JP2003074038A - Repair revetment structure and repairing method for deteriorated sheet pile revetment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a revetment structure and its repairing method capable of mending and repairing a revetment structure with cross sectional performance deteriorated by corrosion or the like in limited space. SOLUTION: A linear sheet pile wall 23 is newly constructed adhered to protruding parts 16 of an existing sheet pile wall 3 with the cross sectional performance deteriorated by corrosion or the like or slightly separated from the protruding parts 16. The linear sheet pile wall 23 is composed by loosely engaging joints 17 in a wide panel like steel sheet piling 22 composed of a flat plate 21 having the joints 17 in both ends, and protrusion parts 19 comprising either one of wide flange shape steel, CT steel, or a steel flat reinforcing flexural rigidity, providing self-standing, joined to a face of the flat plate 21 in an existing sheet pile wall side, and provided so as to match recessed parts 18 of the existing sheet pile wall 3.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to aged sheet pile structure, and in particular to reinforcement and restoration of aged sheet pile revetment, which does not adversely affect adjacent structures or secures a flow rate in a river or a water area of a harbor. The present invention relates to a reinforcing structure, a repairing structure, and a repairing method that meet the needs of constructing a reinforcing structure in a limited space for securing.

[0002]

2. Description of the Related Art There are examples of revetment structures made by driving steel sheet piles in harbors, rivers, etc. nationwide, but now that decades have passed since the construction of this sheet pile revetment, the cross-sectional performance has deteriorated due to corrosion of steel sheet piles. And the repair and reinforcement measures are a problem.

As a first conventional example of a measure for reinforcing a corroded steel sheet pile, a new seawall (steel sheet pile) is provided on the front of an existing seawall.
There is a construction method to construct.

Conventional example 1 will be described below with reference to FIGS. First, Fig. 12 shows the existing dilapidated sheet pile revetment 1
The left side of the figure is the port outside and the right side is the port inside. In this sheet pile revetment 1, a predetermined interval is set in the water 2, and U
It is constructed by driving the steel sheet pile wall 3 which is connected through the joints of the shaped steel sheet piles 6 to the water bottom ground 7, and on the back surface of both steel sheet pile walls 3 is an uprising made of long channel steel. The ridges 4 are provided horizontally, and both the uprisings 4 are connected by tie rods 5. Further, the space-filling sand 8 is filled between the steel sheet pile walls 3, and a superstructure 10 made of concrete is applied to the upper part of the space-filling sand 8 to form the superstructure 1.
The heads of both steel sheet pile walls 3 are covered with 0.

In the existing sheet pile revetment 1, when the existing U-shaped steel sheet pile 6 deteriorates in cross-sectional performance due to corrosion, in Conventional Example 1, as shown in FIG. A new sheet pile wall 3a having the same sectional structure is constructed. That is, the existing sheet pile revetment 1 is configured such that the joints 11 are fitted and connected to each other, and the adjacent sheet piles alternately face each other, and the concavo-convex portion is continuously formed. On the front surface of the existing sheet pile wall 3, the new sheet pile wall 3 having the same structure as the existing sheet pile wall 3 so that the unevenness is located at the same position.
a is cast in parallel, and the narrow web portions 12 between the old and new sheet pile walls 3 and 3a are joined by the joining metal fittings 14, and the water-proof filler is provided in the space between the old and new sheet pile walls 3 and 3a. It is a reinforcing method for filling 15.

As a conventional example 2 in which a plurality of sheet pile walls are constructed in parallel, a "combined steel sheet pile construction method" (JP-A-54-78813) in which a U-shaped steel sheet pile and an H-shaped steel are combined, and a similar conventional method As Example 3, "steel member for underground continuous wall" in which CT section steel (section steel having H section steel divided into web sections to form T section) is directly welded to a steel sheet pile (JP-A-6-280251).
Issue bulletin). Further, as Conventional Example 4, "a steel underground wall also serving as a main body" using a straight sheet pile (Japanese Patent Laid-Open No. 3-1
7313).

[0007]

However, in the above-mentioned conventional example 1, although the purpose of repairing the existing sheet pile wall 3 having a reduced cross-sectional performance can be achieved, the new sheet pile wall 3a is similar to the existing sheet pile wall 3. Since it has a concavo-convex structure, it is joined to the existing sheet pile wall 3 by the joining metal fitting 14, and the space between the old and new sheet pile walls 3, 3a is filled with the water blocking filler 15. It will largely project in front of the wall 3, and the space in front of the existing sheet pile wall 3 will be sacrificed. Therefore, in rivers, there is a problem that the width of the river will be narrowed to increase the risk of flooding, and in the port, there will be problems such as narrowing the port water area and coming to the berth of the ship. However, it is not preferable as a method for reinforcing and repairing aged sheet pile structure, especially for aged sheet pile revetment.

Further, Conventional Example 2 and Conventional Example 3 are intended to construct a new sheet pile wall by themselves, and are not suitable for repairing an existing revetment (existing sheet pile wall 3) but also existing sheet pile walls. It cannot be installed close to the wall.

In Conventional Example 4, CT section steel is joined to a straight sheet pile, but it is not intended for repairing an existing revetment (existing sheet pile wall 3) and cannot be closely attached to the existing sheet pile wall. In addition, since a wide steel plate or the like is not used and a large number of narrow members are placed, there is a problem in manufacturing cost and construction cost.

As a method of repairing the existing steel sheet pile wall 3, there is a repairing method of repairing each part corroded by FRP (fiber reinforced plastic). This method requires underwater work, and the FRP is It does not function as a "soil retaining structure", and it is said that there is a limit to its durability, so it is not practical as a measure to repair an aged sheet pile structure.

The present invention is directed to a sheet pile revetment structure in which the cross-sectional performance is deteriorated due to corrosion or the like caused by a long time after construction.
By constructing a new structural member using the concave space of the sheet pile wall, the projecting part is suppressed to a minimum in a limited space, and the revetment in use is economically reinforced in a short period of time. It is intended to provide a construction method for recovering strength and restoring it.

[0012]

In order to solve the above-mentioned problems, the present invention is constructed as follows.

A first aspect of the present invention is a repaired revetment structure for an aged sheet pile revetment, which comprises steel sheet pile walls having concavo-convex portions alternately contiguous with each other, and is in contact with the convex portion of the existing steel sheet pile wall or from the convex portion. A linear steel sheet pile wall is constructed with a slight distance, the linear steel sheet pile wall has joints at both ends, and the central flat plate portion is a wide panel steel sheet pile, and CT that enhances bending rigidity at a position facing the recess of the existing steel sheet pile wall
A wide panel-shaped steel sheet pile to which projections made of shaped steel, H-section steel, flat steel, etc. are joined, and the joint is fitted so that the projections freely fit into the recesses of the existing steel sheet pile wall. It is characterized in that it is constructed by being installed.

In a second aspect based on the first aspect, the wide panel-shaped steel sheet pile forming the linear steel sheet pile wall faces a plurality of recesses of the existing steel sheet pile wall, and It is characterized in that a plurality of the projections are joined so that the projections for enhancing the bending rigidity are loosely fitted in at least two recesses of the recesses.

A third aspect of the present invention is a repaired revetment structure of an aged sheet pile revetment composed of steel sheet pile walls in which uneven portions are alternately continuous, and is in contact with the convex portion of the existing steel sheet pile wall or from the convex portion. A linear steel sheet pile wall is constructed with a slight distance, the linear steel sheet pile wall has joints at both ends, and the central flat plate portion is a wide panel steel sheet pile, and The present invention is characterized in that a wide panel-shaped steel sheet pile, in which a projecting member such as a bell is joined to a surface of an existing steel sheet pile wall side, is constructed by driving so as to fit the joint.

In a fourth invention according to any one of the first to third inventions, a projecting member such as a dowel is joined to a surface of the existing steel sheet pile wall on the side of the new linear steel sheet pile wall. It is characterized by

According to a fifth aspect of the present invention, in any one of the first to fourth aspects of the invention, the joint portion of the steel sheet pile having a wide panel shape is a member obtained by dividing a straight sheet pile into halves and joined to both ends of the flat plate portion. It is characterized by being

In a sixth aspect of the present invention according to any one of the first to fifth aspects, the gap between the existing steel sheet pile wall and the new linear steel sheet pile wall is filled with sand, gravel, cohesive soil, and aged material. It is characterized in that various fillers such as curable materials are filled individually or in a mixture.

A seventh aspect of the present invention is a restoration construction method for an aged seawall revetment comprising steel sheet pile walls in which uneven portions are alternately continuous, and has a joint at both ends and a flat plate portion in the center is a wide sheet steel sheet pile. And a wide panel-shaped steel sheet pile in which a protruding portion made of CT-section steel, H-section steel, flat steel or the like for strengthening bending rigidity is joined to a position of the flat plate portion facing the concave portion of the existing steel sheet pile wall. Is brought into contact with the convex portion of the existing steel sheet pile wall, or a little away from the convex portion, so that the projection portion loosely fits into the concave portion of the existing steel sheet pile wall, and while fitting the joint. It is characterized by constructing a linear steel sheet pile wall by sequentially driving.

In an eighth aspect based on the seventh aspect, a projection made of CT section steel, H section steel or flat steel or the like for strengthening bending rigidity is provided at a position of the flat plate portion facing the recess of the existing steel sheet pile wall. A wide panel-shaped steel sheet pile in which a projecting member such as a bell is joined to the existing steel sheet pile wall side surface of the flat plate portion is used instead of the wide panel-shaped steel sheet pile in which the portions are joined.

In a ninth aspect based on the seventh or eighth aspect, before the straight steel sheet pile wall is constructed, a surface of the existing steel sheet pile wall on the side of the new straight steel sheet pile wall is previously prepared. It is characterized in that a protruding member such as a dowel is attached to the.

In a tenth aspect of the present invention according to any one of the seventh to ninth aspects, sand, gravel, cohesive soil, and aging are set in the gap between the existing steel sheet pile wall and the new linear steel sheet pile wall. It is characterized in that various fillers such as a conductive material are filled individually or in a mixture.

[0023]

According to the present invention, a straight steel sheet pile wall is used as a new structural member in order to restore the strength as an earth retaining structure in a seawall structure in which the cross-sectional performance is deteriorated due to corrosion of the sheet pile wall or the like. It is placed in close contact with or close to the existing sheet pile wall, and furthermore, by utilizing the uneven space of the sheet pile of the existing seawall, the protrusion for strengthening the bending rigidity of the linear steel sheet pile wall is provided in the space of the concave portion. It is built by using it and filling the space between the old and new steel sheet pile walls with a filler.

Therefore, according to the present invention, a space-saving reinforcing structure (a new steel sheet pile wall for reinforcement) can be constructed in the limited space of the existing sheet pile wall, and the river width and the harbor water area are sacrificed. It is possible to reinforce and repair a revetment that is not in use and is in use in a short period of time. Further, by constructing a reinforcing sheet pile wall member having a width exceeding 800 mm (for two steel sheet piles) using a wide steel sheet, manufacturing cost and driving cost can be reduced.

Further, a projecting member such as a dowel provided on the side surface of the existing steel sheet pile wall of the linear steel sheet pile wall is located in the concave portion of the existing sheet pile wall, and the linear steel sheet pile wall is constructed by utilizing the concave portion space. The space between the new and old steel sheet pile walls to secure the connection with the time-curable material that fills the space between the old and new steel sheet pile walls. It is possible to construct a new steel sheet pile wall) and to reinforce and restore the revetment in use in a short period of time without sacrificing river width or harbor water area.

The projections made of CT section steel, H section steel, flat steel or the like for enhancing the bending rigidity are not limited to these exemplified section steels, and various forms are allowed as long as the required characteristics can be obtained. It is a thing.

As a joining means for joining a projecting member such as a CT section steel, an H section steel or a flat steel, etc., or a projecting member such as a dowel for strengthening bending rigidity to a steel sheet pile, a machine such as a screw fastening by a bolt or a caulking joint is used. In addition to dynamic joining, various means such as welding, pressure welding, and adhesion are allowed depending on the required characteristics.

The filler to be filled in the gap between the existing steel sheet pile wall and the new linear steel sheet pile wall is selected from various fillers such as sand, gravel, cohesive soil, and time-hardening material. They may be filled individually or as a mixture depending on the required characteristics. Further, examples of the time-curable material include cement, mortar, concrete, soil cement, and resin.

[0029]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described with reference to the drawings.

1 to 4 show Embodiment 1 of the present invention. FIG. 1 is a sectional view of a seawall structure in which the repair wall of Embodiment 1 is applied to an existing sheet pile seawall, and FIG. 2 is A- in FIG. A sectional view, FIGS. 3A and 3B are sectional views taken along lines aa and bb in FIG. 2, and FIGS. 4A and 4B are sectional views taken along lines BB and CC in FIG. It is a figure. 5: is a figure of the 1st construction process of the seawall structure of Embodiment 1, FIG. 6 is a figure of the 2nd construction process, FIG. 7 is a figure of the 3rd construction process.

In FIG. 1, the existing aged sheet pile revetment 1 is the same structure as described in FIG. That is, FIG. 1 shows, as Embodiment 1, a sheet pile revetment 1 in a river revetment composed of U-shaped steel sheet pile walls. In the sheet pile revetment 1, the left side of the figure is the port outside and the right side is the port inside.

The sheet pile revetment 1 is constructed by striking a steel sheet pile wall 3 formed by connecting a U-shaped steel sheet pile 6 through a joint in water 2 at a predetermined interval and by striking the seabed 7 with a vibro hammer method. The steel sheet pile wall 3 is provided with a ridge 4 horizontally provided on the back surfaces of the steel sheet pile walls 3 and is formed by a long channel steel. It is composed of a double wall connected by a tie rod 5 penetrating through. further,
The space between the steel sheet pile walls 3 is filled with the filling sand 8 and a concrete superstructure 10 is installed on the top of the filling sand 8 and the head of the steel sheet pile wall 3 is constructed by the superstructure 10. The part is covered.

In the existing sheet pile revetment 1 described above, as a repaired revetment structure when the existing U-shaped steel sheet pile 6 deteriorates in cross-sectional performance due to corrosion, as shown in FIGS. The sheet pile wall 23 is constructed.

In each drawing, the linear steel sheet pile wall 23 is
It is constructed slightly away from the convex portion 16 of the existing steel sheet pile wall 3 to the front side. The linear steel sheet pile wall 23 is configured by connecting the wide sheet-shaped steel sheet piles 22. The wide panel-shaped steel sheet pile 22 welds a member (called a sheet pile half-divided member) 20 obtained by dividing a straight sheet pile into halves to both ends of a flat plate 21 made of a steel plate, and further strengthens the bending rigidity of the flat plate 21. The steel sheet pile 22 having a wide panel shape is provided with a protrusion 19 made of H-shaped steel in order to provide self-sustaining property. This protrusion 1
9 may be CT section steel or flat steel, which will be described in a later embodiment.

The wide sheet-shaped steel sheet pile 22 is driven so that the protrusion 19 of the H-shaped steel is located in the recess 18 of the existing steel sheet pile wall 3, and the adjacent steel sheet piles 22 are separated from each other. Linear steel sheet pile wall 2 joined by joint 17
3 are built.

In the first embodiment, the wide sheet-shaped steel sheet pile 2 is used.
The joints 17 at both ends of 2 are provided so as to be located in the recesses 18 on both sides of the existing steel sheet pile wall 3 with one recess 18 therebetween, and the protrusions 19 of the H-shaped steel are provided in the intermediate recesses. One is provided so as to be arranged at 18. Specifically, in the first embodiment, the wide sheet-shaped steel sheet pile 22 is a reinforcing wall member having a width dimension (W) of 1600 mm.

As shown in FIG. 2 and FIG. 3A, the steel sheet pile 22 having a wide panel shape has a steel sheet pile 22 on both sides of the flat sheet 21 on the side of the existing steel sheet pile wall, and the upper end portion and the existing steel sheet pile wall. Convex part 1 of 3
A spacer 24 is welded between the upper end of 6 and
The flat plate 21 is provided by the spacer 24 so as not to open from the existing steel sheet pile wall 3. Furthermore, FIG. 2 and FIG.
As shown in (B), a hook-shaped locking metal fitting 25 is welded to the upper end of the rear flange 19a of the H-shaped steel projection 19, and when a wide sheet-shaped steel sheet pile 22 is driven. The locking metal fitting 25 is provided so as to lock onto the upper end of the web portion 12 in the recess 18 of the existing steel sheet pile wall 3.

As described above, the wide sheet-shaped steel sheet pile 22 is laid while fitting the joint 17 to construct the linear steel sheet pile wall 23 as the reinforcing wall member. In the space between the existing steel sheet pile wall 3 and the time-hardening material 26 such as concrete or cement mortar.
Is filled.

A process of repairing an aged seawall revetment according to the present invention will be described.

First, as shown in FIG. 5, both sides of the superstructure 10 are hung and the removal portions 27 are formed to expose the head of the existing steel sheet pile wall 3. Next, as shown in FIG.
Wide-panel-shaped steel sheet piles 22 are sequentially cast to construct a linear steel sheet pile wall 23. Further, as shown in FIG. 7, a gap between the existing steel sheet pile wall 3 and the linear steel sheet pile wall 23 is filled with a time-hardening material 26 (or earth and sand) for filling. Finally, concrete is poured into the removal section 27, and the repair of the deteriorated sheet pile revetment is completed. (See Figure 1)

According to the first embodiment, since the new steel sheet pile wall 23, which is the reinforcing wall, is linear, there is almost no protrusion amount from the convex portion 16 of the existing steel sheet pile wall 3, and the spacer 24
The width of can be small. Therefore, the linear steel sheet pile wall 2
Since 3 can be provided as close as possible to the convex portion 16 of the existing steel sheet pile wall 3, by providing the new reinforcing wall, the river width is hardly affected in the river, that is, There is a merit that it can be repaired without narrowing the river width.

FIG. 8 shows the second embodiment and shows an example in which the existing steel sheet pile wall 3 cast on the riverbank 29 is repaired by the linear steel sheet pile wall 23 for reinforcement according to the second embodiment. ing.

The wide sheet-shaped steel sheet pile 22 of the second embodiment.
The flat plate portion and the joint 17 are integrally formed by hot rolling, cold working of a hot coil, or the like, and two H-shaped steels are formed on the surface of the flat plate portion on the existing steel sheet pile wall side at a predetermined interval. A protrusion 19 made of metal is provided. The two projections 19 of the H-section steel are located in the recesses 18 on both sides of the existing steel sheet pile wall 3 with the projections 16 therebetween. Also, joint 1
7 is a convex portion 1 located on both sides of two adjacent concave portions 18.
Located in front of 6.

Also in the second embodiment, the spacer 24 is welded between the steel sheet pile walls 3 and 23 so that the reinforcing straight steel sheet pile wall 23 and the existing steel sheet pile wall 3 do not open. The spacer 24 provided at the position of the joint 17
Has one side edge welded to the side surface of the claw portion of the joint 17, and the other side edge welded to the convex portion 16 of the existing steel sheet pile wall 3. Other configurations and operations are the same as those in the first embodiment.

FIG. 9 shows the third embodiment. In the third embodiment, the flat plate 21 of the steel sheet pile 22 having a wide panel shape is applied to the web portion 12 of the projection 16 of the existing steel sheet pile wall 3 to form the linear steel sheet pile wall 23 for reinforcement. An example is shown. Further, in order to prevent the wide-width panel-shaped steel sheet pile 22 from opening from the existing steel sheet pile wall 3, a hook-like locking metal fitting 30 is applied to the upper surface end of the flat plate 21 on the side of the existing steel sheet pile wall.
The hook portion 0 is the web portion 12 of the protrusion 16 of the existing steel sheet pile wall 3.
It is locked at the upper end of. Other configurations are the same as those of the first embodiment.

According to the third embodiment, since the reinforcing linear steel sheet pile wall 23 is constructed along the web portion 12 of the convex portion 16 of the existing steel sheet pile wall 3, the spacer 24 of the first embodiment is used. Since there is no width of the river, there is an advantage that it can be repaired without narrowing the river width.

FIG. 10 shows the fourth embodiment. In the fourth embodiment, the protrusion 1 for strengthening the bending rigidity is welded to the surface of the flat plate 21 of the wide sheet-shaped steel sheet pile 22 on the existing steel sheet pile wall side.
An example in which 9 is made of CT steel and the rear flange 19a is arranged in the recess 18 of the existing steel sheet pile wall 3 is shown. Other configurations and operations are the same as in the third embodiment.

FIG. 11 shows the fifth embodiment. In the fifth embodiment, an example is shown in which a plurality of dowels (projections) 28 made of round steel are joined to the surface of the flat plate 21 of the wide sheet-shaped steel sheet pile 22 on the existing steel sheet pile wall side by welding. The dowel 28 may also be welded to the inner surface of the recess 18 of the existing steel sheet pile wall 3, and the drawing shows an example thereof.

The dowel 28 according to the fifth embodiment is a steel sheet pile 2 having a wide panel shape and having the projections 19 according to the first to fourth embodiments.
Different from the flexural rigidity enhancing function of 2, the bond strength between the linear steel sheet pile wall 23 for reinforcement and the existing steel sheet pile wall 3 and the time-hardening material 26 such as concrete or cement mortar is filled. It has a function to do. Other configurations and operations are the same as those of the first to fourth embodiments.

[0050]

According to the present invention, a straight steel sheet pile wall is closely attached to an existing sheet pile wall as a new reinforcing structure in the reinforcement and restoration of an deteriorated sheet pile structure, particularly an aged sheet pile revetment. The units of the linear steel sheet pile wall are provided in close proximity to each other in order to strengthen the rigidity of the linear steel sheet pile wall, or to strengthen the bond with the time-curable material filling the gap between the old and new steel sheet pile walls. A wide panel-shaped steel sheet pile to be constructed is provided with a protrusion on the surface of the existing steel sheet pile wall side, and since this protrusion was installed using the concave space of the existing sheet pile wall, the space is limited. The construction of the newly constructed steel sheet pile wall can be done with the projection width to the front minimized, and the revetment in use can be economically reinforced in a short period of time to restore its strength and restore it, which does not adversely affect adjacent structures. Without affecting or securing river flow, harbor water For securing, it is possible to meet the needs for building a reinforcement structure within a limited space. Also, by constructing the reinforcing member using a wide steel plate (corresponding to two steel sheet piles) exceeding 800 mm, it is possible to reduce the manufacturing cost and the driving cost.

[Brief description of drawings]

FIG. 1 is a sectional view of a revetment structure in which an existing sheet pile revetment is constructed with a repair wall according to the first embodiment.

FIG. 2 is a sectional view taken along line AA of FIG.

3A and 3B are sectional views taken along the lines aa and bb in FIG.

4 (A) and (B) are BB, CC of FIG.
FIG.

FIG. 5 is a first construction process of the revetment structure of the first embodiment.

FIG. 6 is a second construction step of the revetment structure of the first embodiment.

FIG. 7 is a third construction process of the revetment structure of the first embodiment.

FIG. 8 is a cross-sectional view of a revetment structure in which the repair wall of the second embodiment is applied to an existing sheet pile revetment.

FIG. 9 is a cross-sectional view of a revetment structure in which the repair wall of the third embodiment is applied to an existing sheet pile revetment.

FIG. 10 is a cross-sectional view of a revetment structure in which the repair wall of the fourth embodiment is applied to an existing sheet pile revetment.

FIG. 11 is a sectional view of a revetment structure in which an existing sheet pile revetment is constructed with the repair wall of the fifth embodiment.

FIG. 12 is a cross-sectional view of an existing sheet pile revetment structure.

FIG. 13 is a cross-sectional view of a revetment structure in which a repair wall of a conventional example is installed on an existing sheet pile revetment.

[Explanation of symbols]

1 Yaita revetment 2 underwater 3 steel sheet pile wall 3a New steel sheet pile wall 4 upset 5 tie rods 6 U type steel sheet pile 7 subsoil 8 Padding earth and sand 10 Superstructure 11 joints 12 Web Department 14 coupling hardware 15 Water blocking filling material 16 convex 17 joint 18 recess 19 Projection 19a Rear flange 20 sheet pile halves 21 flat plate 22 Wide panel steel sheet pile 23 Straight steel sheet pile wall 24 spacer 25 metal fittings 26 Time-curable material 27 Locking bracket 28 Gibel 29 river banks 30 metal fittings

Claims (10)

[Claims] 1. A repaired revetment structure for an aged sheet pile wall composed of steel sheet pile walls in which uneven portions are alternately continuous, and is in contact with a convex portion of the existing steel sheet pile wall, or is a straight line slightly away from the convex portion. -Shaped steel sheet pile wall is constructed, the straight steel sheet pile wall has joints at both ends, and the central flat plate portion is a wide panel steel sheet pile, and the existing steel sheet pile wall of the flat plate portion is formed. A wide panel-shaped steel sheet pile in which a projecting portion made of CT section steel, H section steel, flat steel or the like is joined at a position opposed to the concave portion of the existing steel sheet pile wall. A repaired revetment structure for an aged sheet pile revetment, which is constructed by being installed so as to be loosely fitted in the recess and fitted to the joint. 2. The wide panel-shaped steel sheet pile forming the straight steel sheet pile wall faces a plurality of recesses of the existing steel sheet pile wall, and is provided in at least two recesses of the plurality of recesses. 2. The repaired revetment structure for an aged seawall revetment according to claim 1, wherein a plurality of the projections are joined so that the projections for enhancing the bending rigidity are loosely fitted. 3. A revetment seawall structure for an aged sheet pile wall composed of steel sheet pile walls in which uneven portions are alternately continuous, and is in contact with the convex portion of the existing steel sheet pile wall, or is a straight line slightly away from the convex portion. -Shaped steel sheet pile wall is constructed, the straight steel sheet pile wall has joints at both ends, and the central flat plate portion is a wide panel steel sheet pile, and the existing steel sheet pile wall of the flat plate portion is formed. A wide-panel steel sheet pile with a protruding member such as a dowel joined to the side surface is constructed so as to be installed so as to fit the joint, and a restored seawall structure for an aged sheet pile revetment. . 4. A projecting member, such as a dowel, is joined to the surface of the existing steel sheet pile wall on the side of the new linear steel sheet pile wall. Restoration revetment structure of deteriorated sheet pile revetment described in paragraph. 5. The joint portion of the steel sheet pile having a wide panel shape is a member obtained by dividing a straight sheet pile into halves and joined to both ends of the flat plate portion, respectively.
A repaired revetment structure for an aged sheet pile revetment according to any one of claims 1 to 4. 6. In the gap between the existing steel sheet pile wall and the new linear steel sheet pile wall, various fillers such as sand, gravel, cohesive soil, and time-curable material are used alone or as a mixture. The restoration revetment structure for an aged sheet pile revetment according to any one of claims 1 to 5, which is filled. 7. A method of repairing an aged sheet pile revetment, which comprises steel sheet pile walls having concavo-convex portions alternately continuous, wherein joints are provided at both ends, and the central flat plate portion is a wide sheet steel sheet pile, and
A wide panel-shaped steel sheet pile, in which a protrusion made of CT section steel, H section steel, flat steel, or the like, is joined at a position of the flat plate portion facing the recess of the existing steel sheet pile wall, Of the steel sheet pile wall, or a little away from the convex portion, so that the projection part loosely fits into the recessed part of the existing steel sheet pile wall, and is sequentially placed while fitting the joint. Repairing method for aged seawall revetment, which is characterized by constructing straight steel sheet pile wall. 8. A wide panel steel in which a protrusion made of CT-section steel, H-section steel or flat steel or the like for strengthening bending rigidity is joined to a position of the flat plate portion facing the recess of the existing steel sheet pile wall. A wide panel-shaped steel sheet pile in which a projecting member such as a dowel is joined to the existing steel sheet pile wall side surface of the flat plate portion is used in place of the sheet pile, and restoration of an aged seawall according to claim 7. Construction method. 9. Before constructing said straight steel sheet pile wall,
9. A restoration method for an aged sheet pile revetment according to claim 7 or claim 8, characterized in that a projecting member such as a dowel is attached to the surface of the existing steel sheet pile wall on the side of the new linear steel sheet pile wall in advance. . 10. Various kinds of fillers such as sand, gravel, cohesive soil, and time-curable material are singly or mixed in the gap between the existing steel sheet pile wall and the new linear steel sheet pile wall. It fills up, It is any one of Claim 7 thru | or 9 characterized by the above-mentioned.
Restoration method of the deteriorated sheet pile revetment described in paragraph.