Continuous drainage ditch on edge of bridge floor
By designing the continuous drainage ditch on the edge of the bridge deck, the concrete drainage ditch body and corrosion-resistant connecting structure formed integrally with the flange plates are solved, and the problems of bridge drainage facilities are not able to continuously drain, poor durability and inconvenient maintenance are achieved, and the continuous drainage and environmental safety of the bridge are improved.
Patent Information
- Application Number
- CN202420817408.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-19
- Publication Date
- 2025-03-28
- Estimated Expiration
- 2034-04-19
AI Technical Summary
The existing bridge drainage facilities cannot continuously drain and drain water, have poor durability and are inconvenient to maintain during operation, and there are problems such as corrosion, leakage and maintenance.
A continuous drainage ditch on the edge of the bridge deck is designed, and a concrete drainage ditch body and corrosion-resistant connecting structure formed integrally with the flange plate are used to replace the traditional longitudinal drainage pipes to achieve continuous drainage of the bridge and adapt to the deformation of the expansion joints of the bridge.
The continuous drainage of bridges is achieved, the durability and operational safety of drainage facilities are improved, maintenance costs and maintenance difficulties are reduced, and the effectiveness of environmental protection measures and environmental safety are ensured.
Smart Images
Figure CN222685256U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of highway bridge drainage, in particular to a continuous drainage ditch at the edge of a bridge deck. Background Art
[0002] Environmental protection plans for water source protection areas, important rivers, and animal and plant habitats have always been a difficult and critical issue in highway construction. After the highway is opened to traffic, the highly corrosive and highly polluting liquids produced by the dumping and leakage of hazardous chemical vehicles will have a long-term and difficult-to-recover impact on important water bodies and the ecological environment along the route. At the same time, the confluence and treatment of rainwater and sewage on the road surface on weekdays is also an important part of the entire highway management cycle. In order to solve a series of problems brought about by highway operations, builders have also made many efforts and proposed corresponding solutions. The most common of these is to set up emergency accident collection pools in the roadbed section and set up sewer pipes in the bridge section for centralized drainage, collection or treatment. In the current environmental protection plan, in order to reduce the processing pressure of highway environmental protection equipment, the main focus is on the segmented collection and treatment of rainwater and sewage in the environmental protection section. This not only meets the needs of environmental protection, but also controls construction costs. However, the current problems are also obvious: (1) The longitudinal drainage pipes of bridges are suspended on the outside of the bridges through metal fixings. Long-term exposure to the air causes corrosion and damage to the fixings, increasing the load-bearing pressure of the pipes and then breaking the pipes; (2) The drainage pipes are mostly made of PVC material, and their pipe bodies are also exposed to the air. As the seasons are subjected to high temperature, low temperature, ultraviolet rays and other cyclic effects for a long time, they become brittle and cause the pipe body to break, which in turn causes leakage, resulting in the failure of environmental protection measures, threatening the safety of the surrounding environment and reducing the overall operation quality of the highway; (3) Since the pipes are suspended on the outside of the bridge flange, special equipment is required for maintenance and replacement, which is inconvenient; (4) Affected by the expansion joint, the current drainage scheme is not continuous, that is, a sewer pipe needs to be set up at the expansion joint position to drain the water. In this way, it will pose a potential environmental safety threat to the sensitive water bodies protected under the bridge. With the increasing requirements for environmental protection, builders need to propose more reliable and safe bridge rainwater and sewage treatment schemes to further ensure the environmental safety of water source areas, important rivers, reservoirs, etc. Utility Model Content
[0003] In view of this, the purpose of the utility model is to provide a continuous drainage ditch at the edge of the bridge deck to solve the technical problems that the existing drainage facilities of the bridge cannot continuously drain water, have poor durability and are inconvenient to maintain during the operation period.
[0004] The purpose of this utility model is achieved through the following technical solutions:
[0005] A continuous drainage ditch at the edge of a bridge deck is arranged on the lower side of a road surface drainage transverse slope. It includes a plurality of transverse drainage pipes arranged under a crash barrier base and spaced apart along its length direction. It also includes a plurality of drainage ditch bodies respectively located outside each flange plate and parallel to each flange plate and integrally formed to collect drainage from each transverse drainage pipe. The inner wall of the end of the drainage ditch body is concave to form an installation groove. A plurality of screws are pre-buried in the installation groove at an annular interval. Two adjacent drainage ditch bodies are connected by a corrosion-resistant connection structure. The connection structure includes: The rubber pad, waterstop and anti-seepage layer are arranged in sequence from bottom to top, and the two ends of the rubber pad are respectively fully pasted in two opposite installation grooves by waterproof adhesive, the setting position of the waterstop is consistent with the setting position of the waterstop in the bridge expansion joint and its two ends are respectively fully spread on the rubber pads in the two installation grooves, a plurality of screws penetrate the rubber pad and the waterstop and connect the gasket and the nut, the rubber pad and the waterstop have reserved deformation and expansion amount consistent with the deformation and expansion amount of the bridge expansion joint, and the upper surface of the waterstop and its periphery are applied with an anti-seepage layer.
[0006] Furthermore, the anti-seepage layer includes a sealant layer and an asphalt layer arranged in sequence from bottom to top.
[0007] Furthermore, the inner surfaces at both ends of the water stop strip are flush with the drainage ditch body outside the installation groove.
[0008] Furthermore, the waterstop is a U-shaped GB composite rubber waterstop.
[0009] The beneficial effects of the utility model are:
[0010] The utility model discloses a continuous drainage ditch at the edge of a bridge deck, which utilizes a drainage ditch body and a connecting structure integrally formed with a flange plate to replace an existing longitudinal drainage pipe of the bridge, thereby realizing continuous drainage of the bridge. The connecting structure can adaptively deform as the expansion joint deforms, has good durability, greatly reduces the amount of maintenance during operation, and is convenient, safe and reliable to maintain.
[0011] Other advantages, objectives and features of the present invention will be described in the following description to some extent, and will be apparent to those skilled in the art based on the following examination and research, or can be taught from the practice of the present invention to some extent. The objectives and other advantages of the present invention can be achieved and obtained through the following description. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model will be further described in detail below with reference to the accompanying drawings, in which:
[0013] Figure 1 It is a cross-sectional schematic diagram of the connection structure of the utility model.
[0014] Figure 2 for Figure 1 Enlarged schematic diagram of part A in the middle.
[0015] Figure 3 for Figure 2 Enlarged schematic diagram of part B in the middle.
[0016] Figure 4 for Figure 1 Schematic diagram of the end of the middle drainage ditch.
[0017] Figure 5 This is a state diagram used in the present utility model.
[0018] In the figure: a drainage ditch body 3, a screw rod 4, a flange plate 5, a transverse drainage pipe 6, an anti-collision guardrail 7, a road surface 8, an asphalt layer 9, a sealant layer 10, and a rubber pad 11. DETAILED DESCRIPTION
[0019] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be understood that the preferred embodiments are only for illustrating the present invention, rather than for limiting the protection scope of the present invention.
[0020] like Figure 1-5 As shown, a continuous drainage ditch at the edge of a bridge deck is arranged on the lower side of the transverse slope of the road surface drainage. It includes a plurality of transverse drainage pipes 6, which are arranged under the base of the anti-collision guardrail 7 and are evenly spaced along the length direction of the base of the anti-collision guardrail 7. It also includes a plurality of sections of reinforced concrete drainage ditch bodies 3 located outside the flange plates 5, and the plurality of sections of the drainage ditch bodies 3 are respectively parallel to the plurality of sections of the flange plates 5 and are integrally formed. The plurality of sections of the drainage ditch bodies 3 collect drainage from the plurality of transverse drainage pipes 6. The inner wall of the end of each section of the drainage ditch body 3 is concave to form an installation groove. The bottom and both sides of the installation groove are respectively provided with a plurality of screws 4 whose midlines are located in the same cross-section of the installation groove. Two adjacent sections of the drainage ditch body 3 are connected by a corrosion-resistant connection structure. The connection structure includes A rubber pad 11, a waterstop 2 and an anti-seepage layer are sequentially arranged from bottom to top, wherein the anti-seepage layer includes a sealant layer 10 and an asphalt layer 9 sequentially arranged from bottom to top, both ends of the rubber pad 11 are fully adhered to the inner walls of two relatively mounting grooves by means of waterproof adhesive, the setting orientation of the waterstop 2 is consistent with the setting orientation of the waterstop 2 in the expansion joint of the bridge and its two ends are fully laid on the rubber pads 11 in the two mounting grooves, a plurality of screws 4 penetrate the rubber pad 11 and the waterstop 2 and are sequentially connected with gaskets and nuts, the rubber pad 11 and the waterstop 2 are respectively reserved with deformation and expansion amounts consistent with the deformation and expansion amounts of the expansion joint of the bridge, the inner surfaces at both ends of the waterstop 2 are flush with the drainage ditch body 3 outside the mounting groove, and an anti-seepage layer is applied to the upper surface and the periphery of the waterstop 2.
[0021] The road surface water from the road surface 8 is drained into the drainage ditch body 3 through the road surface drainage cross slope and the transverse drainage pipe 6 for collection and drainage. Such a concrete drainage ditch body 3 replaces the original drainage pipe to increase the weather resistance and safety of the entire drainage facility, and realizes continuous drainage, while also reducing the maintenance cost during the operation period.
[0022] The continuous drainage ditch construction method comprises the following steps:
[0023] During the construction of the reinforcement of the bridge superstructure, the bottom support reinforcement of the drainage ditch body 3 is installed simultaneously. The reinforcement is connected to the reinforcement of the bridge flange plate 5 and forms a whole with the flange plate 5. The specific reinforcement can be calculated and configured according to the specific size of the drainage ditch to meet the load-bearing requirements during maintenance. After the reinforcement is laid, the template is erected simultaneously for concrete pouring. During the pouring process, the drainage ditch body 3 is vibrated by small machinery to ensure that the concrete is fully poured. At the same time, in order to ensure the strength and construction quality of the drainage ditch body 3, it is recommended that the concrete grade be C30 or above. When constructing the connection structure at the expansion joint, it is necessary to reserve a separate connection structure installation groove and embed the corresponding screw 4 to reserve conditions for the later installation of the rubber pad 11 and the water stop 2. After the concrete is formed and solidified, the template is removed and the connection is cleaned. Before installing the rubber pad 11, apply waterproof adhesive. Since corrosion and durability need to be considered, the adhesive can be ATI flexible epoxy resin adhesive. Then install the rubber pad 11, which can be made of corrosion-resistant neoprene rubber sheet, and then install the waterstop 2, install a stainless steel gasket on each screw 4, and finally tighten the nut. Combined with existing material technology and market research, the waterstop 2 can use the U-shaped GB composite rubber waterstop that is currently more commonly used on the market. For those with special functional needs, it can also be customized with relevant manufacturers; the main function of the screw 4, gasket and nut is to ensure that the waterstop 2 fits the concrete structure. By reserving the deformation and expansion amount for the rubber pad 11 and the waterstop 2, the upper anti-seepage layer will not be affected by the deformation and cracking when the bridge structure is deformed by cold or hot. The screw 4 can be the commonly used M14 type. After installing the rubber pad 11, the waterstop 2 and the screw 4 nut, apply the sealant 10. The sealant 10 can use a corrosion-resistant and stable styrene-butadiene sealant or a deketoxime sealant. When applying the sealant 10, the entire water stop 2 and the peripheral part need to be applied at least twice to avoid leakage caused by insufficient application and thus affect the overall anti-seepage effect. Finally, the anti-seepage asphalt 9 is applied on the top layer. The anti-seepage asphalt 9 should be applied slowly and evenly to ensure its thickness and uniformity. At the same time, the application range can be appropriately extended to make the anti-seepage transition of the entire drainage ditch bottom natural.
[0024] Compared with the existing longitudinal drainage pipes of bridges, the continuous drainage ditch will increase the deadweight of the bridge to a certain extent, thereby increasing the initial project investment. However, from the perspective of the entire project construction and operation cycle, it has the following main advantages: on the one hand, the concrete drainage ditch body 3 and the connection structure with higher weather resistance are used to replace the conventional drainage pipes, which solves the durability problem of the drainage facilities, and the drainage ditch is constructed simultaneously during the bridge construction period, making the drainage ditch a part of the bridge, eliminating the potential threats such as the falling off caused by the hanging components, reducing the maintenance cost, and improving the operational safety of the entire drainage facility; on the other hand, by establishing a connection structure at the expansion joint of the bridge, the bridge no longer needs to set up a separate sewer pipe at the expansion joint, so as to achieve continuous drainage, and then lead the polluted water body to a farther distance from the protection target, so that the bridge can cross rivers, reservoirs and other ecologically sensitive areas without road sewage outlets, which fundamentally solves the pollution risks caused by road operation. This embodiment is realized based on the current construction technology, with convenient construction and reliable technology; the connection structure materials are selected from the commonly used corrosion-resistant materials currently on the market, with high reliability, simple construction, convenient replacement, low maintenance cost, and can be customized according to the needs of different projects, so it has strong compatibility. The entire drainage ditch is simple to build, the construction technology is mature, the later operation safety is high, and the maintenance cost is low. It is meaningful for improving the drainage system of highway bridge decks and improving the drainage quality of bridge decks, and can provide a reliable reference for other projects with similar bridge deck drainage needs.
[0025] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution, which should be included in the scope of the claims of the utility model.
Claims
1. A continuous drainage ditch at the edge of a bridge deck, arranged on the lower side of a road surface drainage transverse slope, comprising a plurality of transverse drainage pipes (6) arranged under a base of a crash barrier (7) and spaced apart along its length, characterized in that: It also includes a plurality of drainage ditch bodies (3) respectively located outside each flange plate (5) and arranged in parallel with each flange plate (5) and integrally formed to collect drainage from each transverse drainage pipe (6), the inner wall of the end of the drainage ditch body (3) being concave to form a mounting groove, a plurality of screws (4) being pre-buried in the mounting groove at annular intervals, and two adjacent drainage ditch bodies (3) being connected by a corrosion-resistant connection structure, the connection structure comprising a rubber pad (11), a water stop strip (2) and an anti-seepage layer arranged in sequence from bottom to top, the rubber pad (11 ) are respectively fully pasted in two opposite installation grooves by waterproof adhesive, the setting position of the waterstop (2) is consistent with the setting position of the waterstop in the bridge expansion joint and its two ends are respectively fully pasted on the rubber pads (11) in the two installation grooves, a plurality of screws (4) penetrate the rubber pad (11) and the waterstop (2) and connect the gasket and the nut, the rubber pad (11) and the waterstop (2) are reserved with a deformation and expansion amount consistent with the deformation and expansion amount of the bridge expansion joint, and the upper surface and the periphery of the waterstop (2) are applied with an anti-seepage layer.
2. The continuous drainage ditch at the edge of a bridge deck according to claim 1, characterized in that: The anti-seepage layer comprises a sealant layer (10) and an asphalt layer (9) which are arranged in sequence from bottom to top.
3. The continuous drainage ditch at the edge of a bridge deck according to claim 1 or 2, characterized in that: The inner surfaces at both ends of the water stop strip (2) are flush with the drainage ditch body (3) outside the installation groove.
4. The continuous drainage ditch at the edge of a bridge deck according to claim 1, characterized in that: The waterstop (2) is a U-shaped GB composite rubber waterstop.