JP3708890B2 - Canal lining structure and lining materials - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a water lining structure such as a drainage channel provided in a river and a flood discharge channel provided in a dam, and a lining material for the water channel.
[0002]
[Prior art]
It has been conventionally known that a lining material made of wear-resistant rubber is installed in a water channel to protect a portion subjected to the impact of debris flow (Japanese Utility Model Publication No. 63-26417, Japanese Patent Application Laid-Open No. 61-186604). ). These lining materials are formed in a rectangular plate-like body, and are provided with attachment holes at four locations, and are fixed by inserting anchor bolts provided in the main body concrete of the water channel into the attachment holes. After fixing, a plug of the same quality as the lining material is fitted into the mounting hole. In addition, a metal plate has been conventionally used as the lining material (Japanese Utility Model Publication No. 4-55069).
[0003]
Furthermore, after providing a leg part on the back of the main body part of the lining material and inserting and fixing an anchor bolt into an attachment hole provided in the leg part, concrete is injected from an injection hole provided in the main body part, A lining structure in which anchor bolts are fixed with concrete is also known (Japanese Utility Model Publication No. 5-29224).
[0004]
[Problems to be solved by the invention]
However, according to the lining structure as described above, 2 to 4 anchor bolts are required for one lining material, so that a large number of anchor bolts are required as a whole, and the position of each anchor bolt is attached to the lining material. It must be embedded in the correct position to match the hole. In addition, there is a problem in workability, for example, when the mismatch between the anchor bolt and the mounting hole occurs during the laying operation, rework is required.
[0005]
In addition, when the anchor bolt mounting hole is provided in the lining material main body, the anchor bolt is fixed so that the tip of the anchor bolt is lower than the opening end of the mounting hole, so that the opening end is exposed to debris flow. However, there is a problem that wear progresses early from that portion. Although fitting the plug body to the open end is also performed, it is necessary to fit the plug body to all the mounting holes, which is a laborious operation.
[0006]
In addition, the anchor bolt fixed to the leg portion provided on the body portion of the lining material avoids the disadvantage that the mounting hole is exposed to debris flow, but it is necessary to match the anchor bolt with the mounting hole. In addition to problems such as workability due to the fact that the injection of concrete must be performed from the injection hole provided in the main body part after completion of the lining material installation work, it is necessary to provide an injection hole in the main body part, There is a problem that wear progresses early from the injection hole.
[0007]
Accordingly, in order to solve the above-described problems, the present invention has an object to provide a water channel lining structure and a water channel lining material that allow a lining material to be installed without using anchor bolt fixing means. To do.
[0008]
[Means for Solving the Problems]
In order to solve the above-described problems, a lining structure according to the present invention includes a gantry fixed to a recessed portion provided in a channel floor of a water channel, and includes a lining material main body and a leg portion with a collar provided on a back surface of the lining material. A configuration was adopted in which a large number of lining materials were arranged, concrete was filled between the recesses and the lining material, and the leg portions of the lining material were buried and fixed in the concrete.
[0009]
In order to solve the above-mentioned problem, the lining material according to the present invention is provided with four leg portions with collars on the back surface of the rectangular lining material body, and the flow direction of the water flow of the lining material body is A configuration in which a convex phase notch portion was provided on one end face and a concave phase notch portion was provided on the other end face was adopted.
[0010]
According to the above structure, the leg part with a collar provided in the back surface is fixed by concrete with the lining material, and the concrete is integrated with a mount. Accordingly, if the gantry is fixed to the main body concrete of the water channel by the anchor bolt, it is not necessary to fix the lining material individually by the anchor bolt.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the accompanying drawings. This embodiment relates to a lining structure and a lining material applied to a repaired portion 3 of a water channel 2 such as a flood discharge channel (overflow channel during flooding) constructed on a river dam 1 as shown in FIG. It is. Although the lining 4 by a steel plate etc. is given to the road floor and both side surfaces of said water channel 2, since the part which receives the impact of a debris flow tends to wear out, it will be necessary to repair the worn part. The lining structure and lining material of the embodiment are used for such a repair structure at the repair location 3.
[0012]
That is, as shown in FIG. 2, the lining structure of the embodiment is formed in a recess 5 (see FIG. 4) provided by excavating the roadbed of the repair location 3 to a fixed depth a between the linings 4 and 4 on both sides. The gantry 6 is constructed of a gantry 6 fixed to the recess 5, a large number of lining materials 7 laid on the upper surface of the gantry 6, and a concrete 8 that couples the gantry 6 and each linen material 7. The
[0013]
As shown in FIG. 3, the gantry 6 has a structure in which a plurality of unit gantry 6 a to 6 d long in the width direction of the water channel 2 are connected in the length direction of the water channel 2, and each gantry 6 a to 6 d is manufactured in a factory in advance. , And are suspended in the recess 5 in that order. Three anchor bolts 9 (see FIG. 6) are provided in advance on the bottom surface of the recess 5 per unit mount 6a to 6d. In FIG. 3 and others, a white arrow A indicates a flow direction.
[0014]
As shown in FIGS. 6 and 7, the first unit mount 6 a installed on the uppermost stream side is similar to the horizontal member 11 made of two parallel angle members having a length slightly shorter than the width of the water channel 2. The leg member 12 made of an angle member is fixed by welding, the two transverse members 11 are joined together by welding the longitudinal members 13 made of flat plates arranged at equal intervals, and the upstream transverse member 11 is further joined. Further, one end of an end member 14 made of a flat plate material is fixed by welding at the same position as the vertical member 13 in the same direction.
[0015]
The height b (see FIG. 2) from the lower end of the leg member 12 to the upper surface of the lateral member 13 is a height obtained by subtracting a thickness t of a lining material body 18 to be described later from a depth a of the recess 5. The upper surface of the vertical member 13 is formed lower than the upper surface of the horizontal member 11 by the plate thickness of the angle material. These points are the same in the other unit mounts 6b and 6c. Further, the upper surface of the end member 14 coincides with the upper surface of the transverse member 11. This is the same as the unit mount 6d.
[0016]
Each of the second and third unit mounts 6b and 6c has a structure in which the end member 14 is removed from the unit member 6a. The fourth unit member 6d includes one lateral member 11, a leg member 12 fixed to the lateral member 11, and one end of the end member 14 at a position coincident with each longitudinal member 13 on the downstream end surface of the lateral member 11. The part is fixed.
[0017]
As shown in FIGS. 6 to 8, these unit mounts 6 a to 6 d are suspended in the recess 5 in order, and are arranged at a predetermined interval from the upstream side. In the first, second, second, third, third, and fourth intervals, the unit mounts 6a to 6d weld the connecting member 15 made of the same flat plate material at the same position as the vertical member 13. Thus, the gantry 6 is completed by being connected and integrated with each other.
[0018]
Further, the anchor bolt 9 and the leg member 12 in the vicinity thereof are welded via a connecting reinforcing bar 16 (see FIG. 9), thereby fixing the gantry 6 to the main body concrete 17 on the bottom surface of the recess 5.
[0019]
Next, the lining material 7 is made of wear-resistant cast iron, and there are twelve types from A type to L type shown in FIGS. As shown in FIG. 22, one piece is arranged at the intersection of the above-mentioned gantry 6 assembled in a lattice shape. The four leg portions 19 of the lining material 7 are inserted into four locations that are partitioned with the intersection as the center. FIG. 23 shows the arrangement pattern. As shown in FIG. 23, the lining material 7 is arrange | positioned over 1-7 rows between the linings 4 and 4 of both sides, and 1-7 rows in order from the upstream. In the first row, A type to D type are arranged in the first to fourth columns, and the A type is arranged in the fifth column. In the 2nd to 6th rows, E type to H type are arranged in the 1st to 4th columns, and E type is arranged in the 5th column. In the seventh row, the I type to the L type are arranged in the first to fourth columns, and the I type is arranged in the fifth column.
[0020]
As shown in FIG. 10, these lining materials 7 are composed of a lining material main body 18 formed of a square flat plate and a columnar leg portion 19 provided close to the four corner portions on the back surface thereof. A structure in which a collar 21 is provided at a lower end and an intermediate portion of 19 is a basic shape, and a side surface (surface in the direction of flow) and an end surface (surface in the direction of flow) of the lining material body 18 are orthogonal to the arrangement position on the gantry 6. The shape of the surface is different.
[0021]
That is, the A-type to D-type in the first row are provided with an apron 22 on the upstream end face and a concave phase notch 23 on the downstream end face. In the A type, the left and right side surfaces are flat surfaces 24. Here, as shown in FIG. 10 (c), the concave phase notch portion 23 is a phase notch portion whose lower portion protrudes outward, and a phase portion whose upper portion protrudes outward (described later). It has a complementary shape to the convex phase notch 25). In the B type, the side surface in contact with the A type is a flat surface, and the concave phase notch portion 23 is provided on the side surface in contact with the C type. The C-type is provided with convex phase notches 25 on both left and right side surfaces. In the D type, a concave phase notch portion 23 is provided on a side surface in contact with the C type, and a flat surface 24 is provided on the side surface in contact with the A type.
[0022]
The E-type to H-type in the 2nd to 6th rows are different in that the portions of the apron 22 from the A-type to the D-type are all convex phase-out portions 25, but the other shapes are the same. .
[0023]
The I-type to L-type in the seventh row is different in that the concave phase notch 23 on the downstream end face of the E-type to H-type is an apron 22, but the other shapes are the same.
[0024]
In actual construction, the operation of arranging the second column, the second column, the fifth column, and the fourth column after the first column is performed, and finally the third column is arranged. In this case, the second row, the fourth row, and the sixth row in the third column are rotated backward, and the remaining opening 27 (see FIG. 22) is used as a concrete placement hole. Except for the opening 27, the lining material 7 in each column is formed so that the concave phase notch portion 23 and the convex phase notch portion 25 complement each other as shown in FIG. Combined. The aprons 22 and 22 abut against the inner end surface of the recess 5 at the upstream end surface and the downstream end surface, respectively. The lower end surface of the leg portion 19 is in contact with the bottom surface of the recess 5. However, there is no problem even if the lower end of the leg portion 19 is not in contact with the ground due to the unevenness of the bottom surface and is in a floating state.
[0025]
Further, as shown in FIG. 25, the lining material 7 in the first to fifth rows has a concave phase notch 23 and a convex phase notch 25 in the second and third rows, the third row and the fourth row. As described above, the lining material 7 in the third row is C-type, G-type, and K-type, and has convex phase notches 25 on both sides as described above. So it can be placed at the end. The first row, the second row, the fourth row, and the fifth row are so-called abutments where the flat surfaces 24 are abutted with each other. The shape of the lining material 7 in the fifth row is different, and eventually all of the first to fifth rows are of different types. However, when this portion is abutted as described above, the same type (A type, E type, I type) can be used in the first row and the fifth row, and the types of the lining material 7 are reduced. be able to.
[0026]
As described above, after the arrangement of the lining material 7 is completed while leaving the three openings 27, the concrete 8 is placed into the recess 5 from the openings 27. As shown in FIG. 26, the leg portion 19 of the G-shaped running material 7 is pushed into the concrete 8 in the opening 27 before the hardening of the concrete 8 starts in the portion of the opening 27 where the placement is completed. At this time, since both the left and right side surfaces of the lining material body 18 are the convex phase notches 25, they can be placed on the adjacent concave phase notches 23 in the second and fourth rows. In the front-rear direction, as shown in FIG. 27, the upstream end side is the convex phase cutout portion 25, so there is no problem as described above, but the downstream end side is the concave phase cutout portion 23. As shown by the chain line, while the lining material 7 is inclined so that the downstream end side is lowered, the concave phase notch portion 23 is first butted under the convex phase notch portion 25 of the downstream lining material 7, and then the upstream side Combine.
[0027]
In addition to the partial opening 27 for concrete placement as described above, a groove-shaped opening except for all the lining material 7 in the third row is provided, and after the placement, in order from the upstream side. The lining material 7 may be arranged. In both cases where the openings 27 are partially provided and when all the rows are openings, a sufficiently wide opening is formed for placing concrete, so the workability of the placing work is good. It is.
[0028]
FIG. 28 and FIG. 29 show a part of the state assembled as described above and the curing of the concrete 8 being completed. As described above, the gantry 6 is fixed to the main body concrete 17 by the anchor bolts 9, and the gantry 6 and the lining material 7 are integrated by the concrete 8 via the leg portions 19 having the flanges 21. With the above configuration, the number of anchor bolts used is significantly reduced as compared with the conventional case.
[0029]
Although the above embodiment described the case where the road bed of the water channel 2 is repaired, it can be similarly applied to the case where the side surface is repaired. Further, the structure of the present invention can be applied not only to repairing but also to a newly established water channel.
[0030]
【The invention's effect】
As described above, according to the present invention, the lower portion of the lining material arranged on the gantry is filled with concrete, and the concrete is fixed to the leg portion with the flange integrated with the lining material. There is no need to fix with anchor bolts. Accordingly, there is no need to provide a mounting hole in the lining material. Therefore, there is no troublesomeness to pay attention to the positional relationship between the mounting hole and the anchor bolt, and the workability of construction is greatly improved. In addition, since there are no mounting holes that cause premature wear due to debris flow, a stable water channel is constructed over a long period of time.
[Brief description of the drawings]
1 is a cross-sectional view showing an example of a water channel. FIG. 2 is an enlarged cross-sectional view taken along line 2-2 in FIG. 1. FIG. 3 is a plan view of a gantry according to an embodiment. FIG. 5 is a cross-sectional view taken along line 5-5 in FIG. 3. FIG. 6 is a perspective view showing an assembled state of the gantry. FIG. 7 is a perspective view showing an assembled state of the gantry. FIG. 9 is a perspective view showing the same pedestal. FIG. 10A is a plan view of the lining material. FIG. 9B is a side view of FIG. 11A is a plan view of a lining material. FIG. 12B is a side view of FIG. 11A. FIG. 11C is a front view of FIG. 12A. FIG. 12A is a plan view of the lining material. Side view of figure (c) Front view of figure (a) [Fig. 13] (a) Top view of lining material (b) Side view of figure (a) (c) Front view of figure (a) [Figure 14] (A) Top view of lining material b) Side view of (a) view (c) Front view of (a) view [FIG. 15] (a) Top view of lining material (b) Side view of (a) view (c) Front view of (a) view [Fig. 16] (a) Plan view of lining material (b) Side view of (a) view (c) Front view of Fig. 17 (a) Plan view of lining material (b) (a ) Side view of figure (c) Front view of figure (a) [FIG. 18] (a) Top view of lining material (b) Side view of figure (a) Front view of figure (c) (a) (A) Top view of lining material (b) Side view of (a) view (c) Front view of (a) view [FIG. 20] (a) Plan view of lining material (b) Side view of (a) view Fig. 21 (c) Front view of Fig. 21 (a) Top view of lining material (b) Side view of Fig. (A) Front view of Fig. 22 (a) Fig. 22 Plan view with lining materials arranged on top [Figure 2] [Fig. 24] Cross-sectional view taken along line 24-24 in Fig. 22 [Fig. 25] Cross-sectional view taken along line 25-25 in Fig. 22 [Fig. 26] Partial cross-section during construction of the embodiment FIG. 27 is a partial cross-sectional view showing the lining structure of the embodiment. FIG. 28 is a partial cross-sectional view showing the lining structure of the embodiment. FIG. 29 is a partial cross-sectional view showing the lining structure of the embodiment.
DESCRIPTION OF SYMBOLS 1 Dam 2 Waterway 3 Repair location 4 Lining 5 Recess 6 Base 6a-6d Unit base 7 Lining material 8 Concrete 9 Anchor bolt 11 Lateral member 12 Leg member 13 Vertical member 14 End member 15 Connecting member 16 Connecting rebar 17 Main body concrete 18 Lining material Body 19 Leg 21 Brim 22 Apron 23 Concave phase notch 24 Flat surface 25 Convex phase notch 26 Concrete 27 Opening

Claims (7)

A pedestal is fixed to a recess provided on the waterway floor, and a large number of lining materials consisting of a lining material main body and a leg portion with a flange provided on the back surface thereof are arranged on the pedestal, and between the recess and the lining material. A lining structure of a water channel in which concrete is filled and a leg portion of the lining material is fixed by the concrete. The water channel lining structure according to claim 1, wherein a plurality of the leg portions are provided in each lining material. The waterway lining structure according to claim 1 or 2, wherein the lining material is made of a wear-resistant metal. The lining structure of a water channel according to any one of claims 1 to 3, wherein the lining material main body is formed in a quadrangular shape, and the lining material main bodies adjacent to each other in the length direction of the water channel are combined in a phased structure. The lining material is arranged between the side walls of the water channel from the first row to the fifth row, and the lining material main bodies adjacent to each other in the width direction of the first row and the second row, and the fourth row and the fifth row have a butt structure. The lining material bodies adjacent to each other in the width direction of the second and third rows and the third and fourth rows of waterways are combined with each other in a phased structure in which the third row is overlaid. A lining structure of a waterway according to any one of the above. Four legged legs are provided on the back surface of the rectangular lining material body, and a convex phase notch portion is provided on one end surface of the lining material main body in the direction of water flow, and a concave phase notch portion is provided on the other end surface. Lining material for waterways. The lining material for a water channel according to claim 6, wherein convex phase notches are provided on both side surfaces of the lining material main body for closing the concrete placing hole among the lining materials arranged on the gantry.

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