JP2005105780A - Installation method and moving device for concrete block - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an installation method and a moving device for a concrete block capable of installing the concrete block by pulling sideways without changing the shape of a bottom plate and also capable of increasing installation performance by accurately disposing rails. <P>SOLUTION: This installation method comprises a step for installing recessed rails 2 on a rail installation frame 4 installed on a foundation concrete through spacers and disposing rolling elements 3 on the rails 2, a step for placing the concrete block 21 on the rolling elements 3, and a step for installing the concrete block 21 at a specified position by towing it. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a method for installing a precast concrete block, and more particularly to a horizontal pulling method and a moving device for moving and installing a block along a rail.

  Conventionally, a box culvert, which is a precast concrete block, is laid in a plurality to form a culvert such as a sewer, a common ditch, and an underground passage. In such laying work of box culverts, excavation cannot be performed larger than the width of box culverts depending on the conditions of the construction site such as narrow road width, dense houses on both sides of the construction, or under the bridge. In such a case, a large machine such as a crane cannot be used to move the box culvert.

As shown in FIG. 8, as an installation method of the box culvert in such a construction site, an H-section steel 102 is laid on the basic concrete 105, and a bearing ball 103 is disposed in a recess 102 a of the H-section steel 102, so The box culvert 101 is loaded onto the H-shaped steel 102 by a crane, and the box culvert 101 is horizontally pulled and installed using the rolling contact between the protrusion 104 provided on the lower surface 101a of the box culvert 101 and the bearing ball 103. A box bearing method that is installed and fixed at a position has been proposed (for example, Patent Document 1).
JP2000-293938

  However, in the box bearing method disclosed in the above-mentioned Patent Document 1, the protrusion 104 must be provided on the lower surface 101a of the bottom plate of the box culvert 101 to be installed, which requires a special formwork, and the manufacturing cost is low. There was a problem of getting higher.

  By the way, in this box bearing construction method, the installation position of the box culvert is determined by the rail. Therefore, in order to connect the concrete blocks well, it is important to manage the height difference in the rail arrangement.

  Therefore, in view of the above-described problems of the prior art, the present invention can be installed horizontally without changing the shape of the bottom plate, and further, the installation is improved by arranging the rails with high accuracy. An object of the present invention is to provide a concrete block installation method and a moving device that can be used.

  In order to achieve the above object, the concrete block installation method of the present invention includes a step of disposing a concave rail on a pedestal installed in foundation concrete, disposing a rolling element on the rail, And a step of placing the concrete block on the surface and a step of installing the concrete block at a predetermined position.

  Here, it is good also as using the concrete block which provided the reinforcement member in the lower surface of the position corresponding to the said rail.

  Moreover, you may provide the 1st guide for a movement in the position which opposes a rail in the lower surface of the said concrete block.

  Here, you may provide the 2nd guide engaged with the said adjacent concrete block.

  Moreover, it is good also as moving a concrete block with the forklift provided behind the concrete block.

  Further, the concrete block may be pulled by a winch in which a holding member is inserted into a through hole formed in the bottom plate of the concrete block and a rope member connected to the holding member is connected.

  Here, a filler may be injected from the through hole.

  The concrete block moving device according to the present invention includes a concave rail disposed on a pedestal installed on the foundation concrete, and a rolling element disposed on the rail.

  Here, the gantry includes an anchor and a beam member fixed to an upper portion of the anchor, and the concave rail may be disposed on the beam member via a spacer.

  Moreover, you may form a reinforcement member in the position which opposes a rail in the lower surface of a concrete block.

  Furthermore, you may provide a 1st guide in the position facing a rail in the lower surface of the said concrete block.

  Moreover, you may provide the 2nd guide engaged with an adjacent concrete block.

  Further, a through hole into which the rope member holding member can be inserted may be formed in the bottom plate of the concrete block.

  According to the method for installing a concrete block according to claim 1 of the present invention, the concrete block can be moved and installed at a predetermined position even when excavation larger than the width of the concrete block cannot be performed. Therefore, the rail height can be managed with high accuracy, and the concrete blocks can be well connected to each other.

  According to the concrete block installation method of the second aspect, since the reinforcing member comes into contact with the rolling elements disposed on the rail, the concrete block can be installed without damaging the bottom plate.

  Further, according to the concrete block installation method of the third aspect, the concrete block is guided by the first moving guide provided on the bottom plate, so that it can be easily determined without changing the shape of the lower surface of the concrete block. It can be moved to a position, and the cost can be further reduced.

  Moreover, according to the concrete block installation method of the fourth aspect, the concrete blocks can be coupled together along the second guide, so that the positioning can be easily performed.

  According to the concrete block installation method of the fifth aspect, the concrete block is pushed and moved directly by the forklift, so that the concrete block can be prevented from falling down and moved smoothly.

  Further, according to the method for installing a concrete block according to claim 6, since the rope member connected to the holding member can be pulled and pulled by a winch or the like, a place where a large machine such as a forklift cannot enter, Even when it cannot be moved by a forklift in a place where exhaust cannot be performed, the concrete block can be moved in parallel in a balanced manner.

  Moreover, according to the concrete block installation method of claim 7, since the filler can be injected into the lower part of the concrete block using the through hole for inserting the holding member, the operation is simplified. can do.

  Moreover, according to the concrete block moving apparatus of claim 8, the concrete block can be moved and installed at a predetermined position even when excavation cannot be performed larger than the width of the concrete block. Since it is the structure which arrange | positions a rail, the height of a rail can be managed accurately and a concrete block can be connected favorably.

  Further, according to the concrete block moving device of the ninth aspect, since the rail is fixed to the gantry via the spacer, the difference in height of the rail can be reduced and the concrete block can be installed with high accuracy.

  Further, according to the concrete block moving device of the tenth aspect, the reinforcing member comes into contact with the rolling elements arranged in the rail, so that it can be installed without damaging the lower surface of the concrete block.

  Further, according to the concrete block moving device of the eleventh aspect, the concrete block is guided to the first guide for movement provided on the bottom plate, so that it can be easily positioned at a predetermined position without changing the shape of the lower surface of the concrete block. The cost can be further reduced.

  Moreover, according to the concrete block moving apparatus of Claim 12, since concrete blocks can be connected along a 2nd guide, it can position easily.

  Further, according to the concrete block moving device of the thirteenth aspect, since the rope member connected to the holding member can be pulled and pulled by the winch or the like, the concrete block can be moved in parallel in a balanced manner. .

  Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings.

  First, an outline of a concrete block moving device according to the present invention will be described with reference to FIGS. FIG. 1 is a longitudinal sectional view showing a state in which a concrete block is placed on a concrete block moving apparatus according to the present invention. FIG. 2 is a perspective view showing a rolling element according to the present invention. FIG. 3 is a configuration diagram schematically showing a positional relationship with the forklift in the concrete block moving device according to the present invention. FIG. 4 is a configuration diagram schematically showing a positional relationship with the winch in the concrete block moving device according to the present invention.

  As shown in FIG. 1, a groove 60 formed by excavating the ground is driven with temporary materials 62 such as H-shaped steel for preventing collapse on both sides, and a crushed stone 63 is laid on the bottom surface. . The concrete block moving device 1 includes a concave rail 2 disposed on the foundation concrete 42 and 43 placed on the crushed stone 63, and a cylindrical body 3 which is a rolling element in the concave portion 2a of the rail 2. Composed. The concave rail 2 is installed on a rail installation base 4 which is a base via a spacer (not shown).

  Here, the rail installation base 4 drives two anchors 5 parallel to the ground, and the first foundation concrete 42 is driven there at a predetermined height, and the angle steel 6 as a beam member is horizontally placed. The two anchors 5 are fixed to each other by welding and are provided at predetermined intervals from the carry-in entrance to the installation position tip.

  The rail 2 is a concave grooved steel made of steel and is arranged on both sides in the width direction up to the installation position of the box culvert 21 and is installed on the rail installation base 4 via a spacer (not shown). It is being fixed to the rail installation stand 4 by. The spacers having various thicknesses are prepared, and the rails 2 can be installed with high accuracy by appropriately selecting or combining the spacers and disposing them between the gantry and the rails. Further, by placing the second foundation concrete 43 up to the height of the side plate 2b of the rail 2, the rail 2 fixed to the rail installation base 4 is embedded in the first and second foundation concretes 42, 43.

  As shown in FIG. 2, the cylindrical body 3 is a round bar having a diameter larger than the height of the concave portion 2 a of the rail 2 made of steel and having a diameter of about 60 mm to 100 mm, and is cut to a length shorter than the width of the rail 2. The side surface 8 is arranged at a predetermined interval in the recess 2a of the rail 2 so as to face the side plate 2b of the rail 2. The interval at which the cylindrical bodies 3 are arranged is arbitrary, but the concrete blocks are arranged in consideration of being able to move while keeping the horizontal state during the horizontal pulling to prevent the concrete blocks from being damaged and smooth. It is preferable when moving. Further, the center of the cylindrical body 3 is pivotably and slidably supported by a supporting shaft (not shown), and the supporting shaft is fixed to the rail 2 so that the cylindrical body 3 is at a height that does not contact the bottom plate of the rail 2. The cylindrical body 3 may be integrated with the rail 2 via a support shaft.

  Next, the configuration of the box culvert 21 that is a concrete block will be described.

  The box culvert 21 is made of precast concrete, and includes a bottom plate 22, side plates 26, and a top plate 34. The box culvert 21 has a hollow prismatic body, and is placed on the cylindrical body 3 from a carry-in entrance by a crane or the like. The bottom surface 22a of the bottom plate 22 is constituted by a flat surface, and a steel plate material 23 as a reinforcing member is embedded at a position facing the rail 2 so that the surface 23a of the plate material 23 is flush with the lower surface 22a of the bottom plate 22. Yes. The plate member 23 is provided over the entire length of the box culvert 21 in the longitudinal direction of the rail 2.

  The angle steel 24 as the first guide is fixed by a bolt 25 with the other piece 24b abutting against the lower surface 22a so that the one piece 24a is engaged with the rail 2.

  A pair of guide inclined portions 31 as a second guide are provided on the end surface 21a in the length direction of the box culvert 21 so as to protrude in the longitudinal direction. Correct the misalignment. The guide inclined portion 31 has a proximal end fixed to inner surfaces 26a of both side plates 26 of the box culvert 21 by bolts (not shown), and a distal end protruding from the end surface 21a in the length direction, and gradually inwardly inclined toward the distal end. It has a form to do. Further, the guide inclined portion 31 may be provided on the outer surface of the side plates 26, but it is preferable to provide the guide inclined portion 31 on the inner surface because the width of the excavation hole can be reduced.

  A forklift 35 for pushing and moving the box culvert to the installation position is provided behind the box culvert 21 in the moving direction. However, when the forklift cannot be provided due to restrictions on the construction site, it is pulled by the winch 33. That is, the bottom plate 22 of the box culvert 21 is formed with one set for each width in the vertical direction downward and two sets of through holes 28 in the length direction. A holding member 27 provided at the distal end and having a connecting rod 30 at the base end is detachably fixed to the bottom plate 22 by inserting the connecting rod 30 into the through hole 28. One end of a wire rope 32, which is a robe material, is connected to the connection fitting 29, and the other end of the wire rope 32 is connected to a winch 33 to pull the box culvert 21. The winch 33 is fixed on the foundation concrete 43 ahead of the installation position of the box culvert 21. After the box culvert 21 is moved to a predetermined position, the through hole 28 is used as a grout material injection hole described later.

  Needless to say, the box culvert 21 has the configuration of a normal box culvert. For example, a vertical through hole for inserting a PC steel material or a fixing box hole is provided at a predetermined position.

  Next, a concrete block installation method in the present embodiment will be described with reference to FIG. FIG. 5 is a flowchart showing an outline of a method for installing a concrete block according to the present invention.

  From the crushed stone 63 laid on the bottom surface of the groove 60, two anchors 5 are driven in parallel on both sides in the width direction (S1), and the first foundation concrete 42 is driven there at a height of 5 cm ( S2), the angle steel 6 which is a beam member is fixed to the upper part of the two anchors 5 by welding so as to be horizontal, and is provided at intervals of 2 meters from the carry-in entrance to the tip of the installation position.

  The rail 2 is arranged on both sides in the width direction up to the tip of the installation position of the box culvert 21. A spacer (not shown) is arranged on the rail installation base 4 between the rail 2 and the rail installation base 4 so that the height of the rail 2 is increased. Adjustment is performed, and it fixes to the rail installation stand 4 by welding (S3). Further, by placing the second foundation concrete 43 up to the height of the side plate 2b of the rail 2 (S4), the rail 2 fixed to the rail installation base 4 is buried in the first and second foundation concretes 42, 43. Is done.

  The cylindrical body 3 is arranged in the recess 2a of the rail 2 from the carry-in entrance of the box culvert 21 to the tip of the installation position at an interval of about 2 to 30 cm (S5), and the box culvert 21 is placed on the cylindrical body 3 from the carry-in entrance by a crane. Placed on. At this time, the surface 23 a of the plate member 23 provided on the lower surface 22 a of the bottom plate 22 is in contact with the cylindrical body 3, and one piece 24 a of the angle steel 24 is engaged with the side plate 2 b of the rail 2. The box culvert 21 is pushed to the installation position by the forklift 35 provided at the rear of the box culvert 21 in the moving direction. However, when the forklift cannot be provided due to restrictions on the construction site, the forklift is laterally pulled by the winch 33 (S6). That is, the winch 33 is fixed on the second foundation concrete 43 by bolts in front of the front end of the installation position of the box culvert 21, the holding member 27 is inserted into the through hole 28 provided in the bottom plate 22, and the wire is connected to the connecting portion 29. One end of the rope 32 is connected, the other end of the wire rope 32 is connected to the winch 33, and the box culvert 21 carried on the rail 2 is laterally pulled by the winch 33 and rolls on the cylindrical body 3 to be installed. (S6). At this time, the piece 24a of the angle steel 24 serves as a guide and prevents the box culvert 21 from being displaced in the width direction. Further, the guide inclined portion 31 as the second guide abuts on the inner surface 26a of the side plate 26 of the box culvert 21 adjacent in the length direction, so that the box culvert 21 can be easily aligned without fine adjustment. it can. Furthermore, since the leading ends of the guide inclined portions 31 are inclined inward, the box culverts 21 can be connected within a predetermined error range even if the box culverts 21 are slightly deviated from each other. Needless to say, the movement of the box culvert 21 can also be performed by human power without using the forklift 35 or the winch 33.

  The installed box culverts 21 are vertically fastened together by plates, washers and nuts in the fixing box holes provided in the lower corners of the box culverts by PC steel arranged in the length direction. (S7). When using an upper and lower split box culvert, the vertical tightening is performed before the vertical tightening.

  In this way, the box culvert 21 that is installed at the installation position and is connected to the adjacent blocks and optionally tightened up and down is removed from the holding member 27 and connected to a grout pump (not shown) in an arbitrary through hole 28. The hose nozzle is inserted, and a gap 44 between the box culvert 21 and the foundation concrete 43 is filled with a grout material as a filler, for example, mortar (S8). Since there is no protrusion on the lower surface 22a of the bottom plate 22, the grout material can penetrate into every corner and be filled without any gaps. Moreover, the protrusion part 44 formed in the side part of the 2nd foundation concrete becomes a formwork, and can prevent the grout material from seeping out. The injection is performed until the grout material overflows from the air vent through hole 28 into which the nozzle is not inserted. At this time, when there is a vertical gradient between the through holes 28, good filling can be performed by injecting a grout material from the lower through hole 28. In this case, if a rubber stopper (not shown) is inserted into the through hole 28 after the grouting material is injected, the grouting material can be prevented from flowing out.

  Such a horizontal installation method enables a method that cannot be performed by a conventional installation method using a large machine such as a crane. For example, as shown in FIG. 6, in the construction of connecting a new box culvert 21 to an existing structure 51, when the connection start point 51a and the carry-in port 52 are at the same point, the conventional method has a relationship with carry-in. Therefore, it is difficult to connect the box culvert without any gap from the fulcrum position. However, according to the horizontal pulling, the box culvert 21 (FIG. 6a) loaded is Then, by moving to the point A side from the carry-in entrance 52 (Fig. 6b), when all the carry-in is completed (Fig. 6c), by moving it horizontally toward the fulcrum (Fig. 6d), the start point 51a and It becomes possible to connect without a gap.

  In this way, in this embodiment, corresponding to claim 1, the concave rail 2 is arranged on the rail installation base 4 which is the base installed 42,43 on the foundation concrete, and the rolling element is attached to the rail 2 Since it comprises a step of arranging a certain cylindrical body 3, a step of placing a concrete block 21 on the cylindrical body 3, and a step of installing the concrete block 21 at a predetermined position, it is larger than the width of the concrete block 21. Even when excavation cannot be performed, the concrete block 21 can be moved and installed at a predetermined position, and the rail 2 is arranged on the rail mounting base 4 so that the height of the rail 2 can be accurately controlled. And the concrete blocks 21 can be well connected to each other.

  As described above, in this embodiment, in correspondence with claim 2, the concrete block 21 provided with the plate member 23 as the reinforcing member on the lower surface 22a at the position corresponding to the rail 2 is used. By the rolling contact with 3, the lower surface 22a of the concrete block 21 can be moved without being damaged.

  In this way, in this embodiment, corresponding to claim 3, the angle steel 24 as the first guide for movement is provided on the lower surface 22 a of the bottom plate 22 of the concrete block 21 at a position facing the rail 2. Therefore, since the concrete block 21 is guided by the moving angle steel 24 provided on the bottom plate 22, it can be easily moved to a predetermined position without changing the shape of the lower surface 22a of the concrete block 21, and the cost is further increased. Can be reduced.

  Further, in this embodiment, in accordance with the fourth aspect of the present invention, the guide inclined portion 31 that is the second guide that engages with the adjacent concrete block 21 is provided. Since the concrete blocks 21 can be connected to each other, positioning can be performed easily.

  In this way, in this embodiment, corresponding to claim 5, since the concrete block 21 is moved by the forklift 35 provided behind the concrete block 21, the concrete block is pushed and moved directly by the forklift. It prevents the concrete block from falling down and can be moved smoothly.

  Thus, in this embodiment, corresponding to claim 6, the rope member is formed by inserting the holding member 27 into the through hole 28 formed in the bottom plate 22 of the concrete block 21 and connecting to the holding member 27. The concrete block 21 is pulled by the winch 33 to which the wire rope 32 is connected, so even if it cannot be moved by a forklift in a place where a large machine such as a forklift cannot enter or a place where exhaust cannot be performed, the concrete is balanced in parallel. Block 21 can be moved.

  In this way, in this embodiment, in correspondence with claim 7, since the grout agent as the filler is injected from the through hole 28, the through hole 28 for inserting the holding member 27 is used. Since the filler can be injected into the lower portion 44 of the concrete block 21, the operation can be simplified and the cost can be reduced.

  In this way, in this embodiment, corresponding to claim 8, the concave rail 2 disposed on the rail installation base 4 installed on the foundation concrete 42, 43, and the rail 2 are arranged. Since the cylinder block 3 is provided, the concrete block 21 can be moved and installed at a predetermined position even when the excavation cannot be performed larger than the width of the concrete block 21, and the rail installation base 4 Since the rails 2 are arranged on the top, the height of the rails 2 can be managed with high accuracy, and the concrete blocks 21 can be connected well.

  In this way, in this embodiment, corresponding to claim 9, the anchor 5 and the angle steel 6 which is a beam member fixed to the upper part of the anchor 5 are formed, and a spacer is provided on the angle steel 6 via a spacer. Since the concave rail 2 is arranged, the height of the rail 2 can be managed with high accuracy, and the concrete blocks 21 can be well connected to each other.

  In this way, in this embodiment, in correspondence with claim 10, the plate member 23, which is a reinforcing member, is formed on the lower surface of the concrete block 21 at a position facing the rail 2, so that the plate member 23 is arranged on the rail 2. Since it contacts the cylindrical body 3 which is the described rolling element, it can be installed without damaging the lower surface 22a of the concrete block 21.

  In this way, in this embodiment, in correspondence with claim 11, the angle steel 24 as the first guide for movement is provided on the lower surface 22a of the concrete block 21 at the position facing the rail 2, so that the concrete Since the block 21 is guided by the moving angle steel 24 provided on the bottom plate 22, it can be easily moved to a predetermined position without changing the shape of the lower surface 22a of the concrete block 21, and the cost can be further reduced. Can do.

  As described above, in this embodiment, the guide inclined portion 31 that is the second guide that engages with the adjacent concrete block 21 is provided in correspondence with the twelfth aspect. Therefore, the concrete block along the guide inclined portion 31 is provided. Since 21 can be connected, positioning can be performed easily.

  In this way, in this embodiment, corresponding to claim 13, since the through hole 28 into which the rope member holding member 27 can be inserted is formed in the bottom plate 22 of the concrete block 21, it is connected to the holding member 27. Since the wire rope 32, which is the rope material, can be pulled and pulled by the winch 33 or the like, the concrete block 21 can be moved in parallel with good balance.

  Next, a second embodiment of the present invention will be described with reference to FIG. FIG. 7 is an enlarged longitudinal sectional view of the concrete block moving device according to the present invention. In addition, about the structure which performs the same function as the said Example, the same code | symbol is attached | subjected and description is abbreviate | omitted for simplicity.

  As shown in FIG. 7, the moving device according to this embodiment is configured by disposing a bearing ball 71 as a rolling element in the recess 2 a of the rail 2. At this time, the bearing ball 71 and the plate material 23 are in contact with each other.

  The bearing ball is made of steel with a diameter of 60 mm to 100 mm, and larger than the side plate 2b of the rail 2 is used. The interval at which the bearing balls are disposed is arbitrary, and is disposed in consideration so that the box culvert 21 can move while maintaining the level during the horizontal pulling.

  Thus, when a bearing ball is used as the rolling element, the contact area with the plate member 23 can be reduced, and the resistance can be reduced, so that it is possible to move more smoothly.

  The present invention is not limited to this embodiment, and various modifications can be made within the scope of the gist of the present invention. For example, the cylindrical body and the bearing ball only need to be formed of a material having a considerable strength, and are not limited to steel materials. Further, a combination using a bearing ball for the angle steel rail and the rolling element can be similarly implemented.

It is a longitudinal cross-sectional view which shows the state which mounted the concrete block in the concrete block moving apparatus which concerns on this invention. It is a perspective view which shows the rolling element in the said Example. It is a block diagram which shows typically the positional relationship with the forklift in a concrete block moving apparatus. It is a block diagram which shows typically the positional relationship with the winch in a concrete block moving apparatus. It is a flowchart figure which shows the outline of the installation method of a concrete block. It is a block diagram which shows typically the installation method of a concrete block. It is an expanded longitudinal cross-sectional view of the concrete block moving apparatus which shows 2nd Example of this invention. It is a block diagram which shows a prior art example.

Explanation of symbols

1 moving device 2 rail 3 cylindrical body (rolling body)
4 Rail installation base (base)
5 Anchor 6 Angle steel (beam member)
21 Concrete block
21a side view
22 Bottom plate
22a bottom
23 Plate (Reinforcing member)
24 First guide
27 Holding member
28 Through hole
31 Second guide
32 wire rope
33 Winch
35 Forklift

Claims (13)

Arranging the concave rail on the base installed in the foundation concrete, arranging the rolling element on the rail, placing the concrete block on the rolling element, and installing the concrete block at a predetermined position A concrete block installation method comprising the steps of: 2. The method for installing a concrete block according to claim 1, wherein a concrete block provided with a reinforcing member on a lower surface at a position corresponding to the rail is used. The method for installing a concrete block according to claim 1 or 2, wherein a first guide for movement is provided on a lower surface of the concrete block at a position facing the rail. 4. The method for installing a concrete block according to any one of claims 1 to 3, further comprising a second guide that engages with an adjacent concrete block. The concrete block installation method according to any one of claims 1 to 4, wherein the concrete block is moved by a forklift located behind the concrete block. 5. The concrete block is pulled by a winch in which a holding member is inserted into a through hole formed in a bottom plate of the concrete block and a rope member connected to the holding member is connected to the concrete block. How to install concrete blocks. The method for installing a concrete block according to claim 6, wherein a filler is injected from the through hole. A concrete block moving apparatus comprising: a concave rail disposed on a pedestal installed in foundation concrete; and a rolling element disposed on the rail. 9. The concrete block moving device according to claim 8, wherein the gantry includes an anchor and a beam member fixed to an upper portion of the anchor, and the concave rail is disposed on the beam member via a spacer. . The concrete block moving device according to claim 8 or 9, wherein a reinforcing member is formed on a lower surface of the concrete block at a position facing the rail. The concrete block moving device according to any one of claims 8 to 10, wherein a first guide for movement is provided on a lower surface of the concrete block at a position facing the rail. The concrete block moving device according to claim 8, further comprising a second guide that engages with an adjacent concrete block. The concrete block moving device according to any one of claims 8 to 12, wherein a through-hole into which a rope material holding member can be inserted is formed in a bottom plate of the concrete block.

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