JP2023004746A - Tide embankment and construction method thereof - Google Patents

Abstract

To provide a preferable tide embankment and a construction method thereof, the tide embankment provided with a transparent plate placed on an upper part of an embankment, allowing a construction to be made in a simple performance and a construction period at the site to be remarkably reduced.SOLUTION: A construction method comprises: fixing a metal frame body 20 of a cross section in a generally U-shape on an upper part of an embankment 2 in a state of having a space opened upward inside; inserting lower edge parts 10a of respective transparent plates 10 and size changeable members 33 allowing sizes in a thickness direction of each of the transparent plates to be changed into the inside of the metal frame body 20; and fixing each of the transparent plates 10 on the metal frame body 20 by pressing the lower edge parts 10a with the size changeable members 33. In accordance with the present invention, the metal frame body 20 is installed on the upper part of the embankment 2 by fixing it with anchor bolts 3 and the like.SELECTED DRAWING: Figure 1

Description

TECHNICAL FIELD The present invention relates to a seawall (including a freshwater waterproof wall) in which a transparent plate (transparent resin plate or glass plate) is arranged on top of a concrete embankment, and a construction method thereof.

2. Description of the Related Art In areas where there is a risk of flooding due to storm surges, floods, or the like, it is widely practiced to build seawalls in seas and rivers to prevent intrusion of water. A seawall is generally made of concrete or the like, but if it is made of only concrete, it does not look good, and even when the water level rises, it is not possible to see the state of the sea or rivers through the seawall. Therefore, Patent Literature 1 below proposes a seawall partially using a transparent plate such as acrylic.

Patent Literature 1 describes a seawall with a transparent plate having the configuration shown in FIG. 11 . The tidal wall consists of 1) a groove (outer groove) 3' formed on the upper part of a concrete embankment 2' on the seashore or river bank, and 2) inside the groove 3', a substantially U-shaped cross section is formed. The metal frame 20' is inserted, 3) the mortar 5' or the like is poured inside the groove 3' and outside the metal frame 20' and solidified, and 4) the fixed metal frame 20' is fixed. The lower edge 10a' of the transparent plate 10' is inserted inside and restrained using a screw-type pressing member 33' or the like to attach the transparent plate 10' to the top of the bank 2'. .

Japanese Patent No. 6778663

Regarding the sea wall shown in Fig. 11, it is necessary to form a groove in the upper part of the embankment at the site where the embankment is built, and to accurately determine the position and angle of the metal frame to be inserted and fixed inside the groove. . When multiple transparent plates are arranged side by side along the length of the embankment, only the lower edge of the transparent plate is supported. This is because it is not possible to place the .
Due to the need to accurately determine the position of the metal frame, in the seawall of FIG. 11, a plurality of bolts 4' capable of adjusting the amount of protrusion are attached to the outside of the metal frame 20'. By adjusting the amount of projection of these bolts 4', the position and angle of the metal frame 20' inside the groove 3' are determined.

However, the on-site work of digging a trench in the upper part of the embankment, installing a metal frame while adjusting the position inside the trench, and then hardening it with mortar or the like is not necessarily easy. Depending on the weather, there may be days when the work is difficult, and curing is required until the mortar hardens, so it takes a considerable number of days to insert the lower edge inside the metal frame and attach the transparent plate. become.

An object of the present invention is to provide a preferable seawall with a transparent plate arranged on the upper part of the embankment, which can be constructed by simple work and which can greatly shorten the construction period at the site, and a method of constructing the same. is to provide

The tide barrier of the invention comprises a plurality of quadrilateral transparent plates (including resin plates and glass plates, including translucent ones) arranged on the upper part of the embankment,
・ A metal frame having a substantially U-shaped cross-sectional shape is fixed to the upper part of the bank with an upwardly open space inside, and the lower edge of each transparent plate and the thickness direction of each transparent plate a dimension changing member capable of changing the dimension of the metal frame is inserted inside the metal frame, and each of the transparent plates is fixed to the metal frame by pressing the lower edge of the transparent plate with the dimension changing member;
・ And, the metal frame is installed on top of the embankment by being fixed with anchor bolts or by being embedded in the precast concrete blocks that make up the embankment. be.
An example of the present invention is shown in FIGS. 1, 5 and the like. That is, a metal frame is fixed to the upper part of the embankment with anchor bolts (Fig. 1), or a metal frame is fixed by embedding it in a precast concrete block (Fig. 5), and a transparent plate is placed inside each metal frame. The transparent plate is fixed by inserting the lower edge with the size changing member and pressing the lower edge of the transparent plate with the size changing member.

According to the seawall of the present invention, the work of installing the metal frame for fixing the transparent plate on the top of the embankment is simplified, and it is easy to secure the accuracy of the position and angle of the metal frame. period can be shortened. Unlike the example described in Patent Document 1, there is no need to dig a groove on the top of the embankment on site, and the metal frame is fixed to the embankment on site with anchor bolts, or the metal frame is embedded in the factory. This is because it is sufficient to simply install precast concrete blocks on site. When fixing the frame with anchor bolts, the position and angle of the metal frame can be adjusted by providing an adjustment margin in the bolt insertion hole provided in the metal frame, or by providing an adjustment margin between the frame and the bank. This can be done by sandwiching appropriate thickness adjusting plates (shims), and no curing period is required. In addition, when using precast concrete blocks, it is not difficult to increase the accuracy of the position and angle of the frame when manufacturing the same blocks in the factory. The necessary position adjustment can be achieved with
In addition, the tide barrier of the present invention, in which a transparent plate is arranged on the upper part of the embankment, can prevent flooding up to a height that reaches (the upper part of) the transparent plate, so it has a high tide-proof capability. be. In addition, it is excellent in safety in that it is possible to grasp the alert level by looking at the state of the sea and rivers in the event of a disaster.

Concerning the above seawall,
・ The dimension-changing member presses against the lower edge of each transparent plate at a plurality of locations spaced apart in the length direction of the embankment and also at a plurality of locations spaced apart in the height direction. It is preferable that a plurality of them are arranged in the frame.
FIGS. 3, 8, etc. show examples in which the dimension changing members are arranged in such a manner.
The dimension changing member can change the dimension in the thickness direction of the transparent plate inside the metal frame. Inflatable bodies that change with body pressure or changes in tissue or chemical structure and the like can be used.

Dimension changing members for pressing the lower edge of the transparent plate are generally arranged at a plurality of locations in the lengthwise direction of the bank (the same applies to Patent Literature 1 cited above). However, conventionally, all dimension changing members are arranged at the same height, which is disadvantageous in firmly fixing the transparent plate so that it does not tilt.
However, by arranging the dimension changing members so as to press a plurality of locations spaced apart in the height direction as described above, the transparent plate can be firmly fixed so as not to tilt, and the seawall resists water pressure. strength increases. If multiple locations with different heights are to be pressed, a thickness adjustment plate can be appropriately inserted between the back surface of the transparent plate (the surface opposite to the side pressed by the dimension changing member) and the metal frame. It is also possible to adjust the verticality of the transparent plate.

In addition, in the above seawall,
・ A liner plate is sandwiched between the dimension change member and each transparent plate,
・ The liner plate has a length that is pressed by the plurality of dimension changing members arranged at intervals in the lengthwise direction of the embankment, and each portion pressed by each dimension changing member is independently It is even more preferable to have cuts that allow displacement in the thickness direction.
Such a configuration is also adopted for the liner plates illustrated in FIGS.

When a liner plate made of metal or the like is sandwiched between the dimension changing member and the transparent plate as described above, it is possible to avoid the pressing force of the dimension changing member acting on a limited narrow range on the transparent plate. This is advantageous in preventing cracks and breakage of the transparent plate. However, if the thickness of the transparent plate is not uniform or the surface has unevenness, if a liner plate made of a metal or the like is used, the pressing force of each dimension changing member will surely act on the transparent plate. Not necessarily. In fact, acrylic plates, which are often used as transparent plates, have a considerable variation in thickness. Yes, and the tolerance increases as the thickness increases.
In this regard, if a liner plate having cuts is used as described above, each portion of the liner plate pressed by each dimension changing member is displaced independently in the thickness direction, resulting in non-uniform thickness of the transparent plate. The pressing force of each dimension changing member reliably acts on the transparent plate even if there is an irregularity on the surface. Therefore, it becomes possible to fix the transparent plate strongly and stably.

In the above seawall,
- More preferably, the dimension-changing member is a combination of a male threaded member and a female threaded member, and is attached to the liner plate at the plurality of locations spaced apart along the length of the bank.
FIG. 3 shows an example in which the dimension changing member is attached to the liner plate. The example in FIG. 8 has the same configuration.

The length of the dimension changing member, in which the male thread member and the female thread member are coupled, changes when relative rotation is applied between the thread members, so that the lower edge of the transparent plate is pressed inside the metal frame. can be used as a means to When a plurality of such size changing members are attached to the liner plate at suitable locations spaced along the length (and height) of the ridge, such as by welding one member, The operation of pressing the lower edge of the transparent plate using the liner plate and the plurality of dimension changing members is simplified. This is because inserting the liner plate together with the lower edge of the transparent plate inside the metal frame alone will also place the dimension changing member at an appropriate location inside the metal frame.

In the seawall, further,
・ It is also extremely preferable that a plurality of transparent plates are arranged side by side so as to be continuous in the lengthwise direction of the embankment, and a caulking material having adhesiveness and deep curing property is filled between two adjacent transparent plates. .
4 and 8 show examples in which such a caulking material is filled between adjacent transparent plates.

By filling the space between two adjacent transparent plates with a caulking material having adhesiveness and deep-curing property as described above, water stoppage can be ensured even if there is some gap between the two transparent plates. This is because the caulking material strongly adheres to two adjacent transparent plates, and the portion filled in the gap between the transparent plates hardens even in a deep portion away from the surface and exhibits sufficient strength. Based on this, it is possible to construct the seawall so that there is no problem even if there is a gap of several mm to several tens of mm (up to about 50 mm) between the adjacent transparent plates. In that case, since the degree of freedom regarding the installation of the transparent plate increases, there is also the advantage that the construction work of the seawall can be greatly simplified.

With respect to the transparent plate in the above sea wall,
・ A plurality of transparent plates are arranged side by side so as to be connected in the lengthwise direction of the embankment, and an integrated connecting cap is attached to cover at least the upper ends of the two adjacent transparent plates near the opposing end faces. It is also preferable to have
FIGS. 8 and 9 show an example in which two adjacent transparent plates are covered with such an integrated connecting cap and attached.

When the upper ends of two adjacent transparent plates are covered with an integrated connecting cap so as to straddle both, there is a slight angular difference between the two transparent plates (one is tilted in the thickness direction with respect to the other). When there is a misalignment, it is possible to eliminate the angle difference by correcting the deviation of the upper end of the transparent plate by restraining it with the connecting cap. Also, the appearance of the joints between the transparent plates can be improved. When filling the space between two adjacent transparent plates with a caulking material as described above, it is advisable to cover the gap with the connecting cap before applying the caulking material or before the caulking material hardens to correct the misalignment. good.

In particular, when the connecting cap is attached,
・ The above connecting cap is a stack of metal plates inside and outside, the outer metal plate is a single continuous plate, and the inner metal plate is one of the two adjacent transparent plates. (displacement accompanying elastic deformation) and the displacement of the part covering the other transparent plate (displacement accompanying elastic deformation) do not affect each other. is more preferable.
FIG. 10 shows an example of such a connecting cap.

A transparent plate having a thickness of several tens of millimeters tends to have a thickness variation of several millimeters due to manufacturing circumstances (the JIS thickness tolerance for acrylic plates has been described above). When there is such a difference in thickness between two adjacent transparent plates, a simple interlocking cap made of only one metal plate can be applied and the cap will be strongly bonded to the thicker transparent plate. On the other hand, there is a possibility that the coupling displaces the entire cap, creating a gap, and loosening the coupling with the transparent plate on the thin side. In that respect, as described above, when the connecting cap is a stack of metal plates inside and outside, and the inner metal plate has a discontinuous portion between them, the two adjacent transparent plates are always can be tightly bound. Moreover, since the outer metal plate is a single continuous plate, there is no disadvantage in terms of appearance.

The metal frame according to the invention is
- A metal frame having a substantially U-shaped cross-sectional shape, in order to constitute the above-mentioned seawall, a plurality of metal frames are arranged side by side so that the inner space that opens upward is continuous in the longitudinal direction, It is characterized by being fixed to the upper part of the embankment by anchor bolts.
FIGS. 1 and 2 illustrate such a metal frame.

When a plurality of metal frames having a substantially U-shaped cross section are arranged side by side and fixed to the upper part of the embankment as described above, the lower edge of the transparent plate and the dimension changing member are placed inside as described above. By inserting and the like, it is possible to easily and appropriately construct a seawall in which a plurality of quadrilateral transparent plates are arranged on the upper part of the embankment.

The precast concrete blocks according to the invention are
- A metal frame having a substantially U-shaped cross-sectional shape is embedded in the upper part while having an upwardly open space inside. It is characterized by arranging a plurality of pieces side by side so that the space is continuous in the length direction.
An example of such a concrete block is shown in FIG.

These precast concrete blocks, in which a metal frame having a substantially U-shaped cross section is embedded in the upper part, are placed in a row on the seashore or river bank, etc., as described above, to form a bank. By inserting the lower edge of the transparent plate and the dimension changing member inside the metal frame, a plurality of quadrilateral transparent plates arranged on the upper part of the bank (see Fig. 8) can be easily constructed. Can be properly configured.

A method for constructing a seawall according to the invention is a method for constructing a seawall having a plurality of transparent plates as described above,
1) An upwardly open space is created by fixing a metal frame with a substantially U-shaped cross section to the top of the bank with anchor bolts or by embedding it in the precast concrete blocks that make up the bank. fixed in a state of having it inside,
2) inserting the lower edge of each of the transparent plates inside the metal frame;
3) A liner plate having cuts between each portion so that a plurality of portions along the length direction can be independently displaced in the thickness direction is attached to the metal plate so as to be in contact with the lower edge of the transparent plate. Insert inside the frame,
4) After inserting a plurality of dimension changing members for pressing the lower edge of the transparent plate in the thickness direction through the liner plate in the metal frame inside the metal frame, the slits in the liner plate are inserted. The lower edge of the transparent plate is fixed to the metal frame by pressing a plurality of portions sandwiching the transparent plate and a plurality of locations spaced apart in the height direction by the pressing member.
According to the construction method of the seawall in this way, it is possible to appropriately construct the aforementioned seawall in which a plurality of transparent plates are arranged on the upper part of the embankment.

For information on how to configure the above,
・ After fixing the lower edge of the transparent plate to the metal frame and arranging a plurality of transparent plates so as to line up in the length direction of the bank, the upper ends of at least the two adjacent transparent plates near the opposing end faces It is particularly preferable to cover and attach an integral cap to the transparent plate, and to fill a space between two adjacent transparent plates with a caulking material having adhesiveness and deep curing property.
In this way, the gap between the upper ends of the two adjacent transparent plates can be corrected to eliminate the angle difference between the two, and even if there is some gap between the two, the caulking material can ensure water stoppage. be able to.

According to the tide wall or the construction method thereof of the invention, the work of installing the metal frame for fixing the transparent plate on the upper part of the embankment is simplified, and the accuracy of the position and angle of the metal frame can be easily ensured. , the construction period of the seawall can be shortened. Furthermore, it is preferable to connect two adjacent transparent plates so that the transparent plates can be firmly fixed and can be appropriately handled even when the thickness of the transparent plates is not uniform or when the surface of the transparent plates has unevenness. It is also possible to construct an advantageous sea wall, such that it can be placed in a state.

1(a) is a front view of a seawall 1, and FIG. 1(b) is a sectional view taken along the line bb in FIG. 1(a). FIG. 2 is a plan view of the seawall 1, taken along line II-II in FIG. 1(a). 3(a) is a side view, 3(b) is a plan view, and 3(c) is a diagram showing a liner plate 32 (to which a dimension changing member 33 is attached) used in the seawall 1. is a front view, and (d) is a bottom view. 4(a) to 4(c) show the procedure for filling and adhering the caulking material 42 between two adjacent transparent plates 10 in the seawall 1. As shown in FIG. Fig. 5(a) is a front view of a sea wall 51, and Fig. 5(b) is a cross-sectional view taken along the line bb in Fig. 5(a). Fig. 3 is a cross-sectional view showing a precast concrete block 53 used for the seawall 51, showing a state in which the lower part is buried in the ground. 4 is a cross-sectional view showing a state in which a lower edge portion 60a of a transparent plate 60 is inserted and fixed in a metal frame 70 of the precast concrete block 53. FIG. It is also a detailed view of part of FIG. 5(b). FIG. 5B is a cross-sectional view taken along line VIII-VIII in FIG. 5B, showing the transparent plate 60, the liner plate 82, the dimension changing member 83, and the like. FIG. 9 is a view taken along line IX-IX in FIG. 8 and is a plan view of the upper part of the sea wall 51. FIG. 10A is a front view, and FIG. 10B is a bb cross section of FIG. 10A. FIG. FIG. (c) is a cc sectional view of (a). FIG. 10 is a cross-sectional view showing a structure for attaching a transparent plate 10' to a conventional seawall (described in Patent Document 1).

1 to 4 show a first embodiment of the invention.
In this example, as shown in FIG. 1(a), a plurality of transparent plates 1 are attached to the upper part of an existing concrete embankment 2 so as to be continuous in the longitudinal direction. In this example, an acrylic plate having a height of about 1 m, a length of about 2 m, and a thickness of 30 mm is used as each transparent plate 10 . The transparent plate 1 is attached using a metal frame 20 shown in FIG. 1(b). The details are as follows.

The metal frame 20 is formed by integrating a portion having a substantially U-shaped cross section and a base plate for installation on the top of the bank 2 . A portion having a U-shaped cross section is formed by welding L-shaped steel members 21 and 22, and further, by welding another L-shaped steel member 23 to the outside, the portion of the base plate 25 is formed on the left and right. forming. Reinforcing ribs 26 are welded between the base plate 25 and the steel members 21, 22, 23 forming a U-shaped cross section. Considering the usage environment, the metal frame 20 is made of rust-resistant stainless steel or a plated steel plate with excellent corrosion resistance.

The metal frame body 20 formed as described above has anchor bolts 3 embedded in the upper part of the concrete embankment 2 passed through the bolt insertion holes formed at a plurality of locations of the base plate 25, and double nuts are used. fixed. A thickness adjusting plate 4 is sandwiched between the upper portion of the bank 2 and the base plate 25. - 特許庁

Since the metal frame 20 fixed to the upper part of the bank 2 has a substantially U-shaped groove-shaped space that opens upward, the lower edge 10a of the transparent plate 10 is inserted into the space and fixed. When inserting, first, a rubber block 31 on which the lower end of the transparent plate 10 is placed is placed at the bottom of the groove, and then the liner plate 32 is inserted together with the lower edge 10a of the transparent plate 10. As shown in FIG. The liner plate 32 is a plate made of metal, and has a plurality of dimensional change members 33 attached by welding, each having a male thread and a female thread coupled to each other. The dimension changing members 33 are inserted inside the metal frame 20 so that the dimension changing members 33 are positioned on the sea or river side (left side in FIG. 1(b)) with respect to the transparent plate 10, and then each dimension changing member 33 is By operating the screw to extend the member 33 , the transparent plate 10 can be pressed through the liner plate 32 and restrained inside the metal frame 20 . After that, when the gap above the liner plate 32 is closed with the packing 34, the attachment of the transparent plate 10 to the metal frame 20 is completed.

A plurality of dimension changing members 33 are attached to the liner plate 32 in the longitudinal direction of the bank 2 as shown in FIG. As shown in FIGS. 3(a) and 3(c), the dimension changing member 33 is also mounted on the liner plate 32 at two positions spaced apart in the height direction.
As shown in FIGS. 3A and 3B, the liner plate 32 has a flat portion 32a sandwiched between the transparent plate 10 and the dimension changing member 33, and an upper curved portion 32b and a lower curved portion 32c. , and the dimension changing member 33 is attached to the plate-like portion 32a. The reason why the bent portions 32b and 32c are provided is to stabilize the position within the metal frame 20 and to make it easier to attach the packing 34 to the upper portion. The upper bent portion 32b is formed discontinuously as shown in FIG. 3(b) so that the dimension changing member 33 can be operated.

As shown in FIG. 3C, the liner plate 32 is provided with cuts 32d between adjacent dimension changing members 33. As shown in FIG. The cut 32d has a length that spans the entire width of the flat plate portion 32a of the liner plate 32, but does not cut the liner plate 32 because it does not reach the lower bent portion 32c. Due to the presence of such cuts 32d, when the dimension changing members 33 are extended, each part of the liner plate 32 can be pressed by the respective dimension changing members 33 and flexibly bent. Therefore, even if the acrylic plate, which is the transparent plate 10 , has variations in thickness or unevenness on the surface, the pressing force of each dimension changing member 33 can be reliably applied to the entire area of the transparent plate 10 by each part of the liner plate 32 . can act on

Since the metal frames 20 are arranged side by side in the length direction of the bank 2, the transparent plates 10 are also connected in the length direction with some gaps (intervals of about 20 mm) between adjacent transparent plates 10. Become. A caulking material 42 is filled between the end faces of two adjacent transparent plates 10 as shown in FIG. 1(a). As the caulking material 42, a sealing material having adhesiveness to the acrylic plate and deep-curing property, for example, Shin-Etsu Chemical Co., Ltd.'s 3-component system (including main agent, curing agent, and color GX) silicone sealing material "Marine Sealant GX" is used.

FIG. 4 shows how the caulking material 42 is filled between two adjacent transparent plates 10 . That is, the sponge material 41 shown in FIG. 4(a) is inserted or adhered to the bottom of the end surface 10b of the transparent plate 10 attached using the metal frame 20 as shown in FIG. A caulking material 42 is filled between the plates 10 as shown in FIG. 4(c).

5 to 10 show a second embodiment of the invention.
In this example, first, a plurality of precast concrete blocks 53 shown in FIG. 6 are manufactured in a factory that precasts concrete, and they are arranged side by side on the seashore or river bank. Then, as shown in FIGS. 5(a) and 5(b), a transparent plate 60 (almost the same size as that used in the examples of FIGS. 1 to 4) is placed on the concrete embankment 52 formed by the blocks 53. The sea wall 51 is constructed by arranging and attaching the acrylic plates of the above.

The precast concrete block 53 has an L-shaped cross section as shown in the drawing, and the length of one block (lengthwise dimension of the embankment 52) is about 2 m. The side of the L-shaped upward part is directed toward the sea or river, and the bottom part and the like are buried in the ground to form a bank 52. - 特許庁
As shown in FIG. 6, a metal frame 70 having a generally U-shaped cross section is embedded at the top of the upwardly directed portion. A U-shaped grooved steel material may be used as the metal frame 70, but in this example, a pair of steel materials 71 and 72 having an L-shaped cross section are used by welding. Since the blocks 53 are manufactured in the factory, the positional accuracy of the metal frames 70 can be increased. Therefore, when the blocks 53 are arranged side by side as shown in FIG. The inner space is continuous in the length direction. Also in this example, stainless steel, corrosion-resistant plated steel plate, or the like is used as the metal material of the metal frame 70 and the like.

Also in this example, the transparent plate 60 is attached by inserting its lower edge 60a inside the metal frame 70 as shown in FIG. Specifically, the rubber block 81 is first placed in the space inside the metal frame 70 embedded in the block 53 as described above, and then the liner plate 82 is inserted together with the lower edge 60a of the transparent plate 60 . The liner plate 82 is welded with a plurality of dimension changing members 83 each having a male thread and a female thread. After inserting them, the screw of each dimension changing member 83 is operated to enlarge its dimension, so that the lower edge 60a of the transparent plate 60 can be pressed in the thickness direction through the liner plate 82, and the metal The transparent plate 60 can be restrained and fixed inside the frame 70 . After that, the gap between the metal frame 70 and the transparent plate 60 is sealed by covering the upper part of the liner plate 82 with the packing 84 .

8 and 9 show a state in which the transparent plate 60 is attached to the metal frame 70 of the precast concrete block 53 as described above.
The liner plate 82 used in this example is similar to the liner plate 32 (see FIG. 3) used in the previous examples. That is, as shown in FIG. 8, a plurality of dimension changing members 83 are attached to the liner plate 82 at intervals in the length direction and at two upper and lower positions at intervals in the height direction. In addition, vertically extending cuts 82d are provided between adjacent dimension changing members 83 so that each portion pressed by each dimension changing member 83 can be independently displaced in the thickness direction. ing.
As shown in FIGS. 8 and 9, the liner plate 82 is formed with an upper bent portion 82b and a lower bent portion 82c in addition to the flat plate portion 82a to which the dimension changing member 83 is attached. are also the same as the liner plate 32 in the previous embodiment.

After attaching the transparent plates 60 to the upper portions of the precast concrete blocks 53 arranged side by side, as shown in FIG. do. Also in this example, as the caulking material 42, a sealing material (for example, the aforementioned silicone sealing material "Marine Sealant GX") having adhesiveness to the acrylic plate and deep-part curability is used. A sponge material 91 is attached to the area of the metal frame 70 into which the lower edge 60a of the transparent plate 60 is inserted (similar to the use of the sponge material 41 in the example of FIG. 4).

Furthermore, in the vicinity of each end surface of two adjacent transparent plates 60, as shown in FIG. The connection cap 93 is made of metal and has an inverted U-shaped cross section. can be corrected. There is also the advantage of improving the appearance of the joint portion of the transparent plate 60 .

The connecting cap 93 described above is constructed as shown in FIG. That is, the outer metal plate 93a and the inner metal plate 93b are stacked inside and out, and a silicone rubber sponge 93d is attached to the inner side surfaces of the inner metal plate 93b facing each other. The outer metal plate 93a is a single continuous plate, while the inner metal plate 93b has vertically extending slits 93c at two locations on opposite sides thereof, as shown in FIG. 10(c). be. Due to the presence of the slits 93c, the deformation of the portion of the inner metal plate 93b covering one of the two transparent plates 60 is not affected by the deformation of the portion covering the other transparent plate 60. Therefore, the connection cap 93 can be firmly and appropriately mounted even when the transparent plates 60 have different thicknesses.
It should be noted that such a connection cap can be used for the connecting portion of the transparent plate 10 in the tide barrier 1 of the previous embodiment (FIGS. 1 to 4) as well.

1・51 Seawall 2・52 Embankment 3 Anchor bolt 53 Precast concrete block 10・60 Transparent plate 10a・60a Lower edge 20・70 Metal frame 32・82 Liner plate 32d・82d Cut 33・83 Dimension change member 42・92 caulking material 93 connection cap 93c slit (discontinuous portion)

Claims (11)

A sea wall in which a plurality of quadrilateral transparent plates are arranged on the upper part of the embankment,
A metal frame having a substantially U-shaped cross-sectional shape is fixed to the upper part of the bank in a state of having an upwardly open space inside, and the lower edge of each transparent plate and the thickness direction of each transparent plate a dimension changing member capable of changing a dimension is inserted inside the metal frame, and each of the transparent plates is fixed to the metal frame by pressing a lower edge portion thereof with the dimension changing member;
and a seawall, wherein the metal frame is installed on top of the embankment by being fixed with anchor bolts or embedded in precast concrete blocks constituting the embankment. The dimension changing member presses against the lower edge of each transparent plate at a plurality of locations spaced apart in the length direction of the bank and also spaced in the height direction. 2. A sea wall according to claim 1, wherein a plurality of seawalls are arranged in the frame. A liner plate is sandwiched between the dimension changing member and each of the transparent plates,
The liner plate has a length that is pressed by the plurality of dimension changing members arranged at intervals in the lengthwise direction of the bank, and each portion pressed by each dimension changing member has an independent thickness. The seawall according to claim 1 or 2, characterized in that it has cuts that allow it to be displaced in the vertical direction. The dimension changing member is a combination of a male threaded member and a female threaded member, and is attached to the liner plate at the plurality of locations spaced apart in the longitudinal direction of the bank. Item 3. A sea wall according to Item 3. The plurality of transparent plates are arranged side by side so as to be continuous in the length direction of the embankment, and a caulking material having adhesiveness and deep curing property is filled between two adjacent transparent plates. A seawall according to any one of claims 1 to 4. The plurality of transparent plates are arranged side by side so as to be connected in the lengthwise direction of the bank, and an integrated connecting cap is attached to cover at least the upper end portions of the two adjacent transparent plates near the opposing end faces. The sea wall according to any one of claims 1 to 5, characterized in that The connecting cap is formed by stacking metal plates inside and outside, the outer metal plate is a single continuous plate, and the inner metal plate covers one of the two adjacent transparent plates. 7. A seawall according to claim 6, characterized in that it has a discontinuous portion between the two portions that prevents the displacement of the portion and the displacement of the portion overlying the other transparent plate from affecting each other. A metal frame having a substantially U-shaped cross-sectional shape, wherein an inner space open upward continues in the longitudinal direction to constitute the seawall according to any one of claims 1 to 7. A metal frame, characterized in that a plurality of such metal frames are arranged side by side and fixed to the upper part of the embankment by anchor bolts. A metal frame having a substantially U-shaped cross-sectional shape is embedded in the upper part in a state of having an upwardly open space inside, and constitutes the seawall according to any one of claims 1 to 7. (2) a precast concrete block for a tide barrier, wherein a plurality of precast concrete blocks are arranged side by side so that the space of the metal frame is continuous in the longitudinal direction; A method for constructing a seawall in which a plurality of quadrilateral transparent plates are arranged above a bank,
A metal frame having a substantially U-shaped cross section is fixed to the top of the embankment with anchor bolts, or embedded in the precast concrete blocks that make up the embankment. fixed in the state of having
inserting the lower edge of each of the transparent plates inside the metal frame;
A liner plate having cuts between each portion so that a plurality of portions along the length direction can be independently displaced in the thickness direction is attached to the metal frame so as to be in contact with the lower edge of the transparent plate. inside the
A plurality of dimension changing members for pressing the lower edge of the transparent plate in the thickness direction through the liner plate in the metal frame are inserted into the metal frame, and the cuts in the liner plate are cut. A structure of a seawall, characterized in that the lower edge of the transparent plate is fixed to the metal frame by pressing a plurality of sandwiched portions and a plurality of locations spaced apart in the height direction with the pressing member. Method. After a plurality of the transparent plates are arranged so as to line up in the lengthwise direction of the embankment with the lower edges fixed to the metal frame, the upper end portions of at least the two adjacent transparent plates near the opposing end surfaces. 11. A method of constructing a seawall according to claim 10, characterized in that the seawall is attached by covering it with an integral cap, and a caulking material having adhesiveness and deep curing property is filled between two adjacent transparent plates.

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