CN218712169U - Water drainage device between road surface pavement layer - Google Patents

Abstract

The utility model relates to a bridge drainage device, which provides a pavement interlayer water drainage device, comprising a main drainage pipe and a water collection tank; the water collecting tank is arranged at the concrete interface of the pavement and the expansion joint; the water collecting tank is paved along the transverse bridge direction and the opening of the water collecting tank faces the road surface; a water outlet is formed in the bottom end of the water collecting tank; the water outlet is connected to the main water outlet pipe through a branch water outlet pipe. The water drainage device between the pavement layers solves the problems of large construction workload and low construction efficiency of the existing water drainage device consisting of a large number of small water drainage pipes.

Description

Water drainage device between road surface pavement layer

Technical Field

The utility model relates to a bridge drainage device, especially a water drainage device between road surface pavement layer.

Background

In the bridge construction, the pavement of the bridge, such as asphalt pavement, is easy to generate interlayer water due to the action of upward seepage and lateral seepage, wherein the upward seepage means that surface water permeates into the interlayer through gaps of asphalt aggregates to generate interlayer water, and the lateral seepage means that water at the interface of the side surface of an asphalt layer and other structures permeates into the asphalt layer to generate interlayer water; under the condition that no drainage measure is made, the interlayer water can change the stress of pavement, so that the bending and tensile stress borne by the pavement is increased rapidly, and the interlayer water can generate frost heaving effect, thereby causing pavement damage; if water between layers is gathered near the expansion joint of the bridge, the water can corrode the rubber U-shaped groove of the expansion joint, so that the bridge pavement has the risk of generating cracks or damage due to expansion with heat and contraction with cold;

at present, the existing solution is to pre-embed a large number of tiny drain pipes on the lower side of the bridge before the concrete of the expansion joint is poured, so as to discharge interlayer water and prevent the interlayer water from damaging pavement and the expansion joint, but the method is inconvenient to install and low in construction efficiency.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a: the problem of current road surface pavement layer water drainage device comprises a large amount of tiny drain pipes, and the construction is inconvenient is solved, a road surface pavement layer water drainage device is provided.

In order to realize the purpose, the utility model discloses a technical scheme be:

a pavement interlayer water drainage device comprises a main drainage pipe and a water collecting tank; the water collecting tank is arranged at the concrete interface of the pavement and the expansion joint; the water collecting tank is paved along the transverse bridge direction and the opening of the water collecting tank faces the road surface; a water outlet is formed in the bottom end of the water collecting tank; the water outlet is connected to the main water outlet pipe through a branch water outlet pipe.

The water collecting tank can be made of various anti-corrosion materials, such as PVC and PE; the cross section of the water collecting tank can be in various shapes which are convenient for collecting interlayer water, such as U-shaped and C-shaped; the specific size of the water collection tank depends on the specific drainage capacity of the water collection tank and the field condition of interlayer water; the overall shape of the water collecting tank can be designed into a shape capable of concentrating interlayer water at a certain position in the water collecting tank so as to conveniently arrange a water outlet, for example, a ︶ -shaped and a Y-shaped water collecting tank is used.

The water collecting tank is arranged between the expansion joint and the pavement, can intercept and collect interlayer water spreading to the expansion joint to the water collecting tank, and then discharges to the main drainage pipe through the branch drainage pipe, so that the interlayer water is effectively prevented from being accumulated and spreading to the expansion joint in the pavement, the expansion joint is corroded, and the effects of protecting the asphalt pavement and the expansion joint and prolonging the service life of the bridge are achieved.

Compare simultaneously in the prior art of pre-buried a large amount of tiny drain pipes before pouring the expansion joint concrete, this scheme collects water to the water catch bowl between the layer to the wash port through the water catch bowl bottom is responsible for with the drainage of draining into between the layer, and every water catch bowl of this kind of scheme can only set up a outlet and drainage branch pipe, and this scheme can reduce the quantity of pipeline promptly, reduces the construction work volume, thereby improves the efficiency of construction.

As the preferred scheme of the utility model, the opening part of water catch bowl is provided with the geotechnological cloth that permeates water.

This scheme on the one hand can utilize the good water guide performance of geotechnological cloth that permeates water to further guide interlaminar water and assemble to the water catch bowl, and on the other hand is provided with the filler when the water catch bowl is inside, and when gravel, this scheme can guarantee the wholeness of water catch bowl and inside filler through geotechnological cloth that permeates water, and the graded broken stone drops from the water catch bowl when avoiding being under construction, convenient construction.

As the preferred scheme of the utility model, the catch basin intussuseption is filled with the gradation rubble.

On one hand, the scheme can utilize graded broken stones to support the structure of the water collecting tank, and prevent the water collecting tank from deforming to influence the flow of interlayer water; on the other hand, the graded broken stone has good water guiding performance and can guide interlayer water to enter a water collecting tank; interlayer water can also play a role in filtering interlayer water.

As a preferred scheme of the utility model, the diameter of the graded crushed stone is D; d is more than or equal to 10mm and less than or equal to 20mm.

The graded broken stones selected by the scheme can not only generate enough supporting effect on the water collecting tank, but also ensure good water permeability.

As a preferable scheme of the utility model, the water outlet is arranged at one end of the water collecting tank; the water collecting groove is inclined towards one end of the water outlet.

This scheme sets up the water catch bowl through the slope and makes wherein interlayer water concentrate the flow direction outlet, can simplify the design of water catch bowl and need not to use special-shaped water catch bowl to reduce cost reduces the construction degree of difficulty.

As the preferred scheme of the utility model, drainage mouth department still is provided with filter equipment.

The filter means may be various filter means such as wire netting or gauze as long as it can block debris enough to block the drain branch from entering the drain branch.

This scheme can prevent that the rubble in the water catch bowl from running off through the outlet to and piece entering drainage branch pipe causes the obstructed problem of drainage branch pipe.

As the preferred scheme of the utility model, filter equipment is stainless steel wire net.

Stainless steel net is corrosion-resistant, long service life, and difficult jam more is fit for this scheme filter equipment and owing to set up inside the bridge, is difficult to the use sight of maintaining.

As the preferred scheme of the utility model, the water catch bowl is stainless steel material component.

The water collecting tank has high strength, is not easy to deform, is not easy to rust and corrode due to long-term water contact with layers, and has long service life.

As the preferred scheme of the utility model, the top that the drainage was responsible for still is provided with the well lid.

This scheme can block that bulky rubbish gets into and blocks up the drainage and be responsible for like branch, stone.

As the preferred scheme of the utility model, the drainage is responsible for with the part that road surface pavement corresponds is provided with the cast iron festival section.

The cast iron segments are arranged at the part of the main drainage pipe buried in the pavement, so that the main drainage pipe can be prevented from being damaged due to the load borne by the pavement, such as the load generated by the running of a vehicle.

To sum up, owing to adopted above-mentioned technical scheme, the beneficial effects of the utility model are that:

1. this scheme is through setting up the water catch bowl between expansion joint and road surface pavement, will intercept and collect to the interlayer water that the expansion joint stretchs, discharges the drainage via the drainage branch pipe again and is responsible for, prevents effectively that interlayer water from piling up and stretching to expansion joint department in road surface pavement to the situation of expansion joint production corruption, and then play protection road surface pavement and expansion joint, extension bridge life's effect.

2. Compared with the prior art that a large number of small drain pipes are pre-buried before the concrete of the expansion joint is poured, interlayer water is collected to the water collecting tank, and the interlayer water is drained into the main drain pipe through the drain hole at the bottom end of the water collecting tank; every water catch bowl of this scheme can only set up a outlet and drainage branch pipe, can reduce the quantity of pipeline, reduces the construction work volume to improve the efficiency of construction.

3. The scheme can also add graded broken stones and permeable geotextile for the water collecting tank, thereby increasing the water guiding property of the water collecting tank and better guiding interlayer water to collect to the water collecting tank.

Drawings

FIG. 1 is a schematic cross-sectional view of a water drainage device between pavement layers according to the present invention;

FIG. 2 is a schematic top view of the water drainage device for pavement layers of the present invention;

FIG. 3 is an enlarged partial schematic view at the sump;

icon: 1-a water collecting tank; 2-graded broken stone; 3-expansion joint; 4-a filtration device; 5-a drain branch pipe; 6-main drainage pipe; 7-permeable geotextile; 8-paving the pavement; 9-expansion joint concrete; 11-a water outlet; 61-cast iron segments; 62-well cover.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings.

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

Example 1

As shown in fig. 1 to 3, the utility model discloses a pavement interlayer water drainage device, which comprises a main drainage pipe 6 and a water collection tank 1;

wherein the water collecting tank 1 is positioned at the interface of the pavement 8 and the expansion joint concrete 9, and the opening faces the pavement 8; one end of the water collecting tank 1 is provided with a water outlet 11; the water collecting tank 1 is arranged along the transverse bridge direction and is inclined towards one end where the water discharge opening 11 is positioned, so that the height of the water discharge opening 11 is lower than that of other areas of the water collecting tank 1, and interlayer water flows towards the water discharge opening 11; the water outlet 11 is connected with the main water outlet pipe 6 through the branch water outlet pipe 5; for the embodiment, the water collecting tank 1 is a U-shaped water collecting tank 1 made of stainless steel, and is simple to manufacture and corrosion resistant; considering the movement track of the interlayer water under the action of gravity, the bottommost end of the water collecting tank 1 is lower than the bottommost end of the pavement 8; the diameters of the water outlet 11 and the branch drain pipe 5 are set to be fifty millimeters, which is enough to deal with the common interlayer water drainage situation;

graded crushed stones 2 are filled in the water collecting tank 1; and for this embodiment, graded crushed stone 2 with a diameter grade of twenty millimeters is used to give consideration to the supporting and filtering functions.

In the construction of the drainage device of the embodiment, before the concrete 9 of the expansion joint is poured, the water collection tank 1 can be welded on the reinforcing steel bars of the bridge or fixed through the brackets connected with the reinforcing steel bars of the bridge according to the specific conditions, such as material and position, of the water collection tank 1; and after the installation of the water collecting tank 1 and the drainage branch pipe 5 is confirmed, pouring expansion joint concrete 9.

The part of the main drainage pipe 6 embedded in the pavement 8 is also provided with a cast iron segment 61; a manhole cover 62 is further provided at the uppermost end of the cast iron receiving end 61 to prevent large garbage such as twigs and stones from entering and blocking the main drainage pipe 6. For this embodiment, the main drain pipe 6 is a two hundred millimeter diameter PVC pipe.

When interlayer water appears in the pavement 8 and spreads towards the expansion joint 3, the graded broken stones 2 have good water guiding performance, so that the interlayer water can be guided to converge towards the water collecting tank 1 and flow into the drainage branch pipe 5 through the water outlet 11, and then converge into the drainage main pipe 6 to finish drainage; and the accumulated water on the surface of the pavement 8 can directly flow into the main drainage pipe 6.

Example 2

As shown in fig. 3, on the basis of embodiment 1, a permeable geotextile 7 is further provided at the opening of the water collection tank 1.

The embodiment can guarantee the wholeness of graded broken stone 2 and water catch bowl 1 on the one hand, can utilize the good water guide performance of geotechnological cloth 7 that permeates water to further guide the interlayer water to assemble to water catch bowl 1 on the one hand.

Example 3

As shown in fig. 1 to 3, in addition to the embodiments 1 to 2, a filter device 4 is provided at the drain port 11; for this embodiment, the filter device 4 is a stainless steel wire mesh.

This embodiment can prevent clogging of the drain branch pipe 5 caused by the crushed stone erroneously entering the drain branch pipe 5.

The above description is only exemplary of the present invention and should not be construed as limiting the present invention, and any modifications, equivalents and improvements made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims (10)

1. A pavement interlayer water drainage device comprises a main drainage pipe (6); it is characterized by also comprising a water collecting tank (1); the water collecting tank (1) is arranged at the interface of the pavement (8) and the expansion joint concrete (9); the water collecting tank (1) faces the pavement (8) along the transverse bridge direction and is opened; a water outlet (11) is formed in the bottom end of the water collecting tank (1); the water outlet (11) is connected to the main water outlet pipe (6) through a branch water outlet pipe (5).

2. A water draining device between road pavements according to claim 1, characterized in that the opening of the water collecting tank (1) is provided with a water permeable geotextile (7).

3. A water draining device between road pavements according to claim 1, characterized in that the water collecting tank (1) is filled with graded crushed stones (2).

4. A water draining device between paving courses according to claim 3, characterized in that the graded macadam (2) has a diameter D; d is more than or equal to 10mm and less than or equal to 20mm.

5. A water draining device between paving courses according to claim 1, characterized in that the water draining port (11) is arranged at one end of the water collecting channel (1); the water collecting tank (1) inclines towards one end where the water outlet (11) is located.

6. A road paving interlaminar water draining device according to any one of claims 1 to 5, characterized in that a filtering device (4) is also provided at the water draining port (11).

7. A water draining device between road paving courses according to claim 6, characterized in that the filtering means (4) is a stainless steel wire mesh.

8. A road paving interlayer water draining device according to any one of claims 1-5, characterized in that the water collecting tank (1) is a stainless steel member.

9. A water draining device between road paving layers as claimed in any one of claims 1 to 5, characterized in that the top end of the main draining pipe (6) is also provided with a well cover (62).

10. An interlaminar water drainage device according to any one of claims 1 to 5, characterized in that the part of the main drainage pipe (6) corresponding to the pavement (8) is provided with cast iron segments (61).

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