JP6860301B2 - Steel sheet pile repair method and structure, and filler leakage prevention member used in the repair method - Google Patents

Description

The present invention belongs to the technical field of repairing existing (existing) steel sheet piles, which are mainly used as revetments for waterways used in agricultural irrigation facilities.

As part of the postwar irrigation and drainage project, irrigation canals and drainage canals (hereinafter referred to as waterways) leading to rivers around the agricultural land were constructed. Many of the waterways for agricultural work are formed by continuously placing steel sheet piles on both sides due to their good workability and economy, but most of them are still to be properly repaired. The reality is that it is being used without any problems.
However, many steel sheet piles used as revetments for waterways have been aging for decades since their construction, and due to corrosion of steel materials (especially corrosion of tidal zones), steel sheet piles and eventually revetments There is concern that the strength and rigidity of the steel will decrease.
Therefore, in recent years, a technique has been proposed for reliably preventing corrosion of this aged existing steel sheet pile by appropriately repairing it and extending the life of waterway facilities and the like (see, for example, Patent Document 1). ..

Patent Document 1 discloses a method of repairing a steel sheet pile through the following steps.
A step of fixing the connecting plate (11) to the anchor nut (3) of the remaining formwork (1) with bolts (4).
A step of installing the remaining formwork (1) at a position facing the existing steel sheet pile (20) at a predetermined distance.
The base end of the connecting member (12) on which the screw (12a) is engraved is screwed into the fastener (11b) of the connecting plate (11), and the screwing amount is adjusted to adjust the screwing amount of the connecting member (12). A process of adjusting the length dimension (M).
A step of welding and fixing the tip of the connecting member (12) to the steel sheet pile (20).
The next residual formwork (1) is placed at a position adjacent to the previously installed residual formwork (1) in the lateral direction or the height direction, and the next residual formwork (1) is moved to obtain the above. A step of sandwiching the bolt (4) of the next remaining mold (1) in the notch (11d) of the connecting plate (11) fixed to the remaining mold (1).
A step of fastening sandwiched bolts (4) and connecting adjacent two remaining formwork (1) to construct a connecting wall (17).
A step of filling and solidifying concrete or mortar (22) between the steel sheet pile (20) and the connecting wall (17) (see claim 9 of Patent Document 1 above).

According to the repair method according to Patent Document 1, since the residual formwork arranged in front of the steel sheet pile serves as an exterior material, corrosion of the steel sheet pile can be prevented, and the waterway facility and the revetment on which the steel sheet pile is laid can be prevented. A statement that the life of the retaining wall can be extended is recognized (see paragraph [0042] of Patent Document 1).

Japanese Unexamined Patent Publication No. 2014-21168

However, the repair method according to Patent Document 1 has the following problems in terms of workability and economy.
(1) The work of connecting a large number of remaining formwork in the vertical and horizontal directions via the connecting plate must be performed one by one at the site, which is very troublesome.
(2) It is necessary to adjust the screwing amount of each of the connecting members arranged at the four corners of the remaining form to adjust the length and dimension, which is very troublesome in addition to the large number of members. This problem becomes more apparent as the number of remaining formwork increases. Moreover, this length dimension adjustment work is performed when the outer surface of the steel sheet pile is deformed by falling (forward tilting) due to the earth pressure action of the ground on the back side, or by design, it is curved along the revetment extension direction ( It is particularly troublesome when it is curved), and there may be situations where it cannot be handled (cannot be followed).
(3) After adjusting the length and dimension of the connecting member, the work of welding and fixing the tip of each connecting member to the steel sheet pile is also added, so that the construction period is remarkably prolonged and the cost is increased. Moreover, in this welding and fixing work, the pitch of the existing steel sheet pile and the remaining formwork is usually not uniform, so it is necessary to weld and fix the tip of the connecting member on the inclined web of the unstable steel sheet pile depending on the repaired part. There is also a problem that the construction period becomes longer and the cost increases in order to carry out high-quality repairs, such as requiring skilled workers.

The present invention has been devised in view of the above-mentioned problems of the background technology, and the purpose of the present invention is to drastically reduce the number of members and the work process to dramatically improve the work efficiency, and further, the steel sheet pile. A steel sheet pile repair method that is excellent in reliability and quality (reliability) as well as workability and economy, which can be easily followed and repaired even when the revetment is curved along the extension direction of the revetment. The purpose of the present invention is to provide a repair structure and a filler leakage prevention member used in the repair method.

As a means for solving the above problems, in the steel sheet pile repair method according to the invention according to claim 1, a hooked rail extending in the lateral direction is provided on the existing steel sheet pile, and the hooked rails mesh with each other. A metal corrugated lightweight panel material such as a keystone plate provided with a possible hook rail or a hook member is faced with an existing steel sheet pile by hooking the hook rail or the hook member to the hooked rail. placed, thereafter, the arc formed by filling and curing the filling material such as concrete in the space and the metallic waveform lightweight panels of the keystone plate such as the existing sheet piles to form,
The existing steel sheet pile is provided with a cap concrete block above the cap concrete block, and when the filler is filled through the filling hole drilled in the cap concrete block, the metal corrugated shape of the keystone plate or the like is preceded by the filling work. A closing plate is provided at the upper end of the lightweight panel material to abut the lower surface of the cap concrete block and close the gap formed between the panel material and the cap concrete block, and the closing plate is placed at the upper end of the panel material. A horizontal Z-shaped metal fitting consisting of a web portion that is horizontally placed and longer than the wave height of the panel material and upper and lower flange portions that extend in opposite directions from both ends of the web portion, and the Z-shaped metal fitting at the upper end of the panel material. It is characterized in that the lower flange portion extending downward and the upper end portion of the panel material are joined with the web portion of the above mounted.

The method for repairing a steel sheet pile according to the invention according to claim 2 is made of a metal such as a keystone plate in which a hooking member is provided on the existing steel sheet pile and a hooking rail is provided so that the hooking member can be meshed with each other. The corrugated lightweight panel material is arranged so as to face the existing steel sheet pile by hooking the hooking rail to the hooked member, and then the existing steel sheet pile and the metal corrugated lightweight panel such as the keystone plate. and this made by filling and curing the filling material such as concrete in a space and wood forms,
The existing steel sheet pile is provided with a cap concrete block above the cap concrete block, and when the filler is filled through the filling hole drilled in the cap concrete block, the metal corrugated shape of the keystone plate or the like is preceded by the filling work. A closing plate is provided at the upper end of the lightweight panel material to abut the lower surface of the cap concrete block and close the gap formed between the panel material and the cap concrete block, and the closing plate is placed at the upper end of the panel material. A horizontal Z-shaped metal fitting consisting of a web portion that is horizontally placed and longer than the wave height of the panel material and upper and lower flange portions that extend in opposite directions from both ends of the web portion, and the Z-shaped metal fitting at the upper end of the panel material. It is characterized in that the lower flange portion extending downward and the upper end portion of the panel material are joined with the web portion of the above mounted.
The invention according to claim 3 is the method for repairing a steel sheet pile according to claim 1 or 2, wherein the metal corrugated lightweight panel material such as the keystone plate has a metal corrugated shape such as the keystone plate adjacent in the lateral direction. It is characterized in that lightweight panel materials are partially wrapped and connected.

The steel sheet pile repair method according to the invention according to claim 4 is the steel sheet pile repair method according to any one of claims 1 to 3, wherein the keystone plate precedes the filling work of the filler. It is characterized in that a hole for confirming the filling state is provided at a corresponding position of a portion of a metal corrugated lightweight panel material such as a metal corrugated lightweight panel material where filling failure is likely to occur, and the hole is closed after the filling is confirmed.

The steel sheet pile repair method according to the invention according to claim 5 is the steel sheet pile repair method according to any one of claims 1 to 4 , wherein the existing steel sheet pile in the repair area has an existing drain hole. When provided
Prior to the filling work of the filler, a through hole is formed in a portion of the metal corrugated lightweight panel material such as the keystone plate corresponding to the drain hole, and the through hole communicates with the drain hole. It is characterized in that the pipe material connected as described above is penetrated and protrudes outward of a metal corrugated lightweight panel material such as the keystone plate.

The steel sheet pile repair method according to the invention according to claim 6 is the same as the steel sheet pile repair method according to claim 5.
From a flat plate portion having a pipe through hole and a protruding portion higher than the wave height of a metal corrugated lightweight panel material such as the keystone plate that rises from the flat plate portion so as to surround the pipe through hole and is fitted into the through hole. With the protruding portion of the filler leak-preventing member fitted into the through hole, the flat plate portion is brought into contact with the outer surface of a metal corrugated lightweight panel material such as the keystone plate to be joined. It is characterized in that a pipe material connected so as to communicate with the drainage hole is passed through the pipe through hole of the flat plate portion and protrudes to the outside of a metal corrugated lightweight panel material such as the keystone plate. ..
Filler leakage preventing member according to the invention described in claim 7 is the filler leakage preventing member used in repairing method of the steel sheet pile with metal waveform lightweight panel material, such as a key piston plate,
A flat plate portion provided with a pipe through hole, and the metal corrugated lightweight panel that rises from the flat plate portion so as to surround the pipe through hole and is fitted into a through hole formed in a metal corrugated lightweight panel material such as the keystone plate. It is characterized by having a protrusion higher than the wave height of the material.

The repair structure for the steel sheet pile according to the invention according to claim 8 is that the existing steel sheet pile is provided with a hooked rail in the lateral direction.
A metal corrugated lightweight panel material such as a keystone plate provided with a hook rail or a hook member that can be meshed with the hook rail is engaged with the hook rail or the hook member and the hook rail. Being placed face-to-face with the existing steel sheet pile in the combined state,
And this filling material such as concrete is filled between the metal waveform lightweight panels of the keystone plate such as the face placed existing steel sheet pile,
The existing steel sheet pile is provided with a cap concrete block on the upper portion thereof, and the panel material and the cap concrete block come into contact with the upper end portion of a metal corrugated lightweight panel material such as the keystone plate and abut on the lower surface of the cap concrete block. An obstruction plate is provided to close the gap to be formed, and the obstruction plate is placed horizontally on the upper end of the panel material and has a web portion longer than the wave height of the panel material and upper and lower web portions extending in opposite directions from both ends of the web portion. It is a horizontal Z-shaped metal fitting consisting of a flange portion, and with the web portion of the Z-shaped metal fitting placed on the upper end of the panel material, the lower flange portion extending downward and the upper end portion of the panel material are joined. It is characterized by being.

The repair structure of the steel sheet pile according to the invention according to claim 9 is that the existing steel sheet pile is provided with a hooking member.
The existing steel in a state where a metal corrugated lightweight panel material such as a keystone plate provided with a hook rail that can mesh with the hook member is engaged with the hook rail and the hook member. Being placed face-to-face with the sheet pile,
And this filling material such as concrete is filled between the metal waveform lightweight panels of the keystone plate such as the face placed existing steel sheet pile,
The existing steel sheet pile is provided with a cap concrete block on the upper portion thereof, and the panel material and the cap concrete block come into contact with the upper end portion of a metal corrugated lightweight panel material such as the keystone plate and abut on the lower surface of the cap concrete block. An obstruction plate is provided to close the gap to be formed, and the obstruction plate is placed horizontally on the upper end of the panel material and has a web portion longer than the wave height of the panel material and upper and lower web portions extending in opposite directions from both ends of the web portion. It is a horizontal Z-shaped metal fitting consisting of a flange portion, and with the web portion of the Z-shaped metal fitting placed on the upper end of the panel material, the lower flange portion extending downward and the upper end portion of the panel material are joined. It is characterized by being.

The steel sheet pile repair structure according to the invention according to claim 10 is the steel sheet pile repair structure according to claim 8 or 9 , wherein the existing steel sheet pile in the repair area has a hooked rail and a hooked member. Is used in combination, and / or a hooking rail and a hooking member are used in combination with the panel material.

The steel sheet pile repair structure according to the invention according to claim 11 is the steel sheet pile repair structure according to claim 8 , wherein the hooked rail forms a groove in a state of being provided on the existing steel sheet pile. It is characterized by being a steel material such as shaped steel, H-shaped steel, and Z-shaped steel.

The steel sheet pile repair structure according to the invention according to claim 12 is the steel sheet pile repair structure according to claim 8 or 9 , wherein the hooking rail meshes with the hooked rail or the hooked member. It is characterized by being a possible steel material such as C-shaped steel, H-shaped steel, and Z-shaped steel.

The steel sheet pile repair structure according to the invention according to claim 13 is the steel sheet pile repair structure according to claim 8 , wherein the hooking member has a substantially C-shaped cross section that can mesh with the hooked rail. It is characterized in that it is a steel material having a substantially H-shaped cross section or a substantially Z-shaped cross section.
The steel sheet pile repair structure according to the invention according to claim 14 is the steel sheet pile repair structure according to claim 9 , wherein the hooked member has a cross section forming a groove while being provided on the existing steel sheet pile. It is characterized by being a steel material having a substantially C-shape, a substantially H-shaped cross section, or a substantially Z-shaped cross section.

According to the repair method and structure of the steel sheet pile according to the present invention and the filler leakage prevention member used in the repair method, the following effects are obtained.
(1) The number of members is small, such as the hooked rail 2, the hooking rail 3, and the panel material 4 are sufficient as the main constituent members of the repair structure. Along with this, the repair method can be realized by providing a hooked rail 2 on the steel sheet pile 1, hooking the keystone plate 4a and the unitized hooking rail 3 in sequence, and then filling the concrete sheet 5. In addition to the small number of work processes, there is no complicated work such as dimensional adjustment work on site. Therefore, it is very economical and easy to install.
In addition, the gap between the panel material 4 and the cap concrete block 14 is closed to give the viewer a sophisticated, simple and neat impression, and a unified design can be realized for the entire revetment, resulting in excellent landscape. It is possible to provide a repair structure for a steel sheet pile.
(2) Welding work is only the first time that the hooked rail 2 is provided on the steel sheet pile 1, and the rest is mechanical work such as rivet 6 fastening. Reasonable construction can be performed.
(3) Not only can it be applied to a flat existing steel sheet pile 1 (see FIG. 1 etc.) that is not deformed, but also when the outer surface of the steel sheet pile 1 is deformed due to the earth pressure action of the ground on the back side. Also, when the steel sheet pile 11 is curved along the extension direction of the shore (see FIG. 4), it can be easily and surely dealt with (see paragraphs [0038] and [0039] for details). Regardless of the form of the steel sheet pile 1, it is possible to realize a repair method and a repair structure for the steel sheet pile having excellent quality (reliability).
(4) According to the invention of claim 4, by providing the hole 7 for confirming the filling state, the worker can visually confirm the filling state of the filler 5, so that a higher quality steel sheet pile repair structure can be obtained. Can be provided. The hole 7 can drilling a drill used for the rivet 6 fastening work, also, since it closed by rivets 6, Ru mower advantage that can be performed easily and efficiently.
According to the invention of請Motomeko 5-7, since the existing sheet piles may perform continued to weep without impairing the function of the drain having before repair, repair structure excellent steel sheet pile in functional Can be provided.
(5) In summary, the number of members and work process can be significantly reduced to dramatically improve work efficiency, and even if the steel sheet pile is curved along the revetment extension direction, it can be easily followed and repaired. For existing steel sheet piles that have deteriorated by realizing a steel sheet pile repair method and repair structure that are excellent in reliability, quality (reliability), landscape, and functionality as well as workability and economy. , Corrosion can be reliably prevented, and the life of waterway facilities can be extended.

It is a perspective view which showed the main part of the repair structure of the steel sheet pile which concerns on this invention. The joint between the hooked rail and the hooked rail is shown by breaking the right side of the concrete. The existing cap concrete block and the ground on the back side of the steel sheet pile are omitted for convenience of illustration. A is a perspective view showing the hooked state of the steel sheet pile and the panel material, B is the same plan view, and C is the same front view. For convenience of illustration, concrete is omitted. Further, following FIG. 1, the existing cap concrete block and the ground on the back side of the steel sheet pile are omitted for convenience of illustration. A is a side view showing a state in which a hook rail is attached to one panel material (keystone plate) used for a repair structure of a steel sheet pile to form a unit, B is a front view of the same, and C is a front view. It is a plan view of B. A is a perspective view showing a variation of the repair structure of the steel sheet pile, and B is a plan view of the same. A to H are front views showing variations of the hooked state (hooked rail and hooked rail) between the steel sheet pile and the panel material. It is a top view which showed the further variation of the repair structure of a steel sheet pile. It is a top view which showed the further variation of the repair structure of a steel sheet pile. A is a perspective view showing variations of the panel material, and B is a front view showing a repair structure of a steel sheet pile constructed by using the panel material shown in A. A is a perspective view showing a filler leakage prevention member dedicated to a metal corrugated lightweight panel material, B is a perspective view showing a rectangular through hole in the panel material, and C is a through hole. It is a perspective view which shows the state which the filler leakage prevention member is attached to, and D is the back perspective view of the same. A to C are plan views showing typical examples of steel sheet piles.

Next, an example of the repair method and the repair structure of the steel sheet pile according to the present invention and the filler leakage prevention member used in the repair method will be described with reference to the drawings.
[Reference example]

In the steel sheet pile repair structure 10 according to the present invention, as shown in FIGS. 1 and 2, the hooked rail 2 is provided in the lateral direction on the existing steel sheet pile 1.
A panel material 4 provided with a hook rail 3 that can be meshed with the hook rail 2 is attached to the existing steel sheet pile 1 in a state where the hook rail 3 and the hook rail 2 are engaged with each other. It is arranged face-to-face.
A filler such as concrete 5 is filled between the existing steel sheet pile 1 (hereinafter, appropriately abbreviated as steel sheet pile 1) and the panel material 4 arranged facing each other.
Incidentally, the height of the panel material 4 according to this reference example is set lower than the height of the steel sheet pile 1 so that FIG. 2C can be easily understood. This is because the repair of the steel sheet pile 1 usually needs to be higher than the upper surface of the tidal zone where corrosion is concentrated.

Representative embodiments of the steel sheet pile 1, execution subject of the present invention is shown in FIG. 10 A through C, the present invention is not limited to the type of steel sheet pile shown in Figure 10 A through C, fixing the HiKaketome rail 2 This can be done for all steel sheet piles with a possible anchoring surface X. Incidentally As an example, repair structure according to FIG. 1, FIG. 10 is A type of execution subject steel sheet piles, repair structure according to FIG. 4 to be described later is in the FIG. 10 B type sheet piles as in the subject.

Channel steel is used for the hooked rail 2 according to this reference example, which is positioned in the horizontal direction (horizontal direction) with respect to the steel sheet pile 1 and integrated with the steel sheet pile 1 by a joining means such as welding. ing.
The hooked rail 2 is implemented by setting the opening of the channel steel upward and adding it at key points to form a series of groove-shaped rails.
As the hooked rail 2, a 40 × 20 × 2.3 (mm) SS400 is used as an example, but the design can be appropriately changed according to the structural design.
Further, the hooked rail 2 is implemented in a three-stage configuration with a predetermined interval in the vertical direction, but the hooked rail 2 and the hooked rail 3 are appropriately arranged according to the member rigidity, the repair area, and the like. The design can be changed. Incidentally, in this reference example, the lowermost rail 2 is fixed at a portion 300 mm from the lower end of the steel sheet pile 1, and the rails 2 and 2 are fixed at a distance of 700 mm.
In this reference example, the lowermost rail 2 is set at a portion 300 mm from the lower end of the steel sheet pile 1, if it is separated by about 400 mm, although it depends on the filling procedure (casting procedure) of the concrete 5, the concrete 5 This is to prevent the lower end portion of the panel material 4 from being deformed due to the filling pressure (casting pressure) of the panel material 4.

On the other hand, the hook rail 3 according to this reference example uses a channel steel paired with the hooked rail 2, which is positioned horizontally with respect to the panel material 4 and the panel material 4 and the rivet 6 are used. It is integrated by fixing means such as fastening and screw fastening.
The hook rail 3 is made of a steel material having the same cross-sectional shape as the hooked rail 2 in consideration of economy and rationality, and the opening is set downward so as to mesh with the hooked rail 2. It is carried out by adding at key points to form a series of groove-shaped rails.
The hook rail 3 is implemented in a three-stage configuration corresponding to the hooked rail 2, but of course, the design is appropriately changed according to the arrangement and quantity of the hooked rail 2.

As the panel material 4 according to this reference example, a metal corrugated lightweight panel material 4a called a keystone plate is preferably used. This keystone plate 4a has the advantages of being mass-produced, having a low member unit price, being lightweight, and having good workability.
As an example, the keystone plate 4a according to this reference example has a height of 2000 mm, a width of 650 mm, an effective width of 630 mm, a wave height of 25 mm, and a plate thickness of 1.0 mm, which has rigidity enough not to be deformed with respect to the filling pressure of the concrete 5. Commercially available products are used. The keystone plate 4a can be formed into a panel material 4 having a required size by a method of partially wrapping the keystone plate 4a in the revetment extension direction according to the repaired portion and connecting the keystone plates 4a with rivets 6.
By the way, in this reference example, the hook rail 3 having a width dimension of 600 mm, which is narrower (shorter) than the width dimension of the keystone plate 4a to be used, is previously mounted in the vertical direction of one commercially available keystone plate 4a. The required number of units are prepared by fixing them with 6 rivets in a three-stage structure at equal intervals with the rail 2 to improve work efficiency (see FIG. 3).

Reference numeral 7 in FIG. 3B indicates a hole for confirming the filling state, and the action and effect of the hole 7 will be described in paragraph [0035].
In this reference example, a commercially available keystone plate 4a is used, but the commercially available keystone plate 4a has a variation of 1000 to 4000 mm in height, and can be flexibly adapted according to the repair area of the steel sheet pile 1. Can be done. For example, when the height of the repaired part (for example, the upper surface of the ebb and flow zone) is high, various sizes may be added as appropriate according to the height, and conversely, when the height is low, a keystone plate with a height of 1000 mm may be used. Alternatively, a device for adjusting by cutting is being made as appropriate.

As the filler to be filled in the space formed by the steel sheet pile 1 and the panel material 4, concrete 5 is used in this reference example, but a solidifying material such as mortar can also be used in the same manner.

Next, a repair method for realizing the repair structure of the steel sheet pile will be described.
First, as a preparatory step to start this repair method, water cutting work, high-pressure washing work, etc. are performed as necessary.
When the preparation is completed, a positioning operation is performed to join the hooked rail 2 extending in the lateral direction to the existing steel sheet pile 1 by welding (or other joining means) to the predetermined portion. This positioning work is repeated over the repair area (repair site) until the hooked rails 2 are appropriately added and provided in a series, and the required number of steps ( 3 steps in this reference example) are joined.
Around the same time as or at the same time as the positioning work, leveling work such as crushing stones on the installation site of the panel material 4 and laying bottom slab concrete (not shown) is also performed.

Next, the panel material 4 is arranged so as to face the existing steel sheet pile 1 by engaging the hooking rail 3 with the hooked rail 2 and hooking the panel material 4. In this reference example, as described above, a unit in which the hooking rail 3 and the keystone plate 4a are integrated in advance is used (see FIG. 3), and the hooking rail 3 of the unit is hooked on the hooked rail 2. By repeating the work in the lateral direction according to the number of units, the steel sheet pile 1 in the repair area is arranged face-to-face. Then, the panel material 4 is formed by repeating the work of partially wrapping the adjacent keystone plates 4a and 4a and connecting them with the rivets 6 while keeping the hooked state. Since the size of one keystone plate 4a applicable to this embodiment is as wide as 650 mm in width and 1000 to 4000 mm in height, it is possible to quickly cover the entire surface of the steel sheet pile 1 in the repair area with a simple hooking operation. it can.
Thus, the panel material 4 covers the hook rail 3 without applying the load of the panel material 4 itself to the steel sheet pile 1 while maintaining a stable posture in which the panel material 4 stands upright on the upper surface of the bottom plate concrete. A configuration is realized in which the rails 2 are simply hooked to each other and are continuous without gaps along the extension direction of the revetment.

After that, by installing a formwork (not shown) that closes the gap formed between both ends of the panel material 4 and the steel sheet pile 1 in the repair area, the front, rear, left and right side surface portions are made of steel sheet pile. 1 is closed by the panel material 4 and the left and right formwork, and the bottom surface is filled (cast) with concrete 5 from above in the space closed by the bottom slab concrete, and the space is filled with concrete 5 (usually). After filling), it is cured, and a repair structure for steel sheet piles is constructed.
The filling operation of the concrete 5 is performed while appropriately adjusting the filling amount and filling speed so that the lower end portion of the panel material 4 is deformed by the filling pressure and the concrete 5 is prevented from leaking and the unfilled portion is not provided.

As a device for not providing the unfilled portion, in this reference example, the hole 7 for confirming the filling state is bored at a key point of the panel material 4 (keystone plate 4a). That is, prior to the filling operation of the filling material 5, a hole 7 for confirming the filling state is provided at a corresponding position of a portion of the panel material 4 where filling failure is likely to occur. When the operator visually confirms that the filler 5 has leaked from the hole 7, it can be seen that the filler 5 is surely filled even in the portion where the filling defect is likely to occur. The hole 7 is drilled by a drill or the like used for fastening the rivet 6, and after the worker visually confirms that the filler 5 has been filled, the hole 7 is closed by the rivet 6 or the like.
The hole 7 for confirming the filling state (the part where the filling defect is likely to occur) is an area (particularly the upper part) away from the filling port (filling hose), and the filling material 5 wraps around. It refers to the area directly below the difficult rail material (hanging rail 2, hooking rail 3), or the four corners of the area to be repaired by the panel material 4.
The size of the hole 7 for confirming the filling state is such that the filling status can be confirmed while preventing an increase in concrete outflow, specifically, sand and cement milk can leak (discharge). The gravel is set to a diameter (φ) of 3 to 10 mm, which is likely to cause clogging. In the confirmation test conducted by the applicant, the best results were obtained when the diameter (φ) was 5 mm.
Further, the hole 7 for confirming the filling state may be drilled after the panel material 4 is installed in a face-to-face arrangement with respect to the steel sheet pile 1 in the repair area, or as shown in FIG. 3B, the hole 7 may be drilled in advance. It may be bored in the keystone plate 4a.

Next, the above-mentioned steel sheet pile repair method and variations of the repair structure will be described.

The keystone instead of the plate 4a, Ru can when practicing tabular lightweight panels be through the same steps as repairing method described above to construct the repair of the steel sheet pile.

If the outer surface of the steel sheet pile 1 is deformed by falling (forward tilting) due to the earth pressure action of the ground on the back side, the hooked rail 2 and / or the hooking rail provided on the upper side (top) It can be easily dealt with by setting the width dimension (protruding dimension) of 3 to be shorter than those provided on the lower side.

As shown in FIG. 4, the design, if the steel sheet pile 11 (FIG. 10 B type) is curved (curved) along the seawall extension direction, the site of installation HiKaketome rail 2, the width dimension (displacement Yutaka Degree) or length, installation location of the retaining rail 3, width dimension (displacement margin), length, and connection position between adjacent keystone plates 4a and 4a can be adjusted appropriately based on simulation analysis, etc. Moreover, a repair structure that can reliably follow the curved shape of the steel sheet pile 11 can be realized (see FIG. 4B).

In the reference example according to FIGS. 1 to 4, both the hooked rail 2 and the hooked rail 3 are carried out using channel steel (C-shaped steel) having the same shape and the same size and a U-shaped cross section. As illustrated in FIGS. 5A to 5H, for example, channel steels with lips, Z-shaped steels, deformed channel steels, or H-shaped steels may be appropriately combined and meshed with each other.

In the reference example according to FIGS. 1 to 4, both the hooked rail 2 and the hooked rail 3 are implemented in a rail shape, but the present invention is not limited to this, and FIG. As shown in an embodiment in which a short hooking member 12 is used instead, and in FIG. 7, a short hooking member 13 having an insertion portion is used instead of the hooking rail 3, at least one of them is used. May be in the shape of a rail (see FIGS. 6 and 7 and FIG. 2C for the hooked state). As described above, the panel material 4 is not a structure in which the load of the panel material 4 itself is applied to the steel sheet pile 1, but is implemented in a configuration in which the panel material 4 is simply fastened. Even if it is 13, it can be sufficiently carried out without any problem in terms of strength.
In addition to the illustrated example, the shortened hooking member 12 and the hooking member 13 can be used in combination with the hooked rail 2 and the hooking rail 13, so that the steel sheet pile 11 is curved along the revetment extension direction. There is an advantage that it can be applied particularly effectively when it is (curved).
Further, the hooking member 12 and the hooking member 13 are not limited to the channel steel having a U-shaped cross section, and as described above, the hooking member 12 and the hooking member 13 can mesh with each other with respect to the mating material (the hooked rail 2 and the hooking rail 3). The same can be applied to steel materials having a Z-shaped cross section and an H-shaped cross section. (See with reference to FIG. 5).
[Example 1]

FIG. 8 shows Example 1 of the steel sheet pile repair method according to the present invention. In the steel sheet pile repair method according to the first embodiment, as shown in FIG. 8A, the closing plate (Z-shaped metal fitting) 8 is joined to the upper end of the panel material 4 (keystone plate 4a) as compared with the above reference example. The difference is that they are provided.
In other words, the repair method of the steel sheet pile according to Example 1, the existing steel sheet pile 1 is provided with a bevel concrete block 14 thereon, the filling material 5 through fill hole 15 bored in the bevel concrete block 14 Prior to the filling operation, the closing plate 8 abuts on the lower surface of the cap concrete block 14 at the upper end of the panel material 4 to close the gap formed between the panel material 4 and the cap concrete block 14. As a result, a repair structure that covers the entire surface of the steel sheet pile 1 in the repair area is realized.

Specifically, the panel material 4 is a keystone plate 4a (a metal corrugated lightweight panel material such as), and the closing plate 8 provided at the upper end of the plate 4a is horizontally mounted on the upper end of the plate 4a. A horizontal Z-shaped metal fitting 8 composed of a web portion 8a (for example, 30 mm) longer than the wave height (25 mm) of the above and upper and lower flange portions 8b and 8c extending in opposite directions from both ends of the web portion 8a. With the web portion 8a of the Z-shaped metal fitting 8 placed on the upper end of the plate 4a, the lower flange portion 8c extending downward and the upper end portion of the plate 4a are brought into contact with each other (face touch) to fasten the rivet 6 or the like. Join by the joining means of.

The significance of forming the closed plate 8 in a Z shape is due to the use of the corrugated panel material 4. That is, when the panel material 4 uses a flat plate-shaped lightweight panel material, the closing plate 8 can easily close the gap even if it is a simple flat shape, but when the panel material 4 has a corrugated shape, the concave portion of the corrugated panel material 4 Since the filler 5 leaks (overflows) from the top end of the (valley) to the outside of the panel material 4, the flat type closing plate 8 does not use it. Therefore, it has been decided to adopt the Z-shaped metal fitting 8 having the web portion 8a longer than the wave height that exactly closes the top end of the corrugated panel material 4. Incidentally, the material and color of the Z-shaped metal fitting 8 are the same as those of the panel material 4 used in consideration of landscape as an example.

According to the Z-shaped metal fitting 8, the web portion 8a longer than the wave height of the panel material 4 blocks the leakage of the filler 5 from the recess of the panel material 4, and the upper flange portion 8b is the lower surface of the cap concrete block 14. By setting the length to reach (50 mm in this embodiment), not only the leakage of the filler 5 but also the exposure of the steel sheet pile 1 is prevented, and the lower flange portion 8c is in a good joint state with the panel material 4. By setting the length required to realize it (60 mm in this embodiment), it is possible to realize a joint with excellent strength and rigidity, and even if it is a metal corrugated lightweight panel material such as a keystone plate 4a, it is a flat plate. It is possible to surely realize a closed structure in which the filler 5 similar to the lightweight panel material does not leak out.
Further, by closing the gap formed between the panel material 4 and the cap concrete block 14 with the closing plate (Z-shaped metal fitting) 8, the entire repair area of the existing steel sheet pile 1 is the same as the panel material 4 and the closing plate 8. Since it can be covered with materials and colors, it gives the viewer a sophisticated, simple and neat impression, and it is possible to realize a repair structure of steel sheet piles with a unified feeling throughout the revetment and excellent landscape. ..

The size of the web portion 8a of the Z-shaped metal fitting (blocking plate) 8 is not limited to 30 mm, and the design can be appropriately changed according to the wave height of the corrugated panel material 4 and the horizontal protrusion size of the cap concrete block 14. Is. The size of the upper flange portion 8b is not limited to 50 mm, and the design can be appropriately changed according to the gap formed between the top end of the corrugated panel material 4 and the cap concrete block 14. The size of the lower flange portion 8c is not limited to 60 mm, and the design can be appropriately changed according to the total length (total height) of the corrugated panel material 4 to be used.
Further, the Z-shaped metal fitting (blocking plate) 8 may be provided by joining the panel material 4 to the steel sheet pile 1 in the repair region after installing the panel material 4 in a facing arrangement, or the corrugated panel material 4 (keystone plate 4a) may be provided in advance. ) May be joined and provided. Incidentally, the Z-shaped metal fitting 8 according to the present embodiment is previously joined to the upper end portion of the keystone plate 4a over the effective width (630 mm) of the keystone plate 4a.
[Example 2]

FIG. 9 shows different examples of the steel sheet pile repair method according to the present invention. The steel sheet pile repair method according to the second embodiment is different from the above reference example in that a through hole 4a'is formed in the intermediate portion of the panel material 4 (keystone plate 4a).
That is, the steel sheet pile repair method according to the second embodiment precedes the filling work of the filler 5 when the existing steel sheet pile 1 in the repair area is provided with an existing drain hole (not shown). A through hole 4a'is formed in a portion of the panel material 4 corresponding to the drainage hole, and a pipe material (not shown) connected to the through hole 4a'to communicate with the drainage hole is penetrated. Let it stick out to the outside of the panel material 4. By carrying out with such a configuration, it is possible to continuously drain water without impairing the function of draining the existing steel sheet pile 1 that was possessed before the repair.

When the panel material 4 uses a flat plate-shaped lightweight panel material, water can be continuously drained without any particular ingenuity simply by forming the through hole 4a'. That is, if a closing material such as a conventional general formwork material is applied to the gap formed between the through hole 4a'and the outer peripheral surface of the pipe material and the filling material 5 is cured, the closing material is removed. It is possible to realize a structure in which water can be drained to the outside of the panel material 4 through a pipe material communicating with the drain hole of the existing steel sheet pile 1.
However, when the panel material 4 is a corrugated (metal corrugated lightweight panel material), it is filled from the recesses (valleys) of the corrugated panel material 4 when a closing material such as the conventional general formwork material is applied. It is not possible to prevent the material 5 from leaking to the outside. Therefore, in this embodiment, when the panel material 4 has a corrugated shape, a filler leakage prevention member 9 dedicated to the corrugated panel material 4 is used.

As shown in FIG. 9A, the filler leakage preventing member 9 includes a flat plate portion 9a having a pipe through hole 9a'(as an example in this embodiment, about 30 × 30 cm) and a pipe passing through the flat plate portion 9a. It is composed of a protruding portion 9b (for example, 30 mm) higher than the wave height (25 mm) of the panel material 4 which rises so as to surround the hole 9a'and is fitted into the through hole 4a' without a gap. As shown in D, the flat plate portion 9a is brought into contact with the outer surface of the panel material 4 (surface touch) in a state where the protruding portion 9b is tightly fitted and inserted into the through hole 4a'without a gap, and the rivet 6 is used. Join by joining means such as fastening.

According to the filler leakage prevention member 9, the protrusion 9b higher than the wave height of the panel material 4 can be implemented so as to surely block the leakage of the filler 5 from the recess of the panel material 4 (see FIG. 9D). ), The drainage can be continuously performed without impairing the drainage function of the existing steel sheet pile 1 which was held before the repair, as in the case of the flat plate-shaped lightweight panel material. That is, a closing material such as a conventional general formwork material is applied to the gap formed between the pipe through hole 9a'of the filler leakage prevention member 9 set in the through hole 4a'and the outer peripheral surface of the pipe material. If the closing material is removed after the filler 5 has been cured, water is drained to the outside of the panel material 4 through a pipe material communicating with the drain hole of the existing steel sheet pile 1 in the same manner as the flat plate-shaped lightweight panel material. A structure that can be realized can be realized.

In this embodiment, the through hole 4a'and the protruding portion 9b fitted therein are formed in a rectangular shape, but the present invention is not limited to this, and the same can be performed in a circular shape. The shape of the pipe through hole 9a'formed in the flat plate portion 9a is not limited to a circular shape, and the shape is not limited as long as the pipe material can be penetrated.

Although the examples have been described above based on the drawings, the present invention is not limited to the illustrated examples, and includes a range of design changes and application variations normally performed by those skilled in the art within a range that does not deviate from the technical idea thereof. I will mention it just in case.

1 Existing steel sheet pile 2 Mounted rail 3 Hanging rail 4 Panel material 4a Keystone plate (Metal corrugated lightweight panel material )
4a'Through hole 5 Concrete 6 Rivets
7 Hole for checking the filling status
8 Blocking plate (Z-shaped hardware)
8a Web section
8b Upper flange
8c Lower flange
9 Filler leak prevention member
9a Flat plate
9a'Pipe through hole
9b Protruding part 10 Steel sheet pile repair structure 11 Existing steel sheet pile 12 Hook member 13 Hook member
14 shade concrete block
15 Fill holes

Claims (14)

A metal corrugated lightweight panel material such as a keystone plate provided with a hooking rail extending laterally on an existing steel sheet pile and a hooking rail or a hooking member that can be meshed with each other is hooked on the hooked rail. The stop rail or the hook member is hooked on the hooked rail so as to face the existing steel sheet pile, and then the existing steel sheet pile and the metal corrugated lightweight panel material such as the keystone plate are formed. and this formed by filling and curing the filling material such as concrete in a space that,
The existing steel sheet pile is provided with a cap concrete block above the cap concrete block, and when the filler is filled through the filling hole formed in the cap concrete block, the metal corrugated shape of the keystone plate or the like is preceded by the filling work. A closing plate is provided at the upper end of the lightweight panel material to abut the lower surface of the cap concrete block and close the gap formed between the panel material and the cap concrete block, and the closing plate is placed at the upper end of the panel material. A horizontal Z-shaped metal fitting consisting of a web portion that is horizontally placed and longer than the wave height of the panel material and upper and lower flange portions that extend in opposite directions from both ends of the web portion, and the Z-shaped metal fitting at the upper end of the panel material. A method for repairing a steel sheet pile, which comprises joining a lower flange portion extending downward and an upper end portion of the panel material with the web portion of the above mounted. A metal corrugated lightweight panel material such as a keystone plate provided with a hooking member provided on an existing steel sheet pile and a hooking rail that can be meshed with the hooking member, and the hooking rail is used as the hooking member. The existing steel sheet pile is placed so as to face the existing steel sheet pile, and then a filler such as concrete is filled in the space formed by the existing steel sheet pile and the metal corrugated lightweight panel material such as the keystone plate. and this formed by curing,
The existing steel sheet pile is provided with a cap concrete block above the cap concrete block, and when the filler is filled through the filling hole formed in the cap concrete block, the metal corrugated shape of the keystone plate or the like is preceded by the filling work. A closing plate is provided at the upper end of the lightweight panel material to abut the lower surface of the cap concrete block and close the gap formed between the panel material and the cap concrete block, and the closing plate is placed at the upper end of the panel material. A horizontal Z-shaped metal fitting consisting of a web portion that is horizontally placed and longer than the wave height of the panel material and upper and lower flange portions that extend in opposite directions from both ends of the web portion, and the Z-shaped metal fitting at the upper end of the panel material. A method for repairing a steel sheet pile, which comprises joining a lower flange portion extending downward and an upper end portion of the panel material with the web portion of the above mounted. The first or second aspect of the metal corrugated lightweight panel material such as the keystone plate is characterized in that the metal corrugated lightweight panel materials such as the keystone plate adjacent in the lateral direction are partially wrapped and connected to each other. The described steel sheet pile repair method. Prior to the filling work of the filler, a hole for confirming the filling state is provided at a corresponding position of a portion of the metal corrugated lightweight panel material such as the keystone plate where filling failure is likely to occur, and the hole is confirmed for filling. The method for repairing a steel sheet pile according to any one of claims 1 to 3, wherein the steel sheet pile is closed later. When the existing steel sheet pile in the repair area is provided with an existing drainage hole,
Prior to the filling work of the filler, a through hole is formed in a portion of the metal corrugated lightweight panel material such as the keystone plate corresponding to the drain hole, and the through hole communicates with the drain hole. The steel sheet pile according to any one of claims 1 to 4 , wherein the pipe material connected as described above is penetrated and projected outward from the metal corrugated lightweight panel material such as the keystone plate. Repair method. From a flat plate portion having a pipe through hole and a protruding portion higher than the wave height of a metal corrugated lightweight panel material such as the keystone plate that rises from the flat plate portion so as to surround the pipe through hole and is fitted into the through hole. With the protruding portion of the filler leak-preventing member fitted into the through hole, the flat plate portion is brought into contact with the outer surface of a metal corrugated lightweight panel material such as the keystone plate to be joined, and then joined. It is characterized in that a pipe material connected so as to communicate with the drainage hole is passed through the pipe through hole of the flat plate portion and protrudes to the outside of a metal corrugated lightweight panel material such as the keystone plate. , The method for repairing a steel sheet pile according to claim 5. A filler leakage preventing member used in repairing method of the steel sheet pile with key Stone metal waveform lightweight panel material, such as plate,
A flat plate portion provided with a pipe through hole, and the metal corrugated lightweight panel that rises from the flat plate portion so as to surround the pipe through hole and is fitted into a through hole formed in a metal corrugated lightweight panel material such as the keystone plate. A filler leakage prevention member characterized by having a protruding portion higher than the wave height of the material. The existing steel sheet pile is provided with a rail to be hooked in the lateral direction.
A metal corrugated lightweight panel material such as a keystone plate provided with a hook rail or a hook member that can be meshed with the hook rail is engaged with the hook rail or the hook member and the hook rail. Being placed face-to-face with the existing steel sheet pile in the combined state,
And this filling material such as concrete is filled between the metal waveform lightweight panels of the keystone plate such as the face placed existing steel sheet pile,
The existing steel sheet pile is provided with a cap concrete block on the upper portion thereof, and the panel material and the cap concrete block come into contact with the upper end portion of a metal corrugated lightweight panel material such as the keystone plate and abut on the lower surface of the cap concrete block. An obstruction plate is provided to close the gap to be formed, and the obstruction plate is placed horizontally on the upper end of the panel material and has a web portion longer than the wave height of the panel material and upper and lower web portions extending in opposite directions from both ends of the web portion. It is a horizontal Z-shaped metal fitting consisting of a flange portion, and with the web portion of the Z-shaped metal fitting placed on the upper end of the panel material, the lower flange portion extending downward and the upper end portion of the panel material are joined. The repair structure of the steel sheet pile, which is characterized by the fact that it is. The existing steel sheet pile is provided with a hooking member,
The existing steel in a state where a metal corrugated lightweight panel material such as a keystone plate provided with a hook rail that can mesh with the hook member is engaged with the hook rail and the hook member. Being placed face-to-face with the sheet pile,
And this filling material such as concrete is filled between the metal waveform lightweight panels of the keystone plate such as the face placed existing steel sheet pile,
The existing steel sheet pile is provided with a cap concrete block on the upper portion thereof, and the panel material and the cap concrete block come into contact with the upper end portion of a metal corrugated lightweight panel material such as the keystone plate and abut on the lower surface of the cap concrete block. An obstruction plate is provided to close the gap to be formed, and the obstruction plate is placed horizontally on the upper end of the panel material and has a web portion longer than the wave height of the panel material and upper and lower web portions extending in opposite directions from both ends of the web portion. It is a horizontal Z-shaped metal fitting consisting of a flange portion, and with the web portion of the Z-shaped metal fitting placed on the upper end of the panel material, the lower flange portion extending downward and the upper end portion of the panel material are joined. The repair structure of the steel sheet pile, which is characterized by the fact that it is. The existing steel sheet pile in the repair area is characterized in that a hooking rail and a hooking member are used in combination, and / or the panel material is characterized in that a hooking rail and a hooking member are used in combination. The repair structure for the steel sheet pile according to claim 8 or 9. The steel sheet pile according to claim 8 , wherein the hooked rail is a steel material such as C-shaped steel, H-shaped steel, and Z-shaped steel that forms a groove in a state of being provided on an existing steel sheet pile. Repair structure. The method according to claim 8 or 9 , wherein the hook rail is a steel material such as a C-shaped steel, an H-shaped steel, or a Z-shaped steel that can mesh with the hooked rail or the hooked member. Repair structure of the steel sheet pile. The steel sheet pile according to claim 8 , wherein the hooking member is a steel material having a substantially C-shaped cross section, a substantially H-shaped cross section, or a substantially Z-shaped cross section that can mesh with the rail to be hooked. Repair structure. Wherein the latch member is characterized by a steel, such as a substantially C-shaped, cross section H-shape, or a substantially Z-shape to form a groove in a state provided in existing sheet piles, in claim 9 The repair structure of the steel sheet pile described.

Images