JP2000212915A - Drainage for bridge - Google Patents

Abstract

PROBLEM TO BE SOLVED: To securely retain the joint state of respective drain pipes to cope with the extension or contraction of a bridge girder or the like and efficiently drain rainwater falling on the bridge or the like and further, not to destroy the landscape. SOLUTION: This drainage is provided with a first drain pipe 3 arranged in a bridge girder 2 side, a second drain pipe 5 arranged in a bridge girder 4 side, and a connection pipe 6 whose upper end is connected and fixed to the first drain pipe 3 and whose lower end is inserted in an unfixed manner by a specified length in the second drain pipe 5. The connection pipe 6 is made of a flexible pipe material and grease is preferably filled in the fitting part between the connection pipe 6 and the second drain pipe 5.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a drainage device for rainwater or the like falling on a bridge such as an elevated road, an elevated track or a pedestrian bridge. The present invention relates to a bridge drainage device configured to drain water from a drain pipe provided along a pier.

[0002]

2. Description of the Related Art On an elevated road or the like, if the rainwater or the like remains on the road surface, the running of the vehicle becomes extremely dangerous due to the bounce of the rainwater or the occurrence of a hydroplaning phenomenon. Drainage must be performed. For this reason, on an elevated road or the like, a gutter is provided on a road shoulder or a median strip so that rainwater or the like that has fallen on the road surface flows into the gutter.

In an elevated road or the like, a bridge drainage device 100 as shown in FIGS. 4 and 5 is additionally provided to drain rainwater or the like flowing into a gutter from the upper part of the bridge. As shown in FIG. 4, the bridge drainage device 100 includes a drainage conduit 102 provided on a bridge girder 101 and a vertical drainage conduit 104 arranged along a pier 103. Bridge drainage device 100
The drain pipe 102 has one end connected to a not-shown gutter on the bridge upper side, the other end connected to a drain hole 105 penetrated to the bridge back side, and the other end guided to the pier 103 side. Further, the bridge drainage device 100 includes a vertical drainage conduit 10.
4 is fixed to the side surface of the pier 103 by the mounting bracket 106, and the upper end extends to face the drainage conduit 102.

[0004]

On an elevated road or the like, a large vibration is applied to the bridge drainage device 100 as the vehicle travels. Water may leak due to loose connection. On the other hand, on an elevated road or the like, the span of the pier 103 tends to be longer due to the development of structural materials and various materials and technological innovation.
Unpleasant vibrations and the like at the joints between them are reduced, so that more comfortable running is performed. On an elevated road or the like, as the span of the bridge pier 103 becomes longer, the length of the expanded bridge girder 101 expands and contracts due to changes in temperature and humidity.

In the bridge drainage device 100, when the drainage pipe 102 and the vertical drainage pipe 104 are directly connected to each other, the drainage pipe 102 and the vertical drainage pipe 104 are connected to each other in order to prevent water leakage from the connection part due to vibration or the like. Must be firmly connected. On the other hand, in the bridge drainage device 100, the drainage conduit 102 is fixed to the bridge girder 101 side and the vertical drainage conduit 104 is fixed to the pier 103 side as described above.

Accordingly, in the bridge drainage device 100, a large displacement occurs between the drainage conduit 102 and the vertical drainage conduit 104 as the temperature and humidity of the bridge girder 101 change. Also,
In the bridge drainage device 100, a displacement occurs between the drainage conduit 102 and the vertical drainage conduit 104 due to vibration or impact due to running of a vehicle or the like. The bridge drainage device 100 cannot cope with a positional displacement occurring between the drainage conduit 102 and the vertical drainage conduit 104 when the drainage conduit 102 and the vertical drainage conduit 104 are connected in a fixed state in order to prevent water leakage from the connection part. Occurs.

[0007] Therefore, in the conventional bridge drainage device 100, a connecting portion between the drainage conduit 102 and the vertical drainage conduit 104 is provided.
An adjusting tub member 107 for adjusting a positional shift caused by expansion and contraction of the bridge girder 101 and the like has been provided. As shown in FIG. 5, the adjusting tub member 107 is a box-shaped member having an opening dimension sufficiently larger than the outer diameter of the drainage conduit 102 or the vertical drainage conduit 104, and is fixed to the pier 103 side. Further, the adjusting tub member 107 has a sufficient opening dimension to adjust the amount of displacement generated between the drainage conduit 102 and the vertical drainage conduit 104.

In the bridge drainage device 100, the drainage pipe 102 is piped so that the lower end thereof faces the adjustment tub member 107, and the upper end of the vertical drainage pipe 104 is inserted into a drainage hole 108 formed in the bottom surface of the adjustment tub member 107. The parts are connected. The bridge drainage device 100 drains rainwater or the like that has fallen on the upper part of the bridge from a gutter into a drainage conduit 102 through a drainage hole 105, and through this drainage conduit 102, the regulating tub member
Drain to 7. The bridge drainage device 100 includes the adjusting tub member 1
07 is drained from the vertical drain 104 via the drain hole 108.

As described above, the bridge drainage device 100 is capable of keeping the drainage conduit 102 in the adjusting tub member 107 even when the vertical drainage conduit 104 is displaced from the vertical drainage conduit 104 due to expansion and contraction of the bridge girder 101 as described above. To make adjustments. Therefore, in the bridge drainage device 100, leakage of rainwater or the like from the connection portion between the drainage conduit 102 and the vertical drainage conduit 104 is prevented.

Incidentally, in the bridge drainage device 100, a large amount of rainwater and the like drained through the drainage conduit 102 is temporarily stored in the adjusting tub member 107. The bridge drainage device 100 had to be provided with a large adjustment tub member 107 having a sufficient water storage capacity and a large-diameter vertical drainage conduit 104 in order to prevent rainwater and the like from overflowing from the adjustment tub member 107. .

Therefore, the bridge drainage device 100 has a problem that the landscape is impaired by providing a large adjustment tub member 107 and a large-diameter vertical drainage conduit 104 on the pier 103. In the bridge drainage device 100, in the case of heavy rain, etc., the vertical drainage pipe 104
There is a problem when rainwater or the like overflows from the adjusting tub member 107 due to the limitation of the amount of drainage from the tank. Furthermore, in the bridge drainage device 100, having such a large opening causes an inconvenience that birds and the like nest in the adjusting tub member 107 and cause clogging.
There is a problem that a special cover or the like that does not hinder the movement of the drainage conduit 102 must be provided.

Accordingly, the present invention provides a vehicle and pedestrian safety system in which the connection state of each drainage pipe is securely maintained even when the bridge girder expands or contracts, and drains rainwater or the like falling on the bridge efficiently. It is an object of the present invention to provide a bridge drainage device which solves the above-mentioned problems of the conventional bridge drainage device which does not obstruct the scenery and does not obstruct the landscape.

[0013]

According to the present invention, there is provided a bridge drainage device comprising: a first drainage pipe provided on a bridge girder side; a second drainage pipe provided on a pier side; The connection pipe is fixedly joined to the first drain pipe, and the lower end is fixedly connected to the second drain pipe with a predetermined length in a non-fixed manner. The bridge drainage device includes a connecting pipe formed of a flexible pipe material. Also,
Preferably, the bridge drainage device is configured by filling a fitting portion between the connection pipe and the second drainage pipe with grease.

According to the bridge drainage device according to the present invention having the above-described structure, rainwater or the like that has fallen on the upper part of the bridge or the like is transferred from the first drainage pipe to the lower part of the bridge via the connection pipe by the second drainage pipe. Drain. In the bridge drainage device, vibrations and impacts caused by running of the vehicle and the like are absorbed by the flexible connection pipes, and disconnection of each connection portion and breakage of each drainage pipe are prevented. In a bridge drainage device, when a displacement occurs between a first drainage pipe and a second drainage pipe due to expansion or contraction or vibration of a bridge girder due to a temperature change or the like, a connecting pipe is displaced or deformed to absorb the displacement. . Therefore, in the bridge drainage device, the connection between the first drainage pipe and the second drainage pipe is securely maintained, and the drainage device drains rainwater efficiently. In the bridge drainage device, the first drainage pipe, the second drainage pipe, or the connection pipe is connected with a substantially integrated feeling, so that the scene is not spoiled.

In the bridge drainage device, when the connection pipe is deformed due to the positional deviation of the first connection pipe, the connection pipe is smoothly operated by the action of the grease filled between the bridge and the second drain pipe. Deformation operation. Moreover, in the bridge drainage device, the leakage of water at the connection between the connection pipe and the second drainage pipe is prevented by the action of grease.

[0016]

Embodiments of the present invention will be described below in detail with reference to the drawings. A bridge drainage device 1 shown in the drawings as an embodiment is also attached to an elevated road or the like, and drains rainwater or the like that has descended to the upper part of the bridge or the like and flowed into a gutter provided in a road shoulder or a median strip below the bridge. The bridge girder 2 is, for example, provided with concrete pavement or the like on the surface of the girder material, and has a long span to reduce vibration at a joint portion. And so on. The pier 4 is made of reinforced concrete or steel frame. Of course, the structure of an elevated road or the like is not limited to such a structure. For example, concrete pavement in which permeable concrete pavement is provided on a floor concrete pavement is also implemented.

As shown in FIGS. 1 and 2, the bridge drainage device 1 basically includes a drainage conduit 3 provided on a bridge girder 2 and a vertical drainage conduit 5 arranged along a pier 4. The configuration is the same as that of the above-described conventional bridge drainage device 100. The bridge drainage device 1 is characterized by a structure in which a drainage pipe 3 fixed to a bridge girder side and a vertical drainage pipe 5 fixed to a pier side are connected via a connection pipe 6 described in detail later. I have.

The bridge drainage device 1 is provided with a drainage pipe 3 formed of a pipe material having rust resistance and mechanical strength, for example, a stainless steel pipe or a synthetic resin pipe. The drain pipe 3
One end thereof communicates with a not-shown gutter on the upper side of the bridge, and the other end is connected to a drain hole 7 penetrated to the back side of the bridge. The other end of the drainage pipe 3 is guided to the pier 4 side, and is connected to the connection pipe 6 as described later.

The bridge drainage device 1 is provided with a vertical drainage pipe 5 formed of a pipe material having rust resistance and mechanical strength, for example, a stainless steel pipe or a synthetic resin pipe. Vertical drainage pipe 5
Are fixed to the side surface of the pier 4 in the height direction by a plurality of mounting brackets 8. The vertical drain pipe 5 has an upper end extending to face the drain pipe 3. By connecting an appropriate number of the vertical drainage pipes 5, a lower end piped to the ground communicates with a not-shown sewer.

The connection pipe 6 is made of, for example, a pipe material formed of a flexible synthetic resin material which has rust prevention and mechanical strength or chemical resistance and is elastically deformable. The connecting pipe 6 is provided at its upper end with the inner diameter of the drain pipe 3.
The upper end joint portion 9 is formed by making the diameter slightly larger than the outer diameter of the upper end. The lower end 3a of the drain pipe 3 is inserted into the upper end joint 9 and the adhesive 10
It is joined and fixed to the lower end 3a by the like. The drainage pipe 3 and the connecting pipe 6 do not cause a sense of incongruity by forming a piping structure having substantially the same diameter as a whole.

The outer diameter of the lower end of the connection pipe 6 is slightly smaller than the inner diameter of the joint 12 formed at the upper end of the vertical drainage pipe 5 to form the fitting portion 11. The connecting pipe 6
The vertical drain pipe 5 is connected to the joint section 12 by fitting the fitting section 11 to a required length, for example, about 1 m. In other words, the connection pipe 6 is connected to the vertical drain pipe 5 in a non-fixed state. The vertical drainage pipe 5 and the connection pipe 6 together with the drainage pipe 3 constitute a piping structure having substantially the same diameter as a whole, so that there is no sense of incongruity.

The space between the joint portion 12 of the vertical drainage pipe 5 and the fitting portion 11 of the connection pipe 6 is filled with grease 13. The grease 13 provides a lubricating property between the vertical drain pipe 5 and the connection pipe 6 and also has a sealing action. Therefore, the bridge drainage device 1 is configured such that the connecting pipe 6 can slide the fitting portion 11 relatively freely in the joint portion 12 of the vertical drainage pipe 5 in the axial direction and the rotational direction. . In addition, the bridge drainage device 1 includes a joint 1 of the vertical drainage pipe 5.
It is configured such that leakage of rainwater or the like flowing through the inside from between the fitting portion 11 of the connection pipe 6 and the fitting pipe 11 is prevented.

In the bridge drainage device 1 configured as described above, rainwater or the like that has fallen on the upper part of the bridge flows into the drainage conduit 3 from the gutter through the drainage hole 7. The bridge drainage device 1 flows rainwater or the like from the drainage conduit 3 to the vertical drainage conduit 5 via the connecting pipe 6 and drains it to the drainage drain on the ground. Large and continuous vibrations and impacts are applied to the bridge drainage device 1 by running a vehicle or the like. In the bridge drainage device 1,
Due to such vibrations and the like, a displacement occurs between the drainage conduit 3 and the vertical drainage conduit 5.

In the bridge drainage device 1, as described above, the connecting pipe 6 is connected to the vertical drainage pipe 5 so as to be able to slide relatively freely in the axial direction and the rotational direction in an unfixed state. In addition, the vibration and the impact are absorbed at the connection portion between the connection pipe 6 and the vertical drainage pipe 5. Therefore,
The bridge drainage device 1 surely prevents the occurrence of inconvenience such as damage to the drainage pipe 3, the vertical drainage pipe 5, or the connection pipe 6, and drains rainwater or the like.

Further, in the bridge drainage device 1, since the bridge girder 2 expands and contracts due to a temperature change or the like, the drainage conduit 3 is displaced from the vertical drainage conduit 5 as shown in FIG. In the bridge drainage device 1, the connection pipe 6 connecting the drainage pipe 3 and the vertical drainage pipe 5 has flexibility as described above. Therefore, in the bridge drainage device 1, as shown in the figure, the connecting pipe 6 is displaced or elastically deformed in accordance with the displacement L between the drainage pipe 3 and the vertical drainage pipe 5, and these drainage pipes 3
And the vertical drain pipe 5 or the connecting pipe 6 is prevented from being damaged, and the connection state between the drain pipe 3 and the vertical drain pipe 5 is securely maintained.

Therefore, the bridge drainage device 1 prevents rainwater or the like from leaking from the connection portion between the drainage conduit 3 and the vertical drainage conduit 5 and reliably drains rainwater or the like. In addition, bridge drainage device 1
Is grease 1 at the connecting portion between the vertical drainage pipe 5 and the connecting pipe 6.
Filling 3 prevents leakage from this connection site even when a large amount of rainwater or the like is drained.

In the bridge drainage device 1 of the above-described embodiment, a circular pipe material is used for the drainage pipe 3, the vertical drainage pipe 5, or the connection pipe 6. However, for example, a square pipe or the like may be used. Of course. Further, the bridge drainage device 1 may be provided not only on an elevated road but also on a pedestrian bridge, for example.

[0028]

As described above in detail, according to the bridge drainage device according to the present invention, the gap between the first drainage pipe provided on the bridge girder side and the second drainage pipe provided on the pier side is provided. Are connected by a flexible connecting pipe, the connecting pipe can be connected even when the first drain pipe and the second drain pipe are displaced due to expansion or contraction or vibration of the bridge girder due to temperature change or the like. By absorbing this by the deformation of, the disconnection of each connection portion and the breakage of each drainage pipe are reliably prevented, and rainwater or the like is drained efficiently. In addition, the bridge drainage device does not impair the scenery because the first drainage pipe, the second drainage pipe, or the connection pipe is connected with an almost unity feeling. Bridge drainage equipment
By filling the grease between the second drain pipe and the connection pipe, the connection pipe can be smoothly lifted and deformed due to the displacement of the first connection pipe, and water leakage from the connection part can be prevented. You.

[Brief description of the drawings]

FIG. 1 is a schematic diagram illustrating a configuration of an elevated road provided with a bridge drainage device shown as an embodiment of the present invention.

FIG. 2 is a longitudinal sectional view of a main part of the bridge drainage device.

FIG. 3 is a main part longitudinal sectional view for explaining a correcting operation of a positional displacement between a drain pipe and a vertical drain pipe by a connecting pipe in the bridge drain device.

FIG. 4 is a schematic diagram illustrating a configuration of an elevated road provided with a conventional bridge drainage device.

FIG. 5 is a perspective view of a main part of the bridge drainage device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Bridge drainage apparatus 2 Bridge girder 3 Drainage pipe 4 Bridge pier 5 Vertical drainage pipe 6 Connection pipe 7 Drainage hole 8 Mounting bracket 9 Upper joint part 10 Adhesive 11 Fitting part 12 Joint part 13 Grease

Claims (2)

[Claims] 1. A bridge drainage device for draining rainwater or the like that has fallen on the upper part of a bridge such as an elevated road through a drainage pipe arranged along a pier, a first drainage pipe installed on a bridge girder side, and a pier side. A second drain pipe connected to the first drain pipe, and an upper end thereof is fixedly connected to the first drain pipe and a lower end thereof is connected to the second drain pipe.
And a connecting pipe fixedly fitted to the drainage pipe with a predetermined length, wherein the connecting pipe is formed of a flexible pipe material. apparatus. 2. The bridge drainage device according to claim 1, wherein the fitting portion between the connection pipe and the second drainage pipe is filled with grease.