JP2010105667A - Waterproof sheet laying structure and sheet joint member for laying waterproof sheet - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To ensure waterproofness and workability and, at the same time, to prevent a waterproof sheet from being damaged by a fixing device even if a heat insulation material or suchlike is deformed by, for example, liquid pressure. <P>SOLUTION: The waterproof sheet laying structure 10 includes: a sheet joining member 14 fixed to the housing 12 of the structure by a fixing device 20; and a waterproof sheet 16 laid on the structure jointed to the sheet joining member 14. The sheet joint member 14 includes: a joint member body 22 having a joint face 22a to which the waterproof sheet 16 is joined, and a recess portion 22b formed so as to recede from the joint face 22a and used for the fixing device 20 to be passed through it; and a covering presser plate 24 installed in the recess 22b and covering the head 20a of the fixing device 20. The surface 24a of the presser plate 24, which is on the waterproof sheet 16 side, is not welded by the waterproof sheet 16 by a solvent used to weld the waterproof sheet 16 to the joint face 22a. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a waterproof sheet construction structure in which a waterproof sheet is laid on an inner wall surface of a liquid tank such as a heat storage tank via a sheet joining member, and an improvement of a sheet joining member that can be used for such a construction structure. In particular, the present invention relates to preventing damage to a waterproof sheet.

  For example, in the construction of waterproof sheets for liquid tanks such as heat storage tanks that store hot and cold water constructed in office buildings, etc., heat insulating materials such as heat insulating panels are arranged on the walls of the enclosure such as concrete. A sheet joining member made of a steel plate or the like having a strip shape or a disk shape on top of which is coated with a synthetic resin is installed, and a waterproof sheet is laid on these sheet joining members to obtain a required sheet joining member. In some cases, a so-called insulating method is used in which a waterproof sheet is welded with a solvent and bonded (see, for example, Patent Document 1).

  In this construction method, as shown in FIG. 5, the sheet joining member 14 is fixed to the housing 12 by a fixing tool 20 such as a screw or a nail (see, for example, Patent Document 2). In the case of such a deep liquid tank, as shown in FIG. 5, the heat insulating material 18 is compressed and deformed by water pressure, and as a result, the waterproof sheet 16 sinks and is fixed to the housing 12. The head 20a of the fixture 20 protrudes relatively above the sheet joining member 14, and the waterproof sheet 16 may be damaged by the protruding head 20a of the fixture 20.

  In order to solve this problem, as shown in FIGS. 6 and 7, a pressing plate 24 is installed so as to cover the head 20 a of the fixture 20 in the sheet joining member 14, and is fixed by the pressing plate 24. It is conceivable to take measures to prevent the head 20a of the tool 20 from popping out or to receive the pressure of the head 20a to disperse the stress applied to the waterproof sheet 16 (see, for example, “engagement plate” in Patent Document 3). ).

  However, in this case, first, when the presser plate 24 is joined to the waterproof sheet 16, the presser plate 24 is displaced when the presser plate 24 is relatively displaced together with the head 20 a of the fixture 20. Since the waterproof sheet 16 is also pulled and tensioned, the waterproof sheet 16 may be deformed or damaged depending on the angle to which the pressure is applied and the shape, size, and material of the pressing plate 24. . In this case, in the sheet bonding member 14, it is considered that the waterproof sheet 16 is welded to the sheet bonding member 14 except for a portion corresponding to the pressing plate 24, but the pressing plate installed on the sheet bonding member 14. It is very troublesome to perform the welding work while avoiding only the 24 portion, and another problem occurs that significantly reduces the efficiency and workability of the laying work of the waterproof sheet 16.

  Second, when the presser plate 24 is installed in this way, a step is generated between the sheet joining member 14 and the presser plate 24 by the thickness of the presser plate 24 as shown in FIG. As a result, there is a possibility that another problem that the waterproofness is lowered may occur. Specifically, in the insulation method using the sheet bonding member 14, when the waterproof sheet 16 is laid, the waterproof sheet 16 is laid so as to overlap the sheet bonding member 14 and the holding plate 24, and the waterproof sheet 16 Among them, a solvent is applied to a portion overlapping the sheet bonding member 14 and the pressing plate 24 and welded with a synthetic resin coated on the surface of the sheet bonding member 14 or the like, and the enforcement worker manually applies to the overlapping portion. Since the pressure is applied and the joining work is performed, if the pressure by the hand pressing or the like is not sufficient, as shown in FIG. 6, the unwelded portion is located near the step between the sheet joining member 14 and the pressing plate 24. N (see FIG. 6) is generated, and the peeling of the waterproof sheet 16 proceeds from there, which may affect the waterproof property. Moreover, the state in which only the presser plate 24 is raised due to the step is not preferable from the viewpoint of securing a good appearance after construction. This problem similarly occurs in the step formed between the sheet joining member 14 including the pressing plate 24 and the heat insulating material 18 in the prior art shown in FIG.

JP 2001-040718 A JP 2005-146774 A JP-A-9-112971

  In view of the above problems, the problem to be solved by the present invention is that the waterproof sheet is damaged by the fixture even when the heat insulating material or the like is deformed by hydraulic pressure or the like while ensuring waterproofness and workability. It is providing the waterproof sheet construction structure which can suppress that, and the waterproof sheet joining member which can be used for such a structure.

(1. Waterproof sheet construction structure)
As a first means for solving the above-described problems, the present invention provides a sheet joining member that is fixedly installed on a structural body with a fixture, and a sheet joining member that is joined to the sheet joining member and laid on the structure. In the waterproof sheet construction structure provided with the waterproof sheet, the sheet joining member has a joining surface to which the waterproof sheet is joined and a recessed member formed to be recessed from the joining surface and through which the fixture passes. And a pressing plate that is installed in the recessed portion and covers the head of the fixture, and the surface of the pressing plate on the waterproof sheet side is not welded to the waterproof sheet even by a solvent for welding the waterproof sheet to the joint surface. A characteristic waterproof sheet construction structure is provided.

  As a second means for solving the above-mentioned problems, the present invention provides a waterproof sheet construction structure characterized in that, in the first solving means, the sheet joining member is fixed to the housing via a heat insulating material. Is to provide.

  The present invention provides, as a third means for solving the above problems, a waterproof sheet construction structure characterized in that the structure is a liquid tank in the first or second solution means. To do.

  According to the present invention, as a fourth means for solving the above-described problems, in any one of the first to third solving means, the pressing plate is formed of a metal material that is not welded to a solvent. A characteristic waterproof sheet construction structure is provided.

  According to the present invention, as a fifth means for solving the above-described problems, in any one of the first to fourth solving means, the waterproof sheet side surface of the pressing plate is formed of a material that does not dissolve in the solvent. It is intended to provide a waterproof sheet construction structure characterized by being covered with a covering material.

  According to the present invention, as a sixth means for solving the above-described problem, in any one of the first to fifth solving means, at least a corner of the pressing plate on the waterproof sheet side is processed into a curved surface. The waterproof sheet construction structure characterized by being provided is provided.

  According to the present invention, as a seventh means for solving the above-described problems, in any one of the first to sixth solving means, the pressing plate has a surface area larger than that of the head of the fixture. A waterproof sheet construction structure is provided.

  The present invention provides, as an eighth means for solving the above-described problems, in any one of the first to seventh solving means, wherein the pressing plate is formed to have a smaller diameter than the recessed portion. A waterproof sheet construction structure is provided.

  According to the present invention, as a ninth means for solving the above-described problem, in any one of the first to eighth solving means, the surface of the pressure plate on the waterproof sheet side is substantially the same as the joining surface of the joining member body. It is intended to provide a waterproof sheet construction structure characterized by being installed so as to be on the same surface.

  The present invention provides, as a tenth means for solving the above-mentioned problems, in any one of the first to ninth solving means, wherein the pressing plate has a recessed portion of the joining member main body with a sealing agent or an adhesive on the back surface. The waterproof sheet construction structure characterized by being temporarily fixed to is provided.

  According to the present invention, as an eleventh means for solving the above-described problems, in any one of the first to tenth solving means, the joining member body of the sheet joining member is embedded in a casing or a heat insulating material. The waterproof sheet construction structure characterized by being provided is provided.

  According to the present invention, as a twelfth means for solving the above-described problem, in any one of the first to eleventh solving means, the joining member body of the sheet joining member is formed in a plate shape or a disc shape. The waterproof sheet construction structure characterized by being provided is provided.

(2. Sheet joining member for waterproof sheet construction)
Moreover, this invention also provides the sheet | seat joining member which can be used for the waterproof sheet construction structure which is the said 1st thru | or 12th problem-solving means. Specifically, in the present invention, as a thirteenth means for solving the above-described problem, the structure is fixed to a housing of the structure with a fixing member and joined to a waterproof sheet laid on the structure. A sheet joining member for waterproof sheet construction, a joining member main body having a joining surface to which the waterproof sheet is joined and a recessed portion formed so as to be recessed from the joining surface and through which the fixture passes, and fixed to the recessed portion. A sheet for waterproof sheet construction, characterized in that the sheet on the waterproof sheet side of the retainer plate is not welded to the waterproof sheet even by a solvent for welding the waterproof sheet to the joint surface. A joining member is provided.

  According to the present invention, as a fourteenth means for solving the above problems, in the thirteenth solving means, the pressing plate is formed of a metal material that is not welded to a solvent. The sheet joining member for use is provided.

  According to the present invention, as a fifteenth means for solving the above-described problems, in the thirteenth or fourteenth solution means, the surface of the pressure plate on the waterproof sheet side is formed of a material that does not dissolve in a solvent. The present invention provides a sheet joining member for constructing a waterproof sheet, which is covered with a covering material.

  According to the present invention, as a sixteenth means for solving the above-described problem, in any one of the thirteenth to fifteenth solving means, at least a corner on the waterproof sheet side of the pressing plate is processed into a curved shape. The present invention provides a sheet joining member for constructing a waterproof sheet.

  The present invention provides, as a seventeenth means for solving the above-mentioned problems, in any one of the thirteenth to sixteenth solving means, wherein the pressing plate has a surface area larger than that of the head of the fixture. The sheet joining member for constructing a waterproof sheet is provided.

  The present invention provides, as an eighteenth means for solving the above problems, in any one of the thirteenth to seventeenth solving means, wherein the pressing plate is formed to have a smaller diameter than the recessed portion. The sheet joining member for waterproof sheet construction to be provided is provided.

  According to the present invention, as a nineteenth means for solving the above-described problems, in any one of the thirteenth to eighteenth solving means, the surface of the pressing plate on the waterproof sheet side is substantially the same as the joining surface of the joining member body. The present invention provides a sheet joining member for constructing a waterproof sheet, which is installed so as to be on the same surface.

  According to the present invention, as a twentieth means for solving the above-mentioned problems, in any one of the thirteenth to nineteenth solving means, the pressing plate has a recessed portion of the joining member main body with a sealing agent or an adhesive on the back surface. The sheet joining member for waterproof sheet construction characterized by being temporarily fixed to is provided.

  According to the present invention, as a twenty-first means for solving the above problems, in any one of the thirteenth to twentieth solving means, the joining member body of the sheet joining member is formed in a plate shape or a disc shape. The present invention provides a sheet joining member for constructing a waterproof sheet.

  According to the present invention, as described above, the surface of the pressing plate of the sheet bonding member is formed so as not to be welded to the waterproof sheet even by the solvent for welding the waterproof sheet to the bonding surface. In order to weld and bond to the sheet bonding member, a solvent is applied to a portion of the waterproof sheet corresponding to the entire sheet bonding member including the holding plate, and the waterproof sheet is bonded to the sheet bonding member. Even when the head of the fixture urges the presser plate to be pushed up relatively due to deformation or the like, the presser plate is attached to the waterproof sheet within the range of the non-welded waterproof sheet on the presser plate. In contrast, since it is possible to provide a play that can be displaced, it is a case where the fixing tool tends to protrude relatively by hydraulic pressure or the like while ensuring good workability of laying the waterproof sheet. Because the pressure plate can be displaced so as to release the pressure from the fixing tool against the expansion and contraction of the waterproof sheet and disperse the stress, the waterproof sheet does not follow the pressure plate and does not expand and contract forcibly. There is an actual benefit that can suppress the breakage of the sheet.

  In addition, according to the present invention, as described above, at least the corners on the waterproof sheet side of the pressing plate are processed into a curved surface, so that stress is applied to the portion of the waterproof sheet that contacts the corners of the pressing plate. There is an actual benefit that can suppress concentration and breakage.

  Furthermore, according to the present invention, as described above, since the pressing plate has a larger surface area than the head of the fixture, the presser plate is more waterproof than the case where the head of the fixture directly pushes up the waterproof sheet. Since the applied stress can be dispersed, there is an advantage that damage to the waterproof sheet can be suppressed.

  In addition, according to the present invention, as described above, since the pressing plate is formed to have a smaller diameter than the recessed portion, the waterproof sheet is formed in the recessed portion even when pushed up relatively by the head of the fixture. There is an advantage that a space that can be displaced relative to the waterproof sheet can be secured, and the pressure applied to the waterproof sheet can be appropriately released by the play to prevent the waterproof sheet from being damaged.

  According to the present invention, as described above, since the back plate is temporarily fixed to the recessed portion of the joining member main body by the sealing agent or the adhesive, the pressure is applied when the waterproof sheet is joined to the sheet joining member. Can be positioned at an appropriate position even if the like is added. In particular, in this case, as described above, when the pressing plate is formed to have a smaller diameter than the recessed portion of the joining member body, the sealing agent Alternatively, even if the adhesive protrudes from the back surface to the side surface of the pressing plate, the protruding sealing agent or adhesive stops in the gap formed between the pressing plate and the inner peripheral surface of the recessed portion. And the like do not affect the welding operation of the waterproof sheet, and there is an advantage that an operation such as wiping off excess sealing agent is not required.

  According to the present invention, as described above, since the surface of the pressing plate is installed so as to be substantially flush with the bonding surface of the bonding member body, a step is generated between the pressing plate and the sheet bonding surface. Depending on the work, it is possible to prevent the occurrence of an unwelded part between the pressing plate and the sheet joining surface, and to ensure waterproofness, while at the same time ensuring a good appearance after laying. There are real benefits that can be made.

  In this case, in particular, as described above, when the joining member body of the sheet joining member is embedded in a housing or a heat insulating material, the recessed portion is formed to be recessed from the joining surface. In addition, the sheet bonding member itself does not swell from the heat insulating material such as the heat insulating panel, and it is possible to prevent the occurrence of an unwelded portion between the sheet bonding member and the heat insulating material or the casing, and even better. There is an actual benefit that can ensure a good appearance.

  The embodiment of the present invention will be described in detail with reference to the drawings. FIG. 1 shows a waterproof sheet construction structure 10 according to the present invention. As shown in FIG. A sheet joining member 14 installed on the housing 12 and a waterproof sheet 16 joined to the sheet joining member 14 and laid on the structure are provided.

  Examples of the structure include roofs of office buildings and the like, and liquid tanks such as heat storage tanks and pools for storing hot water and cold water constructed in office buildings and the like. It can be applied to structures that require waterproofness. In addition, as shown in the illustrated embodiment, particularly in the case of a structure that requires heat insulation such as a heat storage layer, as shown in FIG. 1, the sheet bonding member 14 is a synthetic resin foam. It is fixed to the housing 12 via a heat insulating material 18 such as a heat insulating panel formed from the like. That is, in this case, the sheet joining member 14 is installed on the heat insulating material 18.

  The shape and size of the sheet joining member 14 are not particularly limited, and can be set to an arbitrary shape and size according to the installation location. For example, as shown in FIG. 1, when it is installed in a corner or a side wall of a structure such as a liquid tank, it is formed in a plate shape such as a substantially L shape or a belt shape, In the case where it is installed on the casing 1 or the like other than the corners of the bottom surface, it can be formed in a disk shape having a circular shape or the like and scattered on the casing 12. Further, as shown in FIGS. 2 and 4, the sheet joining member 14 is installed by fixing the housing 12 of the structure by a fixture 20 having a head 20 a for driving or screwing a nail or a bolt. The

  As shown in FIGS. 1 to 4, the sheet joining member 14 according to the present invention includes a joining member main body 22 and a holding plate for holding down the head 20 a of the fixture 20 that fixes the convenience member main body 22 to the housing 12. 24. As shown in FIGS. 2 and 3 in particular, the joining member main body 22 has a joining surface 22a to which the waterproof sheet 16 is joined, and a recessed portion 22b formed to be recessed from the joining surface 22a. .

  As shown in FIGS. 2 and 3, the recessed portion 22b is formed by further denting the bottom surface thereof, and a head storage portion 22c in which the head of the fixture 20 is stored, and the bottom surface of the head storage portion 22c. A fixing tool through hole 22d through which the flange of the fixing tool 20 passes is formed. The sheet joining member 14 penetrates the fixing tool 20 through the fixing tool through hole 22d, and drives the fixing tool 20 into the housing 12 until the head 20a of the fixing tool 20 is stored in the head storage portion 22c. It is fixedly attached to the housing 12 by screwing.

  Of the sheet bonding members 14, the bonding member main body 22 is bonded to the waterproof sheet 16 on the bonding surface 22 a. Specifically, a solvent is applied to a portion of the waterproof sheet 16 corresponding to the sheet bonding member 14, and the solvent is bonded to the bonding surface 22 a of the sheet bonding member 14 by this solvent. Secure on top.

  For this reason, the joining member main body 22 having the joining surface 22a welded to the waterproof sheet 16 is formed so as to be welded to the waterproof sheet 16 with a solvent. That is, the joining member main body 22 can be welded to the waterproof sheet 16 with a solvent, specifically, a synthetic resin plate, a synthetic resin-coated steel plate whose surface is coated with a synthetic resin using a steel plate as a core material, or the like. Can be formed. As the synthetic resin used for the bonding member main body 22, for example, a soft synthetic resin such as polyvinyl chloride resin, polyolefin resin, ethylene vinyl acetate copolymer, or synthetic rubber material can be selected. Of these, polyvinyl chloride resin is particularly preferable because it is excellent in solvent weldability and heat-fusibility.

  The recess 22b, the head storage portion 22c, and the fixture through hole 22d can be formed by pressing with a press molding machine or the like when the joining member body 22 is formed of a synthetic resin-coated steel plate. When the joining member main body 22 is formed as a synthetic resin plate, it can be formed by an appropriate resin processing method such as injection molding. As a result, the formation process of the recessed portion 22b and the like is facilitated, and the cost can be reduced.

  On the other hand, as shown in FIGS. 2 and 3, the pressing plate 24 is installed in the recessed portion 22a of the joining member 22 so as to cover the head portion 20a of the fixture 20 stored in the head storage portion 22c. Therefore, it is desirable to form the pressing plate 24 in a shape corresponding to the recessed portion 22a. Specifically, there are no particular limitations on the outer shape of the recessed portions 22b and the presser plate 24 corresponding to the recessed portions 22b, and an appropriate shape such as a circle, an ellipse, a rectangle, or a polygon can be used. And as shown in FIG. 4, it is preferable to form circularly or elliptically. This is because the waterproof sheet 16 may be damaged when the shape has corners such as a quadrangle. Also, the thickness of the pressing plate 24 is not particularly limited. However, from the viewpoint of securing a certain level of strength, it is preferable that the thickness be at least 1 mm.

  In the present invention, the pressing plate 24 is formed so that the surface 24a on the waterproof sheet 16 side is not welded to the waterproof sheet 16 even by a solvent for welding the waterproof sheet 16 to the joint surface 22a. For this reason, even if the fixing device 20 is about to protrude relatively due to hydraulic pressure or the like, the pressure plate 24 releases the pressure by the head portion 20a of the fixing device 20 against the expansion and contraction of the waterproof sheet 16, thereby causing stress. Unlike the case where the presser plate 24 is joined to the waterproof sheet 16, the waterproof sheet 16 does not follow the presser plate 24 and cause excessive stretching, and the waterproof sheet 16 is damaged. Can be suppressed.

  In particular, in this case, in order to weld and bond the waterproof sheet 16 to the sheet bonding member 14, a solvent is applied to a portion of the waterproof sheet 16 that corresponds to the entire sheet bonding member 14 including the pressing plate 24. Even if the head 20a of the fixture 20 is urged so as to relatively push up the pressing plate 24 due to deformation of the heat insulating material 18 Since the presser plate 24 can be provided with a play in which the presser plate 24 can be displaced with respect to the waterproof sheet 16 within the range of the waterproof sheet 16 not welded on the presser plate 24, the waterproof sheet 16 can be laid as well as the conventional one. This is advantageous in that breakage of the waterproof sheet 16 can be suppressed while ensuring good workability.

  In this case, specifically, the pressing plate 24 can be dealt with by forming it from a metal material such as a steel plate that is not welded to a solvent and making its surface in a solid state. Examples of such a metal material include stainless steel in consideration of its corrosion resistance and the like.

  As another means, a material that does not dissolve at least the surface 24a of the presser plate 24 on the waterproof sheet 16 side after the presser plate 24 is formed of a metal or resin material, like the joining member main body 22. It is possible to cope with this by coating with a coating material formed from The covering material is not particularly limited as long as it is a material that does not dissolve in a solvent. Specifically, for example, a tape material such as a craft adhesive tape that may be used as a packaging material or the like can be used. . This kraft pressure-sensitive adhesive tape has a simple adhesive layer on the back side of general kraft paper, the back side adhesive does not penetrate on the front side, is not welded by the waterproof sheet 16 and a solvent and does not deteriorate (for example, It is a tape material formed by coating a solvent-free processing agent).

  In addition, it is preferable that at least the corner 24b on the waterproof sheet 16 side be chamfered into a curved surface. Thereby, it can suppress that stress concentrates on the part which contact | abuts the corner part 24b of the pressing board 24 among the waterproof sheets 16, and breaks.

  Further, as shown in FIGS. 2 and 4, the pressing plate 24 is formed to have a larger surface area than the head 20 of the fixture 20. As a result, the stress applied to the waterproof sheet 16 can be dispersed as compared with the case where the head 20a of the fixture 20 directly pushes up the waterproof sheet 16 as shown in FIG. be able to.

  On the other hand, as shown in FIGS. 2 and 3, the pressing plate 24 is formed with a smaller diameter than the recessed portion 22 b of the joining member main body 22. Thereby, even when the presser plate 24 is relatively pushed up by the head 20a of the fixture 20, a space that can be displaced with respect to the waterproof sheet 16 within the recessed portion 20b can be secured, and the play thereof can be ensured. Thus, the pressure applied to the waterproof sheet 16 can be appropriately released, and damage to the waterproof sheet 16 can be suppressed. In addition, by forming the pressing plate 24 with a smaller diameter than the recessed portion 22b of the joining member main body 22 in this way, the pressing plate 24 can be reliably stored in the recessed portion 22b. Even if the pressing plate 24 moves slightly in the recessed portion 22c at the time of welding to the joining member 14, the displacement can be determined by the pressing pressure at the time of welding or the feeling of the hand. It is also possible to suppress sticking at an angle by correcting the above. In particular, in this case, since the holding plate 24 has a smaller diameter than the recessed portion 22c, that is, a gap is provided in the side surface direction of the holding plate 24, not in the depth direction of the recessed portion 22c, as described later, The pressing plate 24 can be accommodated in the recessed portion 22c while being installed so that the surface 24 on the waterproof sheet 16 side is substantially flush with the bonding surface 22a of the bonding member main body 22.

  Considering the area ratio of the fixture 20 to the head portion 20a and the relationship with the recessed portion 22b, the size of the pressing plate 24 is preferably about 10 mm to 50 mm in diameter. In addition, the pressure of the head 20a of the fixture 20 can be received, and the protrusion of the head 20a of the fixture 20 and the breakage of the waterproof sheet 16 can be appropriately suppressed, and good handleability can also be ensured.

  Further, it is desirable that the pressing plate 24 is temporarily fixed by applying a sealing agent or an adhesive to the back surface thereof and pressing the pressing plate 24 against the recessed portion 22 c of the joining member main body 22. Thereby, even when pressure or the like is applied when the waterproof sheet 16 is bonded to the sheet bonding member 14, the pressing plate 24 can be positioned at an appropriate position. In this case, as described above, since the pressing plate 24 is formed with a smaller diameter than the recessed portion 22c, even if the sealing agent or the adhesive protrudes from the back surface side of the pressing plate 24, the protruding sealing agent or Since the adhesive stops in the gap formed between the pressing plate 24 and the inner peripheral surface of the recessed portion 22c, the protruding sealing agent or the like does not affect the welding operation of the waterproof sheet 16, and the surplus It is also advantageous in that an operation such as wiping off the sealing agent is not required. Specifically, in relation to the recessed portion 22b, the diameter of the pressing plate 24 is set to be about 1 mm to 2 mm smaller than the diameter of the recessed portion 22b (the diameter of the recessed portion 22b is 1 mm to the diameter of the pressing plate 24). It is preferable to set it larger by about 2 mm.

  In this case, depending on the sealing agent, the pressing plate 24 cannot be completely fixed to the joining member main body 22, and the pressing plate 24 is removed from the joining member main body 22 by the relative protrusion of the head 20 a of the fixture 20. However, even in such a case, the pressing plate 24 itself receives pressure from the waterproof sheet 16 side by liquid pressure or the like. Since the pressing plate 24 is reliably present between the head 20a and the waterproof sheet 16, the waterproof sheet 16 is prevented from being damaged. Further, if the sealing agent is filled, it is possible to ensure good workability without requiring much labor for the work of installing the presser plate 24. In addition, as such a sealing agent, what melt | dissolved vinyl chloride resin with the solvent etc. can be used, for example.

  On the other hand, when an adhesive is used, the pressing plate 24 can be integrated with the joining member main body 22 to a certain degree more firmly than the sealing agent, and thereby, the fixture 20 by pressure from the waterproof sheet 16 side. The relative protrusion of the head 20a from the sheet joining surface 22a can be suppressed. In this case, the entire sheet joining member 14 is urged in a direction pushed up by the head 20a of the fixture 20, but the head 20a of the fixture 20 locally applies pressure to the waterproof sheet 16. Therefore, damage to the waterproof sheet 16 can be sufficiently suppressed. Even if the pressing plate 24 is pushed up away from the joining member main body 22 by an adhesive, the waterproof sheet 16 can be prevented from being damaged by the play of the pressing plate 24 as in the case of the sealing agent. . As such an adhesive, an epoxy resin-based adhesive can be used.

  Furthermore, in the case of performing the filling reinforcement to such an extent that sealing is performed with the above-described sealing agent or adhesive, a sealing agent or an adhesive is also applied to the back surface (the surface on the head storage portion 22c side) of the pressing plate 24. It is preferable that the back surface of the pressing plate 24 and the bottom surface of the recessed portion 22b are in close contact with each other in order to appropriately perform the above positioning and the like. However, the space between the top surface of the head 20a of the fixing tool 20 and the back surface of the pressing plate 24 is not fixed, and the head 20a of the fixing device 20 is in a free state in which it can be displaced with respect to the pressing plate 24. It is desirable to ensure a pressure escape.

  Further, in the present invention, the surface 24 on the waterproof sheet 16 side of the presser plate 24 is, as shown in FIG. 2, the joining surface 22 a of the joining member main body 22 in a normal state (a state in which no hydraulic pressure is applied). It is installed so that it may become the substantially same surface. For this reason, even if the pressing plate 24 is used, there is no step between the pressing plate 24 and the joining surface 22a as shown in FIG. 2, and depending on the work, the pressing plate 24 and the joining surface 22a It is possible to prevent the occurrence of an unwelded portion N (see FIG. 6) between the two and ensure waterproofness, and at the same time, it is possible to ensure a good appearance after laying.

  Specifically, in the present invention, as shown in FIGS. 2 and 3, as described above, the bottom surface of the recessed portion 22b is further recessed to form the head accommodating portion 22c, and the recessed portion 22b By setting the depth substantially the same as the thickness of the presser plate 24, even if the presser plate 24 is installed on the head 20a of the fixture 20, the presser plate 24 is on the joint surface 22a by the thickness. It corresponds so that it may not protrude and becomes substantially the same surface.

  Furthermore, in the present invention, it is preferable that the joining member main body 22 of the sheet joining member 14 is embedded and installed in the housing 12 or the heat insulating material 18. Thereby, coupled with the fact that the recessed portion 22b is formed to be recessed from the joining surface 22a, the sheet joining member 14 itself does not rise from the heat insulating material 18 such as a heat insulating panel, and the sheet joining member 14 and It is possible to prevent the unwelded portion N from being generated between the heat insulating material 18 and the housing 12 and the like, and to secure a better appearance.

  Specifically, when the joining member main body 22 is fixed to the housing 12 via the heat insulating material 18 or the like by driving or screwing the fixing tool 20, the joining member main body 22 slightly crushes the heat insulating material 18, and the heat insulating material 18. It is possible to cope by installing it so as to be pushed in. However, it is sufficient that the object on which the joining member main body 22 is directly mounted, such as a heat storage layer, can be elastically deformed like a heat insulating material such as a heat insulating panel. It is not always necessary to embed even when it is directly installed on the machine 12.

  The waterproof sheet 16 can be used without particular limitation as long as it is a waterproof resin sheet. For example, a polyvinyl chloride resin, a polyolefin-based resin, A soft synthetic resin such as an ethylene vinyl acetate copolymer or a synthetic rubber-based material can be used. Of these, polyvinyl chloride resin is particularly suitable for solvent welding and heat fusion. It is suitable because it is excellent in wearability. The material of the joining surface 22a of the sheet joining member 14 is preferably set to the same material as that of the waterproof sheet 16 in terms of performing welding joining with a solvent.

  Note that the joining of the waterproof sheet 16 and the sheet joining member 14 is not necessarily limited to the welding joining using the above-mentioned solvent, and heat fusion that melts and fuses the synthetic resin by heating as necessary. The method of wearing can also be adopted. Moreover, in the waterproof sheet construction structure 10 of the present invention, the sheet bonding member 14 does not necessarily need to bond all the installed sheet bonding members 14 to the waterproof sheet 16, and may be, for example, a rooftop according to the installation location. It is preferable to join to all the sheet joining members 14 at a place where the waterproof sheet 16 may float due to wind pressure or the like, but at a place where the waterproof sheet 16 is pressed against the housing 12 by the fluid pressure, such as a liquid tank. If the sheet bonding member 14 is bonded only at a desired portion such as a corner, the disc-shaped sheet bonding member 14 installed on the other flat surface is simply laid with the waterproof sheet 16 thereon. It can also respond. In this case, the sheet joining member 14 mainly plays a role of fixing the heat insulating material 18 to the housing 12 via the fixing tool 20, but even in that case, of course, the fixing tool 20 by hydraulic pressure is used. It is effective against the relative protrusion of the head 20a of the head and remains meaningful in the present invention.

  In addition, the present invention is not limited to the location where the hydraulic pressure is applied in the heat storage tank as described above, but also on the rooftop or the like, the negative pressure due to wind pressure acting on the waterproof sheet 16 over a long period of time or the influence of repeated behavior. In addition, when the heat insulating material 18 is directly below, the sheet joining member 14 may be displaced or settled due to a dimensional change due to use under long-term outdoor conditions, and the head of the fixture 20 in that case It is also effective for preventing damage to the waterproof sheet 16 by 20a.

  The present invention can be widely applied to places where waterproofness is required, such as a heat storage tank installed on the roof of an office building or an office building.

It is a schematic perspective view of the waterproof sheet construction structure of this invention. It is a longitudinal cross-sectional view of the part to which the sheet | seat joining member in FIG. 1 was fixed. It is sectional drawing of the sheet | seat joining member of this invention. It is a schematic perspective view of the state which fixes the sheet | seat joining member of this invention to a housing. It is sectional drawing of the conventional waterproof sheet construction structure. It is sectional drawing of the other conventional waterproof sheet construction structure. It is sectional drawing of the other conventional waterproof sheet construction structure.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Waterproof sheet construction structure 12 Housing 14 Sheet | seat joining member 16 Waterproof sheet 18 Heat insulating material 20 Fixing tool 20a Fixing head part 22 Joining member main body 22a Joining surface 22b Recessed part 22c Head part accommodating part 22d Fixing tool through-hole 24 Holding plate 24a Surface of the pressure plate on the waterproof sheet side 24b Corner portion of the pressure plate 24c Side surface of the pressure plate

Claims (21)

In the waterproof sheet construction structure, comprising: a sheet joining member that is fixed and installed on a housing of a structure with a fixture; and a waterproof sheet that is joined to the sheet joining member and laid on the structure, the sheet joining The member includes a joining member main body having a joining surface to which the waterproof sheet is joined and a recessed portion that is recessed from the joining surface and through which the fixing tool passes, and a head portion of the fixing tool that is installed in the recessed portion. A waterproof sheet construction structure, wherein the waterproof sheet side surface of the retainer plate is not welded to the waterproof sheet even by a solvent for welding the waterproof sheet to the joint surface. . It is a waterproof sheet construction structure described in Claim 1, Comprising: The said sheet | seat joining member is fixed to the said housing through a heat insulating material, The waterproof sheet construction structure characterized by the above-mentioned. The waterproof sheet construction structure according to claim 1 or 2, wherein the structure is a liquid tank. 4. The waterproof sheet construction structure according to claim 1, wherein the pressing plate is formed of a metal material that is not welded to the solvent. 5. 5. The waterproof sheet construction structure according to claim 1, wherein a surface of the presser plate on the waterproof sheet side is covered with a covering material formed from a material that does not dissolve in the solvent. Waterproof sheet construction structure characterized by having The waterproof sheet construction structure according to any one of claims 1 to 5, wherein at least a corner portion on the waterproof sheet side of the pressing plate is processed into a curved surface. Construction. The waterproof sheet construction structure according to any one of claims 1 to 6, wherein the pressing plate has a larger surface area than a head of the fixture. The waterproof sheet construction structure according to any one of claims 1 to 7, wherein the pressing plate is formed to have a smaller diameter than the recessed portion. 9. The waterproof sheet construction structure according to claim 1, wherein the waterproof sheet side surface of the presser plate is installed so as to be substantially flush with a bonding surface of the bonding member main body. Waterproof sheet construction structure characterized by being made. 10. The waterproof sheet construction structure according to claim 1, wherein a back surface of the pressing plate is temporarily fixed to a recessed portion of the joining member main body by a sealing agent or an adhesive. Features a waterproof sheet construction structure. 11. The waterproof sheet construction structure according to claim 1, wherein a joining member main body of the sheet joining member is embedded and installed in the housing or the heat insulating material. Waterproof sheet construction structure. The waterproof sheet construction structure according to any one of claims 1 to 11, wherein a joining member body of the sheet joining member is formed in a plate shape or a disk shape. Construction. A sheet joining member for waterproof sheet construction that is installed and fixed to a casing of a structure with a fixture, and is joined to a waterproof sheet laid on the structure, the joining surface to which the waterproof sheet is joined and the A joining member main body having a recessed portion that is recessed from the joining surface and through which the fixing tool passes, and a pressing plate that is installed in the recessed portion and covers the head of the fixing tool, the waterproofing of the pressing plate The sheet bonding member for waterproof sheet construction, wherein the surface on the sheet side is not welded to the waterproof sheet even by a solvent for welding the waterproof sheet to the bonding surface. 14. The waterproof sheet construction sheet joining member according to claim 13, wherein the pressing plate is formed of a metal material that is not welded to the solvent. 15. The waterproof sheet construction sheet joining member according to claim 13, wherein a surface of the pressure plate on the waterproof sheet side is formed of a coating material formed from a material that does not dissolve in the solvent. A sheet joining member for constructing a waterproof sheet, characterized by being coated. It is a sheet | seat joining member for waterproof sheet construction described in any one of Claim 13 thru | or 15, Comprising: The corner part by the side of the waterproof sheet of the said pressing board is processed into the curved surface shape, It is characterized by the above-mentioned. Sheet joining member for waterproof sheet construction. The waterproof sheet construction sheet joining member according to any one of claims 13 to 16, wherein the pressing plate has a surface area larger than a head of the fixture. Sheet joining member. The waterproof sheet construction sheet joining member according to any one of claims 13 to 17, wherein the pressing plate is formed to have a smaller diameter than the recessed portion. Sheet joining member. It is a sheet | seat joining member for waterproof sheet construction described in any one of Claim 13 thru | or 18, Comprising: The surface by the side of the said waterproof sheet of the said press board becomes a substantially flush surface with the joining surface of the said joining member main body. The sheet joining member for waterproof sheet construction characterized by being installed like this. 20. The waterproof sheet construction sheet joining member according to claim 13, wherein the back surface of the pressing plate is temporarily fixed to a recessed portion of the joining member body by a sealing agent or an adhesive. A sheet joining member for constructing a waterproof sheet. 21. The sheet joining member for waterproof sheet construction according to claim 13, wherein the joining member main body of the sheet joining member is formed in a plate shape or a disk shape. Sheet joining member for waterproof sheet construction.

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