Bridge telescopic assembly with stable waterproof structure
By introducing structures such as waterstop strips, locking clips, support plates, and flow channels into the bridge expansion joints, the problems of waterstop strip detachment and sand and gravel blockage have been solved, achieving more efficient rainwater diversion and component stability, thereby improving the bridge's waterproof performance and driving safety.
Patent Information
- Application Number
- CN202423251413.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-27
- Publication Date
- 2025-12-05
- Estimated Expiration
- 2034-12-27
AI Technical Summary
Existing bridge expansion joints are prone to waterproof strip detachment and blockage by sand and gravel in heavy rain, leading to failure of waterproofing function and affecting driving safety.
A bridge expansion joint was designed, including a waterstop strip, a locking buckle, a support plate, and a flow channel structure. The water storage section and the bending section enhance the rainwater storage and diversion capacity, the locking buckle increases stability, the flow channel and the drainage hole prevent sand and gravel blockage, and the support plate and the shock-absorbing plate ensure the stability of the joint and easy replacement.
It effectively improves the waterproof performance of bridge expansion joints, prevents rainwater accumulation and sand and gravel blockage, enhances the stability and ease of replacement of waterstop strips, and ensures driving safety.
Smart Images

Figure CN223633786U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to bridge expansion device technical field more specifically is related to a bridge expansion assembly with stable waterproof structure. BACKGROUND
[0002] Bridge expansion device is a very important component in bridge structure, it allows the bridge deck to expand or contract according to temperature change, humidity, vehicle load and earthquake and other factors. Without proper expansion joint, the bridge can be damaged due to thermal expansion and contraction of materials, and even cause structural damage. Expansion device will be provided with a water stop, for quickly draining rainwater.
[0003] The Chinese patent with application number 202211086938.0 discloses a replaceable dustproof expansion device for road and bridge construction, which includes two bearing assemblies. The ends of the two bearing assemblies close to each other are connected with dustproof plates and waterproof strips, respectively. The dustproof plates are located at the ends of the waterproof strips close to the bridge deck. The ends of the two bearing assemblies away from each other are connected with anchoring pieces. The product has a two-layer structure of dustproof and waterproof, in which the upper part uses a shielding plate for dustproof, and the lower part uses a rubber strip for waterproof. However, this replaceable dustproof expansion device for road and bridge construction still has the following problems in use:
[0004] 1. Since the two ends of the waterproof strip are installed on the bearing assembly by insertion, a large amount of rainwater will flow through the waterproof strip in summer, increasing the weight of the waterproof strip and causing it to fall off. In addition, sand and stones in the water may get stuck in the gap between the waterproof strip and the bearing assembly during the flow of rainwater, affecting the normal use of the waterproof strip.
[0005] 2. If the rainwater cannot be drained in time when it is too heavy, it will accumulate on the bridge deck, affecting driving.
[0006] Therefore, it is necessary to provide a bridge expansion assembly with stable waterproof structure to solve the above problems. CONTENT OF THE UTILITY MODEL
[0007] To solve the above problems, the utility model provides a bridge expansion assembly with stable waterproof structure, which increases the effect of resisting rainwater impact on the road surface and improves the stability of the water stop strip to prevent loosening.
[0008] The utility model discloses a specific technical scheme to achieve the above purpose:
[0009] The utility model provides a bridge expansion joint assembly with stable waterproof structure, including the section steel connected on the bridge, is equipped with the water stop between two adjacent the section steel, the face of two adjacent the section steel is provided with the extension, the top of extension is connected with the vertical plate, the water stop includes the water storage part and the bending part at the both ends of water storage part, the bending part is inverted U shape, the bending part is overlapped on the top of vertical plate,
[0010] The top of bending part is equipped with the lock catch, the shape of lock catch corresponds with the bending part, the both ends of lock catch are provided with the turn -over part, the side of section steel towards water stop is equipped with the cavity of containing turn -over part,
[0011] The top of the face of two adjacent the section steel is provided with the support, the lower side of support is equipped with the support plate connected on the side wall of section steel, the shock pad is equipped between support plate and support, the both sides of shock pad are provided with the downward outer fender, the top of one end of support plate at the bottom of dustproof plate is provided with the inner fender, the flow groove is provided on support plate, the end of flow groove close to the middle position of water stop is equipped with the water inlet hole of penetrating support plate.
[0012] Preferably, the top of the shock pad is connected with the dustproof plate.
[0013] Preferably, a plurality of flow grooves are provided with a flow collection groove.
[0014] Preferably, the shock pad and the dustproof plate are provided with equally spaced water flow grooves on both sides.
[0015] Preferably, the bottom of the section steel at both ends is connected with a displacement box, and the bottom of the section steel in the middle is connected with a cross beam, which is slidingly connected in the displacement box.
[0016] Preferably, an anchoring plate is connected to the section steel at both ends.
[0017] Compared with the prior art, the utility model has the beneficial effects that:
[0018] 1. By providing a water storage part and a bending part on the water stop, the water storage part increases the water storage capacity and increases the water discharge capacity to cope with larger rainwater impact. The bending part is sleeved on the vertical plate to improve the tensile strength of the water stop. The lock catch at the top increases the stability and prevents loosening due to rainwater impact.
[0019] 2. The flow groove and water inlet hole structure are provided on the support plate to guide the rainwater to the middle position of the water stop, avoid the particles in the rainwater from blocking the gap between the water stop and the section steel, and improve the convenience of replacing the water stop. BRIEF DESCRIPTION OF DRAWINGS
[0020] Figure 1 Fig. 2 is a schematic view of the structure of the steel and the water stop strip in the utility model;
[0021] Figure 2 Fig. 3 is a schematic view of the structure of the water stop strip and the lock catch in the utility model;
[0022] Figure 3 Fig. 4 is a schematic view of the flow direction of rainwater in the utility model;
[0023] Figure 4 Fig. 5 is a schematic view of the structure of the support plate and the flow groove in the utility model;
[0024] Figure 5 Fig. 6 is a schematic view of the structure of the flow groove and the converging groove in the utility model;
[0025] Figure 6 Fig. 7 is a schematic view of the structure of the steel and the displacement box in the utility model.
[0026] Reference signs:
[0027] 101, steel; 102, water stop strip; 103, extension; 104, vertical plate; 105, water storage part; 106, bending part; 107, lock catch; 108, turning part; 109, cavity; 110, support part; 111, support plate; 112, shock-absorbing plate; 113, outer baffle; 114, inner baffle; 115, flow groove; 116, water inlet; 117, dustproof plate; 118, converging groove; 119, water flow groove; 120, displacement box; 121, cross beam; 122, anchoring plate. DETAILED DESCRIPTION
[0028] 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 the other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.
[0029] Please refer to Figures 1-6The utility model provides a bridge expansion joint assembly with stable waterproof structure, including section steel 101 connected on bridge, specifically, section steel 101 includes middle section steel 101 and side beam section steel 101, side beam section steel 101 is connected on the bridge of both ends, when the gap between two bridges is too big, will set up middle section steel 101, to play the supporting role, the water stop 102 is equipped between adjacent two section steel 101, and the water stop 102 has the effect of water guide, is used for guiding the rainwater falling to both sides, avoids the rainwater on the road surface to accumulate, the facing of adjacent two section steel 101 is provided with extension 103, the top of extension 103 is connected with vertical plate 104, the water stop 102 includes water storage part 105 and the bending part 106 at both ends of water storage part 105, and the bending part 106 is sleeved on the top of vertical plate 104, and the tail end is located in the gap between vertical plate 104 and section steel 101, the bending part 106 is inverted U shape, the bending part 106 is overlapped on the top of vertical plate 104, and there is a certain distance between water storage part 105 and bending part 106, for increasing the capacity of water storage part 105, to cope with greater rainwater impact;
[0030] The top of bending part 106 is sleeved with lock catch 107, and the lock catch 107 is used to press the bending part 106 on vertical plate 104, the shape of lock catch 107 corresponds with bending part 106, both ends of lock catch 107 are provided with turn -over portion 108, and the turn -over portion 108 is provided in the direction away from the opening of lock catch 107, the side of section steel 101 towards water stop 102 is provided with cavity 109 containing turn -over portion 108, specifically, lock catch 107 is fixed on the top of vertical plate 104 through turn -over portion 108, when the rainwater is too big, the water stop 102 will be subjected to the pulling force downward, when the weight is too big, will make lock catch 107 produce slack, thereby appears the situation of loosening, and the turn -over portion 108 in cavity 109 can stabilize lock catch 107, so that it will not produce slack;
[0031] The top of the side of the two adjacent profiled steel 101 is provided with a support part 110, the top of the support part 110 is used for the movement of the vehicle, the top of the support part 110 is provided with anti-skid stripes, and is also provided with a chamfer, which is used for the stable movement of the vehicle. The lower side of the support part 110 is provided with a support plate 111 connected to the side wall of the profiled steel 101. The support plate 111 and the support part 110 are provided with a damping plate 112 therebetween. The damping plate 112 is made of rubber and has a damping effect. The two sides of the damping plate 112 are provided with downward outer flanges 113. The top of one end of the support plate 111 located at the bottom of the dustproof plate 117 is provided with an inner flange 114. The outer flange 113 and the inner flange 114 cooperate with each other to limit the horizontal position of the damping plate 112 and prevent the damping plate 112 from moving excessively to one end. The support plate 111 is provided with flow grooves 115. The flow grooves 115 are strip-shaped. Regardless of the position of the damping plate 112, the flow grooves 115 can guide rainwater to the water drain hole 116. The flow grooves 115 are provided with a water drain hole 116 penetrating through the support plate 111 at one end near the middle position of the water stop strip 102. Referring to Figure 3 , the water drain hole 116 can guide rainwater to the middle position of the water storage part 105, which can effectively prevent sand and stones in the rain from falling on the top of the lock catch 107. When the sand and stones fall on the connection between the lock catch 107 and the profiled steel 101, the friction between the water stop strip 102 and the lock catch 107 when pulled out from both sides is increased, which further increases the difficulty of replacement.
[0032] Specifically, referring to Figure 4 and Figure 5 , the top of the damping plate 112 is connected with a dustproof plate 117. The dustproof plate 117 has the effect of preventing foreign matters such as sand from entering.
[0033] Specifically, referring to Figure 5 , a plurality of flow grooves 115 are provided with a flow collecting groove 118. The flow collecting groove 118 connects a plurality of flow grooves 115 together. When the water amount at a certain position is too large, the rainwater can be distributed to other flow grooves 115.
[0034] Specifically, referring to Figure 5 , equal-interval water flow grooves 119 are provided on the two sides of the damping plate 112 and the dustproof plate 117. The positions of the water flow grooves 119 correspond to the positions of the flow grooves 115 and are located on the same vertical plane, which is used for better guiding rainwater to the flow grooves 115.
[0035] Specifically, referring to Figure 6 , displacement boxes 120 are connected to the bottoms of the profiled steels 101 at both ends. A cross beam 121 is connected to the bottom of the profiled steel 101 in the middle. The cross beam 121 plays a supporting role. The cross beam 121 is slidingly connected in the displacement box 120.
[0036] Specifically, referring toFigure 1 and Figure 6 The anchor plates 122 are used to fix the profile steel 101 in the bridge and are connected with the embedded steel bars in the bridge.
[0037] In this embodiment, the profile steel 101 is connected to the bridges at two ends, the dustproof plate 117 and the shock-absorbing plate 112 between the profile steel 101 play the roles of shock absorption and foreign matter blocking, the waterstop 102 at the bottom plays the role of water guide and is used to guide the rainwater away, the lock buckle 107 is sleeved on the top of the bent part 106 and is used to keep the waterstop 102 stable, when the waterstop 102 needs to be replaced, the lock buckle 107 is first pulled out from both sides, then the waterstop 102 is pulled out from both sides, then the new waterstop 102 is sent in, and finally the lock buckle 107 is reset.
[0038] The above embodiment is only a preferred embodiment of the utility model, and cannot be used to limit the range of the utility model protection, and any non-substantial change and replacement made by the person skilled in the art on the basis of the utility model belongs to the range of the utility model protection.
Claims
1. A bridge expansion joint having a stable waterproofing structure, characterized by: The utility model provides a bridge water stop, including the section steel (101) connected on the bridge, is equipped with the water stop (102) between two adjacent the section steel (101), and the extension (103) is provided to the face of two adjacent the section steel (101) and faces each other, the top of extension (103) is connected with vertical board (104), the water stop (102) includes the water storage part (105) and the bending part (106) at the both ends of water storage part (105), the bending part (106) is inverted U shape, and the bending part (106) is overlapped on the top of vertical board (104); The top of bending part (106) is equipped with the lock (107), the shape of lock (107) corresponds with bending part (106), and the both ends of lock (107) are provided with the turn -up portion (108), and the side of section steel (101) towards water stop (102) is provided with the cavity (109) of accommodating turn -up portion (108); The top of two adjacent the section steel (101) and faces each other is provided with the support part (110), and the lower side of support part (110) is equipped with the support plate (111) connected on the side wall of section steel (101), and the shock attenuation board (112) is arranged between support plate (111) and support part (110), and the both sides of shock attenuation board (112) are provided with the downward outer flange (113), and the top of one end of support plate (111) at the bottom of dustproof plate (117) is provided with the inner flange (114), and the flow groove (115) is arranged on support plate (111), and the water inlet hole (116) is arranged on one end of flow groove (115) near the middle position of water stop (102) and penetrates support plate (111).
2. The bridge expansion joint with stable waterproof structure according to claim 1, characterized in that: The top of shock attenuation board (112) is connected with dustproof plate (117).
3. The bridge expansion joint with stable waterproof structure according to claim 2, characterized in that: The flow groove (115) is arranged between the flow groove (115) and the flow groove (115).
4. The bridge expansion joint with stable waterproof structure according to claim 3, characterized in that: The water flow groove (119) is arranged on the both sides of shock attenuation board (112) and dustproof plate (117) at equal intervals.
5. The bridge expansion joint with stable waterproof structure according to claim 1, characterized in that: The displacement box (120) is connected on the bottom of section steel (101) at both ends, and the crossbeam (121) is connected on the bottom of section steel (101) in the middle, and the crossbeam (121) is slidably connected in the displacement box (120).
6. The bridge expansion joint with stable waterproof structure according to claim 1, characterized in that: The anchor plate (122) is connected on the section steel (101) at both ends.
Citation Information
Patent Citations
Replaceable dustproof telescopic device for road and bridge construction
CN115262378A