JPH09209305A - Joint structure of bridges - Google Patents

Abstract

PROBLEM TO BE SOLVED: To absorb expansion and contraction of a bridge due to temperature change by arranging a plurality of plates of which opposed angle parts are made round side by side, insertingly crossing the plates between bridges through fixed clearances, and insertingly fitting slide bars into respective hinges. SOLUTION: The angle parts of opposed bridge are cut out into L-shapes so as to form mounting parts 7, and many plates 3 are arranged side by side so that the larger width side of the plate is put on the pier girder side. In this arrangement, the clearance is larger than the thickness of the plate 3 capably of being slided with each other. An L-shaped plate 6 is provided with hinges 8 in the same lines with the hinges 7 of the bridge 1, the plates 3 fixed to the L-shaped plates 6 are insertingly crossed between the bridges 1 through fixed clearance so that their rounded parts are confronted with each other. When strong vibration in the vertical direction is generated, the crossing width of the plates 3 is contracted and the vibration is absorbed with the rounded angle parts. The crossing width is contracted up to the position where the opposed plates are not put out of joint, and the maximum contraction is at the contact point of the bridge lower parts.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a joint structure for a joint portion of a road bridge such as a bridge or an elevated road, and more particularly to a joint structure for a bridge in which a pair of plates facing each other with a gap provided therebetween.

[0002]

2. Description of the Related Art Conventionally, a joint structure of a joint portion of a road bridge such as a bridge or an elevated road must be able to escape expansion and contraction due to temperature change of the bridge, and have good durability and runnability.

For example, as a joint structure of a seam portion of a road bridge such as a bridge or an elevated road, as shown in FIG. 5, reinforcing bars are arranged perpendicularly to the guideway surface, and an elastic member is interposed between the arranged reinforcing bars. A Maurer-type expansion / contraction device, or as shown in FIG. 6, a plate-shaped body is arranged to face the finger-shaped body with a play,
A finger type expansion / contraction device in which an expansion / contraction member is arranged below the plate body thus arranged is used.

[0004]

However, in the above-mentioned Maurer-type telescopic device and finger-type telescopic device, a cushion material is arranged in the lower part or a cushion structure is provided to improve running performance. It is not of earthquake resistant structure. It has no effect on strong shaking.
This aims to escape expansion and contraction due to temperature changes in the bridge.

SUMMARY OF THE INVENTION The present invention has been made to solve these conventional problems, and it is an object of the present invention to provide a bridge joint structure capable of absorbing not only expansion and contraction due to temperature change of the bridge but also strong vibrations in the vertical and horizontal directions. .

[0006]

The bridge joint structure of the present invention is a bridge joint structure in which opposing bridges are joined via bridge piers, and the corners of the opposing bridges are cut out in an L shape. Along with forming the mounting portion, the plate body in which the opposite corner portions are formed in R is made horizontally long and arranged at intervals wider than the thickness of the plate body, and a plurality of plates are arranged in parallel, and an L-shaped plate is formed on the side portion on the corner side. It is fixed and integrally formed, and a hinge is attached to the back surface of the L-shaped plate on the same line as the hinge formed on the bridge connecting device. The plate body is inserted and crossed toward each other, and a sliding rod is attached to each hinge.

By using the joint structure of the present invention, expansion and contraction due to temperature change of the bridge can be escaped, and vibrations of the opposed bridge can be absorbed by the opposed plates having play. Moreover, the durability and the running property are good.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. The present invention is not limited to the illustrated embodiment, but may be used in various ways depending on the conditions that arise when using the device according to the present invention.

FIG. 1 is a perspective view of an embodiment of the joining structure according to the present invention, FIG. 2 is a sectional view of the joining structure, FIG. 3 is a plan view of the joining structure in a state of absorbing lateral vibration, FIG. FIG. 5 is a cross-sectional view of the joint structure in a state of absorbing vertical vibration.

In FIG. 1, reference numeral 1 denotes a pier, and the piers 1 are arranged with their joints facing each other. This opposite bridge 1
The opposite corners of the are cut out in an L shape to form the mounting portion 2. Reference numeral 3 denotes a plate body in which corners 4 facing each other are provided with Rs and L-shapes are arranged in a laterally long direction. A large number of the plate bodies 3 are laterally long and are arranged in a lateral direction to be arranged in parallel. The juxtaposed parts are slidable with respect to each other at an interval wider than the thickness of the plate body 3. A plurality of the plate bodies 3 are arranged side by side, and an L-shaped plate 6 is fixed by welding or bonding to the side of the corner 5 side opposite to the corner 4 to which the R is attached and half of the bottom. It is fixed by means. A hinge 8 is attached to the L-shaped plate 6 on the same line as the hinge 7 formed on the bridge 1. The plate body 3 fixed by the L-shaped plate 6 is inserted and crossed over the bridges 1 and 1 with a predetermined clearance and the R direction. A sliding rod 9 is attached to each of the hinges 7 and 8. 10 is a cover plate.

The plate body 3 has a horizontal size of 500 to 1000.
mm, preferably 750 mm, length 300-600 mm, preferably side to half 400 mm, tip 250 mm
Is preferred.

The L-shaped plate 6 is formed by arranging a plurality of plate bodies 3 in parallel as a position unit, and at a position half of the side and bottom of the corner 5 side opposite to the corner 4 to which R is attached. It is fixed by a fixing means such as adhesion. The space between the plate bodies 3 is slightly wider than the width of the plate body 3. For example, it is preferable that the plate body 3 has a thickness of 30 mm and the interval be about 40 mm.

The plate body 3 fixed by the L-shaped plate 6 is provided in the bridges 1 and 1 with a predetermined clearance A, and the plate body 3 with R is inserted and crossed. The play gap A is mounted such that the plate body 3 is inserted and crossed while leaving a gap of about 2/6. For example,
In the case of the plate body 3 having a width of 750 mm, it is sufficient to provide a play space having an interval of 250 mm.

As described above, since the plate body 3 is inserted and crossed between the bridges 1 and 1 with a predetermined clearance and the R is directed, a strong vertical vibration is generated as shown in FIGS. If there,
As shown in FIGS. 3 to 4, the cross width of the plate body 3 is reduced, and R
The corners marked with absorb the vibration. That is, as shown in FIG. 4, the intersecting width is reduced to a position where the opposing plate bodies 3 do not come off, and the maximum shrinkage is until the lower part of the bridge comes into contact. FIG.
As shown in (1), the cross width of the plate body 3 is maximized, and when the cross width is further maximized, when there is a contraction motion of 2/6 or more of the plate body 3, the lower part of the bridge comes into contact and cancels the movement. In this case, a cushioning member such as a rubber plate can be attached to the lower portion of the bridge for cushioning.

The absorption of lateral vibration is shown in FIG.
As shown in FIG. 3, since the sliding rod 9 is attached to each of the hinges 7 and 8, the hinge 7 can absorb lateral vibration between the hinges 8.

[0016]

By using the joining structure of the present invention,
The expansion and contraction due to the temperature change of the bridge can be escaped, and the vibration of the opposite bridge can be absorbed by the opposing plate bodies that play. Moreover, the durability and the running property are good.

[Brief description of drawings]

FIG. 1 is a perspective view of an embodiment of a joining structure according to the present invention.

FIG. 2 is a sectional view of the joint structure.

FIG. 3 is a plan view of the joint structure in a state of absorbing lateral vibration.

FIG. 4 is a cross-sectional view of the joint structure in a state of absorbing longitudinal vibration.

FIG. 5 is a cross-sectional view of the joint structure in a state of absorbing longitudinal vibration.

FIG. 6 is a perspective view showing an example of a Maurer type expansion / contraction device.

FIG. 7 is a perspective view showing an example of a finger type expansion / contraction device.

[Explanation of symbols]

Claims (2)

[Claims] 1. A joint structure of bridges in which opposite bridges are joined via bridge piers, wherein corners of the opposite bridges are cut out in an L-shape to form a mounting portion, and the opposite corners are rounded. The plate body formed in the horizontal direction is made horizontally long and arranged at intervals wider than the thickness of the plate body, and a plurality of the plate bodies are arranged in parallel, and the L-shaped plate is integrally fixed to the corner side and half of the bottom. And a hinge attached to the back surface of the L-shaped plate on the same line as the hinge formed on the bridge connecting device, and the plate body is provided with a predetermined clearance between the bridges and R
The bridge joint structure characterized in that the plate bodies are inserted and crossed toward each other, and a sliding rod is attached to each of the hinges. 2. The joint structure for a bridge according to claim 1, wherein the play is mounted by inserting the plate bodies so that R is directed to a seam of the bridge and leaving approximately 2/6 of the plate bodies.