claim 4, characterized in that, The moving plate (63) is provided with an installation groove, and the top rod (71) is fixedly connected in the installation groove.
6. A durable expansion joint structure for road and bridge engineering according to claim 5, characterized in that, The filtering device (8) comprises two installation plates (81), one installation plate (81) is installed on one side of the edge beam steel (2), the other installation plate (81) is installed on one side of the middle beam steel (3), a frame body (82) is fixedly connected on the installation plate (81), and a filter screen (83) is arranged in the frame body (82).
7. A durable expansion joint structure for road and bridge engineering according to claim 6, characterized in that, The two frame bodies (82) are arranged in an interlaced manner.
8. A durable expansion joint structure for road and bridge engineering according to claim 7, characterized in that, The filter screen (83) and the frame body (82) adopt a quick release structure convenient to replace.