Bridge special-purpose hazardous chemical product guiding and collecting device

Abstract

This utility model discloses a special hazardous chemical diversion and collection device for bridges, belonging to the field of bridge sewage technology. It includes a liquid collection mechanism and a liquid guiding mechanism. The liquid collection mechanism is located below the expansion joint and includes a filter belt, a collection belt, and a first drain pipe. The filter belt is installed at the waterstop installation position of the expansion joint and has filter holes. The collection belt is located at the bottom of the expansion joint and extends laterally along the bridge. The collection belt is connected to the bridge's main drainage pipe via the first drain pipe. The liquid guiding mechanism is located at the junction of the concrete base layer and the asphalt permeable layer of the expansion joint. It includes a liquid guiding trough unit and a second drain pipe. The liquid guiding trough unit is connected to the asphalt permeable layer and extends laterally along the bridge, connecting to the bridge's branch drainage pipe via the second drain pipe. This utility model solves the water pollution problem caused by leakage at the expansion joint and simultaneously quickly discharges hazardous chemicals accumulated at the junction into the branch drainage pipe, thus protecting the asphalt pavement.

Description

Technical Field

[0001] This utility model relates to the field of bridge sewage discharge technology, and in particular to a special hazardous chemical diversion and collection device for bridges. Background Technology

[0002] When constructing bridges spanning water sources, environmental protection must be given top priority, especially in response to hazardous chemical leaks from transport vehicles on bridges. Specialized hazardous chemical drainage devices should be integrated with existing bridge runoff drainage systems to collect and treat leaked chemicals. For example, CN222948818U discloses a hazardous chemical drainage device for bridge runoff in a water source protection area, comprising a drainage structure, an emergency water storage structure, and a water guiding structure located on both sides of the bridge. The water guiding structure includes a main drainage pipe, multiple branch drainage pipes, and multiple drainage holes on the bridge deck. Each branch drainage pipe is connected to any drainage hole, and each branch drainage pipe is connected to the main drainage pipe. The end of the main drainage pipe is connected to the drainage structure or the emergency water storage structure via a control well. In the event of a hazardous chemical leak, the control well disconnects from the drainage structure to collect the hazardous chemicals, which are then discharged into the emergency water storage structure.

[0003] However, the aforementioned hazardous chemical drainage system only considers the collection of hazardous chemicals on the bridge deck, and does not consider the collection of hazardous chemicals at expansion joints and at the junction of the concrete layer and the asphalt permeable layer in the expansion joint installation area. Since traditional expansion joints are not drainage-friendly, when hazardous chemicals leak at the expansion joints, due to the longitudinal slope, the hazardous chemicals will accumulate at the expansion joints and at the junction of the concrete base layer and the asphalt permeable layer. The accumulation of hazardous chemicals at the junction cannot be effectively discharged, which will cause corrosion and cracking of the asphalt. In addition, the waterstop in the traditional expansion joint is located near the opening of the expansion joint. The waterstop is prone to accumulating mud and sand, and during long-term traffic, the waterstop will wear down or even leak. As a result, the leaked hazardous chemicals will seep along the expansion joint into the beams, piers and water sources, causing environmental pollution. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a bridge-specific hazardous chemical diversion and collection device.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A bridge-specific hazardous chemical diversion and collection device includes a liquid collection mechanism and a liquid guiding mechanism. The liquid collection mechanism is located below the expansion joint and includes a filter belt, a collection belt, and a first drain pipe. The filter belt is installed at the waterstop installation position of the expansion joint and has filter holes. The collection belt is located at the bottom of the expansion joint and extends laterally along the bridge. The collection belt has a drain section, which is connected to the main drainage pipe of the bridge via the first drain pipe. The liquid guiding mechanism is located at the junction of the concrete base layer and the asphalt permeable layer of the expansion joint and includes a liquid guiding channel unit and a second drain pipe. The liquid guiding channel unit is located below the concrete base layer of the expansion joint on the side facing the asphalt permeable layer and is connected to the asphalt permeable layer. The liquid guiding channel unit extends laterally along the bridge and is connected to the bridge's drainage branch pipe via the second drain pipe. By installing a liquid collection mechanism below the expansion joint, the expansion joint is given a certain degree of drainage. Hazardous chemicals discharged from the expansion joint are discharged into the main drainage pipe via a liquid collection belt and a first drain pipe, thereby solving the water pollution problem caused by leakage from the expansion joint. By installing a liquid guiding mechanism at the junction of the concrete base layer and the asphalt penetration layer of the expansion joint, the hazardous chemicals accumulated at the junction are introduced into the liquid guiding trough unit and quickly discharged into the drainage branch pipe, thereby protecting the asphalt pavement.

[0006] The two butt joint plates of the expansion joint extend vertically to form a connecting part, and the liquid collection belt has fitting parts formed on both sides. The connecting part has a snap-fit ​​groove that mates with the fitting parts.

[0007] The two connecting plates of the expansion joint have upturned ends, which are installed inside the anti-collision wall of the bridge. The filter belt inside the upturned ends has no filter hole structure.

[0008] Both ends of the liquid collection band extend into the raised head, and a drainage hose serving as the drainage section is connected at the lowest point of the liquid collection band. The drainage hose is inserted into the first drainage pipe.

[0009] The liquid collection belt has a U-shaped cross-section, and the connecting plate on the outside of the snap-fit ​​groove is formed with a guide surface that bends toward the inside of the liquid collection belt.

[0010] The liquid guiding channel unit includes a square channel steel embedded under the concrete base layer of the expansion joint, and the square channel steel has water passage holes on the side facing the asphalt penetration layer.

[0011] The height of the lower groove surface of the square channel steel is lower than the bottom height of the asphalt penetration layer.

[0012] The second drain pipe is installed inside the bridge body base, with its upper end extending upward to the bottom of the square channel steel. A drain hole is provided at the bottom of the square channel steel, and a short connecting pipe for inserting into the second drain pipe is fixed on the outside of the drain hole.

[0013] The water passages are circular through holes or grid-like through holes arranged in an equally spaced array.

[0014] This utility model has the following beneficial effects: By setting a liquid collection mechanism below the expansion joint, the expansion joint has a certain drainage capacity, and the hazardous chemicals discharged from the expansion joint are discharged into the main drainage pipe through the liquid collection belt and the first drain pipe, thereby solving the water pollution problem caused by leakage of the expansion joint; by setting a liquid guiding mechanism at the junction of the concrete base layer and the asphalt penetration layer of the expansion joint, the hazardous chemicals accumulated at the junction are introduced into the liquid guiding tank unit and quickly discharged into the drainage branch pipe, thereby protecting the asphalt pavement. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a cross-sectional schematic diagram of the present invention; Figure 2 This is a partial schematic diagram of the liquid collection mechanism of this utility model installed on a bridge; Figure 3 This is a partial schematic diagram of the liquid guiding mechanism of this utility model installed on a bridge; Figure 4 This is a partial structural schematic diagram of the square channel steel in this utility model; Figure 5 This is a cross-sectional schematic diagram of the liquid collection mechanism in this utility model.

[0017] 1. Expansion joint; 101. Butt joint plate; 102. Snap-fit ​​groove; 103. Guide surface; 104. Upturned head; 2. Expansion joint concrete base layer; 3. Asphalt penetration layer; 4. Filter belt; 401. Filter hole; 5. Collection belt; 501. Fitting part; 502. Drain hose; 6. First drain pipe; 7. Main drainage pipe; 8. Guide channel unit; 801. Square channel steel; 802. Water passage hole; 803. Drain hole; 804. Short pipe; 9. Second drain pipe; 10. Drain hole; 11. Drainage branch pipe; 12. Anti-collision wall. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0019] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0020] In the description of this utility model, it should be understood that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the utility model product is in use, or the orientation or positional relationship commonly understood by those skilled in the art. They are only used to facilitate the description of this utility model and to simplify the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0021] like Figure 1As shown, this utility model provides a bridge-specific hazardous chemical diversion and collection device, which is used in conjunction with existing bridge runoff hazardous chemical drainage devices to ensure the hazardous chemical discharge capacity at the junction of expansion joint 1 and the concrete base layer 2 and asphalt permeable layer 3. It includes a collection mechanism and a diversion mechanism. The collection mechanism is located below the expansion joint 1 and includes a filter belt 4, a collection belt 5, and a first drain pipe 6. The filter belt 4 is installed at the location of the waterstop in the expansion joint 1 and has filter holes 401. The collection belt is located at the bottom of the expansion joint 1 and extends laterally along the bridge. The collection belt has a drain section, which is connected to the main drainage pipe 7 of the bridge via the first drain pipe 6. By replacing the original waterstop of the expansion joint 1 with the filter belt 4 with filter holes 401, the expansion joint 1 gains a certain drainage capacity. Hazardous chemicals flowing into the expansion joint 1 due to the bridge's longitudinal slope can flow through the filter belt 4 to the collection belt below. The liquid flows from the expansion joint 1 through the first drain pipe 6 into the main drainage pipe 7, and finally enters the emergency water storage structure under the control of the control well. This avoids water pollution caused by leakage from the expansion joint 1's waterstop. The filter belt 4 is located at the opening of the expansion joint 1, which can still block road mud and sand, indirectly protecting the collection belt 5 below. The liquid guiding mechanism is located at the junction of the expansion joint concrete base 2 and the asphalt permeable layer 3, including a liquid guiding channel unit 8 and a second drain pipe 9. The liquid guiding channel unit 8 is set below the expansion joint concrete base 2 on the side facing the asphalt permeable layer 3 and is connected to the asphalt permeable layer 3. The liquid guiding channel unit 8 extends laterally along the bridge and is connected to the bridge's drainage branch pipe 11 through the second drain pipe 9. The liquid guiding channel unit 8 expands the sewage discharge capacity at the junction of the expansion joint concrete base 2 and the asphalt permeable layer 3, and quickly introduces the hazardous chemicals accumulated at the junction into the drainage branch pipe 11 through the liquid guiding channel unit 8, thereby protecting the asphalt pavement.

[0022] like Figure 5 As shown, in a further preferred embodiment, the two connecting plates 101 of the expansion joint 1 extend vertically to form a connecting portion, and the liquid collection belt 5 has fitting portions 501 formed on both sides. The connecting portion has a snap-fit ​​groove 102 that cooperates with the fitting portion 501. The fitting method of the fitting portion 501 and the snap-fit ​​groove 102 is the same as the installation method of the existing waterstop in the expansion joint 1. The liquid collection belt 5 is directly installed on the connecting plate 101 of the expansion joint 1, which can ensure that the hazardous chemicals flowing down from the filter belt 4 are always located in the expansion joint 1 and do not come into contact with the bridge body and the beam below, thereby effectively avoiding the risk of secondary leakage. In a further preferred embodiment, the cross-section of the liquid collection belt 5 is U-shaped, and the connecting plate 101 outside the snap-fit ​​groove 102 has a guide surface 103 that bends toward the inside of the liquid collection belt 5, which is used to guide the hazardous chemicals that seep in from the side of the filter belt 4 to the liquid collection belt 5. Preferably, the filter belt 4 and the liquid collection belt 5 are both made of the same rubber material as the waterstop in the prior art.

[0023] The locking groove 102 has the same inclination as the cross slope of the bridge, generally 1.5-3.0°, so that the collection belt 5 forms the lowest point at the end, facilitating sewage discharge. More preferably, such as... Figure 2 As shown, the two connecting plates 101 of the expansion joint 1 have upturned heads 104 at their ends. The upturned heads 104 are installed inside the anti-collision wall 12 of the bridge. The filter belt 4 inside the upturned head 104 has no filter holes 401. The two ends of the collection belt 5 extend into the upturned heads 104. The lowest position of the collection belt 5 is connected to a drainage hose 502, which serves as the drainage section. The drainage hose 502 is inserted into the first drainage pipe 6. Upturned heads 104 are formed at both ends of the expansion joint 1, and the upturned heads 104 are formed at the ends of the expansion joint 1. 04. Install rubber strips without filter holes 401 to waterproof both ends of expansion joint 1 to prevent hazardous chemicals from leaking onto the beam from both sides. The length and angle of the raised head 104 are designed according to the different requirements of the bridge. The end of the liquid collection strip 5 extends into the raised head 104, thereby matching the inclination of the snap-fit ​​groove 102, so that the lowest point of the entire liquid collection strip 5 is located at the corresponding position of the lowest point of the raised head 104. The hazardous chemicals in the liquid collection tank are discharged into the dripping drain pipe through the drain hose 502 here.

[0024] like Figure 3 As shown, the liquid guiding channel unit 8 includes a square channel steel 801 embedded below the expansion joint concrete base layer 2. This square channel steel 801 extends laterally along the bridge to a position at the same horizontal level as the drainage holes 10 on the bridge deck, to maximize the formation of a fluid channel with a width similar to the asphalt permeation layer 3. The square channel steel 801 has water passage holes 802 on the side facing the asphalt permeation layer 3. Specifically, as shown... Figure 4 As shown, the water passage holes 802 are circular through holes arranged in an equally spaced array. In other embodiments, the water passage holes 802 can also be configured as grid-shaped through holes. The interior of the square channel steel 801 forms a drainage chamber as a fluid channel, allowing the hazardous chemicals that accumulate at the junction to flow into the square channel steel 801, thereby increasing its drainage speed.

[0025] Preferably, the second drainage pipe 9 is installed through the concrete base 2 of the bridge body, with its upper end extending upwards to the bottom of the square channel steel 801, and its lower end located below the bridge and connected to the drainage branch pipe 11, as shown below. Figure 4 As shown, the bottom of the square channel steel 801 is provided with a drain hole 803, and a short connecting pipe 804 for insertion into the second drain pipe 9 is fixed on the outside of the drain hole 803.

[0026] Further preferably, the lower groove surface height of the square channel steel 801 is lower than the bottom layer height of the asphalt permeable layer 3, so as to ensure that the hazardous chemicals at the joint can be effectively channeled into the directional channel steel. In order to make the hazardous chemicals in the square channel steel 801 flow quickly to the end, the square channel steel 801 has the same inclination as the cross slope of the bridge. Similarly, the inclination is 1.5-3.0°. In this embodiment, the first drain pipe 6 and the second drain pipe 9 are both PVC pipes. When installing the square channel steel 801, before pouring concrete for the expansion joint 1, the square channel steel 801 can be laid at the junction of the asphalt permeable layer 3. Its bottom short pipe 804 is inserted into the second drain pipe 9 that has been installed through the bridge body. The middle position can be supported by welding steel bars. After the expansion joint 1 is grouted and solidified, the square channel steel installation is completed.

[0027] It is worth noting that in this technical solution, since the main drainage pipe 7, drainage hole 10 and drainage branch pipe 11 in the existing hazardous chemical drainage device are arranged in pairs on both sides of the bridge, the first drain pipe 6, the second drain pipe 9, the drain hose 502 at the bottom of the collection belt 5 and the short pipe 804 at the bottom of the square channel steel 801 in this device are all set to be two of each.

[0028] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A bridge-specific hazardous chemical diversion and collection device, characterized in that, The system includes a liquid collection mechanism and a liquid guiding mechanism. The liquid collection mechanism is located below the expansion joint and includes a filter belt, a collection belt, and a first drain pipe. The filter belt is installed at the waterstop installation position of the expansion joint and has filter holes. The collection belt is located at the bottom of the expansion joint and extends laterally along the bridge. The collection belt has a drain section, which is connected to the main drainage pipe of the bridge via the first drain pipe. The liquid guiding mechanism is located at the junction of the concrete base layer and the asphalt permeable layer of the expansion joint and includes a liquid guiding groove unit and a second drain pipe. The liquid guiding groove unit is located below the concrete base layer of the expansion joint on the side facing the asphalt permeable layer and is connected to the asphalt permeable layer. The liquid guiding groove unit extends laterally along the bridge and is connected to the bridge's drainage branch pipe via the second drain pipe.

2. The bridge-specific hazardous chemical diversion and collection device according to claim 1, characterized in that, The two butt joint plates of the expansion joint extend vertically to form a connecting part, and the liquid collection belt has fitting parts formed on both sides. The connecting part has a snap-fit ​​groove that mates with the fitting parts.

3. The bridge-specific hazardous chemical diversion and collection device according to claim 1 or 2, characterized in that, The two connecting plates of the expansion joint have upturned ends, which are installed inside the anti-collision wall of the bridge. The filter belt inside the upturned ends has no filter hole structure.

4. The bridge-specific hazardous chemical diversion and collection device according to claim 3, characterized in that, Both ends of the liquid collection band extend into the upturned head, and a drainage hose serving as the drainage section is connected at the lowest point of the liquid collection band. The drainage hose is inserted into the first drainage pipe.

5. The bridge-specific hazardous chemical diversion and collection device according to claim 2, characterized in that, The liquid collection belt has a U-shaped cross-section, and the connecting plate on the outside of the snap-fit ​​groove is formed with a guide surface that bends toward the inside of the liquid collection belt.

6. The bridge-specific hazardous chemical diversion and collection device according to claim 1, characterized in that, The liquid guiding channel unit includes a square channel steel embedded under the concrete base layer of the expansion joint, and the square channel steel has water passage holes on the side facing the asphalt penetration layer.

7. The bridge-specific hazardous chemical diversion and collection device according to claim 6, characterized in that, The height of the lower groove surface of the square channel steel is lower than the bottom height of the asphalt penetration layer.

8. The bridge-specific hazardous chemical diversion and collection device according to claim 6 or 7, characterized in that, The second drain pipe is installed inside the bridge body base, with its upper end extending upward to the bottom of the square channel steel. A drain hole is provided at the bottom of the square channel steel, and a short connecting pipe for inserting into the second drain pipe is fixed on the outside of the drain hole.

9. The bridge-specific hazardous chemical diversion and collection device according to claim 6, characterized in that, The water passages are circular through holes or grid-like through holes arranged in an equally spaced array.

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