JPH02183001A - Drainage structure for bridge surface pavement having water-resistant layer - Google Patents

Abstract

PURPOSE:To prevent exfoliation and breaking of a pavement body by connecting each joint of bridge surface pavement, made by providing a water-resistant layer over a floor plate, by drainage guide passages with catch basins interposed in between, and by draining thereby water collected on the water-resistant layer. CONSTITUTION:A water-resistant layer 2, made of sheet-type or synthetic rubber film-type water-resistant materials or the like, is constructed over a floor plate 1 at the bridge surface, and catch basins 3 made of cast iron are arranged thereon. Then a drainage guide passage 5 is made of such materials as network fabrics, meshes, non-woven fabrics or the like that is prepared in a strip or a belt shape. Then the passage is laid along kerbs or curbs 6 to connect each of the catch basins 3. After this, the bridge surface is paved with hot bituminous mixture and rolling compaction is applied thereon for finishing. As rainwater permeating through the pavement 7 is led through the drainage guide passage 5 and quickly drained through the catch basins 3, exfoliation and breakage of the pavement 7 can be prevented.

Description

[Detailed Description of the Invention] (Industrial Use Branch) The present invention provides waterproof layers for road bridges, elevated road bridges, elevated parking lots, etc. This invention relates to a drainage structure for a bridge pavement. More specifically, the bridge is equipped with a waterproof layer that effectively drains rainwater that seeps into the lower part of the pavement surface by functioning as a continuous water-permeable drainage guideway between each joint of the bridge surface pavement. This relates to the drainage structure of bridge pavement.

(Prior art) Recently, bridge surfaces have been paved? When this is done, it is customary to completely waterproof the slab before paving, and then pave on top of it, in order to protect the slab and prevent damage to the pavement.

Waterproofing methods include those using sheet-based waterproofing materials, those using synthetic rubber-based coating waterproofing materials, those using asphalt-based coating waterproofing materials, and those using pavement-based coating waterproofing materials. However, using this method to apply a waterproof layer of gold to the deck slab and then construct a bridge pavement entirely on top of that may have the opposite effect to the purpose of applying the waterproof layer. In other words, rainwater that permeates through the pavement is blocked by the waterproof layer and collects on the waterproof layer along the curb or ground cover, and the accumulated water deteriorates the pavement and causes damage to the pavement. . Therefore, it penetrates the pavement body,
It is necessary to promptly remove the water that has accumulated, and wastewater treatment measures have become an important issue that determines the success or failure of installing a waterproof layer. Therefore, as a measure to treat this wastewater, draining water can be drained by opening the drain port completely on the side of the drainage basin installed adjacent to the stone or ground cover, or by opening the drain port on the wall of the expansion and contraction device (joint part) of the bridge pavement. I've been processing it. Also, do you drill key money into the floor slab and embed a drainage pipe in the hole for drainage treatment? There are examples where this has been done.

(Problem to be solved by the invention) However, in the wastewater treatment using such a drainage structure, since the form of wastewater treatment is point-based wastewater treatment, the drainage is incomplete, and drainage near the drainage basin is possible. So,
However, there is a drawback that water on the waterproof layer between the joint and the drainage basin or between the drainage basins remains and accumulates without being drained. Then, a peeling phenomenon occurs on the pavement,
This eventually leads to damage to the pavement. Therefore, by using wastewater treatment using a linear structure instead of a point structure, we can completely eliminate water and gold accumulated on the waterproof layer between joints and drainage basins, or between drainage basins, and peel off the pavement. Prevent and damage the pavement? There is a need to prevent this.

(Means for solving all problems) The purpose of the present invention is to meet such demands, and to connect each joint part of the bridge surface pavement with a drainage guideway through a drainage basin. Is it possible to create a durable pavement that completely eliminates water accumulated on the waterproof layer by providing a continuous drainage channel and completely prevents peeling of the pavement? Provides full drainage structure for maintaining eroded bridge pavement.

In addition, the present invention provides a bridge surface pavement with a waterproof layer provided on the deck, along a position where a curb or ground cover and the pavement are adjacent to each other between the joints of the bridge surface pavement. A drainage guideway through which water can pass is provided on the top surface of the waterproof layer, and a drainage basin is placed in the drainage guideway. A waterproof layer that features all the features provided? This is a complete summary of the drainage structure of the bridge pavement provided.

(Example) Next, what about the waterproof layer in the present invention? The entire drainage structure of the bridge surface pavement provided will be explained with reference to the illustrated embodiment.

In the figure, (1) is the deck slab of the bridge surface. (2) is a waterproof layer, such as prime coat? is applied and bonded to the floor slab (1). (3) is a drainage basin, and the waterproof layer (2)
It is located on the top surface and has a drain hole (4) on the side (Figure 2). (5) is a drainage guideway, which is provided on the upper surface of the waterproof layer (2) along the position where the curb or ground cover (6) and the pavement (7) are adjacent; Between the joint part and the drain port (4) of the drainage basin (3), and between each drainage basin (3)
41 to form a continuous drainage channel.

The pavement (7) is a heated bituminous mixture pavement and has a waterproof layer (
2) and necessary L! ll Heated bituminous mixture on top of the drainage guideway (5)? Finished by leveling and rolling. (8
) is a bituminous rubber joint material used for curbing or ground covering (6)
The boundary between the surface and the pavement (force) is a seal provided to prevent the infiltration of rainwater, etc., using a bituminous rubber-based heat-applied injection joint material or a molded bituminous rubber-based joint material. etc. These joint materials are used after applying a primer.

The floor slab (1) as used in the present invention is, for example, a concrete floor slab or a steel deck slab of a road bridge, an elevated road bridge, an elevated parking lot, or the like.

The waterproof layer (2) used in the present invention includes a waterproof layer made of a sheet waterproof material, a waterproof layer made of a synthetic rubber coating waterproof material, a waterproof layer made of an asphalt coating waterproof material, and a waterproof layer made of a pavement coating waterproof material. Either of these is fine.

Waterproofing methods using sheet-based waterproofing materials include a method of using asphalt i for pasting (driving and pasting with heated and melted asphalt) and a method of welding the sheet while completely heating it. The waterproofing method using a synthetic rubber coating waterproofing material involves repeating the application and drying of synthetic rubber to form a complete waterproofing coating in multiple layers. The waterproofing method using an asphalt-based coating film waterproofing material is to apply heat-molten rubber-containing asphalt in one to three times, and then sprinkle aggregate on the surface. Also, during the layering,
Inserting the entire mesh sheet is also practiced. The waterproofing method using pavement coating waterproofing materials uses hard asphalt (a mixture of petroleum asphalt and Trinidad Lake asphalt, with a standard ratio of 6:4) as a binder for aggregate and filler. The pavement will be paved with a heated asphalt mixture to a thickness of approximately 20 m.

The drainage basin used in the present invention is a conventional cast iron or iron drainage basin. Additionally, a specially designed drainage basin may be used.

The drainage guide path (5) in the present invention is a mesh cloth, mesh,
A non-woven fabric, a paper drain made of synthetic fiber, a polypropylene mat, etc., is worked into an appropriate shape.It is constructed by installing it on the waterproof layer (2) adjacent to the entire curb or ground covering (6). An appropriate shape is, for example, formed by processing into a thin plate shape or band shape and joining or overlapping them. These cross-sectional shapes are 3% thick and 25 tr
ys is usually 5-20w R1 width is 30-150 neck and usually 5
It is about 0 to 100m+a. The net-like cloth, mesh, etc. are, for example, net-like cloth, mesh, etc. made of glass fiber, organic fiber (including natural, synthetic, artificial, etc.), carbon fiber, metal fiber, metal wire, plastic, etc. The nonwoven fabric is made of, for example, synthetic fibers such as polyester, polyamide, polypropylene, and vinylon, carbon fibers, and the like.

As shown in FIG. The drainage guide path (5) can also be entirely formed as an inverted U-shaped underdrain made of metal or synthetic resin without a bottom and with an appropriate drainage port provided on one side.

The pavement used in the present invention is a pavement of heated bituminous mixture which is usually used for bridge pavement, such as asphalt concrete, modified asphalt concrete, etc. Also available.

(Effects of the Invention) The drainage structure of the bridge surface pavement completely equipped with a waterproof layer according to the present invention is configured as described above, and therefore has the following excellent features and effects.

(b) Rainwater, etc. on the pavement surface moves along the slope of the pavement and flows out along the curb or ground cover side, and is removed from the drainage basin.
Some of it penetrates the pavement and accumulates on the nearby waterproof layer along the curb or ground cover. However, since a continuous drainage guideway is provided along the adjacent position between the curb or ground cover and the pavement, this water can be quickly guided to the drainage outlet of the drainage basin by constructing this drainage guideway. Since the water is removed through one drainage basin, water does not accumulate between the waterproof layer and the pavement.

(b) Therefore, since there is no peeling of the pavement due to the influence of water or damage to the pavement due to this, the lifespan of the pavement is
Durability and usability are improved, and an excellent pavement is maintained.

C→ Since vehicles almost never drive or pass on the pavement at the location where the drainage guideway is installed, there is no fear that it will be damaged and lose its drainage function.

As described above, the drainage structure for a bridge pavement provided with a waterproof layer according to the present invention is suitable for drainage structures for bridge pavements such as road bridges, elevated road bridges, and elevated parking lots.

[Brief explanation of the drawing]

The figures show an embodiment of the present invention, Fig. 1 is a perspective view with part F11 completely cut away, Fig. 2 is a vertical side view in the direction along the drainage guideway, and Fig. 3 is a direction across the drainage guideway. FIG. In the figure, (1) is a concrete deck slab or a steel deck slab, (
2) is a waterproof layer, (3) is a drainage basin, (4) is a drainage hole, (5)
) is a drainage guideway, (6) is a curb or ground covering, (7) is a pavement, and (8) is a bituminous rubber joint material.

Claims (1)

[Claims] In a bridge pavement in which a waterproof layer is provided on the deck slab, the upper surface of the waterproof layer is passed along the position where the pavement is adjacent to the curb or ground cover between the joints of the bridge pavement. A drainage structure for a bridge surface pavement body equipped with a waterproof layer, characterized in that a drainage guideway through which water can flow is provided, and a drainage basin is provided in the drainage guideway.