JPH0246722B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a road joint structure and a road joint used in the road joint structure.

(Prior art) As a road joint, for example,
As disclosed in Japanese Patent No. 24441, it is known that a pair of corrugated end plates are disposed opposite to each other with a gap therebetween, and both sides of a seal plate are adhered to opposing surfaces of both corrugated end plates.

In addition, as a road joint structure using the road joint, a notch step is formed at the end of the floor slab facing each other with a gap in the road joint, and a cutout step is formed at the center between both the notch steps. The road joint is suspended from the horizontal beams built on the road surface on the sides of both notched steps.
A road joint structure is known in which concrete is poured on both sides of the road joint in this state.

In this case, in order to prevent the corrugated end plate from protruding from the road surface even when the top surface of the concrete wears out, the corrugated end plate should be installed so that its upper end is 2 to 3 cm below the road surface.
It must be installed so that it is low. For this reason, in the above road joint structure, a spacer is interposed between the horizontal beam and the road joint, and the road joint is installed so that its upper end is located below the road surface, and the free space at the road joint is A filler is placed in the gap to prevent concrete from flowing into the gap between both corrugated end plates during concrete pouring.

(Problems to be Solved by the Invention) However, in the above-mentioned road joint structure, since concrete is usually cast with a spacer interposed between the cross beam and the upper end surface of the road joint, Concrete cannot be placed above the top end surface. For this reason, the gap between the opposing concrete pieces at the road joint becomes wide, which impairs the running performance of vehicles passing through the road joint, and the adhesion between the corrugated end plate and the concrete also deteriorates. Further, there are problems such as water entering between the road joint and the concrete, causing water to leak under the bridge, or rusting on the road joint.

Further, in the above structure, since it is essential to construct the horizontal beams and install spacers, there is also the problem that it takes time and effort to adjust the height when installing the road joint.

Furthermore, since a portion of the poured concrete will cover the filler placed in the gap at the road joint, the end surface of the concrete above the corrugated end plate may not have the same wave shape as the corrugated end plate. Therefore, there is also the problem that the end face of concrete must be shaped after concrete is poured.

(Objective of the Invention) In view of the above, an object of the present invention is to improve the drivability of a vehicle passing through a road joint, and to improve the adhesion between the road joint and concrete.

(Means for Solving the Problems) In order to achieve the above object, the first invention provides concrete on the upper end side and back side of the corrugated end plate, covering the upper end face of the corrugated end plate and the concrete. The concrete is poured so that its surface is flush with the road surface and the end face of the concrete is flush with the corrugated end plate.

Specifically, the solution taken by the first invention is that a pair of corrugated end plates bent in a corrugated manner in the road width direction are provided at the end of the road facing each other through the clearance of the road joint, and the upper end surface thereof is bent in a waveform in the road width direction. concrete is positioned lower than the corrugated end plate and is disposed facing each other with a gap between them, and on the upper end side and back side of the corrugated end plate, concrete covers the upper end face of the corrugated end plate and covers the free side end face of the concrete. The concrete is formed into a corrugated end face shape that is flush with the opposing surface of the corrugated end plate, and the concrete is poured so that its surface is flush with the road surface.

In a second aspect of the invention, a template is temporarily attached to the upper end of each opposing surface of the corrugated end plate in a state where the upper end of the template substantially coincides with the road surface.

Specifically, the solution taken by the second invention is a pair of corrugated end plates in which the road joints, which are fixed to the concrete at the opposite end of the road through the gap at the road joint, are bent in a waveform in the road width direction. are provided facing each other with a gap between them, and a corrugated template formed in a corrugated shape following the corrugated end plate is placed on the upper end of the opposing surface of each of the corrugated end plates, with its upper end aligned with the road surface. The structure is such that it is temporarily attached.

(Function) According to the configuration of the first invention, concrete is poured on the upper end side and back side of the corrugated end plate, and the concrete covers the upper end face of the corrugated end plate, so that the concrete and the corrugated end plate Good adhesion with.

In addition, since the poured concrete covers the upper end surface of the corrugated end plate and the end face of the concrete on the gap side is flush with the opposing surface of the corrugated end plate, there is a gap between concrete pieces facing each other via the gap. Since it is possible to minimize the gap between the corrugated end plates to match the gap between the corrugated end plates, it is possible to narrow the gap between the opposing concrete pieces and the gap at the road joint.

According to the configuration of the second invention, after the road joint is directly fixed to the cross beam and concrete is poured, when the corrugated template attached to the upper end of the corrugated end plate is removed, the upper end surface of the corrugated end plate is placed on the road surface. Concrete is placed on the upper end side and the back side of the corrugated end plate, and the end face of the poured concrete on the gap side and the facing surface of the corrugated end plate are substantially coincident with each other.

(Example) Hereinafter, one example of the present invention will be described based on the drawings.

FIG. 1 shows a road joint A according to the present invention. This road joint A includes a pair of joint construction members 1, which are fixed to concrete at opposing road ends with a clearance at a road joint.
Consists of 1.

In the figure, reference numeral 2 denotes a corrugated end plate constituting the joint construction member 1, whose vertical plate surfaces are bent in a waveform in the road width direction and face each other with a gap 7 interposed therebetween.

At the upper end of the opposing surface 2a of the corrugated end plate 2, there is a corrugated template 3 whose vertical plate surface is bent in a waveform following the corrugated end plate 2, and its upper end protrudes from the upper end of the corrugated end plate 2. It is attached by tacking in the condition. In this case, the amount h of protrusion of the corrugated template 3 from the upper end of the corrugated end plate 2 is preferably about 2 to 3 cm. Further, the temporary attachment can be carried out, for example, by dotting the opposing surface 2a of the corrugated end plate 2 and the lower end of the corrugated template 3 from the side with a welding rod, that is, by forming a small fillet weld build-up, or This can be done by fixing with adhesive or a tightening device such as a vise. Note that this temporary attachment may be performed in advance at the factory, or may be performed at the site after the corrugated end plate 2 has been installed.

In addition, anchor members 4 and 5 are provided protruding from the back side of the corrugated end plate 2, that is, the surface in contact with post-cast concrete 15, which will be described later.
A bottom plate 6 is fixed to the lower end of the back side.

Furthermore, in this embodiment, both sides of a seal plate 8 made of a flexible material such as rubber are fixed to the opposing surfaces 2a of both corrugated end plates 2, 2. Both joint construction members 1, 1
are connected.

Next, a road joint structure using the road joint A according to the above embodiment will be explained based on FIGS. 2 and 3.

Figure 2 shows the road joint structure using the retrofit construction method.
2 is the opposing floor slab, 13 is the pavement, 14 is the notch step, 15 is post-cast concrete, and 16 is the weir board.

When constructing the road joint structure, first, the third
As shown in the figure, after forming notch steps 14, 14 at opposing road ends with a clearance 12,
With the joint construction members 1, 1 connected by seal plates 8 attached to the lower surface of 7, the horizontal rods 17 are constructed on the upper surfaces of the pavements 13, 13 on both sides of the notched steps 14, 14, and the joint is constructed. The members 1, 1 are suspended in the center between the cutout steps 14, 14.

Next, the intersection parts of the anchor members 4 and 5, distribution bars 18, buried reinforcing bars 19, and through bars 20 protruding from the corrugated end plate 2 are connected by welding or the like, and the lower end of the corrugated end plate 2 is Fix the weir plate 16. Then, the horizontal rod 17 is removed, and a concrete inflow prevention material such as urethane foam is inserted between both joint construction members 1,1.

Next, concrete is poured on the back sides of both joint construction members 1, 1 to a height that matches the upper end of the corrugated template 3, that is, to the same height as the road surface, to form post-cast concrete 15, and then , the concrete inflow prevention material and the corrugated template 3 are removed.

By doing as described above, as shown in FIG. 2, the corrugated end plates 2 are arranged so that their upper end surfaces are located below the road surface and face each other with a gap therebetween, and , so that a clearance side end surface 21 is formed on the upper end side and the back side of the corrugated end plate 2 so that it stands flush with the opposing surface 2a of the corrugated end plate 2 and has a surface that is at the same height as the road surface. A road joint structure is formed by pouring concrete 15.

In addition, instead of the road joint A of the above embodiment, a pair of corrugated end plates 2 which are bent in a corrugated manner in the road width direction and face each other with a gap 7 in between, and a pair of corrugated end plates 2 are provided between the corrugated end plates 2. It is also possible to use a formwork filler that protrudes above the upper end of the road and is bent in a waveform in the road width direction.

When using the road joint A according to this modification, after pouring concrete 15 so that the upper end of the formwork filler matches the road surface, the formwork filler is removed and the above-mentioned method is performed. A similar road joint structure is formed.

In addition, in the case of using the pre-installation method, before applying the pavement 13, a notch step 14 is formed at the end of the deck slab 11 by box cutting etc., and the joint construction member 1 is attached as in the case of the post-installation method. After that, post-cast concrete 15 is poured and finally paving 13 is applied.

In addition, in the case of using the super-advanced construction method, after the girder is erected on the piers, the deck reinforcements (main reinforcement, distribution reinforcement 18) are arranged, and the joint construction members 1 are corrugated using a leveler such as the horizontal beam 17. After holding the upper end of the template 3 to match the height of the road surface, the joint construction member 1 is fixed by welding its anchor members 4, 5, distribution bars 18, through bars 20, etc. Then, after the floor slab 11 is cast and the pavement 13 is laid, the corrugated template 3 is removed.

Furthermore, although the above embodiment describes an example in which the present invention is applied to a steel bridge, it is possible to apply the present invention to other types of road bridges such as PC girder bridges, RC girder bridges, and steel deck bridges. Of course.

In the case of the above-mentioned steel deck bridge, the joint construction member 1 extends the bottom plate 6 at the lower end of the corrugated end plate 2 toward the back side, fixes this extension to the steel deck by bolts or welding, and provides anchor members 4 and 5. You don't have to.

In addition, the sealing structure between the corrugated end plates 2, 2 may be achieved by using the seal plate 8 which is fixed to the corrugated end plate 2 in advance as in the above embodiment, or by using a back-up material such as a sponge between both the corrugated end plates 2, 2. A material may be interposed therebetween, and a liquid rubber sealing material may be filled on top of the backup material.

Furthermore, in the present invention, concrete means civil engineering materials that are poured and hardened, such as ordinary cement concrete, asphalt concrete, resin concrete, resin mortar, and synthetic resin materials.

(Effect of the invention) As explained above, according to the road joint structure according to the first invention, concrete is poured on the upper end side and back side of the corrugated end plate so as to cover the upper end face of the corrugated end plate. As a result, the adhesion between the concrete and the corrugated end plate is good, so water does not enter between the corrugated end plate and the concrete, causing water to leak under the bridge or rusting on the road joint.

Further, according to the first invention, concrete is
Casting that covers the upper end face of the corrugated end face plate, forms the free side end face of the concrete into a wave shaped end face shape that is flush with the opposing face of the corrugated end face board, and makes the surface of the concrete flush with the road surface. As a result, the gap between the concrete pieces facing each other via the gap can be narrowed to the extent that it almost matches the gap between the corrugated end plates, improving the running performance of vehicles passing through the road joint.

According to the road joint according to the second invention, after pouring concrete with the upper end of the corrugated template substantially aligned with the road surface, the above-mentioned road joint can be formed by removing the corrugated template that has been temporarily attached. The partial structure can be constructed simply and reliably.

In addition, since the height of post-cast concrete can be determined using the corrugated template, the work of aligning the corrugated end plate with the pavement surface and the work of matching the heights on both sides can be omitted, and it is easier to handle than with the corrugated template. The final concrete height can be determined using easy-to-use materials, making construction extremely easy.

According to the second invention, there is no need to manually shape the free space side end faces of concrete after concrete is poured, and the corrugated templates can prevent concrete from flowing between the corrugated end faces. .

Furthermore, according to the second invention, there is no need for a spacer for adjusting the height of the corrugated end plate or for filling for corrugation formation and prevention of concrete inflow, so that workability can be improved.

[Brief explanation of drawings]

FIG. 1 is a perspective view of a road joint that is an embodiment of the second invention, FIG. 2 is a sectional view of a road joint structure that is an embodiment of the first invention, and FIG. FIG. 3 is a cross-sectional view showing a process of constructing the road joint structure using the road joint structure. A... road joint, 1... joint construction member, 2... corrugated end plate, 3... corrugated template, 4,
5... Anchor member, 6... Bottom plate, 7... Gap,
8... Seal board, 11... Floor board, 12... Play area,
13...Pavement, 14...Notch step, 15...Post-cast concrete, 17...Horizontal rod, 21...Concrete end face.

Claims (1)

[Scope of Claims] 1. A pair of corrugated end plates bent in a corrugated manner in the road width direction are provided at opposite end portions of the road through a gap in the road joint portion, the upper end surfaces of which are positioned below the road surface, and are arranged facing each other with a gap in between,
Concrete is formed on the upper end side and the back side of the corrugated end plate so as to cover the upper end face of the corrugated end plate, and to form a free space side end face of the concrete into a corrugated end face shape that is flush with the opposing surface of the corrugated end plate. A road joint structure characterized in that the concrete surface is poured flush with the road surface. 2. A road joint that is fixed to concrete at opposing road edges through a clearance at a road joint, in which a pair of corrugated end plates bent in a corrugated manner in the road width direction are provided facing each other with a gap in between; A corrugated template formed in a corrugated shape imitating the corrugated end plate is temporarily attached to the upper end of the opposing surface of each of the corrugated end plates with its upper end aligned with the road surface. Features a road joint.