JP2017223061A - Water stopper - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a water stopper capable of stopping water at a gap part while allowing variations in a relative position between two structures.SOLUTION: A water stopper 100 comprises: a film member 10 that has a rectangular shape having four sides composed of a first side 10a whose side is fixed on a water intake part 101, a second side 10b whose side is in a folded state and is fixed on a protective barrier 102, a third side 10c in contact with one end surface Ga of a gap part G, and a fourth side 10d in contact with the other end surface Gb of the gap part G to close the gap part G, and follows vibration-induced variations in a relative position between the water intake part 101 and the protective barrier 102 to be deformable so that folded part moves in a direction in parallel with the third side 10c and the fourth side 10d in a state in which the gap part G is closed; and fixation parts 20 that establish fixation and tight contact between the film member 10 and the water intake part 101 and between the film member 10 and the protective barrier 102.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a water stop device.

  In recent years, power generation facilities and the like in coastal areas have been required to expand disaster countermeasures such as earthquakes and tsunamis. For example, it is considered to construct a seawall along the coast. Such a power generation facility or the like may be provided with a water intake unit for drawing seawater into the premises. The intake section is a culvert structure constructed using concrete or the like, for example, and has a plurality of intake ports protruding from the premises toward the sea side.

  Since the seawall is constructed along the coast, if a water intake is provided, it will cross the water intake. Due to the structure of the intake section, it is difficult to place the seawall directly on the upper surface of the intake section. For this reason, the structure which constructs a foundation structure on both sides of a water intake part, and constructs a protective wall between the foundation structures is proposed.

  When providing such a protective wall, it is necessary to provide a gap between the upper surface of the water intake unit and the protective wall in order to prevent the water intake unit and the protective wall from interfering with each other due to vibration generated when an earthquake occurs. On the other hand, when providing a clearance part, it is necessary to stop water so that seawater may not enter the premises from the clearance part. For example, a configuration in which watertight rubber is disposed in a gap portion, a configuration in which a waterstop film is disposed between two pillars (for example, see Patent Document 1), and the like are known.

JP 2005-226411 A

  In the above configuration, the water intake part and the protective wall may move relatively due to vibration or the like when an earthquake occurs. For this reason, the structure which can stop the water of a clearance gap part is calculated | required, accept | permitting the fluctuation | variation of the relative position between a water intake part and a protective wall. Moreover, it is not restricted to a water intake part and a protective wall, The structure which can stop the water | moisture content of a clearance gap is calculated | required, accept | permitting the fluctuation | variation of the relative position between two structures.

  The present invention has been made in view of the above, and an object of the present invention is to provide a water stop device that can stop water in a gap portion while allowing variation in the relative position between two structures.

  The water stop device according to the present invention is a gap formed between a first structure and a second structure built on the ground, and is opposed to the first structure and the second structure. A water stop device for stopping a gap portion having end faces parallel to each other at both ends in a direction perpendicular to the direction, which is rectangular, and a first side of four sides is fixed to the first structure, A second side parallel to the first side is fixed to the second structure in a folded state, and the third side different from the first side and the second side contacts one end surface of the gap portion. Then, the fourth side contacts the other end face of the gap portion to close the gap portion and follow the fluctuation of the relative position between the first structure and the second structure due to vibration. The folded portion moves in a direction parallel to the third side and the fourth side with the gap portion closed. Comprising a deformable membrane member so that, between the film member and the first structure, and a fixing portion is brought into close contact with the fixed respectively between the film member and the second structure.

  According to the present invention, for example, even when the relative position between the first structure and the second structure fluctuates due to vibration in the event of an earthquake or the like, the membrane member closes the gap portion. Following the change in the relative position, the folded portion is deformed so as to move in a direction parallel to the third side and the fourth side. As a result, it is possible to stop the gap portion while allowing the relative position between the first structure and the second structure to vary.

  The second structure includes a pair of foundation structures arranged with the first structure interposed therebetween, and is installed between the pair of foundation structures and vertically above the first structure. A rectangular beam portion disposed with the gap portion therebetween, and the film member may block the gap portion between the first structure and the beam portion of the second structure.

  According to the present invention, even when the vibration of the beam portion of the second structure having the portal structure is larger than that of the first structure, the film member can be deformed following the fluctuation of the second structure. It is. Therefore, water can be reliably stopped at the gap portion.

  The first structure may be a water intake provided in a coastal area, and the second structure may include a protective wall provided above the water intake in the vertical direction.

  According to the present invention, even when the protective wall vibrates with water pressure or the like, it is possible to stop the gap portion while allowing the relative position between the protective wall and the water intake portion to vary due to the vibration. It becomes.

  The membrane member is in a state extending in a direction parallel to the third side and the fourth side, and a plurality of the film members are arranged at predetermined intervals in a direction parallel to the first side and the second side. You may have a tension belt.

  According to the present invention, since tension is applied to the membrane member, for example, when the membrane member is arranged in a curved state, the curved state can be maintained.

  The fixing portion includes a fixing member that fixes the membrane member and the tension belt to the first structure and the second structure, and a portion of the membrane member between the adjacent tension belts. You may have a fixing member fixed to the 1st structure and the 2nd structure.

  According to the present invention, since the adhesion between the membrane member and the first structure and between the membrane member and the second structure is improved, the formation of a gap in the step portion of the tension belt can be suppressed. Intrusion of water from the gap can be reliably suppressed.

  The membrane member may include a reinforcing belt disposed in a direction parallel to the first side and the second side.

  According to the present invention, since the strength of the membrane member can be maintained, durability can be improved.

  ADVANTAGE OF THE INVENTION According to this invention, the water stop apparatus which can stop water of a clearance gap part can be provided, allowing the fluctuation | variation of the relative position between two structures.

FIG. 1 is a diagram illustrating an example of a water stop device according to the present embodiment. FIG. 2 is a perspective view showing a configuration along the section AA in FIG. FIG. 3 is an enlarged view showing a part of the AA cross section. FIG. 4 is a diagram illustrating an example of the membrane member. FIG. 5 is a plan view showing a part of the membrane member fixed by the fixing portion. FIG. 6 is a cross-sectional view showing a part of the membrane member fixed by the fixing portion. FIG. 7 is a diagram illustrating an example of a usage pattern of the water stop device according to the present embodiment. FIG. 8 is a diagram illustrating an example of a usage pattern of the water stop device according to the present embodiment.

  Hereinafter, embodiments of a water stop device according to the present invention will be described with reference to the drawings. In addition, this invention is not limited by this embodiment. In addition, constituent elements in the following embodiments include those that can be easily replaced by those skilled in the art or those that are substantially the same.

  FIG. 1 is a diagram illustrating an example of a water stop device 100 according to the present embodiment. FIG. 2 is a perspective view showing a configuration along the section AA in FIG. FIG. 3 is an enlarged view showing a part of the AA cross section. As shown in FIGS. 1 to 3, the water stop device 100 is disposed in a gap portion G formed between a water intake portion 101 that is a first structure and a protective wall 102 that is a second structure. .

  Here, the structure of the water intake part 101 and the protection wall 102 in which the water stop apparatus 100 is provided is demonstrated. The intake section 101 is provided in a power generation facility or the like in a coastal area, and is disposed so as to protrude from the premises (land side) of the facility toward the sea side, for example. The water intake unit 101 is provided to draw seawater into the premises. The intake part 101 is arrange | positioned on the seabed B of a coastal part, for example. The water intake unit 101 is constructed of, for example, concrete and has a culvert structure having a plurality of water intakes 101a. The upper surface in the vertical direction of the water intake unit 101 is a plane parallel to the horizontal plane.

  The protective wall 102 is disposed above the water intake unit 101 in the vertical direction. The protective wall 102 has a plurality of box-shaped structures. The plurality of box-shaped structures are made of steel, for example. The protective wall 102 is arranged such that a plurality of such box-shaped structures are arranged in a straight line in a direction across the water intake unit 101, and are stacked in a plurality of stages in the vertical direction. The protective wall 102 is a beam portion installed between the steel foundations 104 as the second structure. The lower surface in the vertical direction of the protective wall 102 is a plane parallel to the horizontal plane. The lower surface of the protective wall 102 faces the upper surface of the water intake unit 101 in the vertical direction. Therefore, in this embodiment, the opposing direction of the water intake part 101 and the protective wall 102 is a vertical direction.

  The steel foundation 104 is constructed on the foundation structure 103. The foundation structure 103 is constructed on, for example, the ground B under the sea. The foundation structure 103 is arranged along the coast and is constructed so as to straddle the intake section 101. The steel foundation 104 is arranged on the foundation structure 103 constructed on the ground B. Therefore, in the present embodiment, the second structure includes the foundation structure 103. A seawall 105 is constructed at the upper part of each foundation structure 103 arranged on both sides of the intake section 101. The steel foundation 104 is connected to each tide embankment 105 and is disposed at a position sandwiching the water intake portion 101.

  As described above, the second structure is installed between the pair of foundation structures 103 and the steel foundation 104 arranged with the water intake unit 101 interposed therebetween, and between the pair of foundation structures 103 and the steel foundation 104. It is a portal structure having a protective wall 102.

  The gap portion G has end faces Ga and Gb at both ends in the direction perpendicular to the vertical direction, in the present embodiment, the direction in which the protective wall 102 is installed. The end faces Ga and Gb are parallel to each other. The end faces Ga and Gb are perpendicular to the horizontal plane. The end faces Ga and Gb may be part of a joint portion, for example. For example, the gap portion G has a rectangular shape when viewed from the opening direction of the water intake port 101a. Further, a vertical distance d is provided between the upper surface of the water intake unit 101 and the lower surface of the protective wall 102. The distance d is set to about 100 mm, for example.

  Next, the structure of the water stop apparatus 100 is demonstrated. The water stop device 100 includes a membrane member 10 and a fixing portion 20. FIG. 4 is a diagram illustrating an example of the membrane member 10. In FIG. 4, the stretched membrane member 10 is shown. As shown in FIG. 4, the membrane member 10 has a rectangular shape. The film member 10 has four sides, that is, a first side 10a, a second side 10b, a third side 10c, and a fourth side 10d. The first side 10a and the second side 10b are parallel. The third side 10c and the fourth side 10d are parallel.

  The membrane member 10 has a first side 10 a fixed to the upper surface of the water intake unit 101. In addition, when the adjustment board 106 for adjusting the distance d of the clearance gap part G is provided in the upper surface of the water intake part 101, the 1st edge | side 10a is fixed to the upper surface of the adjustment board 106. FIG. The membrane member 10 has a second side 10 b fixed to the protective wall 102. In the membrane member 10, the first side 10a and the second side 10b are arranged toward the sea side, and a portion between the first side 10a and the second side 10b is curved. That is, the membrane member 10 has a shape folded at a portion between the first side 10a and the second side 10b. The membrane member 10 may be configured such that the same surface is in contact with the upper surface of the water intake unit 101 and the lower surface of the protective wall 102.

  As for the film | membrane member 10, the 3rd edge | side 10c is contacting the end surface Ga of the clearance gap part G (refer FIG. 1). Further, the membrane member 10 has the fourth side 10d in contact with the end face Gb of the gap portion G (see FIG. 1). With this configuration, the membrane member 10 closes the gap portion G with almost no gap. Therefore, even if the sea level of the seawater W is higher than that of the gap portion G, the seawater can be stopped in the gap portion G, so that intrusion of seawater from the gap portion G is suppressed.

  Further, when the water intake 101 and the protective wall 102 vibrate due to an earthquake or the like and the relative position between the water intake 101 and the protective wall 102 fluctuates, the membrane member 10 follows the change in the relative position to follow the third change. It can be deformed in a direction parallel to the side 10c and the fourth side 10d. When the film member 10 is deformed in a direction parallel to the third side 10c and the fourth side 10d, the third side 10c and the fourth side 10d slide while being in contact with both ends of the gap portion G in the longitudinal direction. become. Therefore, the membrane member 10 can be deformed while the gap portion G is closed.

  For example, as shown in FIG. 3, the membrane member 10 is disposed on the back side by a predetermined distance on the land side with respect to the end surface on the sea side of the protective wall 102. For this reason, an operator can enter the sea side portion of the membrane member 10 from the inside of the protective wall 102 that is hollow, and the membrane member 10 can be maintained from the sea side.

  The membrane member 10 includes a sheet material 11, reinforcing belts 12 and 13, a tension belt 14, and a watertight rubber plate 15. The sheet material 11 is formed in a rectangular shape using a resin material such as polyarylate fiber, and has flexibility. The reinforcing belts 12 and 13, the tension belt 14, and the watertight rubber plate 15 are attached to one surface of the sheet material 11, for example.

  The reinforcing belts 12 and 13 reinforce the sheet material 11. The reinforcing belts 12 and 13 are disposed in parallel to the first side 10a and the second side 10b. The reinforcing belt 12 is provided on the first side 10a and the second side 10b. The reinforcing belt 12 ensures the strength of both ends of the membrane member 10 in the short direction (direction parallel to the third side 10c and the fourth side 10d). The reinforcing belt 13 is disposed at the center portion of the sheet material 11 in the short direction. The reinforcing belt 13 ensures the strength of the curved portion of the membrane member 10. The reinforcing belt 13 is formed using a resin material such as polyester, for example.

  The tension belt 14 is disposed in parallel with the third side 10c and the fourth side 10d. A plurality of tension belts 14 are arranged side by side at a predetermined interval in a direction parallel to the first side 10a and the second side 10b. The tension belt 14 is formed using a resin material such as polyester. The tension belt 14 maintains the curved shape of the membrane member 10 by applying tension to the sheet material 11.

  The reinforcing belt 12 and the tension belt 14 have insertion holes 12a and 14a for inserting the bolts of the fixing portion 20. The insertion hole 12 a is disposed in a portion between the adjacent tension belts 14 in the reinforcing belt 12. A plurality of, for example, three insertion holes 12a are arranged at intervals in a direction parallel to the first side 10a and the second side 10b. However, the present invention is not limited to this, and the number of insertion holes 12a is two or less or four or more. There may be. The insertion holes 14a are disposed at both ends of the tension belt 14 in the direction parallel to the third side 10c and the fourth side 10d. For example, six insertion holes 14a are provided, but the number is not limited thereto, and may be five or less or seven or more.

  The watertight rubber plate 15 is provided on the third side 10c and the fourth side 10d. The watertight rubber plate 15 contacts both ends of the gap portion G in the longitudinal direction. The watertight rubber plate 15 protects both end portions (the third side 10c and the fourth side 10d) of the membrane member 10 in the longitudinal direction.

  Further, the membrane member 10 has cover sheets 16 at both ends in the longitudinal direction (direction parallel to the first side 10a and the second side 10b) in a state where the membrane member 10 is curved and disposed in the gap portion G ( The one-dot chain line part of FIG. 3). The cover sheet 16 is attached to the third side 10 c and the fourth side 10 d of the membrane member 10, and specifically, is fixed to each watertight rubber plate 15. The cover sheet 16 prevents water from leaking from both ends in the longitudinal direction of the membrane member 10. As shown in FIG. 3, the cover sheet 16 is arranged in a bent state.

  The fixing part 20 has a first fixing part 21 and a second fixing part 22. The first fixing unit 21 fixes between the membrane member 10 and the upper surface of the water intake unit 101, and causes the membrane member 10 to adhere to the upper surface of the water intake unit 101. Further, the second fixing portion 22 fixes between the membrane member 10 and the protective wall 102 and causes the membrane member 10 to adhere to the protective wall 102.

  FIG. 5 is a plan view showing a part of the membrane member 10 fixed by the first fixing portion 21. As shown in FIG. 5, the first side 10 a of the membrane member 10 is fixed to the upper surface of the water intake unit 101 by the first fixing unit 21. The first fixing portion 21 includes a pressing plate 23 and a bolt 25 that fix the tension belt 14, and a pressing plate 27 and a bolt 29 that fix the reinforcing belt 12. As for the 1st edge | side 10a of the membrane member 10, the surface by the side of the sheet | seat material 11 closely_contact | adheres to the upper surface of the water intake part 101 by the 1st fixing | fixed part 21, for example. For this reason, since the flat surface of the membrane member 10 is in close contact with the upper surface of the water intake portion 101, it is difficult to form a gap between the membrane member 10 and the upper surface of the water intake portion 101.

  FIG. 6 is a cross-sectional view showing a part of the membrane member 10 fixed by the second fixing portion 22. As shown in FIG. 6, the second side 10 b of the membrane member 10 is fixed to the fixing member 102 a of the protective wall 102 by the second fixing portion 22. The second fixing portion 22 includes a pressing plate 24 and a bolt 26 that fix the tension belt 14, and a pressing plate 28 and a bolt 30 that fix the reinforcing belt 12. The second side 10b of the membrane member 10 is brought into contact with the upper surface of the fixing member 102a by the second fixing portion 22, for example. In this case, a gap is formed in the portion surrounded by the reinforcing belt 12, the tension belt 14, and the upper surface of the fixing member 102 a due to the step of the tension belt 14. In the present embodiment, the resin member 32 is disposed in a portion surrounded by the reinforcing belt 12, the tension belt 14, and the upper surface of the fixing member 102a. For this reason, the membrane member 10 is in close contact with the upper surface of the fixing member 102a by the resin member 32 in a state where a gap is closed. Note that the tension belt 14 side surface may be in contact with the upper surface of the water intake portion 101 on the first side 10a of the membrane member 10 instead of the second side 10b of the membrane member 10. In this case, the resin member is disposed between the first side 10 a of the membrane member 10 and the upper surface of the water intake unit 101.

  Next, the usage pattern of the water stop apparatus 100 comprised as mentioned above is demonstrated. FIG.7 and FIG.8 is a figure which shows an example of the usage condition of the water stop apparatus 100 which concerns on this embodiment. The intake portion 101 and the protection wall 102 may vibrate due to an earthquake or the like, and the relative positions of each other may fluctuate. For example, as shown in FIG. 7, when the protective wall 102 moves relative to the water intake portion 101 toward the sea side, the membrane member 10 deforms following the movement of the protective wall 102. Specifically, the second side 10b side is pulled toward the sea side and moves while the membrane member 10 is kept curved by the tension belt 14. In this case, the folded portion of the membrane member 10 moves to the sea side in a direction parallel to the third side 10c and the fourth side 10d. Further, the third side 10c of the membrane member 10 slides in a state in which it is in contact with the end face Ga of the gap portion G. Similarly, the fourth side 10d of the membrane member 10 slides while being in contact with the end face Gb of the gap portion G. For this reason, the contact state between the membrane member 10 and the end faces Ga and Gb of the gap portion G is maintained. In this case, the cover sheets 16 disposed at both ends in the longitudinal direction of the membrane member 10 are in an extended state by pulling the second side 10b. For this reason, even when the water level of the seawater W rises, both ends in the longitudinal direction of the membrane member 10 are covered by the cover sheet 16, and water intrusion from the gap portions from both ends is suppressed.

  For example, as shown in FIG. 8, even when the protective wall 102 moves to the land side relative to the water intake portion 101, the membrane member 10 deforms following the movement of the protective wall 102. Specifically, the second side 10b side is pushed and moved to the land side, and accordingly, the curved portion of the membrane member 10 moves to the land side in a direction parallel to the third side 10c and the fourth side 10d, The contact area between the membrane member 10 and the upper surface of the water intake unit 101 is increased. Further, the third side 10c of the membrane member 10 slides in a state in which it is in contact with the end face Ga of the gap portion G. Similarly, the fourth side 10d of the membrane member 10 slides while being in contact with the end face Gb of the gap portion G. For this reason, the contact state between the membrane member 10 and the end faces Ga and Gb of the gap portion G is maintained. Further, the cover sheets 16 disposed at both ends in the longitudinal direction of the membrane member 10 are slightly stretched when the second side 10b is pushed to the land side. For this reason, even if the water level of the seawater W rises, both ends in the longitudinal direction of the membrane member 10 are covered by the cover sheet 16, so that intrusion of water from the gap portions from both ends is suppressed.

  As described above, according to the present embodiment, the water stop device 100 closes the rectangular gap portion G between the water intake unit 101 and the protection wall 102 in the horizontal direction, and protects the water intake unit 101 and the protection by vibration. A film member 10 that can be deformed so that the folded portion moves in a direction parallel to the third side 10c and the fourth side 10d in a state in which the gap portion G is closed following the change in relative position with the wall 102. The fixing member 20 is provided to fix and closely contact the membrane member 10 and the water intake portion 101 and between the membrane member 10 and the protective wall 102. For this reason, even when the relative position between the water intake portion 101 and the protective wall 102 changes due to an earthquake or the like, the membrane member 10 follows the change in the relative position while the gap portion G is closed. It is deformed in a direction parallel to the first side 10a and the second side 10b. As a result, it is possible to stop the gap G while allowing the relative position between the water intake unit 101 and the protective wall 102 to vary.

  Moreover, according to this embodiment, the foundation structure 103 and the steel foundation 104 which are 2nd structures, and the protective wall 102 are gate type structures. For this reason, even if the vibration of the protective wall 102 is large with respect to the water intake 101 that is the first structure, the water stop device 100 can be deformed following the fluctuation of the protective wall 102. . Thereby, the water stop of the clearance gap part G can be performed reliably.

  Moreover, according to this embodiment, since the 1st structure is the water intake part 101 and the 2nd structure is the structure containing the protection wall 102, the water stop apparatus 100 is the water intake part 101 and the protection wall 102. The gap portion G can be reliably closed. This makes it possible to suppress the intrusion of seawater from the gap portion G into the premises when an earthquake occurs.

  Further, according to the present embodiment, the membrane member 10 has the tension belt 14, and the tension belt 14 extends in a direction parallel to the third side 10c and the fourth side 10d, and the first side 10a and Since a plurality of them are arranged at a predetermined interval in a direction parallel to the second side 10b, a tension is applied to the film member 10. Therefore, for example, when the membrane member 10 is arranged in a curved state, the curved state can be maintained.

  Moreover, according to this embodiment, the fixing | fixed part 20 has the mounting plates 23 and 24 and the volt | bolts 25 and 26 which are fixing members which fix the sheet | seat material 11 and the tension belt 14 to the water part 101 and the protective wall 102, and a membrane member. 10, the portion between the adjacent tension belts 14 is provided with mounting plates 27 and 28 and bolts 29 and 30 which are fixing members for fixing the water portion 101 and the protective wall 102, so that the membrane member and the first structure Since the adhesion between the membrane member and the second structure is enhanced, it is possible to suppress the formation of a gap in the step portion of the tension belt, and to reliably suppress the intrusion of water from the gap portion.

  Moreover, according to this embodiment, since the membrane member 10 has the reinforcement belts 12 and 13 arrange | positioned in the direction parallel to the 1st edge | side 10a and the 2nd edge | side 10b, the intensity | strength of the membrane member 10 can be maintained. It becomes possible. Thereby, durability can be improved.

  The technical scope of the present invention is not limited to the above-described embodiment, and appropriate modifications can be made without departing from the spirit of the present invention. For example, in the above-described embodiment, the configuration in which the first structure is the water intake unit 101 and the second structure is the protective wall 102 has been described as an example. However, the present invention is not limited to this, and other structures are used. It may be.

DESCRIPTION OF SYMBOLS 10 Membrane member 11 Sheet material 12, 13 Reinforcing belt 12a, 14a Insertion hole 14 Tension belt 15 Watertight rubber plate 16 Cover sheet 20 Fixing portion 21 First fixing portion 22 Second fixing portions 23, 24, 27, 28 Holding plate 25, 26, 29, 30 Bolt 32 Resin member 100 Water stop device 101 Water intake portion 101a Water intake port 102 Guard wall 102a Fixing member 103 Foundation structure 104 Steel foundation 105 Seawall 106 Adjustment plate B Sea bottom G Gap portion Ga, Gb End surface W Seawater

Claims (6)

A gap portion formed between the first structure and the second structure constructed on the ground, and at both ends in a direction perpendicular to the opposing direction of the first structure and the second structure. A water stop device for stopping water in a gap portion having parallel end faces,
It is rectangular, the first side of the four sides is fixed to the first structure, the second side parallel to the first side is folded back and fixed to the second structure, and the first A third side different from the side and the second side contacts one end surface of the gap portion, and a fourth side contacts the other end surface of the gap portion, thereby closing the gap portion and vibrating. The folded portion is in a direction parallel to the third side and the fourth side in a state where the gap portion is closed following the change in the relative position between the first structure and the second structure. A membrane member that is deformable to move;
A water stop device comprising: a fixing portion that fixes and closely contacts between the membrane member and the first structure and between the membrane member and the second structure. The second structure includes a pair of foundation structures arranged with the first structure sandwiched therebetween, and the gap between the pair of foundation structures and vertically above the first structure. Having a beam portion arranged with a portion,
2. The water stop device according to claim 1, wherein the membrane member closes the gap portion between the beam portion of the first structure and the second structure. The first structure is a water intake provided in a coastal area,
The water stop device according to claim 1 or 2, wherein the second structure includes a protective wall provided above the water intake portion in a vertical direction.   The membrane member is in a state extending in a direction parallel to the third side and the fourth side, and a plurality of tensions arranged at predetermined intervals in a direction parallel to the first side and the second side. The water stop device according to any one of claims 1 to 3, further comprising a belt.   The fixing portion includes a fixing member that fixes the membrane member and the tension belt to the first structure and the second structure, and a portion between the adjacent tension belts of the membrane member. The water stop device according to claim 4, further comprising a structure and a fixing member that is fixed to the second structure.   The water stop device according to any one of claims 1 to 5, wherein the membrane member includes a reinforcing belt arranged in a direction parallel to the first side and the second side.

Images