JPH09119197A - Regenerated valley gutter construction and method thereof - Google Patents

Abstract

PROBLEM TO BE SOLVED: To smooth the inside bottom face of a new valley gutter with fixed water gradient so as to smoothly drain rain water by laying a soft vinylcloride resin sheet on the inside of an old valley gutter, and arranging a new valley gutter on the soft sheet. SOLUTION: A soft vinylcloride resin sheet 8 is laid on the surface inside an old valley gutter 2, and a hole of falling port is opened on the position corresponding to the drain of the sheet 8. Meanwhile, the mutual end parts of new valley gutters 7, 7 are overlapped, and the inner and outer circumferential faces of the overlapped part are pinchedly held with reinforcing plates 9a, 9b so as to be along them. Next, the adjoining new valley gutters 7 are fixedly secured and connected together by tapping screws 10, 10, and new valley gutters 7 are in order connected together. The new valley gutter 7 is arranged on the soft sheet 8, and even if projecting and recessed parts are on the inner face of the old valley gutter 2, the new valley gutter 7 is finely executed to be finished, and according to the arranged length of the old valley gutter 2, the new valley gutters 7 are in order connected together into a fixed length, and executed to be arranged.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rehabilitated trough structure in which aged troughs placed in a valley between roofs of a large structure such as a factory or a warehouse are rehabilitated (or reformed). It relates to the rehabilitation method of Tanihi.

[0002]

2. Description of the Related Art A conventional valley gutter is, for example, Shoukai 56-2.
As described in Japanese Patent No. 2227, the roof is attached to a portion where the roof is connected in a valley shape, and the rainwater flowing down from the roofs on both sides is drained. When the roof gutters installed between the roofs are deteriorated and the rainwater drainage is obstructed, the old gutters that have deteriorated are replaced with new troughs to be rehabilitated (or reformed). There is a need to.

Conventionally, as a method of rehabilitating (or reforming) this trough, a method of completely removing the old trough and replacing it with a new trough, or leaving the old trough as it is, The method of arranging the new trough as it is is adopted.

[0004]

However, the method of removing an old trough and replacing it with a new trough requires the work of removing and removing the old trough and requires a lot of man-hours. In the method, there is a problem that the construction cost is higher than that in the case of new construction.

On the other hand, the rehabilitation method of arranging a new trough in the old trough is certainly advantageous because it is not necessary to remove and remove the old trough, and the removal cost is lower than the above replacement method. However, in this method, since dust and the like are accumulated on the inner surface of the old trough and many irregularities exist, if a new trough is directly installed on the old trough, the new trough The bottom surface becomes uneven and the prescribed water gradient cannot be obtained.

For this reason, after the rehabilitation method is applied, it is difficult to obtain smooth rainwater drainage, and moreover, rainwater and dust are accumulated on these irregularities, so that this area is easily damaged.
There was a problem that durability was lowered. In order to eliminate the large number of irregularities, some kind of undercoating is required, and if this undercoating is performed, it will be separately expensive and the construction period required for rehabilitation will be extended.

An object of the present invention is to provide a new trough in an old trough so that the inner bottom surface of the new trough is not uneven and is smooth, and a required predetermined water gradient is obtained. It is possible to provide a rehabilitation gutter structure that can maintain smooth drainage of rainwater without impairing it.

Another object of the present invention is to provide a method for rehabilitating a trough with excellent workability, in which a new trough can be arranged in an old trough without any ground treatment. Further, it is an object of the present invention to provide a rehabilitation trough structure and a trough rehabilitation method capable of imparting smooth expansion and contraction to a new trough arranged inside an old trough.

[0009]

According to the rehabilitation trough structure of the present invention, a soft sheet is laid inside an old trough, and a new trough is arranged on the soft sheet.

In the rehabilitation trough structure of the present invention, the connection between the new troughs is displaced from the connection between the old troughs by a predetermined distance in either the water side direction or the water side direction. It is recommended that a new trough be placed in the closed position. Although this interval depends on the length of the troughs to be arranged, it may be at least a length corresponding to the maximum thermal expansion and contraction amount of the new troughs, and normally, it may be shifted by about 200 mm or more.

The trough rehabilitation method of the present invention is a method of laying a soft sheet on the inside of an old trough and arranging a new trough on the soft sheet.

Also in the method of rehabilitating a trough according to the present invention, as in the case of the rehabilitation trough structure described above, when a new trough is arranged on the soft sheet, the connection between the new troughs is
It is advisable to dispose a new trough in a state in which the connection between the old troughs is shifted by a predetermined distance in either the water side direction or the water side direction. Although this interval depends on the length of the troughs to be arranged, it may be at least a length corresponding to the maximum thermal expansion and contraction amount of the new troughs, and is usually about 20.
It may be offset by 0 mm or more.

Further, in the method for rehabilitating a trough according to the present invention, overlapping end portions of adjacent new troughs are overlapped with each other to form a superposed portion, and the inner and outer surfaces of the trough are respectively formed above and below the superposed portion. A reinforcing plate of a predetermined width with a substantially equal cross-sectional shape is placed along the upper and lower reinforcing plates to sandwich the overlapping portion, and one reinforcing plate is penetrated to the other reinforcing plate to connect new troughs. Is good.

(Operation) In the invention described in claim 1, since the new trough is arranged on the soft sheet laid inside the old trough, the inner bottom surface of the new trough becomes smooth, and the predetermined value is obtained. The water gradient can be taken and the smooth drainage performance of rainwater can be maintained continuously.

According to the invention described in claim 2, in addition to the function of the invention described in claim 1, a new connecting portion between troughs is provided.
Since it is not located above the connection between the old troughs and is arranged with a predetermined gap in either the water side or the water side relative to the connection between the old troughs, It is possible to smoothly absorb the thermal expansion and contraction of the new trough due to the temperature difference.

In the invention according to claim 3, since a soft sheet is laid on the old trough and a new trough is placed on this sheet, a large number of irregularities existing on the inner surface of the old trough are
The inner bottom surface of the new trough, which was removed and placed by the soft sheet, was not affected by the unevenness at all, resulting in a beautiful finish without unevenness. That is, the lower side of the soft sheet laid on the old trough is deformed according to the unevenness, and the new trough arranged on this sheet is not uneven. That is,
The soft sheet existing between the old trough and the new trough serves as a cushioning material, and the unevenness of the old trough does not affect the new trough.

According to the invention described in claim 4, in addition to the function of the invention described in claim 3, the old valley gutter is so arranged that the connection between the new troughs is not located above the connection between the old troughs. Since they are arranged with a predetermined gap in either the water side direction or the water side direction with respect to the connection between them, the thermal expansion and contraction of the new trough due to the temperature difference is smoothly absorbed.

According to the invention of claim 5, in addition to the functions of the inventions of claims 3 and 4, reinforcing plates are provided above and below the overlapped portion formed by overlapping the ends of adjacent new troughs. In this way, the overlapping portions are sandwiched, and the fixtures are penetrated from one reinforcing plate to the other reinforcing plate to connect the new troughs, so that the connecting portions are firmly connected so that rainwater does not leak. Further, since the thickness increase of both the overlapping portion and the outer reinforcing plate is absorbed by the deformation of the soft sheet, this portion does not rise significantly. Therefore, rainwater flows smoothly over this connection.

[0019]

BEST MODE FOR CARRYING OUT THE INVENTION The material, shape, size and the like of the new trough used in the present invention are not particularly limited, and the point is to appropriately determine it depending on the structure to which the trough is applied. In addition to synthetic resin rain gutters used in ordinary houses, F
Examples thereof include those made of RP and those obtained by coating the surface of a metal plate with a synthetic resin material. For example, when the structure is large, such as in a warehouse or factory, it is difficult to apply the rain gutter made of hard vinyl chloride resin used for the above-mentioned general houses. It is preferable to use one made of a coated steel sheet coated with vinyl chloride resin or the like.

In the present invention, the connection method for connecting the above-mentioned new troughs is not limited, and the connection method adopted during normal construction may be used depending on the material and form of the troughs. . For example, when the trough is made of hard vinyl chloride resin, a joint made of the same resin may be used for connection.

When the trough is made of a coated steel sheet whose surface is coated with vinyl chloride resin, it is possible to connect it by using a commonly known connection method such as a seam joint and a lap joint. Good. At that time, a known sealing material may be used to improve the water tightness of the connection portion, and a rivet or the like may be used together to increase the connection strength.
In the case of the lap joint method, it is preferable to reinforce the connecting portion by rivet connection using a reinforcing plate together, as described later.

The soft sheet used in the present invention may be any flexible sheet,
Since the rainwater passes over the trough, there is a risk that the rainwater may leak from the joint between the troughs. Therefore, a water-impermeable, water-impermeable material is preferable. As such a soft sheet, for example, a soft vinyl chloride resin sheet, a synthetic resin sheet such as a polyethylene sheet, or a rubber sheet is preferable.
Further, a foamed sheet such as a polyethylene foam sheet or a rubber foam sheet may be used. Further, a waterproof sheet such as an asphalt roofing sheet which is generally used as a roofing material for roofing material can be used. And as thickness of such a soft sheet, it is 1 mm-5.
It may be about mm.

As the reinforcing plate used in the present invention,
It may be made of the same material as the above new trough or a different material. The shape of the reinforcing plate may correspond to the new shape of the trough. Further, the width of the reinforcing plate may be approximately equal to the overlapped portion where the ends of the new connecting troughs are overlapped. The thickness of the reinforcing plate may be about 1 mm to 3 mm. There are two types of reinforcing plates, one that contacts the inside of the overlapping portions of the new troughs and one that contacts the outside of the overlapping portions.The thickness of both reinforcing plates must be the same. Also,
Alternatively, both may be different.

For example, when changing the thickness of both reinforcing plates,
It is preferable that the one that is in contact with the inside is thin and the one that is contacted with the outside is thick. The reason for this is that if the one that contacts the inside is made thicker, the stepped portion (due to the reinforcing plate) existing on the inner surface side of the new trough becomes an obstacle to the flow of rainwater drained through the inside of the trough. Drainage characteristics may deteriorate, and if the one that contacts the outside is thinned,
This is because it is not possible to obtain a sufficient reinforcing effect on the connection strength of the trough connection.

In order to further reduce the flow resistance of such rainwater, it is preferable to chamfer the water side of the reinforcing plate abutting the inside. When the reinforcing plates have a certain thickness, it is preferable to provide a large number of vertically penetrating holes in both reinforcing plates at the same position in advance in order to facilitate the penetration of a jointing tool described later. In this case, for example, punching metal may be used.

Further, the fixing tool used in the present invention may be any as long as it can be fixed by penetrating the reinforcing plate and the trough, but tapping screws, rivets and the like are preferable.

[0027]

Next, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is an explanatory view showing the appearance of a factory A to which the present invention is applied, and FIG. 2 is a sectional view taken along line XX of FIG.

A valley B is formed along the boundary of both buildings. Specifically, as shown in FIG. 2, an old valley gutter 2 (total length of about 40 m) is provided along the longitudinal direction below the origami roofs 1 and 1 which are inclined downward from both sides toward the center and face each other. Is provided. This trough 2 is a so-called PVC vinyl steel sheet in which both surfaces and both end surfaces of the steel sheet are covered with vinyl chloride resin, and is bent into a gutter-shaped groove shape, and the width of the bottom portion 21 is about 500 mm. .

Reference numeral 3 denotes a metal receiving metal fitting, which receives and supports the trough 2 from below, and is installed in the longitudinal direction of the trough B at an interval of about 600 mm. Both ends of the receiving fitting 3 are fixed to the steel frame. Reference numeral 4 is a drain for draining rainwater to the vertical gutter 5, and a circular short cylinder body 41 having a flange portion on the outer side of the upper end is attached to the outlet 22 formed in the bottom 21 of the trough 2. A dust removing piece 42 is mounted inside the upper end of the short tubular body 41. A male screw (not shown) provided on the inner circumference of the lower end of the dust removing piece 42 is screwed and fixed to a female screw (not shown) provided on the inner circumference of the upper end of the short tubular body 41. Drain 4 is Tanihi 2
Are installed at four locations in the longitudinal direction at substantially equal intervals.
Two of them are installed at both ends of the trough 2.

On the inner and outer surfaces of the old trough 2, a large number of irregularities 6,
6 ... has occurred. Occasionally, the bottom of the valley gutter 2 may have considerably large irregularities. This may be done by an inspector walking in the trough when inspecting the trough,
This is what happens.

3 to 5 are explanatory views showing an embodiment of a rehabilitation gutter structure according to the present invention together with a rehabilitation method.
Is an explanatory view showing a state in which a soft sheet is mounted on an old trough, and FIG. 4 is a state in which a new trough adjacent to a new trough is connected and a new trough is arranged on the soft sheet. FIG. 5 is an explanatory view showing a state in which a trough is provided. FIG. 6 is a longitudinal sectional view of FIG.

Numerals 7 and 7 are new troughs, and the material thereof is the same vinyl chloride steel plate as the old trough 2. The cross-sectional shape of the new trough 7 is similar to the old trough 2, and its size is slightly smaller than that of the old trough 2. A soft vinyl chloride resin sheet 8 having a thickness of about 3 mm is interposed between the old trough 2 and the new trough 7.

The new troughs 7, 7 are overlapped at their ends by about 70 mm to form a superposed portion 7a. An inner reinforcing plate 9a is formed on the inner peripheral surface of the superposed portion 7a, and an outer reinforcing member is formed on the outer peripheral surface. The plates 9b are brought into contact with each other, and the new troughs 7, 7 are sandwiched between the reinforcing plates 9a, 9b by the tapping screws 10, 10 ... 71 is formed. Both the reinforcing plates 9a and 9b are made of the same material as the new trough 7 and have a thickness of about 2 mm. A silicone resin-based sealing material is applied to the overlapping surface of the overlapping portion 7a before the overlapping.

In the above-mentioned embodiment, as shown in FIG. 5, the new joint gutters 7 adjacent to each other and the joints 71 connecting the new troughs 7 to each other are located on the water side. They are displaced by about 250 mm.

Next, an embodiment of the method for rehabilitating a trough according to the present invention will be described with reference to FIGS.

First, as shown in FIG. 3, a soft vinyl chloride resin sheet 8 is laid on the inner surface of the old trough 2 along the longitudinal direction. At this time, the dust removing piece 42 of the drain 4 is removed in advance. After laying the resin sheet 8, a hole having a diameter substantially equal to the diameter of the drop port 22 is formed at a position of the sheet 8 corresponding to the drain 4. On the other hand, the new troughs 7, 7 are overlapped with each other to form overlapping portions 7a, and reinforcing plates 9 are formed on the inner and outer peripheral surfaces of the overlapping portions 7a, respectively.
a and 9b are arranged alongside each other, and the overlapping portion 7a is sandwiched between the reinforcing plates 9a and 9b. Next, tapping screws 10, 10, ... Are penetrated from the inner reinforcing plate 9a side to the outer reinforcing plate 9b side, and adjacent new troughs 7 are fixed and connected. By repeating the same connection work, new troughs 7 are sequentially connected to have a length approximately equal to the length of the troughs to which the troughs are attached.

Then, as shown in FIG. 4, a new trough 7
Are placed on the soft vinyl chloride resin sheet 8. At this time, as shown in FIG. 5, a new trough 7 and a connecting portion 7 between the new troughs 7 are connected to a connecting portion 21 between the adjacent old troughs 2 and 2.
1 is placed so that it is displaced by 250 mm above the water. Of course, according to this final arrangement, the outlet 22 of the old trough 2 is provided at the bottom of the new trough 7.
Pre-drill an outlet of approximately the same diameter as.

After arranging the new trough 7 on the soft vinyl chloride resin sheet 8 as described above, the lower part of the dust removing piece 42 which has been removed is used as a hole for the bottom of the new trough 7. The dust removing piece 42 is fixed by being inserted and screwed into the short tubular body 41 of the old trough 2. In this way, the rehabilitated trough structure shown in FIG. 7 is obtained.

In the old trough rehabilitation method, the old trough 2
Soft vinyl chloride resin sheet 8 is laid inside, and this sheet 8
This is a method of arranging a new trough 7 on the top, so the new trough 7 constructed by this method has a large number of irregularities 6, 6 ... Even on the inner surface of the old trough 2, The new trough 7 is not affected by the unevenness 6 and has no unevenness, so that the new trough 7 can be beautifully constructed and finished.

This is because the soft vinyl chloride resin sheet 8 laid in the old trough 2 is deformed according to the large number of irregularities 6 present on the inner surface of the old trough 2, and the new vinyl chloride resin sheet 8 disposed on the sheet 8 is deformed. This is because the trough 7 is not uneven. That is, the soft vinyl chloride resin sheet 8 interposed between the old trough 2 and the new trough 7 serves as a cushioning material, and the influence of the large number of irregularities 6 existing on the inner surface of the old trough 2 is reduced. This is because it absorbs and has the effect of the base treatment. Further, according to the arrangement length of the old trough 2, the new trough 7 can be sequentially connected and arranged so as to have a predetermined length.

In addition, the connecting portion 71 between the new troughs 7
Is sandwiched between the inner and outer peripheral surfaces by the reinforcing plates 9a and 9b and is fixed by the tapping screw 10, so that the connecting portion 71 is firmly connected so that rainwater does not leak. Further, since the increased thickness of the reinforcing plate 9b on the outer peripheral surface side is absorbed by the deformation of the soft vinyl chloride resin sheet 8 on the lower side, this portion does not rise upward, and rainwater smoothly flows through the new trough 7 And then drained.

[0042]

According to the first aspect of the invention, since the new trough is arranged on the soft sheet laid inside the old trough, the inner bottom surface of the new trough becomes smooth, and the predetermined value is obtained. The water gradient can be taken and the smooth drainage performance of rainwater can be maintained continuously. In addition, there is no need to replace the old trough, which reduces the construction cost.

In the invention according to claim 2,
The connection between the new troughs is not located above the connection between the old troughs, and the connection between the old troughs is
Since they are arranged with a predetermined gap in either the water side or the water side, in addition to the effect of the invention according to claim 1, the thermal expansion and contraction of the new trough due to the temperature difference is smoothly absorbed. can do.

According to the third aspect of the present invention, since a soft sheet is laid on the old trough, and a new trough is arranged on the sheet, the existing method exists on the inner surface of the old trough. The large number of irregularities formed are removed by the soft sheet, and the inner bottom surface of the newly placed trough is not affected by the irregularities at all, resulting in a beautiful finish without irregularities. That is, the lower side of the soft sheet laid on the old trough is deformed according to the unevenness, and the new trough placed on the sheet is not uneven.

In the invention according to claim 4,
To prevent the connection between the new troughs from being located above the connection between the old troughs, the connection between the old troughs should be offset by a predetermined distance in either the water side or water side direction. In addition to the effect of the invention described in claim 3, it is possible to smoothly absorb the thermal expansion and contraction of the new trough due to the temperature difference. Further, new troughs adjacent to the new trough can be connected and extended one after another, so that new troughs can be attached even if the place to attach the troughs is long.

Further, in the invention according to claim 5,
Reinforcement plates are placed above and below the overlapped portions formed by overlapping the ends of adjacent new troughs to sandwich the overlapped portions, and the fastener is penetrated from one reinforcement plate to the other reinforcement plate to create a new valley. Since it is a rehabilitation method that connects and arranges gutters,
In addition to the effects of the inventions of claims 3 and 4, the connection portion can be firmly connected so that rainwater does not leak.
In addition, since the increased thickness of both the overlapped portion and the outer reinforcing plate is absorbed by the deformation of the soft sheet, this portion does not rise significantly. Therefore, the rainwater smoothly flows over this connection portion, and the rainwater drainage can be favorably maintained.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram showing an appearance of a factory to which a rehabilitation trough structure and a trough rehabilitation method of the present invention are applied.

FIG. 2 is a cross-sectional view taken along line XX of FIG.

FIG. 3 is an explanatory view showing a state in which a soft sheet is attached on an old trough.

FIG. 4 is an explanatory diagram showing a state in which a new trough adjacent to the new trough is connected and the new trough is disposed on the soft sheet.

FIG. 5 is an explanatory diagram showing a state in which a new trough is arranged inside an old trough.

FIG. 6 is a longitudinal sectional view of FIG.

7 is a cross-sectional view corresponding to FIG. 2 after disposing a new trough.

[Explanation of symbols]

 1 folded plate roof 2 old valley gutter 3 receiving metal fittings 4 drain 5 vertical gutter 6 unevenness 7 new valley gutter 71 connection part 8 soft sheet 9a, 9b reinforcing plate 10 fasteners

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Katsumi Shimizu 3-15-1, Negishidai, Asaka-shi, Saitama Sekisui Chemical Co., Ltd.

Claims (5)

[Claims] 1. A rehabilitated trough structure in which a new trough is disposed inside an old trough, and a soft sheet is laid inside the old trough, and a new trough is placed on the soft sheet. A rehabilitation trough gutter structure characterized by being provided with. 2. The connection between the new troughs is displaced from the connection between the old troughs by a predetermined distance in either the water side direction or the water side direction.
The rehabilitation gutter structure described. 3. A method for rehabilitating a trough by arranging a new trough inside an old trough, wherein a soft sheet is laid inside the old trough and a new trough is placed on the soft sheet. A method for rehabilitating a trough, which is characterized by being arranged. 4. A method for rehabilitating a trough by arranging a new trough inside an old trough, wherein a soft sheet is laid inside the old trough, and new troughs are laid on the soft sheet. The connection part of (1) is arranged in a state of being shifted by a predetermined distance in either the water side direction or the water side direction with respect to the connection part between the old troughs. 5. A method for rehabilitating a trough by arranging a new trough inside the old trough, wherein a soft sheet is laid inside the old trough, and a new trough is laid on the soft sheet. The end of the new trough adjacent to the end is overlapped to form a superposed portion, and reinforcing plates are provided above and below the superposed portion, and the superposed portion is sandwiched between the reinforcing plates, and one of the reinforcing plates is connected to the other. A method of rehabilitating a trough, characterized in that a new fastener is connected to the trough by penetrating a fixing tool through the reinforcing plate, and the troughs are connected to each other.