Highway expansion joint structure
By using a combination of F-shaped side beams, rubber sealing strips, and sealing strips in highway expansion joints, multiple sealing lines are formed, solving the problem of rainwater and impurity intrusion, improving the stability and durability of the sealing structure, and ensuring the long-term effective operation of the expansion joints.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- XINJIANG ONEZAWA CONSTRUCTION CO LTD
- Filing Date
- 2025-05-26
- Publication Date
- 2026-05-12
AI Technical Summary
Existing highway expansion joint structures are prone to sealing failure due to rainwater and debris intrusion when exposed to the natural environment for a long time, affecting stability and durability.
The design employs a combination of F-shaped side beams, rubber sealing strips, rubber sealing tapes, mounting pressure strips, sealing strips, and rubber buffer pads to form multiple lines of sealing defense. Combined with connecting angle steel and anchoring systems, this ensures sealing performance and structural stability.
It effectively prevents rainwater, dust, and large particles from entering, keeps the inside of the expansion joint dry, improves the stability and durability of the sealing structure, prevents corrosion of metal parts, and extends service life.
Smart Images
Figure CN224227592U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of highway expansion joint technology, and in particular relates to a highway expansion joint structure. Background Technology
[0002] Butt-type highway expansion joints typically consist of steel side beams, sealing rubber strips, and anchoring systems. The side beams are fixed to the bridge or roadbed by pre-embedded steel bars to form a rigid frame, while the rubber strips in the middle are embedded in the grooves of the side beams, using the elasticity of the rubber to absorb the expansion and contraction displacement of the road surface.
[0003] Highway expansion joints are exposed to the natural environment for extended periods, enduring wind, rain, sun, and vehicle traffic. Temperature and load variations cause the expansion joints to expand and contract. During repeated expansion and contraction, rainwater and snowmelt can easily seep into the gaps, leading to rust and corrosion of the internal metal components. Therefore, we need to design a highway expansion joint structure that can block rainwater and debris, fill gaps to prevent intrusion, block large particles, keep the interior of the expansion joint clean and dry, and use rubber buffer pads to absorb the impact of vehicle loads, thereby improving the stability and durability of the sealing structure. Utility Model Content
[0004] The purpose of this utility model is to provide a highway expansion joint structure that has the advantages of blocking rainwater and debris, filling the joint to prevent intrusion, blocking large particles, keeping the interior of the expansion joint clean and dry, and using a rubber buffer pad to absorb the impact of vehicle loads, thereby improving the stability and durability of the sealing structure and solving the aforementioned technical problems.
[0005] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: A highway expansion joint structure includes a gap at the center axis of the highway, two symmetrical F-shaped side beams are arranged in the inner cavity of the gap, a rubber sealing strip is installed on the facing side of the two F-shaped side beams, a rubber sealing strip is installed at the gap at the top of the two F-shaped side beams, the front and rear sides of the rubber sealing strip are in contact with the front and rear sides of the two F-shaped side beams, the rubber sealing strip is located at the top of the rubber sealing strip, the left and right sides of the top of the rubber sealing strip are in contact with the mounting strip, rubber buffer pads are arranged on the left and right sides of the rubber sealing strip, the two rubber buffer pads are installed on the side of the mounting strip facing the F-shaped side beam, the front and rear sides of the top of the two mounting strips are fixedly connected to the crossbeam plate by bolts, and circular holes are opened at the four corners of the top of the two gaps.
[0006] Preferably, a sealing strip is installed on the top of the rubber sealing strip, and the sealing strip is located in the gap between the two mounting strips on opposite sides.
[0007] Preferably, the corners on both sides of the two F-shaped side beams are fixed with connecting angle steel by bolts.
[0008] Preferably, multiple anchor plates are fixedly connected to both sides of the two F-shaped side beams, and anchor bars are fixedly connected to the rear side of the multiple anchor plates.
[0009] Preferably, two symmetrical protective steel plates are attached to both the front and rear sides of the rubber sealing strip, and one end of the protective steel plate is fixedly connected to the connecting angle steel by bolts.
[0010] Preferably, the anchor plate and anchor bars are cast into the inner cavity of the highway by concrete.
[0011] The beneficial effects of this utility model are:
[0012] 1. This utility model uses the combined use of rubber sealing strip, mounting strip and sealing strip to fix the top of the mounting strip on the two crossbeams, thereby allowing the sealing strip to be installed on top of the rubber sealing strip to ensure the sealing effect. This achieves the purpose of blocking rainwater and debris, filling gaps and preventing intrusion, blocking large particles, keeping the inside of the expansion joint clean and dry, and the rubber buffer pad absorbing the impact of vehicle loads, thereby improving the stability and durability of the sealing structure.
[0013] 2. This utility model uses a sealing strip to fill the gap between the rubber sealing strip and the installation strip, filling the tiny gaps and forming multiple sealing lines to effectively prevent rainwater, dust, and gravel from entering the expansion joint. Even if the rubber sealing strip undergoes slight deformation or displacement due to long-term use, the sealing strip can still fill the gaps with its own elasticity to ensure the sealing effect and prevent moisture from seeping in and eroding the expansion joint structure and road base.
[0014] 3. This utility model provides a reliable fixing point for the protective steel plate by setting up connecting angle steel and fastening it with bolts. This ensures that the protective steel plate remains firmly installed under long-term vehicle pressure and environmental factors, preventing the protective steel plate from loosening or shifting and maintaining the integrity of the expansion joint sealing and protection system. Attached Figure Description
[0015] The advantages of the present invention, as described above and / or in the following detailed description in conjunction with the accompanying drawings, will become clearer and more readily understood. These drawings are merely illustrative and do not limit the scope of the present invention.
[0016] Figure 1 This is a front view schematic diagram of one embodiment of the present utility model;
[0017] Figure 2 This is a partial three-dimensional schematic diagram of one embodiment of the present utility model;
[0018] Figure 3 This is a front view schematic diagram of an expansion joint structure according to an embodiment of the present invention;
[0019] Figure 4 This is a cross-sectional plan view of one embodiment of the present invention;
[0020] Figure 5 This is a three-dimensional schematic diagram of a rubber sealing strip and a rubber buffer pad according to an embodiment of the present invention.
[0021] The attached diagram lists the components represented by each number as follows:
[0022] 1. Highway, 2. Gap, 3. F-shaped side beam, 4. Rubber sealing strip, 5. Rubber sealing tape, 6. Installation pressure strip, 7. Sealing strip, 8. Rubber buffer pad, 9. Connecting angle steel, 10. Crossbeam plate, 11. Circular hole, 12. Anchor plate, 13. Anchor bar, 14. Protective steel plate. Detailed Implementation
[0023] In the following description, embodiments of the highway expansion joint structure of this utility model will be described with reference to the accompanying drawings.
[0024] Figure 1-5This invention illustrates a highway expansion joint structure according to an embodiment of the present invention. The structure includes a gap 2 at the center axis of the highway 1. Two symmetrical F-shaped side beams 3 are arranged within the cavity of the gap 2. Rubber sealing strips 4 are installed on the opposing sides of the two F-shaped side beams 3. Rubber sealing strips 5 are installed at the gap at the top of the two F-shaped side beams 3. The front and rear sides of the rubber sealing strips 5 are fitted to the front and rear sides of the two F-shaped side beams 3. The rubber sealing strips 5 are located on top of the rubber sealing strips 4. Mounting strips 6 are fitted to the left and right sides of the top of the rubber sealing strips 5. A sealing strip 7 is installed on the top of the expansion joint. The sealing strip 7 is located in the gap between the two mounting strips 6 on opposite sides. Through the installation of the sealing strip 7, it fills the gap between the rubber sealing strip 5 and the mounting strip 6, filling tiny voids and forming multiple lines of defense to effectively prevent rainwater, dust, and gravel from intruding into the expansion joint. Even if the rubber sealing strip 5 undergoes slight deformation or displacement due to long-term use, the sealing strip 7 can still fill the gap through its own elasticity, ensuring a sealing effect and preventing moisture from seeping in and eroding the expansion joint structure and road base. Rubber buffer pads 8 are installed on both sides of the sealing strip 5. The two rubber buffer pads 8 are installed on the side of the mounting strip 6 facing the F-shaped side beam 3. The corners on both sides of the two F-shaped side beams 3 are fixed with connecting angle steel 9 by bolts. Through the setting of the connecting angle steel 9, the connecting angle steel 9 provides a reliable fixed support point for the protective steel plate 14 by bolt fastening, ensuring that it remains firmly installed under long-term vehicle rolling and environmental factors, avoiding loosening and displacement of the protective steel plate, and maintaining the integrity of the expansion joint sealing and protection system. For integrity, the front and rear sides of the top of the two mounting strips 6 are fixedly connected to the crossbeam plate 10 by bolts. The four corners of the top of the two gaps 2 are provided with circular holes 11. The left and right sides of the two F-shaped side beams 3 are fixedly connected to multiple anchor plates 12. The rear side of the multiple anchor plates 12 is fixedly connected to anchor bars 13. The front and rear sides of the rubber sealing strip 5 are attached with two symmetrical protective steel plates 14. One end of the protective steel plate 14 is fixedly connected to the connecting angle steel 9 by bolts. The anchor plates 12 and anchor bars 13 are poured into the inner cavity of the highway 1 by concrete.
[0025] Working Principle: In use, this invention utilizes the cooperation of F-shaped side beams 3, rubber sealing strips 4, anchor plates 12, and anchor bars 13, installed in the gaps 2 created in the highway 1. First, the rubber sealing strip 5 directly covers the gaps at the top of the two F-shaped side beams 3, filling the gaps through its own deformation and blocking rainwater and debris. The mounting strip 6 is installed on the top of the two F-shaped side beams 3, applying pressure evenly to ensure the rubber sealing strip 5 tightly adheres to the gaps, enhancing the sealing effect. A rubber buffer pad 8 is installed between the mounting strip 6 and the F-shaped side beams 3 to absorb vehicle... The impact force generated by rolling buffers the components of F-shaped side beam 3, anchor plate 12 and anchor bar 13, while also helping to fill gaps and improve sealing performance. The sealing strip 7 fills the tiny gap between the top of the rubber sealing strip 5 and the installation pressure strip 6, forming multiple sealing defenses to prevent water vapor and dust penetration. The protective steel plate 14 is installed on the front and rear sides of the rubber sealing strip 5 to resist vehicle rolling and foreign object impact, and to block large particles of debris. The protective steel plate 14 is firmly connected to the two F-shaped side beams 3 by connecting angle steel 9 and bolts, making the protective steel plate 14 relatively stable and ensuring the effective operation of the expansion joint.
[0026] In summary, this highway expansion joint structure, through the combined use of rubber sealing strip 5, mounting strip 6, and sealing strip 7, allows the two crossbeams 10 to fix the top of the mounting strip 6, thereby allowing the sealing strip 7 to be installed on top of the rubber sealing strip 4, ensuring a sealing effect. This achieves the goals of blocking rainwater and debris, filling the gap to prevent intrusion, blocking large particles, keeping the interior of the expansion joint clean and dry, and allowing the rubber buffer pad to absorb the impact of vehicle loads, thus improving the stability and durability of the sealing structure.
Claims
1. A highway expansion joint structure, characterized in that, A gap (2) is provided at the central axis of the highway (1). Two symmetrical F-shaped side beams (3) are provided in the inner cavity of the gap (2). A rubber sealing strip (4) is installed on the opposite side of the two F-shaped side beams (3). A rubber sealing strip (5) is installed at the gap at the top of the two F-shaped side beams (3). The front and rear sides of the rubber sealing strip (5) are attached to the front and rear sides of the two F-shaped side beams (3). The rubber sealing strip (5) is located on the top of the rubber sealing strip (4). The left and right sides of the top of the rubber sealing strip (5) are attached to the mounting pressure strip (6). A rubber buffer pad (8) is provided on the left and right sides of the rubber sealing strip (5). The two rubber buffer pads (8) are installed on the opposite side of the mounting pressure strip (6) and the F-shaped side beam (3). The front and rear sides of the top of the two mounting pressure strips (6) are fixedly connected to the crossbeam plate (10) by bolts. Circular holes (11) are provided at the four corners of the top of the two gaps (2).
2. The highway expansion joint structure according to claim 1, characterized in that, A sealing strip (7) is installed on the top of the rubber sealing strip (5), and the sealing strip (7) is located in the gap between the two mounting strips (6) facing each other.
3. The highway expansion joint structure according to claim 2, characterized in that, The corners of the two F-shaped side beams (3) are fixed with connecting angle steel (9) by bolts.
4. The highway expansion joint structure according to claim 3, characterized in that, Multiple anchor plates (12) are fixedly connected to the left and right sides of the two F-shaped side beams (3), and anchor bars (13) are fixedly connected to the rear side of the multiple anchor plates (12).
5. The highway expansion joint structure according to claim 4, characterized in that, The rubber sealing strip (5) has two symmetrical protective steel plates (14) attached to both the front and rear sides. One end of the protective steel plate (14) is fixedly connected to the connecting angle steel (9) by bolts.
6. The highway expansion joint structure according to claim 5, characterized in that, The anchor plate (12) and anchor bar (13) are cast into the cavity of the highway (1) by concrete.