JP2012012883A - Waterproof structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a waterproof structure capable of ensuring water cutting-off property while a water leakage point is easily specified when water is leaking.SOLUTION: A plurality of waterproof steel plates 14A, 14B are arranged such that the ends of each plate are superposed, and cover an object 12 to be waterproofed. A waterproof sheet 24 disposed along an overlapping portion 16 of the waterproof steel plates 14A, 14B is fixed at their ends to each of the surfaces of the adjacent waterproof steel plates 14A, 14B. A first expandable sealer 26 is provided on an end side of the waterproof steel plates 14B, and the first expandable sealer 26 is arranged in a range covered with the waterproof sheet 24 and pushes up the waterproof sheet 24 when the sealer 26 expands. In the overlapping portion 16 of the waterproof steel plates 14A, 14B, a second expandable sealer 28 is arranged between the waterproof steel plates 14A, 14B, and the second expandable sealer 28 is press-fitted to the upper and lower waterproof steel plates 14A, 14B when the sealer 28 expands.

Description

  The present invention relates to a waterproof structure including a waterproof panel and a waterproof sheet.

  As a waterproof structure, for example, there is a structure in which a water-swellable seal material is disposed between a sealing material and a backup material in a joint between various panels constituting an exterior, interior, or equipment of a building ( For example, see Patent Document 1). In such a structure, the water-expandable seal material is expanded at the time of water leakage so as to seal the gap between the water-expandable seal material and the joint side surface, and at the same time, the sealant is pushed up. We are trying to make it easier to find the location of the leak.

JP 2001-248243 A

  However, in this structure, it is difficult to push up a sealing material having a predetermined hardness from the joint when the water-expandable seal material is expanded, and the water-expandable seal material pushes out only the backup material on the opposite side. There is a high possibility that it will end. In addition, when a material with a high expansion rate is used for the water-expandable seal material to push the sealing material from the joint at the time of water leakage, the joint formation site is greatly deformed by the expansion of the water-expandable seal material. It may cause a flooding route.

  In view of the above facts, an object of the present invention is to obtain a waterproof structure that can easily identify the location of water leakage and ensure water-stopping properties.

  The waterproof structure according to the first aspect of the present invention is arranged such that the end portions are overlapped with each other, the plurality of waterproof panels covering the waterproof object, and the overlapped portion of the waterproof panels are arranged adjacent to each other. A waterproof sheet having one end fixed to the surface of one of the waterproof panels and the other end fixed to the surface of the other adjacent waterproof panel, and an end side of the waterproof panel and within a range covered by the waterproof sheet A first inflatable sealing material that is disposed and configured to expand upon contact with water, and that pushes up the waterproof sheet during expansion, and between the waterproof panels in the overlapping portion of the waterproof panel And a second inflatable sealing material that is configured to include an inflating material that expands by contact with water and that is crimped to the upper and lower waterproof panels when inflated.

  According to the waterproof structure of the present invention described in claim 1, the plurality of waterproof panels are arranged with their ends overlapped to cover the waterproof object. One end of the waterproof sheet disposed along the overlapping portion of the waterproof panels is fixed to the surface of one adjacent waterproof panel, and the other end is fixed to the surface of the other adjacent waterproof panel. For this reason, infiltration of water from between the waterproof panels is suppressed by the waterproof sheet.

  Here, the first inflatable sealing material provided on the end side of the waterproof panel is arranged in a range covered by the waterproof sheet, and includes an inflating material that expands by contact with water. Push up the tarpaulin. For this reason, when the waterproof sheet is cut and water such as rain water that has poured onto the waterproof sheet leaks, the first inflatable sealing material in contact with the infiltrated water expands and pushes up the waterproof sheet and is pushed up The tarpaulin swells. Therefore, the swelling of the waterproof sheet can be easily visually confirmed from the outside, and the location of the water leakage can be easily identified.

  Further, a second inflatable sealing material is disposed between the waterproof panels in the overlapping portion of the waterproof panels, and the second inflatable sealing material is configured to include an inflating material that expands by contact with water, Crimped to the top and bottom waterproof panels when inflated. For this reason, when water infiltrates between waterproof panels, the second inflatable sealing material in contact with the infiltrated water expands and is crimped to the upper and lower waterproof panels. Intrusion of water into the object is prevented.

  The waterproof structure of the present invention described in claim 2 is the structure according to claim 1, wherein the waterproof panel is disposed along a water gradient, and an end portion of the waterproof panel on the upstream side of the water gradient is Overlaid on the end of the waterproof panel on the downstream side of the water gradient.

  According to the waterproof structure of the present invention described in claim 2, water enters between the waterproof panels and the second inflatable sealing material expands, and the waterproof on the upstream side of the water gradient located on the surface side thereof. When the edge part in a panel is pushed up by expansion | swelling of a 2nd expansible sealing material, the waterproof panel of the upstream of a water gradient inclines so that the upstream of a water gradient may become low. Therefore, it is possible to suppress the water on the upstream side of the water gradient from flowing between the waterproof panels.

  A waterproof structure according to a third aspect of the present invention is the structure according to the first or second aspect, wherein the second inflatable sealing material is a fastening for fixing the waterproof panel to the waterproof object. It is arrange | positioned in the position containing the position which covers a means.

  According to the waterproof structure of the present invention as set forth in claim 3, the intrusion of water from the fastening hole is effectively suppressed.

  A waterproof structure according to a fourth aspect of the present invention is the structure according to any one of the first to third aspects, wherein the first inflatable sealing material includes the waterproof sheet and the waterproof panel. Arranged between.

  According to the waterproof structure of the present invention described in claim 4, when the waterproof sheet is cut and water enters, the first inflatable sealing material expands in contact with water and is located on the surface side thereof. Push up the sheet to inflate it. For this reason, specification of a water leak location becomes still easier.

  A waterproof structure according to a fifth aspect of the present invention is the structure according to any one of the first to fourth aspects, wherein a plurality of the first inflatable sealing materials are arranged at intervals.

  According to the waterproof structure of the present invention described in claim 5, when water leaks at a plurality of locations, the first inflatable sealing material expands at the plurality of locations, and the first inflatable sealing material is a waterproof sheet. Push up to inflate. For this reason, it becomes easy to identify the water leakage location at a plurality of locations.

  As described above, the waterproof structure according to claim 1 of the present invention has an excellent effect that it is easy to specify the location of the water leakage at the time of water leakage and to ensure water stopping.

  The waterproof structure according to claim 2 has an excellent effect that water on the upstream side of the water gradient can be prevented from flowing between the waterproof panels.

  According to the waterproof structure of the third aspect, there is an excellent effect that water intrusion from the fastening hole can be effectively suppressed.

  According to the waterproof structure of the fourth aspect of the present invention, there is an excellent effect that the location of the water leakage can be further facilitated.

  According to the waterproof structure of the fifth aspect, there is an excellent effect that it is possible to easily identify water leakage at a plurality of locations.

It is sectional drawing which shows the waterproof structure which concerns on the 1st Embodiment of this invention. It is a disassembled perspective view which shows the waterproof structure which concerns on the 1st Embodiment of this invention. It is explanatory drawing for demonstrating the effect | action of the 1st Embodiment of this invention. FIG. 3A is a cross-sectional view showing a state where the first inflatable sealing material has expanded. FIG. 3B is a cross-sectional view showing a state where the second inflatable sealing material is further expanded from the state of FIG. It is a top view which shows the waterproof structure which concerns on the 2nd Embodiment of this invention. It is sectional drawing which shows the waterproof structure which concerns on the 3rd Embodiment of this invention. It is sectional drawing which concerns on the 3rd Embodiment of this invention and shows the state which the 1st expansible sealing material expanded. It is sectional drawing which shows the waterproof structure which concerns on a reference example. It is sectional drawing which concerns on a reference example and shows the state which the expandable sealing material expanded.

[First Embodiment]
A waterproof structure according to a first embodiment of the present invention will be described with reference to FIGS.

  1 shows a waterproof structure 10 according to the first embodiment of the present invention in a sectional view, and FIG. 2 shows the waterproof structure 10 in an exploded perspective view. As shown in FIG. 1, the waterproof structure 10 is disposed on a waterproof object 12. The waterproof object 12 is, for example, a heat insulating material or a floor board arranged on the roof (roof) or balcony of a building.

  As shown in FIGS. 1 and 2, the waterproof structure 10 includes waterproof steel plates 14 </ b> A and 14 </ b> B as a plurality of waterproof panels that cover the waterproof object 12. In the figure, two waterproof steel plates 14A and 14B are shown, but it goes without saying that the number is not limited to this. In addition, the waterproof steel plates 14A and 14B are painted steel plates (so-called polyvinyl chloride steel plates) coated with a vinyl chloride resin in this embodiment.

  As shown in FIG. 1, the plurality of waterproof steel plates 14 </ b> A and 14 </ b> B are arranged with their ends overlapped. More specifically, the waterproof steel plates 14A and 14B are arranged along the water gradient, and the end of the waterproof steel plate 14A on the upstream side (right side in FIG. 1) of the water gradient is on the downstream side of the water gradient (see FIG. 1 on the left side of the waterproof steel plate 14B.

  In the overlapping portion 16 of the waterproof steel plates 14A and 14B, a groove portion 18 having a rectangular cross section having an upper opening is formed at the end of the waterproof steel plate 14B disposed on the lower side. The groove 18 is elongated and extends to the end of the waterproof steel plate 14B (see FIG. 2). In the groove portion 18, screws 22 as fastening means for fixing the waterproof steel plate 14 </ b> B to the waterproof object 12 are arranged at a predetermined interval in the extending direction of the groove portion 18. The fastening means may be a bolt or the like instead of the screw 22. The screw 22 passes through the bottom of the groove 18 and is screwed to the mounting portion side of the waterproof object 12.

  Further, a strip-shaped waterproof sheet 24 (stretch sheet, waterproof layer) is disposed along the overlapping portion 16 (in other words, the joint portion) of the waterproof steel plates 14A and 14B (in the direction perpendicular to the paper surface of FIG. 1). ing. The waterproof sheet 24 has one end 24A (one end in the width direction) fixed to the surface of one adjacent waterproof steel sheet 14A by adhesion, and the other end 24B (the other in the width direction) on the surface of the other adjacent waterproof steel sheet 14B. Are fixed by bonding. As the material of the waterproof sheet 24, a vinyl chloride resin sheet or the like can be used.

  In the overlapping portion 16 of the waterproof steel plates 14A and 14B, the first inflatable sealing material 26 is provided on the end side of the waterproof steel plate 14B arranged on the lower side and is arranged in a range covered by the waterproof sheet 24. Yes. In the present embodiment, the first inflatable sealing material 26 is not covered by the waterproof steel sheet 14A disposed on the upper side in the overlapping portion 16, and is disposed between the waterproof sheet 24 and the waterproof steel sheet 14B. The position where the waterproof sheet 24 can be pressed is set. The first inflatable sealing material 26 extends along the stepped portion 25 between the waterproof steel plate 14A and the waterproof steel plate 14B (along a direction perpendicular to the paper surface of FIG. 1), and expands by contact with water. It is configured to include a material such as a polymer absorber or an absorbent polymer, and pushes up the waterproof sheet 24 when expanded.

  Moreover, the 2nd expansible sealing material 28 is arrange | positioned between the waterproof steel plates 14A and 14B in the overlapping part 16 of the waterproof steel plates 14A and 14B. The second inflatable sealing material 28 is disposed in a position including the position that is provided in the groove portion 18 of the waterproof steel plate 14 </ b> B and covers the screw 22, and extends along the groove portion 18. The second inflatable sealing material 28 is configured to include an inflating material that expands by contact with water, such as a polymer absorber or an absorbent polymer, and is crimped to the upper and lower waterproof steel plates 14A and 14B during expansion. It has become. Here, a material having a lower expansion ratio (expansion rate) than that of the first inflatable sealing material 26 is applied to the second inflatable sealing material 28.

(Action / Effect)
Next, the operation and effect of the above embodiment will be described.

  The state shown in FIG. 1 is a state in which the waterproof sheet 24 is not damaged. In this state, rainwater and the like are stopped by the waterproof steel plates 14A and 14B and the waterproof sheet 24 (primary water stop). From this state, when a damaged portion 20 indicated by an imaginary line is generated in the waterproof sheet 24 due to aging or some load applied to the waterproof sheet 24, rainwater or the like enters from the damaged portion 20. In addition, since it is not normally considered that the waterproof steel plates 14A and 14B are damaged, a portion of the waterproof structure 10 that may leak water is a portion of the waterproof sheet 24 provided in the joint portion.

  As shown in FIG. 3 (A), when rainwater or the like comes into contact with the first inflatable sealing material 26 from the damaged portion 20 and is absorbed, the first inflatable sealing material 26 expands to become the surface side thereof. The peripheral portion 24C of the damaged portion of the waterproof sheet 24 is pushed up and swells. Here, a material having a higher expansion ratio (expansion rate) than that of the second inflatable sealing material 28 is applied to the first inflatable sealing material 26, and the damaged portion surrounding portion 24 </ b> C of the waterproof sheet 24 is sufficiently provided. Can be inflated. Therefore, the swelling of the peripheral portion 24C of the damaged portion of the waterproof sheet 24 can be easily confirmed from the outside. Further, since the location where the waterproof sheet 24 swells, that is, the damaged portion surrounding portion 24C is the water leakage location itself, it is easy to identify the water leakage location. That is, it can be said that the waterproof structure 10 of this embodiment has an alert function (explicit function) of water leakage.

  Moreover, although the 1st expansible sealing material 26 will also form a waterproof layer by expansion | swelling and will stop rainwater etc. (secondary water stop), inundation advances and it is between waterproofing steel plates 14A and 14B. When rainwater or the like enters, the rainwater or the like comes into contact with the second inflatable sealing material 28 and is absorbed as shown in FIG. As a result, when the second inflatable sealing material 28 expands, the second inflatable sealing material 28 is pressure-bonded to the upper and lower waterproof steel plates 14A and 14B. Water), and intrusion of rainwater and the like from between the waterproof steel plates 14A and 14B to the waterproof object 12 side is prevented (exemplification of water stop function). Here, since a material having a lower expansion ratio (expansion rate) than that of the first inflatable sealing material 26 is applied to the second inflatable sealing material 28, the waterproof steel sheet 14A does not need to be lifted excessively. .

  Further, in the waterproof structure 10 according to the present embodiment, the waterproof steel plates 14A and 14B are arranged along the water gradient, and the end portion of the waterproof steel plate 14A on the upstream side of the water gradient is on the downstream side of the water gradient. Overlaid on the end of the waterproof steel plate 14B. For this reason, rainwater or the like enters between the waterproof steel plates 14A and 14B and the second inflatable sealing material 28 expands, and the end of the waterproof steel plate 14A on the upstream side of the water gradient located on the surface side is the second. When pushed up by the expansion of the inflatable sealing material 28, the waterproof steel plate 14A is inclined so that the upstream side of the water gradient becomes lower. Therefore, it is possible to suppress rainwater and the like on the upstream side of the water gradient from flowing between the waterproof steel plates 14A and 14B, and it is possible to suppress damage due to water leakage.

  Moreover, in the waterproof structure 10 according to the present embodiment, the second inflatable sealing material 28 is disposed at a position including a position that covers the screw 22 for fixing the waterproof steel plates 14A and 14B to the waterproof object 12. . For this reason, intrusion of rainwater or the like from the screw hole 18A (fastening hole) is effectively suppressed.

  As described above, according to the waterproof structure 10 according to the present embodiment, it is easy to specify a water leakage location and ensure water stopping at the time of water leakage. Further, in the present embodiment, the first expansible sealing material 26 is disposed at the visual priority location clearly indicating the water leakage location, and the second expansible sealing material 28 is disposed at the water stopping priority location, For the first inflatable sealing material 26 and the second inflatable sealing material 28, materials can be selected according to the required functions, respectively, so that the functions can be easily enhanced.

  If maintenance is performed in a state where the first inflatable sealing material 26 shown in FIG. 3A is inflated and the second inflatable sealing material 28 is not inflated, the first inflatable sealing material 26 and Maintenance is good because it is only necessary to replace the waterproof sheet 24.

[Second Embodiment]
Next, a waterproof structure 30 according to a second embodiment of the present invention will be described with reference to FIG. The second embodiment has the same structure as the first embodiment except for the points described below. Therefore, components that are substantially the same as those of the first embodiment are denoted by the same reference numerals and description thereof is omitted.

  FIG. 4 is a plan view showing a waterproof structure 30 according to a second embodiment of the present invention. As shown in this figure, the waterproof structure 30 includes a plurality of first inflatable sealing materials 32 arranged at intervals along a step portion 25 between the waterproof steel plate 14A and the waterproof steel plate 14B. These first inflatable sealing materials 32 have the same configuration as the first inflatable sealing material 26 (see FIG. 1) in the first embodiment except that they are arranged at intervals. .

  In other words, the first inflatable sealing material 32 is disposed between the waterproof sheet 24 and the waterproof steel sheet 14B within the range covered by the waterproof sheet 24 on the end side of the waterproof steel sheet 14B, and presses the waterproof sheet 24. It is set to a possible position. The first inflatable sealing material 32 is configured to include an inflating material that expands by contact with water, for example, a polymer absorber or an absorbent polymer, and is set to push up the waterproof sheet 24 during expansion. ing.

  According to the present embodiment, it is possible to easily identify the water leakage location while stopping water at the time of water leakage, and when there is water leakage at a plurality of locations, the first inflatable sealing material 32 expands at each of the plurality of locations. The waterproof sheet 24 can be inflated.

  In the present embodiment, the space between the first inflatable sealing materials 32 is a space, but a gap filling member may be separately provided between the first inflatable sealing materials 32. .

[Third Embodiment]
Next, the waterproof structure 40 which concerns on the 3rd Embodiment of this invention is demonstrated using FIG.5 and FIG.6. FIG. 5 is a sectional view showing a waterproof structure 40 according to the third embodiment of the present invention. FIG. 6 is a sectional view showing a state where the waterproof sheet 24 of the waterproof structure 40 is cut and water has entered. It is shown in the figure.

  As shown in these drawings, in the waterproof structure 40, the second groove portion 42 is formed in the waterproof steel plate 14C as a waterproof panel, and the first inflatable sealing material 44 and the water stop piece 46 are formed in the groove portion 42. It differs from the waterproof structure 10 (refer FIG. 1) which concerns on 1st Embodiment by the point arrange | positioned. Other configurations are substantially the same as those of the first embodiment. Therefore, components that are substantially the same as those of the first embodiment are denoted by the same reference numerals and description thereof is omitted.

  As shown in FIG. 5, the waterproof steel plate 14 </ b> C has the same configuration and the same position as the waterproof steel plate 14 </ b> B (see FIG. 1) in the first embodiment except that the groove 42 is formed. ing. The groove portion 42 formed in the waterproof steel plate 14C is provided adjacent to the groove portion 18 on the opposite side to the end side (right end side in the drawing) of the waterproof steel plate 14C, and extends in parallel with the groove portion 18 in plan view. ing. The opening width of the groove portion 42 is set larger than the opening width of the groove portion 18, and the opening on the groove portion 18 side in the groove portion 42 is partially blocked by the waterproof steel plate 14 </ b> A. Further, the side wall 42A of the groove portion 42 on the groove portion 18 side is inclined to the opposite side to the groove portion 18 side with the lower side directed.

  A water blocking piece 46 made of synthetic rubber is disposed on the side wall 42A side of the bottom wall 42B of the groove 42 and on the side wall 42A. The water stop piece 46 is formed such that the portion disposed on the bottom wall 42B is thick and the side disposed on the side wall 42A becomes thinner as it reaches the front end side, and the upper surface is formed on the waterproof sheet 24 and the waterproof steel plate 14A. The lower surface is in contact with the bottom wall 42B and the side wall 42A. In other words, the distal end side of the water stop piece 46 is inserted between the waterproof steel plate 14 </ b> A and the side wall 42 </ b> A of the groove 42.

  Further, the side surface of the portion disposed on the bottom wall 42 </ b> B in the water stop piece 46 is in contact with the first inflatable sealing material 44. The first inflatable sealing material 44 is disposed so as to be sandwiched between the waterproof sheet 24 and the bottom wall 42B of the groove portion 42 of the waterproof steel plate 14C, so that the waterproof sheet 24 can be pressed. The side surface opposite to the water stop piece 46 is in contact with the side wall 42 </ b> C of the groove 42. The first inflatable sealing material 44 has the same configuration as the first inflatable sealing material 26 (see FIG. 1) in the first embodiment except that the arrangement position and the thickness in the vertical direction are thick. . That is, the first inflatable sealing material 44 is disposed on the end side of the waterproof steel plate 14C and covered by the waterproof sheet 24, extends in parallel with the second inflatable sealing material 28, and comes into contact with water. While being configured to include an expanding material that expands, the waterproof sheet 24 is pushed up during expansion.

  In the present embodiment, the first inflatable sealing material 44 extends in parallel with the second inflatable sealing material 28, but instead of the first inflatable sealing material 44, the second embodiment (FIG. 4), a plurality of first inflatable sealing materials arranged at intervals along a direction parallel to the second inflatable sealing material 28 may be provided.

(Action / Effect)
According to the present embodiment, when the damaged portion 20 indicated by the imaginary line is generated in the waterproof sheet 24, the first inflatable sealing material is operated as shown in FIG. 6 by the same action as the first embodiment. 44 is expanded and the damaged portion peripheral portion 24C of the waterproof sheet 24 on the surface side is pushed up and expanded. Further, when the first inflatable sealing material 44 expands, the water stop piece 46 is pressed by the first inflatable sealing material 44 toward the side wall 42A (arrow A direction). As a result, the gap between the water stop piece 46 and the waterproof steel plate 14A side and the gap between the water stop piece 46 and the side wall 42A side are sealed, so that rainwater or the like flowing into the groove 18 side is stopped (secondary Water is stopped). Further, since the side wall 42A of the groove 42 is inclined, rainwater or the like that has entered the groove 42 is more likely to flow to the bottom wall 42B side, in other words, to the first inflatable sealing material 44 side than to the groove 18 side.

  In addition, when inundation proceeds and rainwater or the like enters between the waterproof steel plates 14A and 14C, the rainwater or the like is stopped by the second inflatable sealing material 28 (tertiary stop) as in the first embodiment. Water).

  As described above, according to the configuration of the present embodiment, it is easy to specify a water leakage location at the time of water leakage and to ensure water stopping.

  In addition, as a reference example instead of the embodiment of the present invention, for example, a flat portion is formed instead of the groove portion 18 of the waterproof steel plate 14C in the third embodiment, and the second inflatable sealing material 28 is not disposed. A configuration can also be adopted.

[Fourth Embodiment]
Next, a fourth embodiment will be described with reference to FIGS. The fourth embodiment is not an embodiment of the present invention but a reference example. Note that components that are substantially the same as those of the first embodiment are denoted by the same reference numerals and description thereof is omitted.

  As shown in FIG. 7, an inflatable sealing material 50 is disposed between the waterproof steel plates 14 </ b> A and 14 </ b> B in the overlapping portion 16 of the waterproof steel plates 14 </ b> A and 14 </ b> B. The expansible sealing material 50 is disposed in a position including the position where the expansible sealing material 50 is provided in the groove portion 18 of the waterproof steel plate 14B and covers the screw 22. The expandable sealing material 50 is configured to include an expanding material that expands by contact with water, for example, a polymer absorber, an absorbent polymer, or the like. As the inflatable sealing material 50, an inflating material having a higher expansion rate than that of the second inflatable sealing material 28 in the first and third embodiments (see FIGS. 1 and 5) is used.

  According to this embodiment, when the damaged part 20 shown with an imaginary line arises in the waterproof sheet 24, as shown in FIG. 8, the expandable sealing material 50 expand | swells and the waterproof steel plate 14A which becomes the surface side Pressed firmly to be crimped. As a result, the waterproof steel sheet 14A and the waterproof sheet 24 are pushed up while the waterproof layer is formed, and the level difference on the surface of the waterproof sheet 24 increases. In other words, it is possible to specify the location of water leakage while water is stopped at the time of water leakage.

[Supplementary explanation of the embodiment]
In the above embodiment, the waterproof steel plates 14A, 14B, and 14C shown in FIG. 1 and the like are arranged along the water gradient, and the end of the waterproof steel plate 14A on the upstream side of the water gradient is downstream of the water gradient. From the viewpoint of suppressing the water on the upstream side of the water gradient from flowing between the waterproof steel plates 14A, 14B, and 14C. However, the waterproof panel may not be arranged along the water gradient, and the end of the waterproof panel on the downstream side of the water gradient is the end of the waterproof panel on the upstream side of the water gradient. They may be placed on top of each other.

  Moreover, in the said 1st-3rd embodiment, the 2nd expansible sealing material 28 is arrange | positioned in the position including the position which covers the screw | thread 22 for fixing to the waterproof target object 12, and it is from screw hole 18A. Such a configuration is more preferable from the viewpoint of effectively suppressing water intrusion, but the arrangement position of the second inflatable sealing material does not include a position covering the fastening means for fixing to the waterproof object. Also good.

  Moreover, in the said 1st-3rd embodiment, the 1st expansible sealing materials 26, 32, and 44 are arrange | positioned between the waterproof sheet 24 and the waterproof steel plates 14A and 14C, and such a structure is waterproof. Although it is preferable from the viewpoint of pushing up the sheet 24 more efficiently, the first inflatable sealing material is, for example, on the end side of the waterproof panel and covered with the waterproof sheet and between the upper and lower waterproof panels. It may be set at a position that leads to a hollow portion that is disposed and faces the lower surface of the waterproof sheet.

  Furthermore, in the said 1st-3rd embodiment, although the 1st expansible sealing materials 26, 32, and 44 expand | swell by contact with water, the 1st expansible sealing materials are In addition to the expansion material, a curing material that is cured by contact with water may be included. As the curing material, cement, water-curable polyurethane resin, or the like is applicable. In this case, since the hardening material also reacts with water at the time of water leakage, the first inflatable sealing materials 26, 32, 44 corresponding to the damaged portion 20 are hardened while being inflated. For this reason, the state where the 1st expansible sealing materials 26, 32, and 44 corresponding to breakage part 20 swell can be maintained with the state.

DESCRIPTION OF SYMBOLS 10 Waterproof structure 12 Waterproof object 14A Waterproof steel plate (waterproof panel)
14B Waterproof steel sheet (waterproof panel)
14C Waterproof steel sheet (waterproof panel)
16 Superposition part 22 Screw (fastening means)
24 Waterproof Sheet 26 First Expandable Seal Material 28 Second Expandable Seal Material 30 Waterproof Structure 32 First Expandable Seal Material 40 Waterproof Structure 44 First Expandable Seal Material

Claims (5)

A plurality of waterproof panels that are arranged with their ends overlapped to cover a waterproof object;
A waterproof sheet disposed along the overlapping portion of the waterproof panel, with one end fixed to the surface of one adjacent waterproof panel and the other end fixed to the surface of the other adjacent waterproof panel;
A first inflatable seal disposed on the end side of the waterproof panel and covered by the waterproof sheet, including an inflating material that expands by contact with water, and pushes up the waterproof sheet during expansion Material,
A second inflatable sealing material that is disposed between the waterproof panels in the overlapping portion of the waterproof panels and includes an inflating material that expands by contact with water, and is crimped to the upper and lower waterproof panels during expansion. When,
A waterproof structure.   The waterproof panel is disposed along a water gradient, and an end portion of the waterproof panel on the upstream side of the water gradient is disposed so as to be superimposed on an end portion of the waterproof panel on the downstream side of the water gradient. The waterproof structure according to claim 1.   The waterproof structure according to claim 1 or 2, wherein the second inflatable sealing material is disposed at a position including a position that covers a fastening means for fixing the waterproof panel to the waterproof object.   The waterproof structure according to any one of claims 1 to 3, wherein the first inflatable seal material is disposed between the waterproof sheet and the waterproof panel.   The waterproof structure according to any one of claims 1 to 4, wherein a plurality of the first inflatable sealing materials are arranged at intervals.