JP4677809B2 - Road bridge girder drainage channel - Google Patents

Description

The present invention relates to a drainage channel of a road bridge girder joint, and more particularly to a drainage channel of a road bridge girder joint that can be easily installed without subjecting a structure to any special processing and can reduce costs.

  The ends of the girder of the road bridge are connected to each other by a road bridge expansion / contraction device with a gap therebetween to absorb displacement caused by vibrations such as earthquakes. Since rainwater and the like enter from the joint of this girder, a drainage channel is provided below the girder joint to receive and drain rainwater and the like for the purpose of preventing rainwater and the like from flowing down the road below the road bridge.

  Conventionally, this drainage channel has adopted a structure in which, for example, a bolt hole is provided in a road bridge expansion / contraction device, and a ridge that becomes a drainage channel is bolted to the road bridge expansion / contraction device (see Patent Document 1).

However, in such a structure, there is a problem that it takes time and cost to install a drainage channel, and there is a problem that maintenance is not easy. Further, since bolt holes are made in a structure such as a road bridge expansion / contraction device, there is a problem that it is necessary to consider the strength reduction when designing the structure.
JP 2003-64613 A

  An object of the present invention is to provide a drainage channel of a road bridge girder joint that can be easily installed without subjecting a structure to special processing and can reduce costs.

In order to achieve the above-mentioned object, the drainage channel of the road bridge girder joint of the present invention is a drainage channel of the road bridge girder joint that drains rainwater from the girder joint of the road bridge where the ends of the girder are connected by a telescopic device. A hook part made of an elastic body extending along the girder joint below the telescopic device, and a detachable attachment to the structure on the side of each of the connected girder ends to hold the hook part Mounting means, and the mounting means is a magnet provided at both ends of the flange, and a band-shaped metal holder integrally provided along the outer periphery of the flange. The body is characterized in that its both end portions are pressed against the structure on the side of each of the connected girder ends by the elastic force of its own material.

Here, it is also possible to provide springs on the outer sides of both ends of the holding body, and to provide a contact portion made of a rubber layer on the outer side of the springs.

According to the drainage channel of the road bridge girder joint of the present invention, in the drainage channel of the road bridge girder joint that drains rainwater from the girder joint of the road bridge in which the end portions of the girder are connected by the telescopic device, the upper part is opened and the telescopic device is opened. It is possible to prevent rainwater or the like falling from the girder seam from being drained in the width direction of the road bridge and flowing down directly under the road bridge by the collar portion made of an elastic body extending along the seam below the seam.

  In addition, it has attachment means for detachably attaching to the structures on the side of each spar end to be connected to hold the collar part, and since this attachment means is a magnet provided at both ends of the collar part, Easy installation, especially when combined with a collar made of an elastic body that is easily deformed, even if there is a slight shift or deformation in the metal structure on the side of each girder that becomes the mounting location The structure can be easily installed without special processing, the installation cost can be reduced, and maintenance can be facilitated.

In addition to the magnet , the attachment means is provided along the outer periphery of the collar portion, and both ends are made to be holding bodies that are pressed against the structures on the side of the end portions of the girders that are connected by elastic force. It can be attached without being limited to the portion, and the collar portion can be held and fixed at an arbitrary position.

Hereinafter, the drainage channel of the road bridge girder joint of the present invention will be described based on the embodiments shown in the drawings. FIG. 1 shows a cross section of a drainage channel 1 of a reference form viewed from a direction perpendicular to the longitudinal direction.

  The drainage channel 1 is formed in a U-shape that extends between both ends, that is, along the girder joint, below the road bridge telescopic device 6 that connects the ends of the girder 7 of the road bridge, and opens upward. A long elongate cross section 2 is provided, and attachment means 3 provided at both ends of the eaves 2.

  The eaves part 2 is made of an elastic material, for example, a thin layer rubber or a composite of a thin layer rubber and a reinforcing layer such as a fiber layer. A magnet 3 (magnet rubber) serving as an attaching means is integrated with the flange 2 on the outside of both ends of the flange 2 by vulcanization adhesion, adhesion with an adhesive, or the like.

  The magnets 3 at both ends are attached to the structures on the end sides of the girders 7 connected by the road bridge telescopic device 6. Specifically, it is held and fixed by a magnetic force to the metal fixed end 6a (structure) of the road bridge telescopic device 6 on each end side of the beam 7.

As a result, the rainwater W falling downward from the road bridge girder joint is reliably received by the eaves portion 2 and drained to the end portion in the road bridge width direction which is the extending direction. Therefore, it is possible to prevent rainwater or the like from flowing directly under the road bridge, and water drops do not hit the vehicle passing through the road under the road bridge. The drainage channel 1 is connected to a drain pipe (not shown) that drains the drainage downward at the end in the width direction of the road bridge.

  According to this drainage channel 1, it can install without giving special processing to the girder 7 and the road bridge expansion-contraction apparatus 6 which are structures, and the installation is also easy. Further, since processing is not required, cost can be reduced and the strength of the structure is not reduced.

  Moreover, since the collar part 2 is an elastic body, it can be easily deformed, and can be easily installed even if there is a slight deviation or deformation in the girder 7 serving as a mounting place or the metal fixed end 6a of the road bridge expansion and contraction device 6. . Furthermore, since it is easy to attach and detach, maintenance is also easy.

In this reference embodiment , the magnet 3 is attached to the metal fixed end 6a of the road bridge expansion / contraction device 6, but if the girder 7 has a metal part, it can be attached to the metal part. The magnet 3 is provided continuously or intermittently in the extending direction of the flange 2.

An embodiment is shown in FIG. This drainage channel 1 changes only a reference form and an attachment means. This attachment means is a band-shaped metal holding body 4 provided along the outer periphery of the flange portion 2 and is made of an elastic material such as spring steel, and both ends thereof are roads by the elastic force of the material itself. It presses on each metal fixed end 6a of the bridge expansion-contraction apparatus 6, and the collar part 2 is hold | maintained and fixed by the reaction force. A plurality of holding bodies 4 are integrated with the collar part 2 by vulcanization adhesion, adhesion with an adhesive, or the like at a predetermined interval in the longitudinal direction of the collar part 2.

According to this embodiment, the same effect as the reference embodiment can be obtained. Further, as a further effect, the attachment location is not limited to metal, and the flange portion 2 can be held and fixed by being attached to an arbitrary location.

  FIG. 3 shows a modification of the holder 4. The holding body 4 shown in FIG. 3A has a rubber layer on the outside of both end portions of the holding body 4 to form a contact portion 8 with the fixed end 6a. With this structure, the fixed end 6a can be attached in close contact with the gap, and rainwater or the like can be more reliably prevented from flowing down. The contact portion 8 may be a rubber layer integrated with the flange portion 2, and is not limited to rubber, and a watertight material can be used.

  A holding body 4 shown in FIG. 3B is provided with a spring 5 and a contact portion 8 made of a rubber layer on the outside of both end portions of the holding body 4. One end of the spring 5 is attached to the holding body 4. The other end is surrounded by the contact portion 8 and the upper portion is surrounded by the flange portion 2. The rubber layer of the contact portion 8 and the flange portion 2 may be integrated. The rubber layer of the contact portion 8 is pressed against the fixed end 6a by the elastic force of the spring 5, and the collar portion 2 is held and fixed by the reaction force.

  In this structure, it is not necessary to use an expensive material such as spring steel for the holding body 4, and it is only necessary to use general carbon steel or the like, so that the cost can be reduced. As the spring 5, a spring having a general elastic force such as a coil spring or a leaf spring can be employed.

Incidentally, it is assumed that the combination of the attachment means and the magnet 3 already described with holder 4.

It is a front view which shows the reference form of the drainage channel of the road bridge girder joint of this invention. It is a front view which shows embodiment of the drainage channel of the road bridge girder joint of this invention. It is a partially expanded view which illustrates the modification of a holding body.

Explanation of symbols

1 Drainage channel 2 Buttocks
3 Magnet (mounting means)
4 Holding body (mounting means)
5 Spring
6 Road bridge telescopic device 6a Fixed end (structure)
7 digits (structure)
8 Contact part

Claims (2)

In the drainage channel of the road bridge girder joint that drains rainwater from the girder joint of the road bridge where the end portions of the girder are connected by a telescopic device, the upper part is opened and extended along the girder joint below the telescopic device. And a mounting means for detachably attaching to the structure on the side of each of the connected girder ends to hold the flange, the mounting means being at both ends of the flange And a band-shaped metal holding body integrally provided along the outer periphery of the collar, and this holding body is connected to the both ends thereof by the elastic force of its own material. A drainage channel for road bridge girder joints, which is pressed against the structure at the end of each girder.   The drainage channel of the road bridge girder joint according to claim 1, wherein springs are provided outside both ends of the holding body, and a contact portion made of a rubber layer is provided outside the spring.

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