JP6533678B2 - Disassembly method - Google Patents

Description

  The present invention relates to a method of disassembling a concrete member.

  Conventionally, as a dismantling method of a concrete member, a method of puncturing a concrete member, arranging a hydraulic crusher in the hole, and crushing the concrete by applying pressure to the side concrete with the hydraulic crusher (for example, Patent Document 1) Reference) is known.

JP, 2014-084561, A

  However, in a crushing operation using a general wedge-shaped hydraulic crusher, it is possible to crush only up to a depth of about 550 mm at one time. When drilling a concrete member, it can be drilled to a depth of about 1.8 m at a time using a rock drill, but when crushing work is performed in several stages, after being crushed once, the rattle enters the hole and As a result, the work of re-piercing occurs, which is inefficient.

  The present invention has been made in view of the above-mentioned problems, and an object thereof is to provide a method of disassembling a concrete member which can be disassembled efficiently.

The present invention for achieving the above object comprises the steps of: (a) forming a hole of a predetermined depth from the surface of a concrete member; (b) placing a filler in the hole; and Insert a hydraulic crusher on top of it and apply pressure to the side concrete using the hydraulic crusher to crush the concrete (c), and remove the crush concrete to remove the filling (c) and d) inserting the hydraulic crusher into the remaining part of the hole, applying pressure to the side concrete using the hydraulic crusher and crushing, and removing the crushed concrete (e) The dismantling method is characterized in that the concrete member is dismantled according to, the stuffing material is obtained by stacking a plate material on an elastic material and attaching a linear material to the plate material .

  In the present invention, by filling the holes formed in the concrete member with curing and curing, since the glazing generated at the time of crushing of the concrete by the hydraulic crusher does not enter the holes, the drilling operation can be done at one time and the hydraulic crusher It is possible to carry out the crushing work according to a plurality of times to disassemble the concrete member, and the construction period can be shortened.

Before Symbol elastic material is, for example, a urethane material.
This makes it possible to easily hold the filling in the bore.

In the present invention, the padding is repeated plate material elastic material, by der Rukoto those fitted with wire-shaped material to the plate, filling can easily be taken out from the hole.

Further, in the step (c), it is preferable that the upper surface of the filling move up and down according to the position of the tip of the hydraulic crusher.
As a result, even when the tip is moved up and down at the time of crushing concrete as in the case of a wedge-shaped hydraulic crusher, the holes are not clogged with holes at the time of removal of the cells or the like.

It is desirable to repeat the steps (b) to (d) according to the depth of the holes.
Thereby, dismantling of a large concrete member can be performed efficiently.

  ADVANTAGE OF THE INVENTION According to this invention, the dismantling method of the concrete member which can be dismantled efficiently can be provided.

Figure showing concrete member 11 Figure showing the filling 1 Diagram showing how to disassemble concrete member 11 Diagram showing how to disassemble concrete member 11 The figure which shows the sliding material 15 and the connection part 17 Diagram showing a hydraulic crusher 31 Figure showing the filling 1a Diagram showing how to disassemble concrete member 11 Figure showing the filling 1b Diagram showing how to disassemble concrete member 11

  Hereinafter, embodiments of the present invention will be described based on the drawings.

First Embodiment
FIG. 1 is a view showing a concrete member 11 to be disassembled by a disassembling method according to an embodiment of the present invention, and is a view showing a state in which a hole 13 is drilled.

  In the present embodiment, a rock drill or the like is used to pierce the surface of the concrete member 11 to form a hole 13 of a predetermined depth. Although the actual depth of the holes 13 is not particularly limited, it is at least deeper than the range in which concrete is crushed at one time by a hydraulic crusher described later. A plurality of holes 13 are provided at appropriate intervals. The hole 13 has a substantially circular flat surface, and its diameter is, for example, about 100 mm.

  In the present embodiment, a filling is filled in the middle of the hole 13 before crushing by the hydraulic crusher. FIG. 2A is a view showing the filling 1. The filling 1 has an elastic member 5, a plate 7 and the like.

  The elastic member 5 is a columnar urethane material having a diameter slightly larger than that of the hole 13 and has a hole 3 penetrating in the axial direction.

  The plate material 7 is a disk-like plate material having a diameter slightly smaller than that of the elastic member 5 and the holes 13 and has the holes 4.

  The plate member 7 is stacked under the elastic member 5 so that the holes 3 and 4 communicate with each other, and a rope 9 which is a linear material is passed through the holes 3 and 4. A knot is formed at the end of the rope 9 which has exited the plate 7, and this is hooked into the hole 4 so that the rope 9 can be attached to the plate 7.

  The filling 1 is disposed in the middle of the hole 13 as shown in FIG. 2 (b). The upper surface of the elastic material 5 of the filling 1 is at the depth 27 of the hole 13 shown in FIG. 2 (b). The end of the rope 9 coming out of the elastic member 5 is drawn out of the hole 13. The elastic member 5 is disposed in a state where it is pushed into the hole 13 and contracted in the radial direction, and is firmly held in the hole 13 by a restoring force associated with its own elasticity.

  Thereafter, as shown in FIG. 3A, the wedge liner 25 of the hydraulic crusher 21 is inserted into the hole 13 above the stuffing 1. FIG. 3A shows one hole 13. The same applies to the following figures.

  The hydraulic crusher 21 is of a wedge type in which the wedge-shaped wedge 23 is pushed in hydraulically to push the wedge liner 25 apart, whereby pressure is applied to the side concrete as shown by the arrow in FIG. 3 (b). Call. At this time, the tip end of the wedge 23 of the hydraulic crusher 21 protrudes downward from the wedge liner 25 to push the upper surface of the elastic member 5 of the stuffing 1. Therefore, the elastic member 5 contracts downward and the upper surface descends.

  When pressure is applied to the side concrete using the hydraulic crusher 21, as shown in FIG. 3 (c), the range of the depth 27 (see FIG. 2 (b)) corresponding to the wedge liner 25 of the hydraulic crusher 21. Concrete around is crushed. Thereafter, as shown in FIG. 3D, when the wedge 23 is returned to its original position, the elastic member 5 extends upward, and the upper surface returns to the original position, that is, the position of the depth 27. The above procedure is performed for each hole 13 of the concrete member 11.

  Next, as shown in FIG. 4 (a), the shredded concrete is removed. At this time, since the upper surface of the elastic material 5 of the stuffing 1 is positioned at the upper end of the hole 13, the glass will not clog the hole 13. Thereafter, the rope 9 is pulled up as shown by the arrow to take out the filling 1 from the hole 13.

  This state is shown in FIG. 4 (b), and the hydraulic crusher 21 is inserted again into the rest of the hole 13 and pressure is applied to the side concrete in the same manner as above to crush it, and the shattered debris is removed. As shown in FIG. 4C, dismantling of the concrete member 11 over the entire depth of the hole 13 is performed.

  As described above, in the first embodiment, by filling the filler 1 in the hole 13 formed in the concrete member 11 and curing it, the glass generated at the time of crushing of the concrete by the hydraulic crusher 21 does not enter the hole 13 Therefore, it is possible to perform the crushing work by the hydraulic crusher 21 a plurality of times and perform dismantling of the concrete member 11 after the drilling work of the holes 13 is finished at one time, and the construction period can be shortened.

  Further, since the filling 1 includes the elastic member 5, the filling 1 can be easily held in the hole 13 by the restoring force associated with its elasticity, and the upper surface of the elastic member 5 of the filling 1 is the tip of the wedge 23 of the hydraulic crusher 21. Since the holes move up and down depending on the position of the holes, the holes 13 will not be clogged with the holes when removing the holes. Furthermore, since the sheet 1 is stacked on the elastic member 5 and the rope 9 is attached to the sheet 7, the sheet 1 can be easily removed from the hole 13.

  However, the present invention is not limited to this. For example, although the elastic material 5 is a urethane material in the present embodiment, the elastic material 5 is not limited to this, and a sponge material made of resin may be used. However, the urethane material is light and has appropriate strength and elasticity, and as described above, has the advantage of being easily held in the hole 13 and easily deformed depending on the position of the tip of the wedge 23. Further, the shapes of the elastic member 5 and the plate member 7 are not limited to the above, and it is possible to make the plane into a polygonal shape. Furthermore, instead of the rope 9, it is also possible to use another linear material such as a rope or a wire.

  Furthermore, as shown in FIG. 5, a sliding material 15 such as grease or a vinyl sheet may be provided between the inner surface of the hole 13 of the concrete member 11 and the elastic material 5 of the filling 1 as needed. This facilitates the placement and removal of the filling 1. Further, it is also possible to provide a connection portion 17 by injection of urethane or a sealing material at an inward corner portion formed by the inner surface of the hole 13 and the upper surface of the elastic material 5 of the filling 1. The connection portion 17 also serves to connect the filling 1 and the inner surface of the hole 13 to close the gap and to prevent the filling 1 from slipping off.

  Furthermore, depending on the depth of the holes 13, it is possible to repeat the above-described process of placing the filling 1 and breaking and removing concrete, and removing the filling 1 several times, whereby the dismantling of the large concrete member 11 is efficient. You can do it well.

  Moreover, although the wedge type hydraulic crusher 21 which has the wedge 23 and the wedge liner 25 was used in this embodiment, a hydraulic crusher is not restricted to this. For example, as shown in FIG. 6A, a hydraulic crusher 31 provided with projections 35 which can be advanced and retracted by hydraulic pressure may be used on the side surface of the rod-like main body 33. The hydraulic crusher 31 inserts the main body 33 into the hole 13 in a state where the projection 35 is retracted, and causes the projection 35 to project from the main body 33 as shown in FIG. Can be crushed.

  Hereinafter, another example of the present invention will be described as second and third embodiments. In each embodiment, a configuration different from that of the first embodiment will be described, and the same configuration will be denoted by the same reference numeral in the drawings and the like, and detailed description will be omitted.

Second Embodiment
In the second embodiment, as shown in FIG. 7, the filler 1a is made of the elastic material 5a, and is disposed from the position of the depth 27 of the hole 13 to the bottom surface. As described above, the elastic member 5a is a columnar urethane material.

  At the time of dismantling the concrete member 11, the hydraulic crusher 21 is inserted into the hole 13 above the stuffing 1a as shown in FIG. 8 (a) as described above, and the hydraulic crusher as shown by the arrow in FIG. 8 (b). Use 21 to pressure the side concrete. At this time, the tip end of the wedge 23 protrudes downward from the wedge liner 25 and pushes the upper surface of the elastic member 5a, and the elastic member 5a contracts downward and the upper surface descends.

  When pressure is applied to the side concrete using the hydraulic crusher 21, the concrete in the range of depth 27 (see FIG. 7) corresponding to the wedge liner 25 is broken as shown in FIG. 8 (c). Further, by returning the wedge 23, the elastic member 5a extends upward, and the upper surface thereof returns to the original position.

  After this, as shown in FIG. 8 (d), the shredded concrete is removed. At this time, the upper surface of the elastic member 5a is at the upper end of the hole 13, and the hole 13 is not clogged when removing the dust.

  Thereafter, the elastic material 5a is pulled in the direction of the arrow to take out the filling 1a from the hole 13, and the hydraulic crusher 21 is reinserted into the rest of the hole 13 as in the first embodiment. The pressure is applied to the concrete of the other side and it becomes a flow to crush and remove. Thereby, dismantling of the concrete member 11 over the full depth of the hole 13 is performed.

Third Embodiment
In the third embodiment, as shown in FIG. 9, the filler 1 b is formed of a disk-shaped plate 7, and the upper surface of the plate 7 is disposed at the depth 27 of the hole 13. A rope 9 is passed through a hole 4 (see FIG. 2 (a)) provided in the plate 7, and a knot is made at the end of the rope 9 coming out of the lower surface of the plate 7 as in the first embodiment. It is hooked to four. The other end of the rope 9 is pulled out of the hole 13 so that the plate 7 is supported in the above-mentioned position.

  When disassembling the concrete member 11, the hydraulic crusher 21 is inserted into the hole 13 above the stuffing 1b as shown in FIG. 10 (a) as described above, and the hydraulic crusher as shown by the arrow in FIG. 10 (b). Use 21 to pressure the side concrete. At this time, the support of the plate 7 by the rope 9 is slightly loosened, and when the tip of the wedge 23 protrudes downward from the wedge liner 25, the plate 7 is pushed down.

  When pressure is applied to the side concrete using the hydraulic crusher 21, the concrete in the range of depth 27 (see FIG. 9) corresponding to the wedge liner 25 is crushed as shown in FIG. 10 (c). Further, by returning the wedges 23 and pulling the ropes 9 slightly, the upper surface of the plate 7 is returned to the original position.

  After this, as shown in FIG. 10 (d), the shredded concrete is removed. At this time, the upper surface of the plate member 7 is at the upper end of the hole 13, and the hole 13 is not clogged when removing the dust.

  Thereafter, the rope 9 is pulled up in the direction of the arrow to take out the filling 1b from the hole 13, and the hydraulic crusher 21 is inserted again into the rest of the hole 13 as in the first embodiment. The pressure is applied to the concrete in order to break it and remove it. Thereby, dismantling of the concrete member 11 over the full depth of the hole 13 is performed.

  In the third embodiment, the plate 7 is supported from above by the rope 9, but an elastic body such as a spring is provided between the plate 7 and the bottom of the hole 13 to support the plate from the bottom of the hole 13. You may Also in this case, the upper surface of the plate 7 can be moved up and down according to the position of the tip of the wedge 23 of the hydraulic crusher 21 as described above.

  Also in the second and third embodiments, as in the first embodiment, since the glazing generated at the time of crushing of the concrete by the hydraulic crusher 21 does not enter the holes 13, the drilling operation of the holes 13 is completed at one time. After that, the crushing work by the hydraulic crusher 21 can be performed a plurality of times, and the concrete member 11 can be disassembled, and an effect such as shortening of the work period can be obtained.

  Although the embodiments of the present invention have been described above with reference to the attached drawings, the technical scope of the present invention is not influenced by the embodiments described above. It is apparent that those skilled in the art can conceive of various changes or modifications within the scope of the technical idea described in the claims, and they are naturally also within the technical scope of the present invention. It is understood that it belongs.

1, 1a, 1b ...... 詰 3, 4, 13 ...... 孔 5, 5a ...... elastic material 7 ...... plate material 9 ...... rope 11 ...... concrete member 21, 31 ...... hydraulic crush Machine 23 ...... Wedge 25 ...... Wedge liner 27 ...... Depth 33 ...... Main body 35 ...... Protrusion

Claims (4)

Forming a hole of a predetermined depth from the surface of the concrete member (a);
Placing a filler in the hole (b);
(C) inserting a hydraulic crusher above the filling in the hole and applying pressure to the side concrete using the hydraulic crusher to crush the concrete;
Removing the concrete after crushing and removing the filling (d);
Inserting the hydraulic crusher into the remaining part of the hole, applying pressure to the side concrete using the hydraulic crusher to crush it, and removing the crushed concrete (e);
The concrete member to dismantle by,
A disassembling method characterized in that the filling is a plate material stacked on an elastic material and a linear material attached to the plate material . Disassembling method of claim 1, wherein said elastic member is a urethane material. The disassembling method according to claim 1 or 2 , wherein in the step (c), the upper surface of the filling moves up and down according to the position of the tip of the hydraulic crusher. The disassembling method according to any one of claims 1 to 3 , wherein the step (b) to the step (d) are repeated according to the depth of the hole.

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