JP2017227031A - Repairing method for capturing body, repaired structure of capturing body, capturing body and dam - Google Patents

Abstract

PROBLEM TO BE SOLVED: To realize connection of an exchanging member to an existing part even in a case where the existing part of a capturing body is deformed.SOLUTION: A capturing body comprises a prop (31) and a beam (32). A damaged part of the capturing body (3) allowing water from upstream side of a river to flow through and capturing soil, stone and drift wood is cut off and removed. An annular member (8) is movably attached onto peripheral surface of at least one existing part (5) of the prop (31) and the beam (32) of the capturing body (3) where the damaged part (DP) is removed. An exchanging member (6) which is exchanged with the damaged part is placed on the annular member (8). Fixing position of the exchanging member (6) placed on the annular member (8) relatively to the existing part (5) is adjusted to be determined. The annular member (8) is fixed onto the existing part (5) at the fixing position of the exchanging member (6) relatively to the existing part (5). The exchanging member (6) is fixed onto the annular member (8) fixed onto the existing part (5).SELECTED DRAWING: Figure 1

Description

  The present invention relates to a capturing method for a capturing body, a repairing structure for the capturing body, a capturing body, and a dam.

In mountainous rivers, weirs are installed to prevent landslides caused by typhoons and heavy rain. The dam suppresses the passage of rocks and driftwood contained in the debris flow while allowing water to pass through. In particular, a grid-type steel dam with a trapping body in which steel pipe columns and steel pipe beams are combined in a three-dimensional lattice shape is known in order to capture rocks and driftwood contained in the debris flow in the permeation part through which water passes. (For example, refer to Patent Document 1).
In the capturing body, the upper end portion of the column member (post) and the column head portion protruding downward from the beam member (lateral beam) arranged in the transverse direction of the river are joined by a flange. Moreover, the beam end member is embedded in the non-overflow portion of the dam, and both ends of the beam member are joined to the beam end member via a flange (for example, see Patent Document 2).

JP-A-6-10330 JP 2011-89393 A

By the way, due to the occurrence of debris flow, a large rock R having an unexpected gravel diameter may collide with the capturing body 300 of the transmission type dam 100 as shown in FIG. Although the rock R is captured by the capturing body 300, an impact force more than expected is applied to the support post 310 and the beam 320 of the capturing body 300, and the support structure 310 and the beam 320 of the capturing body 300 may be deformed or damaged.
The trapped body 300 that has been deformed or damaged can be removed from the trapped body 300 by replacing the flanges F of the support column 310 and the beam 320, and replaced with a new portion.
However, the existing part of the capturing body 300 is often deformed due to the collision with the rock R, and the position of the flange portion F of the existing part in the capturing body 300 may be shifted from the initial design position. In other words, it may be difficult to newly attach what is formed based on the initial design.

  Therefore, the present invention has been made in view of the above problems, and even when the existing portion of the capturing body is deformed, the capturing method of the capturing body that facilitates fixing of the replacement member to the existing portion An object of the present invention is to provide a repair structure for a capturing body, a capturing body, and a dam.

  The present invention is a method for repairing a capturing body that includes a column and a beam, allows flowing water flowing from the upstream of a river and captures debris and driftwood, and cuts and removes the damaged portion of the capturing body, An annular member is attached to the outer peripheral surface of at least one of the supporting column and the beam of the capturing body from which the damaged portion has been removed so as to be movable relative to the outer peripheral surface, and the annular member is replaced with the damaged portion. The replacement member to be mounted is placed, and the fixing position of the replacement member placed on the annular member is determined by adjusting, and the annular member is fixed at the fixing position of the replacement member with respect to the existing portion. The replacement member is fixed to the existing portion, and the replacement member is fixed to the annular member fixed to the existing portion.

  In addition, an adjustment member that adjusts the fixing position of the annular member with respect to the existing portion is provided on the outer peripheral surface of the existing portion, and the position of the annular member is adjusted in a state where the annular member is temporarily placed on the adjustment member. preferable.

  Moreover, it is preferable to remove the adjustment member from the existing portion after the replacement member is fixed to the existing portion.

  Moreover, it is preferable to cut | disconnect the said damage site | part in the site | part which is not damaged in the said capture body.

  In addition, it is preferable that the capturing body is configured by connecting a plurality of support columns and a plurality of beams, and cutting the damaged portion at a position other than the support column or the connecting portion of the beams.

  Further, before fixing the annular member to the existing part, a backing member is attached to the existing part on the back surface opposite to the surface of the annular member for fixing the replacement member, in contact with the back surface. It is preferable to fix.

  Moreover, it is preferable to remove the replacement member placed on the annular member before fixing the annular member to the existing portion.

  Moreover, it is preferable to mark the attachment position of the replacement member with respect to the annular member before removing the replacement member from the annular member.

  Further, it is preferable that the annular member is joined to the existing portion from above the capturing body.

  The present invention is a repair structure that includes a column and a beam, passes a flowing water flowing upstream from a river, and repairs a damaged portion of a capturing body that captures debris and driftwood, wherein the damaged portion is removed. An annular member fixed to an outer peripheral surface of at least one of the support column and the beam in the capturing body, and an exchange member fixed to the annular member and exchanged with the damaged portion. .

  An adjustment that is attached to the outer peripheral surface of the existing portion, supports the annular member from the opposite side of the annular member facing the replacement member, and adjusts the fixing position of the annular member with respect to the existing portion. It is preferable to provide a member.

  Moreover, it is preferable that the said adjustment member is provided with respect to the said existing part so that attachment or detachment is possible.

  Moreover, it is preferable to provide the backing member fixed to the outer peripheral surface of the said existing part, contacting the back surface of the said annular member on the opposite side to the surface which faces the said replacement member.

  Moreover, it is preferable that the inner periphery of the said annular member has a taper part diameter-reduced toward the said back surface from the surface where the said replacement member is fixed.

  Moreover, it is preferable that the internal diameter of the said replacement member is larger than the outer diameter of the said existing part in a cutting position side rather than the fixed position of the said annular member with respect to the said existing part.

  Moreover, it is preferable that the said adjustment member has a support part which supports the said annular member, and the said support part can advance and retract toward the said annular member.

  The present invention is a capturing body, wherein the repair structure described above is provided in the existing part from which the damaged site has been removed.

  The present invention is a dam and is characterized in that the above-described capturing body is provided in a permeation portion through which running water passes.

  According to the present invention, even if the existing part of the capturing body is deformed, the replacement member can be easily fixed to the existing part of the capturing body.

It is a front view of a transmission type dam with a repaired capturing body. It is a side view of the capture body after repair, (a) is a side view in IIa of FIG. 1, (b) is a side view in IIb of FIG. It is a figure which shows the replacement member of the damage site | part of a capture body, (a) is a front view, (b) is a side view. It is an enlarged view for demonstrating a repair structure. It is a perspective view of the annular member in a repair structure. (A) is a side view of the capturing body before damage, (b) is a side view of the capturing body where a boulder in the debris flow collides, and (c) is a side view of the capturing body that is deformed or damaged. (A) is a side view of the capturing body showing the cutting position of the damaged site, and (b) is a side view of the existing part of the capturing body after cutting the damaged site. It is a figure which shows installation of the replacement member to the existing part of a capturing body. (A) is a figure explaining attachment to the existing part of the adjustment member in a repair structure, (b) is a figure explaining mounting to the adjustment member of the annular member in a repair structure. (A) is a figure explaining mounting of the replacement member to an existing part, (b) is a figure explaining positioning of the fixed position of an annular member. (A) is a figure explaining fixation of a backing member, (b) is a figure explaining removal of an adjustment member. It is a front view of a dam with a damaged capturing body.

  A preferred embodiment of the present invention will be described with reference to the drawings. In addition, embodiment shown below is one illustration and can take a various form in the scope of the present invention.

  FIG. 1 is a front view of a dam with a repaired capturing body. 2 is a side view of the capturing body after repair, (a) is a side view taken along IIa in FIG. 1, and (b) is a side view taken along IIb in FIG. 3A and 3B are diagrams showing an exchange member for a damaged part of the capturing body, in which FIG. 3A is a front view and FIG. 3B is a side view. FIG. 4 is an enlarged view showing the IV portion of FIG. 1 in order to explain the repair structure. FIG. 5 is a perspective view of an annular member in the repair structure.

<Configuration of dam>
First, the structure of the dam 1 is demonstrated using FIG. The bottom of the dam 1 is buried in the ground, and is constructed so as to extend along the width direction of the river so as to cross the river. The dam 1 is constructed of concrete or soil cement, for example. In the dam 1, the wall surface facing the upstream side or the downstream side of the river may be a steel plate wall formed by connecting a plurality of steel segments, and the inside thereof may be filled with concrete or soil cement.
The dam 1 is a so-called permeable dam, and includes a permeable portion 2 through which flowing water flows from the upstream of the river, and a capturing body 3 provided in the permeable portion 2 for passing the flowing water and capturing debris and driftwood. .

(Transmission part)
The permeation | transmission part 2 is formed between a pair of non-overflow parts 11 which respectively connect to the bank of a river, and prevent the overflow of the debris and driftwood from an upstream, as shown in FIG.

(Captured body)
The trapping body 3 shown in FIG. 1 replaces a damaged portion DP (see FIG. 6C) that has been damaged by collision with gravel or driftwood having an unexpected diameter with a new member (an exchange member 6 described later). Repaired. The capturing body 3 is provided in the transmission part 2 along the extending direction of the dam 1, that is, the width direction of the river.
The capturing body 3 includes a plurality of support columns 31, a plurality of beams 32 extending between the support columns 31, and a repair portion 4.

[Posts and beams]
The support column 31 is formed of, for example, a steel pipe, and is erected on the bottom of the transmission portion 2 at a predetermined interval along the extending direction of the dam 1. As shown in FIG. 2A, the support column 31 includes an upstream support column 31a erected on the upstream side and a downstream support column 31b erected on the downstream side. The upstream column 31a and the downstream column 31b are connected to each other. The upstream column 31a extends obliquely upward from the upstream side toward the downstream side, and the downstream column 31b extends obliquely upward from the downstream side toward the upstream side.

  Returning to FIG. 1, the upstream column 31 a has a plurality of beam portions 31 c extending in the extending direction of the dam 1 from the upper side to the lower side in the height direction of the dam 1. The beam 32 is formed by connecting the beam portions 31c of the adjacent upstream columns 31a to each other. More specifically, a flange portion (connection portion) F is provided at the tip of each beam portion 31c, and the beam 32 is formed by connecting the flange portions F of the adjacent beam portions 31c to each other.

As shown in FIG. 2A, the downstream column 31b is connected to the upstream column 31a at the upper end. The downstream column 31b is connected to the upstream column 31a via a connecting beam 33 extending in the river flow direction at the intermediate portion. The connecting beam 33 includes a connecting beam portion 33a extending downstream from the intermediate portion of the upstream column 31a and a connecting beam portion 33b extending upstream from the intermediate portion of the downstream column 31b. It is formed by being connected to each other via a flange portion F included in the.
As shown in FIG. 2 (b), there is a portion where the downstream column 31b is not connected to the upstream column 31a in the extending direction of the capturing body 3. For example, the downstream column 31b includes the upstream column 31b. Every other one is connected to 31a.

[Repair part]
In FIG. 1, the repaired portion 4 surrounded by a two-dot chain line has the replacement member 6 fixed to the existing portion 5 of the capturing body 3 in place of the damaged portion DP (see FIG. 6C) where the capturing body 3 is deformed or broken. Part. Here, the “existing part” is the remaining part of the capturing body 3 after removing the damaged part DP, and is the part of the capturing body 3 that has been installed in the transmission part 2 since the construction of the dam 1. Further, the existing part 5 is a part that is not deformed at all or a part that is lightly deformed.

The exchange member 6 is exchanged for the damaged part DP of the capturing body 3. As shown in FIG. 3A, the replacement member 6 is formed by integrally forming a plurality of support columns 61 and a plurality of beams 62. That is, the exchange member 6 does not form the beam 32 by connecting the columns 31 to each other via the flange portion F like the capturing body 3 before the exchange.
The support | pillar part 61 has the upstream support | pillar part 61a and the downstream support | pillar part 61b, as shown in FIG.3 (b). The upper end portion of the downstream column portion 61b is integrally connected to the upstream column portion 61a.

The upstream strut 61 a has a fixed portion 63 at a position where it is fixed to the upstream strut 31 a of the existing portion 5 of the capturing body 3. The fixed portion 63 has an annular portion 63a and a cylindrical portion 63b. The annular portion 63a protrudes radially outward from the outer peripheral surface of the upstream column portion 61a.
As shown in FIG. 4, the cylindrical part 63b is located at the lower end of the upstream column 61a and is integrally connected to the annular part 63a. The maximum inner diameter of the exchange member 6 is larger than the outer diameter of the upstream column 31a, which is closer to the cutting position than the fixed position of the annular member 8 with respect to the outer peripheral surface of the upstream column 31a of the existing portion 5. That is, the cylindrical portion 63 b of the replacement member 6 has an outer diameter larger than the outer diameter of the upstream column 31 a of the existing portion 5.

  The beam portion 62 of the exchange member 6 has a fixed portion 64 at a position where the beam portion 31 c of the upstream column 31 a in the existing portion 5 of the capturing body 3 is fixed. Since the configuration of the fixed portion 64 is the same as that of the fixed portion 63 of the upstream column 61a, the description thereof is omitted.

  The downstream column 61b has a fixed portion 65 at a position where the downstream column 31b is fixed to the existing portion 5 of the capturing body 3. Since the configuration of the fixed portion 65 is the same as that of the fixed portion 63 of the upstream column 61a, description thereof is omitted.

<Repair structure>
The structure of the repair structure 7 used for repairing the capturing body 3 will be described with reference to FIGS. 4 and 5. FIG. 4 is an enlarged view for explaining the structure of the repair structure. FIG. 5 is a perspective view of an annular member in the repair structure. As shown in FIG. 4, the repair structure 7 includes the replacement member 6, the annular member 8, and the adjustment member 9.

(Annular member)
The annular member 8 is formed in a disc shape, and a hole 80 through which the column 31 or the beam 32 of the existing portion 5 is inserted is formed at the center thereof. The annular member 8 is fixed to the outer peripheral surface of the existing portion 5 of at least one of the column 31 and the beam 32 in the capturing body 3 from which the damaged portion DP has been removed. The annular member 8 protrudes radially outward from the outer peripheral surface of the upstream column 31 a of the existing portion 5 in a state where it is attached to the existing portion 5. The annular member 8 is temporarily placed on the adjustment member 9 with respect to the outer peripheral surface of the existing portion 5 before being fixed to the outer peripheral surface of the existing portion 5. The annular member 8 is movable with respect to the outer peripheral surface of the existing portion 5 in a state of being temporarily placed on the adjustment member 9. In a state where the annular member 8 is fixed to the outer peripheral surface of the existing portion 5, the replacement member 6 is fixed to the surface of the annular member 8.

  As shown in FIG. 5, the inner peripheral edge of the annular member 8 has a tapered portion (groove) 83 that decreases in diameter from the front surface 81 to which the replacement member 6 is fixed toward the rear surface 82. Further, in a state where the annular member 8 is fixed to the outer peripheral surface of the existing portion 5, a backing member 84 that is in contact with the rear surface 82 and is fixed to the outer peripheral surface of the existing portion 5 is provided on the rear surface 82 of the annular member 8. It has been. The backing member 84 is formed of a band-shaped metal plate.

(Adjustment member)
As shown in FIG. 4, the adjustment member 9 supports the annular member 8 from the back surface 82 side, and the fixing position of the annular member 8 with respect to the outer peripheral surface of the upstream column 31a of the existing part 5 is determined in the axial direction of the upstream column 31a. The height is adjusted along the direction h. The adjustment member 9 is detachably provided on the outer peripheral surface of the upstream column 31a on the back surface 82 side of the annular member 8.
The adjustment member 9 includes a split piece 90, a magnet 91, and a support portion 92.

The split piece 90 is formed, for example, by dividing a disk having a hole in the center into half. Each of the split pieces 90 is formed so that the inner peripheral edge is along the outer peripheral surface of the existing portion 5. The split piece 90 is attached to the outer peripheral surface of the existing portion 5 so that the surface thereof intersects (orthogonally) the axis of the column 31 or the beam 32 of the existing portion 5. The split piece 90 is attached to the existing portion 5 so that the end portions thereof face each other, and when attached, the split piece 90 has a substantially annular shape in plan view.
The magnet 91 supports the divided piece 90 from below and fixes the divided piece 90 to the existing portion 5 by magnetic force. The magnet 91 is attached to the outer peripheral surface of the existing portion 5, and is removed after the replacement member 6 is fixed to the existing portion 5. The magnet 91 may be formed in a semicircular shape like the divided piece 90, or may be attached at a predetermined interval below the divided piece 90. Moreover, the division | segmentation piece 90 and the magnet 91 may be formed integrally.
The support portion 92 is provided so as to penetrate the back surface from the front surface of the split piece 90. The support portions 92 are arranged on the divided pieces 90 at predetermined intervals (for example, every 45 °, 60 °, 90 °, or 180 °). The support part 92 includes a bolt 92a and a nut 92b without a head. The bolt 92 a has a thread groove formed in almost the entire axial direction, and is inserted into the divided piece 90. Two nuts 92 b are provided, one screwed to the bolt 92 a above the divided piece 90, and the other screwed to the bolt 92 a below the divided piece 90. That is, the amount of protrusion of the bolt 92a from the split piece 90 can be adjusted by changing the screwing position of the nuts 92b to the bolt 92a. The annular member 8 is supported by the upper end of the bolt 92a, and the position of the annular member 8 in the height h direction with respect to the outer peripheral surface of the existing portion 5 can be adjusted by adjusting the fixing position of the bolt 92a to the split piece 90.

<Repair method>
Next, a method for repairing the capturing body 3 will be described with reference to FIGS. 6 (a) is a side view of the capturing body before damage, FIG. 6 (b) is a side view of the capturing body with which a boulder in the debris flow collides, and FIG. 6 (c) is a capturing body that is deformed or damaged. FIG. FIG. 7A is a side view of the capturing body showing the cutting position of the damaged site, and FIG. 7B is a side view of the existing part of the capturing body after cutting the damaged site. FIG. 8 is a diagram illustrating the installation of the replacement member on the existing part of the capturing body. FIG. 9A is a diagram illustrating attachment of the adjustment member to the existing portion in the repair structure, and FIG. 9B is a diagram illustrating placement of the annular member on the adjustment member in the repair structure. It is. FIG. 10A shows a state in which the replacement member is temporarily placed on the annular member, and FIG. 10B is a diagram for explaining the positioning of the annular member by the adjusting member. FIG. 11A is a diagram illustrating a state in which the backing member is fixed, and FIG. 11B is a diagram illustrating a state in which the adjustment member is removed and repair of the capturing body is completed.

  As shown in FIGS. 6A to 6C, for example, when a rock R having an unexpected gravel diameter flows from the upstream and collides with the upstream column 31 a and the beam 32 of the capturing body 3, It is necessary to repair the capturing body 3 having the formed damaged part DP.

  First, the position where the damaged site DP is cut from the capturing body 3 is determined. As shown in FIG. 7A, the cutting position indicated by the alternate long and short dash line is set to a portion that is not damaged or deformed in the capturing body 3 or a portion that is slightly damaged or deformed. The cutting position is set at a place other than the flange portion F (connecting portion) of the column 31 or the beam 32. As shown in FIG. 7B, the portion including the damaged portion DP of the capturing body 3 is cut and removed at the cutting position. After removal, the shape of the existing part 5 of the capturing body 3 is surveyed.

Next, the replacement member 6 to be attached to the damaged site DP is prepared based on the information obtained by surveying (see FIG. 8). Before fixing the replacement member 6 to the existing portion 5 of the capturing body 3, the split piece 90 and the support portion 92 are attached to the outer peripheral surface of the existing portion 5 via the magnet 91.
A method for adjusting the fixing position of the annular member 8 by the adjusting member 9 will be described with reference to FIG. In FIG. 9, the adjustment member 9 attached to the outer peripheral surface of the upstream column 31 a of the capturing body 3 is shown, but the existing part 5 is fixed to the downstream column 31 b and the beam part 31 c of the existing part 5 is fixed. The same method can be applied to the fixing of.

As shown in FIG. 9 (a), each divided piece 90 of the adjustment member 9 is attached to the outer peripheral surface of the upstream column 31a via a magnet 91 so that the outer peripheral surface of the upstream column 31a is surrounded by the divided piece 90. It becomes a state.
Next, as shown in FIG. 9B, the annular member 8 is placed on the support portion 92 of the adjustment member 9. Specifically, the bolt 92 a supports the annular member 8 from the back surface 82. In this state, the annular member 8 is temporarily placed on the support portion 92 of the adjustment member 9, and is movable with respect to the outer peripheral surface of the upstream column 31a.

Next, the fixing position of the replacement member 6 placed on the annular member 8 with respect to the existing portion 5 is adjusted and determined. This will be specifically described below.
As shown in FIG. 10A, the replacement member 6 is placed (temporarily placed) on the surface 81 of the annular member 8 that is temporarily placed on the support portion 92 while being suspended by a crane or the like. In a state where the exchange member 6 is placed on the annular member 8 by the cylindrical portion 63 b of the fixed portion 63, the position (posture) of the annular member 8 is adjusted by the adjustment member 9.
When repairing the capturing body 3 using the replacement member 6 having three upstream column portions 61a as shown in FIG. 3 (a), the cylindrical portions 63b of all three upstream column portions 61a extend over the entire circumference. The position (posture) of each annular member 8 is adjusted so as to contact the surface 81 of the corresponding annular member 8. For example, even when the cylindrical portions 63b of the two upstream struts 61a are in contact with the surface 81 of the corresponding annular member 8 over the entire circumference, as shown in FIG. The cylindrical portion 63b of the two upstream column portions 61a may not be in partial contact with the surface 81 of the annular member 8.
In such a case, as shown in FIG. 10 (b), the bolt 92 a of the adjustment member 9 is advanced and retracted with respect to the annular member 8, and the cylindrical portion 63 b of the upstream column 61 a is brought into contact with the surface 81 of the annular member 8. The welding (fixed) position and the welding (fixed) posture of the annular member 8 with respect to the outer peripheral surface of the upstream column 31a of the existing portion 5 are adjusted so as to contact the entire circumference. Thus, the fixing position of the annular member 8 on the outer peripheral surface of the upstream column 31a is determined.

  Further, the replacement member 6 placed on the annular member 8 is moved on the annular member 8 so that the axis x1 approaches the axis x2 of the upstream column 31a of the existing portion 5. Thus, the welding (fixed) position of the replacement member 6 in the annular member 8 is determined.

  Next, as shown in FIG. 11A, the backing member 84 is fixed to the outer peripheral surface of the upstream column 31 a of the existing portion 5 by, for example, welding while being in contact with the back surface 82 side of the annular member 8. By fixing the backing member 84, the annular member 8 is securely held at the fixed position on the outer peripheral surface of the upstream column 31a. Moreover, it is preferable to mark the fixing position of the replacement member 6 with respect to the annular member 8 before removing the replacement member 6 temporarily placed on the annular member 8 from the annular member 8 once.

Next, the replacement member 6 is removed from the annular member 8, and the annular member 8 is welded and fixed to the outer peripheral surface of the upstream column 31a from above the capturing body 3. Specifically, the annular member 8 is welded from the front surface 81 side toward the back surface 82 and the backing member 84 in the tapered portion 83.
After the annular member 8 is welded, the replacement member 6 is placed on the surface 81 of the annular member 8 again based on the marking M and welded. Thereby, fixation to the existing part 5 of the capture body 3 of the replacement member 6 is completed.
Finally, as shown in FIG. 11 (b), the repair of the capturing body 3 is completed by removing the adjustment member 9 from the outer peripheral surface of the upstream column 31 a of the existing portion 5.

  As described above, since the replacement member 6 is not directly welded and fixed to the existing portion 5 but the replacement member 6 is fixed to the existing portion 5 of the capturing body 3 via the annular member 8, the capturing body 3 can be simplified. Can be repaired, and the cost for repair can be reduced. In particular, when the existing portion 5 of the capturing body 3 is deformed, the repair work becomes extremely easy.

In addition, once the replacement member 6 is temporarily placed on the annular member 8, the outer periphery of the upstream column 31 a of the existing portion 5 so that the cylindrical portion 63 b of the replacement member 6 contacts the entire surface 81 of the annular member 8. The fixing position of the annular member 8 with respect to the surface can be determined to be movable. Thereby, even if the existing part 5 is displaced (deformed) from the initial design state, the axis x1 of the upstream column 61a of the replacement member 6 and the axis of the upstream column 31a of the existing part 5 The replacement member 6 can be appropriately fixed to the existing portion 5 of the capturing body 3 while allowing the displacement (displacement) of the center x2. Furthermore, since the fixing position of the annular member 8 is adjusted by the bolt 92a and the nut 92b of the adjusting member 9, the fixing position can be accurately set including the posture of the annular member 8 with respect to the outer peripheral surface of the existing portion 5.
Further, since the replacement member 6 is temporarily placed on the annular member 8 before being fixed to the annular member 8, for example, the axis x2 of the existing portion 5 and the axis x1 of the upstream column 61a of the replacement member 6 Can be adjusted to approach each other in the radial direction of the existing portion 5.

  Further, since the damaged portion DP is cut at the existing portion 5 where the capturing body 3 is not damaged or is hardly deformed, the replacement member 6 can be fixed to the existing portion 5 of the replacement member 6 with high accuracy.

  Further, since the backing member 84 is fixed to the outer peripheral surface of the existing portion 5 in a state in which the annular member 8 is in contact with the back surface 82, the annular member 8 is formed at the tapered portion 83 from above, that is, from the front surface 81 side of the annular member 8. Can be welded to the outer peripheral surface of the existing portion 5. Thereby, the welding operation of the annular member 8 is facilitated, and the accuracy of welding is increased.

  Further, by marking the position where the replacement member 6 is attached to the annular member 8, the replacement member 6 is quickly and accurately placed on the annular member 8 after fixing the annular member 8 to the outer peripheral surface of the existing portion 5. be able to.

  Moreover, since the internal diameter of the cylindrical part 63b of the replacement member 6 is larger than the outer diameter of the existing part 5, the connection part with the existing part 5 of the replacement member 6 can exhibit the intensity | strength more than repair.

DESCRIPTION OF SYMBOLS 1 Dam 2 Permeation | transmission part 3 Capture body 31 Support | pillar 31a Upstream side support 31b Downstream support 31c Beam part 32 Beam 4 Repair part 5 Existing part 6 Replacement member 61 Support part 61a Upstream support part 61b Downstream support part 62 Beam part 63, 64, 65 Fixed portion 63a Annular portion 63b Cylindrical portion 7 Repair structure 8 Annular member 80 Hole 81 Front surface 82 Back surface 83 Tapered portion 84 Backing member 9 Adjusting member 90 Split piece 91 Magnet 92 Support portion 92a Bolt 92b Nut DP Damaged part M Marking R Rock

Claims (18)

A method of repairing a capturing body comprising a column and a beam, passing flowing water flowing upstream from a river and capturing debris and driftwood,
Cutting and removing the damaged part of the capturing body,
An annular member is attached to an outer peripheral surface of at least one of the support column and the beam of the capture body from which the damaged portion has been removed, so as to be movable with respect to the outer peripheral surface,
Place the replacement member to replace the damaged part on the annular member,
The adjustment of the replacement member placed on the annular member is determined by adjusting the fixing position with respect to the existing part,
Fixing the annular member to the existing portion at the fixing position of the replacement member with respect to the existing portion;
A method for repairing a capturing body, wherein the replacement member is fixed to the annular member fixed to the existing portion.   An adjusting member for adjusting the fixing position of the annular member with respect to the existing portion is provided on the outer peripheral surface of the existing portion, and the position of the annular member is adjusted in a state where the annular member is temporarily placed on the adjusting member. The method for repairing a capturing body according to claim 1.   The method of repairing a capturing body according to claim 2, wherein after the replacement member is fixed to the existing part, the adjustment member is removed from the existing part.   The method for repairing a capturing body according to any one of claims 1 to 3, wherein the damaged portion is cut at an undamaged portion in the capturing body. The capturing body is configured by connecting a plurality of support columns and a plurality of beams,
The method for repairing a capturing body according to any one of claims 1 to 4, wherein the damaged portion is cut at a place other than the support portion of the support column or the beam.   Prior to fixing the annular member to the existing portion, a backing member is fixed to the existing portion on the back surface opposite to the front surface of the annular member for fixing the replacement member in contact with the back surface. The method for repairing a capturing body according to any one of claims 1 to 5, characterized in that:   The method of repairing a capturing body according to any one of claims 1 to 6, wherein the replacement member placed on the annular member is removed before the annular member is fixed to the existing portion.   The method of repairing a capturing body according to claim 7, wherein marking is performed at a position where the replacement member is attached to the annular member before the replacement member is removed from the annular member.   The method for repairing a capturing body according to any one of claims 1 to 8, wherein the annular member is joined to the existing portion from above the capturing body. A repair structure comprising a column and a beam, for passing the flowing water flowing from the upstream of the river and repairing the damaged part of the capturing body for capturing debris and driftwood,
An annular member fixed to an outer peripheral surface of at least one of the pillar and the beam in the capturing body from which the damaged portion has been removed;
An exchange member fixed to the annular member and exchanged with the damaged portion;
A capturing structure for a capturing body, comprising:   An adjusting member attached to the outer peripheral surface of the existing part, supporting the annular member from the opposite side of the annular member facing the replacement member, and adjusting the fixing position of the annular member with respect to the existing part The repair structure for a capturing body according to claim 10, further comprising:   The repair structure for a capturing body according to claim 11, wherein the adjustment member is detachably attached to the existing portion.   The back member of the said annular member on the opposite side to the surface which faces the said replacement member is provided, The backing member fixed to the outer peripheral surface of the said existing part is provided, The any one of Claim 10-12 characterized by the above-mentioned. The repair structure of the capturing body according to one item.   The repair structure for a capturing body according to claim 13, wherein the inner peripheral edge of the annular member has a tapered portion that decreases in diameter from the front surface to which the replacement member is fixed toward the rear surface.   The inner diameter of the replacement member is larger than the outer diameter of the existing portion on the cutting position side with respect to the fixing position of the annular member with respect to the existing portion. The repair structure of the capturing body.   The repair structure for a capturing body according to claim 11, wherein the adjustment member includes a support portion that supports the annular member, and the support portion is movable forward and backward toward the annular member.   A capturing body comprising the repairing structure for a capturing body according to any one of claims 10 to 16 in the existing portion from which the damaged site has been removed.   A dam with the capturing body according to claim 17 provided in a transmission portion through which running water passes.

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