Dismantling and re-assembling method for formwork of wave-dissipating base-solidifying block

Abstract

To provide a dismantling and re-assembling method for formwork of a wave-dissipating base-solidifying block which can be constructed safely in a short time.SOLUTION: A method for dismantling and re-assembling the formwork of a wave-dissipating base-solidifying block, wherein the wave-dissipating base-solidifying block has a lower block, an upper block, four side blocks, and a central block, each being substantially cubic; and the formwork consists of a bottom plate that contacts the lower surface of the lower block, four lower L-shaped plates, four horizontal plates, four side L-shaped plates, a width stop frame, and two upper L-shaped plates; and during dismantling, all members constituting the formwork do not need to be dismantled and removed, whereby the dismantling work is shortened; and during re-assembling, the members constituting the formwork are lifted using a lifting frame or the like and assembled in a suspended state, whereby scaffolding becomes unnecessary.SELECTED DRAWING: Figure 7

Description

[Technical Field]

[0001] The present invention relates to a method for dismantling and reassembling formwork for wave-dissipating foot-protecting blocks. [Background technology]

[0002] BACKGROUND ART Wave-dissipating base protection blocks made of concrete blocks have been widely used for the purpose of revetments and water control structures on coasts and rivers. Wave-dissipating base-stabilizing blocks are designed in various shapes to efficiently absorb wave energy, and one of these is a hexapod block made up of roughly cubic blocks (Figure 1). Each hexapod block has an approximately cubic lower block 11, four side blocks 12, an upper block 13, and a central block 14, with the lower block 11 protruding from the bottom of the central block 14, the side blocks 12 protruding from the four side faces, and the upper block 13 protruding from the top face.

[0003] The wave-dissipating base-fixing blocks are concrete blocks, which are formed by pouring concrete into assembled formwork and allowing it to harden. In this case, in the case of a hexapod block, as shown in FIG. 2, the formwork is assembled, concrete is poured and hardened, and the formwork is dismantled with the lower block 11 standing as a leg. The formwork for the hexapod block consists of a bottom plate 2 located on the underside of the lower block 11, a lower L-shaped plate 3 located in an approximately L-shape along the side of the lower block 11 and the bottom of the side blocks 12 and connectable to the bottom plate 2, four horizontal plates 4 located on the end faces of the side blocks 12 parallel to the surfaces protruding from the central block 14, four side L-shaped plates 5 located in an approximately L-shape along the side of adjacent side blocks 12 and connectable to the lower L-shaped plate 3 and horizontal plate 4, a width stop frame 6 located along the bottom edge of the upper block 13 and engaging with the four side L-shaped plates, and two upper L-shaped plates 7 located in an approximately L-shape along two adjacent sides of the four sides of the upper block 13. Bolts 81 and nuts 82 are used to connect adjacent members.

[0004] Previously, when dismantling these forms, the width stopper frame 6 was first removed, and then all of the formwork was removed from the wave-dissipating base fixing block 1 in the following order: upper L-plate 7, horizontal plate 4, side L-plate 5, and lower L-plate 3. In particular, when removing some of the lower L-plates 3, the wave-dissipating base fixing block 1 could become unstable and fall over, and since working under the wave-dissipating base fixing block 1 is dangerous, scaffolding was required to prevent the wave-dissipating base fixing block 1 from falling over. Furthermore, when assembling the formwork, all the components were assembled from the bottom up, but because the empty formwork was unstable, scaffolding was required for the assembly work at the top. Summary of the Invention [Problem to be solved by the invention]

[0005] As mentioned above, the conventional method of dismantling and assembling formwork requires scaffolding, which requires construction and installation work processes. In addition, the disassembly and reassembly work also took time, as all the parts had to be removed and reassembled.

[0006] The object of the present invention is to provide a method for dismantling and reassembling formwork for wave-dissipating root-protecting blocks, which can be carried out safely in a short time. [Means for solving the problem]

[0007] The present invention, which has been made to achieve the above object, is a method for dismantling and reassembling a formwork for a wave-dissipating base-securing block, wherein the wave-dissipating base-securing block is a hexapod block having a substantially cubic lower block, upper block, four side blocks, and a central block, with the lower block protruding from the bottom surface of the central block, the upper block protruding from the top surface, and the side blocks protruding from the four side surfaces, and the formwork comprises a bottom plate in contact with the bottom surface of the lower block, and four lower L-shaped plates in contact with the side surfaces of the lower block and the bottom surfaces of the side blocks, respectively, and connectable to the bottom plate. The method comprises: four horizontal plates in contact with the end faces of the side blocks that are parallel to the surfaces of the side blocks that protrude from the central block; four side L-shaped plates that contact the sides of the adjacent side blocks and can be connected to the lower L-shaped plates and the horizontal plates; a width stop frame that is located along the bottom edge of the upper block and engages with the four side L-shaped plates; and two upper L-shaped plates that contact two adjacent sides of the four sides of the upper block, and includes: (1) a step of lifting the width stop frame and removing it from the four side L-shaped plates; and (2) a step of lifting the two connected upper L-shaped plates and removing them from the upper block. (3) a step of disconnecting the bottom plate from the lower L-shaped plate, lifting up the wave-dissipating root-securing block together with the four lower L-shaped plates, the four horizontal plates, and the four side L-shaped plates, and then removing and hanging down the bottom plate; (4) a step of connecting the four horizontal plates and the four side L-shaped plates to a formwork suspension frame that is approximately rectangular in plan view via wires; (5) a step of disconnecting the lower L-shaped plate from the horizontal plate and the side L-shaped plate, and disconnecting the two side L-shaped plates from the horizontal plate that are diagonally positioned relative to the wave-dissipating root-securing block, and then lifting up the formwork suspension frame and lifting up the two side L-shaped plates that have been disconnected from the horizontal plates. (6) a process of lifting the side L-plate, the remaining two side L-plates and the four horizontal plates connected thereto, removing them from the side block, and reconnecting the two side L-plates that have been released from the horizontal plates to the horizontal plates while hanging them from the formwork hanging frame; (7) a process of dropping the four lower L-plates that are in contact with the bottom surface of the side block downward to create a space between the bottom surface of the side block and the top surfaces of the four lower L-plates; and (8) a process of lifting the wave-dissipating root-stabilizing block using a sling belt inserted into the space and removing the four lower L-plates from the lower block.(8) A step of lifting up the four lower L-shaped plates and lowering them onto the bottom plate to connect the bottom plate and the lower L-shaped plates; (9) A step of lowering the four side L-shaped plates and four horizontal plates that were reconnected in step (5) onto the four lower L-shaped plates to connect the lower L-shaped plates with the horizontal plates and the side L-shaped plates; (10) A step of lowering the width stop frame and engaging it with the four side L-shaped plates; and (11) A step of lowering the two upper L-shaped plates into the width stop frame. The formwork hanging frame may be larger than the wave-dissipating root-stabilizing block in plan view. [Effects of the Invention]

[0008] The present invention can achieve at least one of the following effects by solving the above-mentioned problems. (1) The components that make up the formwork are lifted using a lifting frame or the like and assembled while still suspended, so no scaffolding is required, and no construction or installation work process is required. (2) Since it is not necessary to dismantle and remove all of the components that make up the formwork, the dismantling work is shortened. (3) The formwork suspension frame that lifts the horizontal boards and side L-shaped boards is larger than the wave-dissipating root-fixing block in plan view, so the individual components do not interfere with each other and can be lifted so that they are spread out relative to the wave-dissipating root-fixing block. [Brief explanation of the drawings]

[0009] [Figure 1] Perspective view of wave-dissipating foot-protection blocks [Figure 2] Perspective view of wave-dissipating foot protection blocks and formwork [Figure 3] Exploded perspective view of formwork [Figure 4] An explanatory diagram of the method for dismantling and reassembling the formwork of the wave-dissipating foot-protecting block of the present invention (1) [Figure 5] An explanatory diagram of the method for dismantling and reassembling the formwork of the wave-dissipating foot-protecting block of the present invention (2) [Figure 6] An explanatory diagram of the method for dismantling and reassembling the formwork of the wave-dissipating foot-protecting block of the present invention (3) [Figure 7]An explanatory diagram of the method for dismantling and reassembling the formwork of the wave-dissipating foot-protecting block of the present invention (4) [Figure 8] An explanatory diagram of the method for dismantling and reassembling the formwork of the wave-dissipating foot-protecting block of the present invention (5) [Figure 9] An explanatory diagram of the method for dismantling and reassembling the formwork of the wave-dissipating base-protecting block of the present invention (6) [Figure 10] An explanatory diagram of the method for dismantling and reassembling the formwork of the wave-dissipating foot-protecting block of the present invention (7) [Figure 11] An explanatory diagram of the method for dismantling and reassembling the formwork of the wave-dissipating foot-protecting block of the present invention (8) DETAILED DESCRIPTION OF THE INVENTION

[0010] Hereinafter, the method for dismantling and reassembling the formwork of the wave-dissipating root-securing block of the present invention will be described in detail with reference to the drawings.

[0011] [Example 1] (1) Wave-dissipating foot-stabilizing blocks As described above, the wave-dissipating base-stabilizing block 1 that is the subject of the present invention is a hexapod block, and has a substantially cubic lower block 11, four side blocks 12, an upper block 13, and a central block 14, with the lower block 11 protruding from the bottom surface of the central block 14, the side blocks 12 protruding from the four side surfaces, and the upper block 13 protruding from the top surface (Fig. 1).

[0012] (2) Formwork The formwork used in the method for dismantling and reassembling the formwork for wave-dissipating root-stabilizing blocks of the present invention is the same as that conventionally used when forming hexapod blocks, and as described above, consists of a bottom plate 2 located on the underside of the lower block 11, a lower L-shaped plate 3 located in an approximately L-shape along the side of the lower block 11 and the bottom surfaces of the side blocks 12 and connectable to the bottom plate 2, four horizontal plates 4 located on the end faces of the side blocks 12 parallel to the protruding surfaces from the central block 14, four side L-shaped plates 5 located in an approximately L-shape along the side of adjacent side blocks 12 and connectable to the lower L-shaped plate 3 and horizontal plate 4, a width stop frame 6 located along the bottom edge of the upper block 13 and engaging with the four side L-shaped plates, and two upper L-shaped plates 7 located in an approximately L-shape along two adjacent sides of the four sides of the upper block 13 (Figures 2 and 3). The formwork uses bolts 81 and nuts 82 to connect adjacent members, and can be reused to form new wave-dissipating root-stabilizing blocks 1 by loosening the bolts 81 and nuts 82 and dismantling them.

[0013] (3) Dismantling and reassembly method of the formwork for wave-dissipating block The method of dismantling and reassembling the formwork for wave-dissipating root-stabilizing blocks of the present invention involves dismantling the formwork used to form the wave-dissipating root-stabilizing block 1 and reassembling it to form a new wave-dissipating root-stabilizing block 1.

[0014] (4) Removing the width stopper frame First, the width stop frame 6, which is located along the bottom side of the upper block 13 and engages with the four side L-shaped plates, is lifted and removed.

[0015] (5) Removing the upper L-shaped plate After removing the width stop frame 6, the two connected upper L-shaped plates 7 are lifted up at the same time and removed from the upper block 13 of the wave-dissipating root-stabilizing block 1 (Figure 4). When lifting, loosening the nuts 82 creates a gap between the two upper L-shaped plates 7, but the two upper plates 7 do not separate, allowing for easy lifting. The two removed upper L-shaped plates are reassembled by tightening the nuts 82 while still hanging. The assembled upper L-shaped plate 7 is then placed on the ground or other suitable location.

[0016] (6) Removing the bottom plate The nuts 82 are removed from the bolts 81 connecting the bottom plate 2 and the lower L-shaped plates 3 to release the connection, and the wave-dissipating root-stabilizing block 1, along with the four connected lower L-shaped plates 3, four horizontal plates 4, and four side L-shaped plates 5, are lifted up and placed in another location, and the bottom plate 2 is removed (Figure 5). Since the wave-dissipating base-stabilizing block 1 is heavy, a lifting frame 91 is used to lift it, and the lifting is performed using wires 92 wrapped around the bottom of each of the four side blocks 12. The removed bottom plate 2 is to be reused, so it is cleaned appropriately.

[0017] (7) Connecting the formwork hanging frame to the horizontal board and side L-shaped board After removing the bottom plate 2, four horizontal plates 4 and four side L-shaped plates 5 are connected to a wire 92 whose upper part is connected to a formwork suspension frame 93 that is generally rectangular in plan view (FIG. 6). The formwork suspension frame 93 is larger than the wave-dissipating base-securing block 1 in plan view, and the horizontal boards 4 and side L-shaped boards 5 are suspended outward by wires 92.

[0018] (8) Lifting the horizontal board and side L-shaped board The nuts 82 are removed from the bolts 81 connecting the horizontal boards 4, which are connected to the formwork hanging frame 93 via wires 92, and the side L-shaped boards 5 and lower L-shaped board 3, to release the connection. In addition, the connection between the two side L-shaped boards 5 and horizontal boards 4 located diagonally across from the wave-dissipating root-stabilizing block 1 is released. There is no need to loosen the nuts 82 on the bolts 81 connecting the remaining two side L-shaped boards 5 and horizontal boards 4, which shortens the dismantling work. Then, the formwork suspension frame 93 is raised to hoist up the horizontal boards 4 and side L-shaped boards 5 (Figure 7). At this time, the two diagonally positioned side L-shaped boards 5 are each hoisted up as two members, and the remaining two side L-shaped boards 5 and horizontal board 4 are hoisted up as two members, with two horizontal boards 4 connected to both ends of one side L-shaped board 5. Because the formwork suspension frame 93 is larger than the wave-dissipating root fixing block 1 in a plan view, the individual members do not interfere with each other, and are hoisted up so that they are spread apart relative to the wave-dissipating root fixing block 1, and are removed from the wave-dissipating root fixing block 1. The four removed horizontal boards 4 and side L-shaped boards 5 are reassembled by fastening the bolts 81 and nuts 82 again while the disconnected horizontal boards 4 and side L-shaped boards 5 are still suspended. As the assembly is carried out while suspended, no scaffolding is required, and no construction or installation work process is required. In addition, the assembly work is shortened because only the disconnected parts need to be reassembled.

[0019] (9) Lifting of wave-dissipating block With the cross plates 4 and side L-shaped plates 5 removed, the lower L-shaped plates 3 around the lower blocks 11 of the wave-dissipating base fixing block 1 are floating by approximately the thickness of the bottom plate 2 due to the removal of the bottom plate 2 (Fig. 8(a)). Then, by loosening the nuts 82 and dropping them downwards by hitting them with a hammer or the like, a space S is created between the bottom surfaces of the side blocks 12 of the wave-dissipating base fixing block 1 and the top surfaces of the lower L-shaped plates 3 (Fig. 8(b)). By simply loosening the nuts 82 but not removing them from the bolts 81, the four lower L-shaped plates 3 remain together. Then, the wave-dissipating root-stabilizing block 1 is lifted up through a sling belt 94 connected at the top to the suspension frame 91 into the space S below the four side blocks 12, and the lower L-shaped plate 3 is removed from the lower block 11 (Figure 9). The lower L-shaped plates 3 removed from the wave-dissipating base-securing block 1 are reassembled by tightening the nuts 82. The four lower L-shaped plates 3 remain as one unit by simply loosening the nuts 82, allowing for easy assembly.

[0020] (10) Connecting the bottom plate and the lower L-shaped plate The four reassembled lower L-shaped plates 3 are lifted up and lowered onto the removed bottom plate 2, and the bottom plate 2 and the lower L-shaped plates 3 are connected via bolts 81 and nuts 82.

[0021] (11) Connecting the lower L-shaped board, horizontal board, and side L-shaped board The reassembled horizontal boards 4 and side L-shaped boards 5 are lifted up using the formwork suspension frame 93 and then lowered onto the lower L-shaped board 3, connecting the lower L-shaped board 3 to the horizontal boards 4 and side L-shaped boards 5 (Fig. 10). The horizontal boards 4 and side L-shaped boards 5 are connected to the lower L-shaped board 3 while still hanging in their assembled state, so there is no need to build scaffolding.

[0022] (12) Engagement of width stopper frame, hanging down of upper L-plate A width stopper frame 6 is hung down on the side L-plate 5 connected to the lower L-plate 3 and engaged therewith. Then, the two upper L-shaped plates 7 are hung down into the width stopper frame 6, completing the assembly of the formwork (Fig. 11). These hanging down operations do not require the tightening of bolts 81 and nuts 83, and do not require the construction of scaffolding. [Explanation of symbols]

[0023] 1 Wave-dissipating base block, 11 Lower block, 12 Side block, 13 Upper block, 14 Central block 2 Bottom plate 3 Lower L plate 4 horizontal board 5 Side L plate 6 Width stop frame 7 Upper L plate 81 Bolt, 82 Nut

Claims

1. A method for dismantling and reassembling a formwork for a wave-dissipating root-solidifying block, comprising: The wave-dissipating base-stabilizing block is a hexapod block having a substantially cubic lower block, an upper block, four side blocks, and a central block, with the lower block protruding from the bottom surface of the central block, the upper block protruding from the top surface, and the side blocks protruding from the four side surfaces, The formwork is a bottom plate in contact with the lower surface of the lower block; four lower L-shaped plates respectively in contact with the side surfaces of the lower block and the bottom surfaces of the side blocks and connectable to the bottom plate; four horizontal plates in contact with end surfaces of the side blocks parallel to the surfaces of the side blocks protruding from the central block; four side L-shaped plates that are in contact with the side surfaces of adjacent side blocks and can be connected to the lower L-shaped plate and the horizontal plate; a width stopper frame located along the bottom edge of the upper block and engaging with the four side L-shaped plates; Two upper L-shaped plates are in contact with two adjacent sides of the four sides of the upper block, (1) lifting the width stop frame and removing it from the four side L-shaped plates; (2) lifting the two connected upper L-shaped plates and removing them from the upper block; (3) A process of releasing the connection between the bottom plate and the lower L-shaped plate, lifting up the four lower L-shaped plates, the four horizontal plates, and the four side L-shaped plates, and then removing and lowering the bottom plate; (4) A step of connecting the four horizontal boards and the four side L-shaped boards to a formwork suspension frame having a generally rectangular shape in a plan view via wires; (5) A process of disconnecting the lower L-shaped plate from the horizontal plate and the side L-shaped plate, and disconnecting the two side L-shaped plates diagonally positioned relative to the wave-dissipating root-stabilizing block from the horizontal plate, lifting the formwork suspension frame, lifting the two side L-shaped plates that have been disconnected from the horizontal plate, and the remaining two side L-shaped plates and the four horizontal plates connected thereto, removing them from the side block, and reconnecting the two side L-shaped plates that have been disconnected from the horizontal plate to the horizontal plate while hanging them from the formwork suspension frame; (6) dropping the four lower L-shaped plates in contact with the bottom surfaces of the side blocks downward to create spaces between the bottom surfaces of the side blocks and the upper surfaces of the four lower L-shaped plates; (7) Lifting the wave-dissipating root-stabilizing block with a sling belt inserted into the space and removing the four lower L-shaped plates from the lower block; (8) lifting the four lower L-shaped plates and lowering them onto the bottom plate to connect the bottom plate and the lower L-shaped plates; (9) A step of lowering the four side L-shaped plates and the four horizontal plates that were reconnected in the step (5) onto the four lower L-shaped plates to connect the lower L-shaped plates to the horizontal plates and the side L-shaped plates; (10) a step of lowering the width stop frame and engaging it with the four side L-shaped plates; (11) A step of lowering the two upper L-shaped plates into the width stop frame. How to dismantle and reassemble formwork for wave-dissipating root-solidifying blocks.

2. The formwork hanging frame is larger than the wave-dissipating root-fixing block in a plan view. A method for dismantling and reassembling the formwork of the wave-dissipating root-stabilizing block according to claim 1.

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