JPH0626013A - Secondary drain construction of road bridge - Google Patents

Abstract

PURPOSE:To provide a secondary drain construction for rain water and the like permeated to the waterproof layer of a road bridge, concerning the drain construction of a bridge structure. CONSTITUTION:Permeated water guide members 30 are continuously arranged in the lengthwise direction of a bridge along the inside of rising corner parts of a waterproof layer 28 which is arranged on a bridge floor slab 12 and intercepted with groundwork parts 14 provided on both sides of the bridge floor slab 12, and decided positions of the members are connected to a drain system. Further, paving material 32 is arranged on the waterproof layer 28 and the permeated water guide members 30. Due to this drain construction, rain water permeated as far as the waterproof layer 28 on the bridge floor slab 32 through the paving material 32 is outward drained perfectly and quickly through the permeated water guide members 30 arranged along the lengthwise direction of the bridge and the drain system 24.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a drainage structure for a bridge structure, and more particularly to a secondary drainage structure for rainwater that has penetrated to a waterproof layer through an asphalt pavement in a road bridge. Is.

[0002]

BACKGROUND OF THE INVENTION Generally, rainwater and the like on a bridge surface of a road bridge are removed to the outside through a drainage system such as a drainage basin and a drainage pipe arranged near a joint portion of a bridge deck. Has been done.

On the other hand, rainwater that has penetrated through the pavement material such as asphalt to the waterproof layer on the bridge floor slab is drained through the drainage holes formed on the wall surface of the expansion and contraction device arranged at the joint, the side surface of the drainage basin, and the like. However, it is difficult to completely and quickly drain the rainwater that has penetrated the upper surface of the waterproof layer.

The rainwater that is not drained and stays on the upper surface of the waterproof layer not only deteriorates the surface pavement, peels off and damages it, but also penetrates into the bridge plate to improve the durability of the road bridge itself. This is a cause of decrease.

[0005]

Therefore, according to the present invention,
The waterproof layer arranged on the bridge deck is raised to the ground cover provided on both sides of the bridge floor plate, and the permeated water guide member is arranged in the bridge length direction along the inside of the rising corner of the waterproof layer. By connecting a predetermined location of the permeated water guide member to a drainage system and further disposing a pavement material on the waterproof layer and the permeated water guide member, rainwater that has permeated to the waterproof layer through the pavement material can be introduced into the permeated water guide member and It is designed to be completely and quickly removed using a drainage system.

In this case, if the permeated water guide member is formed by spirally winding a stainless steel material, not only the handling operation but also the mutual connection of the guide members and the bending process can be easily performed, and the holes can be formed. Unlike the pipe shape with cut grooves or grooves, the spiral stainless steel material can withstand the load from above, and it is the best shape for guiding water without clogging.

[0007]

[Operation] In the secondary drainage structure according to the present invention, the rainwater that has permeated to the waterproof layer on the bridge deck through the paving material such as asphalt is the permeated water guide arranged along the length direction of the bridge. It is quickly drained to the outside through the members and the drainage system.

[0008]

The preferred embodiments of the secondary drainage structure in the road bridge according to the present invention will be described in detail below with reference to the accompanying drawings.

In the accompanying drawings, a road bridge 10 has ground cover portions 14 and 14 arranged on both sides of a bridge floor slab 12, and balustrade members 16 are erected on the ground cover portions 14, respectively. .

A well-known expansion joint device 18 is arranged at the joint portion of the bridge deck 12, and an external drainage system 24 composed of a drainage basin 20 and a drain pipe 22 is provided in the vicinity of the expansion joint device 18. is set up.

In this embodiment, the bridge deck 12
The drainage pipes 26 are installed at a predetermined interval along the bridge length direction X in the portion where the rises to the ground cover portion 14, and these drainage pipes 26 are also connected to the external drainage system 24 on the lower surface of the bridge deck 12. Needless to say, these drainage pipes 26 can be omitted depending on the structure or length of the road bridge 10.

A waterproof layer 28 having a predetermined transverse slope is disposed on the bridge floor slab 12, and the waterproof layer 28 is a side surface of both side ground covers 14, 14 of the bridge floor slab 12. Has been launched.

On the other hand, the rising corner portion 28a of the waterproof layer 28
Inside the bridge length direction X, for example, a spiral permeated water guide member 30 in which a stainless spring steel material having a thickness of about 2 mm is spirally wound and its diameter is set to about 2 cm The external drainage system 24 is connected to the external drainage system 24 by connecting an appropriate number of end portions of the permeated water guide member 30 directly or via a flexible tube (not shown) or the like.
Connect to.

When connecting the permeated water guide members 30 to each other, the connected end portions of the permeated water guide members 30 and 30 can be easily connected by screwing them into each other, and the road bridge is curved. It can be easily placed along the curve in case and in case of inlandness.

The permeated water guide member 30 is a so-called
Since it is formed as a vertical drainage system, if it is also connected to the drainage pipes 26 arranged at predetermined intervals along the bridge length direction X by appropriate means, the permeated water on the waterproof layer 28 can be drained quickly. Can be done.

In the attached drawings, reference numeral 32 is
The paving material 32 is provided on the waterproof layer 28, and the paving material 32 is composed of a base layer 32a and a surface layer 32b.

In the secondary drainage structure according to the present invention constructed as described above, the permeated water such as rainwater that permeates the waterproof layer 28 through the pavement material 32 is started up by the transverse gradient attached to the waterproof layer 28. Moving to the inside of the corner 28a, this corner 2
Permeated water guide member 3 as a vertical drainage pipe inside 8a
Is guided in the bridge length direction X by 0, and the drainage basin 20,
Drainage system 24 including drainage pipe 22 and drainage pipe 26
Will be eliminated through.

[0018]

As described above, according to the secondary drainage structure of the present invention, the rainwater that has permeated to the waterproof layer through the pavement material is applied to the lateral end of the road bridge due to its cross slope. Since it is quickly guided to the outside through the permeated water guide member and drainage system arranged in the bridge length direction, rainwater does not stay on the upper surface of the waterproof layer, thus degrading or peeling the surface pavement material. It will not be damaged. Further, since rainwater does not permeate the bridge deck, it has various advantages such as the durability of the road bridge itself can be improved.

Although the preferred embodiment of the secondary drainage structure in the road bridge according to the present invention has been described above, the present invention is not limited to this embodiment. For example, a predetermined direction in the transverse direction of the road bridge. Needless to say, various design changes can be made without departing from the spirit of the present invention, for example, by disposing the permeated water guide member only on one side when it is inclined.

[Brief description of drawings]

FIG. 1 is an explanatory plan view of a preferred embodiment of a secondary drainage structure in a road bridge according to the present invention.

FIG. 2 is a cross-sectional explanatory view of a main part of a secondary drainage structure in the road bridge shown in FIG.

FIG. 3 is a perspective view of a main part of the secondary drainage structure shown in FIG.

[Explanation of symbols]

10 Road bridge, 12 Bridge floor slab, 14
Ground cover part, 16 balustrade member, 18 expansion joint device,
20 drainage pipe, 22 drainage pipe, 24 external drainage system, 26 drainage pipe, 28 waterproof layer,
30 seepage water guide member, 32 paving material,

Claims (2)

[Claims] 1. A waterproof layer disposed on a bridge slab is erected on ground coverings provided on both sides of the bridge slab, and a permeated water guiding member is provided along the inside of the rising corner of the waterproof layer to bridge length. A secondary drainage structure in a road bridge, wherein the secondary drainage structure is arranged in a direction and a predetermined portion of the permeated water guide member is connected to a drainage system, and a pavement material is further disposed on the waterproof layer and the permeated water guide member. 2. The permeated water guide member is formed by spirally winding a stainless steel material.
Secondary drainage structure in the road bridge described in.