JP7209509B2 - waterway lining structure - Google Patents

Description

The present invention relates to a waterway lining structure used for newly installing or repairing a roadbed of a waterway.

For example, in a waterway such as a sabo dam D shown in FIG. 11, water containing earth and sand tends to wear parts such as the water passing part A and the water beating part B. As shown in FIG. Therefore, in order to prevent or repair this wear, a lining material having wear resistance is sometimes laid when constructing a water channel or repairing it.

As a lining structure of this lining material, there is, for example, one shown in Patent Document 1 below. In this lining structure, a pedestal is fixed to a recess provided in the subgrade of a water channel, and a large number of lining materials consisting of a lining material body and legs with flanges provided on the back side of the lining material are arranged on the pedestal, and the recess and the lining are arranged. The space between the lining material and the lining material is filled with concrete, and the legs of the lining material are fixed with concrete (see paragraph 0008 of this document). The lining material is positioned by the cradle.

Japanese Patent No. 3708890

In the lining structure according to Patent Document 1, the positioning of the installation height, angle, etc. of each frame is generally performed by marking based on surveying at the work site. This leveling by marking is usually performed only at representative portions of the structure (for example, the ends and central portions of the structure). In the process of arranging the pedestals, the positions and levels of the pedestals are adjusted.

In this case, when the bottom surface of the recess is flat as shown in FIG. In areas where the riverbed is curved, it is necessary to fine-tune the position, angle, level, etc. of the pedestals to prevent the lining materials provided on the pedestals from overlapping each other and the gaps between them to become too large. becomes. In some cases, it may be necessary to check whether the lining material is installed on the frame and whether the frame is in the correct position, remove the lining material, and fix the frame in place. I have a problem that requires a lot of work.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to facilitate positioning of a frame that supports a lining material.

In order to solve the above problems, the present invention provides a plurality of cradles arranged in a recess formed in a channel bed, a plurality of lining materials arranged on the cradle, and a a filling material that hardens after being filled, wherein the pedestal is provided with a positioning member that determines a relative position between the pedestal and another adjacent member, and the other member and the positioning member The lining structure of the waterway is configured in which the pedestal is positioned by the abutment between the and.

In this way, regardless of the shape of the bottom surface of the recess or the water channel, it is possible to provide a plurality of frames in an appropriate positional relationship. can be reliably prevented. The position of the positioning member abutting is arbitrary, and may be an existing structure such as an anchor embedded in the recess, a concrete wall, a screen, etc., in addition to the adjacent pedestal or the positioning member provided on the pedestal. can be done.

In the above configuration, the lining material has a plate-like main body and leg portions projecting downward from the lower surface of the main body, and the main body is supported by the pedestal. The legs may be embedded and fixed in the filling material.

By doing so, the legs are firmly fixed by the hardened filling material, so that it is possible to reliably prevent the lining material from shifting after installation.

In each of the above configurations, a foundation bolt may be fixed to the frame, and the lining material may be fixed to the foundation bolt.

With this arrangement, the lining material can be easily and reliably fixed to the frame by tightening the nut onto the foundation bolt.

According to this invention, regardless of the shape of the bottom surface of the recess or the water channel, a plurality of frames can be provided in an appropriate positional relationship, so that the lining materials provided on the frames do not overlap each other or the gap is too large. can be reliably prevented. The position of the positioning member abutting is arbitrary, and may be an existing structure such as an anchor embedded in the recess, a concrete wall, a screen, etc., in addition to the adjacent pedestal or the positioning member provided on the pedestal. can be done.

BRIEF DESCRIPTION OF THE DRAWINGS The front view which shows 1st embodiment of the lining structure of the water channel which concerns on this invention. Enlarged view showing the main part of FIG. 2 is an exploded perspective view of part of the lining structure of FIG. 1; FIG. Plan view showing an installation example of the lining structure The side view which shows 2nd embodiment of the lining structure of the water channel which concerns on this invention. Perspective view showing a frame (horizontal frame) The perspective view which shows 3rd embodiment of the lining structure of the water channel which concerns on this invention. The side view showing the fourth embodiment of the waterway lining structure according to the present invention. The side view which shows the principal part of FIG. Arrow view from XX line direction in FIG. Perspective view showing an example of a sabo dam

1 and 2 show a first embodiment of a water channel lining structure according to the present invention. 1 and 2 are cross-sectional views taken along a plane perpendicular to the flow direction of the water channel, and W ₁ and W ₂ in each figure indicate left and right side walls of the water channel in the width direction. This waterway lining structure is used for newly installing or repairing a waterway roadbed. The main components are a plurality of lining materials 3 and a filling material 4 that hardens after being filled in the recess 1 .

The recessed portion 1 is formed using a formwork or the like corresponding to the shape of the recessed portion 1 when the waterway is newly constructed, and when the waterway is repaired, the aged roadbed is stripped. formed by The depth d of the concave portion 1 can be determined as appropriate, but is often set to about several tens of centimeters.

FIG. 3 shows an example of the frame 2 and the lining material 3 used in the lining structure shown in FIG. 1 and the like.

The pedestal 2 has a plurality of legs 5 arranged in two rows along the longitudinal direction (flow direction of the waterway) of the pedestal 2, and a pair of legs connecting the upper ends of the legs 5 arranged in two rows. a horizontal member 6, a plurality of vertical members 7 connecting the pair of horizontal members 6 together, and a positioning member 8 provided on one leg portion 5 of the plurality of leg portions 5 arranged in two rows. ,have. The legs 5, the horizontal members 6, the vertical members 7, and the positioning members 8 are all made of steel. The legs 5 and the horizontal member 6, the horizontal member 6 and the vertical member 7, and the leg 5 and the positioning member 8 are fixed by welding, respectively. A pair of horizontal members 6 and a plurality of vertical members 7 form a plurality of square grids on the upper surface of the mount.

The positioning member 8 is composed of a plurality of connection pieces 9 vertically projecting from each leg portion 5 and contact portions 10 connecting the connection pieces 9 . The connection piece 9 and the contact portion 10 are fixed by welding. The contact portion 10 is a long plate-like member (flat bar) arranged parallel to the horizontal member 6 . The positioning members 8 are arranged so as to contact the leg portions 5 of the adjacent pedestals 2 . The shape of the positioning member 8 is arbitrary, and a hook-shaped member such as an L-shaped steel, or steel materials of various shapes such as U-shaped steel, H-shaped steel, T-shaped steel, etc. It can be selected as appropriate in consideration of the circumstances. A short member can also be employed as the contact portion 10 as long as it can be positioned between the adjacent pedestals 2 and the like.

As shown in FIG. 2 and the like, the frame 2 is fixed by welding a bar steel 12 arranged between anchor bolts 11 previously provided in the recess 1 after installation at a predetermined position. As a result, the position of each mount 2 within the recess 1 is determined.

The shape of the positioning member 8 and the mounting position to the leg portion 5 are determined based on the result of the measurement of the shape of the recess 1 performed in advance. For example, as shown in FIG. 1, when the cross-sectional shape of the channel is curved across its width, it is necessary to gradually change the installation angle of the adjacent mounts 2 along its width. Therefore, the shape of the positioning member 8 and the attachment position to the leg portion 5 are determined so that the relative angle between the leg portions 5 of the adjacent mounts 2 corresponds to the curvature of the channel. Since the positioning member 8 is attached in advance at the manufacturing factory of the pedestal 2, there is no need for on-site adjustment work. Therefore, the installation work of the gantry 2 on site can be performed smoothly.

It is preferable that the legs 5 of the adjacent pedestals 2 with which the positioning members 8 abut are marked to indicate the abutment positions. In this way, the pedestal 2 can be arranged using this marking as a guide, so that the installation work of the pedestal 2 can be performed more smoothly.

In this embodiment, the positioning member 8 is provided on the leg portion 5 of the pedestal 2, but it is also possible to provide the positioning member 8 on the frame portion (horizontal member 6 and vertical member 7) of the pedestal 2. can. Further, for example, by forming a portion of the leg portion 5 into a shape protruding toward the adjacent pedestal 2, the positioning member 8 can be used as a part of the pedestal 2, which saves space and reduces weight. There is a possibility that it will be possible to reduce the cost of materials, etc.

The lining material 3 has a plate-shaped main body portion 13 and leg portions 14 protruding downward from the lower surface of the main body portion 13 . The body portion 13 and the leg portion 14 are fixed by welding. The body portion 13 is made of wear-resistant cast steel, and the leg portion 14 is made of steel. Although FIG. 3 shows a square main body 13, the shape of the main body 13 may be a rectangle, a trapezoid, or a shape obtained by cutting out a part of these (for example, see FIG. 4). It can be appropriately changed according to the shape of W. Note that the body portion 13 and the leg portion 14 can be integrally formed by casting or the like.

Four legs 14 are provided near the four corners of the main body 13 . A flange portion 15 is provided at the lower end of the leg portion 14 . The leg portion 14 is embedded in the filler 4 filled in the recess 1. By forming the flange portion 15, the pullout resistance strength of the leg portion 14 embedded in the filler 4 can be improved. . The position and the number of legs 14 can be appropriately changed according to the shape, size, etc. of main body 13 .

In this embodiment, the length of the leg portion 14 of the lining material 3 is shorter than the length of the leg portion 5 of the pedestal 2 so that the leg portion 14 of the lining material 3 does not come into contact with the bottom surface of the recess 1. (See FIG. 2, etc.), the length of the legs 14 of the lining material 3 may be extended so that the legs 14 are supported by the bottom surface of the recess 1 .

Cement is adopted as the filler 4 in this embodiment. This filler 4 is filled up to the position of L shown in FIG. By filling the filler material 4 to this depth, the hardened filler material 4 can stably hold the legs 14 of the lining material 3 .

When constructing this lining structure, first, a plurality of pedestals 2 are arranged in order within the recess 1 . At this time, the positioning member 8 provided on the pedestal 2 is brought into contact with a predetermined position such as the leg portion 5 of the adjacent pedestal 2 . As a result, the plurality of pedestals 2 can be smoothly arranged at predetermined positions. After this arrangement, each frame 2 is fixed to anchor bolts 11 by means of steel bars 12 .

Next, a plurality of lining materials 3 are sequentially provided on the lattice formed on the upper surface of the frame 2 . The position of this lining material 3 is determined by the installation position of the frame 2 . In this construction, since each frame 2 is accurately installed at a predetermined position, a plurality of lining materials 3 can be smoothly arranged without overlapping or large gaps. At this time, the installation of a part of the lining material 3 is temporarily suspended, and a predetermined amount of the filling material 4 is filled into the recess 1 through the lattice-shaped holes for providing the lining material 3 . Then, before the filling material 4 hardens, the lining material 3 whose installation has been suspended is provided at a predetermined position. Then, when the filler 4 is hardened, the lining structure of the channel is completed.

In this embodiment, the positioning member 8 is configured to abut on the leg portion 5 of the adjacent frame 2, but the anchor bolt 11 provided in the recess 1, the concrete wall such as the erosion control dam D, and the water channel are provided. It can also be brought into contact with an existing structure such as a screen. For example, as shown in plan view in FIG. 4, when the riverbed surface is curved, the pedestal 2 can be accurately positioned by bringing the positioning member 8 into contact with the concrete wall that serves as the side wall W of the riverbed surface. can be done.

Moreover, it is good also as a structure which makes the positioning members 8 provided in each of the adjacent mounts 2 contact|abut. In this case, the positioning members 8 can be fixed together by welding or screws. By doing so, it is possible to reliably prevent the positions of the pedestals 2 from being shifted.

FIG. 5 shows a second embodiment of the water channel lining structure according to the present invention. The flow direction of this water channel is the direction indicated by the arrow f in the figure. The basic configuration of this lining structure is common to the lining structure according to the first embodiment. It is provided at the place where it changes. In addition, the same code|symbol is attached|subjected about the part which is common in 1st embodiment, and the description is abbreviate|omitted.

A positioning member 8 is provided on the upstream side of the legs 5 of the pedestal 2 (hereinafter referred to as slanted pedestal 2a) arranged on the inclined portion of the water channel. The positioning member 8 includes a plurality of first connection pieces 9a protruding substantially perpendicularly to the leg portion 5, a second connection piece 9b connected to the tip side of each first connection piece 9a, and a contact portion 10 that connects the second connection pieces 9b. The contact portion 10 is a long plate-like member provided perpendicular to the flow direction f of the water channel. In this embodiment, the positioning member 8 is provided on the upstream side of the leg portion 5, but the positioning member 8 is provided on the downstream side of the leg portion 5, or on both the upstream side and the downstream side. can also be

The mounts 2 (hereinafter referred to as horizontal mounts 2b) arranged in the horizontal part of the water channel are arranged in two rows along the longitudinal direction (direction orthogonal to the flow direction f) of the horizontal mounts 2b, as shown in FIG. A pair of horizontal members 6 connecting the upper ends of the plurality of legs 5 arranged in two rows, and a plurality of first vertical members connecting the pair of horizontal members 6 7a, and a second vertical member 7b horizontally protruding from one horizontal member 6 of the pair of horizontal members 6 alternately with the first vertical member 7a. The legs 5 and the horizontal member 6, and the horizontal member 6 and the first vertical member 7a and the second vertical member 7b are fixed by welding. A positioning member 8 is provided on the leg 5 on the upstream side of the horizontal platform 2b.

A contact portion 10 of the positioning member 8 provided on the inclined base 2a is in contact with the leg portion 5 of the horizontal base 2b. Further, the contact portion 10 of the positioning member 8 provided on the horizontal frame 2b is in contact with the concrete wall of the existing structure such as the erosion control dam D (see FIG. 11). These abutments ensure accurate positioning between the tilting frame 2a and the horizontal frame 2b, and between the horizontal frame 2b and the existing structure such as the sabo dam D. It is possible to reliably prevent the provided lining material 3 from being overlapped or having a large gap.

FIG. 7 shows a third embodiment of the water channel lining structure according to the present invention. The direction of flow of the water channel in which this lining structure is adopted is the direction indicated by the arrow f in the drawing. The pedestal 2 according to the third embodiment has a plurality of laterally spaced pairs arranged vertically in the longitudinal direction of the pedestal 2 (a direction perpendicular to the flow direction f). A member 6, a plurality of vertical members 7 vertically paired so as to be orthogonal to the horizontal member 6 and spaced apart in the longitudinal direction, and an L-shaped member provided on the horizontal member 6 and having a male screw at its upper end. and a positioning member 8 horizontally protruding from the horizontal member 6 . The horizontal member 6 and the vertical member 7, the horizontal member 6 and the foundation bolt 16, and the horizontal member 6 and the positioning member 8 are fixed by welding.

Also, the lining material 3 according to the third embodiment has a main body portion 13 in the shape of a square flat plate. A plurality of holes for bolts 17 for inserting foundation bolts 16 of the frame 2 are formed in the main body 13 . By screwing nuts 18 (in this embodiment, two nuts 18 from above and below the body portion 13 ) onto the foundation bolts 16 , the body portion 13 can be securely fixed to the frame 2 . The shape of the lining material 3 is not limited to square, but may be rectangular as shown in FIG. 7 (see lining material 3').

8 to 10 show a fourth embodiment of the water channel lining structure according to the present invention. The lining structure according to the fourth embodiment is second in that it is provided at a portion where the inclination angle of the water channel on the way from the water passage portion A of the erosion control dam D (see FIG. 11) to the water tapping portion B changes, for example. Although similar to the embodiment, the lining material 3 provided at the portion where the inclination angle of the channel changes is fixed by the nut 18 screwed onto the foundation bolt 16, as in the lining structure according to the third embodiment. different in that respect.

In the fourth embodiment, the frame 2 is formed by a plurality of horizontal members 6 orthogonal to the flow direction f of the water channel and a plurality of foundation bolts 16 provided on the horizontal members 6 . A positioning member 8 is provided on a horizontal member 6 that constitutes the pedestal 2 . The configuration of the positioning member 8 is the same as that of the second embodiment. The connection between the cross member 6 and the foundation bolt 16 and between the cross member 6 and the positioning member 8 are fixed by welding.

The waterway lining structure described in each of the above embodiments is an example in all respects, and as long as it is possible to solve the problem of the present invention of facilitating the positioning of the pedestal 2 that supports the lining material 3, each The shape, number, arrangement, etc. of the constituent members can be changed as appropriate.

Reference Signs List 1 Recess 2 Base 2a Inclined base 2b Horizontal base 3 Lining material 4 Filling material 5 (Mounting base) leg 6 Horizontal member 7 Vertical member 8 Positioning member 9 Connecting piece 9a First connecting piece 9b Second connecting piece 10 Abutting part 11 Anchor bolt 12 Bar steel 13 Main body 14 Leg (of lining material) 15 Collar 16 Foundation bolt 17 Bolt hole 18 Nut

Claims (3)

a plurality of cradles (2) arranged in recesses (1) formed in a channel bed;
a plurality of lining materials (3) arranged on the pedestal (2);
a filling material (4) that is filled in the recess (1) and then cured;
and the pedestal (2) is provided with a positioning member (8) that determines the relative position between this pedestal (2) and another adjacent pedestal (2) ,
The positioning member (8) includes a first connecting piece (9a) protruding from the leg (5) of the pedestal (2) and the first connecting piece (9a) facing the other pedestal (2). a second connection piece (9b) that is inclined and connected to the tip side of the connection piece (9a);
The water channel positioned while changing the angle of inclination between the pedestal (2) and the other pedestal (2) by contact between the other pedestal (2) and the positioning member (8). lining structure. The lining material (3) has a plate-like main body (13) and legs (14) protruding downward from the lower surface of the main body (13). is supported by said frame (2) and said legs (14) are embedded and fixed in said filler (4). A lining structure for a waterway according to claim 1 or 2, wherein a foundation bolt (16) is fixed to said frame (2), and said lining material (3) is fixed to said foundation bolt (16).

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