Detachable comb plate expansion joint structure suitable for slow bridge
By adopting double-slit comb-tooth plate structure and inverted T-shaped slide frame at the expansion joints of the slow-moving bridge, the problem of unsmooth expansion joints of the existing single-slit comb-tooth plate is solved, which improves the comfort and safety of slow-moving people when passing through, and maintains good sealing and water discharge effect.
Patent Information
- Application Number
- CN202420422655.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-06
- Publication Date
- 2025-03-11
- Estimated Expiration
- 2034-03-06
AI Technical Summary
The comb-tooth plate expansion joint of the existing slow-moving bridge is a single-slit structure, with large spacing between the tooth plates, which leads to poor smooth passage of slow-moving people, which can easily lead to tripping and falling injuries.
The double-slit comb tooth plate structure is adopted. By setting the beam joint gap on both sides of the expansion joint, and setting a reserved groove and embedded base between the fixed steel box and the embedded base, the fixed steel box and the embedded base are installed, and the anchor bolts are connected and assembled with the beam body, combined with the inverted T-shaped slide frame and limiting components, the telescopicity of the double-slit and centralized reset of the sliding tooth plate is achieved.
It improves the comfort, stability and safety of slow travelers when passing through expansion joints, maintains good sealing, isolates the internal and external environment, and concentrates the discharge of infiltration water through structures such as waterproof baffles, water stops and drains pipes.
Smart Images
Figure CN222594582U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of bridges, and in particular provides a detachable comb plate expansion joint structure suitable for a slow-moving bridge. Background Art
[0002] An expansion joint refers to a structural joint set along the construction joint direction of a building or structure to prevent cracks or damage to the structure due to climate temperature changes (thermal expansion and contraction), so that the building or structure can make an appropriate amount of horizontal expansion and contraction.
[0003] As urban development and construction increasingly emphasize the core concept of "people-oriented", slow-moving bridges (bicycle bridges, pedestrian bridges, etc.) as a low-carbon mode of transportation are becoming more and more popular and valued. They not only meet the needs of short-distance commuting, but also help improve air quality and alleviate traffic congestion in cities. The construction of slow-moving bridges can also achieve the separation of fast and slow motor vehicles and slow walkers, thereby improving driving safety.
[0004] Slow-moving bridges need to pay attention to the safety and comfort of passing through the expansion joints. The comb plate expansion joints commonly used at present are single-slit structures with large tooth plate spacing, which makes passing through the tooth plate gaps unsmooth and easily leads to tripping and falls. In order to improve the comfort of slow-moving bridges and ensure the continuity and stability of cyclists and pedestrians passing through the expansion joints, a detachable comb plate expansion joint structure suitable for slow-moving bridges is urgently needed. Utility Model Content
[0005] In order to solve the above technical problems, the utility model provides a detachable comb plate expansion joint structure suitable for a slow-moving bridge, which improves the safety and comfort of traveling on the slow-moving bridge through a double-slit comb plate structure with good sealing performance.
[0006] The utility model is implemented in this way, providing a detachable comb plate expansion joint structure suitable for a slow-moving bridge, a beam gap is reserved between beam bodies on both sides of the expansion joint, reserved grooves are provided at the butt ends of the beam bodies on both sides, embedded bases are arranged in the reserved grooves, and fixed steel boxes are installed on the upper surfaces of the embedded bases, and the fixed steel boxes and the embedded bases are connected and assembled with the beam bodies through anchor bolts;
[0007] The tops of the side walls of the fixed steel boxes on both sides that are close to each other are provided with telescopic tooth plates, and the sides of the telescopic tooth plates on both sides that are close to each other are provided with comb tooth grooves, and the first comb teeth are evenly arranged in the comb tooth grooves. A guide seat is evenly fixedly installed on the side wall of one of the fixed steel boxes, and a sliding groove is opened inside the guide seat. An inverted T-shaped sliding frame is slidably installed in the sliding groove. Elastic parts are installed between the two ends of the sliding groove and the inverted T-shaped sliding frame. The upper end of the inverted T-shaped sliding frame is connected to the sliding tooth plate, and the second comb teeth are evenly arranged on both sides of the sliding tooth plate. The first comb teeth and the second comb teeth are staggered and plugged together;
[0008] A limit position component is arranged between the inverted T-shaped sliding frame and the telescopic tooth plate.
[0009] Preferably, the limit assembly includes an upper clamping block, a lower clamping block and a support frame, both sides of the inverted T-shaped sliding frame are connected to one end of the support frame, the other end of the support frame is provided with a lower clamping block, and upper clamping blocks are provided at the ends of the lower surfaces of the two telescopic tooth plates that are close to each other, and the upper clamping blocks on both sides are located between the lower clamping blocks on both sides.
[0010] More preferably, the lower surface of the upper clamping block is 5 to 10 mm lower than the upper surface of the lower clamping block.
[0011] Further preferably, the upper surfaces of the fixed steel box, the telescopic tooth plate and the sliding tooth plate are flush with the upper surface of the beam body.
[0012] Further preferably, a waterstop is installed at the upper end of the beam gap, and a drain pipe is installed at the bottom of one end of the waterstop, and the drain pipe is located in the beam gap.
[0013] Further preferably, waterproof baffles are fixedly installed on the sides of the embedded bases that are close to each other, and flanges are provided on the ends of the waterproof baffles on both sides that are close to each other, and the water stop strips are snap-fitted and assembled with the flanges.
[0014] Further preferably, a slope is provided on the top of the waterproof baffle, and an end of the slope close to the waterstop is lower than an end of the slope away from the waterstop.
[0015] Further preferably, the fixed steel box, the waterproof baffle and the embedded base are steel sections with a cavity.
[0016] Compared with the prior art, the advantages of the utility model are:
[0017] The utility model provides a detachable comb plate expansion joint structure suitable for slow-moving bridges, which can be used for various slow-moving bridges, and utilizes structures such as two gaps of double-slot expansion and contraction and a sliding tooth plate that can be centrally reset and moved to compensate for the gap between the comb teeth, thereby improving the comfort, stability and safety of slow-moving people (cyclists, pedestrians, etc.) passing through, and has wide applicability;
[0018] At the same time, the cooperation between the structure of the first comb teeth, the comb tooth grooves and the second comb teeth and the limit assembly can always maintain good sealing and isolate the internal and external environments;
[0019] The infiltrated water can also be discharged centrally through structures such as waterproof baffles, waterstops and drain pipes. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] The present invention is further described in detail below with reference to the accompanying drawings and implementation modes:
[0021] Figure 1It is a schematic top view of the structure of the utility model;
[0022] Figure 2 for Figure 1 A schematic cross-sectional view of the structure along the AA axis;
[0023] Figure 3 It is a schematic cross-sectional view of the structure of the inverted T-shaped sliding frame of the utility model;
[0024] Figure 4 for Figure 1 A schematic enlarged view of the structure at a in the middle.
[0025] In the figure: 1. lower clamping block, 2. support frame, 3. sliding tooth plate, 4. upper clamping block, 5. telescopic tooth plate, 6. anchor bolt, 7. fixed steel box, 8. embedded base, 9. waterproof baffle, 10. water stop belt, 11. drain pipe, 12. guide seat, 13. second comb teeth, 14. comb tooth groove, 15. first comb teeth, 16. elastic member. DETAILED DESCRIPTION
[0026] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.
[0027] The utility model discloses a detachable comb plate expansion joint structure suitable for a slow-moving bridge, such as Figure 1-Figure 4 As shown, it includes reserved grooves opened at the butt ends of the beam bodies on both sides, the cross-section of the reserved grooves is rectangular, and a beam gap is reserved between the beam bodies on both sides; embedded bases 8 are arranged in the reserved grooves, and the embedded bases 8 are used to compensate for the installation height of the fixed steel box 7, and the upper surface of the embedded bases 8 is installed with fixed steel boxes 7; the fixed steel box 7 and the embedded bases 8 are connected and assembled with the beam body through anchor bolts 6, and the anchor bolts 6 can adopt existing components such as expanded hole anchor bolts according to needs, and the fixed steel box 7, the embedded base 8 and the beam body are evenly provided with through holes for passing the anchor bolts 6, and the connection method of the anchor bolts 6 facilitates the rapid installation and disassembly of the fixed steel box 7 and the embedded base 8.
[0028] The top of the side walls of the fixed steel box 7 close to each other is provided with a telescopic tooth plate 5 by welding, the top of the telescopic tooth plate 5 is provided with a comb groove 14, and the top of the comb groove 14 is evenly provided with a first comb 15, one of the side walls of the fixed steel box 7 is evenly fixedly installed with a guide seat 12, the guide seat 12 is provided with a sliding groove, and an inverted T-shaped sliding frame is slidably installed in the sliding groove, and an elastic member 16 is fixedly installed between the inner ends of the sliding groove and the inverted T-shaped sliding frame, and the elastic member 16 is preferably a cylindrical coil spring, and the elastic member 16 is preferably a cylindrical coil spring. 6 can make the inverted T-shaped sliding frame have the ability to move to the center and reset; a sliding tooth plate 3 is fixedly installed on the upper end of the inverted T-shaped sliding frame, and second comb teeth 13 are evenly opened on both sides of the sliding tooth plate 3, and the second comb teeth 13 are located in the comb tooth groove 14, and the first comb teeth 15 and the second comb teeth 13 are staggered and plugged together; through the structure of the first comb teeth 15, the comb tooth groove 14 and the second comb teeth 13, it is possible to maintain sealing while compensating the expansion and contraction amount in translation, isolate the internal structure from the external environment, and prevent foreign matter from entering and affecting the normal compensation action.
[0029] At the same time, the upper surfaces of the fixed steel box 7, the telescopic tooth plate 5, and the sliding tooth plate 3 are flush with the upper surface of the beam body to ensure smooth passage.
[0030] like Figure 3 As shown, a limit position assembly is provided between the inverted T-shaped sliding frame and the telescopic tooth plate 5:
[0031] Specifically, the limit assembly includes an upper clamping block 4, a lower clamping block 1 and a support frame 2. One end of the support frame 2 is provided on both sides of the T-shaped sliding frame by welding, and the other end of the support frame 2 is provided with a lower clamping block 1 by integral molding. The ends of the lower surface of the telescopic tooth plate 5 that are close to each other are provided with upper clamping blocks 4, and the upper clamping blocks 4 on both sides are located between the lower clamping blocks 1 on both sides; when the upper clamping block 4 on one side or both sides moves to the extreme position as the telescopic tooth plate 5 translates, it can be abutted against the lower clamping block 1, thereby driving the bottom of the inverted T-shaped sliding frame to translate along the sliding groove of the guide seat 12 through the support frame 2, ensuring that the first comb teeth 15, the comb tooth groove 14 and the second comb teeth 13 can still remain sealed at the extreme position, and the elastic member 16 is stretched or compressed to store energy.
[0032] Furthermore, the lower surface of the upper clamping block 4 is 5 mm to 10 mm lower than the upper surface of the lower clamping block 1, thereby ensuring that the upper clamping block 4 and the lower clamping block 1 have sufficient overlapping parts in the vertical direction to ensure the transmission of the force when they are against each other.
[0033] Specifically, Figure 2 As shown, a waterstop 10 is installed at the top of the beam gap, and a drain pipe 11 is installed at the bottom of one end of the waterstop 10, and the drain pipe 11 is located in the beam gap; the waterstop 10 is used to collect water flowing into the inside, and as the waterstop 10 flows into the drain pipe 11, it is discharged downward into the municipal drainage network.
[0034] One end of the waterproof baffle 9 is fixedly installed on the side where the embedded base 8 is close to each other by welding, and the other end of the waterproof baffle 9 is provided with a flange, and the waterstop 10 is assembled with the flange; the waterstop 10 is mainly composed of a concave arc-shaped belt body and U-shaped clamping edges with openings on both sides facing downward, and the U-shaped clamping edges are clamped with the flanges, so as to facilitate the rapid installation of the waterstop 10; the setting of the waterproof baffle 9 can compensate for the height of the waterstop 10, so that the water flowing into the inside can smoothly enter the waterstop 10, and at the same time, the U-shaped clamping edges of the waterstop 10 also play a fixing role, which is beneficial to the installation and fixation of the waterstop 10.
[0035] Furthermore, a slope is provided on the top of the waterproof baffle 9, and the end of the slope close to the waterstop belt 10 is lower than the end of the slope away from the waterstop belt 10; through the setting of the slope, it is more conducive to the flow of water into the waterstop belt 10, so that the water can be fully discharged.
[0036] Specifically, the fixed steel box 7, the waterproof baffle 9 and the embedded base 8 are steel sections with cavities, which can be lightweight while ensuring the use strength.
[0037] Example:
[0038] The expansion joint adopts a double-slit comb plate structure composed of a first comb tooth 15 and a second comb tooth 13. The expansion joint size is set according to the expansion amount. For example, the expansion amount of a single slit is 4 cm, and the total expansion amount is 8 cm. The depth of the comb tooth groove 14 is 16 mm, and the thickness of the corresponding first comb tooth 15 and the second comb tooth 13 is also 16 mm to ensure the load capacity. The inverted T-shaped sliding frame adopts a sliding and elastic reset structure. When the inverted T-shaped sliding frame is not subjected to external force, it can automatically reset to the center. The sliding amount is 0 to 8 cm, which can keep the first comb tooth 15, the comb tooth groove 14 and the second comb tooth 13 to form a sealing structure to prevent foreign matter from entering.
[0039] The first comb teeth 15 and the second comb teeth 13 are 4 cm long and 2 cm wide in the expansion direction, and are rounded trapezoidal with a wide bottom and a narrow top. The standard transverse length of the expansion joint is 1 m, and the number of comb teeth can also be adjusted according to the bridge width to meet the requirements of different bridge widths.
[0040] When the unilateral expansion reaches a maximum of 4 cm or the bilateral expansion reaches a maximum of 8 cm, the upper clamping block 4 in the limit assembly abuts against the lower clamping block 1, thereby driving the bottom of the inverted T-shaped sliding frame to translate along the sliding groove of the guide seat 12 through the support frame 2, ensuring that the double seam expansion deformation is between 0 and 4 cm;
[0041] The arrangement of structures such as the waterproof baffle 9, the water stop 10 and the drain pipe 11 can collect the infiltrated rainwater, the sewage from cleaning the bridge deck, etc. and discharge them into the municipal drainage network.
[0042] Construction steps:
[0043] In the reserved groove, the integrated waterproof baffle 9 and the embedded base 8 are symmetrically placed, and then the water stop 10 and the drain pipe 11 are installed;
[0044] Then install the other assembled parts on the embedded base 8 and connect and fix them through the anchor bolts 6. The top of the anchor bolts 6 can be sealed with epoxy sealant;
[0045] When disassembly maintenance or replacement is required, only the anchor bolt 6 needs to be removed, and installation and disassembly are convenient.
[0046] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of ordinary technicians in this field without departing from the purpose of the present invention.
Claims
1. A detachable comb plate expansion joint structure suitable for a slow-moving bridge, characterized in that: A beam gap is reserved between the beam bodies on both sides of the expansion joint, reserved grooves are provided at the butt ends of the beam bodies on both sides, embedded bases (8) are provided in the reserved grooves, and fixed steel boxes (7) are installed on the upper surfaces of the embedded bases (8), and the fixed steel boxes (7) and the embedded bases (8) are connected and assembled with the beam bodies through anchor bolts (6); The tops of the side walls of the fixed steel boxes (7) on both sides close to each other are provided with telescopic tooth plates (5), and the sides of the telescopic tooth plates (5) on both sides close to each other are provided with comb tooth grooves (14), and the first comb teeth (15) are evenly arranged in the comb tooth grooves (14). A guide seat (12) is evenly fixedly installed on the side wall of one of the fixed steel boxes (7), and a sliding groove is provided inside the guide seat (12). An inverted T-shaped sliding frame is slidably installed in the sliding groove, and elastic members (16) are installed between the two ends of the sliding groove and the inverted T-shaped sliding frame. The upper end of the inverted T-shaped sliding frame is connected to the sliding tooth plate (3), and the two sides of the sliding tooth plate (3) are evenly provided with second comb teeth (13), and the first comb teeth (15) and the second comb teeth (13) are staggered and plugged together; A limit position assembly is arranged between the inverted T-shaped sliding frame and the telescopic tooth plate (5).
2. The detachable comb plate expansion joint structure suitable for a slow-moving bridge according to claim 1 is characterized in that: The limit assembly comprises an upper clamping block (4), a lower clamping block (1) and a support frame (2); both sides of the inverted T-shaped sliding frame are connected to one end of the support frame (2); the other end of the support frame (2) is provided with a lower clamping block (1); upper clamping blocks (4) are provided at the ends of the lower surfaces of the two telescopic tooth plates (5) that are close to each other; and the upper clamping blocks (4) on both sides are located between the lower clamping blocks (1) on both sides.
3. The detachable comb plate expansion joint structure suitable for a slow-moving bridge according to claim 2 is characterized in that: The lower surface of the upper clamping block (4) is 5 to 10 mm lower than the upper surface of the lower clamping block (1).
4. The detachable comb plate expansion joint structure suitable for a slow-moving bridge according to claim 1 is characterized in that: The upper surfaces of the fixed steel box (7), the telescopic tooth plate (5) and the sliding tooth plate (3) are flush with the upper surface of the beam body.
5. The detachable comb plate expansion joint structure suitable for a slow-moving bridge according to claim 1 is characterized in that: A water stop strip (10) is installed at the upper end of the beam gap, and a drain pipe (11) is installed at the bottom of one end of the water stop strip (10), and the drain pipe (11) is located in the beam gap.
6. The detachable comb plate expansion joint structure suitable for a slow-travel bridge according to claim 5 is characterized in that: A waterproof baffle (9) is fixedly installed on the side of the embedded base (8) close to each other, and a flange is provided on the end of the waterproof baffles (9) on both sides close to each other, and the water stop belt (10) is snap-fitted and assembled with the flange.
7. The detachable comb plate expansion joint structure suitable for a slow-moving bridge according to claim 6 is characterized in that: A slope is provided on the top of the waterproof baffle (9), and an end of the slope close to the waterstop (10) is lower than an end of the slope away from the waterstop (10).
8. The detachable comb plate expansion joint structure suitable for a slow-travel bridge according to claim 6 is characterized in that: The fixed steel box (7), the waterproof baffle (9) and the embedded base (8) are steel sections with cavities.