Installation method for slope leveling components

Abstract

This invention provides a method for attaching slope leveling components that can improve the construction efficiency of slope leveling. [Solution] The method includes: a placement step of placing a guide member having a stepped surface corresponding to the slope angle of the foundation rubble mound on the ground with the stepped surface facing upward; a positioning step of positioning the slope leveling member by bringing the plurality of lower end surfaces of the slope leveling member into contact with the stepped surface of the guide member with respect to the guide member placed in the placement step; and a connecting step of lowering a leveling weight from above onto the slope leveling member after it has been positioned in the positioning step, thereby connecting the slope leveling member to the lower end of the leveling weight.

Description

Technical Field

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[0001] The present disclosure relates to a method for attaching a slope leveling member.

Background Art

[0002] As an existing technique used for leveling the slope of a foundation riprap mound in water, there is a leveling weight. In this technique, a slope leveling member is attached to the lower end of the weight body for leveling the top end surface (flat surface) of the foundation riprap mound and used. The slope leveling member has an inclined surface on the bottom surface of the member according to the inclination angle of the slope to be formed, and is fixed to the weight body with bolts on the upper surface of the member. By dropping the weight with the slope leveling member attached to the weight body onto the riprap mound by a crane ship, slope leveling is performed (for example, Patent Document 1).

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In the case of the method of leveling a slope with the conventional weight described in Patent Document 1, when the weight is dropped onto the foundation riprap mound and the slope leveling member of the weight touches the bottom of the riprap, it is likely to slide downwards due to the influence of the inclined surface at the lower end of the slope leveling member. Therefore, in the conventional method, the efficiency for performing the intended leveling on the slope may decrease.

[0005] An object of the present disclosure is to provide a method for attaching a slope leveling member that can improve the construction efficiency of slope leveling.

Means for Solving the Problems

[0006] A method for attaching a slope leveling member according to one aspect of an embodiment of the present invention is an attachment method for attaching a slope leveling member to the lower end of a leveling weight for leveling the surface of a foundation rubble mound underwater, wherein the lower end of the slope leveling member is provided with a plurality of lower end surfaces formed in a stepped manner according to the inclination angle of the slope of the foundation rubble mound, the normal direction of the plurality of lower end surfaces is the same as the direction in which the leveling weight falls, and the method includes: a placement step of placing a guide member having stepped surfaces according to the inclination angle on the ground with the stepped surfaces facing upward; a positioning step of positioning the slope leveling member by bringing the plurality of lower end surfaces of the slope leveling member into contact with the stepped surfaces of the guide member with respect to the guide member placed in the placement step; and a connecting step of lowering the leveling weight from above with respect to the slope leveling member after it has been positioned in the positioning step, thereby connecting the slope leveling member to the lower end of the leveling weight. [Effects of the Invention]

[0007] According to this disclosure, it is possible to provide a method for attaching slope leveling members that can improve the construction efficiency of slope leveling. [Brief explanation of the drawing]

[0008] [Figure 1] A diagram showing an example of the overall configuration of a rubble mound leveling device according to the embodiment. [Figure 2] This figure shows an example of the schematic configuration of a slope leveling member according to the first embodiment. [Figure 3] This figure shows an example of the behavior when using a conventional slope leveling member as a comparative example. [Figure 4] This figure shows an example of the behavior when using the slope leveling member according to the first embodiment. [Figure 5] This figure shows the first step of the method for attaching the slope leveling member of the first embodiment. [Figure 6] This figure shows the second stage of the method for attaching the slope leveling member of the first embodiment. [Figure 7] This figure shows the third stage of the method for attaching the slope leveling member of the first embodiment. [Figure 8] A diagram showing examples of other inclination angles for slope leveling members. [Figure 9] This figure shows an example of the schematic configuration of a slope leveling member according to the second embodiment. [Figure 10] This figure shows the second stage of the method for attaching the slope leveling member of the second embodiment. [Figure 11] This figure shows the third stage of the method for attaching the slope leveling member of the second embodiment. [Figure 12] This figure shows the fourth step in the method for attaching the slope leveling member of the second embodiment. [Figure 13] A diagram showing examples of other inclination angles for slope leveling members. [Modes for carrying out the invention]

[0009] The embodiments will be described below with reference to the attached drawings. To facilitate understanding of the explanation, the same reference numerals are used for identical components in each drawing whenever possible, and redundant explanations are omitted.

[0010] [First Embodiment] The first embodiment will be described with reference to Figures 1 to 8.

[0011] Figure 1 shows an example of the overall configuration of the rubble mound leveling device 1 according to the embodiment. As shown in Figure 1, a base rubble mound 6 has been formed in advance by dumping a large number of rubble stones into the water 5 and accumulating them on the seabed 8. The rubble mound leveling device 1 is basically a device for leveling the upper top surface 6A of this base rubble mound 6.

[0012] The leveling weight device 1 for the rubble mound includes a leveling weight 4 that is suspended from a wire 7 of a crane 3 on a crane ship 2 so as to be vertically movable. The leveling weight 4 is formed in a long shape, and one end 4A in the longitudinal direction is connected to the wire 7, and thereby the other end 4B is installed facing vertically downward. Hereinafter, the end 4B of the leveling weight 4 may also be referred to as the "lower end 4B". A plane is formed at the lower end 4B with the longitudinal direction of the leveling weight 4 as the normal direction. As shown by arrow A, the leveling weight device 1 for the rubble mound operates the crane 3 to drop the leveling weight 4 from above downward toward the foundation rubble mound 6 in the water 5. Thereby, the lower end 4B of the leveling weight 4 presses the top surface 6A of the foundation rubble mound 6, and the top surface 6A can be leveled into a planar shape.

[0013] The leveling weight device 1 for the rubble mound in this embodiment further includes a slope leveling member 10. The slope leveling member 10 is attached to the lower end 4B of the leveling weight 4 and used. As shown in FIG. 1, a slope 6B is formed at the edge of the foundation rubble mound 6 (the portion to the left of the top surface 6A in FIG. 1) that continuously connects the top surface 6A and the water bottom 8 in an inclined manner. The slope leveling member 10 presses the slope 6B of the foundation rubble mound 6 and levels the slope 6B into an inclined surface shape by dropping it from above downward onto the slope 6B of the foundation rubble mound 6 as shown by arrow A in FIG. 1 in a state of being attached to the lower end 4B of the leveling weight 4.

[0014] Referring to FIG. 2 in addition to FIG. 1, the configuration of the slope leveling member 10 according to this embodiment will be described. FIG. 2 is a diagram showing an example of the schematic configuration of the slope leveling member 10 according to the first embodiment. FIG. 2 is also an enlarged view of the portion including the slope leveling member 10 in FIG. 1.

[0015] As shown in FIG. 2, a plurality of lower end surfaces 11B, 12B, 13B, 14B, 15B are provided at the lower end of the slope leveling member 10, which are formed in a stepped shape according to the inclination angle of the slope 6B of the foundation rubble mound 6. The normal directions of the plurality of lower end surfaces 11B to 15B are the same as the dropping direction of the leveling weight 4 shown by arrow A in FIG. 1.

[0016] Note that the "same" used here is not limited to being exactly in the same direction, and a deviation that does not impair the effects of the embodiment is allowed. That is, "same" may include substantially the same. For example, even if the falling direction of the leveling weight 4 and the normal directions of the plurality of lower end surfaces 11B to 15B of the slope leveling member 10 are not exactly in the same direction as each other, it means that they can be treated as being in the same direction as each other within the range allowed in manufacturing.

[0017] Also, the stepped plurality of lower end surfaces 11B to 15B of the slope leveling member 10 according to the first embodiment are formed by a combination of a plurality of blocks. In the examples of FIGS. 1 and 2, five blocks 11, 12, 13, 14, and 15 are combined. Each of the five blocks 11 to 15 is, for example, a plate-shaped member, the left-right direction of the paper surface in FIGS. 1 and 2 is the thickness portion, and the main surfaces are arranged along the depth direction of the paper surface. The main surfaces of the respective blocks 11 to 15 are in surface contact with each other and laminated in the thickness direction in the left-right direction of the paper surface. The vertical dimensions of the respective blocks 11 to 15 are formed to have different lengths.

[0018] In the example of FIG. 2, they are arranged from the right side to the left side of the paper surface in the order of blocks 11, 12, 13, 14, and 15. The height positions of the upper ends 11A to 15A of the respective blocks 11 to 15 are aligned, and the respective blocks 11 to 15 are each connected to the lower end 4B of the leveling weight 4 at the upper end portion. The vertical dimensions of the respective blocks 11 to 15 are formed to gradually increase in this order. As a result, in the state where the respective blocks 11 to 15 are connected to the lower end 4B of the leveling weight 4, the lower end surfaces 11B to 15B of the respective blocks 11 to 15 form a stepped shape so as to protrude step by step in this order.

[0019] Here, the plane of the lower end 4B of the leveling weight 4 is formed in a rectangular shape, for example, and in Figures 1 and 2, only one side of the rectangle is shown. For example, if the plane of the lower end 4B is square, the width dimension in the depth direction of the main surface of each block 11 to 15 is formed to a length that fits within the length of one side of this square. Also, the thickness dimension of each block 11 to 15 in the left-right direction of the paper is about one-fifth of the width dimension, and the total dimension when each block 11 to 15 is stacked in the thickness direction is formed to a length that fits within the length of one side of the square of the plane of the lower end 4B.

[0020] In the example shown in Figure 2, the vertical dimensions of each block 11-15 are formed such that the ratio of height to base is 1:2 when the line segment connecting the lower end faces 11B-15B is considered as the hypotenuse of a right-angled triangle. This ratio can be appropriately set according to the slope angle of the slope 6B to be leveled.

[0021] Here, the effects of the slope leveling member 10 according to the first embodiment will be explained with reference to Figures 3 and 4. Figure 3 is a diagram showing an example of the behavior when using a conventional slope leveling member 50 as a comparative example. Figure 4 is a diagram showing an example of the behavior when using the slope leveling member 10 according to the first embodiment.

[0022] As shown in Figure 3, in the conventional slope leveling member 50, an inclined surface 50A is provided at the lower end. The inclination angle of this inclined surface 50A corresponds to the inclination angle of the slope 6B to be leveled. As shown by arrow A in Figure 3, as explained earlier, the leveling weight 4 is dropped from above downwards, causing the slope leveling member 50 to abut against the slope 6B and settle on the rubble on the slope 6B. At this time, since the inclined surface 50A at the lower end of the slope leveling member 50 is a plane corresponding to the inclination angle of the slope 6B, the slope leveling member 50 receives an external force along the inclination direction of the slope 6B due to the reaction force received by the inclined surface 50A from the slope 6B, as shown by arrow B in Figure 3. As a result, as shown by the dotted line in Figure 3, the slope leveling member 50 and the leveling weight 4 slide relatively far down the slope 6B along the inclination direction of the slope 6B.

[0023] On the other hand, as shown in Figure 4, in the slope leveling member 10 of this embodiment, the bottom surface is stepped, so as shown in Figure 2, the lower end surfaces 11B to 15B of the slope leveling member 10 are not inclined and the normal direction is the same as the direction of fall A. Therefore, when the slope leveling member 10 hits the slope 6B and settles on the rubble on the slope 6B, as shown by arrow C in Figure 4, the magnitude of the component of the reaction force received by the slope leveling member 10 from the slope 6B in the direction of the slope 6B is relatively smaller than the external force B in the comparative example in Figure 3. As a result, as shown by the dotted line in Figure 4, the amount by which the slope leveling member 10 and the leveling weight 4 slide down the slope 6B along the direction of the slope 6B is relatively smaller than in the case of Figure 3, making it less likely for them to slide down the slope 6B.

[0024] As described above, in the slope leveling member 10 according to the first embodiment, a plurality of lower end surfaces 11B to 15B are provided at the lower end of the member 10, which are formed in a stepped manner according to the inclination angle of the slope 6B of the foundation rubble mound 6. Furthermore, the plurality of lower end surfaces 11B to 15B are planes whose normal direction is the same as the direction A in which the leveling weight 4 falls. With these configurations, when the bottom surface of the slope leveling member 10 settles on the rubble of the slope 6B, the plurality of planar lower end surfaces 11B to 15B of the bottom surface are supported by the rubble, thereby suppressing the slope leveling member 10 from sliding down the slope 6B. As a result, the slope leveling member 10 can be reliably settled on a desired area of ​​the slope 6B directly below the leveling weight 4, and after settling, this desired area of ​​the slope 6B can be reliably pressed and leveled, thereby improving the construction efficiency of slope leveling.

[0025] Next, with reference to Figures 5 to 7, an example of how to attach the slope leveling member 10 to the leveling weight 4 according to the first embodiment will be described. Figure 5 is a diagram showing the first step of the method for attaching the slope leveling member 10 according to the first embodiment. Figure 6 is a diagram showing the second step of the method for attaching the slope leveling member 10 according to the first embodiment. Figure 7 is a diagram showing the third step of the method for attaching the slope leveling member 10 according to the first embodiment.

[0026] In the first stage shown in Figure 5, a guide member 30 having stepped surfaces 31, 32, 33, 34, and 35 corresponding to the desired inclination angle of the lower end surface of the slope leveling member 10 is placed on the ground 40 with the stepped surfaces 31 to 35 facing upward (placement step). The ground 40 is, for example, the deck of a crane ship 2.

[0027] In the second stage shown in Figure 6, the slope leveling member 10 is positioned by bringing its multiple lower end surfaces 11B to 15B into contact with the stepped surfaces 31 to 35 of the guide member 30, respectively, relative to the guide member 30 that was placed in the placement step (positioning step). Here, each block 11 to 15 is placed on the stepped surfaces 31 to 35 of the guide member 30. This aligns the height positions of the upper ends 11A to 15A of each block 11 to 15. With the slope leveling member 10 in this state, the leveling weight 4 is brought closer to the slope leveling member 10 from above, as indicated by arrow D in Figure 6.

[0028] In the third stage shown in Figure 7, the leveling weight 4 is lowered from above onto the slope leveling member 10, which has been positioned in the positioning step, and the slope leveling member 10 is connected to the lower end 4B of the leveling weight 4 (connecting step). Any method can be applied to connect each block 11 to 15 to the leveling weight 4, as long as it is a detachable method. For example, this could be done by bolting, using a combination of pins and holes or hooks to fasten, or by welding a pin provided on the upper end of the block to the lower end 4B of the leveling weight 4.

[0029] As explained with reference to Figures 5 to 7, according to the method of attaching the slope leveling member 10 to the leveling weight 4 according to the first embodiment, the slope leveling member 10 can be attached to the leveling weight 4 by only vertical movement while the leveling weight 4 is suspended by the crane 3. Conventionally, when attaching a slope leveling member to a leveling weight, it is necessary to lay the leveling weight 4 on the ground 40 and attach the slope leveling member from the horizontal direction. For this reason, it is necessary to make the area of ​​the ground 40 required for attachment larger by the length of the elongated leveling weight 4. In contrast, in this embodiment, by using the guide member 30, the slope leveling member 10 can be attached while the leveling weight 4 is suspended in the vertical direction, so the area of ​​the ground 40 required for attachment can be limited to the size of the footprint of the guide member 30. Therefore, according to the method of attaching the slope leveling member 10 to the leveling weight 4 as embodied in the first embodiment, the space required for attaching the slope leveling member 10 can be reduced.

[0030] Figure 8 shows examples of other inclination angles for the slope leveling member 10. Figure 8(A) shows an example of a combination of blocks where the ratio of height to base is 1:1.5 when the line segment connecting the stepped lower end faces is considered as the hypotenuse of a right triangle. Figure 8(B) shows an example of a combination of blocks where the ratio of height to base is 1:1.2.

[0031] In Figure 8(A), blocks 11, 16, 17, 15, and 18 are arranged in this order from right to left on the page. The height of the upper end of each block 11, 16, 17, 15, and 18 is aligned, and each block 11, 16, 17, 15, and 18 is connected to the lower end 4B of the leveling weight 4 at its upper end. The vertical dimensions of each block 11, 16, 17, 15, and 18 are formed to increase in length in this order. As a result, when each block 11, 16, 17, 15, and 18 is connected to the lower end 4B of the leveling weight 4, the lower end surfaces of each block 11, 16, 17, 15, and 18 form a stepped shape, protruding in this order in stages. Furthermore, the vertical dimensions of each block 11, 16, 17, 15, and 18 are formed such that, when the line segment connecting the lower ends of each block 11, 16, 17, 15, and 18 is considered as the hypotenuse of a right-angled triangle, the ratio of height to base is 1:1.5.

[0032] In Figure 8(B), blocks 11, 19, 20, 18, and 21 are arranged in this order from right to left in the drawing. The height of the upper end of each block 11, 19, 20, 18, and 21 is aligned, and each block 11, 19, 20, 18, and 21 is connected to the lower end 4B of the leveling weight 4 at its upper end. The vertical dimensions of each block 11, 19, 20, 18, and 21 are formed to increase in length in this order. As a result, when each block 11, 19, 20, 18, and 21 is connected to the lower end 4B of the leveling weight 4, the lower end surfaces of each block 11, 19, 20, 18, and 21 form a stepped shape, protruding in this order in stages. Furthermore, the vertical dimensions of each block 11, 19, 20, 18, and 21 are formed such that, when the line segment connecting the lower ends of each block 11, 19, 20, 18, and 21 is considered as the hypotenuse of a right-angled triangle, the ratio of height to base is 1:1.2.

[0033] Here, the blocks 11 with vertical hatching in Figures 2 and 8 can be reused in three types of combinations: the combination of blocks where the height-to-base ratio is 1:2 as shown in Figure 2, the combination of blocks where the height-to-base ratio is 1:1.5 as shown in Figure 8(A), and the combination of blocks where the height-to-base ratio is 1:1.2 as shown in Figure 8(B). In addition, the blocks 15 with horizontal hatching in Figures 2 and 8 can be reused in two types of combinations: the combination of blocks where the height-to-base ratio is 1:2 as shown in Figure 2, and the combination of blocks where the height-to-base ratio is 1:1.5 as shown in Figure 8(A). Furthermore, block 18, which has a dot pattern in Figure 8, can be reused in two types of combinations: the combination of blocks where the height-to-base ratio is 1:1.5 as shown in Figure 8(A), and the combination of blocks where the height-to-base ratio is 1:1.2 as shown in Figure 8(B).

[0034] In the slope leveling member 10 according to the first embodiment, the stepped lower end surfaces of the slope leveling member 10 are formed by combining multiple blocks. With this configuration, the inclination angle of the lower end surface of the slope leveling member 10 can be easily adjusted to match the desired slope angle of the slope 6B by appropriately combining blocks of different vertical dimensions. This makes it possible to perform slope leveling work that can accommodate slopes 6B with various inclination angles, thereby improving the versatility of the slope leveling member 10.

[0035] Furthermore, in the slope leveling member 10 of the first embodiment, the stepped lower end surfaces of the slope leveling member 10 are formed by a combination of multiple blocks. This allows some blocks to be reused, for example, as shown in Figures 2 and 8, blocks 11, 15, and 18, when the lower end surfaces are set to multiple inclination angles. As a result, the number of blocks used can be reduced for the desired inclination angles, thereby reducing the manufacturing cost of the slope leveling member 10.

[0036] In addition, the slope leveling member 10 of the first embodiment may be configured such that the stepped lower end surfaces of the slope leveling member 10 are formed from a single member, rather than being a combination of multiple blocks. Even in this configuration, the method of attaching it to the leveling weight 4 can be carried out using the same procedure as in the examples shown in Figures 5 to 7. In this configuration, since a slope leveling member 10 is prepared individually for each inclination angle of the lower end surface, the selection of the member to be used during slope leveling construction can be made quickly.

[0037] [Second Embodiment] A second embodiment will be described with reference to Figures 9 to 13.

[0038] Figure 9 shows an example of the schematic configuration of the slope leveling member 100 according to the second embodiment. The schematic configuration in Figure 9 corresponds to that in Figure 2.

[0039] As shown in Figure 9, the stepped lower end surfaces of the slope leveling member 100 according to the second embodiment can change their relative positions. The slope leveling member 100 has a base 110 and a plurality of blocks 111, 112, 113, 114, and 115. The base 110 is connected to the lower end 4B of the leveling weight 4.

[0040] In the example shown in Figure 9, a configuration is illustrated that includes five blocks 111, 112, 113, 114, and 115 as multiple blocks. Each of the five blocks 111 to 115 is, for example, a plate-shaped member, similar to blocks 11 to 15 in the first embodiment. In Figure 9, the left-right direction of the paper represents the thickness, and the main surface is arranged along the depth direction of the paper. Each of the blocks 111 to 115 is arranged in the thickness direction in the left-right direction of the paper with the main surfaces facing each other.

[0041] Multiple blocks 111 to 115 are installed so as to be slidable relative to the base 110 along the extending direction (falling direction A) of the leveling weight 4, as indicated by arrows E1 to E5. The vertical dimensions of the multiple blocks 111 to 115 are, for example, formed to be the same length, and the height position of the lower end faces 111B to 115B of each block can be changed by adjusting their relative position to the base 110. The lower end faces 111B to 115B of the multiple blocks 111 to 115 form a set of stepped lower end faces of the slope leveling member 100.

[0042] Here, similar to the first embodiment, the plane of the lower end 4B of the leveling weight 4 is formed in a rectangular shape, for example, and in Figure 9 only one side of the rectangular shape of the lower end 4B is shown. Therefore, the base 110 connected to this lower end 4B also has an upper end surface that is formed in a rectangular shape with substantially the same shape and area as the lower end 4B, and in Figure 9 only one side of the rectangular shape of the upper end surface of the base 110 is shown. Furthermore, the overall shape of the base 110 is a rectangular prism shape having four sides that extend vertically downward from the four sides of the rectangular shape of the upper end surface. In Figure 9 only one side of the rectangular prism shape of the base 110 is shown.

[0043] For example, if the plane of the lower end 4B and the upper end surface of the base 110 are square, the width dimension in the depth direction of the main surface of each block 111 to 115 is formed to a length that fits within the length of one side of this square. Also, the thickness dimension of each block 111 to 115 in the left-right direction of the paper is about one-fifth of the width dimension, and the total dimension of each block 111 to 115 arranged in the thickness direction is formed to fit within the length of one side of this square. Furthermore, in the second embodiment, a gap is provided in the thickness direction of each block 111 to 115 to the extent that each block 111 to 115 can slide relative to the base 110.

[0044] In the slope leveling member 100 of the second embodiment, the relative positions of the multiple stepped lower end surfaces 111B to 115B can be changed. This allows the inclination angle of the stepped lower end surfaces 111B to 115B to be arbitrarily adjusted using a single slope leveling member 100, thus enabling it to accommodate various slope angles of different types of slopes 6B and improving versatility.

[0045] Furthermore, in the slope leveling member 100 of the second embodiment, multiple blocks 111 to 115 can be slid along the extending direction of the leveling weight 4 relative to the base 110, thereby forming multiple stepped lower end surfaces 111B to 115B of the slope leveling member 100. With this configuration, the normal direction of the lower end surfaces 111B to 115B of each block 111 to 115 can be maintained in the same direction as the falling direction A of the leveling weight 4, while more reliably forming a stepped shape with any desired inclination angle.

[0046] Furthermore, the vertical dimension of the base 110 is preferably such that, for example, when multiple blocks 111 to 115 slide to their uppermost position relative to the base 110, their lower end faces 111B to 115B are housed inside the base 110. This makes it possible to miniaturize the slope leveling member 100 when not in use or during storage, and reduces the required storage space.

[0047] In the example in Figure 9, similar to the example in Figure 2, the height position of each block is adjusted so that the ratio of height to base is 1:2 when the line segment connecting the lower surfaces 111B to 115B is considered as the hypotenuse of a right triangle. This ratio can be appropriately set according to the slope angle of the slope 6B to be leveled.

[0048] Furthermore, the slope leveling member 100 includes a holding part that maintains the relative positions of the multiple blocks 111 to 115. In the example shown in Figure 9, an example of the holding part includes through holes provided in each of the multiple blocks 111 to 115 and a rod 116. At least one through hole is provided in each of the multiple blocks 111 to 115 along the extending direction, and each is formed along the direction in which the multiple blocks 111 to 115 are lined up.

[0049] In the example shown in Figure 9, block 111 has one through hole 121. Block 112 has three through holes 122A, 122B, and 122C arranged in order from bottom to top. Block 113 has three through holes 123A, 123B, and 123C arranged in order from bottom to top. Block 114 has three through holes 124A, 124B, and 124C arranged in order from bottom to top. Block 115 has three through holes 125A, 125B, and 125C arranged in order from bottom to top.

[0050] In the slope leveling member 100 of the second embodiment, the rod 116 can be inserted into any one through-hole for each of the multiple blocks 111 to 115, and then inserted into all the through-holes of the multiple blocks 111 to 115, thereby maintaining the relative positions of the multiple blocks 111 to 115. With this configuration, the relative positions of the multiple blocks 111 to 115 can be easily maintained simply by inserting the rod 116 into each of the through-holes of the multiple blocks 111 to 115, and the adjustment of the step shape of each block can be carried out efficiently.

[0051] In the example shown in Figure 9, a single rod 116 is inserted through the through-hole 121 of block 111, the through-hole 122A of block 112, the through-hole 123A of block 113, the through-hole 124A of block 114, and the through-hole 125A of block 115. This allows the relative positions of each block 111 to 115 to be maintained such that the ratio of height to base is 1:2 when the line segment connecting the lower end faces 111B to 115B is considered the hypotenuse of a right-angled triangle.

[0052] Next, with reference to Figures 5, 10, and 12, an example of how to attach the slope leveling member 100 to the leveling weight 4 according to the second embodiment will be described. Figure 10 is a diagram showing the second stage of the method for attaching the slope leveling member 100 according to the second embodiment. Figure 11 is a diagram showing the third stage of the method for attaching the slope leveling member 100 according to the second embodiment. Figure 12 is a diagram showing the fourth stage of the method for attaching the slope leveling member 100 according to the second embodiment.

[0053] The first step is the same as the first embodiment described with reference to Figure 5, in which the guide member 30 is placed on the ground 40 with the stair surfaces 31-35 facing upward (placement step).

[0054] In the second stage shown in Figure 10, the slope leveling member 100 is lowered from above onto the guide member 30 that was placed in the placement step, so that the lower end surfaces 111B to 115B of the multiple blocks 111 to 115 come into contact with the stepped surfaces 31 to 35 of the guide member 30. As a result, as shown by arrows F1 to F5 in Figure 10, each block 111 to 115 moves upward individually due to the reaction force received from the stepped surfaces 31 to 35. As a result, the positions of the multiple stepped lower end surfaces 111B to 115B of the slope leveling member 100 can be positioned collectively (positioning step). In the example in Figure 10, each block 111 to 115 is positioned so that the through hole 121 of block 111, the through hole 122A of block 112, the through hole 123A of block 113, the through hole 124A of block 114, and the through hole 125A of block 115 are at the same height.

[0055] In the third stage shown in Figure 11, the relative positions of the multiple blocks 111 to 115, which were positioned in the positioning step, are held by a rod 116 acting as a holding part (holding step). In the example in Figure 11, a single rod 116 is inserted from the horizontal direction, which is the extension direction of each hole, as indicated by arrow G, through the through hole 121 of block 111, the through hole 122A of block 112, the through hole 123A of block 113, the through hole 124A of block 114, and the through hole 125A of block 115, which are all aligned at the same height. This holds the relative positions of the multiple blocks 111 to 115. With respect to the base 110 of the slope leveling member 100 in this state, the leveling weight 4 is brought closer to the base 110 from above, as indicated by arrow H in Figure 11.

[0056] In the fourth stage shown in Figure 12, the leveling weight 4 is lowered from above onto the slope leveling member 100, which has been held in the holding step, and the base 110 of the slope leveling member 100 is connected to the lower end 4B of the leveling weight 4 (connecting step). As with the first embodiment, any method that allows for easy attachment and detachment can be used to connect the base 110 to the leveling weight 4.

[0057] As explained with reference to Figures 5 and 10-12, according to the method of attaching the slope leveling member 100 to the leveling weight 4 according to the second embodiment, similar to the first embodiment, the slope leveling member 100 can be attached with the leveling weight 4 suspended vertically by using the guide member 30, so the area of ​​the ground 40 required for attachment can be limited to the size of the footprint of the guide member 30. Therefore, according to the method of attaching the slope leveling member 100 to the leveling weight 4 according to the second embodiment, the space required for attaching the slope leveling member 100 can be reduced.

[0058] Figure 13 shows examples of other inclination angles for the slope leveling member 100. Figure 13(A) shows an example of a combination of height positions for each block where the ratio of height to base is 1:1.5, when the line segment connecting the stepped lower end faces is considered as the hypotenuse of a right triangle. Figure 13(B) shows an example of a combination of height positions for each block where the ratio of height to base is 1:1.2.

[0059] In Figure 13(A), blocks 111 to 115 are positioned such that the through-holes 121 in block 111, 122B in block 112, 123B in block 113, 124B in block 114, and 125B in block 115 are at the same height. A rod 116 is then inserted through these through-holes, and the height of each block 111 to 115 is maintained such that the ratio of height to base is 1:1.5 when the line segment connecting the stepped lower end faces 111B to 115B is considered the hypotenuse of a right triangle.

[0060] In Figure 13(B), blocks 111 to 115 are positioned such that the through-holes 121 in block 111, 122C in block 112, 123C in block 113, 124C in block 114, and 125C in block 115 are at the same height. A rod 116 is then inserted through these through-holes, and the height of each block 111 to 115 is maintained such that the ratio of height to base is 1:1.2 when the line segment connecting the stepped lower end faces 111B to 115B is considered the hypotenuse of a right triangle.

[0061] Furthermore, in the slope leveling member 100 according to the second embodiment, the relative positions of the lower end faces 111B to 115B of the multiple blocks 111 to 115 can be changed. Therefore, the sliding positions of the lower end faces 111B to 115B can be aligned to form a single plane with the lower end faces 111B to 115B as a whole. For such position adjustment, for example, through holes can be provided at the same vertical position in each block 111 to 115, and a rod 116 can be inserted through these through holes.

[0062] By treating each of the lower end surfaces 111B to 115B of the slope leveling member 100 as a single plane, the slope leveling member 100 can be used not only for leveling the slope 6B of the foundation rubble mound 6 but also for leveling the top surface 6A. This makes it possible to level both the top surface 6A and the slope 6B of the foundation rubble mound 6 using a single slope leveling member 100, eliminating the need to attach and detach the slope leveling member 100 from the lower end 4B of the leveling weight 4, regardless of whether the surface to be leveled is the top surface 6A or the slope 6B. Therefore, according to the slope leveling member 100 of the second embodiment, the construction efficiency of the overall leveling work of the foundation rubble mound 6 can be improved.

[0063] The embodiments have been described above with reference to specific examples. However, this disclosure is not limited to these specific examples. Modifications made to these specific examples by those skilled in the art are also included within the scope of this disclosure, as long as they retain the features of this disclosure. The elements, their arrangement, conditions, shapes, etc., of each of the aforementioned specific examples are not limited to those illustrated and can be modified as appropriate. The elements of each of the aforementioned specific examples can be combined in different ways as appropriate, as long as no technical inconsistencies arise. [Explanation of Symbols]

[0064] 1. Stone mound leveling device 4. Leveling weights 6. Foundation rubble mound 6A Top surface 6B Slope 10, 100 Slope leveling member 11B, 12B, 13B, 14B, 15B, 111B, 112B, 113B, 114B, 115B Bottom end surface Blocks 11, 12, 13, 14, 15, 111, 112, 113, 114, 115 110 Base 116 Bar material (holding part)

Claims

1. An installation method for attaching a slope leveling member to the lower end of a leveling weight used to level the surface of a foundation rubble mound underwater, The lower end of the slope leveling member is provided with a plurality of lower end surfaces formed in a stepped manner according to the slope angle of the foundation rubble mound. The normal direction of the plurality of lower end surfaces is the same as the direction in which the leveling weight falls. A mounting step for placing a guide member having a stair surface corresponding to the aforementioned inclination angle on the ground with the stair surface facing upward, A positioning step in which the slope leveling member is positioned by bringing the plurality of lower end surfaces of the slope leveling member into contact with the stepped surface of the guide member with respect to the guide member placed in the above-mentioned placement step, A connecting step is performed to connect the slope leveling member to the lower end of the leveling weight by lowering the leveling weight from above onto the slope leveling member that has been positioned in the positioning step, A method for installing slope leveling members, including [specific components].

2. The slope leveling member comprises a base connected to the lower end of the leveling weight, a plurality of blocks slidable relative to the base along the extending direction of the leveling weight, and a holding portion that holds the relative positions of the plurality of blocks, wherein the lower end surfaces of the plurality of blocks form the stepped plurality of lower end surfaces of the slope leveling member. The positioning step involves lowering the slope leveling member from above relative to the guide member placed in the positioning step, thereby bringing the lower end surfaces of the plurality of blocks into contact with the stepped surface of the guide member, and thereby positioning the stepped lower end surfaces of the slope leveling member all at once. The holding step includes a holding step in which the relative positions of the plurality of blocks positioned in the positioning step are held by the holding part, The connecting step involves lowering the leveling weight from above onto the slope leveling member that has been held in the holding step, and connecting the slope leveling member to the lower end of the leveling weight. A method for attaching a slope leveling member as described in claim 1.

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