JP2006002524A - Deterioration diagnostic method for waterproof sheet, waterproof sheet sampling tool adapted for diagnostic method and waterproof sheet construction - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a deterioration diagnostic method for a waterproof sheet which can accurately collect a sampling and deters propagation of cracks so as to effectively prevent a water-leakage accident. <P>SOLUTION: A waterproof sheet sampling tool 3 with a ring-shaped flat surface having a sheet joining layer 32 on at least the surface of a rigid substrate 31 of the tool is prepared in advance. When laying the waterproof sheet 1 on a surface Ma to be waterproofed of the structure body M, the water proof sheet sampling tool 3 is fixed on the surface Ma to be waterproofed. In diagnosing deterioration of the waterproof sheet, a part of the existing waterproof sheet 1 is cut off as a sample, using the waterproof sheet sampling tool 3 as a guide. The hole 11 formed after cutting off is covered with a repairing waterproof sheet 10 and furthermore the periphery of the repairing waterproof sheet 10 is joined to the waterproof sheet 1 on the outer side area of the hole 11. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a waterproof sheet deterioration diagnosis method for diagnosing deterioration of a waterproof sheet laid on a waterproof construction surface of a structure body such as a building rooftop, a waterproof sheet collecting jig used in the diagnosis method, and The present invention relates to a waterproof sheet laying structure.

  As a waterproofing method for waterproof surfaces of structures such as building rooftops, a plurality of sheet bonding plates whose front and back surfaces of a rigid substrate are covered with a resin layer are evenly arranged over the entire waterproof surface of the structure And then lay a synthetic resin waterproof sheet on the sheet bonding plate, and melt the resin layer and the waterproof sheet on the sheet bonding plate using a solvent or hot air to bond the waterproof sheet to the sheet. Insulating methods for joining and integrating plates are well known (see, for example, Patent Documents 1 and 2).

  Since the waterproof sheet deteriorates over time, if a predetermined period of time elapses, a part of the waterproof sheet is cut out, a sample for waterproof sheet deterioration diagnosis is collected, the degree of deterioration is determined by inspecting this sample, and the waterproof sheet is waterproofed. There is a case where the timing of sheet replacement is diagnosed.

  As methods for diagnosing deterioration of waterproof sheets, methods such as hardness measurement, contact angle measurement, or image analysis have been proposed, but it is more accurate to cut out and inspect the actually deteriorated waterproof sheet. be able to.

The inspection worker collects the diagnostic sample by cutting off the waterproof sheet, and then covers the hole after the waterproof sheet is cut off with a waterproof sheet for repair, and the peripheral portion of the hole after the cutting is already provided. Post-treatment to join watertight to the waterproof sheet.
JP 2000-179103 A (Page 4, FIG. 5) Japanese Patent Laying-Open No. 2003-253822 (page 4, FIG. 1)

  By the way, the existing waterproof sheet is deteriorated and a tension in the laid state is urged, so that a recess (notch) is formed on the inner peripheral surface of the hole due to the cutting, and a crack is generated therefrom. It is easy to get up. For this reason, even after joining the waterproof sheet for repair, cracks may propagate outward from the front surface or the back surface of the waterproof sheet, starting from the depression. When the crack reaches a region beyond the outer edge of the repair sheet, a water leakage path due to the crack is formed, and the watertightness may be impaired.

  For this reason, the inspection worker must carefully perform repair work so that cracks do not spread from the depression. However, since the inspection worker is not always a person skilled in repair work such as a waterproofing contractor, even if the repair work is performed with great care, the crack may occur. is there.

  In addition, although the inspection worker has received an instruction of the location where the waterproof sheet is cut out in order to collect the sample, in fact, the location where the cut out is not clearly indicated on the construction site, I often don't know where to cut. If an appropriate location cannot be cut out, a reliable deterioration diagnosis cannot be made.

  The present invention has been made in view of the above circumstances, and is capable of accurately collecting a sample for deterioration diagnosis of a waterproof sheet, and can effectively prevent the occurrence of a water leakage accident by suppressing the propagation of cracks from the cut-out location. It is an object of the present invention to provide a sheet deterioration diagnosis method, a waterproof sheet collecting jig employed in the diagnosis method, and a waterproof sheet laying structure.

  In order to solve the above problems, the present invention adopts the following configuration.

  [1] Applied to a waterproof sheet laying structure in which a waterproof sheet is laid in a state of being partially fixed by a sheet fixing plate on a waterproof construction surface of a structure body, and the existing waterproof sheet after a predetermined period has elapsed. In the method for diagnosing deterioration of a waterproof sheet, a flat annular waterproof sheet collecting jig having a sheet bonding layer provided on at least the surface of a rigid jig substrate is prepared in advance, and the waterproof sheet is laid In fixing the waterproof sheet collecting jig to the waterproof construction surface, the jig and the waterproof sheet are joined, and at the time of waterproof sheet deterioration diagnosis, the waterproof sheet collecting jig in the waterproof sheet Cut off the portion corresponding to the annular opening to collect the waterproof sheet deterioration diagnosis sample, and then close the hole after cutting off the waterproof sheet with the restoration waterproof sheet Rutotomoni, degradation diagnosis method of the waterproof sheet, which comprises bonding the periphery of the waterproof sheet for repair outside the region than the hole in the existing waterproofing sheet.

  The present invention can employ the following configurations.

  [1a] The paragraph 1 described above, wherein the restoration waterproof sheet is disposed on the upper surface side of the cut-out hole, and the peripheral portion of the restoration waterproof sheet is joined to the hole peripheral portion on the upper surface side of the waterproof sheet. A method for diagnosing deterioration of waterproof sheets.

  [1b] The item described in 1 above, wherein the restoration waterproof sheet is disposed on the lower surface side of the cutout hole, and the peripheral portion of the restoration waterproof sheet is joined to the hole peripheral portion on the lower surface side of the waterproof sheet. A method for diagnosing deterioration of waterproof sheets.

  [2] A part of the waterproof sheet is interposed between the waterproof construction surface of the structure body and the waterproof sheet laid on the waterproof construction surface to collect a sample for deterioration diagnosis of the waterproof sheet. A jig for collecting a waterproof sheet used as a cutting guide when cutting, and is constituted by a planar annular resin laminate having at least the surface of a rigid jig substrate covered with a resin layer and having an opening in the center. A waterproof sheet collecting jig characterized by comprising:

  [3] The waterproof sheet collecting jig according to item 2, wherein an opening area of the opening is set to 25 cm 2 or more.

  [4] In a waterproof sheet laying structure in which a waterproof sheet is laid in a state where the waterproof sheet is partially fixed by a sheet fixing plate on the waterproof construction surface of the structure body, the waterproof construction surface of the structure body is waterproof. An annular waterproof sheet collecting jig used as a cutting guide when cutting a part of the sheet and collecting a sample for deterioration diagnosis is fixed, and the outer peripheral portion of the waterproof sheet collecting jig and the waterproof sheet A waterproof sheet laying structure characterized by joining.

  [5] The waterproof sheet laying structure according to item 4, wherein a watertight member is interposed between the waterproof sheet collecting jig and the waterproof construction surface of the structure body.

  [6] A plurality of the sheet fixing plates are arranged and fixed on the waterproof construction surface, and the corresponding portions of the waterproof sheet are joined to the surface of each sheet fixing plate, respectively, while the fixing points of the sheet fixing plate are fixed 6. The waterproof sheet laying structure according to 4 or 5 above, wherein the waterproof sheet collecting jig is fixed instead of the sheet fixing plate.

  [7] The waterproof sheet includes first and second waterproof sheets, and an edge portion of the first waterproof sheet is fixed to the waterproof construction surface by the sheet fixing plate. 6. The waterproof sheet laying structure according to item 4 or 5, wherein an edge portion is overlapped and joined to an edge portion of the first waterproof sheet.

  [8] A plurality of the sheet fixing plates are fixed at intervals along an edge portion of the first waterproof sheet, while the waterproofing sheet is provided in place of the sheet fixing plate at any one of the fixing points of the sheet fixing plate. 6. The waterproof sheet laying structure according to 4 or 5 above, wherein a sheet collecting jig is fixed.

  In the present invention, the following configuration can be adopted.

  [8a] The laying structure of the waterproof sheet according to item 7 or 8, wherein an edge portion of the first waterproof sheet is fixed by being pressed from above by the sheet fixing plate.

  [8b] Laying the waterproof sheet according to item 7, 8 or 8a, wherein the upper surface of the sheet fixing plate and the waterproof sheet are configured in a non-bonded state (non-adhered state, non-welded state, non-fused state, etc.). Construction.

  According to the waterproof sheet deterioration diagnosis method of the invention [1], the waterproof sheet collecting jig is fixed to the waterproof construction surface of the structure body during the waterproof construction work. By deciding the position where the jig is installed as a design item, it is easy to specify the position where the deterioration diagnosis sample of the existing waterproof sheet is obtained from the position of the waterproof sheet collecting jig when performing the deterioration diagnosis of the waterproof sheet. Therefore, the inspection operator can collect the deterioration diagnosis sample accurately and promptly.

  In particular, in order to obtain the deterioration diagnostic sample, when the waterproof sheet is cut out using a waterproof sheet collecting jig as a guide, a recess in the cut section is formed, and even if a crack spreads from the recess, the waterproof Since the outer peripheral portion of the opening of the sheet collecting jig and the existing waterproof sheet are joined, the propagation of the crack is suppressed at the joining portion, and the crack is transmitted to reach the waterproof construction surface in the structure body. Water leakage is surely prevented.

  According to the method of the invention [1a], the repairing waterproof sheet is arranged from the upper side of the cut-out hole and joined, so that the joining work can be easily performed.

  According to the method of the invention [1b], since the waterproof sheet for repair is bonded to the peripheral portion of the hole on the lower surface side of the waterproof sheet with little deterioration over time, the waterproof sheet for repair can be bonded in a stable state. .

  According to the jig for collecting a waterproof sheet of the invention [2], since the surface is coated with a resin layer, it is waterproofed by solvent welding, hot air welding, adhesive welding (adhesion), dielectric heating means, induction heating means, etc. If the resin layer of the sheet collecting jig and the waterproof sheet are bonded or melt bonded, the waterproof sheet can be easily and reliably joined to the outer periphery of the waterproof sheet collecting jig.

  According to the waterproof sheet laying structure of the invention [3], a sample necessary for diagnosis can be obtained with certainty.

  According to the waterproof sheet laying structure of the invention [4], the waterproof sheet collecting jig can be easily fixed in the same procedure as that of the sheet bonding plate at the time of waterproof construction, and the waterproof construction work can be smoothly performed.

  According to the waterproof sheet laying structure of the invention [5], a watertight member such as a packing member is interposed between the waterproof sheet collecting jig and the waterproof construction surface of the structure main body. Even if water leakage occurs at the interface with the waterproof sheet, the watertight member can reliably prevent it from reaching the waterproof construction surface side.

  According to the waterproof sheet laying structure of the invention [6], the waterproof sheet collecting jig can also be used as a sheet bonding plate.

  According to the waterproof sheet laying structure of the inventions [7] and [8], the waterproof sheet can be laid by means such as being pressed by the sheet fixing plate without being joined to the sheet fixing plate.

  1 and 2 are a perspective view and a sectional view, respectively, showing a waterproof sheet laying structure in which the waterproof sheet deterioration diagnosis method according to the first embodiment of the present invention is employed.

  1 and 2, the waterproof sheet laying structure includes a waterproof sheet 1 laid on a waterproof construction surface Ma in a structure main body M such as a building roof, and a plurality of sheet bonding plates (sheets) for bonding a waterproof sheet. (Fixing plate) 2 and a waterproof sheet collecting jig 3 used when collecting a sample for waterproof sheet deterioration diagnosis. The waterproof construction surface Ma may be provided with various layers such as a heat insulating layer, an insulating layer, a conductive layer, and a second waterproof layer (including a waterproof sheet). In order to clarify the gist, such a layer is omitted for explanation.

  The waterproof sheet 1 is a sheet having a predetermined size made of thermoplastic synthetic resin such as vinyl chloride resin, rubber such as butyl rubber, ethylene propylene rubber (EPM), chlorosulfonated polyethylene, or thermoplastic elastomer such as olefin. Specific examples include those made of a vinyl chloride resin, and recently made of polyolefin elastomers such as polyethylene resin and polypropylene resin, which are less likely to deteriorate the environment. As the waterproof sheet 1, in addition to a single sheet made of a single synthetic resin, a composite sheet in which a plurality of synthetic resins are laminated and a sheet in which a reinforcing layer is interposed may be used.

  As shown in FIG. 3, the sheet bonding plate 2 is composed of a resin-coated steel plate in which synthetic resin layers 22 and 22 having a thickness of about 100 μm are laminated on both front and back surfaces of a metal substrate 21 such as a steel plate. .

  The resin layer 22 in the sheet bonding plate 2 is not particularly limited as long as it is made of a thermoplastic resin, but a resin having the same property as the waterproof sheet 1 as a bonding target or a hot melt adhesive is used. It can be used suitably. For example, in the case of using a resin having the same property, for example, a polyolefin-based elastomer such as a polyvinyl chloride resin, the above-described polyethylene resin, or polypropylene resin, the compatibility of the resins can be further improved during the welding and joining. In the case of using induction heating at the time of welding and joining, a hot-melt adhesive is preferably used.

  In addition, this sheet joining plate 2 is usually formed into a disk shape having a diameter of, for example, about 65 to 85 mm, and a screw for fixing to the waterproof construction surface Ma in the structure body M at the center thereof, A hole 2a is formed through which the fixing member 4 such as an open leg nail or a curl plug can be inserted.

  The waterproof sheet collecting jig 3 is fixed to the waterproof construction surface Ma of the structure main body M at the time of construction of the waterproof sheet 1, corresponding to an arbitrary portion of the waterproof sheet 1, for example, FIG. 4, the jig substrate 31 and the resin layers 32 and 32 having a thickness of about 100 μm covering the front and back of the substrate 31 are formed. The overall thickness is 0.7 mm, and the planar shape is, for example, about 500 mm × 500 mm. It is molded into a square.

  The size of the central opening 3a of the waterproof sheet collecting jig 3 is, for example, 400 mm × 400 mm square. The opening 3a is a measure of the cut-out size for collecting the deterioration diagnosis sample of the waterproof sheet 1.

  Further, the outer peripheral portion (frame portion) 3b of the waterproof sheet collecting jig 3 has a plurality of insertion holes 30 into which the fixing members 5 for fixing to the waterproof construction surface Ma of the structure body M are inserted. For example, it is formed in 8 places.

  The jig substrate 31 is made of a metal material such as a steel plate similarly to the sheet bonding plate 2, and the resin layer 32 is selected from polyolefin elastomers such as polyethylene resin and polypropylene resin in addition to polyvinyl chloride resin. .

  In order to lay the waterproof sheet 1 on the waterproof construction surface Ma in the structure main body M such as a building, first, the plurality of sheet joining plates 2 are arranged evenly over the entire waterproof construction surface Ma. Each sheet joining plate 2 is fixed to the waterproof construction surface Ma using a fixing member 4 such as a screw or an open leg nail.

  Furthermore, for the waterproof sheet deterioration diagnosis performed when a predetermined number of years have passed, the waterproof sheet collecting jig 3 is separated from the sheet joining plate 2 with respect to the waterproof construction surface Ma in the structure body M. Arrange it at any location. In the same manner as described above, the outer peripheral portion 3b of the waterproof sheet collecting jig 3 is fixed by using a fixing member 5 such as a screw or a spread leg nail.

  The installation work of the waterproof sheet collecting jig 3 can be performed in substantially the same manner as the fixing work of the sheet joining plate 2 performed when the waterproof sheet 1 is laid, so that no trouble is required.

  Moreover, since the installation work of this sheet | seat collection jig | tool 3 is performed by the operator at the time of construction of the waterproof sheet 1, the sheet | seat 1 and the waterproof sheet collection | recovery jig | tool 3 are joined appropriately.

  Thereafter, the waterproof sheet 1 is laid on the sheet joining plate 2 and the waterproof sheet collecting jig 3.

  In this state, the waterproof sheet 1, the sheet joining plate 2, and the outer periphery 3b of the waterproof sheet 1 and the waterproof sheet collecting jig 3 are, for example, solvent welded, hot air welded, adhesive bonding (welding), dielectric heating means, induction Bonding is performed by heating and fusing means.

  In joining the waterproof sheet 1 and the sheet joining plate 2, an adhesive such as a solvent is applied to the surface side of the waterproof sheet 1 corresponding to the sheet joining plate, or a hot air gun is inserted to blow hot air. Alternatively, a dielectric heating fusion device is arranged to cause dielectric heating, or an induction heating fusion device is arranged to cause induction heating. Thereby, the waterproof sheet 1 and the resin layer 22 in the sheet joining plate 2 are bonded or melted and integrated, and both 1 and 2 are joined in a watertight manner.

  Similarly, when joining the waterproof sheet 1 and the waterproof sheet collecting jig 3, an adhesive such as a solvent is applied to the position corresponding to the periphery of the collecting jig 3 on the surface side of the waterproof sheet 1 or hot air is applied. A gun is inserted to blow hot air, a dielectric heating and fusing device is arranged to cause dielectric heating, or an induction heating and fusing device is arranged to cause induction heating. As a result, as shown in FIG. 5A, the waterproof sheet 1 and the surface side resin layer 32 in the waterproof sheet collecting jig 3 are bonded or melted to be integrated, and both 1, 3 are joined in a watertight manner. Is done. As a result, the waterproof sheet collecting jig 3 exhibits the same bonding function as the sheet bonding plate 2.

  Here, in the present embodiment, the waterproof sheet collecting jig 3 can also be used as the sheet bonding plate 2 for fixing the waterproof sheet 1 to the structure M, so that the number of members does not increase. Waterproof construction work can be performed efficiently and smoothly.

  Next, the deterioration diagnosis of the waterproof sheet 1 will be described.

  When a predetermined number of years have passed since the construction of the waterproof sheet 1, in order for the inspection worker to collect a deterioration diagnosis sample from the waterproof sheet 1 shown in FIG. 5A on the surface side of the waterproof sheet 1, FIG. As shown in (B), a portion substantially corresponding to the hole 3a of the waterproof sheet collecting jig 3 is cut out.

  The size of the sample is a size necessary for diagnosis, and may be a size of, for example, 200 mm × 200 mm corresponding to the size of the opening 3a. This sample is subjected to a predetermined deterioration test.

  The inspection operator collects a sample for diagnosing deterioration of the waterproof sheet 1, and then performs post-processing to cover the hole 11 after the cutting with the waterproof sheet 10 for repair as shown in FIG.

  The restoration waterproof sheet 10 only needs to have an area (for example, about 700 mm × 700 mm) sufficiently larger than the area of the hole 11 after the cut-out, and is selected from the same quality as the existing waterproof sheet 1.

  The restoration waterproof sheet 10 covers the hole 11 after the cut out from the top of the waterproof sheet 1, and in this state, the peripheral portion of the restoration waterproof sheet 10 and the existing waterproof sheet 1 are subjected to the above-described solvent welding, hot air welding, Bonding is performed by adhesive welding (bonding), dielectric heating means or induction heating fusion means.

  At the time of collecting the deterioration diagnosis sample of the waterproof sheet 1, the inspection operator uses the information on the position of the waterproof sheet collecting jig 3 to check the location where the sample is cut from the existing waterproof sheet 1. It can be grasped immediately.

  And, since the waterproof part collecting jig 3 can be used as a guide and the collection part can be cut out without fail, and the inner edge of the opening 3a in the waterproof sheet collecting jig 3 can be used as a guide, it can be quickly and appropriately You can get a size one.

  Further, even if a dent is formed in the inner periphery of the cut hole 11 at the time of sampling due to the cutting work of the inspection operator, and a crack is generated from the dent, the waterproof sheet collecting jig is used. 3 and the existing waterproof sheet 1 are joined, the crack is stopped at the joined portion and does not spread further, so that the possibility of water leakage can be eliminated.

  The area of the opening 3a of the waterproof sheet collecting jig 3 may be as large as an appropriate amount of a deterioration diagnosis sample can be collected, and specifically, it should be set to 25 cm 2 or more. Considering workability in particular, the opening 3a is preferably a rectangular shape having a size of about 250 mm × 250 mm.

  Needless to say, the planar shape of the waterproof sheet collecting jig 3 is not limited to a square shape as in this example, and an arbitrary shape such as a polygonal shape or a circular shape can be selected.

  On the other hand, in the present embodiment, as shown in FIG. 6, the repairable waterproof sheet 10 is disposed so as to close the hole 11 after being cut from the lower side of the waterproof sheet 1, and the lower surface side (back surface) of the waterproof sheet 1. It is also possible to join the peripheral portion of the hole 11 on the side) using the above-mentioned melt-bonding means. That is, since the waterproof sheet 1 is less deteriorated with time on the lower surface side than the upper surface side (front surface side), the repair waterproof sheet 10 is joined to the repair waterproof sheet 10 on the sheet rear surface side with less deterioration. Can be bonded to the waterproof sheet 1 in a stable state.

  When the waterproof sheet collecting jig 3 is fixed, as shown in FIG. 7A, a sample collecting waterproof sheet 6 of the same quality as the waterproof sheet 1 is joined to the upper surface of the waterproof sheet collecting jig 3. These are integrally fixed to the waterproof construction surface Ma of the structure main body M, while the waterproof sheet 1 is previously provided with a sampling hole 12 corresponding to the opening 3a of the waterproof sheet collecting jig 3. You may make it leave.

  When a sample for deterioration diagnosis of the waterproof sheet 1 is collected, as shown in FIG. 7B, a part of the waterproof sheet for sample collection 6 is cut out to obtain a sample for deterioration diagnosis. After the sample for deterioration diagnosis is collected, the sampling hole 12 in the waterproof sheet 1 may be covered with the waterproof sheet for repair 10 as shown in FIG.

  In this case, since the collection hole 12 is previously opened in the waterproof sheet 1, the appropriate range can be easily cut out from the waterproof sheet 1 when the deterioration diagnosis sample is collected.

  Further, as shown in FIG. 8, a watertight member 7 may be interposed between the waterproof sheet collecting jig 3 and the waterproof surface Ma of the structure M. As the watertight member, a packing member such as butyl tape or a sealing member such as a silicone caulking agent can be suitably employed. Here, the packing member refers to a filler having rubber elasticity such as butyl rubber, silicone rubber, ethylene propylene diene rubber (EPDM), etc. In addition to the butyl tape, an EPDM foam sheet (trade name: EPT SEALER) is suitable. Can be used.

  In that case, for example, even if water leaks from the interface between the repair waterproof sheet 10 and the existing waterproof sheet 1, the water leak is stopped in the opening 3 a of the waterproof sheet collecting jig 3 and the structure body M The watertight member 7 can surely prevent water leakage to the waterproof construction surface Ma.

  9 and 10 are a perspective view and a cross-sectional view, respectively, showing a waterproof sheet laying structure in which the waterproof sheet deterioration diagnosis method according to the second embodiment of the present invention is employed. As shown in both figures, the first waterproof sheet 1a is laid on the waterproof construction surface Ma of the structure body M. A plurality of sheet fixing plates 20 are arranged at predetermined intervals along the edge of the first waterproof sheet 1a, and the fixing member 4 is passed through each fixing plate 20 and the first waterproof sheet 1a, thereby the structure body. Fix to M. . Thereby, the edge part of the 1st waterproof sheet 1a is fixed by the sheet | seat fixing plate 20 in the state pressed on the construction surface Ma.

  In addition, in this embodiment, since the sheet fixing plate 20 does not join a waterproof sheet to the upper surface as will be described later, the sheet fixing plate 20 is also configured by a metal single layer plate such as a stainless plate in which a resin layer is not provided on the front surface or the back surface. be able to.

  On the other hand, the waterproof sheet collecting jig 3 is disposed at a predetermined position on the waterproof construction surface Ma and fixed in the same manner as described above via the fixing member 5.

  Subsequently, the second waterproof sheet 1b is waterproofed so as to cover the waterproof sheet collecting jig 3 and the sheet fixing plate 20 while overlapping the edge of the second waterproof sheet 1b along the edge of the first waterproof sheet 1a. It arrange | positions on the surface Ma.

  Thereafter, the second waterproof sheet 1b and the waterproof sheet collecting jig 3 are welded by the same welding process as described above, and the edges of the superimposed waterproof sheets 1a and 1b as shown in the region marked with X in FIG. The parts are joined by a welding process such as solvent welding, hot air welding, adhesive welding (adhesion), dielectric heating means, induction heating fusion means, or the like.

  In the present embodiment, the second waterproof sheet 1b and the sheet fixing plate 20 are not joined, but the second waterproof sheet 1b and the sheet fixing plate 20 do not necessarily need to be in a non-joined state, and are joined. May be.

  Since other configurations are the same as those of the first embodiment, the same portions are denoted by the same reference numerals, and redundant description is omitted.

  As described above, in the present embodiment, the edge of the lower (first) waterproof sheet 1a is pressed and fixed by the sheet fixing plate 20, and is fixed to the edge of the first waterproof sheet 1a in the fixed position. The edge of the second waterproof sheet 1b can be welded. For this reason, the welding process of sheet | seat edge parts can be performed smoothly, and construction efficiency can be improved.

  In this embodiment, since the waterproof sheet is mechanically fixed to the building body M using the sheet fixing plate 20, the waterproof sheet is made of an olefin resin or the like that is difficult to be fixed to the sheet bonding plate. When comprised, it can employ | adopt suitably.

  In the second embodiment as well, the waterproof sheet collecting jig 3 can be used as the sheet fixing plate 20. That is, the waterproof sheet collecting jig 3 is fixed in place of the sheet fixing plate 20 at any fixing position of the plurality of sheet fixing plates 20 arranged along the edge of the first waterproof sheet 1a. Needless to say, the waterproof sheet collecting jig 3 and the second waterproof sheet 1b are bonded by the above-described welding process.

  Needless to say, in the present embodiment, the waterproof sheet collecting jig 3 may be fixed between the first waterproof sheet 1a and the building body M.

It is a disassembled perspective view which shows the laying structure of the waterproof sheet by which the deterioration diagnosis method of the waterproof sheet concerning 1st Embodiment of this invention is employ | adopted. It is sectional drawing which shows the laying structure of the waterproof sheet of 1st Embodiment. It is sectional drawing which shows the sheet | seat joining board installed at the time of laying construction of the waterproof sheet of 1st Embodiment. It is sectional drawing which shows the jig | tool for the waterproof sheet collection | recovery installed at the time of laying construction of the waterproof sheet of 1st Embodiment, and being used at the time of the deterioration diagnosis of a waterproof sheet. It is sectional drawing which shows the structure around the waterproof sheet collection jig | tool of 1st Embodiment for every degradation diagnostic work procedure. It is sectional drawing which shows the 1st deformation | transformation structure of the jig | tool for waterproof sheet collection | recovery periphery. It is sectional drawing which shows the 2nd deformation structure of the jig | tool for waterproof sheet collection | recovery for every deterioration diagnostic work procedure. It is sectional drawing which shows the 3rd deformation structure around the jig | tool for waterproof sheet collection. It is a disassembled perspective view which shows the laying structure of the waterproof sheet by which the deterioration diagnosis method of the waterproof sheet concerning 2nd Embodiment of this invention is employ | adopted. It is sectional drawing which shows the laying structure of the waterproof sheet of 2nd Embodiment.

Explanation of symbols

1, 6, 1a, 1b ... waterproof sheet 2 ... sheet bonding plate (sheet fixing plate)
DESCRIPTION OF SYMBOLS 20 ... Sheet fixing plate 3 ... Waterproof sheet collection jig 3a ... Opening of waterproof sheet collection jig 7 ... Packing member 10 ... Repair waterproof sheet 11 ... Hole after cutting 21 ... Rigid substrate 22, 32 ... Resin layer (Sheet bonding layer)
31 ... Jig substrate M ... Structure body Ma ... Waterproof construction surface of the structure body

Claims (8)

Applied to a waterproof sheet laying structure in which a waterproof sheet is laid in a state where the waterproof sheet is partially fixed by a sheet fixing plate on a waterproof construction surface of the structure body, and the existing waterproof sheet is deteriorated after a predetermined period. In the deterioration diagnosis method of the waterproof sheet to be diagnosed,
Prepare in advance a planar annular waterproof sheet collecting jig provided with a sheet bonding layer on at least the surface of a rigid jig substrate,
In laying the waterproof sheet, fixing the waterproof sheet collecting jig to the waterproof construction surface, joining the jig and the waterproof sheet,
At the time of the waterproof sheet deterioration diagnosis, a portion of the waterproof sheet corresponding to the annular opening of the waterproof sheet collecting jig is cut out to collect a sample for waterproof sheet deterioration diagnosis,
Next, the hole after the waterproof sheet is cut off is closed with a repairing waterproof sheet, and the periphery of the repairing waterproof sheet is joined to an existing waterproof sheet in a region outside the hole. Deterioration diagnosis method of When a part of the waterproof sheet is cut out to collect a sample for diagnosing the deterioration of the waterproof sheet, interposed between the waterproofed surface of the structure body and the waterproof sheet laid on the waterproofed surface. It is a jig for collecting a waterproof sheet used as a cutting guide,
A waterproof sheet collecting jig, comprising: a planar annular resin laminate having at least a surface of a rigid jig substrate covered with a resin layer and having an opening in the center.   The waterproof sheet collecting jig according to claim 2, wherein an opening area of the opening is set to 25 cm 2 or more. In the laying structure of the waterproof sheet laid in a state where the waterproof sheet is partially fixed by the sheet fixing plate on the waterproof construction surface of the structure body,
In addition to fixing an annular waterproof sheet collecting jig used as a cutting guide when a part of the waterproof sheet is cut out and a sample for deterioration diagnosis is collected on the waterproof construction surface of the structure body, the waterproof sheet A waterproof sheet laying structure, wherein an outer peripheral portion of a sampling jig and the waterproof sheet are joined.   The waterproof sheet laying structure according to claim 4, wherein a watertight member is interposed between the waterproof sheet collecting jig and a waterproof construction surface of the structure body. While the sheet fixing plate is arranged and fixed on the waterproof construction surface, the corresponding parts of the waterproof sheet are joined to the surface of each sheet fixing plate, respectively,
The waterproof sheet laying structure according to claim 4 or 5, wherein the waterproof sheet collecting jig is fixed to any one of the fixing points of the sheet fixing plate instead of the sheet fixing plate. The waterproof sheet comprises first and second waterproof sheets,
The edge of the first waterproof sheet is fixed to the waterproof construction surface by the sheet fixing plate, and the edge of the second waterproof sheet is overlapped and joined to the edge of the first waterproof sheet. The laying structure of the waterproof sheet according to claim 4 or 5. A plurality of the sheet fixing plates are fixed at intervals along the edge of the first waterproof sheet,
The waterproof sheet laying structure according to claim 7, wherein the waterproof sheet collecting jig is fixed to any one of the fixing points of the sheet fixing plate instead of the sheet fixing plate.

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