JP2008169690A - Structure of pier drainpipe installation - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide the structure of pier drainpipe installation that improves the appearance of piers by reducing exposed drainpipe portions. <P>SOLUTION: The structure of installation of drainpipes along piers is such that pier metal fittings 11 provided with main installation metal fittings 13 are fixed at a position to install a rectangular-pier drainpipe 5. Drainpipe metal fittings 20 are fixed at the back of the pier drainpipe 5. The drainpipe metal fittings 20 are engaged with the main installation metal fittings 13 to install the pier drainpipe 5 on the pier. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to an attachment structure for a pier drain pipe for attaching a drain pipe along a pier.

Conventionally, in order to drain down rainwater and the like on the upper surface of a bridge such as an expressway, the drainage pipe is provided along the pier while heading downward from the back side of the bridge.
Among these, the pier drain pipe arranged along the pier is conventionally formed of a cylindrical drain pipe made of vinyl chloride having a hollow inside. A plurality of these drain pipes are arranged in series vertically and joined together, and these are fixed to the pier.
When fixing the drain pipe to the pier, an attachment fitting in which an arc-shaped locking portion for locking the outer periphery of the drain pipe and an attachment piece portion for bolting to the pier is integrally used.

Since such a drain pipe is formed in a cylindrical shape, the balance with the pier formed in a prismatic shape is usually poor, and the appearance of the entire pier is impaired.
Therefore, it is conceivable that the drain pipe is formed in a prismatic shape, the mounting bracket is extended along the surface of the pier from both sides of the drain pipe, and the mounting bracket is fixed to the pier with bolts. In this case, since the external appearance becomes poor when the bolt is exposed, it is preferable to attach a cover covering the bolt to the drain pipe.

  In the structure in which the drain pipe is shaped like a prism and the mounting bracket provided on the drain pipe is fixed to the pier with bolts, the appearance is improved compared to the case where a cylindrical drain pipe is used, but the drain pipe itself is the pier. Therefore, the appearance cannot be improved sufficiently.

  The objective of this invention is providing the attachment structure of the drainage pipe for piers which can reduce the exposed part of a drainage pipe and can improve the external appearance of a pier.

  The mounting structure of the pier drain pipe of the present invention is a mounting structure of a pier drain pipe that attaches the drain pipe along the pier, and the drain pipe for the pier is formed in a square tube shape, A pier fitting is fixed to a place where the drain pipe is attached, a drain pipe fitting is fixed to the back surface of the pier drain pipe, and the drain pipe fitting and the pier fitting are engaged with each other to connect the drain pipe for the pier. It is attached to the pier.

Since the metal fitting for engaging the pier drain pipe and the pier is provided on the back surface of the drain pipe, it is hidden behind the pier drain pipe and cannot be seen from the front. In addition, since the drain pipe itself has a prismatic shape, the front surface of the pier and the front surface of the drain pipe have the same surface shape, so that the appearance is further improved.
The mounting structure of the pier drain pipe according to the related invention is a mounting structure of the pier drain pipe that attaches the drain pipe along the pier, and a dent is formed at a position where the pier drain pipe of the pier is attached. A pier fitting is fixed to the bottom of the dent, a drain pipe fitting is fixed to the back surface of the pier drain pipe, and the drain pipe fitting and the pier fitting are engaged with each other to attach the pier drain pipe to the pier. Mounting, characterized in that the pier drain pipe does not protrude from the front of the pier in a state where it is attached to the pier.

In this configuration, since the pier drain pipe does not protrude from the front of the pier, the exposed portion of the distribution pipe is reduced, and the pier and the pier drain pipe are integrated in appearance. In addition, since the metal fitting for engaging the pier drain pipe and the pier is provided on the back surface of the drain pipe, it is hidden behind the pier drain pipe and cannot be seen from the front.
Therefore, the pier drain pipe is neatly stored in the recess of the pier, and the appearance is improved. In other words, the scenery of the pier is improved.

Here, in this invention, it is preferable that the said pier drainage pipe is formed in the square cylinder shape.
In this configuration, since the drain pipe itself has a prismatic shape, the front surface of the pier and the front face of the drain pipe have the same planar shape, so that the appearance is further improved.

Further, the pier metal fitting includes an attachment piece to the pier and a U-shaped main body integrally formed with the attachment piece and provided with a predetermined space between the pier, and the drain pipe fitting is used for the pier The structure provided with the attachment piece part fixed to the back surface of the drain pipe and the engagement piece part integrally formed from this attachment piece part and insertable in the said space is preferable.
In this configuration, the pier drainage pipe can be attached to the pier by simply fixing the metal fitting to the pier drain pipe in advance and inserting the metal fitting into the space of the pier metal fitting fixed to the pier in advance.
Therefore, it becomes easy to install the pier drain pipe.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
1 to 3 show a first embodiment of the present invention.
FIG. 1 is a front view of one bridge 1 such as a highway. The upper surface of the pier 2 of the bridge 1 is the road surface 3 of the highway. On both sides of the road surface 3, vertical side walls 4 are provided on the road shoulder 3 </ b> S. A plurality of FRP square drain pipes 5 are vertically arranged on the side surface of the pier 2.
The rain and snow melted on the road surface 3 of the bridge 1 gathers on one side of the road shoulder 3S, and the water flows downward along the drainage pipe 5 for the pier provided along one wall surface of the pier 2 from here. And flows through a discharge port 6 of the drain pipe 5 into a groove 7 provided under the pier 2.

2 and 3 show the detailed structure of the drain pipe mounting structure.
In these FIG. 2, a rectangular recess 10 having a width dimension T and a depth dimension D is formed extending vertically in a portion where the pier drain pipe 5 of the pier 2 is attached.
A pier fitting 11 is fixed to the bottom of the recess 10. The bridge pier fitting 11 includes an anchor 12, an attachment fitting main body 13 that is locked to the anchor 12, and a bolt 14 that attaches the attachment fitting main body 13 to the anchor 12.
When the anchor 12 is driven into the wall surface of the recess 10, the bottom portion 12 </ b> B expands and the anchor 12 is firmly fixed to the wall surface of the recess 10.

The mounting bracket main body 13 is a U-shaped main body that is integrally formed with the mounting piece 13 </ b> A and the mounting piece 13 </ b> A that are attached to the pier 2, and is provided with a predetermined space d between the pier 2. An insertion hole 15 through which the bolt 14 is inserted is formed in one attachment piece portion 13A, and an insertion hole 16 through which the bolt 14 is inserted is formed in the other attachment piece portion 13A.
When fixing the mounting bracket 13 to the wall surface of the recess 10 of the pier 2, first, the anchor 12 is fixed to the wall surface of the recess 10, and the insertion holes 15 and 16 of the pier bracket 11 are inserted into the place 12 C where the anchor 12 is driven, The pier fitting 11 is fixed to the wall surface of the recess 10 by aligning with 12D and screwing the bolt 14 into the insertion holes 15 and 16.

The pier drain pipe 5 is a rectangular pipe having a rectangular cross section (for example, 200 mm × 100 mm), and a drain pipe fitting 20 is fixed to the back surface thereof. The drain pipe fitting 20 includes an attachment piece 21 fixed to the back surface of the drain pipe 5 and a locking piece 22 that is integrally formed with the attachment piece 21 and engages with the pier fitting 11. The locking piece 21 can be loosely inserted into the space d of the mounting bracket main body 13.
A plurality of pier drain pipes 5 are connected vertically, and connection sockets 30 are attached to both ends of drain pipes 5 adjacent to each other in the upper and lower sides. For the purpose, a rubber packing (not shown) is provided.
The pier drain pipe 5 is preferably made of FRP (glass fiber reinforced plastic) as a material in view of connectivity and strength. Moreover, the drain pipe 5 is formed in the square cylinder shape of a cross-sectional square.

  When attaching the drain pipe fitting 20 and the pier fitting 11, the drain pipe fitting 20 and the engaging portion 22 of the pier fitting 11 are engaged with each other to attach the pier drain pipe 5 to the pier 2. The pier drain pipe 5 does not protrude from the front of the pier when it is attached to the pier 1. The state after attachment is shown in FIG. That is, in the state where the pier drain pipe 5 is attached to the pier 2, the dimension from the bottom of the recess 10 of the drain pipe 5 is shorter than the depth dimension D of the recess 10, and the width dimension of the drain pipe 5 is the width of the recess 10. Shorter than dimension T.

According to this embodiment, there are the following effects.
(1) The pier drain pipe 5 does not protrude from the front of the pier 2, and the metal fittings 11 and 20 for engaging the pier drain pipe 5 and the pier 2 are provided on the back surface of the drain pipe 5. Therefore, the portion where the drain pipe 5 is exposed from the pier 2 is reduced, and the pier drain pipe 5 is neatly stored in the recess of the pier 2 and the appearance is improved.
(2) Since the pier drain pipe 5 is formed in a rectangular tube shape, the outer surface of the pier drain pipe 5 itself is unified into an outer surface shape similar to the outer surface of the pier front, further improving the appearance. To do.

(3) Since the engaging portion between the pier drainage pipe 5 and the pier 2 is located behind the drainage pipe 5 and is not directly exposed to wind and rain, it is not necessary to provide a special cover on the engaging portion.
(4) Since the drain pipe 5 is made of FRP (glass fiber reinforced plastic), the linear expansion coefficient of FRP is substantially the same as that of the concrete constituting the bridge pier 2, so there is no inconvenience regarding the expansion and contraction of both.

(5) The pier metal fitting 11 includes a mounting piece portion 13A to the pier 2 and a U-shaped main body formed integrally with the mounting piece portion 13A and provided with a predetermined space d between the pier 2 and Moreover, the drain pipe fitting 20 is configured to include an attachment piece 21 fixed to the back surface of the pier drain pipe 5 and an engagement piece 22 that is integrally formed from the attachment piece 21 and can be inserted into the space d. A metal fitting is fixed to the pier drain pipe 5 in advance, and the pier drain pipe 5 is simply attached to the pier 2 simply by inserting the metal fitting into the space d of the mounting metal body 13 fixed to the pier 2 in advance. Can do.

(6) Since the engagement piece 22 of the drain pipe fitting 20 can be gently inserted into the space d of the bridge pier fitting 13, that is, can be loosely inserted, the temperature between the drain pipe 5 and the fitting is low. Even if there is a change and one of them expands, the play can absorb the expansion.

Next, a second embodiment of the present invention will be described with reference to FIG. The second embodiment is different from the first embodiment in the structure for attaching the drain pipe 5 to the pier 2 and the other configuration is the same as that of the first embodiment. Note that the same components as those in the first embodiment are denoted by the same reference numerals, and redundant description is omitted.
The pier mounting piece 30 of the pier fitting 29 is fixed to the bottom of the dent 10 of the pier 2. The pier mounting piece 30 is provided with insertion holes 13 and 15 through which bolts for fixing the pier fitting 29 to the wall surface of the recess 10 are inserted.

The pier metal fitting 29 includes a U-shaped portion 31 that is integrally formed with the attachment piece 30 and that has a predetermined space between the pier 2.
On the other hand, the drainage pipe fitting 32 includes an attachment piece 32A fixed to the back surface of the pier drainage pipe 5 and an engagement piece 32B integrally formed from the attachment piece 32A. The engaging piece 32B is loosely inserted into the U-shaped portion 31.
In order to attach the drain pipe 5 to the pier attachment piece 30, first, the insertion holes 15 and 16 of the pier attachment piece 30 are aligned with the bolt holes, and the bolts 14 are screwed into the insertion holes 15 and 16, thereby The metal fitting 29 is fixed to the wall surface of the recess 10.

Thereafter, the pier drainage pipe 5 can be easily attached to the pier by inserting the engagement piece 32B of the drain pipe fitting 20 formed in advance in the drain pipe 5 into the space of the pier fitting 29.
In the second embodiment, the pier fitting 29 and the drain pipe fitting 32 have the same cross-sectional shape formed up and down, so the drain pipe 5 cannot be supported by the fittings 29, 32, and the upper drain pipe 5 is not attached to the lower pipe fitting. It will be supported by the drain pipe 5. However, by providing a locking portion for locking the pier metal fitting 29 at the upper end edge of the drain pipe metal fitting 32, the drain pipe 5 can be supported by the metal fitting as in the first embodiment.

According to such a 2nd embodiment, besides the same operation effects as (1) to (4) (6) of a 1st embodiment, the following operation effects can be produced.
In other words, since the pier metal fitting 29 does not directly support the load of the drain pipe 5, it is not necessary to use a special fixing tool for increasing the attachment strength of the pier metal fitting 29.

In addition, this invention is not limited to the said embodiment, Other modifications etc. which can achieve the objective of this invention are included, The deformation | transformation etc. which are shown below are also contained in this invention.
For example, in the above embodiment, the attachment location of the drain pipe 5 and the pier 2 and the number of the drain pipe 5 and the number thereof are not particularly mentioned, but depending on the overall length of the drain pipe 5 and the length of each individual drain pipe 5, The mounting location and the number thereof can be selected as appropriate.
Moreover, although the shape of the dent 10 of the pier 2 and the shape of the drain pipe 5 are illustrated so that the cross section is substantially rectangular, as long as the drain pipe 5 is attached to the pier 2 and does not protrude from the front of the pier, Inside the dent, various shapes such as a square, a trapezoid, and a polygon can be selected according to various conditions of the place where the drain pipe 5 is installed.

  INDUSTRIAL APPLICATION This invention can be utilized as a drainage pipe for piers which attaches a drain pipe along bridges, such as a highway.

The side view which shows the attachment structure of the drainage pipe for piers in 1st Embodiment of this invention. The disassembled perspective view which shows the attachment structure of the drainage pipe for piers in 1st Embodiment. The top view which shows the attachment structure of the drainage pipe for piers in 1st Embodiment. The top view which shows the attachment structure of the drainage pipe for piers in 2nd Embodiment of this invention.

Explanation of symbols

2 Pier 5 Drain pipe for pier 11, 29 Bracket bracket 14, 15 Bolt 20, 32 Drain pipe bracket

Claims (1)

  A mounting structure of a pier drain pipe for attaching a drain pipe along a pier, wherein the pier drain pipe is formed in a rectangular tube shape, and a pier metal fitting is fixed to a position of the pier where the pier drain pipe is attached. A drainage for a pier, wherein a drainage pipe fitting is fixed to a back surface of the pier drainage pipe, and the drainage pipe fitting and the pier fitting are engaged with each other to attach the pier drainage pipe to the pier. Tube mounting structure.

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