KR102158274B1 - A transparent flood wall and construction method thereof - Google Patents

Abstract

The present invention relates to a transparent flood defense which enables tourists to enjoy surrounding scenery without blocking the same and has improved coupling means for coupling props for supporting a transparent defense, thereby preventing foreign substances from sticking thereto and increasing resistance to water during flooding, and a construction method thereof. The transparent flood defense comprises: a foundation structure; prop parts each consisting of a prop and a defense joint; coupling means for coupling defense holes of a transparent defense and the defense joints constituting the prop part; and support means each consisting of support means coupling portions coupled to support means coupling grooves of the foundation structure, support means support portions, and support means fixing portions. Therefore, it is possible to increase workability by fixing the transparent defense using the support means and the support portions, to increase workability and resistance to water pressure by forming bolt portions of the support means as first and second bolt portions and double-coupling the bolt portions, and to increase workability and worker convenience even in case of errors during processing and construction by forming, in a long-hole shape, first and second fixing holes constituting the support portions.

Description

A transparent flood wall and construction method thereof

The present invention improves the coupling means that combines the posts for supporting the transparent wall while being able to appreciate the surrounding landscape without disturbing the surrounding landscape, thereby preventing the trapping of foreign substances and increasing the resistance to water when the water overflows. It is about the construction method.

In general, in the vicinity of a river, a flood wall is installed to prevent a flood while it can be used as a passageway for pedestrians in normal times.

As a prior art for the above-described flood wall, a buoyancy chamber is formed inside such as Korean Patent Registration No. 10-10262530 hereinafter, referred to as'Patent Document 1'), and when the water level rises, the buoyancy part rises and the river water In a form that can prevent flooding into the paper, or while using it as a walking trail in normal times, such as Korean Patent No. 10-11760670 (hereinafter referred to as'Patent Document 2') or "Flood Prevention Moving Wall for Landscape Improvement" It was formed in various forms, such as those that stood up when flooded and used as a flood wall.

However, in the case of the above-described Patent Document 1, the floating wall has a structure that is buried in the lower part and rises only during a flood, so there is a problem that it is not possible to ensure the safety of pedestrians.

In addition, in the case of the flood prevention moving wall for landscape improvement, patent document 2, unlike the above-described floating wall, it is a form that can ensure the safety of pedestrians, but if the flood wall is erected late, overflowing river water is likely to flow into the paper. There was a problem with this.

In order to compensate for the above-described problems, Korean Patent Registration No. 10-156147 (hereinafter referred to as'Patent Document 3') has been proposed.

The patent document 3 comprises a level adjustment plate on the foundation structure, and includes a coupling member consisting of a foundation structure coupling bracket and a pillar coupling bracket, and a transparent water-blocking part and a pressure member between a plurality of posts at all times, such as a river. In addition to being able to appreciate, it was possible to obtain the effect of being able to selectively install posts of various shapes or sizes on the coupling member after the coupling member was fixedly coupled to the foundation structure.

(Patent Document 1) KR10-1026253 B1 floating wall

(Patent Document 2) KR10-1176067 B1 Flood prevention moving wall for landscape improvement

(Patent Document 1) KR10-1565147 B1 floating wall

However, in the case of Patent Document 3 described above, it is difficult to continuously view the surrounding landscape due to the pillars coupled between the transparent water-receiving portions, so there is a problem in that the problems of Patent Documents 1 and 2 are still as they are.

In addition, in order to connect the pillar and the transparent wall, the bolt and nut must be exposed in the direction of the river among the transparent walls, and the bolts and nuts exposed in this way are loosened when water overflows, or foreign matter between the bolt and nut, etc. Because of this, problems with many difficulties during maintenance were exposed.

The transparent flood barrier and its construction method according to the present invention for solving the above problems are composed of a structure in which the coupling means for connecting the transparent wall and the holding part is fastened in the opposite direction of the river around the transparent wall. The purpose of this is to provide a transparent flood barrier and a construction method thereof, which is easy to maintain and repair by preventing impingement of foreign substances without causing impact when flooding.

Another object of the present invention is to improve workability by inserting and fixing a supporting means into the foundation structure and fixing it using a supporting means when constructing a transparent wall on a foundation structure without digging a groove in the foundation structure. It is supposed to be.

Another object of the present invention is to increase the resistance by hydraulic pressure by fixing the transparent wall using the coupling means to the protective wall coupling portion of the holding unit in a structure in which bolts are double-fastened to the front and rear surfaces.

Another object of the present invention is to increase the workability when the bolt portion of the support means is composed of first and second bolt portions so that the transparent wall is fixedly coupled to the holding portion through the coupling means.

Another object of the present invention is to form the first and second fixing holes constituting the post in a long hole shape, so that the bolt part of the coupling means can be moved even if an error occurs during processing of the coupling hole and the post part of the transparent wall and errors when installing the post part. Since it can be fixedly coupled, it is possible to improve the workability by fixing the transparent wall to the holding part even without precise processing.

Another object of the present invention is to form the first fixing hole constituting the post in the form of a long hole, but by forming it in the form of a wavy long hole, when moving the bolt part when an error occurs when processing the coupling hole of the transparent wall and the post part, The bolt part is fixed without shaking by the shape, so that the convenience of work can be improved.

The present invention is composed of a structure in which the coupling means for connecting the transparent wall and the holding part is fastened in the opposite direction of the river with the transparent wall as the center, so that when the water overflows, impingement of foreign matter is prevented without causing an impact. It becomes easier...

In addition, when constructing a transparent wall on a foundation structure, the structure is constructed to fix the transparent wall by inserting and fixing the support means into the foundation structure, and then fixing it using the support, so it is possible to improve workability.

In addition, when the transparent wall using the coupling means is fixed to the protective wall coupling portion of the holding portion, the bolt portion is double-fastened to the front and rear surfaces, thereby improving resistance by water pressure.

In addition, it is possible to increase the workability when the bolt portion of the support means is composed of the first and second bolt portions so that the transparent wall is fixedly coupled to the holding portion through the coupling means.

In addition, the first and second fixing holes constituting the holding part are formed in the form of a long hole, so even if errors occur during processing of the coupling hole of the transparent wall and the holding part and errors when installing the holding part, the bolt part of the coupling means can be moved and fixedly connected. Even without processing, workability can be improved by fixing the transparent wall to the support.

In addition, the first fixing hole constituting the holding part is formed in a long hole shape, but by forming it in a wave pattern long hole shape, when moving the bolt part when an error occurs when processing the coupling hole of the transparent wall and the holding part, the bolt part It is a useful invention that can improve the convenience of work because it is fixed without shaking.

1 is a perspective view showing a transparent flood barrier according to the present invention.
Figure 2 is an exploded perspective view of Figure 1;
3 is an AA cross-sectional view of FIG. 1.
Figure 4 is an exploded view showing a coupling relationship between the coupling means and the support in the present invention.
5 is an exemplary view showing another embodiment of the first fixing hole of the barrier wall coupling portion.

Hereinafter, the configuration of the present invention will be described in more detail with reference to the accompanying drawings.

First, as shown in Figs. 1 to 2, the foundation structure 1 is formed in the form of a conventional concrete structure and has a U-shaped support means coupling groove 1a at the top extending in the longitudinal direction.

Next, the transparent wall 10 is arranged on the upper side of the basic structure 1 and is made of a transparent material, and has a structure in which a plurality of coupling holes 11 are formed in a vertical direction at both ends.

One or more of the transparent walls 10 may be arranged in a direction in which the support means coupling groove 1a of the foundation structure 1 extends, and each of the transparent walls 10 is formed in a form in which they face each other. In the case of loss, although not shown in the drawings, a sealing material may be further included.

Next, the holding portion 20 is formed to support the transparent wall 10 by being fixedly coupled to the upper side of the base structure 1 described above.

Such, the holding portion 20 is configured to support the transparent wall 10 is formed in two places at both ends of one transparent wall 10, in particular, in the position where the two transparent walls 10 abut It is configured to be able to support the transparent wall 10 by using the support portion 20 in one place.

The post part 20 as described above is fixedly coupled to the foundation structure 1, but is formed on the post 21 extending in the vertical direction and the post 21 to support the transparent wall 10. ).

The support 21 may be fixedly coupled by a conventional bolt (B) and a nut (N) for coupling to the basic structure (1).

In addition, the defense wall coupling portion 22 has a structure extending in the horizontal direction from a predetermined height of the pillar 21.

The protective wall coupling portion 22 is formed in the shape of a square pipe having a space portion 22a formed therein, and a first fixing hole 22b is formed in the front surface f at a position in contact with the transparent wall 10 , A second fixing hole 22c corresponding to the first fixing hole 22b is formed in the rear surface b.

Here, the first and second fixing holes 22b and 22c may be formed in a long hole shape extending in a horizontal direction. In particular, in the case of the first fixing hole 22b, a plurality of holes are formed as in FIG. 5. It can be formed into a long hole shape of a wave pattern by repeatedly perforating in the extending direction.

In addition, a working hole 22d may be further included in the upper surface t of the front surface f of the barrier wall coupling part 22 and a position adjacent to the upper surface t, and a cover for blocking the working hole 22d ( C) may be further included.

Next, the coupling means 30 is a configuration for coupling the above-described transparent wall 10 to the holding portion 20.

Therefore, the above-described coupling means 30 of the coupling hole 11 formed in the transparent wall 10 and the defense wall coupling portion 22 constituting the pillar portion 20 as shown in FIGS. 3 to 4 Packing 34, a washer 35 and a bolt portion 33 coupled to the first and second fixing holes 22b and 22c and a packing 34 disposed on the front and rear surfaces of the transparent wall 10 based on the transparent wall 10 It consists of a nut 36.

Here, the bolt portion 33 may be formed of first and second bolt portions 31 and 32 so as to be coupled and released.

That is, the first bolt part 31 forms a first bolt head 31a disposed in the river direction with respect to the transparent wall 10, and extends from the first bolt head 31a in the opposite direction of the river. The first outer screw coupling portion 31b coupled with the first fixing hole 22b and the nut 36 of the barrier coupling portion 22 constituting the packing 34, the washer 35, and the holding portion 20 as the outer circumferential surface ) Is formed, and a first inner threaded portion 31c is formed on the other side of the first bolt head 31a.

In addition, the second bolt portion 32 forms a second inner screw coupling portion 32c corresponding to the first inner screw coupling portion 31c of the first bolt portion 31, and a nut 36 to the outside. And a second outer screw coupling portion 32b is formed to be fixedly coupled to the second fixing hole 22c of the barrier coupling portion 22 constituting the post portion 20 by the washer 35.

Next, the support means 40 is inserted into the support means coupling groove (1a) formed in the foundation structure (1) and is fixedly coupled to the upper side of the foundation structure (1) to support the lower end of the transparent wall (10). It is structured to be able to.

Such, the support means 40 extends in a vertical direction and extends in the vertical direction of the lower side from the support means coupling portion 41 and the support means coupling portion 41 for supporting the lower end of the transparent wall 10 (1) The upper side of the base structure (1) extending in the horizontal direction from the support means support portion 42 inserted into the support means coupling groove (1a) and the support means coupling portion 41 and the support means support portion 42 While in contact with the support means fixing portion 43 fixedly coupled to the basic structure 1 by a fixing bolt 43a and a fixing nut 43b is made in a ┤ shape.

The support means 40 as described above may be made of stainless steel, and the support means 40 can be coupled and fixed after installing a waterstop material in the support means coupling groove 1a of the foundation structure 1 for water retention. have.

Looking at the construction method of the transparent flood barrier 100 made of the above configuration is as follows.

-Step 1

This step is a step of manufacturing the support means coupling groove (1a) in the basic structure (1).

The foundation structure (1) in this first step is a conventional concrete structure, and can be formed in advance using a formwork, etc. in the place of the support means coupling groove (1a) when pouring concrete, or through processing after the pouring and curing are completed. have.

Here, the support means coupling groove (1a) is such that the length of the transparent wall 10 installed on the foundation structure (1) extends continuously.

-Step 2

This step is a step of installing and fixing the support means 40 in the support means coupling groove 1a of the basic structure 1 described above.

That is, the support means coupling part 41 formed in the support means 40 is inserted into the support means coupling groove 1a of the basic structure 1, and the support arranged so as to contact the upper side of the foundation structure 1 The means fixing part 43 is fastened using a fixing bolt 43a and a fixing nut 43b to fix the support means 40 to the basic structure 1.

At this time, the support means 40 is made of a stainless steel material that does not easily rust, and a waterstop material (not shown in the drawing) is placed in the support means coupling groove 1a of the basic structure 1 to increase water resistance. After insertion, the support means coupling portion 41 of the support means 40 may be inserted.

-Step 3

This step is a step for installing the support portion 20 for supporting the transparent wall 10 on the upper side of the foundation structure (1).

That is, in the present invention, the lower side of the support 21 constituting the support 20 may be fixedly coupled using a bolt (B) and a nut (N).

-Step 4

This step is a step of completing the construction by fixing the transparent wall 10 using the holding portion 20 and the coupling means 30 coupled to the basic structure (1).

In order to carry out this step, the transparent wall 10 is disposed at the position where the support means 40 and the support part 20 are installed, and the lower end of the transparent wall 10 is the support means support part 42 of the support means 40 After intimate contact so that it can be supported by the first of the bolt part 33 of the coupling means 30, the coupling hole 11 of the transparent wall 10 and the defense wall coupling part 22 constituting the post part 20 , 2 After being coupled to the fixing holes (22b, 22c), the packing 34, the washer 35, and the nut 36 are used to fasten.

Here, the transparent wall 10 and the holding part 20 in the fourth step are not manufactured through precision processing, and according to the site conditions, even when the holding part 20 is installed, the holding part ( 20) may not be installed, resulting in some errors.

The first and second fixing holes 22b formed in the front and rear surfaces (f, b) of the barrier coupling part 22 constituting the holding part 20 in order to overcome such errors in processing and construction errors according to the site conditions. Is formed in the form of a long hole extending in the horizontal direction, in particular, the first fixing hole 22b is formed in a wavy shape by repeatedly perforating a plurality of holes in the direction in which the long hole is extended.

Therefore, the bolt portion 33 constituting the coupling means 30 is not fastened due to errors in processing and installation when the transparent wall 10 and the holding portion 20 are coupled using the coupling means 30. If not, by moving and fastening the bolt portion 33 in the first and second fixing holes 22b and 22c formed in a long hole shape, work is possible even in the event of an error, thereby improving workability.

In particular, since the first fixing hole 22b has a long hole in the form of a wave pattern by perforating a plurality of holes, the bolt part 33 can be fixed at a certain position when the bolt part 30 is moved. In the arranged state, the work can be performed while the operator maintains the position of the bolt portion 33 as it is, so that the construction can be completed in a state in which constructability and convenience of the operator can be improved.

In addition, the bolt portion 33 constituting the coupling means 30 in the fourth step is formed by dividing into the first and second bolt portions 31 and 32 to further increase the bearing capacity when the river overflows. .

That is, the bolt portion 33 constituting the coupling means 30 is a first bolt portion consisting of a first bolt head 31a, a first outer screw coupling portion 31b, and a first inner screw coupling portion 31c. The first bolt part 31 is formed by dividing into a second bolt part 32 consisting of 31, a second outer screw coupling part 32b, and a second inner screw coupling part 32c, and the first bolt part 31 is a transparent wall 10 And fixedly coupled to the first fixing hole (22b) of the barrier coupling portion 22 of the holding portion 20, the second bolt portion 32 is coupled to the first bolt portion 31, and then the barrier wall coupling portion 22 It can be coupled to the second fixing hole (22c) of to increase the support.

Looking at this in more detail, in the fourth step, the coupling between the transparent wall 10 and the support portion 20 through the coupling means 30 is the first bolt portion of the bolt portion 33 constituting the coupling means 30 After the first bolt head (31a) of (31) is arranged to be located in the direction of the river among the transparent walls (10), the first outer screw coupling part (31b) is attached to the coupling hole (11) of the transparent wall (10) and the support part. The first fixing hole (22b) of the barrier coupling portion (22) constituting 20 is coupled so as to be disposed in the space portion (22a), but the first bolt head (31a) of the first bolt portion (31) and The washer 35, the packing 34, the packing 34, and the washer 35 are sequentially coupled between the transparent wall 10 and between the transparent wall 10 and the front surface of the protective wall coupling part 22, and the protective wall The first bolt part 31 is coupled to the first outer threaded part 31b of the first bolt part 31 through the working hole 22d formed on the upper surface t of the coupling part 22. ) Through the transparent wall 10 and the barrier wall coupling portion 22 constituting the holding portion 20 is first fixedly coupled.

In addition, the second outer screw coupling portion (32b) formed in the second bolt portion (32) of the bolt portion (33) constituting the coupling means (30) and the second fixing hole (22c) of the barrier wall coupling portion (22) Inserted into the space portion (22a) through, but after coupling the second inner screw coupling portion (32c) of the second bolt portion (32) to the first inner screw coupling portion (31c) formed on the first bolt portion (31), The second bolt part 32 is fixedly coupled to the second fixing hole 22c formed in the rear surface (b) of the barrier wall coupling part 22 using the washer 35 and the nut 36, and the transparent wall 10 and the support part It is possible to securely couple the protective wall coupling portion 22 constituting the (20) secondary.

The transparent flood barrier 100 according to the present invention having the above configuration allows viewing of the surrounding landscape through the transparent wall 10 made of a transparent material, and prevents flooding of water when river water is flooded. Can be obtained.

In particular, in the present invention, the bolt/nut constituting the coupling means 30 for fastening the transparent wall 10 is not arranged in the river direction, but is configured to fasten the nut 36 in the opposite direction of the river. Therefore, when water overflows in the river direction, foreign matters in the river do not get jammed, so that maintenance costs can be reduced, as well as preventing the disconnection due to impact.

In addition, since the transparent wall 10 is constructed using the support means 40, the support unit 20, and the coupling means 30 when the transparent wall 10 is standing, the effect of making the construction easier can be obtained. do.

Moreover, the bolt portion 33 that is coupled to the barrier wall coupling portion 22 constituting the post portion 20 is formed in a form capable of fastening and releasing with the first and second bolt portions 31 and 32. Since it is inserted into the 1st and 2nd fixing holes 22b and 22c and double-fastened, it is possible to further increase the resistance against water pressure when water overflows.

In addition, since the first and second fixing holes 22b and 22c are formed in a long hole shape, the bolt part 33 is movable in the horizontal direction, so the processing position of the coupling hole 11 of the transparent wall 10 is not precise. Or, even when an error occurs above the installation of the holding part 20, the construction may be smoothly performed.

In particular, in the case of the first fixing hole 22b, a plurality of holes are drilled in a direction in which the long hole is extended to form a long hole in the form of a wave pattern, so that the transparent wall 10 and the support portion 20 are coupled to each other. ), it is possible to increase the convenience and constructability of the constructor because the bolt part 33 is independently maintained in a state where it is disposed in a fastening position during the bonding process.

Although the above-described embodiment has been described for a preferred embodiment of the present invention, the present invention is not limited thereto, and it is specified that the present invention can be changed in various forms without departing from the technical spirit of the present invention.

1: foundation structure 1a: support means coupling groove
10: transparent wall
11: coupling hole
20: holding part
21: holding
22: defense wall coupling portion
22a: space part 22b: first fixing hole 22c: second fixing hole 22d: working hole
f: front b: rear t: top
30: coupling means
33: bolt part
31: first bolt part
31a: first bolt head 31b: first outer threaded portion
31c: first inner threaded portion
32: second bolt part
32b: second outer threaded portion 32c: second inner screwed portion
34: packing 35: washer 36: nut
40: support means
41: support means coupling portion 42: support means support portion
43: support means fixing part
43a: fixing bolt 43b: fixing nut
100: transparent flood barrier

Claims (8)

A foundation structure including a support means coupling groove in the longitudinal direction;
A transparent wall of a transparent material disposed on the upper side of the foundation structure and including a plurality of coupling holes formed at both ends in a vertical direction;
It is fixedly coupled to the upper side of the foundation structure, but is configured in the form of a square pipe including a space portion therein to support and fix the transparent wall by being coupled to the pillar extending in the vertical direction and the pillar, and on the front side contacting the coupling hole of the transparent wall A post portion including a barrier wall coupling portion in which a first fixing hole is formed and a second fixing hole corresponding to the first fixing hole is formed on a rear surface of the other side;
A bolt portion coupled to the first and second fixing holes formed in the barrier wall coupling portions constituting the coupling hole of the transparent wall and the pillar portion, and a packing formed in front and rear of the transparent wall, a washer, and a nut. Way;
Between the support means coupling part coupled to the support means coupling groove of the basic structure, the support means support part configured to support the transparent wall extending in a vertical direction below the support means coupling part, and the support means coupling part and the support means support part It is formed to extend in the horizontal direction in the support means to be in contact with the upper surface of the foundation structure, the support means fixed to the foundation structure by a fixing bolt and a fixing nut, a support means configured in a ┤-shaped shape;
A working hole is further formed on an upper surface adjacent to the front of the barrier wall engaging portions constituting the holding portion so that the nut coupled to the bolt portion of the engaging means can be coupled to the bolt portion in the space portion of the barrier wall engaging portion,
The bolt portion of the coupling means is formed to extend from the first bolt head located in the direction of the river with the transparent wall in the direction of the river and the first bolt head to the outer circumferential surface of the protective wall coupling portion constituting the packing, washer, and support. A first bolt portion forming a first outer screw coupling portion to be coupled with the formed first fixing hole and the nut and forming a first inner screw coupling portion to the other side of the first bolt head, and the first inner screw coupling of the first bolt portion It is a second bolt part that forms a second inner screw coupling part that is coupled to the part on the inside, and forms a second outer screw coupling part that is fixedly coupled to the second fixing hole of the barrier wall coupling part constituting the post by a nut and a washer on the outside. A transparent flood barrier characterized by being made up of.
The transparent flood barrier of claim 1, wherein the first fixing hole formed on the front side of the barrier wall coupling part constituting the post and the second fixing hole formed on the rear side are formed in a long hole shape.
The method of claim 2, wherein the first fixing hole in the form of a long hole formed in the front of the barrier coupling part constituting the holding part is formed in a long hole shape of a wave pattern by repeatedly punching a plurality of holes in the direction in which the long hole is extended. A transparent flood barrier characterized in that it is configured to be fixed after moving and moving the bolts constituting the coupling means.
delete delete In the construction method for constructing the transparent flood barrier of claim 1,
A first step of forming a support means coupling groove in the foundation structure;
A bolt for fixing the support means fixing part that contacts the upper side of the foundation structure after arranging the support means fixing part of the support means comprising the support means coupling part, the support means support part and the support means fixing part in the support means coupling groove of the foundation structure And a second step of fixing and installing on the upper side of the foundation structure using a fixing nut.
A third step of fixing and coupling the support to the upper side of the foundation structure installed in the second step;
In a state in which the lower end of the transparent wall is in close contact with the support portion of the support means installed in the second step so that the lower end of the transparent wall can be supported, the bolt portion of the coupling means constitutes a coupling hole formed in the transparent wall and a holding portion. After being coupled to the first and second fixing holes of the barrier coupling portion, a fourth step of completing the construction by fixing and coupling using packings, washers and nuts;
In the fourth step, the first bolt head of the first bolt part of the bolt part constituting the coupling means is arranged so that the first bolt head of the first bolt part is located in the direction of the river among the transparent walls, and then the first outer screw is connected. Combining the part so as to be disposed in the space by passing through the first fixing hole of the coupling hole of the transparent wall and the protective wall coupling part constituting the post,
Washers, packings, packings, and washers are sequentially combined between the first bolt head of the first bolt part and the transparent wall and between the front surface of the transparent wall and the barrier wall coupling part,
The nut is coupled to the first outer threaded portion of the first bolt portion through a working hole formed on the upper surface of the barrier wall coupling portion, and the barrier wall coupling portion constituting the transparent wall and the support portion is first fixedly coupled through the first bolt portion,
Inserting the second outer screw coupling portion formed in the second bolt portion of the bolt portion constituting the coupling means into the space portion through the second fixing hole of the barrier wall coupling portion,
After attaching the second inner threaded portion of the second bolt portion to the first inner screwing portion formed in the first bolt portion, the second bolt portion is fixedly coupled to the second fixing hole formed on the rear surface of the barrier wall joint using a washer and a nut to be transparent. A method of constructing a transparent flood barrier characterized by a secondary fixed coupling of the barrier coupling portion constituting the wall and the support portion.
The method of claim 6, wherein in the fourth step, the first and second fixing holes at the front and rear surfaces of the barrier wall coupling parts constituting the holding part are formed in a form of long holes extending in a horizontal direction, and the first fixing hole comprises a plurality of holes. It is formed in a wave shape by repeatedly perforating in the direction in which the long hole is extended, and when the horizontal position between the transparent wall and the column is not aligned when the transparent wall and the protective wall connecting portion constituting the column portion are coupled through the connecting means, the bolt portion of the connecting portion is waved A method of constructing a transparent flood defense wall characterized by correcting the position while moving in the horizontal direction in the first fixed hole made of a patterned long hole.
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