JP5791293B2 - Seat fixing device and waterproofing method - Google Patents

Description

  The present invention relates to a waterproofing method for waterproofing a roof, a structure, or the like of a building, and to a waterproofing method using a sheet fixing device that fixes a waterproof sheet to a base to be waterproofed, and the sheet fixing device.

  As a roof waterproofing method, a mechanical fixing method has been developed in which a sheet fixing device (fixing bracket) is disposed on a roof base, and the waterproof sheet is fixed to the base by bonding the waterproof sheet to the sheet fixing device. Examples of the shape of the fixing metal member disposed on the base include a disk shape and an elongated plate shape (plate shape).

  FIG. 6A is a view showing a state in which a waterproof sheet is fixed to a base using a conventional elongated plate-shaped sheet fixing device (also referred to as a plate-shaped fixing bracket). As shown in the figure, a sheet fixing device 610 is disposed on a concrete base 602 (hereinafter sometimes referred to as a concrete base) in parallel with a rising portion 604 of a roof 601 and is fastened with a fastener 612. The substrate 602 is driven and fixed. The interval W6 at which the sheet fixing device 610 is arranged is substantially the same as the width of the belt-shaped waterproof sheet 603 (about 1200 mm), and the side rear surface of the waterproof sheet 603 is bonded and fixed to the upper surface of the sheet fixing device 610. To do. When the waterproof sheet 603 is a PVC sheet and the upper surface of the sheet fixing device 610 is covered with a PVC film, the waterproof sheet 603 and the sheet fixing device 610 are welded by dissolving the PVC film of the sheet fixing device 610 with a solvent or the like. can do.

  The conventional sheet fixing device 610 is usually configured by a metal plate that is folded on both sides, but the shape of the side varies depending on the location of the sheet fixing device 610, for example, the rising portion 604 of the roof. A rising edge 611 is formed on one side of the sheet fixing device 610a disposed in the vicinity of.

  Patent Document 1 discloses a waterproof sheet fixing bracket for fixing a waterproof sheet to a base. In the waterproof sheet fixing bracket of Patent Document 1, a fixing hardware is screwed to the upper surface of the roof base material along one direction thereof, and the waterproof sheet is stretched on the upper surface of the roof base material. It is a fixture in the roof waterproof structure stuck to a fixed hardware. Then, a groove-shaped recess is formed over the entire length of the fixing bracket, and a screw is passed through the required position of the recess, and when the screw is screwed into the roof base material, the screw head is fixed. The depth does not protrude from the upper surface of the hardware.

JP 2000-45464 A

  When the elongate plate-like sheet fixing device 610 as shown in FIG. 6A is used, the waterproof sheet 603 can be fixed in a linear shape, so that the stress applied to the waterproof sheet 603 can be dispersed in a linear shape. . However, when the strength of the sheet fixing device 610 is insufficient, or when the interval W6 of the sheet fixing device 610 is too wide, the sheet fixing device 610 is deformed and the waterproof sheet 603 is placed between the waterproof sheet 603 and the sheet fixing device 610. May break. Specifically, as shown in FIG. 6B, for example, when a strong wind blows in the direction of arrow A, the waterproof sheet 603 floats upward (in the direction of arrow B), and stress (arrow C) is applied to the sheet fixing device 610. Concentrate. When the concentrated stress exceeds the strength of the sheet fixing device 610, the sheet fixing device 610 may be plastically deformed in a bow shape. Once the sheet fixing device 610 is plastically deformed, the waterproof sheet 603 is stretched between the sheet fixing device 610 and the waterproof sheet 603, and damage such as breakage is likely to occur. Therefore, it is desired to prevent plastic deformation of the plate-shaped fixture due to the rising of the waterproof sheet and to prevent damage to the waterproof sheet. In addition, Patent Document 1 describes that when fixing the waterproof sheet fixing hardware to the base, the screw head is stored in the groove-shaped recess so that the head of the screw does not protrude from the upper surface, but the waterproof sheet is caused by the rising of the waterproof sheet. There is no suggestion about preventing the damage of the.

  The present invention is a sheet fixing device for fixing a waterproof sheet to a base, and is provided on an upper surface, an elongated main body having a lower surface opposite to the upper surface and both side portions, and an upper surface of the main body, and is joined to the waterproof sheet. A sheet joining portion; a support portion that extends downward from one of the side portions of the main body and supports the main body in contact with the base; and a lower surface inside the both side portions of the main body in the longitudinal direction of the main body. And a reinforcing portion provided so as to extend downward and project downward. A seat fixing device is provided.

  The present invention also provides a sheet fixing device having a groove-shaped recess formed on the upper surface of the main body along the reinforcing portion.

  The present invention also provides a seat fixing device in which the height from the lower end to the upper end of the reinforcing portion is the same as the height from the lower end to the upper end of the support portion.

  The present invention also provides a seat fixing device, wherein the reinforcing portion has a side surface, and the side surface of the reinforcing portion is provided so as to be orthogonal to the lower surface of the main body.

  The present invention also provides a seat fixing device, wherein the support portion has a side surface, and the side surface of the support portion is provided so as to be orthogonal to the lower surface of the main body.

  The present invention also provides a seat fixing device in which the support portion has a flange portion projecting laterally at the lower end.

  In addition, the present invention provides a sheet fixing device in which a through hole for passing a fastener for fixing the sheet fixing device to the base is formed in the sheet joining portion.

  The present invention also provides a sheet fixing device in which a through hole for passing a fastener for fixing the sheet fixing device to the base is formed in the reinforcing portion.

  Moreover, this invention provides the waterproofing method of fixing a waterproof sheet to a foundation | substrate using the said sheet | seat fixing device.

  Further, according to the present invention, the waterproof sheet is a belt-like sheet having a length and a width, and a plurality of the sheet fixing devices are arranged in parallel to each other at half the width of the waterproof sheet and fixed to the base. And the waterproof construction method which fixes the said waterproof sheet to the said foundation | substrate by bonding the said waterproof sheet to the said sheet fixing apparatus by making the length direction of the said waterproof sheet match the said longitudinal direction of the said sheet fixing apparatus.

  Since the seat fixing device of the present invention includes a reinforcing portion provided to extend along the longitudinal direction of the main body and protrude downward from the lower surface inside the both sides of the main body separately from the support portion, Strength is higher than that. Therefore, even when stress is concentrated on the sheet fixing device due to the rising of the waterproof sheet, plastic deformation of the sheet fixing device can be prevented, and damage to the waterproof sheet between the sheet fixing device and the waterproof sheet can be reduced. it can.

It is a perspective view which shows the roof which fixed the waterproof sheet to the foundation | substrate using the sheet | seat fixing device by 1st embodiment of this invention. It is a figure which shows the sheet | seat fixing device by 1st embodiment of this invention, Fig.2 (a) is a top view, FIG.2 (b) is sectional drawing along the II-II line | wire of Fig.2 (a). The figure which shows the state which fixed the waterproof sheet to the foundation | substrate with the sheet | seat fixing device, FIG.2 (c) is an end elevation which shows another example of a sheet | seat fixing device. It is a figure which shows another example of the sheet | seat fixing device by 1st embodiment of this invention, Fig.3 (a) is a top view, FIG.3 (b) is sectional drawing along the III-III line of Fig.3 (a). It is a figure which shows the state which fixed the waterproof sheet to the foundation | substrate with the sheet | seat fixing device. It is a figure which shows the sheet | seat fixing device by 2nd embodiment of this invention, Fig.4 (a) is a top view, FIG.4 (b) is sectional drawing along the IV-IV line of Fig.4 (a), It is a figure which shows the state which fixed the waterproof sheet to the foundation | substrate with the sheet | seat fixing device. It is a figure which shows another example of the sheet | seat fixing device by 2nd embodiment of this invention, Fig.5 (a) is a top view, FIG.5 (b) is sectional drawing along the VV line of Fig.5 (a). It is a figure which shows the state which fixed the prevention sheet | seat to the foundation | substrate with the sheet | seat fixing device. FIG. 6A is a perspective view showing a conventional sheet fixing device, and FIG. 6B is a view showing a state in which the waterproof sheet is lifted.

  Embodiments of the present invention will be described below with reference to the accompanying drawings. In the following embodiments, the same or similar components are denoted by common reference numerals. The drawings are naturally not to scale, and the proportions of specific parts that should be clarified are exaggerated.

(First embodiment)
FIG. 1 is a perspective view showing a roof 1 in which a waterproof sheet 3 is fixed to a concrete base 2 using a sheet fixing device 10 according to the first embodiment of the present invention, and FIG. 2 is a sheet fixing device according to the first embodiment. 2A is a plan view, and FIG. 2B is a cross-sectional view of the sheet fixing device 10 taken along the line II-II in FIGS. 1 and 2A.

  The sheet fixing device 10 of the present embodiment is an elongated plate-shaped fixing bracket that fixes a belt-shaped waterproof sheet 3 having a length and a width W2 to the roof 1. As shown in FIG. 1, a plurality of sheet fixing devices 10 are arranged on the upper surface of the concrete base 2 so as to be parallel to each other with a predetermined interval W <b> 1, and each sheet fixing device 10 is attached to the concrete base 2 by fasteners 24. Fixed. Then, the waterproof sheet 3 is fixed to the concrete base 2 by aligning the length direction of the waterproof sheet 3 with the longitudinal direction of the sheet fixing device 10 and bonding the back surface (lower surface) of the waterproof sheet 3 to the upper surface of the sheet fixing device 10. To do.

  The sheet fixing device 10 of this embodiment is a metal member, and as shown in FIG. 2A, an elongated plate-like main body 12 having an upper surface 12a, a lower surface 12b opposite to the upper surface 12a, and both side portions 12c and 12d. And a sheet joining portion 14 that is provided on the upper surface 12a of the main body 12 and is joined to the waterproof sheet 3, and a support portion that extends downward from both side portions 12c and 12d of the main body 12 and supports the main body 12 in contact with the upper surface of the concrete base 2 18. In addition to the support 18, two reinforcements that reinforce the strength of the main body 12 are provided so as to extend along the longitudinal direction and protrude downward on the lower surface 12 b inside the both sides 12 c and 12 d of the main body 12. The unit 20 is provided. Further, the sheet fixing device 10 has a groove-shaped recess 21 formed on the upper surface 12a of the main body 12 along the reinforcing portion 20, and the sheet joining portion 14 of the present embodiment is formed by the two recesses 21. It is divided into joint portions 14a, 14b, and 14c (hereinafter, these may be collectively referred to as a sheet joint portion 14).

  The sheet fixing device 10 of this embodiment is fixed to the concrete base 2 using a fastener 24. Therefore, a plurality of through holes 26 through which the fasteners 24 pass are formed along the longitudinal direction of the sheet fixing device 10 at a certain distance D at substantially the center in the width direction of the sheet fixing device 10. A counterbore 27 is formed around each through-hole 26. When the sheet fixing device 10 is fixed to the concrete base 2 as shown in FIG. 2 (b), the head of the fastener 24 is joined to the sheet. It does not protrude from the portion 14.

  The support portion 18 of the sheet fixing device 10 is formed such that the side surface 18a of the support portion 18 is orthogonal to the lower surface 12b of the main body 12 so that the strength can be most effectively exhibited against stress in the vertical direction. Yes. Therefore, the support part 18 is installed so as to be perpendicular to the concrete foundation 2. In the sheet fixing device 10 of the present embodiment, the support portions 18 are provided on the both side portions 12c and 12d of the main body 12, but the support portions 18 may be provided on any one of the side portions of the main body 12, for example, In the case of the sheet fixing device 10 arranged along the rising portion (not shown) of the roof 1, a rising portion may be provided instead of the support portion 18 at the side portion of the main body 12 in contact with the rising portion (FIG. 6A). ) (See rise 611).

  Further, as shown in the figure, a flange portion 22 that protrudes laterally may be provided at the lower end of the support portion 18 of the sheet fixing device 10 so that the support portion 18 can be stably stood. In the figure, the flange portion 22 protrudes toward the outside of the side of the sheet fixing device 10, but may extend toward the inside of the side. Further, the flange portion 22 may be formed so as to extend both inside and outside.

  As described above, the sheet bonding portion 14 is a portion that is bonded to the lower surface of the waterproof sheet 3 with an adhesive or the like, and is formed on a flat surface that does not protrude in order to improve adhesion. The greater the width of the sheet bonding 14, the stronger the adhesive force to the waterproof sheet 3, and the width is preferably 40 mm or more, and preferably 50 mm or more. In the present embodiment, the total of the widths W3a, W3b, and W3c of the sheet joining portions 14a, 14b, and 14c is 50 mm or more. Moreover, the sheet | seat joining part 14 is coat | covered with the polyvinyl chloride film, and it welds to the waterproof sheet 3 by fuse | melting the coated vinyl chloride film with a solvent by making a waterproof sheet into a vinyl chloride sheet which consists of a polyvinyl chloride resin. Can do.

  Next, the reinforcement part 20 of the sheet fixing device 10 will be described in detail. As shown in FIGS. 2 (a) and 2 (b), the reinforcing portion 20 extends along the longitudinal direction of the main body 12 on the lower surface 12b inside the both side portions 12c and 12d of the main body 12 and protrudes downward. The strength of the main body 12 is reinforced. In this embodiment, the two reinforcement parts 20 are provided in the lower surface 12b of the main body 12, and the bottom part 20a (lower end) of the reinforcement part 20 touches the upper surface of the concrete foundation 2, ie, the reinforcement part 20 is the main body 12. The height H2 from the lower end to the upper end protruding from the lower surface 12b of the support portion 18 is formed to be the same as the height H1 from the lower end to the upper end of the support portion 18. By adopting such a configuration, the main body 12 is supported not only by the support portion 18 but also by the reinforcing portion 20. The side surface 20b of the reinforcing portion 20 is formed so as to be orthogonal to the lower surface 12b of the main body 12 so as to exhibit the strength most efficiently against the stress in the vertical direction. In other words, the sheet fixing device 10 of the present embodiment is processed to be uneven in parallel to the longitudinal direction of the sheet fixing device 10 in order to suppress deformation due to the rising of the waterproof sheet 3, and Deformation strength is provided by making all the irregularities of 18 and the reinforcing part 20 have a right angle.

  The greater the height H1 of the support portion 18 and the height H2 of the reinforcement portion 20, the higher the strength of the sheet fixing device 10, but considering the flatness from the roof surface, the size is 3 mm to 8 mm. It is preferable that the thickness is about 6 mm. In addition, it is desirable that the height H2 of the reinforcing portion 20 and the height H1 of the support portion 18 are the same. However, when sufficient strength can be secured, the height H2 of the reinforcing portion 20 is set to the height of the support portion 18. It may be lower than H1. In addition, the size of the width W4 at which the concave portion 21 opens is arbitrary, but in order to ensure that the width of the sheet bonding portion 14 is wider, the width W4 of the concave portion 21 is preferably narrowed, and the width W4 is set to 0 mm. You may form the reinforcement part 20 only in the side part 20b.

  The sheet fixing device 10 of this embodiment is made of metal as described above, and is manufactured by bending a steel plate having a thickness of 0.5 mm to 2.0 mm. By forming the reinforcing portion 20 by bending, the sheet fixing device 10 can be easily and inexpensively manufactured. Considering the strength, the thickness of the steel plate should be 0.6 mm or more, and preferably about 1 mm. Moreover, as a concrete steel plate, for example, a hot dip galvanized steel plate, a paint hot dip galvanized steel plate, an electrogalvanized steel plate, a hot dip galvanized steel plate, a hot dip zinc-5% aluminum alloy plated steel plate, a paint hot dip zinc-5% aluminum alloy plated steel plate , Coated stainless steel plate, molten 55% aluminum-zinc alloy plated steel plate, painted molten 55% aluminum-zinc alloy plated steel plate, hot rolled stainless steel plate, cold rolled stainless steel plate. Moreover, although the sheet fixing apparatus 10 of this embodiment is coat | covered with the vinyl chloride film (polyvinyl chloride resin), it is not limited to this, You may coat | cover with a polyester resin and an acrylic resin. The sheet fixing device 10 is preferably made of metal from the viewpoint of strength and manufacturing cost, but may be made of reinforced plastic or synthetic resin, for example. In addition, the length of one sheet fixing apparatus 10 is about 2 m, and the width W5 is formed with about 70 mm to 75 mm.

  The fastener 24 may be any shape fastener as long as it is commonly used to fix the sheet fixing device to the base in the conventional waterproofing method. In the figure, a screw is shown as an example of the fastener 24. However, the fastener 24 may be used in combination with, for example, a plastic curl plug, and the tip of the screw is opened by hitting the screw head with a hammer to provide a concrete base. It may be firmly fixed to 2. In selecting the fastener 24, it is necessary to pay attention to the pullout strength with respect to the concrete base 2, and when the pullout strength is small, it is necessary to reduce the interval D at which the fastener 24 is disposed.

  The conventional sheet fixing device is disposed at the same interval as the width of the waterproof sheet 3 of the belt-shaped waterproof sheet 3. In the case of a waterproof construction method using an elongated plate-like sheet fixing device, usually, the longitudinal direction of the sheet fixing device 10 and the length direction of the belt-like waterproof sheet 3 are aligned, and the waterproof sheet 3 is adhered to the sheet fixing device 10 to be waterproof. Secure the seat. In the present embodiment, as shown in FIG. 1, the interval W <b> 1 for arranging the sheet fixing device 10 is half of the width W <b> 2 of the waterproof sheet 3, and two sheet fixing devices 10 are used for one waterproof sheet 3. The waterproof sheet 3 is fixed to the concrete base 2. By narrowing the interval at which the sheet fixing device 10 is arranged, the stress concentration on one sheet fixing device 10 is reduced, the load on the sheet fixing device 10 is reduced, and the plasticity due to the rising of the waterproof sheet 3 is reduced. Deformation is prevented. Since the width W2 of the general waterproof sheet 3 is about 1200 mm, the interval W1 for disposing the sheet fixing device 10 is about 600 mm.

  FIG. 2C is a diagram illustrating another example of the sheet fixing device 10 according to the present embodiment. The reinforcing portion 20 of the sheet fixing device 10 may be realized by welding a metal bar having a circular cross section to the lower surface 12b of the main body 12 as shown in FIG. Moreover, although the sheet fixing apparatus 10 of this embodiment is produced by bending a metal plate, it may be produced, for example, by extrusion using a die (die).

  The sheet fixing device 10 illustrated in FIG. 2A includes the two reinforcing portions 20, but as illustrated in FIGS. 3A and 3B, the number of reinforcing portions 20 provided in the sheet fixing device 10. It is good also as one provided in the width direction center of the main body 12. In this case, the fastener 24 that fixes the sheet fixing device 10 to the concrete base 2 is disposed along the center in the width direction of each of the sheet joint portions 14 divided by the recesses 21. Further, as shown in FIG. 3A, fasteners 24 may be arranged in a staggered manner in the sheet joining portion 14. Thus, the reinforcement part 20 may be one and the intensity | strength of a sheet fixing device can be adjusted by adjusting the number of the reinforcement parts 20. FIG. When it is desired to increase the strength, three or more reinforcing portions 20 may be provided in parallel to the longitudinal direction of the main body 12.

  The waterproofing construction method of this embodiment is demonstrated. First, a plurality of sheet fixing devices 10 are arranged parallel to each other on the concrete base 2 of the roof 1. The interval at which the sheet fixing device 10 is arranged is half the width of the waterproof sheet 3. Then, the sheet fixing device 10 is fixed to the concrete base 2 using the fastener 24. Next, after applying or applying an adhesive to the sheet bonding portion 14 of the sheet fixing device 10, the waterproof sheet 3 is bonded by aligning the longitudinal direction of the waterproof sheet 3 with the longitudinal direction of the sheet fixing device 10. 3 is fixed to the concrete base 2. The PVC film coated on the sheet bonding portion 14 may be melted with a solvent, and the waterproof sheet 3 of the PVC sheet may be bonded to the sheet fixing device 10.

(Second embodiment)
Next, a second embodiment of the present invention will be described with reference to the drawings. FIG. 4 is a view showing the sheet fixing device 210 according to the present embodiment. FIG. 4 (a) is a plan view of the sheet fixing device 210, and FIG. 4 (b) is taken along line IV-IV in FIG. 4 (a). It is sectional drawing and shows the state which fixed the waterproof sheet 3 to the concrete base | substrate 2 with the sheet | seat fixing device 210. FIG. The sheet fixing device 210 is fixed to the concrete base 2 by the fastener 24 as in the sheet fixing device 10 shown in FIG. 1, and the waterproof sheet 3 is attached to the concrete base 2 by bonding the sheet fixing device 210 and the waterproof sheet 3. Fix it.

  The sheet fixing device 210 includes an elongated plate-like main body 212, a sheet bonding portion 214 that is bonded to the waterproof sheet 3 provided on the upper surface of the main body 212, and a support that extends downward from both sides of the main body 212 and supports the main body 212. Part 218. A flange portion 222 is formed at the lower end of the support portion 218. Similarly to the sheet fixing device 10 of the first embodiment, the sheet fixing device 210 includes a reinforcing portion 220 provided on the lower surface of the main body 212 so as to extend along the longitudinal direction and protrude downward. The height H2 from the lower end to the upper end of the reinforcing portion 220 is the same as the height H1 from the lower end to the upper end of the support portion 218, and the bottom portion 220a of the reinforcing portion 220 is in contact with the concrete substrate 2. In addition, the main body 212 has a single groove-shaped recess 221 formed along the reinforcing portion 220 in the center in the width direction. Since the functions and shapes of the sheet joining portion 214, the support portion 218, the reinforcing portion 220, the concave portion 221 and the flange portion 222 of the present embodiment are the same as those of the sheet fixing device 10 in FIGS. Detailed description thereof will be omitted.

  Compared with the sheet fixing device 10 of the first embodiment, the sheet fixing device 210 of the present embodiment has an attachment position of the fastener 24 that fixes the sheet fixing device 210 to the concrete base 2, that is, a through hole 226 through which the fastener 24 passes. The positions to be formed are different. Specifically, the through hole 226 is formed in the lower end of the reinforcing portion 220, that is, the bottom portion 220 a, and the fastener 24 is passed through the concave portion 221 and the through hole 226 to fix the sheet fixing device 210 to the concrete base 2.

  Since the head portion of the fastener 24 is hidden in the recess 221, it is not necessary to form a counterbore around the through hole 226 as in the seat fixing device 10 of the first embodiment. Further, since the bottom portion 220a of the reinforcing portion 220 is in contact with the concrete base 2, when fixing with the fastener 24, the sheet fixing device 210 can be fixed without the periphery of the through hole 226 being bent. The size of the width W5 of the concave portion 221 is determined in consideration of the size of the head portion of the fastener 24 that fixes the sheet fixing device 210, and is formed to be approximately 10 mm to 12 mm.

  Another example of the sheet fixing device 210 is shown in FIG. In the sheet fixing device 210 shown in FIG. 5, two reinforcing portions 220 are provided in parallel to each other in the longitudinal direction of the main body 212. And the through-hole 226 which lets the fastener 24 pass is formed in the bottom part 220a of each reinforcement part 220. As shown in FIG. By providing the two reinforcing portions 220, the strength of the sheet fixing device 210 can be further increased. The through holes 226 formed in the reinforcing portion 220 may be arranged in a staggered manner as shown in FIG.

  In order to confirm the effect of the sheet fixing device of the present embodiment, a strength comparison experiment with a conventional sheet fixing device was performed. In the experiment, in order to reproduce the rising phenomenon of the waterproof sheet, the space between the waterproof sheet and the base is sealed, and the air is pressurized by the air compressor to raise the waterproof sheet.

  When a waterproof sheet was fixed using a conventional sheet fixing device and air was pressurized at about 2000 Pa, the waterproof sheet was lifted and the conventional sheet fixing device was plastically deformed. And even after decompressing, the deformation | transformation of the sheet fixing device did not return and the waterproof sheet was in the extended state. On the other hand, when the waterproof sheet was fixed using the sheet fixing device of the present embodiment and the internal air was pressurized at about 2000 Pa, the sheet fixing device did not plastically deform even if elastically deformed. After decompression, the sheet fixing device returned to its original shape, and the waterproof sheet did not stretch.

  When the waterproof sheet is lifted by a strong wind, the strength of the conventional sheet fixing device (plate-shaped fixing bracket) is insufficient, and when the stress is concentrated on the sheet fixing device, the sheet fixing device may be plastically deformed. The seat fixing device according to the present invention is provided so as to extend along the longitudinal direction of the main body and protrude downward on the lower surface inside the both sides of the main body separately from the support portion extending downward from the side portion of the main body. By providing the reinforced portion, the strength against deformation is increased, and plastic deformation due to the rising of the waterproof sheet can be prevented to prevent the waterproof sheet from being damaged.

  The embodiment of the present invention has been described above with reference to the accompanying drawings. In the present embodiment, the description has been made on the assumption that the foundation of the roof is a concrete slab. However, the present invention is not limited to the concrete foundation but also the foundation of a general building structure such as a steel structure or a wooden structure. The sheet fixing device can be used.

DESCRIPTION OF SYMBOLS 1 Roof 2 Base 3 Waterproof sheet 10,210 Sheet fixing device 12,212 Main body 14,214 Sheet joint part 18,218 Support part 18a, 218a Side surface of support part 20,220 Reinforcement part 20a, 220a Bottom part of reinforcement part 20b, 220b Reinforcement side surface 21, 221 Recess 22, 222 Flange 24 Fastener 26, 226 Through hole 27 Counterbore

Claims (5)

A sheet fixing device for fixing a waterproof sheet to a base,
An elongated body having an upper surface, a lower surface opposite to the upper surface, and both sides;
A sheet bonding portion provided on the upper surface of the main body and bonded to the waterproof sheet;
A support portion extending downward from at least one side of the main body and supporting the main body in contact with the base;
A reinforcing portion provided on the lower surface inside the both side portions of the main body so as to extend along the longitudinal direction of the main body and protrude downward;
The reinforcing portion has a side surface and a bottom portion, and the side surface and the bottom portion of the reinforcing portion have a concave shape, and the height from the lower end to the upper end of the reinforcing portion is from the lower end to the upper end of the support portion. The side surface of the reinforcing portion is provided to be orthogonal to the lower surface of the main body ,
In the sheet joint portion, a through hole for passing a fastener for fixing the sheet fixing device to the base is formed at a place different from the reinforcing portion.
A sheet fixing device characterized by that.   The seat fixing device according to claim 1, wherein the support portion has a side surface, and the side surface of the support portion is provided so as to be orthogonal to the lower surface of the main body.   The sheet fixing device according to claim 1, wherein the support portion has a flange portion projecting laterally at a lower end. The waterproof construction method which fixes a waterproof sheet to a foundation | substrate using the sheet | seat fixing device as described in any one of Claim 1 to 3 . The waterproof sheet is a belt-like sheet having a length and a width,
A plurality of the sheet fixing devices are arranged in parallel with each other at half the width of the waterproof sheet and fixed to the base,
The waterproof sheet according to claim 4 , wherein the waterproof sheet is bonded to the sheet fixing device by aligning the length direction of the waterproof sheet with the longitudinal direction of the sheet fixing device, thereby fixing the waterproof sheet to the base. Construction method.

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