JP2002322628A - Covering panel of ocean steel structure, reinforcement structure and reinforcing construction method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a reinforcing structure of an ocean steel structure capable of easily performing quality control and construction management, and to provide a covering panel used in the structure at a construction site of the ocean structure having severe work environment. SOLUTION: The reinforcing structure of the ocean steel structure is provided with a guide member 18 provided on a connecting part 12 of a steel pipe pile 10 through a shock absorbing material 14, a sheet-like shock absorbing material 17 covering the outer peripheral surface of the steel pipe pile, a plurality of covering panels 20, 30 connected in the vertical direction along the outer peripheral surface of the steel pipe pile through the sheet-like shock absorbing material, and fixing members 13, 16 fixing the respective covering panels. The covering panel 30 is provided with a precast concrete-made body 32 formed like a curved surface, guide receiving members 22 provided at both ends of the body, a groove 21 provided in the inner peripheral surface of the body, and a shock-resisting sheet provided on the outer peripheral surface of the body.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a panel for covering and protecting a marine steel structure formed by connecting a plurality of steel pipe piles, and a reinforcement of a marine steel structure formed by connecting a plurality of steel pipe piles. Structure, a construction method for reinforcing a marine steel structure formed by connecting a plurality of steel pipe piles, and a panel for protecting the steel pipe piles constituting the marine steel structure, and a reinforcing structure for the steel pipe pile. And a method for reinforcing the steel pipe pile.

[0002]

2. Description of the Related Art An offshore steel structure in which a plurality of steel pipe piles are cast on the sea floor or the seashore and connected to form a wall.
For example, a quay of a harbor, a wall for landfill construction, and the like are known. The steel pipe piles that make up these offshore steel structures are coated with anticorrosion paints and anticorrosion sheets to prevent corrosion due to salt. In some cases, corrosion may progress due to damage to the surface coating material.

[0003] In order to solve the problems in such offshore steel structures, for example, Japanese Patent Application Laid-Open No. 2000-17681 discloses a reinforcing structure for offshore steel structures. In this reinforcing structure, a titanium thin plate is installed at a predetermined distance from a plurality of steel pipe piles, and the titanium thin plate is fixed by bolts extending from a connection portion between the steel pipe piles, and this is formed as a formwork. It is constructed by placing underwater non-separable concrete between a steel pipe pile and a titanium sheet, thereby protecting the steel pipe piles that constitute the offshore steel structure from corrosion, and The conductive concrete layer is protected by a thin titanium plate.

[0004]

However, in the above-mentioned conventional reinforcing structure, concrete must be cast on site at a construction site of an offshore structure whose working environment is relatively harsh. -The labor required for construction management is very complicated.

[0005] Further, if the conventional reinforcing structure is damaged, even if it is partial, in order to repair it, the titanium sheet and the water-inseparable concrete layer are removed. Then, a new work of installing a titanium thin plate and a work of placing inseparable concrete in water must be performed. Therefore, since relatively large-scale construction equipment is required, there is a drawback that maintenance work and cost are increased.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems of the prior art, and its object is to provide a marine apparatus which has good impact resistance when a floating object or a ship collides, and has excellent workability. An object of the present invention is to provide a panel for covering a steel structure.

Another object of the present invention is to provide a reinforcement of a marine steel structure which can be easily removed when the reinforcement structure is damaged and which can be repaired by relatively simple construction equipment. It is to provide a structure and a reinforcing method. Another object of the present invention is to reinforce a marine steel structure capable of easily performing quality control and construction management compared with the conventional technology even at a construction site of a marine structure where the working environment is relatively harsh. It is to provide a structure and a reinforcing method.

[0008]

According to the present invention, there is provided a panel for covering and protecting a marine steel structure formed by connecting a plurality of steel pipe piles, the panel being formed of a concrete formed into a curved surface. A main body portion, a guide receiving portion provided at both ends of the main body portion so as to engage with a guide member for guiding the panel along the peripheral surface of the steel pipe pile, and a main body such that a cord body suspending the panel passes therethrough. A panel provided for a marine steel structure, comprising: a groove provided in the portion; and an impact-resistant sheet provided on an outer peripheral surface of the main body portion in order to increase a resistance to an impact acting on the main body portion from the outside. Provided.

Further, according to the present invention, there is provided a reinforcing structure for a marine steel structure in which a plurality of steel pipe piles are connected, wherein a guide member provided at a connection portion of the steel pipe piles via a buffer material, and a steel pipe pile are provided. And a plurality of curved precast concrete panels which are engaged with the guide member and are vertically connected along the outer peripheral surface of the steel pipe pile via the sheet-like cushioning material. And a fixing means for fixing each of the curved precast concrete panels to the offshore steel structure.

Further, according to the present invention, there is provided a method for reinforcing a marine steel structure formed by connecting a plurality of steel pipe piles, wherein a guide member is provided at a connection portion of the steel pipe piles, and an outer peripheral surface of the steel pipe pile is formed. The curved precast concrete panel is covered with a sheet-like cushioning material, and is hung down along a steel pipe pile by a cord while the both ends of the curved precast concrete panel are engaged with the guide members, and the curved precast concrete panel is marine at a predetermined position. There is provided a reinforcing method characterized by constructing a reinforcing structure for a marine steel structure by fixing to a steel structure and repeating a process of lowering and fixing the curved precast concrete panel and a fixing process.

According to the present invention, there is provided a panel for covering and protecting a steel pipe pile constituting a marine steel structure, a concrete body formed into a curved surface, and a cable for suspending the panel. A groove provided in the main body portion so that the strip passes therethrough, a concave portion formed in the vertical and circumferential connection portion of the main body portion, a joint plate provided in each concave portion, A panel for covering a marine steel structure, comprising: a shock-resistant sheet provided on an outer peripheral surface of a main body portion in order to increase a resistance to an impact acting on the portion.

According to the present invention, there is provided a reinforcing structure for a steel pipe pile constituting a marine steel structure, comprising: a support member fixed to a predetermined position of the steel pipe pile in water; A plurality of curved precast concrete panels continuously connected to cover the entire peripheral surface of the steel pipe pile,
A reinforcing structure for a marine steel structure, comprising a filler injected into a gap between the surface of the steel pipe pile and the curved precast concrete panel and solidified, is provided.

According to the present invention, there is provided a method for reinforcing a steel pipe pile constituting a marine steel structure, comprising fixing a support member at a predetermined position in water of the steel pipe pile, and forming a curved precast concrete panel on the water. The curved precast concrete panel is annularly attached while being connected to the periphery of the steel pipe pile in an annular manner, and the annular panel connecting body is suspended by a cord body and suspended from above the water to the underwater support member. A reinforcing method characterized by reinforcing a marine steel structure by repeating a step of attaching to a marine steel structure.

[0014]

BEST MODE FOR CARRYING OUT THE INVENTION In the coating panel of the present invention,
It is preferable to use a colored sheet as the impact-resistant sheet provided on the outer peripheral surface of the main body in order to increase the resistance to the impact acting on the main body from the outside, thereby further improving the surrounding scenery. It is possible to change and harmonize with the surrounding environment. Here, as the impact-resistant sheet, it is possible to use a fiber sheet impregnated with a matrix resin and cured, and this fiber sheet can be adhered to the outer peripheral surface of the main body with an epoxy resin adhesive or the like. it can. Carbon fiber,
The fiber may be any one fiber selected from organic fibers such as aramid fiber, PBO fiber, polyester fiber, and high-strength polypropylene, or may be a hybrid type in which a plurality of the fibers are mixed. Also,
The matrix resin may include at least one kind of at least one of a room temperature-curable epoxy resin, a thermosetting epoxy resin, a polyester-based or vinylester-based resin, a polyamide resin, and a polycarbonate resin. Further, the fiber sheet may be a sheet in which fibers are arranged in one direction or in multiple directions in a sheet shape, or a cloth in which fibers are woven.

Since the covering panel of the marine steel structure of the present invention is fixed to the outer periphery of the steel pipe pile, the inner surface of the concrete body has a curved surface shape substantially the same as the outer peripheral surface of the steel pipe pile. Is preferable.

In the covering panel of the present invention, the guide receiving portion may be formed in accordance with the shape of the guide member provided on the steel pipe pile, and the outer periphery of the steel pipe pile is guided by the covering panel to the guide member. Anything that can be raised and lowered may be used. For example, a notch for engaging with the guide member may be provided at both ends of the covering panel to serve as a guide receiving portion, or the notch may protrude from both ends of the covering panel so as to engage with the guide member. It is possible to provide a guide member and to use this as a guide receiving portion.

Further, in the covering panel of the present invention, the groove provided in the main body so that the cords pass therethrough is formed in an inner peripheral surface of the main body in a direction corresponding to a vertical direction of the steel pipe pile. Preferably, the groove is not provided with a member for restricting the entry and exit of the cord.

It is preferable to use the above-mentioned panel for covering a marine steel structure as the curved precast concrete panel in the reinforcing structure of the present invention.

In the reinforcing structure according to the present invention, the cushioning member disposed at the connecting portion of the steel pipe pile exerts a strength against a binding force from the fixing means and acts from another member (for example, a curved precast concrete panel or the like). A material that combines both performances with elasticity that can reduce impact,
For example, it is preferable to use those formed from natural rubber, synthetic rubber, and vinyl chloride-based materials. Further, the cushioning member may be formed as a long member that can be arranged so as to be continuous from the lowermost position to the uppermost position of the guide member, or a fixing means for fixing the guide member may be used. It is possible to use one formed in a shape that can be intermittently arranged in a place where it has been set.

In the reinforcing structure of the present invention, the sheet-like cushioning material is also formed as a long member that can be disposed so as to be continuous from the lowermost position to the uppermost position of the curved precast concrete panel. Alternatively, a member formed so as to be interspersed between the curved precast concrete panel and the steel pipe pile so as not to directly contact with each other can be used.

In the reinforcing structure of the present invention, the guide member may be provided with a lowermost end indicating member for indicating a lowermost position of the curved precast concrete panel.

In the reinforcing structure of the present invention, the filler may be any material that has a fluidity enough to reach the gap between the steel pipe pile and the curved precast concrete panel, and that solidifies after being poured. For example, cement milk can be used.

[0023]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below. FIG. 1 is a schematic diagram showing a plan view of a reinforcing structure according to the present invention, and FIG. 2 is a schematic diagram cut along a one-dot chain line II-II in FIG. In FIG. 1, a plurality of steel pipe piles 10 are connected to form a seawall, and the sea side and the land side are separated by the wall body, and the upper end of the seawall is made of concrete. A coping 50 is provided, and the reinforcing structure of the present invention is applied to this marine steel structure.

In this reinforcing structure, the connecting portion 1 of the steel pipe pile 10
2, a guide member 18 is arranged via an internal spacer 14 and an adjusting spacer 15, a predetermined portion of the outer peripheral surface of the steel pipe pile 10 is covered with a sheet-like cushioning material 17, and the covering panels 20, 30 are vertically arranged. The steel pipe pile 10 is engaged with the guide member 18 so as to
Are mounted on the outer peripheral surface of the
The outer spacer 13 is disposed so as to abut on 30.
A support plate 19 is provided on the outer spacer 13, and a rod 16 passes through the inner spacer 14, the adjustment spacer 15, and the guide member 18 and is fixed by a nut 11 a, and the rod 16 extends to extend the outer spacer 13 and the support plate. 19, and is fixed with a nut 11a, and two covering panels 20 'are provided at the corners of the seawall.
And are similarly fixed.

Here, the covering panels 20, 30 will be described. 4A and 4B are perspective views of the covering panels 20 and 30, respectively. The covering panel 20 is a panel disposed at the top level, the covering panel 30 is a panel disposed from the second level to the bottom level, and both panels are curved surfaces formed in a stock yard or a factory at a construction site. Is a precast concrete product. The covering panels 20 and 30 include a concrete body 23 formed into a curved surface and a steel pipe pile 10.
And a guide receiving member 22 fixed to both ends of the main body 23 so as to engage with the guide member 18 guided along the peripheral surface of the main body 23. A groove 21 is formed in the inner peripheral surface of the main body 23 so as to extend in a direction corresponding to the vertical direction of the steel pipe pile 10, while the outer peripheral surface of the main body 23 is protected from impact acting on the main body 23 from the outer peripheral surface. An impact-resistant sheet (not shown) for increasing the proof stress is attached. The groove 21 is used for passing the vertical tightening wire 29. The main body 2 of the covering panel 20
The upper surface of 3 is formed flat, and the concave portion 24 is formed on the lower surface. On the other hand, a convex portion 31 is provided on the upper surface of the main body portion 23 of the covering panel 30, and a concave portion 24 is formed on the lower surface.
The convex portion 31 and the concave portion 24 are formed so as to fit each other. In particular, a waterproof material (not shown) such as a thin waterproof rubber is attached to the convex portion 31.

As the impact-resistant sheet, for example, a sheet made of carbon fiber or aramid fiber impregnated with a matrix resin and cured is used, and is attached to the outer peripheral surface of the main body with an epoxy resin adhesive or the like. I have.

Referring to the enlarged cross-sectional view of FIG. 3 as well, the reinforcement structure will be described in detail. A plurality of rods 16 penetrate through the joint 12a of the connecting portion 12 of the steel pipe pile 10 at predetermined intervals in the vertical direction. Each rod 16 is fixed by welding. These rods 16 have an internal spacer 1
4. The connecting spacer 1 and the guide member 18 are connected to each other.
It is inserted sequentially from two sides, and is fixed from above the guide member 18 by a nut 11a. These internal spacers 1
4. It is preferable that the adjusting spacer 15 and the outer spacer 13 are formed of hard rubber, so that these spacers have sufficient strength and cushioning when tightened.

The covering panels 20 and 30 are attached to the outer peripheral surface of the steel pipe pile 10 via the sheet-like cushioning material 17, and the guide receiving members 22 at both ends thereof are connected to the guide member 8.
Is engaged with the end. External spacers 13 are provided at the ends of the covering panels 20 and 30 so as to be in contact with each other. A support plate 19 is provided on the external spacers 13, and a rod 16 penetrating the external spacer 13 and the support plate 19 is provided. The nut 11b is screwed and tightened in the horizontal direction by tightening the nut 11b. The plurality of covering panels 20 and 30 are continuously provided in the vertical direction along the outer peripheral surface of the steel pipe pile 10.
Numeral 30 is longitudinally fastened by a vertical tightening wire 29 extending from the coping 50 to the lowermost covering panel 30.

Here, the inner spacer 14, the adjusting spacer 15, the sheet-like cushioning material 17, and the outer spacer 13
Is formed as a long member so that the cross section as shown in FIG. 3 extends in the vertical direction of the steel pipe pile 10,
These members except the sheet-like cushioning material 17 include a rod 16
Holes are formed at predetermined intervals to allow the holes to pass therethrough.

The guide member 18 is shown in FIGS. 9A and 9B.
As shown in the figure, a guide plate 18a and a lower end position indicating plate 18b fixed so as to be orthogonal to the lower end thereof.
It is composed of The guide plate 18a is a long member in which the guide receiving members 22 of the covering panels 20 and 30 connected in the vertical direction are engaged. Holes 18c are formed at predetermined intervals to allow the rod 16 to pass therethrough. I have. The lower end position indicating plate 18b is, as shown in FIGS. 2 and 3, the lower end position of the covering panel 30 so that the lower end surface of the covering panel 30 which is vertically connected comes into contact with and is fixed there. Is a member for instructing.

FIG. 8 is a sectional view showing an embodiment different from those of FIGS. 1 to 7 in a partially enlarged manner. here,
The covering panel 60 has cutouts formed at both ends of the main body 61 to form guide receiving portions 61a.
A plurality of grooves 62 and 63 are formed on the inner peripheral surface of the main body 61. An impact-resistant sheet (not shown) is attached to the outer peripheral surface of the main body 61 in order to increase the resistance to an external shock acting on the main body. Is being worn. In FIG. 8, the reinforcing structure is such that a fixing metal 75 is fixed to the joint 12 a of the connecting portion 12 of the steel pipe pile 10 by welding, and the fixing metal 75 is provided with a plurality of screw holes at predetermined intervals in the vertical direction. A rod 77 is fixed to the screw hole. The rod 77 is provided with a rubber packing 74 as a cushioning material and an internal spacer 73.
Inserted in order from the side, fixed from above the internal spacer 73 by a nut 78a, further extended by a coupler joint 78c, a rubber packing 72, a guide member 71, and an external spacer 76 are inserted here, and a nut 78d is used. Are tied. These rubber packing 74, internal spacer 73, rubber packing 72, guide member 71 and external spacer 76
Is formed as a long member extending in the vertical direction of the connecting portion 12 of the steel pipe pile 10, and a plurality of rod insertion holes are formed at predetermined intervals.

Here, the inner spacer 73 is a steel pipe pile 1
Abutting portions 73b formed on both sides along a curved surface along the outer peripheral surface of the steel pipe pile 10 are provided between the abutting portions 73b and the outer peripheral surface of the steel pipe pile 10.
9 are provided.

The guide member 71 is formed in a shape to engage with the guide receiving portions 61a at both ends of the main body 61. That is, the guide member 71 is engaged with the guide receiving portion 61a of the covering panel 60, and
In addition to having the function of guiding the movement of the cover panel 60 in the vertical direction, the coating panel 60 has a function of pressing both ends of the covering panel 60 toward the outer peripheral surface of the steel pipe pile 10 and fixing the same. Therefore, since the guide member 71 in FIG. 8 is a member having the same operation and effect as the guide member 18 and the external spacer 13 in FIG. 3, the construction can be further simplified.

Next, a method of reinforcing a marine steel structure according to the present invention will be described. (1) Preparation Step A through-hole 51 is formed in a vertical direction in a coping 50 provided at an upper end of the steel pipe pile 10. This through hole 51 is formed at a position communicating with the groove 21 of the covering panel 20 in FIG.

(2) Rod Mounting Step A through hole for a rod is formed in the joint 12a of the steel pipe pile 10 in a vertical direction at a predetermined interval, and a rod 16 is inserted into each through hole and fixed by welding. (A). Alternatively, a long fixing metal member 81 in which a screw hole for a rod is formed in advance at a predetermined interval is attached in the vertical direction of the joint 12a.
As shown in FIG. 5B, the fixing may be performed by welding, and the rod 16 may be screwed into the screw hole of the fixing bracket 81 and fixed. When a through hole is formed in the joint 12a as shown in FIG. 5A, the rod 16 may not be able to be inserted through the center of the joint 12a depending on the position of the internal joint 12b. When the fixing fitting 81 is used as shown in (b), the rod 16 can be positioned at the center of the joint 12a regardless of the position of the internal joint 12b.

(3) Step of Installing Buffer Member A plurality of rods 1 can be formed by any of the methods shown in FIGS. 5 (a) and 5 (b).
When 6 is fixed at a predetermined interval, the internal spacer 14 and the adjusting spacer 15 are inserted through the rod 16, and the sheet-like cushioning material 17 is attached to the outer peripheral surface of the steel pipe pile 10. Note that the sheet-like cushioning material 17 may be configured to be attached to the inner surface of the covering panel 30 at the time of manufacturing the covering panel 30. In this case, the work of attaching the sheet-like cushioning material 17 in this step is omitted. You.

(4) Guide Member Installation Step Next, as shown in FIG.
The guide members 18 are temporarily fastened by the nuts 11a.

(5) Step of Installing Covering Panel Next, FIG. 7 is a view when three levels of the covering panels 30 are installed from below, and FIG. 7A is a partially enlarged cross-sectional view. (B) is a longitudinal sectional view. FIG.
In H. W. L indicates the sea level at high tide. When the temporary fastening of the guide member 18 is completed, the vertical fastening wire 29 is inserted into the through hole 51 provided in the coping 50 and suspended. Then, the vertical fastening wire 29 is fixed along the groove 21 of the covering panel 30 on a marine scaffold or a workbench, and the guide receiving member 22 of the covering panel 30 is engaged with the guide member 18. Then, the panel is suspended by the height of one covering panel 30. Another covering panel 30 is placed on the upper surface of the suspended covering panel 30, the vertical tightening wires 29 are similarly arranged along the grooves 21, and the respective convex portions 31 and concave portions 24 are fitted and fixed. Then, it is suspended by the length of one sheet. Hereinafter, these steps are repeated, and finally, after the covering panel 20 is mounted and fixed, the nut 11a of the guide member 18 in the temporarily tightened state is tightened.

(6) Attachment of External Spacer, etc. Next, as shown in FIG. 3, the external spacer 13 and the supporting plate 19 are passed through the rod 16, and the nut 11b screwed to the rod 16 is tightened. The spacer 13 is pressed against the covering panels 20 and 30, thereby ensuring the fixed state of the covering panels 20 and 30. Finally, an upper metal piece 52 as a height adjusting member is inserted into a gap between the top covering panel 20 and the coping 50, and the longitudinal tightening wire 29 is pulled from above the coping 50, and a certain amount of tension is applied thereto. Once installed and fixed, the reinforcement method is complete.

(7) Repair work In addition, a floating object or a ship collides with the covering panel 20,
When the part 30 is partially damaged, the tension state of the vertical tightening wire 29 provided on the covering panels 20 and 30 is released, and the nut 11b is loosened on a marine scaffold or a work platform, and the outside is removed. The spacer 13 and the support plate 19 are removed, and the top covering panel 20 is removed. Then, while pulling up the vertical tightening wire 29, it is sequentially removed from the upper covering panel 30, only the damaged covering panel is replaced, and the undamaged covering panel is returned to return to the above (5) (6). Attach it in the same way as

Next, FIG. 8 is a partially enlarged sectional view showing an embodiment different from those in FIGS. here,
In the covering panel 60, notches are formed at both ends of the main body 61 to form guide receiving portions 61a.
A plurality of grooves 62 and 63 are formed on the inner peripheral surface of the main body 61. An impact-resistant sheet (not shown) is attached to the outer peripheral surface of the main body 61 in order to increase the resistance to an external shock acting on the main body. Is being worn.

In FIG. 8, the reinforcing structure is such that a fixing metal 75 is fixed to the joint 12a of the connecting portion 12 of the steel pipe pile 10 by welding, and the fixing metal 75 is provided with a plurality of screw holes at predetermined intervals in the vertical direction. The rod 77 is fixed to the screw hole. The rod 77 is provided with a rubber packing 74 as a cushioning material and an internal spacer 73.
Inserted in order from the side, fixed from above the internal spacer 73 by a nut 78a, further extended by a coupler joint 78c, a rubber packing 72, a guide member 71, and an external spacer 76 are inserted here, and a nut 78d is used. Are tied. These rubber packing 74, internal spacer 73, rubber packing 72, guide member 71 and external spacer 76
Is formed as a long member extending in the vertical direction of the connecting portion 12 of the steel pipe pile 10, and a plurality of rod insertion holes are formed at predetermined intervals.

Here, the inner spacer 73 is the steel pipe pile 1
Abutting portions 73b formed on both sides along a curved surface along the outer peripheral surface of the steel pipe pile 10 are provided between the abutting portions 73b and the outer peripheral surface of the steel pipe pile 10.
9 are provided. Further, the guide member 71 is attached to the main body 6.
1 are formed so as to engage with the guide receiving portions 61a at both ends. That is, the guide member 71 has an action of engaging with the guide receiving portion 61a of the covering panel 60 and guiding the vertical movement of the covering panel 60,
It has the effect of pressing and fixing both ends of the covering panel 60 toward the outer peripheral surface of the steel pipe pile 10. Therefore, FIG.
The guide member 71 in FIG.
Since it is a member having the same operation and effect as the outer spacer 8 and the outer spacer 13, the construction can be further simplified.

Next, FIG. 10 shows a coating panel 120 used for coating a steel pipe pile provided at an interval from other steel pipe piles. This coating panel 120 is also provided as shown in FIG. A plurality of steel pipe piles can be used to cover an offshore steel structure. Covering panel 120
Is a curved precast concrete product formed in a stock yard or a factory at a construction site, like the covering panels 20 and 30 in FIGS. 4 (a) and 4 (b). Main unit 123
A plurality of recesses 128, 127 are formed in the vertical connecting portion, and a plurality of recesses 125, 126 are formed in the circumferential connecting portion. Each of the recesses 125, 126, 127, 128 has a joint plate 125a, 126a, 127a, 12
8a are buried, and holes 125b, 126b, 127b, 128b for inserting bolts (not shown) are provided respectively. The main body 123 has a groove 121 on the inner peripheral surface so as to extend in a direction corresponding to the up and down direction of the steel pipe pile 110.
A shock-resistant sheet (not shown) similar to the covering panel 20 of FIG. 4 is attached to the outer peripheral surface, and the convex portion 13 is provided on the upper surface.
1 is provided, and a concave portion 124 is formed on the lower surface. The convex portion 131 and the concave portion 124 are formed so as to be fitted to each other, and a waterproof material (not shown) such as a thin waterproof rubber is attached to the convex portion 131. In addition, it is also possible to form flat like the covering panel 30 without providing the convex part 131 on the upper surface of the covering panel 120 arrange | positioned in the uppermost stage.

Next, FIGS. 11A and 11B show the steel pipe pile 110.
FIG. 12 is a perspective view for explaining a step of reinforcing
(A) and (b) are perspective views for explaining a step that follows the step of FIG. 11. Referring to FIG. 12 (b), steel pipe pile 11
The reinforcing structure of FIG. 0 is a structure for reinforcing a steel pipe pile 110 provided at a distance from other steel pipe piles, and a ring fixed to a predetermined position of the steel pipe pile 110 in water. Support member 140 and the support member 1
A plurality of covering panels 120 connected continuously so as to cover the entire peripheral surface of the steel pipe pile 110 from 40 to a predetermined position on the water
And a filler (not shown) injected into the gap between the steel pipe pile 110 and the covering panel 120 and solidified.

In order to further detail this reinforcing structure, the following will be described.
The method will be described. (1) Mounting Step of Support Member First, the support member 140 is assembled on the work barge 130. The support member 140 is assembled, for example, by attaching a pair of semicircular members 140a so as to be wound around the outer periphery of the steel pipe pile 110 and loosely temporarily fastening them with the bolts 141. The provisionally fastened support member 140 is slid downward along the steel pipe pile 110 to be immersed in the water, and a diving worker fully tightens the bolt 141 at a predetermined depth and fixes the bolt to the steel pipe pile 110.

(2) Assembling process of covering panel Next, a pair of covering panels 120
Are joined, bolts are inserted through holes in the joint plate, and tightened to assemble in a semicircular shape. A pair of the semicircular covering panels 120 is wound around the outer periphery of the steel pipe pile 110, bolts are inserted through the joint plate, and the bolts are tightened to assemble the annular panel connector 115. The panel connector 115 is disposed at the lowermost level, and a slidable clearance is secured between the panel connector 115 and the steel pipe pile 110. Panel connector 115
Is suspended by a wire 129 as shown in FIG.

(3) Step of hanging down the covering panel The lowermost panel connected body 115 suspended by the wire 129
Is slid down along the steel pipe pile 110 to make the waterline 1
The operation is stopped at 60, and a new panel connector 115 is assembled on the panel connector 115. The new panel connector 115 is assembled in the same manner as in the above (2) assembling process of the covering panel, bolts are inserted into the upper and lower joint plates, and the bolts are tightened to connect the panel connectors 115 to each other. Thereafter, as shown in FIG. 11 (b), the step of sliding down and the step of assembling the covering panel are sequentially repeated. The bottom panel connector 115
However, as shown in FIG. 12 (a), when reaching the support member 140, the panel connector 115 of a predetermined number of stages is further stacked up to a position higher than on the work barge 130, and each is connected to the upper and lower joint plates. Connect with bolts.

(4) Attaching Step of Protective Member As a protective member for protecting the upper surface of the uppermost panel connector 115, a member 1 having the same configuration as the support member 140 is used.
50, the steel pipe pile 110 on the top panel connector 115
Attach so that it wraps around.

(5) Filler Injection Step Finally, a cement-based liquid is injected into the gap between the panel connector 115 and the steel pipe pile 110. The cement-based liquid is injected from an erector hole formed in the covering panel 120 or the top panel connecting body 11
5 and the steel pipe pile 110 can be injected. In addition, (4) the attaching step of the protective member,
(5) The step of injecting the filler is not necessarily performed, and the necessity may be determined as appropriate.

[0051]

In the covering panel according to the first aspect of the present invention, a guide receiving portion is formed at both ends of a concrete body, and a groove is provided in the body to allow a cable body for hanging the panel to pass. Therefore, if the panel is moved up and down by the cord body that has passed through the groove while engaging the guide receiving portion with the guide member, the installation work can be performed relatively easily. In addition, since the impact-resistant sheet is provided on the outer peripheral surface of the main body, good impact-resistance performance can be maintained even when a floating object or a ship collides on the sea.

In the reinforcing structure and the reinforcing method according to the second to fourth aspects of the present invention, a guide member is provided at a connecting portion of the steel pipe pile via a buffer material, and a sheet-like buffer material is provided on the outer peripheral surface of the steel pipe pile. , Good impact resistance against impacts from floating objects and ships is obtained. In addition, since a plurality of curved precast concrete panels are vertically connected along the outer peripheral surface of the steel pipe pile and fixed by fixing means, if the curved precast concrete panel is damaged, the fixing means is fixed. , And only the damaged panel can be removed and replaced. Therefore, as compared with a reinforcement structure constructed by casting concrete at a construction site, labor for repairing the construction and simplification of construction equipment can be achieved.

In the covering panel according to the fifth aspect of the present invention, since joint plates are provided at the connecting portions in the vertical and circumferential directions of the main body, a plurality of fasteners such as bolts are passed through each joint plate. If the covering panels are connected, it is possible to form a ring-shaped connection body to be wrapped around the steel pipe pile.
Then, if the ring-shaped panel connected body is suspended through the cord in the groove of the panel main body, it can be moved up and down along the steel pipe pile, and the installation work can be performed relatively easily. .

In the reinforcing structure according to the sixth aspect of the present invention, a support member is provided at a predetermined position of the steel pipe pile underwater, and the entire peripheral surface of the steel pipe pile is covered with a concrete panel from the support member to a predetermined height above the water. Since the filler is injected and solidified into the gap between the steel pipe pile and the concrete panel, the steel pipe pile constituting the marine steel structure is reliably protected from the impact due to the impact from floating objects or ships.

In the reinforcing method according to a seventh aspect of the present invention, the supporting member is fixed at a predetermined position in the water of the steel pipe pile, the annular panel connecting body is mounted on the steel pipe pile, and the annular panel connecting body is connected to the cable body. While hanging and suspending from the water to the underwater support member, the process of sequentially mounting and stacking the panel connected body on the steel pipe pile is repeated to form a reinforcing structure for covering and protecting the underwater portion of the steel pipe pile. It is now possible to reduce underwater work by submers who are extremely dangerous.

[Brief description of the drawings]

FIG. 1 is a schematic view showing a plane of a reinforcing structure according to the present invention.

FIG. 2 is a schematic view cut in a longitudinal direction along a dashed line II-II of FIG. 1;

FIG. 3 is an enlarged sectional view showing a portion III in FIG. 1 in an enlarged manner.

FIG. 4A is a perspective view showing a covering panel according to the present invention, and FIG. 4B is a perspective view of the covering panel having a shape different from that of FIG.

FIGS. 5 (a) and 5 (b) are views for explaining steps of fixing rods as fixing means with different configurations.

FIG. 6 is a view for explaining a step performed after the step of FIG. 5;

FIGS. 7A and 7B are views for explaining a step performed after the step of FIG. 6;

FIG. 8 is a partially enlarged sectional view of an embodiment different from FIGS. 1 to 7;

9A is a plan view of the guide member as viewed from above, and FIG. 9B is a front view of the guide member.

FIG. 10 is a perspective view showing a covering panel for covering and protecting a steel pipe pile, which is an embodiment different from FIG. 4;

FIGS. 11A and 11B are perspective views for explaining steps for reinforcing a steel pipe pile.

12 (a) and (b) are perspective views for explaining a step that follows the step of FIG.

[Explanation of symbols]

10, 110 steel pipe pile 12 connecting part 13 external spacer (fixing means) 14 internal spacer (cushioning material) 16 rod (fixing means) 17 sheet-like cushioning material 18 guide member 20, 30, 40, 60, 120 coating panel 21, 121 Groove 22 Guide receiving member 23, 123 Main body 29 Vertical tightening wire (string) 61 Guide receiving portion 71 Guide member 72 Rubber packing (cushioning material) 73 Internal spacer (cushioning material) 74 Rubber packing (cushioning material) 77 Rod (Fixing means) 79 Rubber packing for cushioning 115 Panel connection body (annular panel connection body) 125, 126, 127, 128 Depressed portion 125a, 126a, 127a, 128a Joint plate 129 Wire (corrugated body) 140 Supporting member

Claims (7)

[Claims] 1. A panel for covering and protecting a marine steel structure formed by connecting a plurality of steel pipe piles, comprising: a curved concrete-shaped main body; Guide receiving portions provided at both ends of the main body portion so as to be engaged with a guide member guided along a surface, a groove provided in the main body portion so that a cord for hanging the panel passes therethrough, A covering panel for a marine steel structure, comprising: a shock-resistant sheet provided on an outer peripheral surface of the main body to increase a resistance to an impact acting on the main body. 2. A reinforcing structure for a marine steel structure formed by connecting a plurality of steel pipe piles, wherein a guide member provided at a connection portion of the steel pipe piles with a buffer material interposed therebetween covers an outer peripheral surface of the steel pipe piles. And a plurality of curved precast concrete panels that engage with the guide member and are vertically connected along the outer peripheral surface of the steel pipe pile via the sheet-shaped cushioning material. A reinforcing structure for a marine steel structure, comprising: fixing means for fixing a precast concrete panel to a marine steel structure. 3. The reinforcing structure for a marine steel structure according to claim 2, wherein the guide member includes a lowermost end indicating member for indicating a lowermost position of the curved precast concrete panel. 4. A method for reinforcing a marine steel structure formed by connecting a plurality of steel pipe piles, wherein a guide member is provided at a connection portion of the steel pipe piles via a buffer material, and a guide member is provided on an outer peripheral surface of the steel pipe piles. A sheet-like cushioning material is provided at a predetermined position, and both ends of the curved precast concrete panel are hung down along a steel pipe pile by a cord while being engaged with the guide member, and the curved precast concrete panel is placed at a predetermined position. A method for reinforcing a marine steel structure by fixing the curved precast concrete panel to the marine steel structure by repeating the process of lowering and fixing the curved precast concrete panel. 5. A panel for covering and protecting a steel pipe pile constituting a marine steel structure, wherein a concrete body formed into a curved surface and a cable body for suspending the panel pass therethrough. And a joint plate embedded in each of the recesses formed in the vertical and circumferential connection portions of the main body portion, and acting on the main body portion from the outside. A covering panel for a marine steel structure, comprising: a shock-resistant sheet provided on an outer peripheral surface of a main body portion in order to increase resistance to impact. 6. A reinforcing structure for a steel pipe pile constituting an offshore steel structure, comprising: a support member fixed to a predetermined position of the steel pipe pile in water; and a steel pipe pile extending from the support member to a predetermined position on the water. A marine steel structure comprising: a plurality of curved precast concrete panels provided so as to cover a peripheral surface; and a filler injected into a gap between the surface of the steel pipe pile and the curved precast concrete panel and solidified. Reinforcement structure for objects. 7. A method for reinforcing a steel pipe pile constituting an offshore steel structure, comprising fixing a support member at a predetermined position in water of the steel pipe pile, and connecting a curved precast concrete panel on the water. A step of attaching the curved precast concrete panel in an annular shape while attaching the annular panel connecting body in a ring shape to the peripheral surface of the steel pipe pile and suspending the annular panel connecting body from above the water to the support member in water. A reinforcing method characterized by reinforcing offshore steel structures by repeating.