Curing sheet extension and retention structure

Abstract

To provide a curing sheet extension holding structure in which an extension holding work of a curing sheet can be easily done without requiring large labor and which can give sufficient durability to an extended state of an once installed curing sheet.SOLUTION: In a curing sheet extension holding structure which holds a state where a curing sheet 2 is extended on a face to be cured (a sloped face 1) requiring sheet curing, a metal single pipe 3 is mounted on the curing sheet 2 laid on the face to be cured in a substantially horizontal direction, a part (ropes 4a) of a plurality of ropes 4 inserted through the single pipe 3 are stretched to an upper edge side of the curing sheet 2, and the remaining (ropes 4b) of the plurality of ropes are stretched to a lower edge side of the curing sheet 2, to fix a laying position of the single pipe 3.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a curing sheet extension and retention structure that maintains the tension of a curing sheet used for sheet curing of collapsed slopes, etc., and relates to a curing sheet extension and retention structure that can easily perform the extension and retention work and can obtain a durable extended state. [Background technology]

[0002] When a slope collapses due to heavy rain or the like, it is necessary to carry out emergency restoration work to prevent the collapse from progressing until the slope can be fully restored. For this reason, conventionally, a protective sheet (blue sheet) is laid on the collapsed slope, and in order to maintain the sheet in a spread state (to prevent it from scattering), a required number of sandbags 10 are placed at intervals on the spread protective sheet 2, as shown in Fig. 6 (see Non-Patent Document 1). This sandbag 10 is tied to one end of a rope 4 and hung from the upper edge of the curing sheet 2. The length of the rope is adjusted so that the sandbag is placed at an appropriate distance from the curing sheet 2, and the other end of the rope 4 is tied to a tree growing along the upper edge of the curing sheet 2 or to a stake 5 driven into the slope, thereby fixing the placement position. [Prior art documents] [Non-patent literature]

[0003] [Non-Patent Document 1] https: / / blog-imgs-71-origin.fc2.com / h / a / y / hayaken1st / 20150625073515f94.jpg Summary of the Invention [Problem to be solved by the invention]

[0004] However, sandbags are often made on-site, and depending on the site, there may be cases where the soil to put in the sandbags cannot be secured. Even if the soil can be secured, making the sandbags requires a lot of labor and time, which places a heavy burden on workers, especially under the hot sun or in bad weather, and hinders emergency recovery work using sheet curing.

[0005] Furthermore, if sandbags are left for long periods of time, they will deteriorate due to ultraviolet rays, and the bags themselves will rot, causing the protective sheet to become insufficiently held down, resulting in the inconvenience of the sandbags and protective sheet falling off or the protective sheet being blown up by the wind, causing the sheet protective covering on the slope to no longer function. For this reason, there is a demand for a durable tension retention structure that reduces the labor required to maintain the tension of the curing sheet and can maintain the tension of the curing sheet even when left unused for long periods of time.

[0006] The present invention has been made in consideration of the above circumstances, and its main objective is to provide a curing sheet tensioning and retention structure that allows the curing sheet to be easily tensioned and retained without requiring significant effort, and that can ensure sufficient durability in the tensioned state of the curing sheet once installed. [Means for solving the problem]

[0007] In order to achieve the above object, the curing sheet extension and retention structure according to the present invention is for maintaining a state in which a curing sheet is extended over a curing surface that requires sheet curing, A metal single pipe is placed in a substantially horizontal direction on the curing sheet laid on the surface to be cured, A portion of the multiple ropes passed through the single pipe are stretched across the upper edge side of the protective sheet, and the remainder of the multiple ropes are stretched across the lower edge side of the protective sheet to fix the position of the single pipe.

[0008] Therefore, since the curing sheet is pressed down on the surface to be cured by the metal pipe and the rope passed through this pipe, there is no need to carry out advance preparations such as making sandbags on-site, which reduces the labor required and enables emergency restoration regardless of the site conditions or weather. Also, since metal pipes are used, it is possible to obtain a durable extension and retention structure that is not damaged by ultraviolet rays, etc., compared to the case where sandbags are used.

[0009] Here, some of the multiple ropes are stretched so that both ends pass over the upper edge of the protective sheet with a gap greater than the length of the single-tube pipe, and the remaining multiple ropes are stretched so that both ends pass over the lower edge of the protective sheet with a gap greater than the length of the single-tube pipe.

[0010] By doing this, it is possible to secure a large area over which the protective sheet can be pressed down using the single pipe and rope, making it possible to press down a wide area of ​​the protective sheet using fewer materials.

[0011] Depending on the size of the surface to be covered with the curing sheet, multiple single pipes may be installed with spacing between them in the vertical direction of the curing sheet, or multiple single pipes may be installed with spacing between them in the horizontal direction of the curing sheet.

[0012] In addition, as another form of the curing sheet extension and retention structure that maintains the state in which the curing sheet is extended over the surface to be cured that requires sheet curing, A connecting body in which a plurality of metal single pipes are connected in a ladder shape by ropes is placed on top of the curing sheet laid on the surface to be cured so that the plurality of single pipes are arranged in a vertical direction; The position of the connector may be fixed by stretching a rope through the single pipe at the top of the connector to the upper edge of the protective sheet, and stretching a rope through the single pipe at the bottom of the connector to the lower edge of the protective sheet.

[0013] With this configuration, the protective sheet can be held down over a wide area by the connector, while the rope stretched around the upper and lower edges of the protective sheet from the connector can further hold down the protective sheet over a wide area, allowing for more reliable sheet curing and making it possible to apply sheet curing to not only collapsed slopes but also to surfaces such as collapsed roofs.

[0014] Instead of passing the rope through the single pipe, the rope may be fastened to a rope fastener provided on the single pipe. If a rope is passed through a single pipe, a rope fastener is not necessary, but a long rope is required. In contrast, if the rope is fixed to a rope fastener provided on the single pipe, the length of each rope can be shortened, making it easier to stretch the rope. Effect of the Invention

[0015] As described above, according to the present invention, a metal single-tube pipe is placed in an approximately horizontal direction on top of a curing sheet laid on the surface to be cured, and some of the multiple ropes passed through the single-tube pipe (or some of the multiple ropes fastened to a rope fastener provided on the single-tube pipe) are stretched over the upper edge of the curing sheet, while the remainder of the multiple ropes are stretched over the lower edge of the curing sheet to fix the position of the single-tube pipe.Therefore, sheet curing is completed simply by fixing the single-tube pipe to the curing sheet with the ropes, so there is no need to carry out advance preparations on site such as creating sandbags, as in the conventional method, which makes it possible to significantly reduce the amount of work effort and also makes it possible to quickly carry out emergency recovery work using sheet curing regardless of the conditions on site or the weather.

[0016] In addition, since a single pipe is used instead of conventional sandbags, the single pipe itself will not decay even if it is exposed to ultraviolet rays for a long time, the tensioned state of the protective sheet can be maintained for a long period of time, and maintenance is also unnecessary. Furthermore, the materials used for the expansion are easily available single-tube pipes, so there is no need to procure special materials, which is also advantageous in terms of cost. [Brief description of the drawings]

[0017] [Figure 1] FIG. 1 is a diagram showing a first configuration example of a curing sheet extension and retention structure according to the present invention, showing the state in which each curing sheet is cured using a single tube and a rope, where (a) is an oblique view and (b) is a front view. [Diagram 2] FIG. 2 is a diagram showing a second configuration example of the curing sheet extension and retention structure of the present invention, in which multiple single-tube pipes are aligned and arranged in the vertical direction for each curing sheet, and ropes are stretched to fix the state, (a) being an oblique view and (b) being a front view. [Diagram 3] FIG. 3 is a diagram showing a third configuration example of the curing sheet extension and retention structure of the present invention, in which multiple single-tube pipes are aligned in the vertical and horizontal directions for each curing sheet, and ropes are stretched to fix the state, where (a) is an oblique view and (b) is a front view. [Figure 4] FIG. 4 is a diagram showing a fourth configuration example of the curing sheet extension and retention structure of the present invention, in which a connecting body made of multiple single pipes connected in a ladder shape by ropes is placed on top of each curing sheet, and the ropes are stretched to fix the state, (a) being an oblique view and (b) being a front view. [Diagram 5] Figure 5 shows a single-tube pipe and a rope fastener to be attached thereto, where (a) is an oblique view showing the state before the rope fastener is attached to the single-tube pipe, and (b) is a cross-sectional view from the axial direction showing the state after the rope fastener is attached to the single-tube pipe. [Figure 6] FIG. 6 is a diagram showing a conventional extension and retention structure of a curing sheet, in which (a) is a perspective view and (b) is a front view showing the state in which the sheet is cured using sandbags. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0018] Hereinafter, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 shows a first configuration example of a curing sheet extension and retention structure according to the present invention, which uses a sheet for emergency restoration of a collapsed slope 1.

[0019] The collapsed slope 1 is covered almost entirely with a protective sheet 2 (for example, a so-called blue sheet made of synthetic resin such as polyethylene), and in order to maintain the tension of this protective sheet 2, a tension retention structure, described below, is formed using single pipes 3 and ropes 4. Depending on the size of the slope, multiple protective sheets are laid (in this example, two protective sheets are laid side by side with some overlapping).

[0020] In this tension retention structure, a single pipe 3 is placed in the middle of each curing sheet 2 so that it extends in a generally horizontal direction, and to maintain this state, for example, two ropes 4a, 4b are passed through the single pipe 3, and both ends of one of the ropes 4a are extended upward with the single pipe 3 positioned approximately in the center, and each end is stretched over the upper edge of the curing sheet 2 (passing the upper edge) with a gap wider than the length of the single pipe 3. Then, while fine-tuning the position of the single pipe 3 (while adjusting the length of the rope 4a stretched from the single pipe 3), each end of the rope 4a is tied to a naturally growing tree along the upper edge of the curing sheet or to a stake 5 driven into the slope.

[0021] The other rope 4b, which has been passed through the single pipe 3, is extended downward at both ends with the single pipe 3 positioned approximately in the center, and each end is stretched over the lower edge of the protective sheet 2 (passing the lower edge) with a gap wider than the length of the single pipe 3. The ends of each rope 4b are then tied to naturally growing trees or stakes 5 driven into the slope along the lower edge of the protective sheet.

[0022] Therefore, by tensioning one of the two ropes 4a, 4b that are inserted through the single pipe 3 upward and the other downward, the middle of the protective sheet 2 is pressed against the slope, and the sheet is fixed in place without shifting out of position.

[0023] In this example, the single pipes 3 are arranged for each curing sheet 2, but they may be arranged to straddle multiple curing sheets 2, and it is preferable to use metal pipes with a certain amount of weight to hold down the curing sheets 2, for example, steel pipes with a diameter of about 5 cm and a length of 1.5 m to 2.0 m per piece. The ropes 4 are preferably made of ultraviolet resistant material such as a Cremona rope, and the diameter of the rope is preferably about 1 cm to facilitate the work of passing the rope through the single pipes 3, tensioning the rope through the single pipes 3, and tying it to trees, stakes, etc.

[0024] Then, by arranging multiple such single pipes 3 at intervals in the horizontal direction according to the laying length and number of sheets of protective sheet 2, almost the entire protective sheet 2 is pressed down from above by the single pipes 3 and the ropes 4 passing through them.

[0025] Therefore, the curing sheet 2 used to cure the slope 1 is pressed down against the surface to be cured by a metal single-tube pipe 3 and a rope 4 passed through this single-tube pipe 3, eliminating the need for advance preparations on site such as creating sandbags, and making it possible to significantly reduce work effort. Furthermore, when using sandbags, there may be cases where it is not possible to secure soil to put in the sandbags depending on the site, but when using the single pipe 3, such site conditions do not apply, and even in bad weather, no prior preparation is required, making it possible to quickly carry out emergency restoration work using curing sheets. Furthermore, since a single pipe 3 is used, it is not subject to damage from ultraviolet rays or the like, as is the case with sandbags, and it is possible to obtain a durable extension and retention structure.

[0026] Furthermore, some of the multiple ropes are strung across the upper edge of the protective sheet with both ends spaced apart by a distance greater than the length of the single-tube pipe, and the remaining multiple ropes are strung across the lower edge of the protective sheet with both ends spaced apart by a distance greater than the length of the single-tube pipe.This makes it possible to secure a large range (area) for pressing down the protective sheet using the single-tube pipe and ropes, and enables a wide area of ​​the protective sheet to be pressed down using fewer materials.

[0027] In the above configuration, one single pipe 3 is placed horizontally in the middle of the curing sheet, and a rope 4 is passed through it and stretched up and down to maintain the curing sheet 2 in an expanded state. However, if the slope 1 to be cured is wide from top to bottom, multiple single pipes 3 can be placed vertically at a predetermined interval (for example, three pipes are placed vertically), as shown in Figure 2, and two ropes 4a, 4b can be passed through each single pipe 3, with one rope stretched over the upper edge of the curing sheet 2 (with both ends spaced apart wider than the length of the single pipe 3 and stretched over the upper edge of the curing sheet 2) and the other rope stretched over the lower edge of the curing sheet 2 (with both ends spaced apart wider than the length of the single pipe 3 and stretched over the lower edge of the curing sheet 2) (second configuration example).

[0028] Furthermore, when the slope 1 to be covered with the sheet is long horizontally and it is necessary to keep the covering sheet firmly stretched, as shown in Figure 3, multiple short single-tube pipes 3 can be installed horizontally (in the example of Figure 3, multiple are also installed vertically), and two ropes 4a, 4b can be passed through each single-tube pipe, with one of each rope stretched over the upper edge of the covering sheet 2 (with both ends stretched over the upper edge of the covering sheet 2 with a gap wider than the length of the single-tube pipe 3) and the other rope stretched over the lower edge of the covering sheet 2 (with both ends stretched over the lower edge of the covering sheet 2 with a gap wider than the length of the single-tube pipe 3), and the multiple ropes 4 arranged in a mesh pattern can be used to firmly hold down the covering sheet 2 (third configuration example).

[0029] In such a configuration, ropes are stretched vertically at short horizontal intervals to hold down the protective sheet 2 (in the configuration of Figure 5, the protective sheet 2 is held down between adjacent single-tube pipes 3 by multiple ropes 4 stretched in a mesh pattern), making it possible to form a strong extended and retaining structure for the protective sheet 2.

[0030] Yet another configuration example is shown in Figure 4. In this example, a connecting body 6 is prepared in advance by connecting multiple metal single pipes 3 in a ladder shape with ropes 4c, and this connecting body 6 is placed on top of a curing sheet 2 laid on the surface to be cured so that the multiple single pipes 3 are approximately horizontal and arranged at a predetermined interval in the vertical direction. There are various ways to make the connecting body 6, but for example, rope fasteners 7 may be attached to both ends of each single pipe 3, and vertically adjacent single pipes 3 may be connected by tying ropes to the rope fasteners facing each other vertically.

[0031] The rope fastener 7 may be, for example, as shown in Figure 5, composed of a sleeve ring 7a having an inner diameter somewhat larger than the outer diameter of the single-tube pipe 3, and eye bolts 7b provided at two locations around the sleeve ring 7a. The eye bolts 7b are screwed into the sleeve ring 7a so that their tips protrude inward, and the eye bolts 7b are tightened to fix the rope fastener 7 to the single-tube pipe 3, and the rope 4 can be tied to the eye bolts 7b.

[0032] After placing such a connector 6 on the protective sheet, the rope 4a passed through the topmost single pipe 3a of the connector 6 is stretched over the upper edge of the protective sheet 2 (with both ends spaced apart by a distance wider than the length of the single pipe 3 and stretched over the upper edge of the protective sheet 2), and the rope 4b passed through the bottommost single pipe 3b of the connector 6 is stretched over the lower edge of the protective sheet 2 (with both ends spaced apart by a distance wider than the length of the single pipe 3 and stretched over the lower edge of the protective sheet 2), thereby fixing the connector 6 onto the protective sheet 2.

[0033] In such a configuration, there is no need to pass two ropes through each single pipe 3 to secure each single pipe 3, as in Figures 1 to 3, and it is possible to fix multiple single pipes 3 onto the protective sheet 2 at once, which further reduces the work effort.In addition, since the single pipes 3 can be arranged at predetermined intervals, it is possible to more reliably maintain the tension of the protective sheet.

[0034] Furthermore, the use of such connectors 6 can be used not only for collapsed slopes 1, but also for emergency restoration of collapsed roofs of houses with protective sheets 2. In particular, when protecting the entire surface of a roof, emergency restoration is facilitated by using an even number of single pipes 3, four or more, and allowing the same number of single pipes to be installed on both sides of the ridge of the roof.

[0035] In the above, an example was shown in which two ropes were passed through the single pipe, but three or more ropes may be passed through depending on the diameter of the single pipe, with some of the ropes stretched across the upper edge of the protective sheet and the remaining ropes stretched across the lower edge of the protective sheet. The more ropes there are, the more securely the protective sheet 2 can be maintained in a stretched state.

[0036] In the above configuration, the rope 4 is passed through the single-tube pipe 3, but the above-mentioned rope fasteners 7 can be attached to both ends of the single-tube pipe 3, the rope 4 can be tied to the rope fasteners 7, and the rope 4 can be stretched across the upper and lower edge sides of the protective sheet 2.

[0037] In such a configuration, it is possible to shorten the length of each rope 4 compared to when the rope 4 is passed through a single-tube pipe 3 (since a rope 4 of about half the length is required compared to when the rope 4 is passed through a single-tube pipe 3), making it easier to string the rope 4. [Explanation of symbols]

[0038] 1 Slope (cured surface) 2. Protective sheet 3 Single Pipe 4,4a,4b Rope 5 Trees or posts 6 Connector 7 Rope fastener

Claims

1. A curing sheet extension and retention structure that maintains a state in which a curing surface that requires sheet curing is extended with a curing sheet, A metal single pipe is placed in a substantially horizontal direction on the curing sheet laid on the surface to be cured, A protective sheet tensioning and retention structure, characterized in that some of the multiple ropes passed through the single pipe are stretched across the upper edge side of the protective sheet, and the remainder of the multiple ropes are stretched across the lower edge side of the protective sheet to fix the position of the single pipe.

2. A portion of the plurality of ropes is stretched so that both ends thereof pass over the upper edge of the curing sheet with an interval greater than the length of the single pipe, The remainder of the multiple ropes are stretched so that both ends pass over the lower edge of the curing sheet with an interval greater than the length of the single pipe.

2. The curing sheet extension and retention structure according to claim 1.

3. 3. The curing sheet extension and retention structure according to claim 1, wherein a plurality of the single pipes are disposed at intervals in the vertical direction of the curing sheet.

4. The curing sheet extension and retention structure according to any one of claims 1 to 3, characterized in that a plurality of the single pipes are provided at intervals in the horizontal direction of the curing sheet.

5. A curing sheet extension and retention structure that maintains a state in which a curing surface that requires sheet curing is extended with a curing sheet, A connecting body in which a plurality of metal single pipes are connected in a ladder shape by ropes is placed on the curing sheet laid on the surface to be cured so that the plurality of single pipes are arranged in a vertical direction; A curing sheet extension and retention structure characterized in that a rope passed through the single pipe at the top of the connecting body is stretched across the upper edge of the curing sheet, and a rope passed through the single pipe at the bottom of the connecting body is stretched across the lower edge of the curing sheet, thereby fixing the placement position of the connecting body.

6. A protective sheet extension and retention structure as described in any one of claims 1 to 5, characterized in that the rope is fastened to a rope fastener provided on the single pipe instead of being passed through the single pipe.

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