JPS62202128A - Corrosion-resistant covering structure for steel tubular sheet pile - Google Patents

Abstract

PURPOSE:To prevent the occurrence of damage to steel tubular sheet piles as well as to reduce the cost of operations by a method in which a corrosion- resistant covering part provided on the sea side of a steel tubular sheet pile is set and welded over a bracket and a hardening material is packed into the space formed by the sheet pile, the covering part, and a closing part. CONSTITUTION:The space between steel tubes 2 is closed by a coupler 3 formed by mutually fitting tubes of a smaller diameter than the tube 2 through their grooves 4 to build up a steel tubular sheet pile 1. Both edges of a corrosion- resistant covering member 6 of a rigid rubber, etc., having an arcuate cross section and given dimensions is extended to a position near the coupler 3 over an L-shaped bracket 7. The tip of the bracket 7 is contacted with and integrally welded to a given position on the sea side of the tube 2 and the tube 2 is covered by the member 6. A closing plate 12 is also fitted into the coupled portion 8 of the member 6 and cement mortar is injected into the spaces 14 and 13 formed by the tube 2, the member 6, and the plate 12 and hardened. The occurrence of damage to the closing parts can thus be prevented, and the cost of operations can be reduced.

Description

[Detailed description of the invention] The present invention prevents corrosion of steel pipe sheet piles by longitudinally protecting the sea side of steel pipe sheet piles installed underwater for seawalls. This is an opening for coating and anti-corrosion painting of 414 pipe sheet piles.

In the case of steel pipe sheet piles consisting of #I pipes 23 and joints for strengthening the seawall on the Naraumi side, the surface of the steel pipe sheet piles where the steel pipe sheet piles come into contact with seawater is susceptible to corrosion, so the surface of the steel pipe sheet piles must be protected. The anti-corrosion structure of I! i! It is being proposed.

According to this proposal, the J, sea urchin, steel pipe sheet pile 01 shown in FIG. hair,
It is constructed by connecting this with a joint 03 fitted with one side of a T-shaped cross section, and the cross-section has a mouth-like shape with two openings on the sea side near the joint 03 of each adjacent 1g steel pipe 02 and oriented vertically. Bracket I-04 is attached to bolt stud 05 installed on steel pipe 02, and fastened with nuts 1-06. A seal bottom plate 07 having a shape along the surface of the steel pipe 02 is provided.

Then, a glass carpet reinforced resin (FRp>
A manufactured arc-shaped anti-corrosion cover panel o8 is attached to approximately half the circumference of the steel pipe 02, and this anti-corrosion cover panel o8
The edge of is overlapped with angle material 09 and Pol 1-01
It is fixed to the bracket 04 and covered with the bracket 04 and the oak 1-oii.

In addition, one I"RPM auxiliary cover 012 is inserted between the pair of opposing angle members 09.09, and the lower part of each is dropped into the sealing mechanism of the bottom plate 07 and placed. Therefore, filler material 013 is placed in the recess between the W4 pipe sheet pile 01, the anti-corrosion cover panel 08 and the auxiliary cover 012.
is filled to form the anti-corrosion structure of the steel pipe sheet pile 01.

Furthermore, in another prior example, in FIGS. 6 and 7 [as shown in FIGS. ! it tube 02
A new U-shaped bracket 04 oriented in the vertical direction is welded to two locations on the sea side near the pipe fitting joint 03, and the joint 03 and the joint 03 ( : A seal bottom plate 07 shaped to follow the steel pipe 02 near J is fixed, and the edge of the anti-corrosion cover 014 attached and fixed to the bracket 1 with the anti-corrosion cover 04 oriented vertically is installed beyond the bracket 04. At the same time, the edge phase U is overlapped and fixed by a pole I"015J5 and a nut 01G, or in the former format,
The overlap of the edges of the anti-corrosion cover 014 + i joint is the joint 0
Port!・018JノYo and Pututo0
The latter type of fastening work was carried out in accordance with No. 19.

(1, -Toboru, 1C') However, in the case of the f!2 proposal of Jitsugyo GO-45750, the auxiliary cover 012 is located between the brackets 04 attached to the steel pipe 02, so the auxiliary cover 012 is There is no free end of the anti-corrosion cover panel 08 in the part where the edge is inserted, and the anti-corrosion cover panel 08 cannot be expected to absorb the slack due to dimensional errors in installing the steel pipe 02, and directly exerts If on the auxiliary cover 012, causing the auxiliary cover to The loss of 012 cannot be avoided.

In addition, since the auxiliary cover 012 is located below the bracket 04, that is, on the sea side away from the joint 03, the auxiliary cover 012
2 is installed wider, and the recess formed between the steel pipe sheet pile 01, the anti-corrosion cover panel j5, and the auxiliary cover is filled with 1i.
As the amount of filler used increases, this filler 01
3, the stress applied to the auxiliary cover 012 became large and there was a tendency for the auxiliary cover 012 to break.

In yet another prior example, when driving steel pipe sheet piles 01, there is currently a 'misalignment' between the steel pipes 02 after eruption to the left and right or below L. S that caused
Installation of the anti-corrosion cover 014 on the pipe arrow 1i01 requires fixation under the sea, joining work of the hand-kneaded parts of the anti-corrosion cover 014 edge phase n, or extra work to reduce the slippage β1, so construction stage 1 is required. This method has the disadvantage of delaying the time and making the cost 1- more expensive.

1.111yr decision tc 6/) (7) -'t
J3 J: UFor this reason, the present invention
+: The steel pipe sheet pile that has overcome the Attach an anti-corrosion cover panel to the bracket attached to the bracket, install an auxiliary cover between the 75911 and 75911 facing each other near the joint, and fill the recess between the steel pipe sheet pile, the anti-corrosion cover panel, and the auxiliary cover with Li material. In the anti-corrosion structure for steel pipe sheet piles, the anti-corrosion coating member is attached to the brackets 1 to 1 which support the anti-corrosion coating member provided on the sea side of the steel pipes, beyond the brackets, and the anti-corrosion coating member is A bifurcated locking portion is formed on the edge oriented in the vertical direction, and both edges of the cold-closing member oriented in the vertical direction are fitted into the locking portion between the edges of the coated anti-corrosion member. However, the space formed by the steel pipe sheet pile, the anti-corrosion coating member, and the closing member was filled with a time-hardening filler. ! ! The mounting and joining means of the parts to be machined can be avoided, and the corrosion-resistant coating and the closing part (Δ) can be easily and effectively covered, and the manufacturing of the corrosion-proofing member and the closing member can also be carried out in a factory to ensure sufficient quality control. Therefore, the improvement in mechanical strength and the anticorrosion effect can be greatly improved.

In addition, in the present invention, since the coated anti-corrosion member is attached to the bracket (1) that supports the coated anti-corrosion member provided on the sea side of the steel pipe, the movement of this edge near this edge is prevented. In addition, both edges of the vertically oriented closing member were fitted between the bifurcated locking parts of the longitudinally oriented edges of the coated anti-corrosion member, so that both front and rear, left and right sides of the cast steel pipe were fitted. Or, even if a "shift" occurs in the vertical direction, the inconvenience of the anti-corrosion coating work is eliminated, the slack of the anti-corrosion coating member can be easily absorbed, and the free end near the edge of the anti-corrosion coating follows and is blocked. 1G scratches on parts can be prevented.

Furthermore, in the present invention, since the edge of the coated anti-corrosion member is attached beyond one racket, the width dimension of the closing member that fits into the engagement part between the edges of the anti-corrosion member must be shortened. At the same time, the volume of the space between the steel pipe sheet pile, the anti-corrosion member and the closing member can be reduced, and the amount of time-hardening filler filled in this space can be suspended in a small amount. In addition, the bending stress applied to the closing member is reduced, thereby preventing damage to the closing member and reducing costs.

Dog 1J Hereinafter, explanation will be given using the fruit example shown in FIGS. 1 to 3.

In the figure, reference numeral 1 indicates a steel pipe 2 and 2 installed in the sea along the knee shore to strengthen the seawall, with a strip extending 111 in the longitudinal direction of a pipe with a smaller diameter than the steel pipe 2. This is a steel pipe sheet pile built J714 by closing with 1a\ material 3 that fits into each other via groove 4, and the M side curved surface of joint +43 of this steel pipe sheet pile 1 (in the figure, the sea side is shown on the lower side), which will be described later. A sealing bottom plate 5 is laid on the seabed surrounded by the anti-corrosion coating member 6 and the closing plate 12.

Further, on the sea side of the steel pipe 2, a coating anti-corrosion member 6 made of hard rubber or glass fiber reinforced resin coating material and having an arc-shaped cross section and a predetermined dimension in the longitudinal direction is installed on the arc-shaped inner surface. , the shape is cut in two places on the inner side of both ends! One side of the single bracket 7 is coated with anti-corrosion member 6
It is fixedly formed integrally with and oriented in the vertical direction. In other words, both ends of the 'F&M anti-corrosion member 6 form a free end beyond the bracket 7 and extend to the vicinity of the joint member 3.

Roughly speaking, bifurcated outer claws 9 and inner claws 10 are preferably provided on both edges of the coated anti-corrosion member 6, extending toward the edge from the proximal end near the inner side of the edge. A locking part 8 with an opening angle θ of 10° to 50° is formed and the inner claw 10 is formed to have a shorter width than the outer claw 9. In addition, when both ends of the closing plate 12 (to be described later) fit into the locking part 8 and the mortar material 15 is filled, both ends of the closing plate 12 can easily fit into the locking part 8. J: Sea urchin or mortar material 15 is formed so as to be able to flow into the deep part of the bifurcated locking part 8.

Therefore, in order to attach the coated anti-corrosion member 6 to the steel pipe 2, the tip of the other side of the try side positioning racket 7 of the steel pipe 2 is abutted and fixed to the 111 pipe 2 by welding, Each steel pipe 2
, 2... are coated.

Furthermore, a sealing backing material 11 attached to the inner surface of the outer claw 9 is provided at the locking portion 8 between the edges of the coated anti-corrosion member 6.
(made of rubber) through the closing plate 12 (for example, made of hard rubber,
Or glass fiber reinforced resin coating) vertically oriented 1■
Then, the sea-side front part of the joint member 3 is closed. The conclusion,
A space 13 having a relatively small volume is formed at the front surface of the steel pipe sheet pile 1 surrounded by the extending portion of the anticorrosive coating member 6 and the face blocking plate 12 .

Further, mortar material 15 is injected and solidified into the gap 14 formed between the steel pipe sheet pile 1 and the anti-corrosion coating member 6 and the space 13 formed between the steel pipe sheet pile 1, the anti-corrosion coating member 6 and the closing plate 12. At the same time, the closing plate 12 is pressed against the locking part 8 by the mortar material 15 and is firmly engaged 1, and the steel pipe sheet pile 1 is protected by the mortar material 15. Ru.

In the embodiment shown in FIGS. 1 to 3, the above-mentioned J: sea urchin (J11) is formed, so that it is no longer necessary to remove the parts that are applied in the induction process, and there is no need for a joining means. Member 6 and r+1'l: The plate 12 allows the steel pipe sheet pile 1 to be seeded quickly and effectively, and this bracket 7 is attached to the bracket 7 that supports the coated anti-corrosion member 6 provided on the sea side of the steel pipe 2. The movable coated anti-corrosion part 4jJ6 is provided with an extending edge, and a vertically oriented closing plate 12 is fitted between the bifurcated locking parts 8 provided on this edge. Since it is closed, the space 13 in the front part of the steel pipe sheet pile 1 surrounded by the extended part of the coated anti-corrosion member 6 and the closing plate 12 can be formed into a relatively small volume. Or, even if there is a 'shift' or dimensional error in the vertical direction, both edges of the closing plate 12 can be fitted into the locking parts 8 at the edges of the movable coated anti-corrosion member 6, so it is not affected by the installation error. Coating anti-corrosion members can be carried out easily.

Furthermore, in this embodiment, by filling the space 13 and the gap 14 surrounded by the steel pipe sheet pile 1, the anti-corrosion coating member 6, and the closing plate 12 with mortar material 15, the steel pipe sheet pile 1 can be protected from seawater. , and since the space 13 is formed to have a smaller volume than the volume formed by the recess formed by the pair of angles fixed to the bracket, only a small amount of mortar material 15 can be filled, and there is no need for bolts or nuts or the bracket. It is possible to change the shape of the blockage plate 12 and reduce costs, and the slack of the blockage plate 12 due to the mortar material 15 can be absorbed by following the free ◇i: near the edge of the coating anti-corrosion member 6. Damage caused by applied bending stress can be prevented.

FIG. 4 shows a locking part 20 that is a modification of the embodiment of the locking part 8 shown in FIG.

In FIG. 4, among the components of the actual flow example shown in FIG. 3, the same components as those in the above-described embodiment are designated by the same reference numerals.

In the embodiment of the locking part 8 shown in FIG. 3, the outer claws 9 and the inner claws 10 of the bifurcated locking part 8 are each formed into a flat plate shape, whereas the embodiment shown in FIG. In example m, similarly to the locking part 8, among the outer claws 21 and the inner claws 22 of the bifurcated locking part 20, cut-off stepped portions of a predetermined shape are provided at predetermined intervals in the vertical direction of the inner claw 22. 23 is provided, the same function and effect as the embodiment shown in FIG. When the space 13 formed by the R11 blocking plate 12 to be closed is filled with mortar material 15, the mortar material 15 is formed so that it can be easily filled up to the apex of the locking part 20 through the cut-off step part 23. It is something.

In the embodiment shown in FIGS. 1 to 3, the mortar material 15 is filled in the gap 14 between the steel pipe 2 and the anticorrosive coating member 6, but this mortar material 15 is prevented from flowing outward from the lower part. Therefore, mortar 0 is applied to the lower part of the coated anticorrosive member 6 in advance
Preferably, 15 outflow prevention means are provided.

As described above, in the present invention, the bracket attached to the steel pipe is installed in order to vertically cover the sea side of the steel pipe laid adjacent to the steel pipe and the steel pipe sheet pile serving as the joint. A corrosion-resistant cover panel is attached to the steel pipe sheet pile, an auxiliary cover is provided between the brackets facing each other at the IYI joint, and a filler is filled in the recess between the steel pipe sheet pile, the corrosion-resistant cover panel, and the auxiliary cover. In the anti-corrosion structure, the coated anti-corrosion member is attached to the bracket supporting the ITf anti-corrosion member installed on the sea side of the steel pipe beyond the bracket,
A bifurcated locking portion is formed on the longitudinally oriented end edge of the 'Ii covering corrosion protection member, and both of the vertically oriented closing member +
iris Pipe Sheet Pile and Coated Anticorrosive Member J3 J: By filling the space created by the blockage member with a time-hardening filler, the attachment and joining means for parts constructed under the sea can be avoided, and the coated anticorrosive member The coating can be easily and effectively covered by the anti-corrosion member and the closing member, and the product 71 can be sufficiently controlled by manufacturing the covering anti-corrosion member and the closing member in a factory, so that the mechanical strength and anti-corrosion effect can be further enhanced. I can do it.

In addition, in the present invention, since the anti-corrosion coating member is attached to the bracket that supports the anti-corrosion coating member provided on the sea side of the steel pipe beyond the bracket, the movement of the anti-corrosion member near this edge is prevented. Since both ends of the vertically oriented closing member were fitted between the bifurcated engagement parts of the longitudinally oriented end edges of the coated anti-corrosion member, the steel pipe installed in 1-1 Even if there is a ``shift'' in the front, back, left, right, or vertical direction, the inconvenience of covering anti-corrosion work is eliminated, and the slack of the closing member can be absorbed by the white mountain frame near the edge of the covering anti-corrosion member, reducing the chance of damage caused to the closing member. can be prevented.

Roughly speaking, in the present invention, the edge of the coated anti-corrosion member is covered with a bracket i.
Since it is attached more than 100 degrees, the width of the closing member that fits into the locking part between the edges of the coated anti-corrosion member can be shortened, and the width of the closing member that fits into the locking part between the edges of the steel pipe sheet pile, the coated anti-corrosion member and l! The space formed by the 112I' member can also be made small in volume, and the time-hardening filler filled in this space can be filled with time, thereby effectively protecting the steel pipe sheet pile from seawater. r4
The bending stress applied to the closing member is also reduced, preventing damage to the closing member and reducing costs.

[Brief explanation of drawings]

FIG. 1 is a cross-sectional view showing the coating anti-corrosion structure for steel pipe sheet piles according to the present invention, FIG. 2 is an enlarged cross-sectional view of the main part thereof, FIG. 3 is a perspective view partially showing the locking part of the anti-corrosion member, and FIG. 4 is a perspective view showing another modified example of the coated anti-corrosion member corresponding to FIG. 3;
7 through 7 are cross-sectional views showing the conventional corrosion protection structure for W4 pipes. 1... Steel pipe sheet pile, 2... Steel pipe, 3... Joint material, 4
...Groove, 5...Bottom plate, 6...Coated anti-corrosion member, 7
... To bracket 1, 8... Part J1, 9... Outer claw, 10... Inner claw, 11... Para-Young material, 12.
...Closure plate, 13... Space part, 14... Gap part, 1
5... Mortar material, 20... Locking part, 21... Outer claw, 22... Inner claw, 23... Cutting step part.

Claims (1)

[Claims] In order to vertically cover the sea side of steel pipe sheet piles consisting of steel pipes and joints laid adjacent to each other, a corrosion-proof cover panel is attached to the brackets attached to the steel pipes, and the brackets face each other near the joints. In the anti-corrosion structure of the steel pipe sheet pile, in which an auxiliary cover is provided between the steel pipe sheet piles, the anti-corrosion cover panel and the auxiliary cover, a filler is filled in the recess between the steel pipe sheet piles and the anti-corrosion cover panel, and the anti-corrosion member provided on the sea side of the steel pipes is supported. The coated anti-corrosion member is attached to the bracket beyond the bracket, a bifurcated locking portion is formed on the longitudinally oriented edge of the coated anti-corrosion member, and a locking portion is formed between the edges of the coated anti-corrosion member. Both ends of a vertically oriented closing member are fitted into the locking portions of the steel pipe sheet pile, and a space between the steel pipe sheet pile, the anti-corrosion coating member and the closing member is filled with a time-hardening filler. Coated anti-corrosion structure.