JP2017155444A - Joint structure, revetment structure and revetment construction method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a joint structure, a revetment structure and a revetment construction method capable of surely blocking up a clearance between mutual adjacent revetment structures.SOLUTION: A joint structure comprises a plate-like blocking-up member 21 arranged over between mutual inner surfaces 11a of a recessed part 11 of respective revetment structures 10 so as to block up a clearance formed between the adjacent revetment structures 10 and fastened to the inner surface 11a of the respective recessed parts 11 by a fastening member 30, a long hole part 40 provided in the blocking-up member 21 and capable of adjusting an error in an installation position of the fastening member 30 and a filler 22 arranged so as to fill up a part enclosed by the inner surface 11a of at least the recessed part 11 and the blocking-up member 21 and including an asphalt mixture.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a joint structure, a revetment structure, and a revetment construction method.

  When reclaiming land is constructed on the coast, a revetment structure is constructed on the seabed in the target area. This revetment structure is constituted by a plurality of revetment structures (caissons, L-shaped blocks, etc.) arranged so as to surround the target area. The plurality of revetment structures are configured such that adjacent revetment structures are blocked by a joint structure in order to prevent waste or earth and sand used for landfill from flowing into the sea area. As a joint structure, for example, a structure in which a gap between revetment structures is closed by a bag body containing slag material or the like (see, for example, Patent Document 1) or a structure in which a gap between revetment structures is closed with a joint plate. (See, for example, Patent Document 2).

JP 2013-019132 A Japanese Patent Laying-Open No. 2005-042307

  In a joint structure in which the gap between the revetment structures is closed with a joint plate, when the joint plate is attached, for example, the joint plate is disposed so as to straddle between the side surfaces of the revetment structure, and each member is connected with a fastening member such as a bolt. Fasten to the side. However, when arranging a large revetment structure, it is difficult to always make the positional relationship between the side surfaces constant, and an error may occur. In such a case, since it is necessary to adjust the attachment position of a fastening member each time, it becomes difficult to ensure construction accuracy, and the work load increases.

  The present invention has been made in view of the above, and provides a joint structure, a revetment structure, and a revetment construction method capable of reducing the work burden at the time of installing a joint plate and ensuring construction accuracy. The purpose is to provide.

  The joint structure according to the present invention is a joint structure that closes between the revetment structures arranged side by side on the seabed ground, and a plurality of the revetment structures are arranged at the opposing portions of the adjacent revetment structures. Each has a concave portion formed in a belt shape along the vertical direction, and the inner surfaces of the concave portions facing each other in the revetment structure so as to close a gap formed between the adjacent revetment structures. A plate-shaped closing member that is disposed between and attached to the inner surface of each of the recesses by a fastening member, and has an error adjustment mechanism that adjusts an error in the mounting position of the fastening member; and at least the recesses A filler that is disposed so as to fill at least a part of the space surrounded by the inner surface and the blocking member, and includes an asphalt mixture.

  According to the present invention, since the error of the attachment position of the fastening member can be adjusted by the error adjustment mechanism, the closing member can be easily attached even when the positions of the inner surfaces of the opposing recesses are different. Thereby, it becomes possible to reduce the work burden at the time of installation, and to ensure construction accuracy.

  Further, the error adjustment mechanism may have an elongated hole portion that can be inserted into the fastening member and extends in the first direction in which the adjacent bank protection structures are arranged.

  According to the present invention, since the fastening member can be inserted into the portion where the long hole portion is formed, the closing member can be attached even when the positions of the inner surfaces of the opposing concave portions are different.

  Further, the elongated hole portion may be provided on one end side in the first direction of the closing member.

  According to the present invention, after the fastening member is first attached to the other end side in the first direction where the long hole portion is not provided, the one end portion side corresponds to the attachment position of the long hole portion. A fastening member can be inserted into the position. Thereby, attachment of a closure member can be performed efficiently.

  Further, the error adjustment mechanism has a deforming portion that is deformed in a second direction that is parallel to a horizontal plane and intersects the first direction according to the position of the inner surfaces to which the blocking member is attached among the concave portions facing each other. Also good.

  According to the present invention, since the closing member can be deformed according to the position of the inner surface of the recess, the closing member can be easily attached even when the positional relationship between the inner surfaces of the opposing recesses is different.

  The closing member may include a plurality of plate-like members arranged side by side in the first direction, and the deformation portion may include a hinge portion that connects the adjacent plate-like members to each other. .

  According to the present invention, since the plurality of plate-like members constituting the closing member are connected by the hinge portion, the closing member can be efficiently deformed.

  The closing member may include a plurality of plate-like members arranged side by side in the first direction, and the deforming portion may include a bellows portion that connects the adjacent plate-like members.

  According to the present invention, since the plurality of plate-like members constituting the closing member are connected by the bellows part, the closing member can be flexibly deformed.

  The filler may be provided at the bottom of the space portion, and a hollow portion may be formed above the filler in the vertical direction of the filler.

  According to the present invention, since the filler is provided at the bottom of the space, water shielding at the bottom is ensured. Moreover, since a hollow part is formed above the perpendicular direction of a filler among space parts, the joint structure excellent in construction accuracy is securable.

  Moreover, a vertical impermeable wall may be provided in the space portion.

  According to the present invention, a vertical impermeable wall provided in the space serves as a backup, and a joint structure having high water impermeability is obtained.

  The revetment structure according to the present invention is arranged side by side on the seabed ground, and has a plurality of revetment structures each having a recess formed in a strip shape along the vertical direction at the opposing portion, and between the adjacent revetment structures. And the joint structure that closes at least one portion.

  According to the present invention, since the joint structure that can reduce the work burden at the time of installation is provided, the revetment structure can be easily created.

  The revetment construction method according to the present invention is a revetment construction method that is arranged side by side on the seabed ground and closes between adjacent revetment structures, and a plurality of the revetment structures are formed by adjoining the revetment structures. An error that adjusts an error in the attachment position of the fastening member so as to close a gap formed between adjacent revetment structures, each of which has a concave portion formed in a belt shape along the vertical direction in the opposing portion. The step of disposing a plate-shaped blocking member having an adjustment mechanism between the inner surfaces of the recesses of the respective revetment structures, and the fastening member, the blocking member is disposed on the revetment structure by the fastening member. A step of fixing to the inner surface of the recess, and a filler containing an asphalt mixture is disposed in the portion so as to fill at least a part of the space surrounded by at least the inner surface of the recess and the closing member. And a step.

  According to the present invention, when attaching the fastening member, the error of the fastening member attaching position can be adjusted by the error adjusting mechanism. Therefore, even when the positions of the inner surfaces of the opposing recesses are different, the closing member can be easily provided. Can be attached. Thereby, it becomes possible to reduce the work burden at the time of installation.

  Moreover, the said some revetment structure may be arrange | positioned in the opening part which navigates a ship among revetment structures.

  When installing a revetment structure at the opening of a revetment structure, a larger revetment structure may be installed than other parts of the revetment. Since the joint structure according to the present invention closes the gap between the revetment structures installed in such an opening, when a large revetment structure is set, the positions of the inner surfaces of the opposing recesses Even when the relationship is greatly different, the closing member can be easily attached.

  Further, when the revetment structure is disposed on the seabed ground, the clogging member is attached in advance to at least one of the adjacent revetment structures, and the crevice member is attached to the gap. You may arrange the said revetment structure adjacent to the position where is closed.

  According to the present invention, since the gap is closed in a state where the revetment structure is installed, it is possible to greatly reduce the work burden when installing the closing member in the recess.

  According to the present invention, it is possible to reliably close a gap between adjacent revetment structures.

FIG. 1 is a diagram illustrating an example of a bank protection structure according to the present embodiment. FIG. 2 is a diagram illustrating an example of a deadline. FIG. 3 is a diagram illustrating an example of a gap between adjacent revetment structures. FIG. 4 is a diagram illustrating an example of a closing member. FIG. 5 is a diagram illustrating an example of a closing member. FIG. 6 is a diagram illustrating an example in which the position of the revetment structure varies. FIG. 7 is a flowchart showing an example of the bank protection construction method according to the present embodiment. FIG. 8 is a diagram for explaining one step of the revetment construction method. FIG. 9 is a view showing a closing member according to a modification. FIG. 10 is a view showing a closing member according to a modification. FIG. 11 is a diagram illustrating a joint structure according to a modification. FIG. 12 is a diagram illustrating a joint structure according to a modification. FIG. 13 is a diagram illustrating one process of the revetment construction method according to the modification. FIG. 14 is a diagram illustrating one process of the revetment construction method according to the modification. FIG. 15 is a diagram illustrating one process of the revetment construction method according to the modification.

  Hereinafter, embodiments of a joint structure, a revetment structure and a revetment construction method according to the present invention will be described with reference to the drawings. In addition, this invention is not limited by this embodiment. In addition, constituent elements in the following embodiments include those that can be easily replaced by those skilled in the art or those that are substantially the same.

  FIG. 1 is a diagram illustrating an example of a bank protection structure according to the present embodiment. As shown in FIG. 1, the revetment structure 100 has a revetment 101, an opening 102, and a deadline 103. The revetment structure 100 is, for example, a management-type revetment constructed on the seabed of the target area R when a landfill is created in the coastal area of the sea area S, but is not limited thereto.

  The revetment part 101 is arrange | positioned so that the target area R may be enclosed. In the revetment part 101, for example, caissons, L-shaped blocks and the like are arranged along the outer periphery of the target area R. The opening 102 is provided in a part of the revetment 101 so that a work vessel or the like used for the revetment construction can navigate inside and outside the target area R. The deadline 103 is disposed so as to close the opening 102. The deadline 103 is installed in the opening 102 at the final stage of the revetment construction work, for example.

  FIG. 2 is a diagram illustrating an example of the deadline 103. As shown in FIG. 2, the deadline 103 has a revetment structure 10 and a joint structure 20. A plurality of revetment structures 10 are arranged between end portions of the revetment portion 101. Hereinafter, the direction in which the plurality of revetment structures 10 are arranged is referred to as a first direction D1. A direction orthogonal to the first direction D1 is referred to as a second direction D2. In addition, let the 1st direction D1 and the 2nd direction D2 be a direction parallel to a horizontal surface, respectively. The plurality of revetment structures 10 are arranged, for example, with a gap G in the first direction D1. The dimension of the gap G in the first direction D1 is, for example, about 0.5 m.

  The revetment structure 10 is, for example, a rectangular box caisson. A hybrid caisson or the like may be provided as the bank protection structure 10. The dimension of the revetment structure 10 in the first direction D1 and the second direction D2 is, for example, about 30 m. The plurality of revetment structures 10 are arranged so that the parallel end faces 10a face each other. The revetment structure 10 has a recess 11. The recessed part 11 is provided in the end surface 10a of the 1st direction D1 among the revetment structures 10, respectively. The concave portion 11 is formed in a band shape from the upper end to the lower end in the vertical direction on each end face 10a.

  FIG. 3 is a diagram illustrating an example of the gap G between adjacent revetment structures 10. As shown in FIG. 3, two recesses 11 are provided side by side in the second direction D2 on each end face 10a. Each recessed part 11 arrange | positioned at the adjacent bank protection structure 10 is arrange | positioned in the position which mutually opposes. For this reason, between the adjacent revetment structures 10, a rectangular space portion 13 in a plan view is formed by the recess 11 formed in one revetment structure 10 and the recess 11 formed in the other revetment structure 10. Is formed. The space portion 13 is wide enough for a diver or the like to enter, for example, to perform a predetermined operation such as attachment of a fastening member 30 described later. Since each of the end surfaces 10 a is provided with two recesses 11, two such space portions 13 are formed in the gap G. For example, each recess 11 has a dimension in the first direction D1 of about 1 m and a dimension in the second direction D2 of about 2 m.

  The joint structure 20 closes between the adjacent revetment structures 10. By providing the plurality of revetment structures 10 and joint structures 20, waste, retained water, landfill materials, and the like used for landfill of the target area R are prevented from flowing into the sea area S. The joint structure 20 is provided inside the space portion 13.

  The joint structure 20 according to the present embodiment includes a closing member 21 and a filler 22. The blocking member 21 is disposed across the inner surfaces 11a of the recesses 11 of the respective bank protection structures 10 so as to block the gap G between the adjacent bank protection structures 10. Further, the space between the space 13 and the gap G is closed by the closing member 21.

  The filler 22 is disposed so as to fill a portion surrounded by the inner surface 11 a of the recess 11 and the closing member 21, that is, the space 13 closed by the closing member 21. As the filler 22, a filler typified by an asphalt mixture is used. In addition, the filler 22 may be arrange | positioned also in the clearance gap part 23 pinched | interposed into the joint structure 20 among the clearance gaps G between the adjacent revetment structures 10. In addition, in place of the asphalt mixture or in addition to the asphalt mixture, for example, a natural stone such as gravel may be disposed in the gap portion 23 in addition to the soil-based water shielding material. Moreover, natural stones, such as gravel, may be arranged outside the second direction D2 with respect to the joint structure 20 in the gap G, in addition to the asphalt mixture and the soil-based water shielding material.

  4 and 5 are diagrams showing an example of the closing member 21. FIG. FIG. 4 is a diagram illustrating a state in which the closing member 21 is viewed from above. FIG. 5 is a diagram showing a state seen from the direction of the white arrow in FIG. In FIG. 4, both end portions of the revetment structure 10 in the first direction D1 are omitted. In FIG. 5, both end portions and the lower side in the first direction D <b> 1 and the lower side of the closing member 21 are omitted from the revetment structure 10.

  As shown in FIGS. 4 and 5, the closing member 21 is fastened to the inner surface 11 a of the recess 11 by a plurality of fastening members 30. A screw hole 12 into which the fastening member 30 can be inserted is formed in the inner surface 11a of the recess 11. For example, a bolt or the like is used as the fastening member 30. The fastening member 30 has a head portion 30a and a screw portion 30b. The closing member 21 has a long hole portion (error adjusting mechanism) 40 and a round hole portion 41 into which the fastening member 30 can be inserted.

  The long hole portion 40 is provided on one end side in the first direction D <b> 1 of the closing member 21. In the present embodiment, as shown in FIGS. 4 and 5, the long hole portion 40 is provided on the left end portion side in the first direction D1. A plurality of the long hole portions 40 are provided side by side in the vertical direction. The long hole portion 40 is formed, for example, extending in the first direction D1. About the dimension of the 1st direction D1 of the long hole part 40, all the long hole parts 40 located in a line with a perpendicular | vertical direction may be the same, and at least 1 may be a different dimension. The long hole part 40 can insert the screw part 30b of the fastening member 30 over the first direction D1. The fastening member 30 can be inserted into a desired position in the first direction D1 in the long hole portion 40. Therefore, the fastening member 30 can be attached to the portion where the long hole portion 40 is formed in the first direction D1. In addition, the long hole part 40 is formed in the dimension into which the head part 30a of the fastening member 30 is not inserted. The long hole part 40 is provided in the range which overlaps the inner surface 11a of the recessed part 11 among the closure members 21. FIG.

  The round hole portion 41 is provided on the other end side in the first direction D <b> 1 of the closing member 21. In the present embodiment, as shown in FIGS. 4 and 5, the round hole portion 41 is provided on the right end portion side in the first direction D1. A plurality of round hole portions 41 are provided side by side in the vertical direction. The round hole 41 is formed in a circular shape, for example. The diameter of the round hole portion 41 is formed such that the screw portion 30b can be inserted and the head portion 30a is not inserted.

  FIG. 6 shows an example where the position of the revetment structure 10 is different from the case shown in FIG. As shown in FIG. 6, for example, when the revetment structures 10 are arranged at positions close to the first direction D <b> 1, the first direction D <b> 1 between the screw hole portions 12 formed in each inner surface 11 a of the opposing recess 11. This distance L2 is closer than the distance L1 shown in FIG. At this time, for example, as shown in FIG. 6, when the screw hole portion 12 formed on the inner surface 11 a on the left side in the drawing overlaps with the long hole portion 40, the fastening member 30 is moved to the long hole portion 40 and the screw hole portion 12. Can be inserted.

  Further, when the revetment structures 10 are arranged at positions distant from each other in the first direction with respect to the case shown in FIG. 5, the first direction between the screw hole portions 12 formed in each inner surface 11a of the opposing concave portion 11. The distance D1 is longer than the distance L1 shown in FIG. At this time, when the screw hole portion 12 formed in the inner surface 11a on the left side in the drawing overlaps with the long hole portion 40, the fastening member 30 can be inserted into the long hole portion 40 and the screw hole portion 12 as described above. it can. Thus, even if the long hole part 40 is a case where the position of the bank protection structure 10 differs, the error of the attachment position of the fastening member 30 can be adjusted.

  FIG. 7 is a flowchart illustrating an example of a bank protection construction method according to the present embodiment. Hereinafter, the revetment construction method when closing the opening 102 of the revetment structure 100 will be described as an example. The revetment construction method in this case is to close the gap between adjacent revetment structures 10 among a plurality of revetment structures 10 arranged side by side on the seabed ground, and construct the cut-off portion 103. Hereinafter, one gap G will be described as an example. The other gaps G can be described in the same way, and will not be described.

  First, the blocking member 21 is disposed across the inner surfaces 11a of the recesses 11 of the respective bank protection structures 10 so as to block the gap G formed between the adjacent bank protection structures 10 (step S10). In step S10, alignment is performed so that the screw hole 12 formed in the inner surface 11a of the recess 11 overlaps the elongated hole 40 and the round hole 41 (see FIG. 5 and the like) of the closing member 21.

  FIG. 8 is a diagram for explaining one step of the revetment construction method. As shown in FIG. 8, in the state where a plurality of revetment structures 10 are arranged in the opening 102, when the tide level is different between the sea area S and the target area R, the seawater flow Q (one point in FIG. 8) A chain line arrow) may be formed. In step S <b> 10, since the gap G is closed by arranging the blocking member 21, when the seawater flows into the space portion 13 from the sea area S, the blocking member 21 is blocked. For this reason, the flow of seawater in the gap G can be suppressed.

  Moreover, in step S10, as shown in FIG. 8, among the two space portions 13 arranged in the second direction D2, the first blockage is performed on the upstream space portion 13 in the direction in which the seawater flow Q is formed. The member 21 is disposed. For example, when the tide level on the sea area S side is higher than the tide level on the target area R side, that is, when the direction of the flow Q is the direction from the sea area S side to the target area R side, A first closing member 21 is arranged.

  At this time, as shown in FIG. 8, the closing member 21 is disposed so as to close the gap G on the downstream side of the flow Q in the space portion 13 (the gap G on the target area R side). Thereby, when seawater flows from the sea area S into the space part 13, a water pressure difference is formed between the space part 13 and a portion on the target area R side with the blocking member 21 sandwiched with respect to the space part 13. . The closing member 21 is pushed by the inner surface 11a of the recess 11 due to this water pressure difference.

  Next, the first closing member 21 arranged in the space 13 is fastened to the inner surface 11a of the recess 11 by the fastening member 30 (step S20). In step S <b> 20, for example, a diver enters the space 13 where the first closing member 21 is disposed, and the fastening member 30 is inserted into the long hole portion 40 and the round hole portion 41 to form the recess 11 of the closing member 21. Fastened to the inner surface 11a. Since the oblong portion 40 is provided in the closing member 21, the closing member 21 can be fastened even when the distance in the first direction D <b> 1 of the screw hole portion 12 varies depending on the space portion 13. Moreover, since the flow of seawater in the gap G is suppressed by the closing member 21, the work load of the diver is reduced.

  After the first closing member 21 is fixed, the remaining three closing members 21 are similarly disposed across the inner surfaces 11a of the respective recesses 11 and then closed by the fastening members 30. The member 21 is fixed. In the above description, the case where the first three closing members 21 are arranged and fixed, and then the other three closing members 21 are arranged and fixed is described as an example. However, the present invention is not limited to this. Absent. For example, in step S <b> 10, all the four closing members 21 are arranged and temporarily fixed between the inner surfaces 11 a of the recesses 11, and then the diver fixes the four closing members 21 with the fastening members 30 in step S <b> 20. You may do it.

  Next, the filler 22 is disposed in the two space portions 13 so as to fill the two space portions 13 surrounded by the inner surface 11a of the recess 11 and the closing member 21 (step S30). In step S <b> 30, the filler 22 is charged from the top of each space portion 13. By arranging the filler 22, seawater accumulated in each space portion 13 overflows from the upper portion of the space portion 13, for example. At this time, the filler 22 may be placed so as to leave seawater in each space 13. Note that the filler 22 may be placed so that the seawater in each space 13 is discharged by a pump or the like before the filler 22 is charged.

  As described above, in the joint structure 20 according to the present embodiment, since the oblong portion 40 is provided in the closing member 21, the fastening member 30 is attached to a portion where the oblong portion 40 is formed in the first direction D1. Is possible. With this configuration, even when the positions of the inner surfaces 11a of the opposing recesses 11 are different, the error in the attachment position of the fastening member 30 can be adjusted, so that the closing member can be easily attached. Thereby, it becomes possible to reduce the work burden at the time of installation.

  Moreover, since the revetment structure 100 which concerns on this embodiment is equipped with the joint structure 20 which can block | close the clearance gap between adjacent revetment structures 10 reliably, the waste inside the revetment structure 100, retained water, a landfill material, etc. Can be reliably prevented from flowing into the sea area S.

  Moreover, the bank protection construction method which concerns on this embodiment arrange | positions the obstruction | occlusion member 21 between the inner surfaces 11a of the recessed part 11 of each bank protection structure 10, and seawater is provided to the clearance gap G between the said bank protection structures 10 between. Can be prevented from entering. Thereby, since the flow of the seawater inside the recess 11 is reduced, it is possible to facilitate the fixing operation of the closing member 21 inside the recess 11.

  The technical scope of the present invention is not limited to the above-described embodiment, and appropriate modifications can be made without departing from the spirit of the present invention. For example, in the above-described embodiment, the configuration in which the long hole portion 40 is formed to extend in the first direction D1 has been described as an example. However, the configuration is not limited thereto, and for example, the vertical direction with respect to the first direction D1 The structure may be formed so as to extend in a direction different from the first direction D1, such as a direction inclined to the center.

  In the above embodiment, the configuration in which the position of the long hole portion 40 is fixed has been described as an example. However, the present invention is not limited to this. For example, a mechanism for moving the portion of the blocking member 21 in which the long hole portion 40 is formed in the first direction D1 or the vertical direction may be provided. Thereby, the error of the attachment position of the fastening member 30 can be adjusted with high precision.

  Further, for example, in the above-described embodiment, the configuration in which the oblong member 40 is provided in the closing member 21 is described as an example of the error adjustment mechanism. However, the present invention is not limited to this. FIG. 9 is a view showing a closing member 21A according to a modification. As shown in FIG. 9, the closing member 21 </ b> A has a deforming portion 50 that deforms in accordance with the positions of the inner surfaces 11 a of the opposing recesses 11 in addition to the long hole portion 40.

  The closing member 21A has a plurality of plate-like members 25 arranged side by side in the first direction D1. The plate-like member 25 includes a plate-like member 25a fixed to the inner surface 11a of one recess 11, a plate-like member 25b fixed to the inner surface 11a of the other recess 11, and two plate-like members in the first direction D1. And a plate-like member 25c disposed between 25a and 25b. The plate-like members 25a and 25b are arranged so as to protrude from the inner surface 11a of the recess 11 into the gap G, respectively.

  The hinge part 51 has a first hinge 51a and a second hinge 51b. The first hinge 51a connects the plate-like member 25a and the plate-like member 25c. The second hinge 51b connects the plate member 25c and the plate member 25b. The plate-like member 25c is connected in a state in which it can be inclined with respect to the first direction D1 in the space portion 13.

  As shown in FIG. 9, when adjacent revetment structures 10 are shifted in the second direction D2, the screw hole portions 12 formed in the inner surfaces 11a of the opposing recesses 11 are shifted in the second direction D2. Arranged. If a flat plate-like closing member is attached in this state, the closing member is inclined with respect to the first direction D1, and a gap is formed between the long hole portion 40 and the round hole portion 41 and each screw hole portion 12. End up. Even if such a gap is formed, the fastening member 30 can be inserted between the long hole portion 40 and the round hole portion 41 and each screw hole portion 12, and the closing member can be fastened. The fastening strength may be weakened.

  On the other hand, for example, as shown in FIG. 9, by deforming the deformable portion 50 in accordance with the position in the second direction D2 of each inner surface 11a of the opposing concave portion 11, the elongated hole portion 40 and the round hole portion 41 It can arrange | position between each screw hole part 12 without a gap. In this case, the fastening member 30 can firmly fasten between the inner surface 11a and the closing member 21A.

  Further, when the deforming portion 50 is deformed, the positional relationship between the plate-like members 25a, 25b, and 25c changes compared to the case where the deforming portion 50 is not deformed. For example, when the round hole 41 and the plate member 25b are fastened, the position of the plate member 25a in the first direction D1 is shifted from the inner surface 11a. Here, since the closing member 21A has the long hole portion 40, the fastening member 30 can be attached to a portion where the long hole portion 40 is formed in the first direction D1. For this reason, when the long hole part 40 and the screw hole part 12 overlap, the fastening member 30 can be fastened easily.

  Moreover, in the state shown in FIG. 9, when an earthquake etc. generate | occur | produce, the position of the revetment structure 10 may change to the 1st direction D1 and the 2nd direction D2. Due to this change, the positions of the inner surfaces 11a of the opposing recesses 11 change, and a force is applied to the closing member 21A. On the other hand, since the closing member 21A has the deforming portion 50, the closing member 21A can be deformed following the positional variation between the inner surfaces 11a. For this reason, damage etc. of blocking member 21A are controlled.

  In the example illustrated in FIG. 9, the configuration in which both the elongated hole portion 40 and the deformable portion 50 are provided has been described. However, the configuration is not limited thereto, and for example, the elongated portion 40 is not provided and the deformable portion 50 is not provided. It may be a configuration in which only the above is provided. In this case, for example, two plate-like members are arranged in the first direction D1 between the first hinge portion 51a and the second hinge portion 51b, and the two plate-like members are connected by a third hinge. Also good. Thereby, the deformation | transformation part 50 can deform | transform into the 2nd direction D2 according to the position of the inner surface 11a of the recessed part 11, and can adjust the position of the 1st direction D1 of the plate-shaped member 25a.

  Moreover, although the example provided with the structure provided with the hinge part 51 as the deformation | transformation part 50 was demonstrated, it is not limited to this. For example, an elastically deformable member may be disposed as the deforming portion 50, or a flexible member may be disposed. FIG. 10 is a view showing a closing member 21B according to a modification. The closing member 21B shown in FIG. 10 is provided with a bellows portion 52 as the deformable portion 50B.

  The closing member 21B has a plurality of plate-like members 26 arranged in the first direction D1. The plate-like member 26 has a plate-like member 26 a that is fixed to the inner surface 11 a of one recess 11 and a plate-like member 26 b that is fixed to the inner surface 11 a of the other recess 11. The plate-like members 26a and 26b are arranged so as to protrude from the inner surface 11a of the recess 11 into the gap G, respectively. The bellows part 52 connects the plate-like member 26a and the plate-like member 26c. The bellows portion 52 can be flexibly deformed in each of the first direction D1 and the second direction D2. Therefore, according to this configuration, the other of the plate-like member 26a and the plate-like member 26b can be freely moved while being fixed to the inner surface 11a. For this reason, it is not necessary to provide the long hole portion 40. In addition, in the example shown in FIG. 10, the structure provided with the long hole part 40 may be sufficient.

  Moreover, in the said embodiment, although the structure provided with the filler 22 so that the space part 13 was filled was mentioned as an example and demonstrated, it is not limited to this. FIG. 11 is a diagram illustrating a joint structure 20C according to a modification. In the joint structure 20 </ b> C shown in FIG. 11, the filler 22 is provided on the bottom portion 13 </ b> B of the space portion 13. Further, in the space portion 13, a hollow portion 13 </ b> A is formed above the filler 22 in the vertical direction. The hollow portion 13A can be formed, for example, by attaching the closing member 21 to the inner surface 11a of the recess 11 to form the space portion 13 and then discharging the seawater in each space portion 13 with a pump or the like. In addition, as the obstruction | occlusion member 21, it is preferable to have the intensity | strength which can endure the water pressure from the sea area B or the object area R side. According to this structure, since the filler 22 is provided in the bottom part 13B of the space part 13, the water shielding in the bottom part 13B is ensured. Moreover, since the inner side of the closing member 21 is supported by the bottom portion 13B, the pressure resistance of the closing member 21 is enhanced. Moreover, since hollow part 13A is formed above the vertical direction of the filler 22 among the space parts 13, the joint structure excellent in construction accuracy can be ensured.

  Moreover, in the said embodiment, although the asphalt mixture etc. were mentioned as an example and demonstrated as the filler 22, it is not limited to this, For example, a vertical impermeable wall may be constructed | assembled. FIG. 12 is a diagram illustrating a joint structure 20D according to a modification. In the joint structure 20 </ b> D illustrated in FIG. 12, vertical water shielding walls 27 and 28 are disposed in the space portion 13. The vertical impermeable wall 27 arranged on the target area R side is, for example, a basic vertical impermeable wall. The vertical impermeable wall 28 disposed on the sea area S side is, for example, a backup vertical impermeable wall. Further, the closing member 21 is used as a mold for preventing leakage of components constituting the vertical impermeable wall, for example. Thus, the joint structure 20 </ b> D can be configured as a vertical impermeable joint structure for a management-type revetment such as the revetment 100, for example.

  Moreover, although the said embodiment demonstrated the example which suppresses the flow of the seawater in the clearance gap G by arrange | positioning the 1st obstruction | occlusion member 21 in the space part 13 in the revetment construction method, it does not limit to this. . FIG. 13 is a diagram illustrating one process of the revetment construction method according to the modification. As shown in FIG. 13, before the first closing member 21 is arranged in the space portion 13, the temporary joint base plate 60 that suppresses the flow of seawater is disposed between the inner surfaces 11 a of the recesses 11 of the adjacent seawall structure 10. You may arrange | position over it.

  The temporary ground plane 60 does not need to have a size that covers the entire area from the sea surface to the seabed ground of the space portion 13. For example, if the temporary surface plate 60 covers the space portion 13 from the sea surface to about half of the depth direction. Good. In the gap G, since the flow on the sea surface T side is relatively stronger than the sea bottom B side, the seawater flow in the gap G can be effectively suppressed by covering the sea surface T and the vicinity in the vertical direction. it can.

  In this case, for example, the closing member 21 can be attached by the following procedure. The following procedure is an example and is not limited to the procedure. First, after disposing the temporary joint base plate 60 in the space portion 13, the diver enters the space portion 13 and fixes the temporary joint base plate 60 to the inner surface 11 a of the concave portion 11 by the fastening member. After the temporary joint base plate 60 is fixed, the first closing member 21 is arranged at a position different from the temporary joint base plate 60, and the diver fastens the closing member 21 with the fastening member 30. After the first closing member 21 is fastened, the diver releases the fastening of the temporary joint base plate 60 and then pulls up the temporary joint base plate 60, and then arranges and fastens the other three closing members 21.

  Note that the temporary joint base plate 60 is not limited to the configuration arranged in the space portion 13. For example, a groove-like insertion portion for inserting the temporary joint plate 60 may be provided in addition to the concave portion 11 on the opposing end surfaces 10a of the adjacent revetment structures 10. Thereby, since it is not necessary to remove the temporary joint baseplate 60, the work burden of a diver is reduced.

Moreover, FIG.14 and FIG.15 is a figure explaining 1 process of the bank protection construction method which concerns on a modification.
When the revetment structure 10 is disposed on the seabed ground B, as shown in FIG. 14, at least one of the adjacent revetment structures 10 may have a blocking member 21 </ b> E attached in advance.

  FIG. 14 shows an arrangement state of the revetment structure 10E to which the closing member 21E is attached. In the revetment structure 10E shown in FIG. 14, for example, blocking members 21E are provided on both the end surface on the sea area S side and the end surface on the target area R side. The closing member 21E can have the same configuration as the closing members 21, 21A, 21B, for example. The closing member 21E is fastened to the end face by a fastening member 29, for example, and is in a so-called cantilever state. In addition, the structure by which the closure member 21E is arrange | positioned only in any one of the end surface by the sea area S side and the end surface by the side of the object area R may be sufficient. Moreover, the structure by which the closure member 21E was previously attached to the inner surface 11a of the recessed part 11 may be sufficient.

  After installing the revetment structure 10E to which the blocking member 21E is fixed, as shown in FIG. 15, the revetment structure 10 is installed next to the revetment structure 10E. By installing the bank protection structure 10, a gap G is formed between the adjacent bank protection structure 10 </ b> E and the bank protection structure 10. Therefore, the revetment structure 10 is installed at a position where the gap G is closed by the closing member 21E. Thereby, since the clearance gap G is obstruct | occluded by the obstruction | occlusion member 21E in the state which installed the revetment structure 10, it can suppress that the flow Q of seawater enters into the clearance gap G. Thereby, it becomes possible to significantly reduce the work load of the diver when installing the closing member in the recess 11.

  In the above description, the case where the revetment structure 10E to which the closing member 21E is fixed is arranged first has been described as an example. However, the present invention is not limited to this, and the revetment structure 10 in which the closing member 21E is not provided. May be installed first, and then the bank protection structure 10E to which the blocking member 21E is fixed may be disposed. Moreover, you may install so that the bank protection structures 10E to which the closure member 21E was fixed may adjoin each other.

  Moreover, in the said embodiment, although the case where the joint structure 20 was used as an example was demonstrated as a structure which closes the clearance gap between the revetment structures 10 arrange | positioned at the closing part 103 which closes the opening part 102, it limits to this. It is not a thing. For example, the joint structure 20 may be used as a configuration that closes a gap between revetment structures such as caissons and L-shaped blocks arranged in the revetment portion 101. Moreover, the joint structure 20 may be used as a structure which plugs between the bank protection structure 10 of the deadline 103 and the bank protection structure arrange | positioned at the bank protection part 101. FIG.

  Moreover, although the said embodiment gave and demonstrated the structure in which the shape of the recessed part 11 provided in the end surface 10a of the revetment structure 10 was formed in the rectangular shape by planar view, it is not limited to this, for example, It may be formed in other polygonal shapes such as a triangular shape, a parallelogram shape, a trapezoidal shape, a pentagonal shape, a circular shape, an elliptical shape, etc., or a shape including a curve, or a combination of these shapes It may be a shape.

B Seabed D1 1st direction D2 2nd direction G Crevice S Sea area T Sea surface 10 Seawall structure 10a End surface 11 Recess 11a Inner surface 12 Screw hole part 13 Space part 13A Hollow part 13B Bottom part 20, 20C, 20D, 20E Joint structure 21, 21A , 21B, 21E Closing member 22 Filler 23 Gap portion 25, 25a, 25b, 25c, 26a, 26b Plate-like member 27, 28 Vertical impermeable wall 29, 30 Fastening member 30a Head part 30b Screw part 40 Elongate part 41 Round Hole part 50, 50B Deformation part 51 Hinge part 51a 1st hinge 51b 2nd hinge 52 Bellows part 60 Temporary joint board 100 Seawall structure 101 Seawall part 102 Opening part 103 Cut-off part

Claims (12)

It is a joint structure that closes between the revetment structures arranged side by side on the seabed ground,
A plurality of the revetment structures have concave portions formed in a belt shape along the vertical direction respectively in the facing portions of the adjacent revetment structures,
Arranged between the inner surfaces of the recesses facing each other so as to close the gap formed between the adjacent bank protection structures, and fastened to the inner surfaces of the recesses by fastening members And a plate-like closing member having an error adjustment mechanism for adjusting an error in the attachment position of the fastening member,
A joint structure comprising: a filler that is disposed so as to fill at least a part of a space surrounded by at least an inner surface of the recess and the closing member, and includes an asphalt mixture.   2. The joint structure according to claim 1, wherein the error adjusting mechanism has a long hole portion that can be inserted into the fastening member and extends in a first direction in which the adjacent seawall structures are arranged.   The joint structure according to claim 2, wherein the elongated hole portion is provided on one end side in the first direction of the closing member.   The said error adjustment mechanism has a deformation | transformation part which deform | transforms in the 2nd direction which cross | intersects the said 1st direction parallel to a horizontal surface according to the position of the inner surfaces where the said closure member is attached among the said recessed parts which oppose. The joint structure according to claim 3. The closing member has a plurality of plate-like members arranged side by side in the first direction,
The joint structure according to claim 4, wherein the deformable portion includes hinge portions that connect the plate-like members adjacent to each other. The closing member has a plurality of plate-like members arranged side by side in the first direction,
The joint structure according to claim 4, wherein the deformable portion includes a bellows portion that connects the adjacent plate-like members. The filler is provided at the bottom of the space,
The joint structure according to any one of claims 1 to 6, wherein a hollow portion is formed above the filler in the vertical direction of the filler.   The joint structure according to any one of claims 1 to 7, wherein a vertical impermeable wall is provided in the space portion. A plurality of revetment structures arranged side by side on the seabed ground, each having a concave portion formed in a band shape along the vertical direction at the opposing portion;
The revetment structure provided with the joint structure as described in any one of Claims 1-8 which obstruct | occludes between the said adjacent revetment structures. A revetment construction method for closing a space between adjacent revetment structures arranged side by side on the seabed ground,
A plurality of the revetment structures have concave portions formed in a belt shape along the vertical direction respectively in the facing portions of the adjacent revetment structures,
A plate-shaped closing member having an error adjusting mechanism for adjusting an error in the attachment position of the fastening member so as to close a gap formed between the adjacent revetment structures is provided on the recesses of the respective revetment structures. A step of straddling between the inner surfaces;
Fixing the closing member to the inner surface of the recess of each revetment structure by the fastening member;
Arranging a filler containing an asphalt mixture in the portion so as to fill at least a part of the space surrounded by at least the inner surface of the recess and the blocking member.   The said bank protection structure is a bank protection construction method of Claim 10 arrange | positioned in the opening part which navigates a ship among bank protection structures.   When arranging the revetment structure on the seabed ground, the clogging member is pre-attached to at least one of the adjacent revetment structures, and the gap is blocked by the pre-attached clogging member. The revetment construction method according to claim 10 or 11, wherein the revetment structure adjacent to the position to be placed is arranged.

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