JP2011094441A - Existing waterway repairing panel and waterway repairing method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To repair an aging waterway safely and reliably at a low cost in a short period. <P>SOLUTION: A thin and comparatively light in weight panel 1 has a plurality of bolt insertion holes 6 and is molded of a material excellent in wear resistance. With a predetermined space provided through a spacer 9 using the panel, the panel of a material exhibiting excellent wear resistance such as resin concrete is arranged/fixed to the inner face as a face A to be repaired for an agricultural waterway, filling and solidifying a filler in the space formed between the panel and the repaired face. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

The present invention relates to a panel for repairing an existing water channel and a repair method.

The waterways made of concrete may become uneven due to erosion and deterioration of the inner side surface and bottom surface due to long-term use, and it may affect the water flow due to sediment and floating substances accumulated there, and cause a strange odor. is there. If this deterioration is left unattended, there is a problem in that the deterioration progresses to cause water leakage and the like, and the water channel itself is destroyed.

In order to solve such problems, resin such as resin concrete that has been repaired individually or filled with mortar, etc., by filling mortar etc. on the inner side or bottom of the deteriorated waterway There is a method in which a plate-like panel made of a system material is bonded to the entire inner side surface and bottom surface of the water channel, and the entire water channel is repaired collectively. (Patent Document 1)

As a method other than adhesion, there is a method of repairing the entire water channel by providing a spacer to secure a gap by providing a convex portion on the back surface of a plate-like panel and filling and solidifying the mortar in the gap. (Patent Document 2)

As a method for fixing the panel, there is a perforated opening in the convex part for ensuring the gap on the back of the panel, an anchor is driven into the repair surface of the water channel from the perforated opening, and the panel is directly fixed with screws, A repair method has been proposed in which a gap formed by the convex portions is filled with mortar. (Patent Document 3)

Furthermore, as another method for fixing the panel, there is a method in which ruler concrete is disposed on the inner surface of the water channel, the panel is disposed through the ruler concrete, and the panel is fixed with bolts and nuts. (Patent Document 4)

Japanese Patent No. 3648493 JP 2007-146604 A JP 2008-127853 A JP-A-5-9917

Formed using a method of bonding the panel to the repaired part that has unevenness on the inner side surface or the lower surface due to aging deterioration of the existing water channel, or simply using the convex part on the back side of the panel, or using a spacer such as ruler concrete In the method of filling the gap with mortar or the like, the panel cannot be kept flush, and the surface after repair by the panel is bent due to the weight of the filler such as mortar.

In addition, a convex portion is provided in order to maintain a gap at a predetermined interval from the inner surface of the water channel, and a hole for fixing the water channel with a screw is provided in the convex portion so that the head of the screw does not protrude from the outside of the panel. This is because at least the head of the screw is positioned inside the panel in order to be flush with each other.

In order to fix the plate-like panel to the existing water channel, there are hunches at both ends of the bottom surface of the inner surface of the existing water channel, so it is necessary to take a relatively wide gap, and the amount of filler such as mortar to be filled in the gap is large. Not only is the wasteful cost and the time required for the filling increased, but also the inner air cross section becomes smaller, leading to a decrease in the flow rate.

There are many repair points on the existing waterways at the bottom and bottom of the inner side surface, and in order to secure a gap between the panel that has the repair point and the panel, there is a ruler on the surface that has the repair point that is uneven due to deterioration. It is necessary to arrange a plurality of spacer members such as concrete, and the labor for arranging the spacers in consideration of unevenness due to the unevenness is great, and it is often difficult to arrange the panels at predetermined positions.

As a method for dealing with the uneven surface of the deteriorated repair required part, a method of absorbing the rubber by interposing the rubber between the convex portion on the back surface of the panel and the inner surface of the water channel has been proposed. The unevenness of only a certain part was absorbed, and it was difficult to finish the other parts at the same level due to the influence of the unevenness of the repaired parts so that the inner surface after repairing deteriorated.

Furthermore, since these are heavy objects or have a large product size, the time and cost required for construction are large.

The present invention is made of a material excellent in wear resistance in order to easily and inexpensively repair a repair point where a water channel inner side surface or bottom surface is eroded due to deterioration of an existing water channel and corrosion of a reinforcing bar is a concern. It is in providing the formed panel and the restoration method of the existing water channel by the said panel.

The invention according to claim 1 of the present invention is a panel made of an abrasion-resistant material that is attached to a repair-required surface on which concrete has deteriorated, such as an inner side surface and a bottom surface of an existing water channel, with a thickness of 20 mm to 70 mm. The panel is an existing water channel repair panel characterized in that it has a plurality of bolt insertion holes having stepped portions and is molded with a weight of 50 kg or less.

The present invention is an existing water channel repair panel molded from a wear-resistant material in order to repair the inner surface of an aged existing water channel, and the repair panel has a plurality of bolt insertion holes, The insertion hole is larger than a bolt for attaching the panel to an existing water channel, and the insertion hole has a polygonal, circular, or oval through hole on the existing water channel repair surface side of the panel. The bolt is inserted into the bolt insertion hole that forms the portion, and the bolt is screwed and positioned to the anchor member drilled in the required repair surface of the existing water channel, and there is a gap between the repair surface of the existing water channel and the panel. In this state, the step is fixed by tightening nuts from both sides.

Further, since the panel has a thickness of 20 mm or more and 70 mm or less and a weight of 50 kg or less, the panel can be manually constructed without using a large heavy machine or the like.

The invention according to claim 2 of the present invention is characterized in that the bolt insertion hole has a step portion formed by a washer having a polygonal, circular, or oval through hole integrally embedded in the panel. Item 1. An existing waterway repair panel according to Item 1.

In the present invention, since the step portion is formed by the washer, even if the panel is thin, the fixing bolt and nut can be completely embedded in the panel after the fixing and tightening, and the water channel after the repair is completed The inner surface can be kept flush, and the panel can be prevented from peeling off without being complicated, and can be manufactured easily and inexpensively in terms of manufacturing.

The invention according to claim 3 of the present invention is the existing water channel repair panel according to claim 1 or 2 , characterized in that the cross section is substantially L-shaped with a haunch portion.

Since the present invention has a substantially L-shaped cross section with a hunch portion, similar to the haunch of the existing water channel, it can be repaired in a shape substantially the same as the repair surface of the inner surface of the existing water channel, and the repair surface and the repair surface of the existing water channel The gap formed between the panels can be minimized.

The invention according to claim 4 of the present invention is the existing water channel repair panel according to claims 1 to 3 , wherein a reinforcing bar or a wire rod protrudes from the back surface portion.

In the present invention, a reinforcing bar or a linear member that is continuously and integrally attached from the inside protrudes on the rear surface of the existing water channel repair panel, such as a mortar that fills a gap between the panel and the water channel repair surface. The water channel repair panel, which is more firmly integrated with the filler and molded from the wear-resistant material, is less likely to peel off over time.

In the invention according to claim 5 of the present invention, the wear-resistant material is made of resin concrete, high-strength concrete, reinforced concrete using rust-proof reinforcing steel, or reinforced concrete reinforced with a rust-resistant material such as stainless steel. and wherein a existing canal repair panel of claims 1 4, wherein.

In the present invention, by selecting resin concrete or high-strength concrete (including so-called ultra-high-strength concrete) as an abrasion-resistant material , a thin-walled structure can be obtained, and a rust-proof treatment is applied. In the case of reinforced concrete using reinforced concrete, or reinforced concrete reinforced with rust-resistant materials such as stainless steel, reinforcing bars are inserted inside the reinforced concrete to make it a thin-walled structure. Use rust-proof bars and reinforcing bars. Thereby, since it is excellent in abrasion resistance, mechanical strength is large, and it is thin-walled, it is lightweight and easy to handle, workability is improved, and shortening of the construction period can be expected.

In the invention according to claim 6 of the present invention, an anchor (hole-in anchor or chemical anchor) is drilled at a predetermined position of an existing water channel, and a part of the anchor is selected when there is little erosion of concrete due to deterioration. The repair panel is fixed to the anchor with bolts with a spacer having a gap of 50 mm or less between the inner surface of the existing water channel and the repair panel, and the gap is filled. This is a method for repairing an existing water channel characterized by filling and solidifying a material.

In the present invention, an anchor member such as a hole-in anchor is driven into a predetermined position of an existing water channel, and the anchor is screwed with a bolt inserted through a bolt insertion hole of a repair panel, and has a gap of 50 mm or less through a spacer. The gap is filled with a filler such as mortar and solidified in the gap, thereby repairing the existing channel for repairing the existing channel, and the repair panel has the same height as the upper end surface of the existing channel. On the other hand, a part of the anchor that is installed at a position lower than the upper end surface and is driven into the existing water channel is driven into a portion of the repair-requiring surface that is less eroded and deteriorated.

The present invention is configured as described above, and the following effects are obtained.

It has a plurality of bolt insertion holes with stepped parts, and is molded with a thickness of 20 mm to 70 mm and a weight of 50 kg or less, so it is possible to work with little labor and use large machines such as heavy machinery. It can be installed without any trouble, and it is easy to maintain the gap at the predetermined position on the inner surface of the water channel by preventing the breakage of the bolt insertion hole by forming the step part with a washer etc. despite the thin-wall molding with high strength material Positioning can be performed, the construction period can be shortened, and repair costs can be minimized.

It is devised not to expose the bolt in consideration of bolt corrosion and running water after the repair is completed.

In order to conceal a bolt or the like inside the panel, it is common to provide a step in the bolt insertion hole and fix it with a nut, but in the present invention, the step is made of metal. It was formed by a washer and a hole drilled in the panel.

As a result, even with a thin-walled structure, fixing with bolts, etc. will be strong, there is no worry of cracking, and furthermore, the head part of the bolt can be mortared etc. because it can be thinned with a washer embedded in the panel It became easy to eliminate the protruding part inside the water channel by filling with.

By making the existing waterway repair panel approximately L-shaped and forming a haunch part, it is possible to keep the smallest gap with the inner surface of the existing waterway, and before repairing without reducing the internal air cross section as much as possible It is possible to secure a cross-section close to the inner air cross-section and to suppress a decrease in the flow rate very little.

By projecting a reinforcing bar or wire material on the back of the existing water channel repair panel, the gap between the panel and the required repair surface of the existing water channel is maintained at a certain level or more, and the filler filled in the gap Strong integration is achieved, the panel can be prevented from being peeled off due to aging after repair, and the life of the water channel can be further extended.

The existing waterway repair panel is made of a wear-resistant material made of resin concrete, high-strength concrete, reinforced concrete using rust-proof reinforcing steel, or reinforced concrete reinforced with rust-resistant materials such as stainless steel. It has the effect of preventing wear due to flowing earth and sand, preventing deterioration and destruction of waterways, and preventing the generation of bad odor due to suspended matter.

Cross section of existing waterway Explanatory drawing when installing repair panel in existing waterway Explanatory drawing when installing repair panel in existing waterway Shape of repair panel Explanatory drawing showing another embodiment

Hereinafter, the present invention will be described based on the illustrated embodiment. This embodiment is applied to a repair panel for repairing an existing concrete structure and its repair method, and the existing water channel S is an agricultural water channel using a concrete secondary product produced in the factory, The channel consists of left and right side plates 2, 2 'and bottom plate 3, and there are multiple repair points A on the inner side surface 4 and inner bottom surface 5 of the channel. Panel 1 is used. Here, a water channel repair panel made of resin concrete will be described as an example, but the same applies to other wear-resistant materials such as high-strength concrete.

There are a lot of repair points A that need to be deteriorated over many years on the inner side surface 4 and the inner bottom surface 5 of the existing water channel S. In order to repair these, the repair surfaces 4 'of the left and right side plates 2, 2' are required. For example, a water channel repair panel 1 having a height that is almost the same as the upper end surface 20 of the water channel side wall and a width of 50 cm is brought into contact with the water channel repair panel 1 and molded to the panel 1 of the repair surface 4 ′ that needs to be repaired. A hole-in anchor 7 is driven into a location corresponding to the bolt insertion hole 6 made.

The panel 1 is positioned by inserting bolts 8 through the plurality of bolt insertion holes 6 of the panel 1 and screwing into the hole-in anchors 7 on the water channel inner side surface 4 or the inner bottom surface 5. As shown in FIG. 3, the bolts are secured in a state where a gap K is secured between the panel 1 and the repair surface 4 ′ through a cylindrical spacer 9 having a length of about 50 mm that is set in advance on the bolts 8. A nut 11 is fastened to the step portion 10 of the insertion hole 6 to fix the repair panel.

The other bolt insertion holes are similarly tightened, and the panel is fixed to each repair surface of the water channel.

The spacer 9 does not necessarily have to be 50 mm depending on the degree of erosion of the repair required area A of the repair required surface 4 ′, and it is sufficient if a space that can be filled with the filler J can be secured. The distance from A 'to the inner surface B of the panel (the surface on the side where the water channel needs repairing) may be maintained at a constant interval.

The water channel repair panel 1 has a plurality of bolt insertion holes 6, and the number of the bolt insertion holes 6 is selectively determined according to the material and size of the panel 1, the state of deterioration of the repair required surface, and the like .

For example, if it can be manufactured as thin as ultra-high strength concrete and has excellent strength, it is less likely to bend after being tightened with its bolts and nuts, or to bend and deform due to the weight of the filler filling the gap Therefore, the bolt insertion holes 6 may be about four in the vicinity of four corners per square meter. However, in the case of a repair panel made of an arbitrarily selected wear resistant material such as resin concrete, deformation due to heat is expected. If four places are not enough, it is possible to increase one place near the center, in addition to the four corners, or about six places per square meter.

As shown in FIGS. 3 and 4, the bolt insertion hole 6 has a washer 13 embedded in and fixed to the panel 1 and having a through hole 12 larger than the diameter of the bolt. One side of the through hole 12 has a taper 14 that is centered with the through hole 12 and gradually narrows from the outside. The taper is drilled up to the washer, and the narrowest part is more than the through hole 12 of the washer 13. The step portion 10 having a width (diameter) sufficient to allow the nut to be screwed without hindrance is formed.

An anchor 15 embedded in the resin concrete panel is integrated with the washer 13 by welding or the like to prevent the washer itself from being peeled off, and thus to prevent the repair panel 1 from being peeled off after construction. Can do.

The panel 1 is attached to the plurality of anchors 7 driven into the repair required surface 4 ′ of the existing water channel S by securing the gaps K with bolts and nuts via the spacers 9.

The panel is attached to the left and right inner side surfaces 4 and the bottom surface 5 of the existing water channel S having the repair point A. The method for attaching the panel 1 to the bottom surface 5 is the same as the method for attaching the panel 1 to the side surface 4. Although the anchor 7 is not used, the height K is simply adjusted by the bolt 8 'to secure the gap K, and then the filler K is filled and solidified in the gap K and integrated with the side filler. Let

In addition to the above-described bolt insertion holes, the bolt insertion holes can be fixed to the panel with cap nuts, hexagon bolts, or the like embedded with nuts that are the same as the panel thickness or smaller than the panel thickness.

In addition, as shown in FIG. 5, the panel 1 'is formed with a haunch 16 and is substantially L-shaped similar to the inner surface of the existing water channel, so that it can be installed closer to the repair surface 4'. In addition, it is possible to suppress a decrease in the internal cross section due to the repair, and to obtain a large internal cross section after the repair.

In this case, by positioning the end portion 17 of the horizontal portion of the L-shaped water channel repair panel 1 ′ in a tapered shape or a stepped shape, the repair panel 1 b disposed on the bottom plate can be easily positioned, such as a bolt. Positioning work such as height adjustment due to can be simplified.

The panel installed at the bottom may be provided with a through hole (not shown) for confirming the filling state of the filler or for filling the filler.

In order to form a gap K between the inner side surface 4 or the inner bottom surface 5 having the repair point A of the existing water channel S, a steel material and a wire such as a reinforcing bar or a reinforcing bar (not shown) protrude from the back surface of the water channel repair panel. Alternatively, the convex portion can be formed of the same material as that of the panel.

The panel for repairing the water channel does not necessarily have to be the same height as the upper end surface 20 of the existing water channel, and it is sufficient if the size is sufficient to cover the lower part of the inner side surface 4 and the inner bottom surface 5 where the repair points A need to be concentrated. .

1 Repair panel

2 side version

3 Bottom plate

4 Inside side

4 'repair required surface

5 Inside bottom

6 Bolt insertion hole

7 Anchor

8 volts

9 Cylindrical spacer

10 steps

11 Nut

12 Through hole

13 Washer

14 Taper

15 Anchor

16 Haunch

17 End of repair panel of approximately L shape

20 Top surface

A repair point required

S Existing waterway

K gap

J Filler

Claims (7)

Clearance is 1mm to 50mm with respect to the diameter of the bolt to be attached to the repaired surface where the concrete has deteriorated, such as the inner side and bottom of the existing water channel, and there are multiple tapered bolt insertion holes with stepped parts An existing water channel repair panel, characterized in that it is formed of a wear resistant material with a thickness of 20 mm to 70 mm and a weight of 50 kg or less. 2. The existing water channel repair panel according to claim 1, wherein the bolt insertion hole has a step portion formed by a washer having a polygonal, circular or oval through hole integrally embedded in the panel. A plurality of nuts through which the bolts for attaching the molded panel to the repair surface of the existing water channel are integrally embedded with wear-resistant material, and molded with a wear-resistant material with a thickness of 20 mm to 70 mm and a weight of 50 kg or less. An existing water channel repair panel, characterized by The existing water channel repair panel according to claim 1, wherein the cross section is substantially L-shaped with a haunch portion. 5. A panel for repairing a water channel according to claim 1, wherein a reinforcing bar or a wire rod protrudes from the back surface portion. 6. The wear-resistant material is made of resin concrete, high-strength concrete, reinforced concrete using a reinforced anti-corrosion reinforcing steel, or reinforced concrete reinforced with a rust-resistant material such as stainless steel. Panel for repairing existing waterways. An anchor is drilled at a predetermined position of the existing water channel, and the repair panel is bolted to the anchor with a gap of 50 mm or less through a spacer between the inner surface of the existing water channel and the repair panel. A method for repairing an existing water channel, characterized by fixing and filling the gap with a filler.

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