Expansion joint concrete root position drainage device

Abstract

The utility model belongs to the technical field of bridges, and particularly relates to an expansion joint concrete root position drainage device which comprises a long steel pipe, a plurality of open holes are evenly formed in the upper surface of the long steel pipe, the long steel pipe is filled with a primary coarse aggregate inverted filter layer, one end of the long steel pipe is communicated with the upper portion of a funnel and welded to the funnel, and the other end of the long steel pipe is provided with a secondary coarse aggregate inverted filter layer. A filter screen is arranged in the funnel and located below the long steel pipe. And a bent flow deflector is welded in the outlet pipe below the funnel. The drainage device can collect accumulated water permeating into a bridge floor waterproof layer from the root of the expansion joint concrete pouring belt, then the accumulated water is drained into a bridge downpipe through the long steel pipe and the funnel or naturally flows to the position below a bridge, and the problem of concrete damage or steel beam corrosion caused by the accumulated water at the concrete root is avoided.

Description

Technical Field

[0001] The utility model belongs to the field of bridge construction, in particular to a drainage device at the root of expansion joint concrete. Background Art

[0002] When rainwater flows through the asphalt concrete of the bridge deck and penetrates into the bridge deck waterproofing layer, this part of rainwater cannot flow out quickly. It will slowly gather along the longitudinal and transverse slopes of the bridge to the base of the crash barrier and the base of the expansion joint concrete strip. Generally, there will still be seepage in the above-mentioned parts several days after the rain. Especially in the north in autumn and winter when there are freeze-thaw environment changes, it will cause concrete damage or steel beam rust. Summary of the Invention

[0003] The problem to be solved by the present invention is to overcome the shortcomings of the background technology and provide a drainage device for the root position of the expansion joint concrete.

[0004] The present invention is achieved through the following technical solutions:

[0005] A drainage device for the root position of expansion joint concrete comprises a long steel pipe, a plurality of openings are uniformly opened on the upper surface of the long steel pipe along the length direction of the long steel pipe, a primary coarse aggregate filter layer is filled inside the long steel pipe, one end of the long steel pipe is connected to the upper part of a funnel and welded to the funnel, a filter screen is arranged inside the funnel, and the filter screen is located below the long steel pipe; a curved guide plate is welded inside the outlet pipe below the funnel.

[0006] Preferably, an opening cover is provided above the funnel, an outer periphery of the upper portion of the funnel is provided with an external thread, an inner wall of the opening cover is provided with an internal thread, and the opening cover is threadedly connected to the funnel.

[0007] Preferably, the filter mesh is a stainless steel mesh.

[0008] Preferably, a secondary coarse particle filter layer is laid above the filter mesh.

[0009] Preferably, the hole spacing is 30 mm.

[0010] Preferably, the curved guide plate is an S-shaped iron plate.

[0011] The drainage device of the present invention can collect the accumulated water that penetrates into the bridge deck waterproof layer at the root of the expansion joint concrete strip. The accumulated water is discharged into the bridge downpipe through a long steel pipe and a funnel or flows naturally to the bottom of the bridge, avoiding the problem of concrete damage or steel beam corrosion caused by water accumulation at the root of the concrete. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a structural diagram of this embodiment;

[0013] Figure 2 This is a schematic diagram of the structure of this embodiment after the cover is opened;

[0014] Figure 3 This is a schematic diagram of the structure of the funnel after removing the outlet pipe from the bottom of the funnel in this embodiment.

[0015] In the figure, 1 is a long steel pipe, 2 is an opening, 3 is a funnel, 4 is a filter screen, 5 is an outlet pipe, 6 is a curved guide plate, and 7 is an opening cover. DETAILED DESCRIPTION

[0016] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments.

[0017] This embodiment includes a long steel pipe 1, which is preferably a galvanized steel pipe. A row of openings 2 are uniformly formed on the upper surface of the long steel pipe 1 along its length. The spacing between the openings 2 can be determined based on the water flow rate, preferably 30 mm. The openings 2 have the function of collecting rainwater, which penetrates the bridge deck asphalt concrete and enters the bridge deck waterproofing layer through the openings 2 and is collected into the long steel pipe 1. A primary coarse aggregate filter layer is filled inside the long steel pipe 1. The primary coarse aggregate filter layer is composed of coarse aggregate, which performs preliminary filtration on the rainwater.

[0018] One end of a long steel pipe 1 is welded to a funnel 3, and the two are in communication. A filter screen 4 is located below the long steel pipe 1. This filter screen 4 is made of stainless steel and can be welded directly to the inner wall of the funnel 3. A secondary coarse aggregate filter layer is placed above the filter screen 4. This secondary coarse aggregate filter layer also contains coarse aggregate and further filters the rainwater.

[0019] Preferably, an opening cover 7 is provided above the funnel 3, an outer thread is provided on the outer periphery of the upper portion of the funnel 3, an inner thread is provided on the inner wall of the opening cover 7, and the opening cover 7 is threadedly connected to the funnel 3. The dirt on the filter 4 can be cleaned by unscrewing the opening cover 7, and the threaded screwing method can also prevent the opening cover 7 from being blown open by strong wind.

[0020] To prevent foreign matter from entering the funnel 3 in the reverse direction through the outlet pipe 5 below the funnel 3 and blocking the water outlet below the funnel 3, a curved guide plate 6 is preferably welded inside the outlet pipe 5 below the funnel 3. In this embodiment, the curved guide plate 6 is preferably an S-shaped iron plate. The curved guide plate 6 divides the interior space of the outlet pipe 5 into separate curved spaces, thereby effectively preventing foreign matter from entering the interior of the funnel 3 in the reverse direction.

[0021] During construction, a long steel pipe 1 is embedded in the root of the upstream expansion joint concrete. The long steel pipe 1 is located below the asphalt concrete of the bridge deck and above the waterproof layer of the bridge deck. The long steel pipe 1 is located at the position of the expansion joint concrete. The long steel pipe 1 is placed along the length direction of the expansion joint, that is, the long steel pipe 1 is placed along the width direction of the bridge deck. The long steel pipe 1 extends to one side of the bridge. The funnel 3 can be connected to the downpipe of the bridge to allow the rainwater collected by the long steel pipe 1 and the funnel 3 to be discharged from the downpipe of the bridge. It can also be connected without any components and the rainwater can be directly discharged from the funnel 3 to the bottom of the bridge.

[0022] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them. Those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some of the technical features therein with equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A drainage device for the root of expansion joint concrete, characterized by: The invention comprises a long steel pipe (1), wherein a plurality of openings (2) are uniformly provided on the upper surface of the long steel pipe (1) along the length direction of the long steel pipe (1), a primary coarse particle filter layer is filled inside the long steel pipe (1), one end of the long steel pipe (1) is connected to the upper part of a funnel (3) and is welded to the funnel (3), a filter screen (4) is provided inside the funnel (3), and the filter screen (4) is located below the long steel pipe (1); and a curved guide plate (6) is welded inside the outlet pipe (5) below the funnel (3).

2. The expansion joint concrete root position drainage device according to claim 1, characterized in that: An opening cover (7) is provided above the funnel (3), an outer periphery of the upper portion of the funnel (3) is provided with an external thread, an inner wall of the opening cover (7) is provided with an internal thread, and the opening cover (7) and the funnel (3) are threadedly connected together.

3. The expansion joint concrete root position drainage device according to claim 1, characterized in that: The filter screen (4) is a stainless steel screen.

4. The expansion joint concrete root position drainage device according to claim 1, characterized in that: A secondary coarse particle filter layer is laid above the filter screen (4).

5. The expansion joint concrete root position drainage device according to claim 1, characterized in that: The openings (2) are spaced 30 mm apart.

6. The expansion joint concrete root position drainage device according to claim 1, characterized in that: The curved guide plate (6) is an S-shaped iron plate.

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