KR100686186B1 - Structure for drainage in bridge - Google Patents

Abstract

The present invention relates to a bridge drainage structure including a bridge top plate (10) and a bridge pavement (20) formed on an upper side of the top plate (10), and stays between the bridge top plate (10) and the bridge package (20). By presenting the structure characterized in that the drainage layer 100 is further provided with air gaps for the discharge of water, it is possible to efficiently drain the remaining water in the bridge package 20, the durability of the bridge packaging and bridge deck To improve.

Bridge, drainage

Description

Drainage Structure for Bridges {STRUCTURE FOR DRAINAGE IN BRIDGE}

1 to 3 show a conventional bridge drainage structure,

1 is a cross-sectional view.

2 is a plan view.

3 is an exploded perspective view.

4 to 6 show an embodiment of the bridge drainage structure according to the present invention,

4 is a cross-sectional view.

5 is an exploded perspective view.

6 is a longitudinal sectional view.

** Description of the symbols for the main parts of the drawings **

10 bridge deck 20 bridge construction

100: drainage layer 200: waterproof layer

300: adhesive layer 400: lower discharge means

401 discharge hole 410 hole

420: drain pipe 430: internal sump

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bridge drainage structure, and more particularly, to a structure for efficiently discharging water accumulated on an upper surface of a bridge by rainfall or the like.

1 to 3 show a conventional bridge drainage structure.

As shown, the general bridge is a bridge top plate 10 and the bridge pavement 20 is installed on the upper portion of the pier 60, the collecting well 50 is installed at a predetermined position, the lower side of the collecting well 50 The upper drain pipe 51 is installed through the bridge top plate 10 and the bridge package 20, the lower portion is connected to the lower drain pipe (52).

In addition, since the upper surface of the cross-linked package 20 has a downward slope at a predetermined angle from the central portion toward both end portions, when water accumulates on the upper surface of the cross-linked package 20 due to rainfall or the like, the accumulated water is applied to the slope. By flowing toward the sump 50, the water collected in the sump 50 is discharged to the lower portion of the bridge through the upper drain pipe 51 and the lower drain pipe (52).

On the other hand, most of the water accumulated on the upper surface of the bridge due to the rain or the like flows into the sump 50, but some of the water penetrates into the bridge pavement 20 through the cracks or small voids of the package, the conventional bridges In the drainage structure, such a retention water cannot be discharged to the outside, and it has been pointed out as a problem that has remained in the bridge package 20 and has been a factor of reducing the durability of the bridge packaging and the bridge deck.

In the case of general road pavement, there is no problem because the rainfall that penetrates the pavement is naturally absorbed into the foundation ground, but in the case of the bridge pavement of the bridge, the bridge deck (10) formed by concrete, steel, etc. in the lower layer of the pavement and the protection thereof Since the waterproof layer 30 and the adhesive layer 40 are positioned, the rainwater that penetrates the package does not penetrate the bridge top plate 10 and the waterproof layer 30.

Residual water remaining between the bridge pavement 20 and the bridge deck 10 causes material separation between asphalt and aggregates, and causes volume expansion due to freezing during the winter months. It is a direct or indirect cause of corrosion.

The present invention has been made in order to solve the above problems, the object of the present invention is to improve the durability of the bridge packaging and bridge deck to enable the drainage of the remaining water inside the bridge package efficiently.

In order to achieve the object as described above, the present invention, in the bridge drainage structure comprising a bridge top plate and the bridge package formed on the upper side of the bridge, for the discharge of the retention water between the bridge top plate and the bridge package Disclosed is a bridge drainage structure, characterized in that the drainage layer is further provided with voids.

The drainage layer may be formed by a drainage asphalt mixture, wherein the maximum particle diameter of the aggregate of the drainage asphalt mixture is 10 mm or less, and the porosity of the drainage layer is preferably 17% or more and 21% or less.

It is preferable to take a structure in which a waterproof layer is further provided between the bridge top plate and the drainage layer.

The waterproof layer may be formed of a material including methyl metal acrylic resin, and preferably further includes a material selected from the group consisting of a rust preventive agent, a filler, silica, a pigment, and a dispersant.

The waterproof layer may be formed of a material including an epoxy resin, in which case it is preferable to further include a material selected from the group consisting of epichlorohydrin, bisphenols, polyhydric alcohols, amines.

In addition, the waterproof layer may be formed of a sheet-based waterproofing material consisting of a synthetic rubber sheet or a synthetic resin sheet, the rubber asphalt, urethane rubber, acrylic rubber, acrylic resin, chloroprene rubber, selected from the group consisting of FRP-based waterproof film It may be formed by.

It is preferable to take a structure in which an adhesive layer is further provided between the bridge top plate and the waterproof layer, wherein the adhesive layer may be formed by a material selected from the group consisting of chloroprene rubber adhesives, bitumen rubber adhesives, methyl metal acrylic resin adhesives, and epoxy resin adhesives. have.

It is preferable that the upper surface of the bridge deck has a downward slope of a predetermined angle from the central portion toward both end portions.

The drainage layer and its lower portion is preferably further provided with a lower discharge means for discharging the remaining water to the lower portion of the bridge top plate.

The lower discharge means may comprise a perforated pipe embedded in the drainage layer, the perforated pipe is preferably installed in the longitudinal direction of the bridge top plate, and furthermore, the perforated pipe is effectively installed at both ends of the bridge top plate. .

The lower discharge means may be configured to include a drain pipe installed in the discharge hole extending downward from the drainage layer, in this case, the drain pipe is preferably installed so that the upper opening is located on the lower side of the hole pipe, the upper opening of the drain pipe It is effective to take a structure that is further equipped with an internal sump.

When the bridge drainage structure has a structure further including an upper drainage pipe installed through the bridge top plate and the bridge packaging body up and down, it is more preferable that the lower opening of the upper drainage pipe is located above the inner sump.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

As shown in Figures 4 to 6, the present invention relates to a bridge drainage structure comprising a bridge deck 10 and the bridge package 20 formed on the upper side of the bridge 10, the bridge deck ( It is characterized in that the drainage layer 100 is further provided with a gap between the 10) and the cross-packing body 20 for the discharge of the retained water.

That is, conventionally, since no separate structure is provided between the bridge top plate 10 and the bridge packaging body 20, the remaining water that penetrates the bridge packaging body 20 and does not flow into the collecting well 50 remains. Due to the problem that the strength and durability of the bridge is lowered, but the present invention is to solve the above problems by presenting a structure provided with a separate drainage layer 100 between the bridge top plate 10 and the bridge packaging body (20) It is intended to resolve.

Here, the drainage layer 100 may be any structure having voids for discharging the retained water. However, in order to stabilize the bridge pavement 20 and the bridge deck 10, the drainage layer 100 may have a structure formed by the drainage asphalt mixture. desirable.

As a result, the porosity of the drainage layer 100 by the drainage asphalt mixture is about 20% (17% or more, 21% or less) is most preferable, for this purpose, the maximum particle diameter of the aggregate constituting the drainage asphalt mixture is 10 It has been found to be less than or equal to mm.

On the other hand, when the water stays infiltrating the bridge pavement 20 and introduced into the drainage layer 100 directly contacts the bridge top plate 10, the bridge top plate 10 and the drainage layer 100 may be adversely affected. It is preferable to take a structure in which the waterproof layer 200 is further provided therebetween.

The waterproof layer 200 may be formed of any material or structure as long as the water in the drainage layer 100 does not come into contact with the bridge top plate 10. Hereinafter, an embodiment of a method of forming the waterproof layer 200 will be described. Explain about.

First, the waterproof layer 200 may be formed of a material including a methyl metal acrylic (MMA) resin, and more preferably further includes a material selected from the group consisting of a rust inhibitor, a filler, silica, a pigment, and a dispersant.

In this embodiment, the method of constructing the waterproof layer 200 is as follows.

First, foreign substances (rust, oil, etc.) on the surface of the bridge steel pipe 10 are removed, and then a primer mainly composed of MMA resin is applied to the upper surface of the bridge top plate 10. When the bridge top plate 10 is made of concrete, the roller And the bridge top plate 10 is made of steel, the primer containing the rust preventive agent is applied using a roller, a brush or the like.

Binder composed of 20% of liquid MMA resin and 80% of filler powder (including calcium carbonate, silica, pigment, dispersant, etc.) is mixed and applied to the surface, and air trapped inside using uneven stick or trowel. There should be no.

Thereafter, it is preferable that the aggregate is completely fixed by applying a sealer mainly composed of MMA resin to the surface.

Second, the waterproof layer 200 may be formed of a material including an epoxy resin, and more preferably further includes a material selected from the group consisting of epichlorohydrin, bisphenols, polyhydric alcohols, and amines.

Epoxy resin-based waterproofing material can be obtained by mixing a main material, such as epichlorohydrin, bisphenols, polyhydric alcohols, and a hardening material of amines, and can form a dense coating film, so high water resistance and corrosion resistance can be expected.

The construction method of this embodiment is as follows.

After the bridge top plate is completely dried, apply low viscosity liquid epoxy resin evenly.

After the liquid epoxy resin is completely dried, the epoxy resin is again applied to the surface and the silica sand is sprayed.

After that, the secondary viscosity of the low-viscosity epoxy resin is completely adhered to the aggregate.

In the above, in the method for constructing the waterproofing layer 200 according to the present invention, two exemplary embodiments have been described, but may be formed by a sheet-based waterproofing material such as a synthetic rubber sheet or a synthetic resin sheet, or rubber. It may be formed by a coating film-based waterproofing material such as asphalt, urethane rubber, acrylic rubber, acrylic resin, chloroprene rubber and FRP.

On the other hand, in order to completely adhere the bridge top plate 10 and the waterproof layer 200, it is preferable to take a structure further provided with an adhesive layer 300 therebetween.

The adhesive layer 300 may be formed before construction of the waterproof layer 200, and may be formed by applying one or two layers of a chloroprene rubber adhesive, a bitumen rubber adhesive, a methyl metal acrylic resin adhesive, an epoxy resin adhesive, and the like.

Paint of adhesive material should be applied without crack by using roller brush, trowel, rubber spatula, spreader, etc.

When apply | coating two or more layers of adhesive materials, each layer should be apply | coated uniformly, It is preferable to apply | coat one layer to the axial direction of a axial direction, and to apply two layers to a axial direction.

After the construction of the adhesive layer 300 is completed, curing until there is no volatile content.

Curing time is preferably about 1 hour at 20 ℃, 2 hours at 5 ℃, the curing degree may vary depending on the temperature, temperature, wind presence, etc., it is necessary to ensure sufficient time, The applied adhesive layer shall not be damaged.

On the other hand, in order to allow the water of the drainage layer 100 formed on the adhesive layer 300 and the waterproof layer 200 of the bridge top plate 10 to smoothly flow to both ends of the bridge, as shown in FIG. As described above, it is also necessary for the top surface of the bridge top plate 10 to have a downward slope at a predetermined angle from the center portion toward both end portions.

Hereinafter, an embodiment is further provided with a lower discharge means 400 for discharging the drainage layer 100 and the water remaining thereunder to the lower portion of the bridge top plate 10.

As shown in Figure 5 and 6, the lower discharge means 400 may be configured to include a hole pipe 410 embedded in the drainage layer 100, this hole hole 410 is introduced from the drainage layer 100 Allowing the discharged water to be discharged more quickly and smoothly.

The hole tube 410 may be installed in any manner as long as it helps to smoothly drain the staying water, and FIGS. 5 and 6 illustrate embodiments in the longitudinal direction at both ends of the bridge top plate 10.

In addition, the lower discharge means 400 may take a structure including a drain pipe 420 installed in the discharge hole 401 extending downward from the drainage layer 100, in which case the drain pipe 420 of the hole pipe 410 It is preferable that the upper opening is located at the lower side, and in order to allow the water stayed in the perforated pipe 410 to flow into the drain pipe 420 more smoothly, an internal collecting well 430 is further provided at the upper opening of the drain pipe 420. It is more preferable to take the structure.

Further, in order to organically combine the structure of the upper drainage pipe 51 and the structure according to the present invention that are installed to penetrate the bridge top plate 10 and the bridge package 20 up and down, as shown in FIG. It is preferable to take a structure installed so that the lower opening of the upper drain pipe 51 is located above the sump 430.

Since the above has been described only with respect to some of the preferred embodiments that can be implemented by the present invention, the scope of the present invention, as is well known, should not be construed as limited to the above embodiments, the present invention described above It will be said that both the technical idea and the technical idea which together with the base are included in the scope of the present invention.

The present invention improves the durability of the bridge pavement and bridge deck by efficiently draining the remaining water inside the bridge package.

Claims (22)

In the bridge drainage structure including the bridge top plate 10 and the bridge package 20 formed on the upper side of the top plate 10, A drainage layer 100 is further provided between the bridge top plate 10 and the bridge package 20 to form voids for discharging the remaining water. The drainage layer 100 is formed by a drainage asphalt mixture, Bridge structure, characterized in that the waterproof layer 200 is further provided between the bridge top plate 10 and the drainage layer (100). delete The method of claim 1, The drainage structure for bridges, characterized in that the maximum particle diameter of the aggregate of the drainable asphalt mixture is 10 mm or less. The method of claim 1, Bridge drainage structure, characterized in that the porosity of the drainage layer 100 is 17% or more, 21% or less. delete The method of claim 1, The waterproof layer 200 is a bridge drainage structure, characterized in that formed by a material containing methyl metal acrylic resin. The method of claim 6, The waterproof layer 200 is a bridge drainage structure, characterized in that it further comprises a material selected from the group consisting of rust inhibitor, filler, silica, pigment, dispersant. The method of claim 1, The waterproof layer 200 is a bridge drainage structure, characterized in that formed by a material containing an epoxy resin. The method of claim 8, The waterproof layer 200 is a bridge drainage structure characterized in that it further comprises a material selected from the group consisting of epichlorohydrin, bisphenols, polyhydric alcohols, amines. The method of claim 1, The waterproof layer 200 is a bridge drainage structure, characterized in that formed by a sheet-based waterproof material consisting of a synthetic rubber sheet or a synthetic resin sheet. The method of claim 1, The waterproof layer 200 is a bridge drainage structure, characterized in that formed by a coating film-based waterproofing material selected from the group consisting of rubber asphalt, urethane rubber, acrylic rubber, acrylic resin, chloroprene rubber, FRP system. The method of claim 1, Bridge drainage structure, characterized in that the adhesive layer 300 is further provided between the bridge top plate (10) and the waterproof layer (200). The method of claim 12, The adhesive layer 300 is a bridge drainage structure, characterized in that formed by a material selected from the group consisting of chloroprene rubber-based adhesive, bitumen rubber-based adhesive, methyl metal acrylic resin adhesive, epoxy resin adhesive. The method of claim 1, The upper surface of the bridge top plate 10 is a bridge drainage structure, characterized in that it has a downward slope of a predetermined angle from the central portion toward both ends. The method according to any one of claims 1, 3, 4, 6 to 14, The drainage layer (100) and the lower portion of the bridge drainage structure, characterized in that further provided with a lower discharge means (400) for discharging the remaining water to the lower portion of the bridge top plate (10). The method of claim 15, The lower discharge means 400 bridge drainage structure, characterized in that it comprises a hole pipe 410 embedded in the drainage layer (100). The method of claim 16, The hole pipe 410 is a bridge drainage structure, characterized in that installed in the longitudinal direction of the bridge top plate (10). The method of claim 17, The hole pipe 410 is a bridge drainage structure, characterized in that installed on both ends of the bridge top plate (10). The method of claim 15, The lower discharge means 400 is a bridge drainage structure, characterized in that it comprises a drain pipe 420 installed in the discharge hole (401) extending downward from the drainage layer (100). The method of claim 19, The drain pipe 420 is a bridge drainage structure, characterized in that the upper opening is installed in the lower side of the hole 410. The method of claim 20, The upper opening of the drain pipe 420, the drainage structure for bridges, characterized in that the inner sump 430 is further provided. The method of claim 21, Further provided with an upper drain pipe 51 installed through the bridge top plate 10 and the bridge package 20 up and down, Bridge structure, characterized in that the lower opening of the upper drain pipe 51 is installed on the upper side of the inner sump 430.

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