JPS5931762Y2 - Pavement structure of road joints in steel deck bridges - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a pavement structure at a road joint in a steel deck bridge.

Generally, steel deck bridges are paved with asphalt, and conventionally, at road joints, for example, a pair of corrugated end plates are installed facing each other, and a paving material such as concrete or asphalt is placed on the back of the end plates. The poured concrete has been adopted.

These end plates protect the thin layer of joint pavement, but this type of pavement structure is expensive due to the use of end plates, and when constructed, it is difficult to make the heights of both end plates the same. It is necessary to suspend the end plate using a hanging tool such as a horizontal rod and adjust the height, which has the drawback of requiring a lot of labor and time.

Finger joints, in which steel fingers protrude in the direction of the bridge length, are also applied to steel deck bridges. Wear is unevenly distributed on the asphalt pavement, and steps are likely to occur at the boundary between the pavement and the steel plate, which has a negative impact on running performance.

In addition, as shown in Figure 5, for drainage purposes, the pavement of a normal road bridge a has a central part d on top of a flat steel deck C, and a raised central part d, and a lower ground covering part e at both ends, on the e side. Because of the pouring process, the conventional expansion joint has the disadvantage that it is difficult to maintain the same height when the upper edge is paved.

In view of the fact that it is not possible to obtain a thick pouring layer on the steel deck at the road joints of steel deck bridges, the present invention uses resin as a paving material for the road joints of steel deck bridges. By applying a high-strength resin paving material that contains a high-strength resin, the joint pavement has a structure in which a plurality of tooth-shaped projections protrude from the base to the gap, and this joint pavement is supported by a tooth-shaped support plate. , an interlocking pavement structure with high load-bearing strength.

DESCRIPTION OF THE PREFERRED EMBODIMENTS The configuration of the present invention will be described below with reference to the drawings.

In the pavement structure 1 shown in FIG. 1, 2 is a joint pavement and is supported by tooth-shaped support plates 3 made of steel fixed to the ends of opposing steel deck slabs 7 with a gap between the road joints.

The tooth-shaped support plate 3 has a plurality of tooth-shaped protrusions 5 protruding toward the clearance side from a base 4 fixed to the upper surface of the steel deck 7, and each tooth-shaped protrusion 5 is provided at intervals in the road width direction. The tooth profile support plates 3, 3 on both sides are attached to each other's tooth profile protrusions 5.
, 5 are in mesh with each other with a meshing play 6.

The joint pavement 2 is formed of a resin paving material and follows the shape of the tooth profile of the tooth profile support plate 3.

At the base 8 of the joint pavement 2, there are main reinforcements 10 extending in the road width direction.
In some cases, reinforcing bars 11 are buried in the bridge length direction from the base 8 side to the tip of the tooth-shaped protrusion 9.

The joint pavements 2, 2 are formed by temporarily installing a corrugated formwork between the joints and casting a resin paving material on the back of the formwork.

As the resin paving material, resin concrete, resin mortar, or synthetic resin is applied.

A binder such as a resin adhesive or tar rubber latex emulsion is applied to the upper surface of the steel deck 7 to prevent the steel deck 7 from rusting and to prevent the concrete layer from peeling off.

In addition, the interface between the joint pavement 2 and the bridge surface pavement 2 is formed into a wave-shaped interface 13 similar to that of the meshing gap 6, so that even if a step occurs at this interface, the driving feeling will not be deteriorated. You can also do that.

In the figure, 14 is a rib and 15 is a main girder.

The above embodiment can be equipped with water stop means shown in FIGS. 2 to 4 described below.

That is, the water stop means shown in FIG. 2 has an extensible plate 17 formed of an elastic material such as rubber fixed to the opposing surface of support plates 16 and 16 fixed to the end faces of the steel deck plates 7, 7. It is.

The water stop means shown in FIG. 3 has a support frame 19 attached to the bottom flanges 18, 18 of the main girder 15.15, and a gutter body 20 installed on the support frame.

Further, in the water stop means shown in FIG. 4, a back-up material 21 is interposed in the interlocking gap 6 with both sides tightly attached to the end surfaces of the joint pavements 2, 2, and a filling rubber material 22 is placed on top of the back-up material. It is filled.

As described above, according to the present invention, in consideration of the characteristic that in steel deck bridges, it is not possible to provide a thick pouring layer on the steel deck, the joint pavement is formed with a resin paving material, and this Since the joint pavement is supported by the tooth-shaped support plate, the load-bearing strength of the joint pavement is improved, and the upper edge of the protruding edge of the joint pavement is prevented from breaking or missing, making it possible for vehicles to maintain good condition over a long period of time. This provides an excellent effect of maintaining running performance.

Furthermore, the present invention has excellent effects in that height adjustment in the road width direction at road joints is easy and construction is easy.

[Brief explanation of the drawing]

The drawings illustrate embodiments of the present invention, and FIG. 1 is a perspective view showing a road joint section in the bridge length direction, and FIGS. 2 to 4 show water stop means that can be installed at the road joint section. FIG. 5 is a schematic cross-sectional view of the road bridge in the width direction. 1... Pavement structure, 2... Joint pavement,
3...Tooth shaped support plate, 4...Base, 5...
...Tooth profile protrusion, 6...Matching play, 7.
...Steel deck version.

Claims (1)

[Scope of utility model registration request] In a steel deck bridge where a steel deck slab is installed on the main girder and paving is performed on the steel deck slab, the steel deck slab is installed at the end of the steel deck facing each other with a clearance at the road joint. A tooth-shaped support plate is provided with a base fixed to the base and a plurality of tooth-shaped protrusions projecting from the base toward the free space side and spaced apart in the road width direction, with a wave-shaped engagement gap between the tooth-shaped protrusions. A pavement structure for a road joint in a steel deck bridge, characterized in that a joint pavement made of a resin-containing resin paving material is formed on the tooth-shaped support plate, following the shape of the tooth profile of the tooth-shaped support plate. .