JPH083164B2 - Expansion joint device for bridge - Google Patents

Description

TECHNICAL FIELD The present invention relates to an expansion joint device for a bridge.

[Prior Art] Conventionally, this kind of thing is as follows.

 There are a steel comb type and a rubber type.

In the steel comb type, a steel material is processed into a comb shape at the ends of the bridge girders, and both ends are attached according to the height of the combined road surface.

In the rubber type, the ends of the bridge girders are processed with rubber, and rubber plates are sandwiched from both ends to attach at the height of the road surface.

Both ends of the joint are fixed and supported using concrete according to the height of the road surface.

[Problems to be Solved by the Invention] The conventional techniques described above have the following problems.

1) Both the steel comb type and the rubber type are attached at both ends of the joint at the height of the road surface, and even with concrete at both ends, a road surface drop is inevitable, and the running performance is poor.

In addition, as the asphalt pavement wears, its head increases.

2) Since the joint is exposed on the road surface, stones and mud tend to be clogged.

Therefore, the movement of the girder is hindered and the joint portion is damaged.

3) Noise occurs when the drop between the joint and the pavement becomes large.

The present application has been made in view of such problems that have the conventional techniques, and an object thereof is to provide a device capable of solving the above problems.

[Means for Solving the Problems] In order to achieve the above object, the present invention is as follows.

According to the present invention, a flat rectangular expansion joint device main body 2 includes a flat rectangular bottom plate 3A and a load-supporting pavement saucer 3 constituted by vertically connecting square tubular side walls 3B on an outer peripheral upper surface of the bottom plate. Along the left and right with a predetermined spacing D, the upper portion of the outer peripheral surface of the rectangular tubular side wall 3B in each of the load supporting pavement saucers 3
By attaching the movement amount dispersion water blocking rubber 4 to 3B1, the predetermined interval D portion is closed, and further, on the lower surface of the bottom plate 3A and the lower portion 3B2 of the outer peripheral surface of the rectangular tubular side wall 3B in each of the load supporting paving pans 3. The cushioning rubber plate 5 is attached, and the cushioning rubber plate 5 and the movement amount dispersion water blocking rubber 4 are integrally bonded and coupled, and a small gap 5A is formed between adjacent cushioning rubber plates 5 to expand and contract. End fixing angles 6 are attached to the left and right ends of the joint device body 2 via cushioning rubber plates 5, and a suitable number of anchor bolts 7 are attached to horizontal portions of the end fixing angles. It is a device.

[Action] The present invention acts as follows.

1) Dispersion of movement amount The water-stopping rubber has a role of water-stopping and the movement amount is finely dispersed in the structure itself of the expansion joint device for bridge,
The movement is not concentrated in one place.

2) The buffer rubber plate plays a role of smoothly buffering various vibrations and rotations.

3) The waterproof rubber plate is sealed with a rubber plate to prevent water from leaking from the installation location.

4) The load-supporting pavement saucer is also an intermediate material for the movement amount dispersion, but it is a metal saucer with the same strength as concrete, especially at the height where concrete is placed on the girder. Also,
The pavement material has a bowl shape so that it does not get into the saucer and peel off.

Furthermore, the pavement material is coated with a primer (adhesive) on the entire surface to make the final pavement.

End fixing angles are provided at both ends of the expansion joint for fixing to the girder, and are fixed by anchor bolts.

Anchor bolts are bolts that fix expansion joints at both ends of the girder and install them.

Reinforcing bars will be used as needed after the expansion joint is installed.

Embodiments of the Invention Embodiments will be described with reference to the drawings.

 1 is the expansion joint device for bridges of the present invention.

Reference numeral 2 denotes a flat rectangular expansion joint device body. A flat rectangular bottom plate 3A and a load-supporting pavement saucer 3 constituted by vertically arranging square tubular side walls 3B on the outer peripheral upper surface of the bottom plate are connected to the front, rear, left, and right of the plane. At a predetermined distance D, and the upper portion 3B of the outer peripheral surface of the rectangular tubular side wall 3B of the angular load supporting pavement tray 3
A predetermined distance D portion is closed by attaching the movement amount dispersion waterproof rubber 4 to 1 and further, the lower surface of the bottom plate 3A and the lower portion 3B2 of the outer peripheral surface of the rectangular tubular side wall 3B in the angular load supporting paving pan 3 are closed. The buffer rubber plate 5 is attached, and the buffer rubber plate 5 and the moving amount dispersion water blocking rubber are integrally bonded and connected to each other, and the adjacent buffer rubber plate 5 is attached.
A small gap 5A is formed between them.

Reference numeral 6 designates end fixing angles attached to the left and right ends of the expansion joint device main body configured in a rectangular shape as described above via the cushioning rubber plates 5, and a suitable number of horizontal end portions of the end fixing angles. Anchor bolt 7 is attached.

The specific dimensions are as follows.

The load-supporting pavement tray 3 is a bowl-shaped steel pipe or cast iron having an outer diameter of 50 mm and a thickness of 5 mm, and has an inner side of 40 mm and a depth of about 35 mm.

The distance D between the load-supporting pavement trays 3 is about 13 mm, the small gap 5A is about 3 mm, and the end fixing angle 6 is 1500 mm.
It is of a degree.

Further, the materials for the moving amount-dispersed waterproof rubber 4 and the buffer rubber plate 5 are cast from chloroprene rubber.

Next, a construction method of the expansion joint device for bridge 1 will be described.

First step The expansion joint device for bridge 1 set to a predetermined height by floor-cutting or notching the floor slabs 9A, 10A of the adjacent bridge girders 9, 10 desired to be connected by the expansion joint device for bridge 1 The processed parts 9A1 and 10A1 for mounting are formed.

Second step: Machining parts 9A1, 10A1 for mounting are processed with mortars 9A2, 10A2.

Third step: The expansion joint device for bridge 1 is attached to the processing part for attachment and fixed with anchor bolts 7.

In this case, the reinforcing bolt 11 is welded and fixed to the anchor bolt 7 as needed.

Fourth step Concrete 12 up to the height of the floor slabs 9A and 10A is placed on both ends of the expansion joint device 1 for bridge.

Fifth step A primer (adhesive) is applied to the entire upper surface of the expansion joint device for bridge 1.

6th step Asphalt pavement 13 is applied to the road surface height to complete the general pavement.

[Effects of the Invention] Since the present invention is configured as described above, it has the effects described below.

1) Since most of them are commercialized at the factory, the installation time at the site is shortened.

2) Asphalt pavement can be done on the bridge surface as well as on the road.

3) The finish of the road surface is also uniform with no steps or settling.

[Brief description of drawings]

FIG. 1 is a plan view with a part omitted, FIG. 2 is an explanatory view for explaining a mounting state along with a cross section taken along the line AA, and FIGS. 3 and 4 are enlarged views of relevant parts. 1 ... Expansion joint device for bridge, 2 ... Expansion joint device main body, 3 ... Load support pavement pan, 4 ... Dispersion water stop rubber 5 ... Buffer rubber plate, 6 ... End fixed angle, 7 ... …Anchor bolt.

Claims (1)

[Claims] 1. A flat-shaped expansion joint device main body (2) comprises box-shaped load-supporting pavement pans (3) having an open upper surface and arranged at predetermined intervals (D) in front, back, left and right of the plane.
A predetermined distance (D) portion is closed by attaching a movement amount dispersion water blocking rubber (4) to the upper portion (3B1) of the outer peripheral surface of the rectangular tubular side wall (3B) of each load supporting pavement saucer (3), Further, a cushion rubber plate (5) is attached to the lower surface of the bottom plate (3A) and the lower portion (3B2) of the outer peripheral surface of each tubular side wall (3B) in each of the load supporting pavement saucers (3). The shock-absorbing rubber plate (5) and the moving amount-dispersing waterproof rubber (4) are integrally bonded and bonded, and a small gap (5A) is formed between the adjacent shock-absorbing rubber plates (5), so that the expansion joint device main body ( End fixing angles (6) are attached to both left and right ends of 2) via cushioning rubber plates (5),
An expansion joint device for a bridge, characterized in that an appropriate number of anchor bolts (7) are attached to the horizontal portion of the end fixing angle.