Bridge expansion joint with waterproof structure
By using a combination of waterproof rubber strips, waterstops, and expanding silicone strips in bridge expansion joints, along with drainage channels and systems, the problem of water seepage in bridge expansion joints has been solved, achieving better waterproofing and structural stability.
Patent Information
- Application Number
- CN202423057549.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-11
- Publication Date
- 2025-11-14
- Estimated Expiration
- 2034-12-11
AI Technical Summary
Existing bridge expansion joints lack sealing capabilities, making them prone to water seepage during rainy weather and affecting the bridge's usability.
A waterproof structural bridge expansion joint was designed, including a waterproof rubber strip, a waterstop strip, and an expansion silicone strip installed on the base. Excess water is drained by setting a water channel and a water collection seat in the mounting base, and a drainage cavity and a drainage pipe are set in the waterproof rubber strip to drain internal water. The structure is enhanced by combining springs and reinforcing plates.
It effectively prevents water seepage from bridge expansion joints, improves waterproofing performance, ensures the normal expansion and contraction function of bridges, and enhances the stability and load-bearing capacity of the structure.
Smart Images
Figure CN223548417U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of bridge engineering technology, specifically a waterproof structural bridge expansion joint. Background Technology
[0002] Bridge expansion joints are joints installed between the ends of two beams, between a beam end and an abutment, or at hinged joints of the bridge to accommodate bridge deck deformation. These joints must allow free expansion and contraction in both directions parallel and perpendicular to the bridge axis, be robust and reliable, and provide a smooth ride for vehicles without bumps or noise. They must also prevent rainwater and debris from seeping in and causing blockages. Installation, inspection, maintenance, and cleaning should be simple and convenient. At the location of an expansion joint, the railings and bridge deck pavement must be disconnected. Expansion joints are an important component of the bridge structure, ensuring the normal expansion and contraction function of the bridge beams.
[0003] Based on the above, the inventors have discovered the following problems: current bridge expansion joints do not have a sealing function. When encountering rainy weather, there are gaps between the bridge expansion joint and the waterstop, which can easily lead to water seepage and affect the use of the bridge expansion joint to a certain extent.
[0004] Therefore, in view of this, we have studied and improved the existing structure and its shortcomings, and provided a waterproof bridge expansion joint in order to achieve a more practical purpose. Utility Model Content
[0005] The purpose of this invention is to provide a waterproof structural bridge expansion joint to solve the problems mentioned in the background art.
[0006] In view of the above problems, the technical solution proposed by this utility model is as follows:
[0007] A waterproof structural bridge expansion joint includes a main body, which includes a pair of bases. Each pair of bases has a groove on its opposite side. A waterproof rubber strip connects the grooves. A sealing mechanism is provided at the upper end of each pair of bases. The sealing mechanism includes two mounting seats, the bottom ends of which are connected to the upper ends of the pair of bases. Each mounting seat has an opening on its opposite side. A waterstop is provided between the openings, the bottom surface of which is connected to the bottom of the opening. An expansion silicone strip is connected to the upper end of each opening, and the bottom ends of both expansion silicone strips are arc-shaped.
[0008] Furthermore, both mounting bases have water channels inside, and both water channels are L-shaped.
[0009] The beneficial effect of adopting the above-mentioned further solution is that by opening a water channel inside the mounting base, when the expanding silicone strip expands when it comes into contact with water, and the water inside it overflows into the mounting base due to excessive water, it is easy to drain the water inside the mounting base to the outside of the mounting base through the water channel.
[0010] Furthermore, a water collection seat is provided between the opposite ends of the two water channels. The water collection seat is connected to the opposite side of a pair of mounting seats at its two ends near the top. A water collection cavity is opened inside the water collection seat. A flow pipe is connected to the bottom end of the water collection seat. The bottom end of the flow pipe extends into the interior through a waterproof rubber strip.
[0011] The beneficial effect of adopting the above-mentioned further solution is that by setting a water collection seat between the two water troughs, with the opposite ends of the two water troughs aligned with the two inlets of the water collection seat, the water troughs send water into the interior of the water collection seat, and then the flow pipe connected to the bottom of the water collection seat sends the water in the water collection cavity of the water collection seat to the interior of the waterproof rubber belt.
[0012] Furthermore, the waterproof rubber strip has a drainage cavity inside, and the bottom end of the waterproof rubber strip is connected to a drainage pipe.
[0013] The beneficial effect of adopting the above-mentioned further solution is that, since the waterproof rubber strip has a drainage cavity inside, the water that enters the waterproof rubber strip is discharged to the outside of the expansion joint through the drainage pipe, thus preventing water from accumulating inside the expansion joint.
[0014] Furthermore, the outer walls of both ends of the waterproof rubber strip are tightly fitted to the inner walls of a pair of grooves.
[0015] The beneficial effect of adopting the above-mentioned further solution is that by tightly fitting the outer walls of both ends of the waterproof rubber strip with the inner wall of the groove, the waterproof performance of the expansion joint is further improved.
[0016] Furthermore, one of the bases is connected to a first connecting block on both outer sides, and the other base is connected to a second connecting block on both outer sides. A fixed cylinder is connected to one side of the second connecting block. A circular plate is slidably connected inside the fixed cylinder. A circular rod is connected to one end of the circular plate. The end of the circular rod away from the circular plate extends through the fixed cylinder to the outside and is connected to the first connecting block. A spring is connected to the end of the circular plate away from the circular rod. The end of the spring away from the circular plate is connected to the inner wall of the fixed cylinder.
[0017] The beneficial effect of adopting the above-mentioned further solution is that by setting a spring, the elastic action of the spring on the round rod allows the round rod to elastically expand and contract inside the fixed cylinder, thereby facilitating the elastic reset of a pair of bases under the action of the first connecting block and the second connecting block, and thus realizing the elastic reset of the bridge expansion joint.
[0018] Furthermore, a plurality of reinforcing plates are installed at the bottom of each pair of bases, and reinforcing ribs are installed at the edges of the plurality of reinforcing plates.
[0019] The beneficial effect of adopting the above-mentioned further solution is that by setting a reinforcing plate on the outside of the base and installing reinforcing ribs at the edge of the reinforcing plate, the load-bearing capacity of the base is enhanced, thereby improving the stability of the expansion joint structure.
[0020] Compared with the prior art, the beneficial effects of this utility model are as follows: This waterproof bridge expansion joint, by opening grooves on the opposite sides of a pair of bases, facilitates the installation of waterproof rubber strips. The combined use of the waterstop and the waterproof rubber strip improves the waterproof effect of the bridge expansion joint. By setting an expanding silicone strip, which expands upon contact with water, its deformation volume increases, thus filling the gap between the opening and the waterstop. The bottom end of the expanding silicone strip presses against the upper end of the waterstop inside the opening, preventing leakage. Furthermore, by opening a water channel inside the mounting base, when the expansion... When the silicone rubber strip expands upon contact with water, excessive water may overflow into the mounting base. This overflow is facilitated by a drainage channel to drain the water from the mounting base's interior. A water collection base is installed between the two drainage channels, with the opposite ends of the two channels aligned with their respective inlets. This allows the drainage channels to draw water into the collection base, which is then channeled through a flow pipe at its bottom to the waterproof rubber strip. The waterproof rubber strip has a drainage chamber inside, allowing water to drain through the drain pipe to the outside of the expansion joint, preventing water accumulation within the expansion joint. Attached Figure Description
[0021] Figure 1 A three-dimensional structural diagram of a waterproof bridge expansion joint provided by this utility model;
[0022] Figure 2 A three-dimensional structural diagram of the base and waterproof rubber strip of a waterproof bridge expansion joint provided by this utility model;
[0023] Figure 3 A three-dimensional structural diagram of a waterproof rubber strip and water collection base for a waterproof bridge expansion joint provided by this utility model;
[0024] Figure 4 A three-dimensional structural diagram of a mounting base for a waterproof bridge expansion joint provided by this utility model;
[0025] Figure 5 This is a side sectional view of the mounting base for a waterproof bridge expansion joint provided by this utility model.
[0026] In the diagram: 100, main body; 1001, base; 1002, groove; 1003, waterproof rubber strip; 1004, drain pipe; 1005, first connecting block; 1006, second connecting block; 1007, fixing cylinder; 1008, round plate; 1009, round rod; 1010, spring; 1011, reinforcing plate; 1012, reinforcing rib; 200, sealing mechanism; 2001, mounting base; 2002, opening; 2003, waterstop strip; 2004, expanding silicone strip; 2005, water channel; 2006, water collection base; 2007, flow pipe. Detailed Implementation
[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0028] Please see Figures 1-5 This utility model provides a technical solution: a waterproof structural bridge expansion joint, including a main body 100, the main body 100 including a pair of bases 1001, each of the opposite sides of the pair of bases 1001 having a groove 1002, a waterproof rubber strip 1003 connected between the pair of grooves 1002, a sealing mechanism 200 provided at the upper end of the pair of bases 1001, the sealing mechanism 200 including two mounting seats 2001, the bottom ends of the two mounting seats 2001 respectively connected to the upper ends of the pair of bases 1001, and each of the opposite sides of the two mounting seats 2001 having an opening 2002, a waterstop 2003 provided between the pair of openings 2002, the bottom surface of the waterstop 2003 connected to the inner bottom end of the opening 2002, the pair of The upper end of each opening 2002 is connected to an expansion silicone strip 2004. The bottom ends of both expansion silicone strips 2004 are arc-shaped. By opening grooves 1002 on the opposite side of a pair of bases 1001, it is easy to install a waterproof rubber strip 1003. The combined use of the waterstop 2003 and the waterproof rubber strip 1003 improves the waterproof effect of the bridge expansion joint. By setting the expansion silicone strip 2004, the expansion silicone strip 2004 expands when it comes into contact with water, causing the deformation volume of the expansion silicone strip 2004 to increase, thereby filling the gap between the opening 2002 and the waterstop 2003. The bottom end of the expansion silicone strip 2004 squeezes the upper end of the waterstop 2003 located inside the opening 2002 to prevent leakage.
[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0030] Please see Figures 1-5 This utility model provides a technical solution: Two mounting bases 2001 each have an internal water channel 2005, both water channels 2005 being L-shaped. A water collection seat 2006 is provided between the opposite ends of the two water channels 2005. The two ends of the water collection seat 2006 near the top are respectively connected to the opposite sides of a pair of mounting bases 2001. The water collection seat 2006 has a water collection cavity inside, and a flow pipe 2007 is connected to the bottom end of the water collection seat 2006. The bottom end of the flow pipe 2007 extends through a waterproof rubber strip 1003 into the interior. A drainage cavity is provided inside the waterproof rubber strip 1003, and a drainage pipe 1004 is connected to the bottom end of the waterproof rubber strip 1003. The outer walls of both ends of the waterproof rubber strip 1003 are tightly fitted to the inner walls of a pair of grooves 1002. Water is collected by opening water channels inside the mounting bases 2001. The groove 2005 is used to drain water from the inner cavity of the mounting base 2001 when the expanding silicone strip 2004 expands upon contact with water, causing excessive water to overflow into the mounting base 2001. A water collection base 2006 is installed between the two water grooves 2005, with the opposite ends of the two water grooves 2005 aligned with the two inlets of the water collection base 2006. This allows the water grooves 2005 to send water into the water collection base 2006, and then the flow pipe 2007 connected to the bottom of the water collection base 2006 sends the water from the water collection cavity of the water collection base 2006 to the interior of the waterproof rubber strip 1003. Since the waterproof rubber strip 1003 has a drainage cavity, the water entering the waterproof rubber strip 1003 is drained to the outside of the expansion joint through the drain pipe 1004, preventing water accumulation in the expansion joint.
[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0032] Please see Figures 1-5This utility model provides a technical solution: A first connecting block 1005 is connected to both outer sides of one base 1001, and a second connecting block 1006 is connected to both outer sides of the other base 1001. A fixing cylinder 1007 is connected to one side of the second connecting block 1006. A circular plate 1008 is slidably connected inside the fixing cylinder 1007. A circular rod 1009 is connected to one end of the circular plate 1008. The end of the circular rod 1009 away from the circular plate 1008 extends through the fixing cylinder 1007 to the outside and is connected to the first connecting block 1005. A spring 1010 is connected to the end of the circular plate 1008 away from the circular rod 1009. The end of the spring 1010 away from the circular plate 1008 is connected to the inner wall of the fixing cylinder 1007. Each pair of bases 1001 has several reinforcing plates 1011 installed at its bottom end, and reinforcing ribs 1012 installed at the edges of the reinforcing plates 1011. By setting springs 1010, the round rod 1009 is elastically extended and retracted inside the fixed cylinder 1007 through the elastic action of the springs 1010 on the round rod 1009. This facilitates the elastic reset of the pair of bases 1001 under the action of the first connecting block 1005 and the second connecting block 1006, thereby realizing the elastic reset of the bridge expansion joint. By setting reinforcing plates 1011 on the outside of the bases 1001 and installing reinforcing ribs 1012 at the edges of the reinforcing plates 1011, the load-bearing capacity of the bases 1001 is enhanced, thereby improving the stability of the expansion joint structure.
[0033] Specifically, the working principle of this type of waterproof bridge expansion joint is as follows: During use, grooves 1002 are opened on opposite sides of a pair of bases 1001 to facilitate the installation of a waterproof rubber strip 1003. The combined use of the waterstop 2003 and the waterproof rubber strip 1003 improves the waterproofing effect of the bridge expansion joint. Furthermore, an expansion silicone strip 2004 is installed; due to its expansion upon contact with water, the expansion silicone strip 2004 deforms, increasing its volume and thus sealing the gap between the opening 2002 and the waterstop 2003. The filling process ensures that the bottom end of the expanding silicone strip 2004 presses against the upper end of the waterstop 2003 located inside the opening 2002 to prevent leakage. A water channel 2005 is provided inside the mounting base 2001. When the expanding silicone strip 2004 expands upon contact with water, excessive water overflows into the mounting base 2001, facilitating drainage of the water from the inner cavity of the mounting base 2001 to the outside through the water channel 2005. A water collection base 2006 is provided between the two water channels 2005. One end of each end is aligned with the two inlets of the water collection base 2006, allowing the water flow channel 2005 to deliver water into the interior of the water collection base 2006. The water then flows through the circulation pipe 2007 connected to the bottom of the water collection base 2006 to the interior of the waterproof rubber strip 1003. Because the waterproof rubber strip 1003 has a drainage chamber, the water entering the waterproof rubber strip 1003 is discharged to the outside of the expansion joint through the drainage pipe 1004, preventing water accumulation in the expansion joint. A spring 1010 is also installed to facilitate this process. The elastic action of the 10 pairs of round rods 1009 allows the round rods 1009 to elastically expand and contract inside the fixed cylinder 1007, thereby facilitating the elastic reset of a pair of bases 1001 under the action of the first connecting block 1005 and the second connecting block 1006, and thus realizing the elastic reset of the bridge expansion joint. By setting a reinforcing plate 1011 on the outside of the base 1001 and installing reinforcing ribs 1012 at the edge of the reinforcing plate 1011, the load-bearing capacity of the base 1001 is enhanced, thereby improving the stability of the expansion joint structure.
Claims
1. A waterproof structural bridge expansion joint, characterized in that, The system includes a main body (100), which includes a pair of bases (1001). Each pair of bases (1001) has a groove (1002) on its opposite side. A waterproof rubber strip (1003) connects the pair of grooves (1002). A sealing mechanism (200) is provided at the upper end of each pair of bases (1001). The sealing mechanism (200) includes two mounting seats (2001), and the bottom ends of the two mounting seats (2001) are respectively... The upper ends of the mounting bases (1001) are connected to each other, and openings (2002) are provided on the opposite sides of the two mounting bases (2001). A waterstop (2003) is provided between the two openings (2002). The bottom surface of the waterstop (2003) is connected to the bottom of the inside of the opening (2002). An expansion silicone strip (2004) is connected to the upper end of each of the two openings (2002). The bottom ends of the two expansion silicone strips (2004) are arc-shaped.
2. The waterproof structural bridge expansion joint according to claim 1, characterized in that, Both of the mounting bases (2001) have water channels (2005) inside, and both water channels (2005) are "L" shaped.
3. A waterproof structural bridge expansion joint according to claim 2, characterized in that, A water collection base (2006) is provided between the opposite ends of the two water channels (2005). The water collection base (2006) is connected to the opposite side of a pair of mounting bases (2001) at its two ends near the top. A water collection cavity is provided inside the water collection base (2006). A flow pipe (2007) is connected to the bottom end of the water collection base (2006). The bottom end of the flow pipe (2007) extends into the interior through a waterproof rubber strip (1003).
4. A waterproof structural bridge expansion joint according to claim 1, characterized in that, The waterproof rubber strip (1003) has a drainage cavity inside, and the bottom end of the waterproof rubber strip (1003) is connected to a drainage pipe (1004).
5. A waterproof structural bridge expansion joint according to claim 4, characterized in that, The outer walls of both ends of the waterproof rubber strip (1003) are tightly fitted to the inner walls of a pair of grooves (1002).
6. A waterproof structural bridge expansion joint according to claim 5, characterized in that, One of the bases (1001) has a first connecting block (1005) connected to both outer sides, and the other base (1001) has a second connecting block (1006) connected to both outer sides. A fixed cylinder (1007) is connected to one side of the second connecting block (1006). A circular plate (1008) is slidably connected inside the fixed cylinder (1007). A circular rod (1009) is connected to one end of the circular plate (1008). The end of the circular rod (1009) away from the circular plate (1008) extends through the fixed cylinder (1007) to the outside and is connected to the first connecting block (1005). A spring (1010) is connected to the end of the circular plate (1008) away from the circular rod (1009). The end of the spring (1010) away from the circular plate (1008) is connected to the inner wall of the fixed cylinder (1007).
7. A waterproof structural bridge expansion joint according to claim 6, characterized in that, Each of the bases (1001) has a plurality of reinforcing plates (1011) installed at its bottom end, and each of the reinforcing plates (1011) has a reinforcing rib (1012) installed at its edge.