JP2016175018A - Disassembling method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a disassembling method of a concrete member for efficiently disassembling.SOLUTION: A predetermined depth hole 13 is formed from a surface of a concrete member 11, and a packing object 1 is arranged in its middle. A hydraulic crusher 21 is inserted into the upper hole 13 of the packing object 1, and the concrete is crushed and removed by applying pressure to side concrete by using the hydraulic crusher 21. The packing object 1 is taken out of the hole 13 thereafter, and the hydraulic crusher 21 is inserted again into a residue of the hole 13, and the concrete is crushed and removed by applying the pressure to the side concrete by using the hydraulic crusher 21.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a method for dismantling a concrete member.

  Conventionally, as a method for dismantling a concrete member, a concrete member is punctured, a hydraulic crusher is disposed in the hole, and the concrete is crushed by applying pressure to the side concrete with the hydraulic crusher (for example, Patent Document 1). See).

JP 2014-084561 A

  However, in a crushing operation using a general wedge-type hydraulic crusher, crushing can only be performed at a depth of about 550 mm at a 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. However, when crushing work in several stages, the glass enters the hole after crushing once. Therefore, the work of re-drilling the hole occurs and the efficiency is poor.

  The present invention has been made in view of the above-described problems, and an object thereof is to provide a method for demolishing a concrete member that can be efficiently demolished.

  In order to achieve the above-mentioned object, the present invention includes a step (a) of forming a hole having a predetermined depth from the surface of a concrete member, a step (b) of filling the hole with a filling, and the filling of the filling in the hole. A step (c) of inserting a hydraulic crusher upward, applying pressure to the concrete on the side using the hydraulic crusher to crush the concrete, and removing the filler by removing the crushed concrete (d) ) And inserting the hydraulic crusher into the remaining portion of the hole, crushing the side concrete using pressure using the hydraulic crusher, and removing the crushed concrete (e), The demolishing method is characterized in that the concrete member is demolished.

  In the present invention, the filling formed in the hole formed in the concrete member is cured, so that the glass generated when the concrete is crushed by the hydraulic crusher does not enter the hole. It becomes possible to dismantle the concrete member by performing the crushing operation by a plurality of times, and the construction period can be shortened.

It is desirable that the filling includes an elastic material. The elastic material is, for example, a urethane material.
Thereby, a filling can be easily hold | maintained in a hole.

Furthermore, the padding may be one in which a plate material is stacked on the elastic material, and a linear material is attached to the plate material.
Thereby, a filling can be easily taken out from a hole.

In the step (c), it is preferable that the upper surface of the filling is moved up and down according to the position of the tip of the hydraulic crusher.
As a result, even when the tip moves up and down when crushing concrete like a wedge-type hydraulic crusher, the hole is not clogged when removing the glass.

It is desirable to repeat the step (b) to the step (d) according to the depth of the hole.
Thereby, a large concrete member can be disassembled efficiently.

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

The figure which shows the concrete member 11 Figure showing padding 1 The figure which shows the dismantling method of the concrete member 11 The figure which shows the dismantling method of the concrete member 11 The figure which shows the sliding material 15 and the connection part 17 The figure which shows the hydraulic crusher 31 The figure which shows the filling 1a The figure which shows the dismantling method of the concrete member 11 The figure which shows the filling 1b The figure which shows the dismantling method of the concrete member 11

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

[First embodiment]
FIG. 1 is a diagram showing a concrete member 11 to be demolished by the demolishing method according to the embodiment of the present invention, and is a diagram showing a state in which holes 13 are drilled.

  In the present embodiment, a hole 13 having a predetermined depth is formed by drilling from the surface of the concrete member 11 using a rock drill or the like. The actual depth of the hole 13 is not particularly limited, but is at least deeper than the range in which concrete is crushed at once by a hydraulic crusher described later. A plurality of holes 13 are provided at appropriate intervals. The hole 13 has a substantially circular plane, and its diameter is, for example, about 100 mm.

  In this embodiment, before crushing with a hydraulic crusher, a filling is packed in the middle of the hole 13. FIG. 2A shows the filling 1. The filling 1 has an elastic material 5, a plate material 7, and the like.

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

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

  The plate material 7 is stacked under the elastic material 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 made at the end of the rope 9 that has left the plate member 7 and is hooked into the hole 4 so that the rope 9 is attached to the plate member 7.

  The filling 1 is disposed in the middle of the hole 13 as shown in FIG. The upper surface of the elastic material 5 of the filling 1 is at the position of the depth 27 of the hole 13 shown in FIG. The end of the rope 9 coming out of the elastic material 5 is drawn out of the hole 13. The elastic member 5 is arranged in a state of being pressed into the hole 13 and contracted in the radial direction, and is firmly held in the hole 13 by a restoring force accompanying 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 filling 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 a wedge-shaped wedge 23 is pushed in by hydraulic pressure to expand the wedge liner 25, and as a result, pressure is applied to the side concrete as shown by the arrows in FIG. Call. At this time, the tip of the wedge 23 of the hydraulic crusher 21 protrudes downward from the wedge liner 25 and pushes the upper surface of the elastic material 5 of the stuffing 1, so that the elastic material 5 is contracted downward and the upper surface is lowered.

  When pressure is applied to the side concrete using the hydraulic crusher 21, the range of the depth 27 (see FIG. 2 (b)) corresponding to the wedge liner 25 of the hydraulic crusher 21 as shown in FIG. 3 (c). The concrete around is crushed. Thereafter, when the wedge 23 is returned to the original position as shown in FIG. 3D, 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 glass after the concrete is crushed is removed. At this time, since the upper surface of the elastic material 5 of the stuffing 1 is located at the upper end of the hole 13, the glass does not clog the hole 13. Thereafter, the rope 9 is pulled up as indicated by the arrow, and the filling 1 is taken out from the hole 13.

  This state is FIG. 4 (b), and the hydraulic crusher 21 is inserted again into the remainder of the hole 13, and the side concrete is crushed by applying pressure to the same as described above, and the crushed glass is removed. 4 (c), the concrete member 11 is disassembled over the entire depth of the hole 13.

  As described above, in the first embodiment, by filling the filling 13 in the hole 13 formed in the concrete member 11 and curing it, the glass generated when the concrete is crushed by the hydraulic crusher 21 does not enter the hole 13. Therefore, after the drilling operation of the hole 13 is completed once, the concrete member 11 can be dismantled by performing the crushing operation by the hydraulic crusher 21 a plurality of times, and the work period can be shortened.

  Further, since the filling 1 includes the elastic material 5, the filling 1 can be easily held in the hole 13 by the restoring force accompanying the elasticity, and the top surface of the elastic material 5 of the filling 1 is the tip of the wedge 23 of the hydraulic crusher 21. Therefore, the holes 13 are not clogged with the glass when the glass is removed. Further, the filling 1 can be easily taken out from the hole 13 because the elastic material 5 is overlapped with the plate material 7 and the rope 9 is attached to the plate material 7.

  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 may be a sponge material made of resin. However, the urethane material is light and has an appropriate strength and elasticity, and has an advantage that it can be easily held in the hole 13 and easily deformed according to the position of the tip of the wedge 23 as described above. Further, the shape of the elastic member 5 and the plate member 7 is not limited to the above, and the plane may be polygonal. Further, instead of the rope 9, other linear materials such as a zile and a wire can be used.

  Further, 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 necessary. Thereby, arrangement | positioning and taking out of the filling 1 become easy. Moreover, it is also possible to provide the connection part 17 by the injection | pouring etc. of urethane or a sealing material in the corner part which the inner surface of the hole 13 and the upper surface of the elastic material 5 of the filling 1 form. The connection portion 17 connects the filling 1 and the inner surface of the hole 13 to close the gap, and also has a role of preventing the filling 1 from sliding down.

  Furthermore, according to the depth of the hole 13, it is also possible to repeat the process of arrangement | positioning of the filling 1, and the crushing and removal of concrete, and the removal of the filling 1 several times, and thereby the dismantling of the big concrete member 11 is efficient. Can do well.

  In this embodiment, the wedge-shaped hydraulic crusher 21 having the wedge 23 and the wedge liner 25 is used, but the hydraulic crusher is not limited to this. For example, you may use the hydraulic crusher 31 which provided the protrusion 35 which can be advanced / retracted hydraulically on the side surface of the rod-shaped main body 33 as shown to Fig.6 (a). In this hydraulic crusher 31, the main body 33 is inserted into the hole 13 with the protrusion 35 retracted, and the protrusion 35 protrudes from the main body 33 as shown in FIG. Can be crushed.

  Hereinafter, other examples of the present invention will be described as second and third embodiments. Each embodiment describes a different configuration from the first embodiment, and the same configuration is denoted by the same reference numeral in the drawings and the like, and detailed description thereof is omitted.

[Second Embodiment]
In the second embodiment, as shown in FIG. 7, the filling 1 a is constituted by the elastic material 5 a and is arranged from the position of the depth 27 of the hole 13 to the bottom surface. As described above, the elastic material 5a is a cylindrical urethane material.

  When the concrete member 11 is disassembled, the hydraulic crusher 21 is inserted into the hole 13 above the filling 1a as shown in FIG. 8 (a) and the hydraulic crusher as shown by the arrow in FIG. 8 (b). 21 is used to apply pressure to the concrete on the side. At this time, the tip of the wedge 23 protrudes downward from the wedge liner 25 and pushes the upper surface of the elastic material 5a, and the elastic material 5a contracts downward and the upper surface is lowered.

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

  Thereafter, as shown in FIG. 8 (d), the crushed glass after the concrete is crushed 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 with the glass when the glass is removed.

  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 inserted again into the remainder of the hole 13 as in the first embodiment. The pressure is applied to the concrete of the other side to crush and remove. Thereby, the concrete member 11 is disassembled over the entire depth of the hole 13.

[Third embodiment]
In the third embodiment, as shown in FIG. 9, the filling 1 b is constituted by a disk-shaped plate material 7, and the upper surface of the plate material 7 is disposed at the position of the depth 27 of the hole 13. A rope 9 is passed through the hole 4 (see FIG. 2A) provided in the plate material 7, and a knot is made at the end of the rope 9 protruding from the lower surface of the plate material 7 in the same manner as in the first embodiment. Be hooked to four. The other end of the rope 9 is pulled out of the hole 13, whereby the plate material 7 is supported at the above position.

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

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

  Thereafter, as shown in FIG. 10 (d), the glass after the concrete is crushed 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 with the glass when the glass is removed.

  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 remainder of the hole 13 as in the first embodiment. The pressure is applied to the concrete to crush and remove. Thereby, the concrete member 11 is disassembled over the entire depth of the hole 13.

  In the third embodiment, the plate member 7 is supported by the rope 9 from above. However, an elastic body such as a spring is provided between the plate member 7 and the bottom surface of the hole 13 so that the plate member 7 is supported from the bottom surface of the hole 13. It may be. Also in this case, the upper surface of the plate member 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.

  In the second and third embodiments, as in the first embodiment, since the glass generated when the concrete is crushed by the hydraulic crusher 21 does not enter the hole 13, the hole 13 can be drilled once. Later, the crushing operation by the hydraulic crusher 21 can be performed a plurality of times, and the concrete member 11 can be dismantled, so that the construction period can be shortened.

  As mentioned above, although embodiment of this invention was described referring an accompanying drawing, the technical scope of this invention is not influenced by embodiment mentioned above. It is obvious for those skilled in the art that various modifications or modifications can be conceived within the scope of the technical idea described in the claims, and these are naturally within the technical scope of the present invention. It is understood that it belongs.

1, 1a, 1b ......... Filling 3, 4, 13 ......... Hole 5, 5a ......... Elastic material 7 ...... Plate material 9 ......... Rope 11 ......... Concrete member 21, 31 ......... Hydraulic crushing Machine 23 ……… Wedge 25 ……… Wedge liner 27 ……… Depth 33 ……… Main body 35 ……… Protrusions

Claims (6)

Forming a hole having a predetermined depth from the surface of the concrete member;
Placing the filling in the holes (b);
Inserting a hydraulic crusher above the filling in the hole, applying pressure to the side concrete using the hydraulic crusher, and crushing the concrete (c);
Removing the crushed concrete and removing the filling (d);
Inserting the hydraulic crusher into the remaining part of the hole, crushing the concrete on the side using the hydraulic crusher, and removing the crushed concrete (e);
A demolishing method, comprising demolishing a concrete member by the method.   The disassembling method according to claim 1, wherein the filling includes an elastic material.   The disassembling method according to claim 2, wherein the elastic material is a urethane material.   The disassembling method according to claim 2 or 3, wherein the filling is obtained by stacking a plate material on the elastic material and attaching a linear material to the plate material.   The disassembling method according to any one of claims 1 to 4, wherein in the step (c), an upper surface of the filling is moved up and down according to a position of a tip of the hydraulic crusher. 6. The disassembling method according to claim 1, wherein the step (b) to the step (d) are repeated according to the depth of the hole.

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