JPH0220241Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention relates to the improvement of the surface structure of steel deck pavement, and is applied to bridges such as road bridges and viaducts.

[Conventional technology]

According to the results of research conducted by the inventors of the present invention, the important points of the surface structure of the steel deck pavement surface are as follows. That is, (a) the wear-resistant member has a high locking force, that is, a high resistance to falling off;

(b) The surface layer must have excellent flexibility and be able to follow the deformation of the steel deck due to the action of wheel loads, without causing cracks.

(c) The wheel load can be distributed and transmitted to the underlying layer, making it difficult for rutting to occur.

(d) The surface layer can be produced in a factory, can be easily transported wrapped around a drum, and has excellent installation workability.

However, the current situation is that there is still no surface structure for conventional steel deck pavements that satisfies all of the above-mentioned points.

[Purpose of invention]

The purpose of the present invention is to provide an excellent surface structure for a steel deck pavement road surface that can satisfy all of the above-mentioned points.

[Structure of the idea]

That is, the present invention is composed of a base layer laid on the surface of a steel deck, and a surface layer placed on the surface of this base layer via an adhesive layer, and the surface layer is mainly made of a flexible polymer material. In addition, a large number of wear-resistant members each having a substantially trapezoidal longitudinal section are embedded so that their heads are exposed on the surface of the surface layer, and each of the wear-resistant members is fitted and locked. The gist of the present invention is a surface structure for a steel deck pavement surface, which is characterized by a flexible plate provided with holes being integrally fixed within the surface layer.

Hereinafter, the present invention will be explained in detail by way of examples with reference to the drawings.

FIG. 1 is a partially cutaway perspective explanatory view showing the overall structure of a steel deck pavement road surface to which a surface layer according to an embodiment of the present invention is applied, and FIG. 2 is an enlarged plan view explanatory view showing the main parts of the same. FIG. 3 is an explanatory cross-sectional view taken along the line A-A in FIG.

In the figure, the overall structure of the steel deck pavement surface E is as follows:
It consists of a base layer 20 laid on the surface of the steel deck 10 and a surface layer 40 placed on the surface of the base layer 20 with an adhesive layer 30 interposed therebetween.

In the present invention, in particular, the surface layer 4
0 is mainly formed of a flexible polymeric material 41 and has a large number of wear-resistant members 44 each having a substantially trapezoidal cross section, which are buried so that their heads 44a are exposed on the surface 40a of the surface layer 40. Furthermore, a flexible plate 42 provided with holes a into which the respective wear-resistant members 44 are fitted and locked is integrally fixed within the surface layer 40.

To further explain this structure, the wear-resistant member 44 is made of a wear-resistant material such as ceramic, ceramic-lined metal, steel fiber reinforced concrete, FRP, plastic, etc., and is formed into a substantially trapezoidal longitudinal section. ing.

The flexible plate 42 is made of a flexible and corrosion-resistant material such as FRP, plastic, and stainless steel plate, and fits and locks the wear-resistant members 44 at predetermined intervals. A hole a is bored in this embodiment, and as shown in FIG. bending part 43
is formed.

The steel deck plate 10 constitutes the base of pavement applied to bridges such as road bridges and viaducts, and in this embodiment, after removing rust by blasting etc., it is subjected to anti-rust treatment and anti-rust coating. Steel plates are used.

In addition, the base layer 20 laid on the surface 10a of the steel deck 10 is 5mm thick due to irregularities such as build-up of welds and traces of cutting and removal of hanging pieces, which are scattered on the surface 10a of the steel deck 10, that is, the surface to be paved. It is mainly used to correct unevenness to a certain degree, and after being laid on the steel deck plate 10 to a thickness of about 5 mm to 40 mm, it is hardened.

The base layer 20 is made of materials such as bituminous, bituminous rubber, resin such as epoxy resin and urethane resin, bituminous resin, and rubber, and further includes ceramic powder and silica sand in addition to these materials. It is easy to pave to a uniform thickness by mixing aggregates such as slag, fibers, and rust preventive materials, or by embedding various waterproof sheets such as nonwoven fabric, cloth, paper, mesh sheets, mesh, etc. in the base layer 20. It is preferable to prevent rutting (flow deformation) due to wheel loads by adding waterproof properties.

In addition, when the base layer 20 is mainly made of bitumen or bituminous rubber, a material with a high aggregate ratio such as asphalt concrete is used, or when goose asphalt is used, a honeycomb-shaped wire mesh, etc. Burying can further prevent rutting (flow deformation) caused by wheel loads.

Further, the base layer 20 described above is similar to the adhesive layer 30.
This can be omitted if corrosion protection or unevenness correction of the steel deck plate 10 can be achieved with this step.

The adhesive layer 30 is made of a resin-based material such as an epoxy resin or a urethane resin, a rubber-based material, a bitumen-based material, a bituminous rubber-based material, or a rubber-based material.
A liquid adhesive such as bituminous resin, or a rubber material such as hot melt rubber or naturally vulcanized rubber is used.

In this embodiment, the adhesive layer 30 is made of a two-component room-temperature curing high modulus epoxy adhesive which is elastic and has excellent extensibility and set resistance, and preferably has a thickness of 1 mm to 5 mm.

Then, through this adhesive layer 30, the base layer 2
The surface layer 40 laid on the surface 20a of
As described above, a large number of wear-resistant members 44 mainly made of flexible polymeric material 41 and having a substantially trapezoidal longitudinal section are formed so that their heads 44a are exposed on the surface 40a of the surface layer 40. Further, a flexible plate 42 provided with holes a into which the respective wear-resistant members 44 are fitted and locked is integrally fixed within the surface layer 40 .

Therefore, the surface layer 40 is
It is possible to impart excellent flexibility to the surface layer 4 by following the bending deformation of the steel deck due to the wheel load action.
It is possible to prevent cracks from forming on the surface layer 40, while improving the rigidity of the surface layer 40 and dispersing the wheel load and transmitting it to the base layer 20, thereby increasing the resistance to rutting. be able to.

Furthermore, the abrasion resistance of the paved surface can be improved by the abrasion resistant member 44, and the paved surface can be roughened to obtain a paved surface with high slip resistance. The locking force, that is, the resistance to falling off can be significantly improved.

The surface layer 40 is mainly made of a flexible polymeric material 41 such as rubber or plastic and is molded in a factory. Since the surface layer 40 is formed of the flexible polymer material 41 in this way, it can be easily joined along the curvature or slope of the steel deck plate 10 or the base layer 20 laid on its surface. As a result, a smooth paved surface can be obtained, and the steel floor plate 10 has excellent followability to the deflection caused by vehicle running, etc., and the occurrence of cracks can be prevented.Furthermore, this surface layer 40 can be easily produced in a factory. It is possible.

Note that the width dimension of this surface layer 40 is limited depending on the capacity of the production equipment, but the length dimension can be continuously formed into a long length, and in this example, the length of the expansion joint on the bridge surface is It is molded to the same length.
When forming the surface layer 40, if the length is formed to be the same as the distance between the expansion joints of the bridge, the surface layer 40 can be formed on the bridge surface so that it crosses the vehicle traveling direction.
The running performance and riding comfort of the vehicle can be greatly improved without creating a joint at the abutting portion.

Furthermore, if the above-mentioned flexible polymer material is rubbed into the joints created by the widthwise abutting portions of the surface layer 40 after construction, a paved surface without joints can be obtained and the vehicle The running performance and riding comfort of the vehicle can be further improved.

In this embodiment, as the flexible polymeric material 41, a rubber material such as solid rubber or liquid rubber, or a two-component mixture of epoxy resin or urethane resin and a resin material having elasticity that cures at room temperature is used. However, in addition to these rubber-based and resin-based materials, abrasion-resistant aggregates such as ceramic powder, silica sand, and slabs,
By using a material containing short fibers (cut fibers) such as steel fibers, rigid fibers, and glass fibers, either alone or in combination, the abrasion resistance of the pavement surface can be further improved.

[Effect of idea]

Since the present invention is configured as described above, it has the following effects. That is, (a) the locking force of the wear-resistant member, that is, the resistance to falling off, can be significantly improved.

(b) The surface layer has excellent flexibility and can follow the deformation of the steel deck due to the wheel load action, preventing cracks from forming.

(c) The wheel load can be distributed and transmitted to the underlying layer, and rutting can be prevented.

(d) The surface layer can be produced in a factory, and can be easily transported wrapped around a drum, while also being easy to install.

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway perspective explanatory view showing the overall structure of a steel deck pavement road surface to which a surface layer according to an embodiment of the present invention is applied, and FIG. 2 is an enlarged plan view explanatory view showing the main parts of the same. FIG. 3 is an explanatory cross-sectional view taken along the line A-A in FIG. 10... Steel deck slab, 10a... Surface of steel deck slab, 2
0... Base layer, 20a... Surface of base layer, 30...
...Adhesive layer, 40... Surface layer, 40a... Surface of surface layer, 41... Flexible polymer material, 42... Flexible plate, a... Hole provided in flexible plate, 44 ……
Wear-resistant member, 44a... head of the wear-resistant member.

Claims (1)

[Scope of utility model registration request] It is composed of a base layer laid on the surface of the steel deck, and a surface layer placed on the surface of the base layer via an adhesive layer, and the surface layer is mainly formed of a flexible polymer material, and A plurality of wear-resistant members each having a substantially trapezoidal longitudinal section are embedded so that their heads are exposed on the surface of the surface layer, and the flexible member is provided with holes for fitting and locking each of the wear-resistant members. A surface structure for a steel deck paved road surface, characterized in that a flexible plate is integrally fixed within the surface layer.