JP5927835B2 - How to remove deposits - Google Patents

Description

  The present invention relates to a deposit removal method for removing deposits covering a horizontal member existing in a hollow space of a building, for example, provided with an elevator.

As a hollow space of a building, for example, there is an elevator shaft configured such that a car moves up and down in an interior space that is long in the vertical direction. The elevator has a so-called multiple elevator system in which multiple cars are arranged in parallel on the left and right sides. The elevator shaft of the multiple elevator system moves up and down independently of each other for each car. An elevating space is provided so that it can be performed.
In addition, asbestos constructed for the purpose of fire-resistant coating of steel frames may remain in the elevator shaft as it is attached to the steel frame, and such asbestos is harmless, such as removing it as soon as possible before scattering. It is necessary to apply a process.
As a method for removing deposits in the elevator shaft, for example, a method of cleaning dust such as cotton dust as deposits is known (see, for example, Patent Document 1).

JP 2007-145448 A

Generally, when removing asbestos in a building, it is obliged to form a work space that is isolated and sealed with a curing sheet or the like, and to perform the removal work therein. However, in the case of a multiple elevator as described above, if the entire elevator shaft is isolated and sealed, all the elevators cannot be used, which is extremely inconvenient. For this reason, it is desirable to isolate and seal at least one elevator space so that at least one elevator can be removed in an operating state.
However, in the case of a multiple elevator, the interval between two lift spaces adjacent in the left-right direction is narrow, and a horizontal member such as a plurality of beams and intermediate beams is provided between the two lift spaces. In some cases. Thus, unless the entire elevator shaft is isolated and sealed between two adjacent lifting spaces, there is a problem that the deposit cannot be removed in one of the adjacent lifting spaces and the elevator cannot be operated on the other. is there.

  The present invention has been made in view of such conventional problems. The object of the present invention is to divide into a plurality of spaces even in a hollow structure provided with a horizontal member whose outer peripheral portion is covered with deposits. Thus, an object of the present invention is to provide a method for removing deposits that can remove the deposits.

In order to achieve such an object, the deposit removal method of the present invention comprises:
Between two raising / lowering spaces in the hollow structure having an internal space in which a plurality of raising / lowering spaces for moving up and down the object are arranged in the left-right direction, and between the two parts that form the inner space and face each other in the front-rear direction A horizontal member whose outer peripheral portion is covered with deposits, and for removing the deposits,
A plurality of the horizontal members are provided at intervals in the vertical direction,
A gap is provided between the two horizontal members that are spaced apart from each other in the vertical direction, between the deposits covering each of the horizontal members, and between the two opposing portions. And a wall main body holding step for holding the wall main body that partitions the hollow structure into a front work space from which the deposits are removed first and a rear work space from which the deposits are removed later at the two opposing portions. When,
A closing step of closing a gap between the adhering matter covering the horizontal member and the two opposing portions and a peripheral portion of the wall body with a closing member;
A pretreatment step of removing the deposit on the side of the previous work space;
A remodeling step of restructuring the closing member so as to close the space between the horizontal member from which the deposits have been removed and the peripheral edge of the wall body;
After the replacement process, a post-processing step of removing the deposit on the post-work space side;
Have
The closing member is
An upper and lower closing member comprising a portion that abuts on the horizontal member side, and a portion that is fixed to a peripheral portion of the wall body;
A side closing member comprising a portion that abuts one of the two opposing portions, and a portion that is fixed to the peripheral edge of the wall body;
Have
In the closing step, the upper and lower closing members and the side closing member are fixed to the peripheral edge of the wall body from the previous work space side,
In the replacement step, the upper and lower blocking members and the side blocking member are fixed to the peripheral edge of the wall body from the rear work space side .

  According to such a method for removing deposits, the wall main body partitions the front work space and the rear work space, and covers the horizontal member with the closing member, and the two opposing parts. And the peripheral part of the wall main body are closed, and the deposit on the side of the previous work space is removed, so that it is possible to prevent the removed deposit from scattering outside the previous work space. . At this time, the removed deposits do not scatter in the rear work space, so the rear work space can be used regardless of the work for removing the deposits in the previous work space.

  In addition, after the pretreatment process in which the deposits are first removed on the side of the previous work space, the blocking member is replaced and the gap between the horizontal member from which the deposits are removed and the peripheral portion of the wall body is blocked. Since the deposit is removed on the work space side, the removed deposit does not scatter in the previous work space. For this reason, the previous work space can be used regardless of the work of removing the deposits in the rear work space. As described above, there is provided a deposit removal method capable of separating deposits by dividing into a plurality of spaces even in a hollow structure provided with a horizontal member whose outer peripheral portion is covered with deposits. It is possible.

In this method of removing the deposit, it is preferable that the two opposing portions are both non-combustible solidified products, and the wall body is held by an anchor provided on the non-combustible solidified products.
According to such a method for removing deposits, the wall body is held by anchors provided on two opposing members made of cement composition such as reinforced concrete and ALC plate and non-combustible solidified material such as plaster board. It is possible to securely hold the wall body between the horizontal members. In particular, since it is not held on the horizontal member side, the wall body can be formed without touching the deposit.

In this method of removing the deposit, the upper and lower blockages are provided by providing a scattering prevention sheet on the surface of the deposit covering the horizontal member, and blocking between the deposit and the peripheral edge of the wall body. The member is preferably brought into contact with the scattering prevention sheet.
According to the method for removing such deposits, the scattering prevention sheet provided on the surface of the deposit, since abut the upper and lower closing member that closes the space between the periphery of the deposits and the wall body, the upper and lower closing member Does not touch the deposits directly. For this reason, it is possible to prevent the deposits from being scattered even when the upper and lower closing members are provided.

In this method for removing adhered matter, it is preferable that the anchor is provided in a portion of the non-combustible solidified material where the scattering prevention sheet is provided.
The incombustible solidified material is not covered with the adhering material, but it is provided in the same hollow structure as the horizontal member covered with the adhering material. There is also a risk that the deposits are scattered. Therefore, as described above, by providing an anchor on the portion of the non-combustible solidified material where the anti-scattering sheet is provided, even if the adherent is attached to the surface of the non-combustible solidified material, Can be prevented.

In such a method for removing deposits, it is desirable that the upper and lower closing members can be adjusted in width in the vertical direction.
The gap between the horizontal member and the peripheral edge of the wall body is different in width in the vertical direction before and after the deposit is removed. For this reason, if it is possible to adjust the width in which the upper and lower closing members closing between the horizontal members positioned above and below the wall main body can be adjusted in the vertical direction, the gap becomes wide by removing the deposits on the front work space side. Even if it removes in the back work space side, it is possible to block | close and partition the space | gap which expanded in the pre-processing process by adjusting the width | variety obstruct | occluded by the up- and- down obstruction | occlusion member .

In this method of removing deposits, the upper and lower blocking members include a wall body fixing member that is fixed to the wall body, and a contact fixing that is in contact with the horizontal member side and joined to the wall body fixing member. It is desirable that the wall main body fixing member and the abutting fixing member are joined to correspond to the gap between the horizontal member and the wall main body.
According to such a method for removing deposits, the upper and lower closing members that close the space between the horizontal member and the peripheral portion of the wall main body are brought into contact with the wall main body fixing member fixed to the wall main body and the horizontal member side. The abutting fixing member joined to the wall main body fixing member, even if the width of the gap between the horizontal member and the wall main body changes, the abutting fixing member abuts on the horizontal member side. In this state, by joining with the wall main body fixing member, it is possible to close in accordance with the changed width.

  According to the present invention, there is provided a deposit removal method capable of separating deposits by dividing into a plurality of spaces even in a hollow structure provided with a horizontal member whose outer periphery is covered with deposits. It is possible to provide.

It is an image figure for demonstrating the elevator shaft provided with the partition wall of this embodiment. It is the schematic of the cross section for demonstrating the hollow structure provided with the partition wall of this embodiment. It is a flowchart which shows the procedure of the removal method of the deposit | attachment concerning this embodiment. It is a longitudinal cross-sectional view for demonstrating the foundation | substrate provided between the steel beams located up and down in the removal method of the deposit | attachment which concerns on this embodiment. It is a plane sectional view showing the wall body provided between the reinforced concrete pillar and the side wall of the ALC board in the deposit removal method according to this embodiment. It is a front view which shows the foundation | substrate supported by the anchor on the reinforced concrete pillar and the side wall of the ALC board in the deposit removal method which concerns on this embodiment. It is a longitudinal cross-sectional view which shows the wall main body provided between the steel beam located up and down. It is a longitudinal cross-sectional view which shows the state which obstruct | occluded between the asbestos which coat | covers the upper and lower steel beam, and a wall main body with the obstruction | occlusion member. It is a front view which shows the partition wall provided in the side wall of the reinforced concrete structure pillar and the ALC board in the removal method of the deposit | attachment which concerns on this embodiment. It is a longitudinal cross-sectional view which shows the state which removed the asbestos of the front work space side. It is a longitudinal cross-sectional view which shows the state which removed the side part obstruction | occlusion member, the wall main body fixing member, and the contact fixing member from the wall main body, and replaced | exchanged from the back work space side. It is a longitudinal cross-sectional view which shows the state by which rock wool was given to the front work space side of the steel beam from which asbestos was removed. It is a longitudinal cross-sectional view which shows the partition wall provided from the back work space side. It is a longitudinal cross-sectional view which shows the state which removed the asbestos on the back work space side. It is a longitudinal cross-sectional view which shows the state which the removal of asbestos and restoration of fireproof coating were completed.

Hereinafter, an example of the deposit removal method of the present embodiment will be described in detail with reference to the drawings.
In the present embodiment, an elevator shaft will be described as an example of the internal space of the hollow structure to which the deposit to be removed is adhered.

  Drawing 1 is an image figure for explaining an elevator shaft provided with a partition wall of this embodiment. FIG. 2 is a schematic cross-sectional view for explaining a hollow structure provided with a partition wall according to the present embodiment.

  The method for removing deposits of the present embodiment is asbestos as deposits already sprayed as a fireproof coating covering the steel beam 22 as a horizontal member in the elevator shaft EVS as an example of the internal space of the hollow structure 10. 31 (FIG. 4) is a method of removing detoxification treatment for asbestos 31 and fireproofing by applying rock wool 46 (FIG. 12) as a new deposit different from asbestos 31 to the detoxified portion as a fireproof coating. A description will be given including the covering process. The steel beam 22 is provided between an exposed reinforced concrete (RC) column 23 and a side wall 28 of an exposed ALC (Autoclaved Light weight Concrete) plate.

  In the following explanation, as shown in the figure, in three directions orthogonal to each other, the direction in which the car moves up and down in the elevator shaft is the vertical direction (vertical direction), and the wall surface is provided with an opening for getting on and off the car The direction along the left-right direction (horizontal direction) and the direction that becomes the depth direction with respect to the car are described as the front-rear direction (horizontal direction).

=== About Elevator EV ===
As shown in FIG. 1, the elevator EV includes an elevator shaft EVS that is partitioned into a part of a building such as a building, and a car 13 that is guided so as to be vertically movable along the vertical direction in the elevator shaft EVS. A hoisting machine 19 which is disposed in a machine room MR above the elevator shaft EVS and moves up and down while hanging the car 13 using a suspension rope R having a counterweight W.

  As shown in FIG. 2, the elevator EV is a so-called triple elevator EV, and three elevator cars 13 are provided in the elevator shaft EVS in parallel in the left-right direction. Are lifted and lowered independently along the lift spaces TR (TRL, TRC, TRR) by the hoisting machines 19 installed in the machine room MR.

  The elevator shaft EVS is a rectangular parallelepiped space that is long in the vertical direction. Specifically, a steel beam 22 in which a part of a column beam structure constructed by assembling a steel beam 22, a column 23, and an intermediate beam is provided between floors, and a side wall 28 of a concrete panel such as an ALC plate, Thus, the column beam frame of the elevator shaft EVS is constructed by being partitioned into a substantially rectangular parallelepiped shape that is long in the vertical direction. The elevator shaft EVS has an elevator shaft between a left elevator space (TRL) and a central elevator space (TRC) among the elevator spaces TR of three passenger cars 13 provided in parallel in the left-right direction. Covered with asbestos 31 between the side wall 28 of the ALC plate as the incombustible solidified material provided on the front side of the EVS, that is, the entrance / exit side, and the reinforced concrete column 23 as the incombustible solidified material provided on the rear side. A steel beam 22 made of H-shaped steel is provided. That is, two opposing portions where the steel beam 22 is provided are a side wall 28 made of an ALC plate facing the column 23 and a reinforced concrete column 23. Here, the incombustible solidified material is not limited to ALC plates or reinforced concrete columns, but the incombustible solidified material does not contain at least asbestos 31.

  The upper and lower ends of the four side walls 28 of the elevator shaft EVS have an upper slab lower surface 10a and a lower slab upper surface 10b, respectively. Everything is a closed space.

  The front side wall 28 of the four side walls 28 has an opening 28a for the elevator EV corresponding to each car 13 and each floor of the building, and each landing door 28a has An open / close door 29 that slides left and right is provided. Therefore, when the opening / closing door 29 is opened in a state where there is no car 13, the interior of the elevator shaft EVS is in communication with the elevator hall EVH, which is a space on the building side.

  As can be seen from the above, a steel beam 22 is provided between the reinforced concrete column 23 and the side wall 28 in the elevator shaft EVS. For such steel members, fireproof coating is indispensable so that the steel frames are not exposed under the Building Standards Act, and asbestos 31 as described above has been used as the material. For this reason, asbestos may be exposed in the existing elevator shaft EVS even now.

  For such asbestos, for example, a detoxification process is performed in conjunction with the facility renewal work for the existing elevator EV. As detoxification treatment, removal treatment such as peeling off asbestos, removal treatment such as peeling off asbestos, confinement treatment to harden the surface of the application part by chemical solution application etc. and contain asbestos on the spot, furthermore, asbestos adhesion part with plate material etc. For example, an enclosing process for enclosing and not exposing to the outside.

  In any processing, it is obliged to isolate and seal the working space WS so that asbestos does not scatter around.

  However, in the case of the multiple elevators EV such as the above-described triple type, if the entire elevator shaft EVS is isolated and sealed and cured, all the elevator EVs cannot be used and become extremely inconvenient, so at least one elevator EV is operated. It is desirable that the detoxification process can be performed while the state is maintained.

  For this reason, it is required to partition the interior of the elevator shaft EVS horizontally to the left and right to divide the work space WS in units of the car 13, that is, the elevator space TR (elevator EV). However, the space between adjacent lift spaces in the elevator shaft EVS is narrow, and particularly when the steel beam 22 is provided as in the elevator shaft EVS of the present embodiment, on the outside of the steel beam 22 in the horizontal direction, It is difficult to secure a space for hermetically dividing the elevating space, for example, providing a partition wall. Moreover, since the steel beam 22 arrange | positioned between adjacent raising / lowering space TR is covered with the deposit | attachment which should be processed, it is difficult to attach a partition to the steel beam 22. FIG.

  Therefore, the partition wall 30 of the present embodiment is a car outside the work space WS by the partition wall 30 that can be hermetically partitioned into a plurality of spaces even in the hollow structure 10 provided with the steel beam 22. 13 (elevation space TR, elevator EV) is secured.

== Method for Treating Deposits Including Deposit Removal Method According to this Embodiment ===
FIG. 3 is a flowchart showing the procedure of the deposit removal method according to the present embodiment. FIG. 4 is a vertical cross-sectional view for explaining the base provided between the steel beams positioned above and below in the deposit removal method according to the present embodiment. FIG. 5 is a plan sectional view showing a wall body provided between a reinforced concrete column and a side wall of an ALC plate in the deposit removal method according to the present embodiment. FIG. 6 is a front view showing a foundation supported by anchors on a reinforced concrete column and a side wall of an ALC plate in the deposit removal method according to the present embodiment.

  In the present embodiment, in the elevator shaft EVS of the triple elevator EV in which three passenger cars 13 are provided in parallel on the left and right, the elevator 13 is provided between the leftmost lift space TRL and the central lift space TRC. It is assumed that the asbestos 31 covering the steel beam 22 provided above and below is removed between the RC column 23 and the side wall 28 of the ALC plate facing the column 23. . The removal method of the deposit | attachment of this embodiment is performed in the procedure as shown in FIG.

  When performing the removal process of the asbestos 31 covered with the steel beams 22 arranged above and below, first, the leftmost elevating space TRL serving as the rear work space WSA and the center elevating as the preceding work space WSB A partition wall 30 is installed between the space TRC.

  The partition wall 30 is installed between the steel beams 22 provided between the floors between the leftmost lift space TRL and the central lift space TRC. In the following description, the periphery of the steel beam 22, the RC column (hereinafter referred to as a column) 23, and the side wall 28 of the ALC plate will be mainly described in order to clarify the installation method of the partition wall. Also, the central lift space TRC is referred to as a pre-work space WSB that performs processing first, and the left lift space TRL is referred to as a post-work space WSA that performs processing after the pre-work space WSB.

  When installing the partition wall 30, first, the car 13, the suspension rope R, and the like located in the processing target lifting space TR (here, the previous work space WSB) are removed. Then, as shown in FIG. 1, the suspension wire 73 is suspended from the upper slab lower surface 10 a of the hollow structure 10 into the processing target lifting space TR. In addition, the work gondola 71 is carried onto the lower slab upper surface 10 b of the elevator shaft EVS, and the lower end of the suspension wire 73 is set on the hoisting machine 75 of the work gondola 71. Thereby, the work gondola 71 is in a usable state in the lift space TR of the elevator EV to be processed. The operator performs the removal process of the asbestos 31 and the fireproof coating process while moving the work gondola 71. The elevator shaft EVS is provided with a dust collector that sucks air in the work space in order to ventilate the work space.

  When installing the partition wall 30, first, as shown in FIG. 4, assuming the position where the partition wall 30 is formed, the upper and lower steel beams 22, columns 23, and side walls 28 covered with asbestos 31 are provided. The anti-scattering sheet 38 is attached to the inner peripheral surface of the space surrounded by

  In this operation, the operation proceeds while sucking the suction port of the vacuum cleaner with the HEPA filter toward the place where the scattering prevention sheet 38 is adhered. At this time, the width of the anti-scattering sheet 38 to be adhered is sufficiently wider than the width of the partition wall 30 to be formed.

  Next, the lightweight steel members 32 are attached along the vertical direction so as to face the pillars 23 and the side walls 28 at the positions where the anti-scattering sheet 38 is stuck on the faces where the pillars 23 and the side walls 28 face each other.

  The lightweight steel member 32 attached to the column 23 and the side wall 28 has a U-shaped cross section and is formed to have a length shorter by about 400 mm than the distance between the surfaces of the asbestos 31 covering the upper and lower steel beams 22. . In addition, a portion corresponding to the bottom of a light-weight shaped steel material 32 (hereinafter referred to as a vertical light-weight shaped steel material) 32 having a U-shape, that is, a groove shape, is provided with a mounting hole (not shown) through which an anchor 24 described later is penetrated at appropriate intervals. ) Is provided.

  When attaching the vertical lightweight steel material 32 to the pillar 23 and the side wall 28, first, as shown in FIG. A plurality of anchors 24 made of screw rods are screwed together with the interval between the mounting holes of the vertical lightweight steel material 32 and are loosened with nuts 25. Further, a positioning / fixing nut 25 for the vertical lightweight steel member 32 is screwed at a position of about 30 mm from the surface of the column 23 and the side wall 28.

  Next, the U-shaped two vertically lightweight steel members 32 are arranged so that the opened sides face each other, and the anchor 24 in which the positioning / fixing nut 25 is screwed is inserted into the mounting hole, Further, the vertical lightweight steel material 32 is fixed by screwing the fixing nut 25. In this state, the distance between the upper end of the vertical lightweight steel 32 supported by the pillar 23 and the side wall 28 and the anti-scattering sheet 38 attached to the surface of the asbestos 31 covering the upper steel beam 22; The distance between the lower end portion and the anti-scattering sheet 38 attached to the surface of the asbestos 31 covering the lower steel beam 22 is substantially equal.

  Next, a light-weight steel material (hereinafter referred to as a horizontal light-weight steel material) 33 having a C-shaped cross section between open facing portions of the vertical light-weight steel material 32 supported by the pillars 23 and the side walls 28. Are arranged with both ends of the horizontal lightweight steel member 33 inserted and fixed to the vertical lightweight steel member 32 with screws to form the base 35 of the partition wall 30. In the present embodiment, the upper and lower ends of the vertical lightweight steel material 32 and the three horizontal lightweight steel materials 33 provided at substantially equal intervals between them are arranged at the upper and lower ends. The shaped steel members 33 are arranged so that the opened sides face each other. For this reason, the C-shape arranged at the top and bottom, that is, the portion corresponding to the bottom of the horizontal lightweight steel material 33 having a groove shape, is scattered on the asbestos 31 covered with the steel beam 22. It arrange | positions so that the prevention sheet | seat 38 may be faced. As described above, the base 35 obtained by joining the vertical lightweight steel 32 and the horizontal lightweight steel 33 is supported by the pillars 23 and the side walls 28 as shown in FIG.

  Next, the pet sheet 36 is attached to the entire surface of the base 35 from the previous work space WSB side, that is, the central lift space TRC side of the formed base 35 using, for example, double-sided tape.

FIG. 7 is a longitudinal sectional view showing a wall body provided between steel beams positioned above and below.
Next, as shown in FIG. 7, a galvalume steel plate 37 is screwed to the base 35 to which the pet sheet 36 is adhered from the central lift space TRC side. At this time, since the galvalume steel plate 37 is narrower than the area of the base 35, the plurality of galvanium steel plates 37 are screwed to the base 35 so that the end portions thereof overlap each other and the entire surface of the base 35 is covered. The galvalume steel plate 37 is provided with a plurality of recesses along the longitudinal direction at a predetermined interval, but the adjacent galvalium steel plates 37 are arranged such that the recesses provided at the ends of each other overlap each other. Here, the work from the work of providing the anchors 24 to the pillars 23 and the side walls 28 to the work of screwing the Galvalume steel plate 37 corresponds to the wall main body holding step S1.

  Next, as shown in FIG. 5, in order to close the space between the pillar 23 and the side wall 28 and the wall main body 34 in which the vertical lightweight steel 32 and the galvalume steel plate 37 are integrated, a side closing member as a closing member is provided. 40 is fixed to the wall body 34. The side closing member 40 has an L-shape having a vertical fixing plate portion 40a screwed to the wall body 34 and a side contact plate portion 40b extending substantially at right angles from the tip of the vertical fixing plate portion 40a. Is a sheet metal member. As shown in FIG. 5, the side closing member 40 has the vertical fixing plate portion 40a walled in a state where the side contact plate portion 40b is in contact with the scattering prevention sheet 38 attached to the pillar 23 and the side wall 28. Screw the body 34. At this time, the vertical fixing plate portion 40a is brought into contact with the galvanium steel plate 37 on the front work space WSB side of the wall main body 34, that is, the central lifting space TRC side, and the side contact plate portion 40b is brought into contact with the vertical fixing plate portion 40a. It is located on the rear work space WSA side, that is, on the left lift space TRL side. In addition, since the vertical width of the side closing member 40 is sufficiently narrower than the interval between the upper and lower steel beams 22, the side closing member 40 is used to close the space between the column 23 and the side wall 28 and the wall body 34. The side closing members 40 that use a plurality of 40 and are adjacent to each other in the vertical direction are arranged to overlap each other and are screwed to the wall body 34.

FIG. 8 is a longitudinal sectional view showing a state in which the space between the asbestos covering the upper and lower steel beams and the wall body is closed by a closing member.
Next, as shown in FIG. 8, in order to close the space between the asbestos 31 covering the upper and lower steel beams 22 and the wall main body 34 having the vertical lightweight steel material 32 and the galvalume steel plate 37, The vertical closing member 41 is fixed to the wall body 34. Since the upper and lower closing members 41 differ only in the vertical direction when attached to the upper part of the wall main body 34 and when attached to the lower part, here, the case where they are attached mainly to the upper part will be described as an example.

  The vertical closing member 41 includes a wall main body fixing member 42 screwed to the end of the wall main body 34 in which the Galvalume steel plate 37 and the base 35 are integrated, and an anti-scattering sheet 38 or a steel beam bonded to the asbestos 31. 22 is a sheet metal member having an abutment fixing member 43 that abuts on the wall 22 and is screwed to the wall main body fixing member 42.

  The wall body fixing member 42 includes a wall surface fixing portion 42a that is abutted against an end portion of one side surface of the wall body 34 and is screwed, and a horizontal light weight shape that extends from the edge of the wall surface fixing portion 42a and is at the uppermost position. A horizontal connecting portion 42b extending along the upper surface of the steel material 33 or the lower surface of the horizontal lightweight steel material 33 at the lowermost position, and a vertically extending portion extending from the edge of the horizontal connecting portion 42b to the side opposite to the wall surface fixing portion 42a. 42c are provided so as to be substantially perpendicular to each other.

  The contact fixing member 43 includes a horizontal fixing plate portion 43a screwed to the wall main body fixing member 42, and a flat contact plate portion 43b extending substantially at right angles from the tip of the horizontal fixing plate portion 43a. This is a sheet metal member having a letter shape.

  When attaching the upper and lower closing member 41, first, the wall fixing part 42a is brought into contact with the galvalume steel plate 37 with the horizontal connecting part 42b of the wall main body fixing member 42 along the upper surface of the horizontal lightweight steel member 33. Stop it. Then, as shown in FIG. 8, the abutting fixing member 43 fixes the horizontal fixing plate portion 43a to the wall main body in a state where the flat abutting plate portion 43b is in contact with the scattering prevention sheet 38 attached to the asbestos 31. A screw is fixed to the vertically extending portion 42c of the member 42. At this time, the lateral fixing plate portion 43a is brought into contact with the galvanium steel plate 37 on the front work space WSB side of the wall main body 34, that is, the central lifting space TRC side, and the flat contact plate portion 43b is brought into contact with the lateral fixing plate portion 43a. It is located on the rear work space WSA side, that is, on the left lift space TRL side.

  Further, since the horizontal width of the wall main body fixing member 42 and the contact fixing member 43 is sufficiently narrower than the distance between the pillar 23 and the side wall 28, the asbestos 31 covering the upper and lower steel beams 22 and the wall main body 34. In order to close the gap between the wall main body fixing member 42 and the contact fixing member 43, the wall main body fixing member 42 and the contact fixing member 43 adjacent to each other in the horizontal direction partially overlap each other. It arrange | positions in this way and it is screwed to the wall main body 34.

  After the side blocking member 40, the wall main body fixing member 42 and the contact fixing member 43 are attached to the wall main body 34, the contact portions of the side blocking member 40 with the anti-scattering sheet 38 on the pillars 23 and the side walls 28, The sealing material 39 is filled from the central lifting space TRC side into the contact portion between the contact fixing member 43 and the scattering prevention sheet 38 of the asbestos 31 covering the upper and lower steel beams 22.

  Thereafter, a curing sheet having a rigidity lower than that of the pet sheet 36 so as to cover the entire surface of the partition wall 30 from the central lift space TRC side and to cover the entire periphery of the anti-scattering sheet 38 with which the edge of the partition wall 30 is in contact. Affix 50. At this time, the pet sheet 36 may be used. However, since the curing sheet 50 having low rigidity is easier to follow along the surface of the partition wall 30, a wider working space can be secured. Here, the operation of attaching the curing sheet 50 after attaching the side closing member 40 and the upper and lower closing members 41 and filling the sealing material 39 corresponds to the closing step S2.

FIG. 9 is a front view showing a partition wall provided on a reinforced concrete column and a side wall of an ALC plate in the deposit removal method according to the present embodiment.
In this state, the partition wall 30 that partitions the front work space WSB and the rear work space WSA as shown in FIG. Here, filling of the sealing material 39 and sticking of the curing sheet 50 covering the wall main body 34 from the previous work space WSB side are also included in the closing process.

  After the front work space WSB and the rear work space WSA are partitioned in a sealed state by the partition wall 30, in the rear work space WSA, the elevator car 13 is moved up and down to operate the elevator EV, and dry ice blasting is performed in the front work space WSB. The removal process of asbestos 31 is executed by the construction method (pre-processing step S3).

  When the asbestos 31 is removed, first, a gap such as the landing entrance 28a with respect to the previous work space WSB is hermetically sealed with a polyethylene sheet or the like. The lower slab upper surface 10b is covered and covered with a curing sheet 50 over the entire surface, and the dust collector is operated to keep the work space WS in a negative pressure state.

  Next, on the side of the central lift space TRC, which is the previous work space WSB, while approaching the work gondola 71, approach the attachment portion of the asbestos 31 covering the steel beam 22 in the previous work space WSB. The asbestos 31 on the space WSB side is scraped off with a spatula or the like, and the remaining asbestos 31 is removed using a dry ice blasting apparatus. Then, a liquid scattering inhibitor is sprayed on the exposed portion of the asbestos 31 removed.

FIG. 10 is a longitudinal sectional view showing a state in which asbestos on the previous work space side is removed. FIG. 11 is a longitudinal sectional view showing a state where the side closing member, the wall main body fixing member, and the contact fixing member are removed from the wall main body and replaced from the rear work space side.
As shown in FIG. 10, after removing the asbestos 31 in the previous work space WSB, the curing sheet 50 covering the entire partition wall 30 is peeled off from the previous work space WSB, and the side closing member 40, the wall body fixing member 42, and The contact fixing member 43 is removed from the wall main body 34 and replaced from the rear work space WSA side (replacement step S4).

  In this case, as shown in FIG. The side fixing member 40 is placed on the wall main body 34 on the rear work space WSA side in a state where the side contact plate 40b is in contact with the scattering prevention sheet 38 attached to the pillar 23 and the side wall 28. Secure with screws. At this time, the vertical fixing plate portion 40a is brought into contact with the rear work space WSA side of the wall body 34, that is, the surface of the base 35 on the left raising / lowering space TRL side, and the side contact plate portion 40b is brought into contact with the vertical fixing plate portion 40a. It is positioned on the further work space WSB side, that is, on the central lift space TRC side.

  Further, with the horizontal connecting portion 42b of the wall main body fixing member 42 along the upper surface of the horizontal lightweight steel member 33, the wall fixing portion 42a is brought into contact with the surface on the left lifting space TRL side of the base 35 and screwed. Keep it. Then, as shown in FIG. 11, the abutting fixing member 43 fixes the horizontal fixing plate portion 43a to the wall main body in a state where the flat abutting plate portion 43b is brought into contact with the steel beam 22 exposed by removing the asbestos 31. A screw is fixed to the vertically extending portion 42c of the member 42.

  After the side blocking member 40, the wall main body fixing member 42, and the contact fixing member 43 are attached to the wall main body 34, the contact portion between the side blocking member 40 and the anti-scattering sheet 38 on the pillar 23 and the side wall 28, The seal material 39 is filled from the left elevating space TRL side into the contact portion between the contact fixing member 43 and the exposed upper and lower steel beams 22. The other procedures of the side closing member 40, the wall main body fixing member 42, and the contact fixing member 43 at the time of replacement are the same as those for attaching from the previous work space WSB.

FIG. 12 is a longitudinal sectional view showing a state in which rock wool has been applied to the front work space side of the steel beam from which asbestos has been removed.
After the side closing member 40, the wall main body fixing member 42, and the contact fixing member 43 are replaced from the previous work space WSB to the rear work space WSA side, as shown in FIG. Rock wool 46 is sprayed as a new fireproof covering material on the sprayed portion, and the asbestos processing in the previous work space WSB is completed.

Next, asbestos removal processing on the rear work space WSA side is executed.
In the processing on the rear work space WSA side, in order to operate the elevator EV in the central lift space TRC, first, as in the case of the central lift space TRC, the car 13 and the suspension rope R in the left lift space TRL are first used. Remove etc. Then, the suspension wire 73, the work gondola 71, the hoisting machine 75 of the work gondola 71, the dust collector and the like are removed from the central lift space TRC in which the removal process of the asbestos 31 has already been completed and set in the left lift space TRL. In addition, the elevator EV is operated by setting the car 13 and the suspension rope R in the central lift space TRC.

FIG. 13 is a longitudinal sectional view showing a partition wall provided from the rear work space side.
Next, as shown in FIG. 13, the left and right scattering prevention sheets 38 and the upper and lower steel beams 22 that cover the entire surface of the partition wall 30 and are in contact with the edges of the partition wall 30 from the left elevating space TRL side. The curing sheet 50 is pasted so as to extend over.

FIG. 14 is a longitudinal sectional view showing a state where asbestos on the rear work space side is removed.
Next, on the left elevating space TRL side which is the rear work space WSA, while approaching the work gondola 71, the rear work space WSA approaches the attachment portion of the asbestos 31 covering the steel beam 22, and the rear work The asbestos 31 on the side of the space WSA is scraped off with a spatula or the like, and the remaining asbestos 31 is removed using a dry ice blasting device, resulting in a state as shown in FIG. 14 (post-processing step S5).

FIG. 15 is a longitudinal sectional view showing a state in which the asbestos treatment is completed.
When the removal of the asbestos 31 is completed in the post-work space WSA, as shown in FIG. 15, the liquid anti-scattering agent is sprayed on the exposed portion of the asbestos 31, and the anti-scattering agent is sprayed on the exposed portion. Rock wool 46 is sprayed as a new fireproof covering material.

  After the spraying of the rock wool 46 is completed, the wall main body 34, the curing sheet 50, the side closing member 40, the wall main body fixing member 42, and the contact fixing member 43, that is, the partition wall 30 are removed. At this time, the contact fixing member 43 is removed so as to be pulled out from between the rock wool 46 sprayed in the previous work space WSB and the rock wool 46 sprayed in the rear work space WSA. After the contact fixing member 43 is removed, as shown in FIG. 15, the contact fixing member between the rock wool 46 sprayed in the previous work space WSB and the rock wool 46 sprayed in the rear work space WSA. Since a gap corresponding to the thickness of 43 is generated, the gap is filled with rock wool 46 and repaired. FIG. 15 shows a state in which the rock wool 46 is filled in the gap. When the repair of the rock wool 46 is completed, the processing of the asbestos 31 in the left elevating space TRL and the central elevating space TRC is completed.

  According to the asbestos 31 removal method of the present embodiment, the wall main body 34 divides the preceding work space WSB and the rear work space WSA and covers the steel beam 22 with the upper and lower closing members 41, And since the asbestos 31 by the side of the prior | preceding work space WSB is removed after closing between the pillar 23 and the side wall 28 which oppose, and the peripheral part of the wall main body 34, the removed asbestos 31 scatters outside. Can be prevented. At this time, since the removed asbestos 31 does not scatter in the rear work space WSA, the rear work space WSA can be used regardless of the asbestos 31 removal work in the previous work space WSB. In addition, after the pretreatment step S3 in which the asbestos 31 has been removed first on the side of the work space WSB, the blocking members 40 and 41 are replaced, and the steel beam 22 from which the asbestos 31 has been removed and the peripheral portion of the wall main body 34. Since the asbestos 31 is removed on the rear work space WSA side after the gap is closed, the removed asbestos 31 is not scattered into the previous work space WSB. Therefore, the previous work space WSB can be used regardless of the asbestos 31 removal work in the rear work space WSA. As described above, the asbestos 31 removal method can be divided into a plurality of spaces and removed asbestos 31 even in the hollow structure 10 provided with the steel beam 22 whose outer peripheral portion is covered with the asbestos 31. Can be provided.

  Moreover, since the wall main body 34 is held by the opposing pillars 23 made of non-combustible solidified material and the anchors 24 provided on the side walls 28, the wall main body 34 can be reliably held between the steel beams 22. In particular, since it is not held on the steel beam 22 side, the wall body 34 can be formed without touching the asbestos 31.

  Further, since the upper and lower closing member 41 that closes the space between the asbestos 31 and the peripheral portion of the wall main body 34 is brought into contact with the scattering prevention sheet 38 provided on the surface of the asbestos 31, the upper and lower closing member 41 directly touches the asbestos 31. Absent. For this reason, it is possible to prevent the asbestos 31 from scattering when the upper and lower closing members 41 are provided.

  The column 23 and the side wall 28 are not covered with the asbestos 31, but are provided in the same hollow structure 10 as the steel beam 22 covered with the asbestos 31, so that the asbestos 31 was attached to the steel beam 22. At this time, asbestos 31 may be scattered on the pillars 23 and the side walls 28. For this reason, even if the asbestos 31 adheres to the surface of the pillar 23 and the side wall 28 by providing the anchor 24 from above the scattering prevention sheet 38 provided on the surface of the pillar 23 and the side wall 28 as described above. It is possible to prevent the asbestos 31 from scattering.

  Further, since the side closing member 40 and the upper and lower closing members 41 are fixed from the previous work space WSB side when removing in the previous work space WSB, when the removal in the previous work space WSB is finished, the previous work It is possible to remove the side closing member 40 and the upper and lower closing members 41 from the space WSB side, and when removing on the rear work space WSA side, replace the side closing member 40 and the upper and lower closing members 41 to the side portion. Since the closing member 40 and the upper and lower closing members 41 are fixed from the rear work space WSA side, when each process in the rear work space WSA is finished, the side closing member 40 and the upper and lower closing members 41 are opened from the rear work space WSA side. Can be removed. For this reason, the asbestos 31 can be efficiently removed by replacing the side closing member 40 and the upper and lower closing members 41.

  In addition, since the side block member 40 and the upper and lower block members 41 are replaced after the asbestos 31 is removed in the previous work space WSB, the upper and lower block members 41 that replace the gap generated by removing the asbestos 31 are replaced. It is possible to close with. For this reason, when the asbestos 31 is removed on the rear work space WSA side, it is possible to work by partitioning the previous work space WSB and the rear work space WSA in a closed state.

  In addition, the gap between the steel beam 22 and the peripheral edge of the wall body 34 is different in width in the vertical direction before and after the asbestos 31 is removed. For this reason, if the width | variety which the upper-and-lower obstruction | occlusion member 41 obstruct | occluded between the steel beam 22 located up and down of the wall main body 34 can be adjusted in an up-down direction, even if removal of the asbestos 31 by the front work space WSB side is possible. Even when the gap becomes wider, the width that is closed by the upper and lower closing members 41 is adjusted when the removal is performed on the rear work space WSA side, thereby closing and partitioning the gap that has been widened in the pretreatment step S3. It is possible.

  In addition, an upper and lower closing member 41 that closes between the asbestos 31 and the peripheral edge of the wall main body 34 is in contact with the wall main body fixing member 42 that is fixed to the wall main body 34 and the steel beam 22 side. 42, the abutment fixing member 43 is joined to the wall main body fixing member 42 in a state where the abutment fixing member 43 is in contact with the asbestos 31 side. It is possible to reliably close in correspondence with the gap between the wall main body 34.

=== Other Embodiments ===
As mentioned above, although embodiment of this invention was described, this invention is not limited to this embodiment, The deformation | transformation as shown below is possible in the range which does not deviate from the summary.

  In the above-described embodiment, the elevator shaft EVS is shown as an example of the internal space of the hollow structure 10. However, the present invention is not limited to this, and is not limited to this. A structure having an endless orbit for moving up and down a plurality of automobiles in a space) may be applied to this as a hollow structure. That is, in the internal space of the tower parking, a plurality of orbits are provided in parallel on the left and right in the horizontal direction, and each orbit can be independently orbited.

  In this embodiment. Although the horizontal member is the steel beam 22, it is not limited to this and may be an intermediate beam, for example.

  In the said embodiment, although the example in which the steel beam 22 was provided between the pillar 23 and the side wall 28 was demonstrated, a horizontal member with the steel beam 22 is a cement composition, a plaster board, etc., such as columns or side walls. As long as it is provided between the parts made of non-combustible solidified material.

  In the present embodiment, the new fireproof coating material applied to the steel beam 22 from which the asbestos 31 has been removed is the rock wool 46. However, the present invention is not limited to this. For example, the fireproof material is covered with a sheet and formed into a mat shape. A wound fireproof covering material such as Machibe (registered trademark) manufactured by NICHIAS Corporation may be used. In this case, since the mat-like member is screwed, workability is good, and almost no dust is generated after construction. In addition, the gap between the fireproof covering material attached in the previous work space WSB and the fireproof covering material attached in the rear work space WSA is only overlapped and fixed with a seal covering the fireproof material. Excellent workability.

  In the above-described embodiment, the curing sheet 50 is described as a single sheet. However, the present invention is not limited to this, and the curing sheet 50 is composed of a plurality of sheets of appropriate sizes, and these are joined together by an adhesive tape or the like. You may enlarge to the magnitude | size of said partition wall 30. FIG. In addition, the curing sheet is not necessarily provided as long as a sufficient sealed space can be formed simply by overlapping wall members such as the galvalume steel plate 37. Moreover, you may fill with the sealing material in the seam of the piled wall member.

  Moreover, the wall member which attaches to the foundation | substrate 35 and partitions off space is not restricted to the Galvalume steel plate 37, What is necessary is just a board | plate material match | combined with the elevator shaft EVS to install. For example, in the case of an elevator in which a car is moved up and down at high speed in an adjacent lift space, it is desirable to use a highly rigid plate material as the wall surface material because the partition wall receives high wind pressure. Moreover, although the lightweight shape steel material 32 was used as the square pipe material, it is not restricted to this, The steel material according to the elevator shaft EVS to install may be used. Also in this case, in the case of an elevator in which the car is moved up and down at high speed in the adjacent lifting space, it is desirable to use a steel material having high rigidity as the base material because the partition wall receives high wind pressure. The same applies to other materials used.

  In the above-described embodiment, the case where asbestos removal is performed in a state where there is no car 13 in the elevator shaft EVS is illustrated, but asbestos removal may be performed in a state where the car 13 is present in the elevator shaft EVS.

  In the above-described embodiment, the work gondola 71 is brought into the elevator shaft EVS to perform asbestos processing work. However, the passenger car 13 provided in each elevator EV (elevating space TR) is used instead of the work gondola 71. May be. That is, an operator may get on the roof surface of the car 13 and perform the processing work.

  The above embodiment is for facilitating the understanding of the present invention, and is not intended to limit the present invention. The present invention can be changed and improved without departing from the gist thereof, and it is needless to say that the present invention includes equivalents thereof.

10 hollow structure, 10a lower surface of upper slab, 10b upper surface of lower slab,
19 hoisting machine, 22 steel beam, 23 pillars (one of two facing parts),
24 anchors, 25 nuts, 28 side walls (the other of the two opposing parts),
28a platform entrance, 29 doors, 30 partitions, 31 asbestos,
32 Lightweight vertical steel, 33 Lightweight horizontal steel, 34 Wall body, 35 Substrate,
36 Pet sheet, 37 Galvalume steel plate, 38 Splash prevention sheet,
39 sealing material, 40 side closing member, 40a vertical fixing plate part,
40b side contact plate part, 41 top and bottom closing member, 42 wall body fixing member,
42a Wall surface fixing part, 42b Horizontal connecting part, 42c Vertically extending part,
43 abutting fixing member, 43a lateral fixing plate portion, 43b plane abutting plate portion,
46 rock wool, 50 curing sheet, 71 gondola, 73 wire,
75 hoisting machine,
EV elevator, EVH elevator hall, EVS elevator shaft,
MR machine room, R rope, TR lift space, TRC center lift space,
TRL left elevating space, TRR right elevating space,
WS working space, WSA working space, WSB working space

Claims (6)

Between two raising / lowering spaces in the hollow structure having an internal space in which a plurality of raising / lowering spaces for moving up and down the object are arranged in the left-right direction, and between the two parts that form the inner space and face each other in the front-rear direction A horizontal member whose outer peripheral portion is covered with deposits, and for removing the deposits,
A plurality of the horizontal members are provided at intervals in the vertical direction,
A gap is provided between the two horizontal members that are spaced apart from each other in the vertical direction, between the deposits covering each of the horizontal members, and between the two opposing portions. And a wall main body holding step for holding the wall main body that partitions the hollow structure into a front work space from which the deposits are removed first and a rear work space from which the deposits are removed later at the two opposing portions. When,
A closing step of closing a gap between the adhering matter covering the horizontal member and the two opposing portions and a peripheral portion of the wall body with a closing member;
A pretreatment step of removing the deposit on the side of the previous work space;
A remodeling step of restructuring the closing member so as to close the space between the horizontal member from which the deposits have been removed and the peripheral edge of the wall body;
After the replacement process, a post-processing step of removing the deposit on the post-work space side;
Have
The closing member is
An upper and lower closing member comprising a portion that abuts on the horizontal member side, and a portion that is fixed to a peripheral portion of the wall body;
A side closing member comprising a portion that abuts one of the two opposing portions, and a portion that is fixed to the peripheral edge of the wall body;
Have
In the closing step, the upper and lower closing members and the side closing member are fixed to the peripheral edge of the wall body from the previous work space side,
In the replacement step, the upper and lower blocking members and the side blocking member are fixed to the peripheral edge of the wall body from the rear work space side. The method for removing deposits according to claim 1,
The two opposing parts are both incombustible solidified products,
A method for removing deposits, wherein the wall main body is held by an anchor provided on the incombustible solidified material. It is the removal method of the deposit | attachment of Claim 1 or Claim 2, Comprising:
A scattering prevention sheet is provided on the surface of the deposit covering the horizontal member,
The method for removing deposits, characterized in that the upper and lower blocking members that block between the deposits and the peripheral edge of the wall main body are brought into contact with the scattering prevention sheet. It is a removal method of the deposit | attachment of Claim 2, Comprising:
A scattering prevention sheet is provided on the surface of the deposit covering the horizontal member,
The said anchor is provided in the part in which the said scattering prevention sheet is provided of the said incombustible solidified material, The removal method of the deposit | attachment characterized by the above-mentioned. It is a removal method of the deposit | attachment in any one of Claim 1 thru | or 4, Comprising:
The adhering matter removing method, wherein the vertical closing member is capable of adjusting a closing width in the vertical direction. It is a removal method of the deposit | attachment in any one of Claim 1 thru | or 5, Comprising:
The upper and lower closing members are wall main body fixing members fixed to the wall main body,
A contact fixing member that is in contact with the horizontal member side and joined to the wall body fixing member;
Have
The said wall main body fixing member and the said contact fixing member are joined corresponding to the space | gap between the said horizontal member and the said wall main body, The removal method of the deposit | attachment characterized by the above-mentioned.