JPH0641909A - Road seam expansion device - Google Patents

Abstract

(57) [Summary] [Purpose] To allow the seal plates 11 to be easily attached to the vertical plates 2 and 2 that face each other with a play between them. [Structure] The seal plate 11 extends in the longitudinal direction of the seam, and the central portion is disposed between the vertical plates 2 and 2 or below the vertical plates 2 and 2, and both side portions are the vertical plates 2. , 2 are arranged outside the vertical plates 2 and 2, and both sides of the vertical plates 2 are fastened by bolts to the outer surface of the vertical plate 2 via a holding plate 12 extending in the longitudinal direction of the joint.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a road joint expansion / contraction device.

[0002]

2. Description of the Related Art As a road joint expansion / contraction device, a pair of corrugated vertical plates which are bent at a seam portion of a road bridge and extend in a wavy shape in the longitudinal direction of the seam and a corrugated clearance is formed between the corrugated vertical plates. And a seal plate which is interposed between the two corrugated vertical plates and has a bending portion in the center and both side portions of which are connected to the inner surfaces of the corrugated vertical plates facing each other (special feature). (See Japanese Patent Publication No. 57-25682).

In the above-mentioned expansion / contraction device, both sides of the rubber seal plate are bonded to the corrugated vertical plate by vulcanization adhesion. It is also practiced to bond the sealing plate to the corrugated vertical plate with an adhesive.

[0004]

However, although attachment of the seal plate by vulcanization adhesion requires high bonding strength with respect to the vertical plate, it is necessary to perform the bonding work in the factory, and it is not easy to perform reliable bonding. Requires. In addition, since the vertical plate and the seal plate are pre-assembled at the factory, the packaging becomes bulky, a large inventory space is required, and the amount of material that can be transported at one time to the site is small, resulting in poor efficiency. At the same time, the cargo collapse easily causes damage.

Due to the above-mentioned transportability, the length of the joint member formed by connecting the vertical plate and the seal plate is usually 1 to 2 m. It is necessary to connect the joint members separately in the longitudinal direction of the joint. In this connection, it is necessary to connect the seal plates of the joint members adjacent to each other, but there is a problem of water leakage from the connection portion, and it is actually difficult to obtain high water shutoff.

Further, in the case of a method of adhering the seal plate to the vertical plate with an adhesive locally, strong adhesion cannot be expected, and there is a problem that the seal plate falls off from the vertical plate in a relatively short period of time.

Further, when the distance between the opposing vertical plates is small,
Bonding work between the seal plates that have been vulcanized and bonded to the vertical plate described above,
Any of the adhesion work with adhesive to the vertical plate of the seal plate,
Workability is poor.

[0008]

SUMMARY OF THE INVENTION The present invention addresses the above problems by allowing a seal plate to be locally mounted on the outer surface of a vertical plate by utilizing a bolt and a pressing plate. .

That is, a means therefor is provided with a pair of vertical plates, which extend in the longitudinal direction of the seam at the seam portion of the road bridge and are opposed to each other with a clearance, and a seal plate for sealing the clearance. The seal plate extends in the longitudinal direction of the seam, and the central portion is arranged between the vertical plates or below the vertical plates, and both side parts are arranged under the vertical plates and outside the vertical plates. Each of the both side portions is fixed to the outer surface of the vertical plate by a bolt through a holding plate extending in the seam longitudinal direction, and concrete is cast at the road surface height on both outer sides of the both vertical plates. It is a road joint expansion and contraction device characterized by being

[0010]

In the above-described road joint expansion / contraction device, since both sides of the seal plate are attached to the vertical plate by using the holding plate and the bolt, a plurality of vertical plates are abutted in the longitudinal direction of the seam and are connected to each other. The seal plate can be made continuous over the plurality of vertical plates, and the problem of water leakage from the connecting portion between the seal plates as in the conventional case is eliminated.

Since the side portion of the sealing plate is pressed against the vertical plate by the pressing plate, it is not necessary to use a vulcanization bonding means or an adhesive agent for connecting the vertical plate and the sealing plate to this vertical plate. The seal plate can be installed on site to improve the water blocking performance between the seal plate and the vertical plate. In this case, the pressing plate itself does not have to have the same length as the vertical plate, and a plurality of pressing plates shorter than that may be combined to press each part of the seal plate against the vertical plate.

However, since the sealing plate has a structure to be attached to the outer surface of the vertical plate, the mounting work of the sealing plate can be easily carried out by utilizing a wide space before placing concrete on the outside of the vertical plate. it can.

[0013]

Therefore, according to the above-described road joint expansion / contraction device, both side portions of the seal plate are passed under the both vertical plates and fixed to the outer surfaces of the both vertical plates by the bolts through the holding plates. It becomes possible to easily attach the seal plate to the vertical plate by utilizing the large space before placing concrete on the outside of the vertical plate without using a sulfur adhesive or an adhesive. A high water-stopping property can be obtained by pressing down.

[0014]

Embodiments of the present invention will be described below with reference to the drawings.

<Example 1> This example is shown in FIG.

In FIG. 1, reference numeral 1 is a road seam expansion / contraction device constructed at a seam portion of a road bridge, and a pair of vertical plate vertical plates 2 extending in the longitudinal direction of the seam and provided with a gap 3 therebetween. Two
The upper and lower portions of both vertical plates 2 and 2 are provided with an upper sealing means 4 and a lower sealing means 5 for stopping water in the play 3, respectively. Concrete 10 and 10 are cast at the road surface height on the step-down portions 6 and 6 which are formed to be lower than the road surfaces on both outer sides of 2.

Both of the vertical plates 2 and 2 are provided with road surface portions 2a and 2a projecting inward at their upper ends, and a plurality of stud bolts 21 are provided on the outer surface of the lower ends at intervals along the joint longitudinal direction. It will be done. Then, in the road joint, a plurality of vertical plates 2 having a unit length (for example, 1 to 3 m) are abutted in the longitudinal direction of the joint and connected.

The upper sealing means 4 extends continuously in the longitudinal direction of the seam and is fixed to the inner surfaces of the vertical plates 2 and 2 facing each other. The supporting members 7, 7 having an inverted L-shaped cross section are connected to each other in the longitudinal direction of the seam. A horizontal support plate 8 continuously extending in the longitudinal direction of the seam over the vertical plate 2 and supported on the support members 7, 7.
The horizontal support plate 8 is composed of a sealing material 9 filled between the vertical plates 2 and 2 facing each other.

The horizontal support plate 8 of this embodiment is formed of a rubber plate, is not fixed to the horizontal portions of the support members 7, 7, and is simply placed. There is. The sealing material 9 is formed by pouring a liquid rubber sealing material onto the horizontal supporting plate 8 and is adhered to the upper surface of the horizontal supporting plate 8 and also the inner surfaces of the vertical plates 2 and 2 and the road surface portion 2a. Is adhered to the lower surface and the tip surface of the.

The lower sealing means 5 includes a sealing plate 11 extending continuously in the longitudinal direction of the seam over a plurality of vertical plates 2 extending in the longitudinal direction of the seam, and a longitudinal plate having both side portions of the sealing plate 11 extending in the longitudinal direction of the seam. It is provided with a pressing plate 12 which is pressed against the outer surfaces 2 and 2.

That is, the seal plate 11 is made of rubber and has a flexible portion at the center, and has bolt insertion holes (long holes) on both sides at the same intervals as the stud bolts 21 of the vertical plate 2. It has been opened. The pressing plate 12 is made of stainless steel, and has a vertical plate-shaped pressing portion that presses the side portion of the seal plate 11 against the outer surface of the vertical plate 2, and the lower end of the pressing portion passes under the vertical plate 2. A support portion that horizontally protrudes inward of the vertical plate 2 and supports the side portion of the seal plate 11 from below, and a state in which the center portion of the seal plate 11 is bent upward and extends diagonally upward from the tip of the support portion to the inside of the vertical plate. And a flexure holding portion for holding the same. Then, in the pressing portion, bolt insertion holes (long holes) are formed at the same intervals as the stud bolts 21 of the vertical plate 2.

Thus, the seal plate 11 has the bending portion disposed between the vertical plates 2 and 2, and both side parts are passed under the vertical plates 2 and 2 to the outer surface of the vertical plates 2 and 2. It is clamped and fixed by a bolt 21 via the holding portion of the holding plate 12. That is, the bolt 21 is made to project from the bolt insertion hole of the seal plate 11 and the pressing plate 12, and by applying a nut to this bolt 21, the seal plate 1
1 is fastened to the vertical plate 2.

Further, the vertical plate 2 is provided with an anchor 14 projectingly provided on the outer surface thereof, and the anchor 14 is connected to an existing rebar 15 through a through bar 16.

In FIG. 1, 17 is a weir plate that closes the space between the vertical plate 2 and the step-down portion 6 to prevent concrete leakage into the seam gap when pouring concrete, 19 is a floor slab, and 20 is pavement. is there.

Next, a method of constructing the road joint expansion / contraction device 1 will be described in the order of steps. In addition, the vertical plate 2 has a support member 7 in advance.
Is fixed.

The upper surfaces of the pavements 20, 20 on both sides of the step-down parts 6, 6 such that the upper ends of the pair of vertical plates 2, 2 are aligned with the road surface height (or slightly lower than the road surface height). The suspension rod 22 is passed to and suspended. Anchor 1
4 is connected to the existing reinforcing bar 15 through the reinforcing bar 16.

The above steps are sequentially performed over the entire length of the joint in the longitudinal direction, and the vertical plates 2 and 2 adjacent to each other in the longitudinal direction of the joint have their end faces abutted to each other. In this case, the butt portion is simply welded (spotted) if necessary.

The seal plate 11 is inserted between the vertical plates 2 and 2, and both side portions thereof are passed under the vertical plates 2 and 2 and turned to both outsides of the vertical plates 2 and 2. The seal plate 11 is a vertical plate 2, 2
It may be laid on the step-down parts 6 and 6 before the pair is installed.

The bolt 21 is projected from the bolt insertion hole so that both sides of the seal plate 11 are brought into contact with the outer surface of the vertical plate 2. In this case, both sides of the seal plate 11 are temporarily attached to the outer surface of the vertical plate 2 with double-sided adhesive tape.

The pressing plate 12 is lifted from below the vertical plate 2, the pressing part is applied to the seal plate 11 so that the bolt 21 is projected from the bolt insertion hole, and the supporting part supports the sealing plate 11 to support the flexure holding part. The central portion of the seal plate 11 is bent upward. Then, a nut is applied to the bolt 21 to fix the side portion of the seal plate 11 to the outer surface of the vertical plate 2 with the pressing plate 12 interposed therebetween. In this case, the vertical plate 2
And the dimensional error between the seal plate 11 and the pressing plate 12 is absorbed by utilizing the fact that the bolt insertion holes of the seal plate 11 and the pressing plate 12 are long holes. The sealing plate 11 is clamped and fixed over the entire length in the longitudinal direction of the seam.

The hanging rod 22 is removed from the vertical plates 2 and 2, the weir plate 17 is fixed to the back surface of the holding portion of the holding plate 12, and concrete is attached to the step-down portions 6 and 6 on both outsides of the vertical plates 2 and 2. 1
Drive 0 and 10 to the road height.

The horizontal support plate 8 is placed on the support members 7, 7 of the vertical plates 2, 2. For this placement, the horizontal support plate 8
May be inserted from between the road surface portions 2a of the vertical plates 2 and 2 or may be inserted from the side of the vertical plates 2 and 2 (one end in the longitudinal direction of the joint).

The sealing material 9 is filled on the horizontal support plate 8 from between the road surface portions 2 a and 2 a. In this case, an adhesive may be applied to the surface of the vertical plate 2 that comes into contact with the sealing material 9 in a factory or the like to improve the adhesiveness with the sealing material 9 and the rust prevention.

The above construction method is an example, and for example,
The lower sealing means 4 can be constructed before the concrete 10, 10 is placed, and the hanging rod 22 can be removed before the lower sealing means 5 is constructed.

In the case of the above-mentioned embodiment, the water blocking between the vertical plates 2 and 2 is performed by the upper sealing means 4 and the lower sealing means 5. Then, when the space between the vertical plates 2 and 2 becomes narrower due to the extension of the road bridge, the horizontal support plate 8 of the upper sealing means 4 bends upward or downward, allowing the extension of the road bridge.

Example 2 This example is shown in FIG.

That is, in this example, the vertical plate 32 is a vertical plate having no road surface portion, and the support member 37 of the upper sealing means 34 is used.
Is composed of a shaft portion of a bolt screwed into the vertical plate 32, a horizontal support plate 48 is supported on the bolt shaft portion, and a sealing material 49 is filled on the horizontal support plate 48. Regarding the lower sealing means 35, both side portions of the seal plate 41 are folded back at the upper ends of the holding portions of the holding plate 42, and the holding portion and the folded portion 41a are fastened together to the vertical plate 32. In this case, even if a relatively large load is applied to the seal plate 41, this load can be received by the pressing plate 42 via the folded-back portion 41a, so that the bolt insertion hole of the seal plate 41 is deformed or torn due to the load. As a result, the seal plate 41 does not fall off.

The pressing plate 42 is not bent because it has the bending holding portion as in the previous embodiment, and therefore the central portion of the sealing plate 41 is bent downward.

Example 3 This example is shown in FIGS. 3 and 4.

That is, in the road joint expansion and contraction device 51 of this example, the corrugated vertical plates 52 and 52 are used, the corrugated play 53 is formed between them, and the lower sealing means 55 is provided at the lower end of the corrugated vertical plates 52 and 52. Has been. Each corrugated vertical plate 52 is 1
It has a corrugated part of a pitch or more, and the end faces of the corrugated vertical plates 52, 52 adjacent to each other in the longitudinal direction of the seam are arranged so as to be brought into contact with each other. The corrugated vertical plates 52 are arranged on the step-down portions 6 which are formed lower than the road surface on both sides of the floor slab.

Further, at the lower back portion of each corrugated vertical plate 52, the edge on the side of the corrugated space is formed in a corrugated shape following the corrugated vertical plate 52, and the opposite edge is formed linearly in the longitudinal direction of the joint. The bottom plate 57 is fixed. A dam plate 58 is fixed to the back of the bottom plate 57 to prevent the concrete 10 cast in the step-down portion 6 from leaking into the space between floor slabs. Further, anchors 59, 59 are provided so as to project from the back surface of each corrugated vertical plate 52.

The lower sealing means 55 is basically the same as that of the second embodiment, and has folded portions 61a, 61a on both sides.
The above-mentioned both sides of the seal plate 61 having 61a
The corrugated vertical plates 52, 52 are fastened and fixed to each other by a screw member. The difference from the second embodiment is that in this example, the seal plate 61 and the pressing plate 62 are formed in a corrugated shape.

A padding 56 is provided between the corrugated vertical plates 52, 52. The padding 56 can be formed by filling a liquid rubber sealing material, inserting a foamed plastic molded product, filling and foaming a foamed plastic material, or the like.

The present invention can be carried out as follows in addition to the above embodiments.

(1) In the third embodiment, as the seal plate, a molded rubber plate having a flexible portion formed in the center in advance and bent in a wavy shape in the longitudinal direction of the seam can be used. However, the flat rubber is locally deformed. At the very least, it may be attached to the corrugated joint member.

(2) For the vertical plate and the holding plate, a galvanized steel plate or the like can be used in addition to the ordinary steel plate and the stainless steel plate.

(3) In the third embodiment, the holding plate may have a corrugated portion having a half pitch or one pitch or more.

(4) The seal plate may be made of a flexible material other than rubber.

(5) The seal plate does not necessarily need to be continuous over the entire length of the joint, and a plurality of seal plates may be connected.

[Brief description of drawings]

 The drawings show an embodiment of the invention,

FIG. 1 is a sectional view of a road joint expansion / contraction device according to a first embodiment.

FIG. 2 is a sectional view of a road joint expansion / contraction device according to a second embodiment.

FIG. 3 is a plan view showing a road seam expansion / contraction device of Example 3 with a part thereof cut away.

FIG. 4 is a cross-sectional view showing a road seam expansion / contraction device according to a third embodiment with a part cut away.

[Explanation of symbols]

 1 Road seam expansion and contraction device 2,52 Vertical plate 3,53 Corrugated play space 10 Concrete 11,41,61 Seal plate 12,42,62 Holding plate 21 Bolt

Claims (1)

[Claims] 1. A road bridge comprising a pair of vertical plates extending in a longitudinal direction of a seam and opposed to each other with a clearance, and a seal plate for sealing the clearance, wherein the seal plate is a seam. It extends in the longitudinal direction, the central portion is arranged between the vertical plates or below the vertical plates, and both side parts are arranged under the vertical plates and outside the vertical plates. Each of them is fixed to the outer surface of the vertical plate with bolts via a holding plate extending in the seam longitudinal direction, and concrete is cast at the road surface height on both outer sides of the both vertical plates. Road seam expansion device.