An overflow drainage device for elevated bridges

Abstract

An overflow drainage device for elevated bridges is a lateral drainage system comprising two parts: lateral drainage openings and a water collection funnel. The lateral drainage openings are formed by creating several openings at the bottom of the bridge railing, and a water-guiding trough welded from steel plates is laid inside each opening. The rear end of the water-guiding trough extends into the water collection funnel. The water collection funnel is a funnel with an inlet on its front side, including a top cover, a bottom plate, side baffles, a back plate, a front baffle, and a drainage outlet on the bottom plate. Several vertically oriented rectangular grooves are provided along the upper edge of the front baffle. Flange connecting plates are provided around the perimeter of the water collection funnel to connect with the railing. The rear end of the water-guiding trough corresponds to the shape of one of the rectangular grooves and is inserted into the groove to form an inlet channel. One water collection funnel connects with several water-guiding troughs in the lateral drainage openings to form multiple inlet channels. This invention ensures a tight connection between the water collection funnel and the lateral drainage openings, preventing rainwater leakage and corrosion of bridge components.

Description

Technical Field

[0001] This invention belongs to the technical field of bridge ancillary structure construction measures, specifically relating to an overflow drainage device for elevated bridges. Background Technology

[0002] Bridge deck drainage systems are a critical component affecting bridge durability. For existing bridges, these systems are unable to solve the problem of flooding at low points of elevated bridges during excessive rainfall, posing a significant safety hazard to vehicles traveling on the bridge. Furthermore, if overflowing water is not collected, it can easily lead to traffic accidents below the bridge, thus requiring urgent solutions. Summary of the Invention

[0003] This invention provides an overflow drainage device for elevated bridges to solve the technical problem of water accumulation and flooding at low points of elevated bridges during excessive rainfall and the impact of rainwater discharge on traffic safety, thereby improving traffic safety on and under the bridge.

[0004] The technical solution of the present invention is an overflow drainage device for an elevated bridge, characterized in that it is a lateral drainage system, which includes a lateral drainage opening and a water collection funnel.

[0005] The lateral drainage opening 1 is a plurality of lateral drainage openings opened at the bottom of the bridge railing 2, and a water guide sieve 3 welded from steel plates is laid in the lateral drainage opening, with the rear end of the water guide sieve extending into the water collection funnel.

[0006] The water collection funnel 4 is a funnel with a water inlet on the front side, including a top cover plate 41, a bottom plate 42, a side baffle 43, a back plate, a front baffle 45, and a drain outlet 46 on the bottom plate; the back plate is integrally formed by an upper back plate 441 and a lower back plate 442 below it, the inclination angle of the upper back plate 441 is the same as the inclination angle of the back of the guardrail, and the lower back plate 442 is plumb; the side baffle 43 is integrally connected with the upper side baffle and the lower side baffle below it, corresponding to the upper back plate 441 and the lower back plate, the inclination angle of the front and rear sides of the upper side baffle is the same as the inclination angle of the back of the guardrail. The surfaces are all tilted at the same angle, and the lower baffle is set with a plumb line; the two ends of the bottom plate 42 are higher than the center position, and the drain outlet is located at the center of the bottom plate, which is the lowest point of the bottom plate. The bottom plates on both sides of the drain outlet are tilted; the drain outlet is welded to the drain pipe; the front baffle 45 is placed vertically below the front side of the water collecting funnel and its bottom end and two sides are connected to the bottom plate and the side baffle, and together with the top cover plate and the side baffle, it forms a water inlet 47. The upper edge of the front baffle is provided with several vertical rectangular grooves 451; the four edges of the water collecting funnel are provided with flange connecting plates connected to the guardrail.

[0007] The water guide sieve 3 is a sieve shape with open front, rear and top ends. Its rear end 31 corresponds to a rectangular toothed groove shape and is inserted into the rectangular toothed groove 451 for fitting and connection. The rear end extends into the water collection funnel to form a water inlet channel. The front ends of the water guide sieve 3 are provided with flanged flanges on both sides and connected to the guardrail bolts.

[0008] One of the water collection funnels is connected to the water guide sieves in several of the lateral drainage holes to form multiple water inlet channels.

[0009] The aforementioned overflow drainage device for an elevated bridge is characterized in that the top wall of the lateral drainage opening is an inclined wall with the inlet end higher than the outlet end.

[0010] The beneficial effects of this invention are:

[0011] 1) This invention solves the problem of water accumulation and flooding at low points of elevated bridges during excessive rainfall by using an overflow drainage device for elevated bridges, thus ensuring the safety of vehicles traveling on the bridge.

[0012] 2) This invention uses a water collection device to centrally discharge accumulated water on the bridge, thus avoiding the impact of externally discharged rainwater on traffic safety under the bridge.

[0013] 3) The water collection funnel of this invention is tightly connected to the side drainage hole, which prevents rainwater from leaking out and corroding bridge components.

[0014] 4) The present invention has a water collection funnel that can receive drainage from multiple lateral drainage holes, resulting in high drainage efficiency. Attached Figure Description

[0015] Figure 1 This is a side view of the water collection funnel opening of the present invention;

[0016] Figure 2 for Figure 1 Schematic diagram of AA section;

[0017] Figure 3 for Figure 1 Schematic diagram of BB cross section;

[0018] Figure 4 This is a schematic diagram of the bottom surface of the water collection funnel;

[0019] Figure 5 A three-dimensional schematic diagram of the water collection funnel;

[0020] Figure 6 Schematic diagram of water collection funnel installation;

[0021] Figure 7 This is a schematic diagram showing the connection between the upper edge of the front baffle and the rear end of the water guide hopper.

[0022] Figure 8A schematic diagram showing the connection between a water collection funnel and three side drainage openings with water guide scoops.

[0023] Figure 9 for Figure 8 A frontal view of the three lateral drainage openings.

[0024] Explanation of the attached drawing numbers:

[0025] 1. Side drainage opening; 2. Bridge railing; 3. Water guide hopper; 4. Rear end; 5. Water collection funnel; 6. Top cover plate; 7. Bottom plate; 8. Side baffle; 9. Back plate; 10. Upper back plate; 11. Lower back plate; 12. Front baffle; 13. Rectangular toothed groove; 14. Drainage outlet; 15. Inlet; 16. Stiffening rib; 17. Funnel opening flange frame; 18. Frame; 19. Hinge; 20. Connecting bolts. Detailed Implementation

[0026] The specific embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0027] See Figure 1-6 As shown, the present invention provides an overflow drainage device for an elevated bridge, which is a lateral drainage system. The lateral drainage system includes two parts: a lateral drainage opening 1 and a water collection funnel 4.

[0028] See Figure 6 As shown, the lateral drainage opening 1 is a plurality of lateral drainage openings opened at the bottom of the bridge railing 2, and a water guide sieve 3 welded from steel plates is laid in the lateral drainage opening, with the rear end 31 of the water guide sieve extending into the water collection funnel.

[0029] See Figure 5 As shown, the water collection funnel 4 is a funnel with a water inlet on the front side, including a top cover plate 41, a bottom plate 42, a side baffle 43, a back plate, a front baffle 45, and a drain outlet 46 on the bottom plate; the back plate is integrally formed by an upper back plate 441 and a lower back plate 442 below it, the inclination angle of the upper back plate 441 is the same as the inclination angle of the back of the guardrail, and the lower back plate 442 is set with a plumb line; the side baffle 43 is integrally connected with the upper side baffle and the lower side baffle below it, corresponding to the upper back plate 441 and the lower back plate, and the inclination angle of the front and rear sides of the upper side baffle is the same as the inclination angle of the back of the guardrail. The surfaces are all tilted at the same angle, and the lower baffle is set with a plumb line. The two ends of the bottom plate 42 are higher than the center position, and the drain outlet 46 is located at the center of the bottom plate, which is the lowest point of the bottom plate. The bottom plates on both sides of the drain outlet are tilted. The drain outlet is welded to the drain pipe. The front baffle 45 is placed vertically below the front side of the water collecting funnel, and its bottom end and two sides are connected to the bottom plate and the side baffle. It forms a water inlet 47 with the top cover plate and the side baffle. The upper edge of the front baffle is provided with a number of vertical rectangular grooves 451. The water collecting funnel is provided with flange connecting plates around its perimeter and connected to the guardrail.

[0030] See Figure 7 As shown, the water guide hopper 3 is a hopper shape with open front, rear and top ends, and is formed by welding steel plates on both sides and bottom. Its rear end 31 corresponds to a rectangular toothed groove shape and is inserted into the rectangular toothed groove 451 for fitting and connection. The rear end 31 extends into the water collection funnel to form a water inlet channel. The front ends of the water guide hopper 3 are provided with flanged flanges on both sides and connected to the guardrail bolts.

[0031] See Figure 8 As shown, one of the water collection funnels is connected to the water guide sieves in several of the lateral drainage holes to form multiple water inlet channels.

[0032] The aforementioned overpass overflow drainage device, wherein the top wall of the lateral drainage opening is an inclined wall with the inlet end higher than the outlet end.

[0033] This invention employs a lateral drainage method. The lateral drainage opening is located at the lowest point of the concave curve of a long bridge deck, within the guardrail. A water sieve welded from steel plates is laid inside the opening. The water sieve extends a certain length into the water collection funnel, ensuring that all water on the bridge surface is diverted into the funnel, thus preventing leakage and dripping problems.

[0034] The frame of the water collection funnel is made of shaped steel, and the other sides of the funnel are sealed and welded with steel plates. The bottom of the funnel is tapered, and the bottom of the funnel is welded to a circular cross-section steel pipe as a drainage outlet.

[0035] The top, back, bottom, and sides of the water collection funnel are reinforced with stiffening ribs. The steel plate of the water collection funnel is serrated to match the water scoop. The bottom frame angle steel and stiffening ribs of the water collection funnel are arranged outwards.

[0036] The structural measures and adjustable contents of this invention are mainly in two aspects:

[0037] 1. In the specific design, the length, width, number of bolts, and thickness of the steel plate of the water collection funnel can be adjusted according to the width of the bridge deck and the span;

[0038] 2. In the specific design, the size of the water collection funnel opening and the diameter of the circular steel pipe can be adjusted according to the drainage volume.

[0039] Example

[0040] This embodiment of an elevated bridge overflow drainage device has the same overall structure as described in the above embodiments. In this embodiment, the water collection funnel 4 is equipped with a box-shaped frame, which is a frame 7 anchored by angle steel. The angle steel is anchored along the intersection edges of the top cover plate, bottom plate, side baffles, and back plate to form the box-shaped frame. Angle steel is also set along a ring of edges on the top cover plate, bottom plate, and side baffles on the inlet side to form a funnel opening flange frame 6. The funnel opening flange frame is connected to the crash barrier with bolts. The top cover plate, bottom plate, side baffles, back plate, and front baffle of the water collection funnel are welded to the box-shaped frame and reinforced with stiffening ribs 5. The angle steel and stiffening ribs of the bottom frame of the water collection funnel are arranged outwards. The top cover plate of the funnel is connected to the box-shaped frame or the funnel opening flange frame via hinges 8. The top wall of the lateral drainage opening is a downward-sloping wall with a higher inlet end and a lower outlet end, which facilitates drainage guidance. Figure 7 , 8 The diagram shows a water collection funnel connected to three side drainage openings forming multiple water inlet channels. The joints are sealed with adhesive, such as conventional adhesive, weather-resistant adhesive, or other types.

Claims

1. An overflow drainage device for elevated bridges, characterized in that, It is a lateral drainage system, which consists of two parts: a lateral drainage opening and a water collection funnel; Several lateral drainage openings (1) are opened at the bottom of the bridge railing (2), and a water guide sieve (3) welded from steel plates is laid in the lateral drainage openings, with the rear end of the water guide sieve extending into the water collection funnel. The water collection funnel (4) is a funnel with an inlet on the front side, including a top cover plate (41), a bottom plate (42), a side baffle (43), a back plate, a front baffle (45), and a drain outlet (46) on the bottom plate; the back plate is integrally formed by an upper back plate (441) and a lower back plate (442) below it, the tilt angle of the upper back plate (441) is consistent with the tilt angle of the back of the guardrail, and the lower back plate (442) is vertically set; the side baffle (43) is integrally connected by an upper baffle corresponding to the upper back plate (441) and a lower baffle corresponding to the lower back plate (442), the lower baffle The plate is located below the upper baffle. The inclination angle of the front and rear sides of the upper baffle is the same as the inclination angle of the back of the guardrail. The lower baffle is vertically installed. The two ends of the bottom plate (42) are higher than the center position. The drain outlet is located at the center of the bottom plate, which is the lowest point of the bottom plate. The bottom plates on both sides of the drain outlet are inclined. The drain outlet is welded to the drain pipe. The front baffle (45) is vertically placed below the front side of the water collection funnel and its bottom end and two sides are connected to the bottom plate and the side baffle. It forms an inlet (47) with the top cover plate and the side baffle. The upper edge of the front baffle is provided with several rectangular grooves (451) in the vertical direction. The water collection funnel is equipped with flange connecting plates that connect to the guardrail around its four edges; The water guide sieve (3) is a sieve shape with open front, rear and upper ends. Its rear end (31) corresponds to a rectangular toothed groove shape and is inserted into the rectangular toothed groove (451) for fitting and connection. The rear end extends into the water collection funnel to form a water inlet channel. The front ends of the water guide sieve (3) are provided with flanges on both sides and connected to the guardrail bolts. One of the water collection funnels is connected to the water guide sieves in several of the lateral drainage holes to form multiple water inlet channels.

2. The overpass overflow drainage device as described in claim 1, characterized in that, The top wall of the lateral drainage opening is a downward-sloping wall with the inlet end higher than the outlet end.

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