JP6402207B2 - Repair formwork panel, repair formwork system and underwater structure repair method using the same - Google Patents

Description

  The present invention relates to a repair formwork panel for repairing underwater structures such as breakwaters and bridge piers installed in the water of the sea or river, a repair formwork system, and an underwater structure repair method using the same. It is.

  Conventionally, caisson and underwater concrete are often used for underwater structures such as breakwaters and piers installed in water such as the sea and rivers. Further, in a broad sense, a steel box having a structure belonging to the category of the caisson includes an outer wall formed by filling pre-packed concrete in a bowl-shaped steel mold formed by combining steel plate frames, and the steel box. It consists of a bottom plate made by placing underwater concrete in a formwork. Then, after filling the steel box with the filling sand, the underwater structure is completed by placing an upper work.

  As a technique related to the steel box described above, for example, in Japanese Utility Model Laid-Open No. 5-40334, an outer sea side wall and a land side wall are integrally connected with an end wall from the lower bottom part of the steel box main body. On the other hand, a steel shell caisson in which a steel footing is integrally projected is disclosed (Patent Document 1).

Japanese Utility Model Publication No. 5-40334

  However, many underwater structures such as the above-mentioned steel boxes have recently been damaged and have become significantly damaged. In particular, at the portion where the water surface rises and falls, the steel plate is corroded and peeled off, and there is a portion where the internal concrete is exposed and recessed, so that the surface needs to be repaired. However, since many braces are stretched around in the steel box, it is extremely difficult to remove the inner filling sand. For this reason, as a repair method, it is fundamental to repair the outer wall which becomes the surface of the underwater structure without removing the filling sand.

  As a general repair method, there is a method of repeating the process of assembling the steel mold, placing and curing the underwater concrete, and demolding the steel mold to widen the repair surface by about 1.5 m. Mainstream. However, in the construction method, in order to integrate the placed underwater concrete and the underwater structure, it is necessary to uniformly insert a large number of reinforcing bars (so-called differential bars) over the entire repair surface. In addition, since the assembly process, the curing process, and the demolding process described above require a lot of time, there is a problem that the construction period is prolonged.

  In addition, the above construction method has to widen the foundation mound inside the port in order to secure a widening space on the repair surface, and it takes a construction period, so-called floor digging costs, removal of the solid block and covering block, There is also a problem that restoration costs are enormous. Furthermore, in the above construction method, there is also a problem that the reinforcing bars cannot be uniformly inserted and cannot be repaired easily at a location where the strength of the repair surface is insufficient or a location where there is a dent or a hole.

  The present invention has been made to solve such problems, and it is possible to reduce the construction period by excellent workability and to suppress the construction cost, and to repair the underwater structure easily. It is an object of the present invention to provide a formwork panel for repair, a formwork system for repair, and an underwater structure repair method using the same.

  The repair formwork panel according to the present invention repairs an underwater structure in order to solve the problem of shortening the construction period and suppressing the construction cost due to excellent workability and easily repairing the underwater structure. A repair form panel for a dam plate arranged at a predetermined interval from a repair surface of the underwater structure, and a distance between a left and right edge of the dam plate and a repair surface of the underwater structure A pair of side plates projecting in accordance with the bottom plate, and attached to the back surface of the dam plate, and slidable with respect to a guide member attached in a substantially vertical direction along the repair surface of the underwater structure And a guided member to be guided.

  Further, as one aspect of the present invention, in order to solve the problem of retaining the placed underwater concrete without sinking the repair form panel to the lowermost part, the underwater structure is formed from the lower edge of the dam plate. You may have the baseplate provided with the insertion recessed part which makes the said guide member penetrate in the lower end part vicinity of the said to-be-guided member while protrudingly providing according to the space | interval with the repair surface of a thing.

  Furthermore, as one aspect of the present invention, in order to solve the problem of preventing leakage of underwater concrete from the gap between the repair formwork panel and the repair surface of the underwater structure, Prevents leakage of underwater concrete filled between the repair formwork panel and the repair surface of the underwater structure by covering the clearance between the leading edge and the repair surface of the underwater structure A leakage prevention member is provided, and when the bottom plate protrudes from the lower end edge of the barrier plate toward the repair surface of the underwater structure, the leakage also occurs inside the front edge of the bottom plate. A prevention member may be provided.

  In addition, the repair formwork system according to the present invention can reduce the construction period by excellent workability and reduce the construction cost, and any of the above-described problems can be solved by simply repairing the underwater structure. The form panel for repair of the aspect and the guide member.

  Furthermore, the repair formwork system according to the present invention is for the above-described underwater structure that has not deteriorated in order to solve the problem of repairing only necessary portions and reducing the construction cost. While fixing the closing surface formed in a shape capable of closing the insertion recess, attached to the lower end of the guide member, the guide member, and the guide member in any aspect, A panel support member for supporting the repair formwork panel at a predetermined height position.

  Also, in the repair formwork system according to the present invention, in order to solve the problem of simplifying the work of uniformly filling the underwater concrete, the guide member has a plurality of through holes through which the underwater concrete passes. It is formed along the direction.

  In order to solve the problem that the underwater structure repair method according to the present invention can shorten the construction period due to excellent workability and suppress the construction cost, and easily repair the underwater structure, any one of the above-described aspects An underwater structure repair method for repairing an underwater structure using the repair formwork system of the guide member, the guide member mounting step of mounting the guide member in a substantially vertical direction along the repair surface of the underwater structure, A repair formwork panel sinking step for sinking the repair formwork panel while guiding the guided member along the guide member, and between the repair formwork panel and the repair surface of the underwater structure. An underwater concrete filling step of filling the underwater concrete.

  The underwater structure repair method according to the present invention is any of the above-described methods for solving the problem of repairing only necessary portions and reducing the construction cost for an underwater structure whose lower part has not deteriorated. An underwater structure repair method for repairing an underwater structure using the repair formwork system according to the above aspect, wherein the guide member is attached in a substantially vertical direction along the repair surface of the underwater structure And a panel support member attaching step for attaching the panel support member to a lower end portion of the guide member with respect to the repair surface of the underwater structure, and for the repair while guiding the guided member along the guide member. A repair formwork panel sinking step for sinking the formwork panel, and an underwater concrete filling step for filling underwater concrete between the repair formwork panel and the repair surface of the underwater structure; Having.

  According to the present invention, the construction period can be shortened by the excellent workability, the construction cost can be suppressed, and the underwater structure can be repaired easily.

1 is a partial cross-sectional perspective view showing a first embodiment of a repair formwork panel and a repair formwork system according to the present invention. It is a general view which shows the underwater structure repaired with the formwork panel for repair of this 1st Embodiment, and the formwork system for repair. It is a top view of the formwork system for repair in this 1st Embodiment. It is the (a) 4A-4A sectional view taken on the line in FIG. 3, and (b) 4B-4B front view. 5A is a sectional view taken along line 5A-5A, and FIG. 5B is an end view taken along line 5B-5B. It is a perspective view of the formwork panel for repair in this 1st Embodiment. FIG. 4 is an enlarged view of a region 7A in FIG. It is a flowchart which shows the underwater structure repair construction method of this 1st Embodiment. It is a general view which shows the underwater structure repaired by 2nd Embodiment of the formwork panel for repair which concerns on this invention, and the formwork system for repair. It is a top view of the formwork system for repair in this 2nd Embodiment. It is a perspective view of the formwork panel for repair in this 2nd Embodiment. It is the (a) 12A-12A sectional view taken on the line in FIG. 10, and (b) 12B-12B sectional view taken on the line. It is the (a) 13A-13A sectional view taken on the line in FIG. 10, and (b) 13B-13B end view. It is the (a) top view, (b) side view, and (c) front view of the panel support member in the second embodiment. It is a flowchart which shows the underwater structure repair construction method of this 2nd Embodiment.

  Hereinafter, a first embodiment of a repair formwork panel, a repair formwork system, and an underwater structure repair method using the same according to the present invention will be described with reference to the drawings.

  In the first embodiment, the repair formwork system 1A is for repairing an underwater structure, and as shown in FIG. 1, a guide member 2 attached to a repair surface 10a of the underwater structure 10. And a repair formwork panel 3 </ b> A attached to the guide member 2. Each configuration will be described below.

  In the present invention, the underwater structure 10 is a concept including all structures installed in water such as a harbor, coast, ocean or river. Moreover, in this 1st Embodiment, as shown in FIG. 2, the underwater structure 10 is comprised with the breakwater constructed | assembled using the above-mentioned steel box, The repair formwork system 1A is the said breakwater It is installed both outside and inside the port.

  The guide member 2 is for installing the repair form panel 3 </ b> A on the repair surface 10 a of the underwater structure 10. In the first embodiment, as shown in FIGS. 1 and 3, the guide member 2 is made of an H-shaped steel having a substantially H-shaped cross section, as shown in FIGS. 1 and 2. The underwater structure 10 is attached in a substantially vertical direction along the repair surface 10a. In the present invention, the substantially vertical direction is not limited to a strict vertical direction, but includes a direction slightly inclined with respect to the vertical direction within a range where the effects of the present invention can be obtained.

  In the first embodiment, as shown in FIGS. 4A and 4B, the guide member 2 is attached to a position corresponding to a guided member 33 of a repair formwork panel 3A described later. The guided member 33 is slidably guided in the vertical direction. The guide member 2 can be attached by, for example, forming an insertion hole at a position corresponding to a healthy portion of the repair surface 10a and driving a resin anchor bolt or the like. In this embodiment, as shown in FIG. 4A, two anchor bolts 21 are used in the vicinity of the upper end, eight in the vicinity of the center, and four in the vicinity of the lower end. It is not restricted to this, It is possible to select suitably. Therefore, if the superstructure and the bottom of the steel plate have a predetermined strength, the guide member 2 can be easily attached even if the strength of the repair surface 10a is insufficient or there is a dent or a hole. .

  Further, in the first embodiment, the guide member 2 is formed with a plurality of through holes 22 along the longitudinal direction, as shown in FIG. As a result, the underwater concrete filled between the repair formwork panel 3A and the repair surface 10a of the underwater structure 10 flows through each through-hole 22 and is uniformly in the repair formwork panel 3A. It will be prevalent. Similar through holes may be provided not only in the guide member 2 but also in the guided member 33.

  The repair form panel 3 </ b> A is installed on the repair surface 10 a of the underwater structure 10 and functions as a formwork, and also functions as an outer wall of the underwater structure 10 as it is. In the first embodiment, the repair formwork panel 3A is made of panel-shaped reinforced concrete. As shown in FIG. 6, the dam plate 31 for damming the placed underwater concrete, and the left and right sides of the dam plate 31 A pair of side plates 32 and 32 projecting from both end edges and a guided member 33 attached to the back surface of the dam plate 31 are configured. Hereinafter, each component will be described in detail.

  In the first embodiment, the repair form panel 3A is divided into three parts in the vertical direction and two parts in the left and right direction as shown in FIG. 6, but the present invention is not limited to this configuration. That is, as long as it is compact, it may be configured as a single unit without being divided. On the other hand, the repair formwork panel 3A for repairing a wider area may be divided into a larger number.

  Further, in the first embodiment, as shown in FIG. 5B, the repair form panel 3A is integrated by inserting a through bolt 35 through a communication hole 34 communicated in the vertical direction and fixing with a nut. However, the present invention is not limited to this configuration, and other connection methods can be selected as appropriate. The upper portion of the through bolt 35 is cut after the repair formwork panel 3A is installed.

  The dam plate 31 is made of flat reinforced concrete, and is arranged at a predetermined interval from the repair surface 10a of the underwater structure 10. Further, as shown in FIGS. 4B, 5A, and 6, a guided member 33 is attached to the back surface of the barrier plate 31 at a position corresponding to the guide member 2 attached to the repair surface 10a. It has been.

  The side plates 32 protrude from the left and right end edges of the dam plate 31 as a pair and form a space filled with underwater concrete. Each side plate 32 protrudes with substantially the same size in accordance with the distance between the back surface of the dam plate 31 and the repair surface 10a of the underwater structure 10. However, in the first embodiment, as shown in FIG. 7, a clearance for smoothly sliding the repair form panel 3 </ b> A between the tip edge of the side plate 32 and the repair surface 10 a of the underwater structure 10. Is provided. For this reason, the protruding dimension of each side plate 32 is set so as to ensure an appropriate clearance.

  In the first embodiment, as shown in FIG. 7, a leakage preventing member 36 for closing the clearance is provided inside the front edge of each side plate 32. The leakage prevention member 36 is formed of a rubber plate that is wider than the clearance and has substantially the same dimensions as the vertical length of the side plate 32. Then, the other end edge portion is fixed with a bolt in a state where one end edge portion protrudes from the front end edge of each side plate 32 along the vertical direction of each side plate 32. Accordingly, as shown in FIG. 7, the leakage preventing member 36 is in contact with the repair surface 10 a to bend and cover the clearance, so that the space between the repair form panel 3 </ b> A and the repair surface 10 a of the underwater structure 10 is This will prevent leakage of underwater concrete that is filled in.

  The guided member 33 is slidably guided with respect to the guide member 2, and sinks the repair form panel 3A to a desired position. In the first embodiment, as shown in FIGS. 6 and 7, the guided member 33 is configured by a pair of metal fittings having a substantially U-shaped cross section according to the shape of the guide member 2. The openings are attached to the back surface of the dam plate 31 so that the openings face inward and face each other.

  As a result, when the lower end portion of the guided member 33 is inserted into the upper end portion of the guide member 2, the guided member 33 is caught by the guide member 2 as shown in FIG. It can move only in the vertical direction. Therefore, the guided member 33 is arranged so as to sink the repair form panel 3A while being slidably guided with respect to the guide member 2 and to be spaced from the repair surface 10a.

  In addition, the structure of the to-be-guided member 33 is not limited above, What is necessary is just a structure hooked on the guide member 2 and guided slidably. For example, in the first embodiment, it is configured by a pair of U-shaped brackets, but one member formed by providing a hook-shaped portion bent inward at each opening end of the U-shaped bracket. You may comprise as. Moreover, in this 1st Embodiment, although the to-be-guided member 33 is being fixed with the volt | bolt to the insert embedded in the back surface of the dam plate 31, it is not limited to this structure, Other fixing methods are selected suitably May be.

  Next, the operation of the repair formwork panel 3A, the repair formwork system 1A of the first embodiment having the above-described configuration, and the underwater structure repair method using the same will be described with reference to FIG. .

  In the first embodiment, as a preparation stage, first, a repair form panel 3A is prepared (step S11). Specifically, the repair form panel 3A divided in the vertical direction is connected and integrated, and the guided member 33 is fixed to the back surface thereof. Thereby, the formwork panel 3A for repair is easy to carry in a compact state to the construction site, and is easily and quickly assembled at the construction site. Note that when the repair formwork panel 3A is not divided, the above connecting operation is unnecessary, and if the guided member 33 is also attached in advance, this preparation step is unnecessary.

  Next, the guide member 2 is attached in a substantially vertical direction along the repair surface 10a of the underwater structure 10 (guide member attachment step: step S12). At this time, since the guide member 2 is attached if at least the upper end portion and the lower end portion are fixed, the guide member 2 is bridged even if there is a location where the strength of the repair surface 10a is insufficient or there is a dent, a hole or the like. It can be easily attached to the structure 10 with sufficient strength. In the repair surface 10a to which the guide member 2 is attached, it is preferable to remove deteriorated concrete, repair a deteriorated steel plate, and remove attached organisms by a water jet or the like.

  Next, after the repair formwork panel 3A is lifted using a crane truck or the like, the repair formwork panel 3A is lowered while the guided member 33 is guided along the guide member 2 (the repair formwork panel is lowered). Process: Step S13). As a result, the guide member 2 guides the guided member 33 vertically downward while keeping the distance between the repair form panel 3A and the repair surface 10a constant, and the repair form panel 3A with respect to the repair surface 10a. Install easily and firmly. Moreover, as shown in FIGS. 1 and 5, the repair form panel 3A is stopped and the installation is completed when the lower end portion reaches the seabed (root fixation block). As a result, the weir plate 31 and the pair of side plates 32, 32 of the repair form panel 3A form an internal space for filling the underwater concrete together with the repair surface 10a and the sea floor.

  Finally, underwater concrete is filled between the repair form panel 3A and the underwater structure 10 (underwater concrete filling step: step S14). At this time, the leakage preventing member 36 prevents underwater concrete from leaking from between the repair surface 10a and the leading edge of each side plate 32. Moreover, since the through-hole 22 formed in the guide member 2 distribute | circulates underwater concrete freely, even if it injects underwater concrete from one place, it will be filled uniformly in the said internal space partitioned off by the guide member 2. . Before placing the underwater concrete, it is preferable to lay a waterproof cloth on the seabed to prevent leakage of the underwater concrete.

  When the curing of the underwater concrete is completed, as shown in FIG. 2, the repair form panel 3A is integrated with the repair surface 10a of the underwater structure 10 covered, and functions as a new outer wall surface. The repair width from the repair surface 10a to the new outer wall surface is only about 60 to 70 cm, and the repair is completed with an expanded width less than half that of the conventional construction method.

According to the repair formwork panel 3A, the repair formwork system 1A, and the underwater structure repair method of the first embodiment as described above, the following effects are obtained.
1. Since there is no need to insert a differential bar or the like in the repair surface 10a of the underwater structure 10, and the widening work of the foundation mound is unnecessary, the workability is excellent, the construction period can be shortened and the construction cost can be suppressed. .
2. The guide member 2 can be securely attached to the repair surface 10a having a lack of strength, or a dent or hole, aiming at a healthy place, and the underwater structure 10 can be repaired easily.
3. Since the H-shaped steel with high rigidity is used as the guide member 2 and integrated into the underwater concrete, it has durability against shrinkage stress after placement and durability at the joint between the repair surface 10a and the underwater concrete that are likely to be weak points. Can be improved.
4). By adopting reinforced concrete as the repair form panel 3A, the manufacturing cost can be reduced, and the appearance as an outer wall surface can be improved as compared with a steel plate.
5. Since the repair formwork panel 3A is manufactured on land such as a factory or the site, uniform quality can be ensured.
6). By simply sinking the guided member 33 along the guide member 2, the repair form panel 3 </ b> A is installed at a predetermined position, and no demolding work is required. .
7). Since the repair formwork panel 3A is thin and has sufficient durability, there is no need to widen the foundation mound, the amount of underwater concrete filling can be reduced, and the water surface narrowed by repair can be minimized. it can.
8). The leakage prevention plate can prevent leakage of the underwater concrete into the water.
9. The through-hole 22 formed in the guide member 2 allows the placed underwater concrete to freely pass therethrough and can be uniformly filled as a whole.

  Next, a second embodiment of a repair formwork panel 3B, a repair formwork system 1B, and an underwater structure repair method using the same according to the present invention will be described. Note that, in the configuration of the second embodiment, the same or corresponding components as those in the first embodiment described above are denoted by the same reference numerals, and description thereof is omitted.

  The repair formwork system 1B of the second embodiment is for selectively repairing only necessary portions of the underwater structure 10, and as shown in FIGS. 9 and 10, the second embodiment of the present invention. The repair formwork panel 3B, the guide member 2, and the panel support member 4 for supporting the repair formwork panel 3B at a predetermined height position.

  Note that the outer wall surface of the underwater structure 10 is likely to deteriorate at a portion where the water surface rises and falls like the vicinity of the intertidal zone, and a healthy state is often maintained at the lower portion below the water surface. For this reason, the repair form panel 3B, the repair form system 1B, and the underwater structure repair method using the repair form panel 3B according to the second embodiment are particularly suitable in such a case. Hereinafter, each component will be described with a focus on differences from the first embodiment.

  As shown in FIG. 11, the feature of the repair formwork panel 3 </ b> B of the second embodiment is that it protrudes from the lower edge of the barrier plate 31 in accordance with the distance from the repair surface 10 a of the underwater structure 10. The bottom plate 37 is provided with an insertion recess 38 through which the guide member 2 is inserted in the vicinity of the lower end of the guided member 33. The bottom plate 37 protrudes with the same dimensions as the pair of side plates 32, 32, and the protruding dimension is set so as to ensure a clearance between the tip edge of the bottom plate 37 and the repair surface 10 a of the underwater structure 10. Has been.

  In the second embodiment, the insertion recess 38 is formed so as to cut out a position corresponding to the lower end of the guided member 33 as shown in FIGS. 11 and 12B. Thereby, the guide member 2 can be inserted from the lower end portion of the guided member 33.

  In the second embodiment, the clearance between the repair surface 10a and the bottom plate 37 is provided inside the front edge of the bottom plate 37, as shown in FIG. A leakage preventing member 36 is provided to prevent leakage of underwater concrete by covering the underwater.

  Furthermore, in the second embodiment, the panel support member 4 is for supporting the repair formwork panel 3B at a predetermined height position, as shown in FIGS. 12 (a) and 13 (a). In addition, the lower surface of the guide member 2 is attached to the repair surface 10 a of the underwater structure 10. Further, as shown in FIG. 14, the panel support member 4 has a closing surface 41 formed in a shape capable of closing the insertion recess 38, and a support fixing portion 42 that supports and fixes the blocking surface 41. Accordingly, the closed surface 41 is in contact with and supported by the bottom plate 37 of the repair form panel 3B, and the underwater concrete is prevented from flowing out from the insertion recess 38.

  Next, the operation of the repair formwork panel 3B, the repair formwork system 1B, and the underwater structure repair method according to the second embodiment having the above-described configuration will be described with reference to FIG.

  First, like the first embodiment, after preparing the repair form panel 3B (step S11), the guide member 2 is attached in a substantially vertical direction along the repair surface 10a of the underwater structure 10 (guide member attachment step: Step S12). Next, in this 2nd Embodiment, the panel support member 4 is attached to the lower end part of the guide member 2 with respect to the repair surface 10a of the underwater structure 10 (panel support member attachment process: step S21). At this time, as shown in FIG. 12A and FIG. 13A, the panel support member 4 is easily corroded by attaching the panel support member 4 with a gap so as not to contact the guide member 2. Corrosion transfer to 2 is prevented.

  Subsequently, the repair formwork panel 3B is sunk while the guided member 33 is guided along the guide member 2 (repair formwork panel sinking step: step S13). Thereby, the panel support member 4 stops the repair form panel 3B when the lower surface of the bottom plate 37 abuts against the closing surface 41, and supports it at a predetermined height position. For this reason, the dam plate 31, the pair of side plates 32 and 32, and the bottom plate 37 of the repair form panel 3B together with the repair surface 10a form an internal space for filling the underwater concrete.

  Finally, underwater concrete is filled between the repair form panel 3B and the underwater structure 10 (underwater concrete filling step: step S14). At this time, since the repair form panel 3B has the bottom plate 37, the placed underwater concrete is held without being submerged to the lowest part. Moreover, since only the part which needs repair is coat | covered, compared with the case where it coat | covers to a healthy part, the quantity of underwater concrete may be small and construction cost will reduce. In the second embodiment, each leakage prevention member 36 prevents underwater concrete from leaking from between the side plates 32 and the bottom plate 37 and the repair surface 10a.

  According to the second embodiment as described above, the repair formwork panel 3B is supported at a predetermined height position with respect to the underwater structure 10 by the panel support member 4, and is the same as in the first embodiment described above. Has an effect. Further, according to the second embodiment, in addition to the effects of the first embodiment described above, only the necessary part in the underwater structure 10 can be repaired with a pinpoint, so that the construction cost can be further reduced, There is an effect that the construction period can be further shortened.

  The repair formwork panel, the repair formwork system, and the underwater structure repair method using the same according to the present invention are not limited to the above-described embodiments, and can be appropriately changed. For example, in each of the above-described embodiments, the pair of side plates 32 of the repair form panels 3A and 3B protrude from the left and right end edges, but the present invention is not limited to this configuration, and is only on the left or right. The side plate 32 may be provided. As a result, when a plurality of repair form panels 3A and 3B are continuously installed in the left-right direction, an end portion without the side plate 32 is brought into contact with the side plate 32 of the adjacent repair form panel 3A or 3B. Therefore, it is possible to reduce the size and cost of the repair form panels 3A and 3B.

  Moreover, in each embodiment mentioned above, although the guide member 2 is comprised by H-section steel, it is not restricted to this structure, The site | part which can be attached to the repair surface 10a, and the to-be-guided member 33 can be guided. Any structure may be used. Furthermore, the guided member 33 is configured by a pair of metal parts bent in a substantially U-shaped cross section, but is not limited to this configuration, and may be appropriately changed according to the shape of the guide member 2 and the like. .

  Further, in each of the above-described embodiments, the repaired formwork panels 3A and 3B are attached with the guided member 33 after being connected. However, the present invention is not limited to this method, and each repaired formwork is divided. A guided member 33 having the same length as the height of the panels 3A and 3B may be attached in advance. Thereby, the repair form panels 3A and 3B are completed only by connecting the repair form panels 3A and 3B.

  In each embodiment mentioned above, since two guide members 2 are often used as one set, the guide members 2 may be connected in advance by two or three strings. This simplifies the on-site confirmation operation and allows the substantially parallel state to be maintained even when attached to the repair surface 10a.

  In the second embodiment described above, the bottom plate 37 of the repair formwork panel 3B is supported by the panel support member 4. However, the repair formwork panel 3B can be supported at a predetermined height position. If it exists, it is not restricted to this structure. For example, the panel support member 4 may be configured as a member that closes the upper end portion of the guided member 33. Thus, when the guided member 33 is lowered along the guide member 2, the panel support member 4 comes into contact with the upper end portion of the guide member 2 to support the repair form panel 3B at a predetermined height position. It becomes possible. In this case, it is preferable that the panel support member 4 is provided with an air hole for extracting air from the repair form panel 3B when the underwater concrete is filled.

DESCRIPTION OF SYMBOLS 1A, 1B Repair formwork system 2 Guide member 3A, 3B Repair formwork panel 4 Panel support member 10 Underwater structure 10a Repair surface 21 Anchor bolt 22 Through-hole 31 Dam plate 32 Side plate 33 Guided member 34 Communication hole 35 Through Bolt 36 Leakage prevention member 37 Bottom plate 38 Insertion recess 41 Closure surface 42 Support fixing portion

Claims (7)

A repair formwork panel for repairing an underwater structure,
A dam plate disposed at a predetermined interval from the repair surface of the underwater structure;
A pair of side plates protruding from the left and right edges of the dam plate according to the distance from the repair surface of the underwater structure;
A metal guided member attached to the back surface of the barrier plate and slidably guided with respect to a metal guide member attached in a substantially vertical direction along the repair surface of the underwater structure; , have a,
The inside of the front edge of the side plate is filled between the repair formwork panel and the repair surface of the underwater structure by covering the clearance between the front edge and the repair surface of the underwater structure. Leakage prevention member that prevents leakage of underwater concrete is provided,
The leakage preventing member is formed of a rubber plate that is wider than the clearance and is substantially the same size as the vertical length of the side plate, and has one end edge extending from the leading edge of each side plate along the vertical direction of each side plate. The other end edge is fixed with bolts
In the case of having a bottom plate protruding from the lower end edge of the dam plate toward the repair surface of the underwater structure, the repair member is also provided inside the front end edge of the bottom plate. Formwork panel.   A bottom plate provided with an insertion recess for inserting the guide member in the vicinity of the lower end portion of the guided member is provided so as to protrude from the lower end edge of the dam plate to the repair surface of the underwater structure. The formwork panel for repair according to claim 1. A repair formwork system comprising the repair formwork panel according to claim 1 and the guide member. The repair form panel according to claim 2, the guide member, and a closing surface that is attached to a lower end portion of the guide member and is formed in a shape capable of closing the insertion recess, is brought into contact with the bottom plate. A repair formwork system comprising a panel support member that supports the repair formwork panel at a predetermined height position. The repair formwork system according to claim 3 or 4 , wherein a plurality of through holes through which the underwater concrete passes are formed in the guide member along a longitudinal direction. With repairing formwork system according to claim 5 depending on claim 3 or claim 3, a underwater structure repairing method for repairing an underwater structure,
A guide member attaching step of attaching the guide member in a substantially vertical direction along the repair surface of the underwater structure;
A repair form panel subsidence step of sinking the repair form panel while guiding the guided member along the guide member;
An underwater concrete filling step of filling underwater concrete between the repair formwork panel and the repair surface of the underwater structure;
An underwater structure repair method. An underwater structure repair method for repairing an underwater structure using the repair formwork system according to claim 4 or claim 5 dependent on claim 4 ,
A guide member attaching step of attaching the guide member in a substantially vertical direction along the repair surface of the underwater structure;
A panel support member attaching step for attaching the panel support member to a lower end portion of the guide member with respect to the repair surface of the underwater structure,
A repair form panel subsidence step of sinking the repair form panel while guiding the guided member along the guide member;
An underwater concrete filling step of filling underwater concrete between the repair formwork panel and the repair surface of the underwater structure;
An underwater structure repair method.

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