Construction methods for watertight walls

Abstract

This invention provides a construction method for a watertight wall that allows for easy construction of support columns and watertight panels while ensuring watertightness, and offers excellent constructability, cost-effectiveness, and quality (watertightness). [Solution] In a construction method for a watertight wall 10 constructed by erecting watertight panels 2 between adjacent support columns 1, the support column 1 consists of a flange portion 11 and a web portion 12, and the watertight panel 2 has watertight means at its left and right ends and bottom surface, and the end of the watertight panel 2 is constructed by pressing and fixing it to the flange portion 11b (or 11a) of the support column 1 with a pressing member 3. A pressing bolt 3 is screwed into the inner flange portion 11a of the support column 1 so as to be able to move back and forth, pressing the end of the watertight panel 2 to the outer flange portion 11b on the water contact side, thereby tightening and fixing the left and right ends of the watertight panel 2 to the outer flange portion 11b, respectively, with the pressing bolt 3.

Description

Technical Field

[0001] The present invention belongs to the technical field of water stop wall construction methods, in which water stop panels are erected between adjacent support posts to construct the water stop wall.

Background Art

[0002] Water stop walls are installed to prevent inundation damage to buildings, roads and the like in coastal areas caused by river floods from heavy rain or typhoons, tsunamis, storm surges and the like near coasts. For the water stop wall, water stop panels are erected (dropped in) between a plurality of support posts arranged at predetermined intervals, and a water stop material made of rubber or the like provided on the support post side is interposed between the support post and the water stop panel to prevent water intrusion, which is a common practice (see, for example, Patent Documents 1 and 2).

[0003] As shown in Figure 4 and the like, Patent Document 1 discloses a translucent breakwater fence having a configuration in which between support posts 10 arranged at predetermined intervals, transparent resin folded plates 16, 18 each formed by molding a transparent resin plate into a continuous trapezoidal folded plate shape are arranged continuously in the vertical direction, and are overlapped and brought into close contact at the inclined portions of the folded plates, and assembled into a panel shape in which four sides are fixed and integrated to a frame hardware 14 with bolts 20 via mounting hardware 24, 26 for fixing the transparent resin folded plates, and a sponge rubber packing 28 serving both for water stop and insulation is sandwiched between the frame hardware 14 of the panel 12 integrated with the support posts 10 and fixedly arranged with bolts 30 (see Claim 1 and the like).

[0004] Patent Document 2 discloses a waterproof panel fence structure comprising a plurality of support columns 2, a waterproof panel 3 installed between the plurality of support columns 2, and a fitted bearing member 4 attached to the front side A facing the direction of water ingress. Each of the plurality of support columns 2 has a groove 24 extending in the longitudinal direction of the support column 2, and a pair of grooves 24 are provided between adjacent plurality of support columns 2, and a water-stopping material 25 extending in the longitudinal direction of the support column 2 is provided inside the groove 24 and protruding from the front side A facing the direction of water ingress. The waterproof panel 3 is fitted into the pair of grooves 24, so that the back portion 3a of the waterproof panel 3 abuts against the water-stopping material 25 inside the groove 24 and is bearing pressure from the water-stopping material 25 on the back side B facing the opposite direction of water ingress (see Claim 1, etc.). [Prior art documents] [Patent Documents]

[0005] [Patent Document 1] Japanese Patent Publication No. 2008-196236 [Patent Document 2] Japanese Patent Publication No. 2014-181535 [Overview of the project] [Problems that the invention aims to solve]

[0006] As described in detail in paragraph

[0021] of the specification, the transparent wave-breaking fence according to Patent Document 1 has a structure in which a box-shaped receiving fitting 24 of the same shape that can closely conform to the inner shape of the transparent resin corrugated sheet 16 is placed on the inside of the transparent resin corrugated sheet 16, and a retaining fitting frame 26 of the same shape is placed on the outside thereof to sandwich the transparent resin corrugated sheet 16 in a planar manner, and the center of the inclined part of the corrugated sheet shape is fixed with a bolt 30. The method of fixing to the support column (H-shaped steel) 10 is to fix it with a bolt 32 via the box-shaped receiving fitting 24. Therefore, when considering the watertightness of the transparent resin corrugated sheet panels 12 related to the light-transmitting breakwater, each component (transparent resin corrugated sheet 16, box-type receiving hardware 24, and retaining hardware frame 26) needs to be in close contact with the others. This requires high manufacturing precision during the production of each component, leading to increased costs and other issues that make the process complicated and uneconomical.

[0007] The waterproof panel fence waterproofing structure described in Patent Document 2 has a configuration in which the waterproofing material 25 is attached to the support post 2 side. However, when installing the waterproof panel 3 into the groove 24 of the support post 2, there is a problem that the waterproofing material 25 may peel off, fall off, or be damaged, which could lead to a decrease in watertightness.

[0008] Therefore, the present invention was devised in view of the problems of the background technology described above, and its objective is to provide a construction method for a watertight wall that is easy to construct while ensuring watertightness by constructing support columns and watertight panels, and is excellent in terms of constructability, economy, and quality (watertightness). Furthermore, by introducing the water-stopping mechanism on the panel side rather than the support column side, the water-stopping mechanism is not damaged, and the method can flexibly respond to construction errors in the support columns (column pitch, displacement, twisting), thereby providing a construction method for a water-stopping wall that is excellent in terms of constructability, economy, rationality, and quality (water-stopping ability). [Means for solving the problem]

[0009] As a means to solve the above problems, the construction method for a watertight wall according to the invention described in claim 1 is a construction method for a watertight wall in which watertight panels are erected between adjacent support columns, wherein the support column consists of a flange portion and a web portion, The aforementioned water-stopping panel is provided with water-stopping means at its left and right ends and bottom surface. The water-stopping panel is constructed by pressing and fixing its end to the flange portion of the support column using a pressing member. The invention described in claim 2 is characterized in that, in the construction method for a watertight wall described in claim 1, a push bolt is screwed into the inner flange portion of the support column so as to be able to move back and forth, thereby fastening and fixing the left and right ends of the watertight wall to the outer flange portion using the push bolt.

[0010] The invention described in claim 3 is characterized in that, in the construction method for a watertight wall described in claim 1, the support column is made of an H-shaped steel, an I-shaped steel, a C-shaped steel, an angle steel, or a steel material formed by integrating the webs of two C-shaped steels back to back.

[0011] The invention described in claim 4 is a method for constructing a watertight wall as described in claim 1, characterized in that the watertight panel has vertical flanges at its left and right ends.

[0012] The invention described in claim 5 is characterized in that, in the construction method for a watertight wall described in claim 1, the watertight panel is a liner plate, corrugated plate, deck plate, keystone plate, plank plate, or steel plate.

[0013] The invention described in claim 6 is a construction method for a watertight wall described in claim 1, wherein the watertight panel has vertical flanges at its left and right ends, and the vertical flanges, a watertight member provided on its outer surface, and an end plate further provided on its outer surface are tightly joined in a sandwich-like manner, and a watertight member is provided on the bottom surface of the watertight panel.

[0014] The invention described in claim 7 is characterized in that, in the construction method for a watertight wall described in claim 6, the watertight member provided on the outer surface of the vertical flange is formed to protrude beyond the vertical flange and the end plate into the flange portion of the support column when in the state of close contact.

[0015] The invention described in claim 8 is characterized in that, in the construction method for a watertight wall described in claim 1, a panel fixing bracket to be placed on the top surface of the watertight wall is attached to the support column.

[0016] The invention described in claim 9 is characterized in that, in the construction method for a watertight wall described in claim 1, a pivot plate is interposed between the watertight panel and the pressing member to distribute the pressing force of the pressing member. The invention described in claim 10 is characterized in that, in the construction method for a watertight wall described in claim 1, the pushing member is a spherical support structure comprising a spherical body and a spherical seat, and the watertight panel can be tilted relative to the support column in a range of 0° to 15° in a plan view. [Effects of the Invention]

[0017] The watertight wall construction method according to the present invention provides the following effects. (1) By introducing the water-stopping mechanism to the panel side, the structure easily absorbs construction errors (pitch, displacement, twist) of the support column simply by pressing and fixing the water-stopping panel against the flange portion of the support column with a pressing member such as a pressing bolt. Therefore, it is possible to realize a construction method for a water-stopping wall that is rational, flexible, and of high quality (water-stopping). (2) A watertight wall can be easily constructed by sequentially performing the following steps: erecting the support columns, installing (dropping in) the watertight panels, and pressing and fixing them with a pressing member. Moreover, each of the above steps can be performed to construct the watertight wall from one side (one direction), and can be done manually, so it is excellent in terms of constructability, work efficiency, and safety, and a watertight wall can be easily constructed even in places close to structures or in places with difficult construction conditions. In addition, since the components can be easily replaced, it is also excellent in terms of maintainability. To further explain the effect of being able to construct a water stop wall from the one side (one direction side), since the pressing and fixing operation by the pressing member can be performed from one side of the support column, the tightening operation can be performed on the opposite side (inner side) of the side in contact with water (outer side). Therefore, after the water stop wall is constructed, the pressing adjustment operation of the pressing member (operations such as retightening the pressing bolt) can be safely performed when a rise in water level is a concern, or even after the water level has risen. [Brief Description of the Drawings]

[0018] [Figure 1] It is a perspective view of the embodiment of the water stop wall construction method according to the present invention, viewed from the inner side direction. [Figure 2] It is a perspective view of the embodiment of the water stop wall construction method according to the present invention, viewed from the outer side (water contact side) direction. [Figure 3] It is an enlarged view of the main part of Figure 1. [Figure 4] It is an explanatory plan view of Figure 3. Note that the panel fixing bracket is omitted for convenience of description. [Figure 5] A is a perspective view showing the main part of the water stop panel according to the present invention, and B is an exploded perspective view of A. [Figure 6] A is a front view showing the liner plate used in the construction method of the water stop panel according to the present invention, B is a plan view of A, and C is a left side view of A. [Figure 7] A to E are respectively explanatory plan views showing the embodiments of the water stop wall construction method according to the present invention (in particular, examples of coping with construction errors of support columns). [Figure 8] A and B are respectively explanatory plan views showing different embodiments of the water stop wall construction method according to the present invention. [Modes for Carrying Out the Invention]

[0019] Next, embodiments of the water stop wall construction method according to the present invention will be described based on the drawings. [Embodiments]

[0020] The construction method for a watertight wall according to the present invention is a construction method for a watertight wall 10 in which watertight panels 2 are erected between adjacent support columns 1, as shown in Figures 1 to 5. The support columns 1 consist of flange portions 11 (11a, 11b) and web portions 12, and the watertight panels 2 are provided with watertight means at their left and right ends and bottom surface. The method is characterized in that the ends of the watertight panels 2 are pressed and fixed to the flange portions 11b (or 11a) of the support columns 1 by a pressing member 3. The pressing member 3 can preferably be a tension rod, a panel fixing bracket that is fixed by the elastic force of a metal plate, or a pressing bolt 3. The tension rod and the panel fixing bracket are installed between the inner (or outer) flange 11a (11b) and the end of the water-stopping panel 2, thereby pressing the end of the water-stopping panel 2 against the outer (or inner) flange portion 11b (11a). In this embodiment, the pressing bolt 3 is used, and the left and right ends of the water-stopping panel 2 are tightened and fixed to the outer flange portion 11b by the pressing bolt 3 which is screwed into the inner flange portion 11a of the support column 1 so as to be able to move back and forth. In this embodiment, the end of the water-stopping panel 2 is fixed to the outer flange 11b, but the invention is not limited to this, and the end of the water-stopping panel 2 can also be fixed to the inner flange 11a. Possible methods for fixing to the inner flange 11a include tightening and fixing the end of the water-stopping panel 2 to the inner flange 11a using a push bolt 3 that is screwed into the outer flange 11b so as to be able to move back and forth, or tightening and fixing to the inner flange 11a using an L-shaped bolt (pull-in bolt) that is screwed into the inner flange 11a so as to be able to move back and forth and has a hook portion that hooks onto the back side of the water-stopping panel 2.

[0021] The construction method for a watertight wall according to the present invention is based on the technical idea of ​​constructing a watertight wall with superior watertightness (quality) by introducing the watertight means on the panel side 2 rather than the support column 1 side, thereby preventing peeling, detachment, or damage to the watertight means that occurred when the watertight panel 2 was erected (dropped) onto the support column 1. Incidentally, in Figure 1, reference numeral 9 indicates a concrete foundation. In this embodiment, the support column 1 is embedded in the concrete foundation 9, but it is not limited to this method and can also be fixed with anchors. It is also possible to use a pile foundation.

[0022] In this embodiment, the support column 1 is preferably an H-shaped steel beam 1 having a flange portion 11 and a web portion 12. The size of the H-shaped steel beam 1 in this embodiment is, as an example, approximately H-100 × 100 × 6 × 8 mm and a height of approximately 1800 mm (of which approximately 300 mm is embedded in the concrete foundation 9). The support column 1 is not limited to H-shaped steel 1, but can be any member having a groove consisting of a flange portion and a web portion. Typical examples include I-shaped steel, C-shaped steel, or a steel material (groove-shaped member) formed by integrating the webs of two C-shaped steels back to back.

[0023] The water-stopping panel 2 preferably uses a liner plate having vertical flanges 21 at its left and right ends and horizontal flanges 24 at its upper and lower ends (see Figure 6). The size of the liner plate in this embodiment is, as an example, approximately 500 mm in length, 1570 mm in width, and 2.7 mm in thickness. Furthermore, the material used for the watertight panel 2 is not limited to the liner plate; any steel plate (plate material) with the required strength (rigidity) and equipped with the vertical flange 21 can be used in the same manner. For example, in the case of corrugated steel plates, structures can be provided that include corrugated plates, deck plates, keystone plates, and plank plates.

[0024] In this embodiment, the water-stopping means applied to the water-stopping panel 2 is configured such that the vertical flange 21, the water-stopping member 22 provided on its outer surface, and the end plate 23 further provided on its outer surface are tightly joined in a sandwich-like manner, and a water-stopping member 25 is provided on the bottom surface of the horizontal flange 24 of the water-stopping panel 2. Specifically, in the left and right directions of the water-stopping panel 2, the vertical flange 21, the water-stopping member 22 provided on its outer surface, and the end plate 23 further provided on its outer surface are tightly fitted together in a sandwich-like manner, and these are fastened together by passing bolts 7 (countersunk bolts in this embodiment) through them horizontally and securing them with nuts 8. In this embodiment, four bolts 7 are used, corresponding to the number of bolt holes 21a provided at equal intervals vertically in the vertical flange 21 of the liner plate. Four bolt holes are provided in the water-stopping member 22 and the end plate 23, respectively, at positions where the cores align with the bolt holes 21a of the liner plate. In addition, in this embodiment, a pivot plate 5 for distributing the pressing force of the push bolt 3 is bolted together via a spacer 6, utilizing the bolt holes 21a at the upper and lower ends of the four bolt holes 21a. Note that the number of bolt holes 21a is not limited to four and can be increased or decreased as appropriate depending on the structural design. On the other hand, a water-stopping member 25 is provided on the horizontal flange (bottom surface) 24 located at the lower end of the water-stopping panel 2, so as to cover the lower surface of the horizontal flange 24. Incidentally, the horizontal flange 24 is provided with a plurality of bolt holes 24a (10 in this embodiment) for fastening the horizontal flange 24 located at the upper end of the stacked water-stopping panels 2 to the water-stopping member 25 with bolts and nuts.

[0025] In this embodiment, as can be clearly seen in Figure 4, the water-stopping member (water-stopping rubber) 22 of the water-stopping panel 2 is formed to protrude beyond the outer flange portion 11b, beyond the vertical flange 21 and the end plate 23, when tightly joined. This is to ensure more reliable water-stopping performance. The water-stopping means in this embodiment is, of course, not limited to this, and it is sufficient to provide water-stopping means on the left and right ends and the bottom surface of the water-stopping panel 2. For example, it can also be implemented by directly attaching water-stopping members (water-stopping rubber) 22, 25 to the three sides. In other words, the water-stopping means used in this specification can be made of water-stopping resins, rubbers (natural or synthetic), or asphalt-based materials, and mainly refers to water-stopping rubber, and more specifically, (synthetic) sheet rubber or synthetic rubber foam with excellent conformability and resilience is preferably used. In this embodiment, an end plate 23 is provided on the outer surface of the water-sealing member 22, which is provided on the outer surface of the vertical flange 21, and the vertical flange 21, the water-sealing member 22, and the end plate 23 are tightly joined in a sandwich-like manner, but the embodiment is not limited to this. From a structural design standpoint, the embodiment can be carried out without the end plate 23 if the vertical flange 21 has a certain thickness (for example, 7 mm or more), but it is preferable to use it when the thickness is not very high (for example, about 2 to 5 mm), as in this embodiment. More specifically, when the water-stopping member 22 is made of sheet rubber, the portion to be formed by protruding is made of sheet rubber 22 that has been pre-formed into the shape shown in the illustrated example. In other words, the protruding portion of the sheet rubber 22 is formed to be wider than the width sandwiched between the vertical flange 21 and the end plate 23. The direction in which the width is increased may be towards the end plate 23 side (see Figure 4) or towards the vertical flange 21 side (not shown), but it is preferable to implement it with a thickness sufficient to cover at least the vertical flange 21 and the end plate 23, as shown in the illustrated example. Furthermore, it is preferable that the surface of the protruding portion that contacts the outer flange 11b has a curved chamfer shape over the entire width direction (at least at the corners). This is because it conforms well to the twisting of the support column 1 as shown in Figure 7E, which will be described later, and can exhibit good water-stopping properties. On the other hand, when the water-stopping member 22 is made of synthetic rubber foam, since the synthetic rubber foam 22 inherently has excellent conformability and resilience, it is sufficient to sandwich the synthetic rubber foam 22 between the vertical flange 21 and the end plate 23 while it is protruding toward the outer flange 11b side. Incidentally, in this embodiment, since a liner plate with a thin vertical flange 21 (2.7 mm) is used, an end plate 23 is employed. However, if the vertical flange 21 has a certain thickness (for example, 7 mm or more) and the end plate 23 is not employed, the rubber sheet 22 of the above form can be directly attached to the vertical flange 21 with an adhesive or the like.

[0026] Thus, as can be clearly seen in Figure 4, the water-stopping wall 10 according to this embodiment is constructed by screwing a push bolt 3 into the inner flange portion 11a (a pre-drilled bolt hole) of the support column 1 so that it can move back and forth, thereby tightening the push bolt 3 to secure the left and right ends of the water-stopping wall 2 to the outer flange portion 11b, respectively. In this embodiment, the water-stopping panels 2 are stacked in three layers vertically. The push bolts 3 are provided at the parts that fasten the upper and lower ends of each water-stopping panel 2. Thus, by fastening the four corners of each water-stopping panel 2 with the push bolts 3, the water-stopping panels 2 are securely and firmly pressed and fixed to the support column 1.

[0027] In this embodiment, the water-stopping panels 2 are stacked in three layers, but the structure is not limited to this, and the number can be increased or decreased as appropriate depending on the structural design. Furthermore, the support plate 5 is implemented with a length that spans two (or more) peaks (or valleys) of the corrugated liner plate used in the watertight panel 2, thereby distributing the pressing force of the push bolt 3 and preventing deformation (damage) of the liner plate. Therefore, depending on the strength, rigidity, shape (corrugated, flat) of the liner plate, or the structural design based on the twisting force of the push bolt 3, the watertight wall 10 can also be constructed without using the support plate 5.

[0028] Specifically, the construction method for the watertight wall 10 according to this embodiment involves first embedding the support columns (H-shaped steel) 1 into the concrete foundation 9 at predetermined intervals (approximately 2m in this embodiment), as shown in Figures 1 and 2. Next, the ends of the water-stopping panels 2 are sequentially dropped and stacked in the required number of layers (3 layers in this embodiment) along the grooves formed by the flange portion 11 and the web portion 12 of the support column 1. The water-stopping panels 2 positioned above and below each other, which have been sequentially dropped, are aligned with the bolt holes 24a provided in the horizontal flange 24 and fastened together with bolts and nuts via the water-stopping member 25. Next, once the preparations such as aligning the ends of the stacked water-stopping panels 2 are complete, the push bolts 3 are screwed into the corresponding corners of the water-stopping panels 2 (the bolt holes in the inner flange portion 11a of the support column 1), and each push bolt 3 is tightened and fixed toward the outer flange portion 11b. In this embodiment, as can be clearly seen in Figure 4, the water-stopping member 22 (or its protruding portion) of the water-stopping panel 2 comes into close contact with the inner surface of the outer flange portion 11b, thereby exhibiting a structure that reliably provides (ensures) water-stopping performance. Finally, a panel fixing bracket (anti-slip member) 4, which is placed on the top of the watertight wall 10, is joined to the support column 1. The panel fixing bracket 4 in this embodiment uses an angle material having a bottom portion and a side portion, with the bottom portion placed on both ends of the top surface (horizontal flange 24) of the watertight panel 2, which is installed at the topmost position, and the side portion being bolted to the web portion of the support column 1. The watertight wall 10 constructed in this manner can reliably block (waterproof) the intrusion of water, etc., that comes into contact with the watertight panel 2 and the outer flange 11b with the watertight members 22 and 25, thereby realizing a structure in which water, etc., cannot penetrate the web portion 12 of the watertight wall 10, and consequently, into the inside of the watertight wall 10. It should be noted that the construction procedures described above are merely one example.

[0029] The watertight wall constructed using the construction method described above is based on the basic form shown in Figure 7A (basic column span S = approximately 2m). Even if a misalignment of the column pitch 1 occurs (the rightmost column 1 is positioned 15mm to the right of its designated location), as shown in Figure 7B, the watertight panel 2 can be easily and securely fixed to the column 1 simply by mechanically performing the steps of dropping the watertight panel 2 into place and screwing in the push bolts 3 in sequence, thereby realizing a watertight wall that ensures watertightness. Furthermore, as shown in Figure 7C, even if a misalignment of the column pitch 1 occurs (the rightmost column 1 is positioned approximately 15mm to the left of its designated location), the watertight panel 2 can be easily and securely fixed to the column 1 simply by mechanically performing the steps of dropping the watertight panel 2 into place and screwing in the push bolts 3 in sequence, thereby realizing a watertight wall that ensures watertightness. Furthermore, as shown in Figure 7D, even if the support column is misaligned forward (or backward) (misalignment amount T = approximately 10 mm), the water-stopping panel 2 can be easily and securely fixed to the support column 1 simply by mechanically performing the steps of dropping the water-stopping panel 2 into place and screwing in the push bolts 3 in sequence, thereby realizing a water-stopping wall that ensures watertightness. Moreover, as shown in Figure 7E, even if the support column is twisted (counterclockwise twist amount U = approximately 5 mm forward misalignment), the water-stopping panel 2 can be easily and securely fixed to the support column 1 simply by mechanically performing the steps of dropping the water-stopping panel 2 into place and screwing in the push bolts 3 in sequence, thereby realizing a water-stopping wall that ensures watertightness.

[0030] Furthermore, the push bolt (push member) 3 can be made into a spherical support structure (swivel adjuster) equipped with a spherical body and a spherical seat, and as shown in Figures 8A and 8B, the water-stopping wall 10 can be made into a structure in which the water-stopping panel 2 can be tilted relative to the support column 1 in a range from 0° to 15° (0° < θ ≤ 15°) (preferably up to about 10°) in a plan view, thereby ensuring water-stopping. Specifically, the push bolt 3 in Figures 8A and 8B is composed of a bolt portion whose tip is formed into a spherical body (ball shape) and a socket portion provided on the water-stopping panel 2 side and equipped with a spherical seat into which the spherical body is slidably fitted.

[0031] While embodiments of the present invention have been described above with reference to the drawings, it should be noted that the present invention is not limited to the illustrated examples and includes design modifications and variations in application that are commonly practiced by those skilled in the art, without departing from the technical spirit thereof. For example, in this embodiment, a straight-type water-stopping panel (liner plate) 2 is used, but it is not limited to this, and a water-stopping wall can also be constructed using R-shaped (arc-shaped in plan view) or L-shaped (L-shaped in plan view) water-stopping panels as appropriate depending on the installation location, etc. [Explanation of Symbols]

[0032] 1 post 11 Flange section 11a Inner flange section 11b Outer flange section 12 Web Department 2. Water-stopping panel 21 Vertical flange 21a Bolt hole 22. Water-stopping components (water-stopping rubber) 23 End plate 24 horizontal flange 24a Bolt hole 25. Water-stopping components (water-stopping rubber) 3. Pushing member (push bolt) 4 Panel fixing brackets 5. Support plate 6 Spacers 7 volts 8 nuts 9. Concrete foundation 10 Watertight wall S Basic Span T displacement U-shaped twist amount

Claims

1. In a construction method for a watertight wall, in which watertight panels are erected between adjacent support columns, The aforementioned support column consists of a flange portion and a web portion. The aforementioned water-stopping panel is provided with water-stopping means at its left and right ends and bottom surface. A method for constructing a watertight wall, characterized in that the end of the watertight panel is pressed and fixed to the flange portion of the support column by a pressing member.

2. A method for constructing a watertight wall according to claim 1, characterized in that a push bolt is screwed into the inner flange portion of the support column so as to be able to move back and forth, thereby fastening and fixing the left and right ends of the watertight panel to the outer flange portion using the push bolt.

3. The construction method for a watertight wall according to claim 1, characterized in that the support column is made of an H-shaped steel, an I-shaped steel, a C-shaped steel, an angle steel, or a steel material formed by integrating the webs of two C-shaped steels back to back.

4. The method for constructing a watertight wall according to claim 1, characterized in that the watertight panel has vertical flanges at its left and right ends.

5. The method for constructing a watertight wall according to claim 1, characterized in that the watertight panel is a liner plate, corrugated plate, deck plate, keystone plate, plank plate, or steel plate.

6. The method for constructing a watertight wall according to claim 1, characterized in that the watertight panel has vertical flanges at its left and right ends, and the vertical flanges, a watertight member provided on its outer surface, and an end plate further provided on its outer surface are tightly joined in a sandwich-like manner, and a watertight member is provided on the bottom surface of the watertight panel.

7. The method for constructing a watertight wall according to claim 6, characterized in that the watertight member provided on the outer surface of the vertical flange is formed to protrude beyond the vertical flange and the end plate into the flange portion of the support column when in the state of close contact.

8. A method for constructing a watertight wall according to claim 1, characterized in that a panel fixing bracket to be placed on the top surface of the watertight wall is joined to the support column.

9. A method for constructing a watertight wall according to claim 1, characterized in that a pivot plate for distributing the pressing force of the pressing member is interposed between the watertight panel and the pressing member.

10. The method for constructing a watertight wall according to claim 1, characterized in that the pressing member is a spherical support structure comprising a spherical body and a spherical seat, and the watertight panel can be tilted relative to the support column in a range of 0° to 15° in a plan view.

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