Elastomer type railway concrete bridge beam end waterproof device
By adopting an elastic body waterproof device at the end of the railway concrete bridge, combined with the support module and the coating layer, the problem of waterproof layer damage caused by the expansion and deformation of the beam end is solved, and the bridge is durable and high safety is achieved.
Patent Information
- Application Number
- CN202422030546.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-21
- Publication Date
- 2025-06-17
- Estimated Expiration
- 2034-08-21
AI Technical Summary
In existing railway concrete bridges, the end of the beam is prone to expansion and deformation due to temperature changes and train loads, resulting in cracking and falling off of the waterproof layer, causing corrosion and water leakage of the beam body, affecting the service life and driving safety of the bridge.
An elastomeric railway concrete bridge beam end waterproof device is adopted, including a beam body, an elastomer, an interface coating layer, a surface coating layer, a base liner and a support module. The elastomer is used as the expansion joint material, combined with the support module and a coating layer, to achieve effective waterproofing and shock absorption of the beam end.
Effectively alleviate the deformation and vibration of bridges, adapt to different climate and environmental conditions, prevent bridge deformation and damage caused by temperature changes, avoid damage and fall off of waterproof layers, and greatly improve the service life and driving safety of bridges.
Smart Images
Figure CN222990566U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of railway bridge construction, in particular to a waterproof device for the beam end of an elastic-type railway concrete bridge. Background Art
[0002] With the rapid development of rail transit, as an important part of infrastructure construction, the structure and related detail treatment of railway bridges directly affect the service safety and life of railway bridges. When a train, especially a high-speed train, speeds past a railway bridge, vibrations and component deformations will occur between various components of the bridge. This requires shock absorption for the joints of railway bridges to reduce damage to components and extend the life of railway bridges.
[0003] However, in existing railway concrete bridges, due to factors such as temperature changes and train loads at the beam end, telescopic deformation is likely to occur, and the waterproof layer is prone to cracking and peeling off, resulting in beam body corrosion and water leakage problems, which will affect the service life of the bridge and the driving safety. Summary of the Utility Model
[0004] The purpose of the utility model is to provide a waterproof device for the beam end of an elastic-type railway concrete bridge, aiming to solve the technical problem that in existing railway concrete bridges, due to factors such as temperature changes and train loads at the beam end, telescopic deformation is likely to occur, and the waterproof layer is prone to cracking and peeling off, resulting in beam body corrosion and water leakage problems, which will affect the service life of the bridge and the driving safety.
[0005] To achieve the above purpose, a waterproof device for the beam end of an elastic-type railway concrete bridge adopted by the utility model includes a beam body, an elastic body, an interface coating layer, a surface coating layer, a bottom lining, and a support module. The support module is connected to the beam body and is located on the beam body. The bottom lining is connected to the support module and is located above the support module. The elastic body is connected to the bottom lining and is located above the bottom lining. The interface coating layer is arranged between the elastic body and the beam body, and the surface coating layer is arranged above the elastic body.
[0006] Among them, the support module includes a support bottom sheet and an anti-detachment support strip. The support bottom sheet is connected to the beam body and is located inside the beam body. The anti-detachment support strip is connected to the support bottom sheet and is located above the support bottom sheet. The anti-detachment support is also connected to the end face of the beam body. The bottom lining is connected to the support bottom sheet and is located above the support bottom sheet.
[0007] Among them, the support module further includes a plug-in strip. The beam body has a plug-in groove. The plug-in strip is fixedly connected to the anti-detachment support strip and is adapted to the plug-in groove.
[0008] Wherein, the bottom lining is arched, the upper surface of the elastomer is flat, and the lower surface of the elastomer is arc-shaped.
[0009] Wherein, the thickness of the elastomer is not less than 20 mm.
[0010] A waterproof device for the beam end of a railway concrete bridge of elastomer type in the utility model. A step is arranged in the beam body, and the width of the step is preferably 10 mm to 20 mm. The support module is arranged on the step, and the support module fixedly supports the bottom lining in the beam body. The elastomer is located above the bottom lining. The length of the elastomer should not be less than the inner spacing of the outermost side wall (vertical wall) of the bridge. The interface coating layer is coated between the beam body and the elastomer, and the surface coating layer is coated above the elastomer. The beam body is divided into ballastless track bridges and ballasted track bridges. In the ballastless track bridge, the upper surface of the elastomer is flush with the lowest point of the end face of the beam body. Water retaining platforms can be arranged at both ends of the elastomer. The height of the water retaining platform should not be lower than 60 mm, and the width of the convex platform should not be lower than 100 mm. In the ballasted track bridge, the elastomer and the bottom lining are located in the beam body, and a steel cover plate is arranged above the elastomer. The steel cover plate is fixed on the beam body through the steel cover plate anchoring module. In the above method, using the elastomer as the expansion joint material has excellent elastic properties, can effectively relieve the deformation and vibration of the bridge during the operation of the railway bridge, can adapt to different climate and environmental conditions, and can effectively prevent the deformation and damage of the bridge caused by temperature changes. In addition, the construction is convenient, the cast-in-place construction method is adopted, which is easy to operate and control, is suitable for bridges of different scales and types, realizes the ability to avoid damage and falling off of the waterproof layer, and greatly improves the service life and driving safety of the bridge. Description of the Drawings
[0011] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.
[0012] Figure 1 It is a schematic diagram of the elastomer type beam end of a ballastless track bridge of the present utility model without a water retaining platform.
[0013] Figure 2 It is a schematic diagram of the elastomer type beam end of a ballastless track bridge of the present utility model with a water retaining platform.
[0014] Figure 3 It is a schematic diagram of the elastomer type beam end of a ballasted track bridge of the present utility model.
[0015] 101 - Beam body, 102 - Elastomer, 103 - Interface coating layer, 104 - Surface coating layer, 105 - Bottom lining, 106 - Support bottom sheet, 107 - Anti - detachment support bar, 108 - Insertion bar, 109 - Insertion groove, 110 - Waterproof layer, 111 - Water retaining platform, 112 - Waterproof layer protection layer, 113 - Steel cover plate, 114 - Steel cover plate anchoring module. Detailed implementation manners
[0016] The embodiments of the present utility model will be described in detail below. The examples of the embodiments are shown in the drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and are intended to explain the present utility model, and should not be construed as a limitation to the present utility model.
[0017] Please refer to Figures 1 to 3 , the present utility model provides a waterproof device for the beam end of a railway concrete bridge of elastomer 102 type, including a beam body 101, an elastomer 102, an interface coating layer 103, a surface coating layer 104, a bottom lining 105 and a support module. The support module is connected to the beam body 101 and is located on the beam body 101. The bottom lining 105 is connected to the support module and is located above the support module. The elastomer 102 is connected to the bottom lining 105 and is located above the bottom lining 105. The interface coating layer 103 is disposed between the elastomer 102 and the beam body 101. The surface coating layer 104 is disposed above the elastomer 102.
[0018] In this embodiment, a step is provided inside the beam body 101, and the width of the step is preferably 10 mm to 20 mm. The support module is arranged on the step, and the support module fixedly supports the bottom lining 105 inside the beam body 101. The elastomer 102 is located above the bottom lining 105. The length of the elastomer 102 should not be less than the inner spacing of the outermost side walls (vertical walls) of the bridge. The interface coating layer 103 is coated between the beam body 101 and the elastomer 102, and the surface coating layer 104 is coated above the elastomer 102. The beam body 101 is divided into ballastless track bridges and ballasted track bridges. In the ballastless track bridge, the upper surface of the elastomer 102 is flush with the lowest point of the end face of the beam body 101. Water retaining platforms 111 can be arranged at both ends of the elastomer 102. The height of the water retaining platform 111 should not be less than 60 mm, and the width of the convex platform should not be less than 100 mm. In the ballasted track bridge, the elastomer 102 and the bottom lining 105 are located inside the beam body 101, and a steel cover plate 113 is arranged above the elastomer 102. The steel cover plate 113 is fixed on the beam body 101 through a steel cover plate anchoring module 114. In the above method, using the elastomer 102 as the expansion joint material has excellent elastic properties, can effectively relieve the deformation and vibration of the bridge during the operation of the railway bridge, can adapt to different climate and environmental conditions, and can effectively prevent the deformation and damage of the bridge caused by temperature changes. In addition, the construction is convenient, adopting the in-situ casting construction method, which is easy to operate and control, is applicable to bridges of different scales and types, realizes the ability to avoid damage and peeling of the waterproof layer 110, and greatly improves the service life and driving safety of the bridge.
[0019] Further, the support module includes a support bottom plate 106 and an anti-detachment support strip 107. The support bottom plate 106 is connected to the beam body 101 and is located inside the beam body 101. The anti-detachment support strip 107 is connected to the support bottom plate 106 and is located above the support bottom plate 106. The anti-detachment support is also connected to the end face of the beam body 101. The bottom lining 105 is connected to the support bottom plate 106 and is located above the support bottom plate 106.
[0020] In this embodiment, the anti-detachment support strip 107 is connected to the beam body 101, the support bottom plate 106 is limited inside the beam body 101, and the anti-detachment support strip 107 pulls the support bottom plate 106, so that the support bottom plate 106 is fixed inside the beam body 101, which is beneficial to the fixation of the bottom lining 105 on the support bottom plate 106.
[0021] Further, the support module further includes a plug-in strip 108. The beam body 101 has a plug-in groove 109. The plug-in strip 108 is fixedly connected to the anti-detachment support strip 107 and is adapted to the plug-in groove 109.
[0022] In this embodiment, by providing the insertion slot 109 on the end face of the beam body 101, the insertion strip 108 on the anti-disengagement support strip 107 is arranged in the insertion slot 109, which can enhance the supporting effect of the support bottom sheet 106 on the bottom lining 105.
[0023] Further, the bottom lining 105 is arched, the upper surface of the elastic body 102 is flat, and the lower surface of the elastic body 102 is arcuate; the thickness of the elastic body 102 is not less than 20 mm.
[0024] The above-disclosed is only a preferred embodiment of the present utility model, and of course, it cannot be used to limit the scope of rights of the present utility model. Those of ordinary skill in the art can understand the entire or partial processes of implementing the above embodiments, and the equivalent changes made according to the claims of the present utility model still fall within the scope covered by the utility model.
Claims
1. An elastic railway concrete bridge beam end waterproof device, characterized in that: It includes a beam body, an elastomer, an interface coating layer, a surface coating layer, a base lining and a support module, wherein the support module is connected to the beam body and is located on the beam body, the base lining is connected to the support module and is located above the support module, the elastomer is connected to the base lining and is located above the base lining, the interface coating layer is arranged between the elastomer and the beam body, and the surface coating layer is arranged above the elastomer.
2. The elastic body type railway concrete bridge beam end waterproof device according to claim 1, characterized in that: The support module includes a support bottom plate and an anti-slip support strip, wherein the support bottom plate is connected to the beam body and is located inside the beam body, the anti-slip support strip is connected to the support bottom plate and is located above the support bottom plate, the anti-slip support is also connected to the end surface of the beam body, and the bottom lining is connected to the support bottom plate and is located above the support bottom plate.
3. The elastic body type railway concrete bridge beam end waterproof device as claimed in claim 2, characterized in that: The support module also includes a plug-in strip, the beam body has a plug-in slot, the plug-in strip is fixedly connected to the anti-drop support strip and is adapted to the plug-in slot.
4. The elastic body type railway concrete bridge beam end waterproof device as claimed in claim 1, characterized in that: The bottom liner is arched, the upper surface of the elastic body is a plane, and the lower surface of the elastic body is a curved surface.
5. The elastic body type railway concrete bridge beam end waterproof device as claimed in claim 4, characterized in that: The thickness of the elastic body is not less than 20 mm.