JP6041148B2 - Member holding device for cutting and demolition and building demolition method using the same - Google Patents

Description

  The present invention relates to a member holding device for cutting and dismantling and a building dismantling method, and in particular, a member holding for holding these members when cutting and disassembling RC and / or SRC column members and beam members. The present invention relates to a device and a building demolition method using the same.

  For example, when a building such as an office building is dismantled, if the building is an S structure (steel structure), building components such as floors, beams, columns, walls, etc. are broken down into pieces or broken into individual pieces and crushed. Garbage and waste materials are dropped from the opening to the ground floor using a crusher, and then transported and dismantled. For example, when the site is small or the building is high-rise, a tower crane is used as a lifting machine, and the building is dismantled sequentially from the upper floor.

  More specifically, when dismantling an S structure building, steel beams and columns such as H-shaped steel are preliminarily supported by supporting works and plates, and a cutting machine such as a gas burner or a hydraulic excavator is used. The steel member is disassembled by cutting using a dismantling work machine in which the attachment is changed from the bucket to the cutter. Alternatively, when the steel member is cut with a gas burner or the like, the steel member to be cut and disassembled is supported with a lifting machine such as a tower crane, and the remaining steel portion is completely cut and separated in this state. A steel member is suspended on the ground by a lifting machine (see, for example, Patent Document 1).

  On the other hand, when dismantling RC (reinforced concrete) and / or SRC (steel reinforced concrete) buildings, a dismantling machine (crusher) in which the attachment of a hydraulic excavator is changed from a bucket to a breaker is generally used. Concrete is crushed, and the internal steel frames and reinforcing bars are cut with a cutting machine such as a gas burner, or the attachment is replaced with a cutter and cut.

  However, when an RC or SRC building is crushed or cut using a breaker or cutter, there will be significant noise and vibrations, and dust will be scattered, which will adversely affect the environment in the vicinity and at the work site. Is big. For this reason, depending on the situation around the dismantling site, it may be required to interrupt the work or to shorten the work time. Furthermore, there are cases in which pillars and walls collapse during the dismantling operation, and the RC and SRC dismantling work requires special attention in terms of safety.

  Moreover, in order to fracture | rupture a large sized steel frame member, a large sized dismantling work machine (crusher) is needed. Furthermore, it is often necessary to reinforce the work floor to withstand the weight of this large heavy machine. In this case, for example, the floor is reinforced by temporary support work from the lower floor, and then the target floor is dismantled. I need it. Also, when breaking a large steel frame, the cutter blade of the demolition work machine is often missing, and in the RC and SRC demolition work, attachments are frequently replaced, which is also a high cost. Become.

  On the other hand, the method of cutting | disconnecting concrete, a steel frame, and a reinforcing bar simultaneously using a wire saw (wire saw apparatus), and demolishing building components, such as RC structure, SRC structure beam, a pillar, and a wall, is put into practical use. . In the wire saw device, an endless wire saw is wound around a plurality of pulleys, and the wire saw is sequentially rotated in one direction by driving of a drive pulley. Then, by cutting this rotating wire saw, it is possible to cut and cut RC and SRC building components, and to suppress the generation of noise and vibration, dust scattering, etc. Can proceed.

  In general, when a building component member is cut with a wire saw device, the wire saw is wound around the member to be cut in advance, and the rotating wire saw is cut from the back side of the member. The member is cut while pulling on (while pulling). That is, it is easy to adjust the cutting force of the wire saw at the time of cutting, and it is possible to easily obtain a desired cutting force. To cut off.

JP 2012-1902 A

  However, when the RC or SRC building components are cut and disassembled with the wire saw device of the pulling method, the member to be cut is arranged inside the endless wire saw during the cutting operation. In addition, an apparatus installation work is required in which a wire saw is wound around and set in advance on a member to be cut. And the apparatus installation work around which this wire saw is wound, including the setup change during the work, took a lot of time and labor, which was one factor that deteriorated the work efficiency.

  Moreover, since the member is cut while attracting the wire saw, a reaction force for attracting the wire saw is required. For this reason, for example, a setup such as fixing the main body portion of the wire saw device to a member to be cut with an anchor is necessary, and this setup work is also a factor that deteriorates the work efficiency. Furthermore, the wire saw is cut and cut from the back side of the member to be cut by the operator on the side of the wire saw device operation, so during the setup and work such as cooling water supply and adjustment of the water discharge direction It also takes a lot of effort to adjust.

  Furthermore, when a wire saw is wound around a member to perform a cutting operation, the long wire saw is rotated in an open environment during the cutting operation. For this reason, especially when cutting pillar members with a wire saw, the safety of the work, such as ensuring the stability of the wire saw and regulating the access of others to the periphery of the cutting work, is required. It takes a lot of labor to take measures to ensure the above.

  In addition, when a wire saw is wound around a member to perform cutting work, at least two workers are required, and it is possible to perform cutting work by one worker, which improves work efficiency. From the point of cost reduction, it was desired.

  Furthermore, when transporting and removing the cut block-shaped member with a lifting machine such as a tower crane, it is immediately and easily put on the stake at the stage of cutting (cutting) the member so as to leave a part during the cutting operation. Unlike the S structure, which is completely cut with a cutting machine such as a gas burner, and the members are suspended by a lifting machine, when cutting the RC structure or SRC structure with a wire saw device, the weight of the member is large. Therefore, it is necessary to support the material securely, and it is not possible to adopt a suspension system as in the case of cutting and dismantling the S-shaped member.

  In particular, the RC and SRC column members are heavy, so it is important to hold them securely during the cutting operation. For this reason, a large temporary support is provided separately to support the member to be cut such as a column member, or the member to be cut such as a column member is always suspended and supported from the start of cutting by a crane. Therefore, it becomes necessary to perform the cutting work. And a large temporary support work requires a lot of materials, it takes a lot of labor and time for replacement and installation, and when carrying out the cutting work by always hanging and supporting from the start of cutting with a crane As a result, the crane stop time becomes longer, and the working efficiency is significantly deteriorated.

  In addition, it is necessary to consider the occurrence of earthquakes during dismantling work, and in particular, it was desired to develop a method for securely and efficiently holding heavy-weight RC and SRC column members and beam members. .

  In view of the above circumstances, the present invention makes it possible to reliably hold building components such as RC and / or SRC pillar members and beam members during cutting and dismantling, generating noise and vibration, and scattering dust. An object of the present invention is to provide a member holding device for cutting and dismantling that enables efficient dismantling while suppressing, and a building dismantling method using the same.

  In order to achieve the above object, the present invention provides the following means.

  The member holding device for cutting and disassembling according to the present invention is a member holding device for cutting and dismantling for holding the building component when cutting the building component of RC and / or SRC. A holding beam portion that extends to the holding beam portion, is engaged with the building component member, and the holding beam portion is disposed above the building component member to be cut. And at least two engagement holding portions that are held in a state of extending in the lateral direction, and are provided so as to be detachably connected to the holding beam portion, and are wound around the building constituent member to be cut and the building to be cut A winding holding member for holding the constituent member and a suspension part provided to be connected to the holding beam part and for connecting and hanging the cable body are characterized.

  In this invention, at least two engagement holding portions are engaged with building structural members such as RC and / or SRC column members and beam members, so that the holding beam portion is laterally moved above the building structural members. Can be arranged. Then, by wrapping the wrapping holding member provided in the holding beam portion around the building component to be cut below, the building component to be cut can be held by the holding beam portion via the wrapping holding member. it can.

  As a result, it is possible to cut the building component using the wire saw device in a push-cut manner, and it is possible to securely hold the building component that has been cut and separated by the member holding device. Moreover, a rope, such as a wire rope of a crane, can be connected to the hanging portion, and the building components separated by cutting can be transported and removed together with the member holding device.

  In the member holding device for cutting and disassembling according to the present invention, it is desirable that the engagement holding portion is provided so as to be able to advance and retreat in the extending direction of the holding beam portion.

  In this invention, since the engagement holding part is connected to the holding beam part so as to be able to advance and retreat, the engagement holding part can be installed at an arbitrary position. Thereby, by adjusting the position of the engagement holding part as appropriate according to the distance between the pair of column members (building component members), the length of the beam member (building component member) to be cut, the width of the column members, etc. It is possible to reliably hold the engagement holding portion with the building component and hold the holding beam portion in a state of being disposed above the building component to be cut and extending in the lateral direction. .

  Furthermore, in the member holding device for cutting and disassembling according to the present invention, it is more preferable that the engagement holding portion is detachably connected to the holding beam portion.

  In this invention, since the engagement holding part is detachably connected to the holding beam part, the number of the engagement holding parts provided in the holding beam part and the building component to be engaged are further increased. A corresponding engagement holding portion can be selected and attached freely. That is, an engagement holding portion for a column member to be engaged with a column member, an engagement holding portion for a beam member to be engaged with a beam member, an engagement holding portion for a wall member to be engaged with a wall member, etc. It is possible to select and use an engagement holding unit that matches the target. Moreover, the selection which does not use an engagement holding part can also be performed. Therefore, the versatility of the member holding device for cutting and disassembling can be greatly improved.

  In the member holding device for cutting and disassembling according to the present invention, the engagement holding portion includes an opening that opens downward, and an upper end portion of the building component member is inserted into the opening. More preferably, it is configured to engage the component.

  In this invention, when the cable body is connected to the suspension part and the member holding device for cutting and dismantling is suspended and installed on the building component to be cut, the building structure is formed in the opening while being suspended. The engagement holding part can be engaged with the building component by a simple operation of inserting the upper end of the member, and the engagement holding part can be engaged and held with the building component more reliably and easily. It is possible to hold the beam portion in a state of being disposed above the building component to be cut and extending in the lateral direction.

  Furthermore, in the member holding device for cutting and disassembling according to the present invention, the supporting column portion is connected to the holding beam portion and / or the engagement holding portion, extends downward and is grounded to support the holding beam portion. It is desirable to have.

  In the present invention, for example, when a beam member (building component) is cut and disassembled, one engagement holding portion is changed to a column member (building component) according to the length (span length) of the beam member, and the other engagement. It may be necessary to install a member holding device for cutting and disassembling by engaging the combined holding portion with the beam member. In such a case, by connecting the supporting column part to the engaging holding part that engages the beam member or the beam member side of the holding beam part, it is for cutting and dismantling at the supporting column part together with the holding beam part and the engaging holding part. Thus, it becomes possible to reliably support the member holding device, and thus the building components separated by cutting, in a stable state.

  In the member holding device for cutting and disassembling according to the present invention, it is more preferable that the support column portion is provided detachably connected to the holding beam portion and / or the engagement holding portion.

  In this invention, the support pillar portion is provided so as to be detachably connected, and accordingly, the holding beam portion and the engagement holding portion together with the member holding device for cutting and dismantling, and eventually the building components separated by cutting are supported. The support post can be used only when it is necessary to do so. For example, when the holding beam portion and the engagement holding portion are installed in a predetermined manner, but there is time until the cutting operation is started, the building component is not cut (cut), so the support column portion is At the time of cutting work, it is possible to attach a support column portion and support a member holding device for cutting and dismantling and a building component member that has been cut and separated. Thereby, until the cutting work is started, the support pillar portion does not interfere with the passage of workers and equipment.

  In addition, it is connected by hanging a rope such as a wire rope of a crane to the suspension part, and when carrying out the removal of the building components cut and separated together with the member holding device, the supporting column part is removed to carry the work. Can be easily performed.

  Furthermore, in the member holding device for cutting and disassembling according to the present invention, it is more desirable that the support column portion is formed so as to be extendable in the vertical direction or to be divided / coupled.

  In the present invention, the length of the support column portion can be freely adjusted by adjusting the number of expansion / contraction or connection. As a result, the length of the support column portion is adjusted according to the installation height of the holding beam portion and the engagement holding portion, so that the member holding device for cutting and dismantling, and eventually the building components separated by cutting can be stably stabilized by the support column portion. It becomes possible to support in the state.

  In the member holding device for cutting and disassembling according to the present invention, a leg portion extending in the lateral direction is provided to connect to the lower end of the support column portion, and at least two of the support column portions are spaced apart from each other to hold the holding beam. And / or connected to the engagement holding portion.

  In this invention, it becomes possible to make the member holding device for cutting and dismantling self-supporting because there are at least two support pillars having legs at the lower end. Thereby, by installing the member holding device for cutting and dismantling so that the building component to be cut is arranged between adjacent support pillars, the building component to be cut is more stable with the member holding device. It becomes possible to hold in a state.

  The building dismantling method of the present invention is a method of dismantling a building constructed with RC and / or SRC building components, using any one of the above member holding devices for cutting and dismantling While holding the building component to be cut, using a wire saw device, the wire saw is cut and separated by a push-cut method in which the wire saw is cut from the front of the building component to the back side, and disassembled. To do.

  In this invention, the member holding device for cutting and disassembling as described above can be obtained.

  In the member holding device for cutting and disassembling according to the present invention, the holding beam portion is formed by engaging at least two engaging holding portions with building components such as RC and / or SRC column members and beam members. It can be arranged laterally above the building components. Then, by wrapping the wrapping holding member provided in the holding beam portion around the building component to be cut below, the building component to be cut can be held by the holding beam portion via the wrapping holding member. it can.

  As a result, it is possible to cut the building component using the wire saw device in a push-cut manner, and it is possible to securely hold the building component that has been cut and separated by the member holding device. Moreover, a rope, such as a wire rope of a crane, can be connected to the hanging portion, and the building components separated by cutting can be transported and removed together with the member holding device.

  And in the member holding device for cutting and dismantling of the present invention and the building dismantling method using the same, the building component to be cut is held in a stable state by the member holding device for cutting and dismantling described above. A building saw member such as an RC structure and / or an SRC pillar member or beam member, which is a main constituent member of a building, can be cut and separated by a push-saw type wire saw device. This makes it possible to greatly reduce the amount of noise, vibration, and dust scattering, and a suitable environment in the neighborhood or work site where work interruptions and shortening of work time are not required as in the past. Can be maintained, and the dismantling work can be carried out efficiently and smoothly.

  In addition, it is possible to cut and separate building components such as pillar members and beam members with a push-cut type wire saw device in this way, so that a wire saw is wrapped around the building component to be cut during cutting work compared to the pulling method. Or the work of fixing the main body of the wire saw device to the member with an anchor becomes unnecessary, and the member can be cut efficiently.

  Further, by using a push-cut type wire saw device, it becomes possible for one worker to perform a member cutting operation, and it is possible to further improve the working efficiency and reduce the cost.

  In addition, the long wire saw does not rotate in an open environment during the cutting operation as in the case of the wire saw device of the pulling method, so that the stability of the wire saw can be ensured, and other parts around the cutting operation can be secured. It is also possible to reduce measures for restricting the entry and exit of workers, that is, measures for ensuring work safety.

  Therefore, according to the member holding device for cutting and dismantling of the present invention and the building dismantling method using the same, it is possible to reliably suppress generation of noise and vibration and scattering of dust in RC and / or SRC buildings. It can be efficiently dismantled, and in particular, can be suitably used for dismantling work in hospitals, schools, and urban areas.

It is a perspective view which shows the state which has demolished the building by the building demolition method which concerns on one Embodiment of this invention. It is a figure which shows the wire saw apparatus used with the building demolition method which concerns on one Embodiment of this invention. FIG. 3 is a view taken along line X1-X1 in FIG. It is a figure which shows the demolition work machine equipped with the wire saw apparatus used with the building demolition method which concerns on one Embodiment of this invention. In the building demolition method which concerns on one Embodiment of this invention, it is a figure which shows the setting state of a part of floor slab member of the one hierarchy to demolish and remove. In the building demolition method which concerns on one Embodiment of this invention, it is a figure which shows the state which disassembled and removed some floor slab members of the one hierarchy. In the building dismantling method according to an embodiment of the present invention, a part of floor slab members in one layer is dismantled and a part of exposed beam members is dismantled and a part of floor slab members of other parts is dismantled. It is a figure which shows the state which removed. In the building dismantling method according to one embodiment of the present invention, a part of the floor slab member in one layer is dismantled and the exposed part of the column member is dismantled and the other part of the floor slab member is dismantled. It is a figure which shows the state which disassembled and removed the beam member exposed by removing. In the building demolition method which concerns on one Embodiment of this invention, a floor slab member, a beam member, and a column member are demolished one by one, and it is a figure which shows the state which has demolished each hierarchy of a building in order from the upper floor. In the building dismantling method which concerns on one Embodiment of this invention, it is a perspective view which shows the dismantling method of a floor slab member. In the building dismantling method which concerns on one Embodiment of this invention, it is a side view which shows the dismantling method of a floor slab member. It is a side view showing the member holding device for cutting and dismantling concerning one embodiment of the present invention. It is a X1-X1 line arrow directional view of FIG. In the building demolition method which concerns on one Embodiment of this invention, it is a side view which shows the demolition work condition of the beam member hold | maintained using the member holding | maintenance apparatus. In the building demolition method which concerns on one Embodiment of this invention, it is a side view which shows the demolition work condition of the beam member hold | maintained using the member holding | maintenance apparatus. In the building demolition method which concerns on one Embodiment of this invention, it is a side view which shows the demolition work condition of the beam member hold | maintained using the member holding | maintenance apparatus. In the building demolition method which concerns on one Embodiment of this invention, it is a side view which shows the demolition work condition of the beam member hold | maintained using the member holding | maintenance apparatus. In the building demolition method which concerns on one Embodiment of this invention, it is a side view which shows the demolition work condition of the beam member hold | maintained using the support member. In the building demolition method which concerns on one Embodiment of this invention, it is a side view which shows the demolition work condition of the beam member hold | maintained using the support member. In the building demolition method which concerns on one Embodiment of this invention, it is a side view which shows the demolition work condition of the beam member hold | maintained using the support member. In the building demolition method which concerns on one Embodiment of this invention, it is a side view which shows the demolition work condition of the wall member which has the beam member and opening which were hold | maintained using the member holding | maintenance apparatus. In the building demolition method which concerns on one Embodiment of this invention, it is a side view which shows the demolition work condition of the beam member and wall member which were hold | maintained using the member holding | maintenance apparatus. In the building demolition method which concerns on one Embodiment of this invention, it is a side view which shows the demolition work condition of the column member hold | maintained using the member holding | maintenance apparatus. In the building demolition method which concerns on one Embodiment of this invention, it is a side view which shows the demolition work condition of the column member hold | maintained using the member holding | maintenance apparatus. In the building demolition method which concerns on one Embodiment of this invention, it is a side view which shows the demolition work condition of the column member hold | maintained using the other member holding | maintenance apparatus. In the building demolition method which concerns on one Embodiment of this invention, it is a figure which shows the holding | maintenance ring member which another member holding | maintenance apparatus comprises. In the building demolition method which concerns on one Embodiment of this invention, it is a figure which shows the driving | operation procedure of a wedge member at the time of cut | disconnecting a pillar member with a push-off type wire saw apparatus, and the attachment procedure of a fixed plate. It is a figure which shows a fixed plate. It is a figure which shows the state which fixed the pillar member cut and separated by the fixing plate. It is a figure which shows the attachment state of a fixed plate. FIG. 32 is a view on arrow X1-X1 in FIG. 31. It is a figure which shows the state which fixed the column member cut and separated with the other fixing plate. It is a figure which shows another fixing plate.

  Hereinafter, with reference to FIG. 1 to FIG. 33, a member holding device for cutting and dismantling according to an embodiment of the present invention and a building dismantling method using the same will be described. Here, in this embodiment, the method of dismantling not only building components that are cut and disassembled using a member holding device for cutting and dismantling but also building components such as floor slab members, beam members, and column members of the entire building. Will be described.

  First, the building to be demolished in the present embodiment is a high-rise building such as an office building, for example, a building column or beam, a building component of a wall or floor (floor slab member, beam member, column member, wall member) Etc.) are constructed by RC and / or SRC. The present invention need not be limited to application to high-rise buildings, and can of course be applied to low-rise buildings.

  In the building dismantling method of this embodiment, the building is appropriately covered with a curing material, and the building is sequentially dismantled from the higher floor (upper floor). In addition, as shown in FIG. 1, for example, a tower crane (lifter) 2 for suspending members disassembled in blocks from the higher floor (upper floor) of the building 1 uses the elevator hall of the building 1 or the like. Standing up. Further, in the present embodiment, a dismantling work place for performing further dismantling / crushing processing (split processing) on the block-shaped member suspended by the tower crane 2 is provided in the land adjacent to the building 1.

  In the building dismantling method of the present embodiment, a wire saw device and a blade cutter device are used as means for cutting and dismantling the building components of the floor slab member 3, the beam member 4, the wall member 5, and the column member 6 of the building 1.

  As shown in FIGS. 2 and 3, the wire saw device 10 according to the present embodiment includes a guide rail 12 projecting linearly from an adapter 11 with a tilt mechanism, and a member to be cut attached to the tip of the guide rail 12. While the gripping mechanism 13 for gripping (the column member 6 and the beam member 4) and the wire saw 16 wound endlessly around the plurality of pulleys 14 and 15 are rotated in one direction by the rotational drive of the drive pulley 15, A cutting mechanism 17 that is guided by the guide rail 12 and moves a part of the wire saw 16 forward and backward is configured.

  In the present embodiment, as shown in FIG. 4, the wire saw device 10 is replaced with an attachment bucket that is detachably attached to the tip of the arm 18 c of the hydraulic excavator, and the dismantling work machine 18 including the wire saw device 10 is provided. Is configured. Further, the dismantling work machine 18 includes a single operator from the driver's seat, a driving operation of the wire saw device 10, a turning operation of the upper turning body 18a of the dismantling work machine 18, a beam 18b provided on the upper turning body 18a, The arm 18c can be laid down and the lower traveling body 18d can be driven (traveling operation).

  Accordingly, the RC member and the RC member 6 and the column member 6 can be operated by appropriately operating the dismantling work machine 18 by freely operating, turning, and arm / beam up / down operation. Any position of the building component can be efficiently cut with the wire saw 16.

  And in the building demolition method of this embodiment, when the building structural member of the building 1 is cut and demolished, the wire saw device 10 is used as much as possible. Further, when the member is cut using the wire saw device 10, the wire saw 16 is wound around the member, the rotating wire saw 16 is attracted to the front, and the drawing method is not cut into the member from the back side. The rotating wire saw 16 is pressed against the member from the near side and cut, and the cut-off method of sequentially cutting to the back side is used as much as possible.

  In this way, in the building dismantling method of the present embodiment, the wire saw device 10 is used in a cut-off manner for cutting and separating the beam member (large beam) 4 inside the building 1 and the column member 6, and the building 1 For cutting and separating the beam member (large beam with wall) 4 and the wall member (entire wall) 5 at the outer peripheral portion, the staircase, etc., a wire saw device of a pulling type is used. Further, for cutting and separating the floor slab member 3, a blade cutter device (road cutter, wall cutter, plunge cutter, etc.) that cuts and rotates a rotating blade is used, and a push-cut method such as a sleeve wall or a descending wall is used. A blade cutter device is used as a member outside the applicable dimensions of the wire saw device 10.

  That is, in the building dismantling method of the present embodiment, in the dismantling work of the high-rise building 1, the most time-consuming and labor is required for the dismantling, and the beam member 4 and the column member 6 of the building 1 that particularly requires attention, A push saw type wire saw device 10 is applied to the separation and separation of the column member 6.

  In this way, in order to apply the push-saw type wire saw device 10 for cutting and separating the beam member 4 and the column member 6 of the building, the building dismantling method of the present embodiment is shown in FIGS. 1 and 5 to 9. As described above, some floor slab members 3 which are building components of the upper floor (one level) 20 are disassembled in advance, and the lower floor (the other layer immediately below the first layer 20) is disassembled by dismantling these floor slab members 3. A part of the column members 6 and the beam members 4 which are 21 building components are exposed.

  Then, the dismantling work machine 18 equipped with the wire saw device 10 is disposed on the lower floor 21 and the exposed beam member 4 and the column member 6 are cut by the push-off method by removing the floor slab member 3 in advance. Separate. Further, the beam member 4 and the column member 6 are cut and separated by a push-off method, respectively, and conveyed and removed to the outside by a tower crane (lifter) 2.

  Further, the wall member (large beam with wall and the entire wall) 5 and the staircase are cut and separated by a wire saw device of a pulling method, and sequentially conveyed and removed by the tower crane 2. Further, members outside the applicable dimensions of the push-saw type wire saw device 10 such as a sleeve wall and a descending wall are cut and separated by a blade cutter device and removed.

  In this way, after disassembling the exposed beam member 4, the column member 6 is disassembled, and the floor slab member 3, the beam member 4, the column member 6, etc. are sequentially disassembled and conveyed and removed to the outside, Dismantle in order from the upper floor.

  Here, the dismantling method for every building structural member is demonstrated more concretely.

[Dismantling of floor slab members]
First, a method for disassembling the floor slab member 3 will be described.

  Conventionally, when dismantling an S-structured floor slab member, the floor slab member is suspended and supported by a tower crane 2 or the like, and the small beam steel is finally cut and separated by a gas burner and removed. And since the small beam steel frame of this S-structure floor slab member can be cut in a short time by using a gas burner, it is possible to reduce the waiting time for the crane 2 to suspend and support the floor slab member. There are few efficiency problems.

  On the other hand, in the case of the RC and SRC floor slab members 3 as in the present embodiment, it takes time to cut the beam, so if the cutting work is performed with the crane 2 suspended and supported, the waiting time of the crane 2 Will be very long. In addition, the holding method when there is no beam is also a problem. For this reason, it is necessary to install a temporary support base (support work) on the floor slab member 3 on the lower floor to support the floor slab member 3 to be cut on the upper floor. A lot of labor, time, and cost are required for replacement and installation. Furthermore, as a staking method for lifting the floor slab member 3, conventionally, a method of providing a cored hole in the floor slab member 3 and passing a bolt and a wire is often used. It takes a lot of work.

  On the other hand, in the building dismantling method of the present embodiment, as shown in FIGS. 10 and 11, the floor slab member 3 is held at the time of cutting work, and at the time of lifting (hanging) by the crane 2, A floor slab holding / suspending member 23 for connecting the cable body 22 is attached to the floor slab member 3 to be cut (disassembled).

  The floor slab holding / suspending member 23 of the present embodiment is provided with, for example, a grooved steel 24 having a U-shaped cross section, and a pair of side wall portions 24a and a bottom plate portion 24b of the grooved steel 24 connected at the ends. And a suspension plate 25 through which a suspension hole 25a for hanging is formed. A bolt insertion hole 24 c is formed through the bottom plate portion 24 b of the channel steel 24. The floor slab holding / suspending member 23 has a desired strength, and the shape is not particularly limited as long as it has the suspension hole 25a and the bolt insertion hole 24c (each at a predetermined position).

  The floor slab holding / suspending member 23 formed in this way attaches a mounting bolt (anchor bolt) 26 to the floor slab member 3 to be cut with a chemical anchor, a hole-in anchor, or the like, and passes the mounting bolt 26 through the bolt. The nut is fixed on the floor slab member 3 by inserting the nut into the hole 24c and fastening the nut. At this time, when the hole for attaching the mounting bolt 26 is drilled in the floor slab member 3, the mounting hole may be formed through the floor slab member 3. By inserting the mounting bolt 26 and fixing the lower end side of the mounting bolt 26 using a fixing plate and a nut provided on the lower surface side of the floor slab member 3, the floor slab holding / suspending member 23 is fixed to the floor slab member 3. Can be detachably attached.

  Then, the floor slab member 3 is started to be cut by a blade cutter device that cuts a member by cutting a rotating blade such as a wall saw, road cutter, plunge cutter or the like. The suspension member 23 is attached. At this time, as shown in FIG. 11, the floor slab holding / suspending member 23 is installed across the cutting line (cutting groove) 27. Thereby, in a state where the floor slab member 3 is separated by cutting, a plurality of floor slab holding / suspending members 23 appropriately disposed at predetermined positions are arranged on the opposite non-separation side across the cutting line 27. It is locked so as to be caught by the member. For this reason, the floor slab member 3 is supported by the plurality of floor slab holding / suspending members 23 and held in a separated state.

  Therefore, it is not necessary to provide a temporary support frame on the floor slab member 3 on the lower floor as in the prior art, and an inexpensive floor slab holding / suspending member 23 is easily attached to the floor slab member 3. The floor slab member 3 that has been cut and separated can be reliably held.

  Further, the rope 22 such as a wire rope can be easily attached to the crane 2 by laying it in the suspension hole 25a of the floor slab holding / suspending member 23 attached to the floor slab member 3 that has been cut and separated. Thus, the floor slab member 3 can be lifted and easily removed.

  Furthermore, when the floor slab member 3 is suspended from the demolition work site by the crane 2, the floor slab holding / suspending member 23 can be removed from the floor slab member 3 by a simple operation of removing the nut. Therefore, the floor slab member 3 can be cut and separated and conveyed and removed while diverting the floor slab holding / suspending member 23.

  On the other hand, a plurality of floor slab holding / suspending members 23 may be attached to predetermined positions of the floor slab member 3 in advance. In this case, for example, as shown in FIGS. 10 and 11, the floor slab holding / suspending member 23 is configured to be rotatable around the axis O1 of the mounting bolt 26. The floor slab holding / suspending member 23 is rotated to adjust its direction so as to be arranged on the floor slab member 3 to be cut. Then, cutting is started by the blade cutter device, and the floor slab holding / suspending member 23 is sequentially rotated from the position where the cutting is completed, and the direction is changed so as to cross the cutting line 27.

Thus, in the same manner as described above, in the state where the floor slab member 3 is separated by cutting, a plurality of floor slab holding / suspending members 23 appropriately disposed at predetermined locations are opposite to each other across the cutting line 27. The floor slab member 3 that has been cut and separated is held by these floor slab holding / suspending members 23. Therefore, even in the case of such a configuration, similarly to the above, it is unnecessary to provide and support a temporary support frame on the floor slab member 3 on the lower floor as in the prior art, and the floor slab member 3 is cut and separated. can do. Further, the rope 22 such as a wire rope can be easily attached to the crane 2 by laying it in the suspension hole 25a of the floor slab holding / suspending member 23 attached to the floor slab member 3 that has been cut and separated. Thus, the floor slab member 3 can be lifted and easily removed.
In addition, the floor slab holding / suspending member 23 and the non-separation side member are detachably fixed using bolts or the like in a state where the floor slab holding / suspending member 23 is disposed across the cutting line 27. You may make it do. In this case, when the cut and separated floor slab member 3 is transported and removed by the crane 2, the joining state of the floor slab holding / suspending member 23 and the non-separating member is released. Since the floor slab holding / suspending member 23 and the non-separation side member are fixed, the floor slab member 3 cut and separated in a more stable state can be held.

[Disassembly of beam members]
Next, a method for disassembling the beam member (large beam, building component to be cut) 4 will be described.

  Here, conventionally, when dismantling the S-shaped beam member (large beam), the beam member is cut using a gas burner to leave a part, and when the part is left in this way, the crane 2 The suspension is supported, and finally the remaining part is completely cut with a gas burner to separate the beam member, and the crane 2 is used to carry and remove it. Thereby, it is not necessary to support the crane 2 by suspending it constantly, and since the steel frame can be cut in a short time by the gas burner, the waiting time of the crane 2 can be shortened, and the S-structured beam is efficiently made. The member can be dismantled.

  On the other hand, when the RC and SRC beam members 4 are disassembled, the cutting cannot be performed as easily as in the case of the S structure. Even when the crane 2 is suspended and supported at the stage where the portion is left, and the remaining portion is finally cut, the waiting time of the crane 2 becomes long. In addition, the RC and SRC beam members 4 are heavier than the S beam members, so it is necessary to hold them securely during cutting work, and an earthquake will occur during cutting. It is also necessary to consider.

  On the other hand, in the building dismantling method of the present embodiment, the beam member 4 is exposed by cutting the floor slab member 3 and removing it in advance. For this reason, it becomes possible to support and hold the beam member 4 to be cut from above. Thereby, in this embodiment, as shown in FIG.12, FIG.13, FIG.14, the member holding apparatus 30 for cutting and dismantling is used, and the beam member 4 to be cut is held from above at the time of cutting work.

  The member holding device (member holding device for cutting and disassembling) 30 of this embodiment is formed using H-section steel or the like as shown in FIGS. 12 and 13, and extends in the horizontal direction (one horizontal direction) T1. The holding beam portion 31 and the holding beam portion 31 provided are integrally provided, open downward, and insert the upper end portion of the building component such as the column member 6 and the beam member 4 from the small ON opening. The plurality of engaging and holding portions 32 for engaging with each other and holding the holding beam portion 31 in a state of being disposed in the lateral direction T1 are formed.

  In addition, the engagement holding part 32 is formed in a U shape, for example, and a space between a pair of side wall parts 32a forming an opening facing downward is engaged with a building such as the column member 6 or the beam member 4. It is formed with a dimension slightly larger than the thickness dimension of the constituent members.

  Here, as shown in FIG. 12, the member holding device 30 is provided with an engagement holding portion 32 that can be moved forward and backward in the extending direction (lateral direction T <b> 1) of the holding beam portion 31 while being connected to the holding beam portion 31. It may be configured. In this case, the position of the engagement holding part 32 can be freely adjusted, and the engagement holding part 32 can be engaged with the building component at an arbitrary position.

  As shown in FIG. 13, the member holding device 30 may configure the engagement holding portion 32 so that, for example, one side wall portion 32 a can be moved relative to the other side wall portion 32 b. In this case, the width t1 of the engagement holding part 32 to be engaged with the building component can be freely adjusted, and the width of the building component such as the column member 6 and the beam member 4 with different thicknesses can be adjusted. The engagement holding part 32 can be reliably engaged by adjusting t1. That is, the holding beam portion 31 can be stably held in a state where the holding beam portion 31 is arranged in the lateral direction T1.

  Further, a plurality of engagements having different intervals between the pair of side wall portions 32a and 32b, such as the engagement holding portion 32 for the column member, the engagement holding portion 32 for the beam member, and the engagement holding portion 32 for the wall member. The holding portion 32 may be prepared in advance, and may be configured so that it can be reliably engaged with the column member 6, the beam member 4, or the like by appropriately replacing the holding beam portion 31. That is, the engagement holding part 32 may be provided so as to be detachably connected to the holding beam part 31.

  Further, as shown in FIG. 14, the member holding device 30 of the present embodiment has an end portion detachably connected to the holding beam portion 31, wrapped around the beam member 4, and the beam member 4 attached to the holding beam portion 31. On the other hand, a winding holding member 33 such as a chain for holding it integrally is provided. Further, a plurality of the winding holding members 33 are provided at a predetermined position, and the length of the winding holding member 33 can be adjusted. The winding holding member 33 can be configured by applying, for example, a chain block.

  Further, as shown in FIG. 12, the member holding device 30 of the present embodiment is provided with two or more suspension portions 34 provided with suspension holes for supporting the suspension by the crane 2, and these are provided in the retention beam portion 31. An end portion is connected to the hanging portion 34 and a rope 22 such as a wire rope for hooking a hook of the crane 2 is connected. In this case, by connecting the hook of the crane 2 to the suspension part 34 or the rope 22, the member holding device 30 and the beam member 4 cut together with the member holding device 30 can be lifted and transported.

  Furthermore, at this time, in this embodiment, as shown in FIG. 12, the length of the rope 22 is adjusted so that the hook of the crane 2 can be slung on the rope 22 on the ground. Thereby, the hook of the crane 2 can be easily attached to the cable body 22 such as a wire rope, and the beam member 4 can be transported and removed together with the member holding device 30 without performing work at a high place.

  Moreover, as shown in FIG. 14, in the member holding device 30 of this embodiment, when the length of the holding beam portion 31 corresponds to the span length, the floor slab member 3 is disassembled and removed first, and the column member. Since the upper end of 6 and the upper surface of the beam member 4 are exposed, the engagement holding portions 32 on both ends of the holding beam portion 31 are engaged with the respective upper ends of the pair of column members 6. Further, a winding holding member 33 such as a chain is wound around the beam member 4 and held.

  When the beam member 4 to be cut is held by the member holding device 30 as described above, the wire saw 16 shown in FIGS. 2 to 4 is pressed from the side surface side of the beam member 4 or from the lower surface side of the beam member 4. As described above, the operator operates the dismantling work machine 18 by one person, and cuts the beam member 4 by cutting the wire saw 16 into the beam member 4 by a push-off method.

  And in the building dismantling method of this embodiment, as shown in FIG. 14, the separated beam member 4 is hold | maintained with the member holding | maintenance apparatus 30 in the step which cut | disconnected each end side of the beam member 4 by the push-off method, respectively. Can do. Thereby, by using the wire saw device 10 of the push-cut method, the wire saw 16 is wound around the member to be cut like the pull-off method, or the main body portion of the wire saw device 10 is fixed to the member with the anchor. A setup operation becomes unnecessary, and the beam member 4 can be efficiently cut.

  Further, the RC and / or SRC beam member 4 which is the main component of the building 1 can be cut and separated by the push-saw type wire saw device 10 in this way, thereby greatly increasing the amount of noise, vibration and dust scattering. It becomes possible to reduce. As a result, it becomes possible to maintain a suitable environment in the vicinity or work site where work interruption and reduction of work time are not required as in the past, and dismantling work can be carried out efficiently and smoothly. It becomes possible.

  Furthermore, by using the push-saw type wire saw device 10, it becomes possible for one worker to perform the cutting work of the beam member 4, and it becomes possible to further improve the working efficiency and reduce the cost. .

  Moreover, since the long wire saw 16 does not rotate in an open environment at the time of cutting work as in the case of the wire saw apparatus of the pulling method, the stability of the wire saw 16 can be secured, or the cutting work can be surrounded. It is also possible to reduce measures for restricting the entry and exit of others, that is, measures for ensuring work safety.

  And since the length of the cable body 22 such as a wire rope is adjusted, the cable body 22 can be easily attached to the cable body 22 at the stage where the wire saw device 10 is cut and separated by the push-off method without performing the work at a high place. The hook of the crane 2 can be attached, and the beam member 4 can be conveyed and removed together with the member holding device 30.

  Next, as shown in FIGS. 15, 16, and 17, when the length of the holding beam portion 31 is shorter than the span length, the pair of engagement holding portions 32 are respectively connected to the column member 6 and the beam member. 4 or the member 4 is engaged with the beam member 4 and the member holding device 30 is installed, and a part of the beam members 4 on which the member holding device 30 is installed are used with the wire saw device 10 in the same manner as described above. Cut and remove by push-cut method. Further, the engagement holding portion 32 is continuously engaged with the beam member 4 and the column member 6, and the member holding device 30 is installed in the other part of the beam member 4. Cut and remove. That is, if the member holding device 30 is installed at an appropriate place, and the beam member 4 is cut and removed in multiple times, the beam member 4 is cut and removed by the push-and-cut type wire saw device 10 using the member holding device 30. Can do.

  At this time, in the member holding device 30 of the present embodiment, since the engagement holding portion 32 is provided so as to be able to advance and retract in the extending direction T1 of the holding beam portion 31, as shown in FIG. According to the length of the beam member 4, the position can be easily adjusted and engaged. Thereby, the cut beam member 4 can be reliably and stably held by the member holding device 30 and conveyed and removed by the crane 2.

  Moreover, when the engagement holding part 32 is comprised so that relative movement of one side wall part 32a with respect to the other side wall part 32b is possible, it is possible to freely adjust the width t1 to be engaged with the building component. The engagement holding portion 32 can be reliably engaged by adjusting the width t1 even for building components having different thicknesses such as the column member 6, the beam member 4, and the wall member 5 that are engaged. it can.

  Thereby, the holding beam part 31 can be stably held in a state of extending in the horizontal lateral direction T1. Further, an engagement holding portion 32 for the column member, an engagement holding portion 32 for the beam member, an engagement holding portion 32 for the wall member, and the like are prepared in advance, and the column member 6 is appropriately replaced with the holding beam portion 31. In this case, the engagement holding portion 32 is selectively attached to engage the column member 6, the beam member 4, or the wall member 5. Again, the holding beam portion 31 can be stably held in a state of extending in the horizontal lateral direction T1.

  Further, as shown in FIG. 15 (FIG. 13), the member holding device 30 of this embodiment is engaged with the beam member 4 by the engagement holding portion 32 that is engaged with the beam member 4 (or the wall member 5). In this state, a support pillar portion 35 that extends downward and reaches, for example, the floor slab member 3 to be grounded may be provided. In this case, when the beam member 4 to be cut is cut and separated, the beam member 4 can be reliably held in a stable state.

  At this time, the support column portion 35 may be configured to be detachably integrated with the engagement holding portion 32. In this case, the support column portion 35 can be attached at the stage where the load of the beam member 4 to be cut is applied to the member holding device 30 during the cutting operation. Thereby, it is possible to prevent the support column part 35 from interfering with work until the support column part 35 is attached. Furthermore, when the beam member 4 that has been cut and separated is transported and removed by the crane 2 together with the member holding device 30, it is possible to remove the support column portion 35 and prevent it from interfering with the transport work.

  Further, the support column portion 35 may be formed to be extendable / fixable. Further, the support column portion 35 may be formed so as to be split / connectable. In this case, the length can be freely adjusted by expanding / contracting the support column part 35 or adjusting the number to be connected. For this reason, for example, the lower end can be brought into contact with the floor slab member 3 and the load of the beam member 4 to be cut can be supported during the cutting operation.

  Moreover, the support pillar part 35 may be divided into a plurality and formed so as to be connectable. Even in this case, since the length of the support column 35 can be freely adjusted, the lower end can be brought into contact with the floor slab member 3 with certainty, for example, and the beam member to be cut at the time of cutting work. 4 loads can be supported.

  As described above, when the member holding device 30 is used as a means for holding the beam member 4 to be cut, the risk of the beam member 4 falling over during an earthquake can be eliminated. In addition, the transfer is relatively easy, it is not necessary to install an anchor, and it can be formed and configured at low cost by using steel raw material. Thereby, it becomes possible to improve work efficiency and economy. Furthermore, since it is disposed above the beam member 4 to be cut, it does not obstruct the passage of other equipment.

  Here, in the building dismantling method of the present embodiment, the member holding device 30 is not necessarily used when dismantling the beam member 4. For example, as shown in FIGS. 18 to 20, the beam member 4 to be cut is supported with a support member 36 interposed between the beam member 4 and the floor slab member 3. Then, while the beam member 4 is cut by the push-saw type wire saw device 10 while being supported by the support member 36, the beam member 4 may be suspended and supported by the crane 2 and removed.

  As the support member 36, for example, as shown in FIGS. 18 and 19, a member having a columnar or rod-shaped member 36 a and a stay 36 b for supporting a horizontal force can be applied. In addition, as shown in FIG. 20, for example, a flying shore or the like may be used as the support member 36, and further, the panel, joist, large draw, pipe support, etc. are combined, and the floor panel and the frame scaffold are integrated. As a support member 36, a flying shore constructed as a system that can move horizontally and vertically as it is may be used.

  Further, when the support member 36 is interposed and supported between the beam member 4 and the floor slab member 3 in this way, if an earthquake occurs during the cutting operation, the building components are damaged or collapsed by the seismic force. Since there is a possibility, one end side is detachably fixed to the beam member 4 side to be cut and detachably fixed to the non-separation side on the other end side so as to straddle the cutting line 27 from the start of cutting until conveyance removal. 37 is preferably installed. Thereby, the beam member 4 after cutting can also be brought into a connected state by the holding member 37, and the seismic force can be transmitted to bear the entire frame. Further, by removing the holding member 37 at the stage of conveyance by the crane 2, the beam member 4 can be conveyed and removed easily and suitably.

[Disassembly of beam members (wall beams with walls, building components to be cut)]
Next, the case where the beam member 4 and the wall member 5 provided in the outer peripheral part of the building 1 are disassembled as a walled large beam will be described.

  When the beam member 4 and the wall member 5 are cut and separated mainly using a wire saw device in order to suppress noise and dust scattering, the cutting work is performed with the crane 2 suspended and held. The stop time of the crane 2 becomes long and becomes inefficient. In addition, it is necessary to consider countermeasures when an earthquake occurs, and it is necessary to hold the beam member 4 and the wall member 5 even during cutting. For example, it may be possible to perform a cutting operation in a state where a fixing plate such as a steel plate is attached to the beam member 4 and the wall member 5 to be cut using anchor bolts or the like and is completely fixed. It takes time to install and produce the plate, and work efficiency and economy are deteriorated.

  On the other hand, in the building dismantling method of the present embodiment, the beam member 4 and the wall member 5 are disassembled as a wall-mounted large beam using a wire saw device and a member holding device 30.

  First, FIG. 21 is a diagram illustrating a method of disassembling the beam member 4 together with the wall member 5 having the opening 38 such as a continuous window or a pot window.

  As shown in this figure, the engagement holding portion 32 is engaged with each of the pair of column members 6, and the holding beam portion 31 is bridged between the column members 6 to install the member holding device 30. Next, a winding holding member 33 such as a chain is wound around the beam member 4, the falling wall 5 a of the wall member 5, and the upper layer waist wall 5 b connected to the upper portion of the beam member 4 through the opening 38 such as a continuous window. . Accordingly, the beam member 4, the falling wall 5 a of the wall member 5, and the waist wall 5 b are wound around the holding beam portion 31 and connected by the holding member 33.

  Next, a wire saw is disposed so as to be wound around the beam member 4, the falling wall 5 a of the wall member 5, and the waist wall 5 b through the opening 38 from the opening 38 such as a continuous window, and the peripheral end portion of the opening 38. The wire saw is cut by a pulling method from the top to the bottom, and the falling wall 5a of the wall member 5, the beam member 4, and the waist wall 5b of the wall member 5 are continuously cut. Further, the falling wall 5a, the beam member 4, and the waist wall 5b are cut and separated by a drawing method so that both end portions of the beam member 4 are cut. The beam member 4 and the wall member 5 (walled large beam) cut and separated in this way are lifted by the crane 2 together with the member holding device 30, and are transported and removed.

  Then, as described above, the member holding device 30 is installed, and a wire saw is sequentially disposed through the opening 38 formed in the wall member 5 of each layer, and the beam member 4, the falling wall 5 a of the wall member 5, and the waist. The wall member 5 is cut and separated in the state where the wall 5b is integrated, and the beam member 4 and the wall member 5 which have been cut and separated are transported and removed together with the member holding device 30 by the crane 2, whereby the beam member 4 and the wall member 5 of each layer are Can be dismantled.

  Next, FIG. 22 is a diagram illustrating a method of disassembling the beam member 4 together with the wall member 5 (entire wall) that does not include the opening 38.

  As shown in the figure, the member holding device 30 is installed by engaging the engagement holding portions 32 with the pair of column members 6 and spanning the holding beam portions 31 between the column members 6 in the same manner as described above. Further, a first insertion hole 39 is formed through a core drill, a concrete drill, or the like below the beam member 4 and at a predetermined position of the wall member 5 on both side ends, and a chain or the like is formed in the pair of first insertion holes 39. The winding holding member 33 is inserted, and the beam member 4 and the wall member 5 are connected to the member holding device 30.

  At the same time, a core drill or a concrete drill is provided below the first insertion hole 39, immediately below each cutting position on both ends of the beam member 4 and on both side ends at predetermined positions at the intermediate height of the wall member 5, respectively. A pair of second insertion holes 40 are formed by, for example. Further, a pair of first through holes 41 is formed on the lower end side of the wall member 5 below the pair of second insertion holes 40 and on both side ends.

  Then, using a blade cutter device that cuts a member by cutting a rotating blade such as a wall saw, a road cutter, a plunge cutter, etc., a first cut 42 is made at an intermediate height position of the wall member 5 (of the wall member 5). Cutting the middle height position).

  Next, a wire saw is disposed from the first through-hole 41 so as to be wound around the wall member 5 and the beam member 4 through the first through-hole 41, and above the first through-hole 41 on the lower end side of the wall member 5. A wire saw is cut by a pulling method toward, and the wall member 5 and the beam member 4 are continuously cut. Moreover, the wall member 5 and the beam member 4 are cut | disconnected by the drawing method so that the both ends side of the beam member 4 may be cut | disconnected. When the first saw 42 is formed in the wall member 5 by cutting with the wire saw in this manner, the upper side of the beam member 4 and the wall member 5 can be cut and separated. Thereby, the beam member 4 and the upper side of the wall member 5 can be lifted by the crane 2 together with the member holding device 30 as a wall-mounted large beam, and can be conveyed and removed.

  Next, the engagement holding portion 32 is engaged with the pair of column members 6 again, and the member holding device 30 is installed by spanning the holding beam portion 31 between the column members 6. Further, a wall holding member 33 such as a chain is inserted into a pair of second insertion holes 40 penetratingly formed at predetermined positions on both side ends of the wall member 5 remaining below, and the wall remaining below The member 5 and the member holding device 30 are connected.

  Then, using the blade cutter device, a second cut 43 is made in a straight line in the lateral direction so as to connect the pair of first through holes 41 to the lower end side of the wall member 5 (cutting the lower end side position of the wall member 5). ). Thereby, the wall member 5 remaining on the lower end side is cut and separated, and the lower end side of the wall member 5 can be lifted by the crane 2 together with the member holding device 30, and removed.

As described above, the member holding device 30 is installed, and the beam members 4 and the wall members 5 of each layer are sequentially held by the member holding device 30 and cut and separated, and transported and removed by the crane 2 to thereby remove the beams of each layer. The member 4 and the wall member 5 can be disassembled.
In the present embodiment, the first notch 42 is inserted at the intermediate height position of the wall member 5 and the wall member 5 is divided into two parts in the vertical direction. The wall member 5 is divided into three or more parts and transported and removed using the same procedure as in the present embodiment, with a plurality of gaps formed at intervals (cutting the wall member 5 at a plurality of height positions). May be.

  Further, by using the member holding device 30, it is possible to obtain the same operational effects as when the beam member 4 is disassembled. That is, by providing the engagement holding part 32 so as to be able to advance and retreat in the extending direction of the holding beam part 31 (lateral direction T1), the position of the engagement holding part 32 can be freely adjusted, and the engagement holding part 32 can be engaged at any position. The combined holding portion 32 can be engaged with the building component.

  Further, for example, by configuring the engagement holding portion 32 so that the one side wall portion 32a can move relative to the other side wall portion 32b, the width t1 of the engagement holding portion 32 to be engaged with the building component can be freely set. It is possible to adjust, and the engagement holding portion 32 can be reliably engaged by adjusting the width t1 even with respect to building components having different thicknesses such as the column member 6 and the beam member 4. That is, the holding beam portion 31 can be stably held in a state where the holding beam portion 31 is arranged in the lateral direction T1.

  Furthermore, by adjusting the length of the rope 22 so that the hook of the crane 2 can be slung on the rope 22 on the ground, the rope 22 such as a wire rope can be easily attached to the rope 22 without performing work at a high place. The hook of the crane 2 can be attached, and the beam member 4 and the wall member 5 can be conveyed and removed together with the member holding device 30.

  As described above, when the member holding device 30 is used as a means for holding the beam member 4 and the wall member 5 to be cut, the risk of the beam member 4 and the wall member 5 falling over during an earthquake is eliminated. can do. In addition, compared with the conventional case of crushing and dismantling the outer wall of the building, there is no risk of the glass falling to the outside, and a highly reliable dismantling work can be realized. Further, the transfer is relatively easy, and it is not necessary to install an anchor, and it can be formed and configured at a low cost by using steel raw material. Thereby, it becomes possible to improve work efficiency and economy. Furthermore, since it is disposed above the beam member 4 and the wall member 5 to be cut, it does not obstruct the passage of other equipment.

[Dismantling column members (building components to be cut)]
Next, a method of disassembling the column member 6 remaining after disassembling the beam member 4 and the wall member 5 as described above will be described.

  Here, when dismantling the S-structured column member, the gas column burner is used to cut in the column member in a form that leaves a part, and at this stage, the suspension is supported by the crane 2 and the remaining portion is completely completed with the gas burner. However, when the RC or SRC column member 6 is disassembled, it takes time to cut, so it takes a lot of time for cutting to leave a part. Considering the occurrence of earthquakes and the like, the column member 6 is particularly heavy and needs to be held even during cutting.

  On the other hand, in the present embodiment, first, the member holding device 30 used at the time of disassembling the beam member 4 or the wall member 5 is diverted to hold the column member 6 and is cut by the wire saw device 10 to be the column member. The case of dismantling 6 will be described.

  First, as shown in FIG. 23, the member holding device 30 of the present embodiment has an upper end detachably connected to an engagement holding portion 32 to be engaged with the beam member 4 (or the wall member 5), or, for example, After the engagement holding part 32 is removed, the upper end part is detachably connected directly to the holding beam part 31, and the support column part 35 extending downward to reach the floor slab member 3 is connected to both ends of the holding beam part 31. Each is provided with a side.

  In addition, the pair of support column portions 35 includes a leg portion 35b for allowing the member holding device 30 to stand by itself at the lower end of the support column main body portion 35a extending in the vertical direction T2. Further, in the present embodiment, the leg portion 35b is configured to extend in a direction orthogonal to the support column main body portion 35a, and further, one end is connected to the distal end side in the extending direction of the leg portion 35b and the other end is supported. A reinforcing member 35c is obliquely connected to the column main body portion 35a. Thereby, the member holding device 30 of the present embodiment is formed in a gate shape by the holding beam portion 31 and the pair of support column portions 35, and can stably stand on its own by the leg portions 35 b provided on each support column portion 35. Is formed.

  The member holding device 30 configured as described above is installed such that the column member 6 is disposed between the pair of support column portions 35 and the holding beam portion 31 is disposed above the column member 6. A winding holding member 33 such as a chain is wound around the remaining portion of the beam member 4 left uncut on the side surface of the member 6. Thereby, the column member 6 is connected to the member holding device 30 that is stably provided, and the column member 6 can be held in a stable state.

  And at the stage where the column member 6 is held by the member holding device 30 in this way, the operator operates the dismantling work machine 18 by one person so as to press the wire saw 16 against the side surface on the lower end side of the column member 6, The wire saw 16 is cut into the pillar member 6 by a push-cut method, and the pillar member 6 is cut. Thereby, the separated column member 6 is held by the member holding device 30. Then, the hook of the crane 2 is attached to the cable body 22 such as a wire rope attached to the member holding device 30 without performing the work at a high place, and the column member 6 is lifted by the crane 2 together with the member holding device 30 and is transported and removed. be able to.

  Therefore, even when the column member 6 is cut, the separated column member 6 is held at the stage where the lower end side of the column member 6 is cut by the push-saw type wire saw device 10 in the same manner as when the beam member 4 is cut. It can be held by the device 30. Thereby, by using the wire saw device 10 of the push-cut method, the wire saw 16 is wound around the member to be cut like the pull-off method, or the main body portion of the wire saw device 10 is fixed to the member with the anchor. A setup work becomes unnecessary and it becomes possible to cut the column member 6 efficiently.

  In addition, the push-cut type wire saw device 10 can cut and separate the RC and / or SRC column members 6 which are the main components of the building 1, thereby greatly increasing the amount of noise, vibration and dust scattering. It becomes possible to reduce. As a result, it becomes possible to maintain a suitable environment in the vicinity or work site where work interruption and reduction of work time are not required as in the past, and dismantling work can be carried out efficiently and smoothly. It becomes possible.

  Furthermore, by using the push-saw type wire saw device 10, it becomes possible for one worker to perform the cutting work of the column member 6, and it becomes possible to further improve the work efficiency and reduce the cost. .

  Moreover, since the long wire saw 16 does not rotate in an open environment at the time of cutting work as in the case of the wire saw apparatus of the pulling method, the stability of the wire saw 16 can be secured, or the cutting work can be surrounded. It is also possible to reduce measures for restricting the entry and exit of others, that is, measures for ensuring work safety.

  In addition, since the length of the cable body 22 such as a wire rope is adjusted, the cable body 22 can be easily connected to the cable body 22 at the stage where the wire saw device 10 is cut and separated using the wire saw device 10 without performing work at a high place. The hook of the crane 2 can be attached, and the column member 6 can be conveyed and removed together with the member holding device 30.

  As described above, when the member holding device 30 is used as a means for holding the column member 6 to be cut, it is possible to eliminate the risk of the column member 6 falling and falling during an earthquake. Further, compared to a fixing method using a chemical anchor on the side surface of the column member 6, there is no problem such as the trouble of anchor processing and interference with the anchor due to reinforcement, and the column member 6 can be easily and reliably held. In addition, the column member 6 can be conveyed and removed by a simple operation such as staking. Thereby, it becomes possible to improve work efficiency and economy.

  The method of cutting and disassembling the column member 6 with the push-off type wire saw device 10 while holding the pair of support column portions 35 with the member holding device 30 attached to the holding beam portion 31 is as follows. Of course, since the arranged column member 6 can suppress the generation of noise and vibration and the scattering of dust, it is particularly suitable when used for dismantling the column member 6 arranged on the outer periphery of the building.

  Here, the column member 6 may be cut and disassembled using the member holding device 30 having the holding beam portion 31 as a main component without attaching the support column portion 35. That is, for example, as shown in FIG. 24, a unit platform 45 such as a frame scaffold is installed on both sides across the column member 6, and the holding beam portion 31 is bridged by supporting both ends of the pair of unit platforms 45, The member holding device 30 may be installed. Also in this case, the column member 6 is connected to the holding beam portion 31 of the member holding device 30 by winding the winding holding member 33 such as a chain around the remaining portion of the beam member 4 left uncut on the side surface of the column member 6. , Can be held in a stable state.

  For this reason, when the column member 6 is held by the holding beam portion 31 of the member holding device 30 in this way, the worker alone disassembles the work machine so as to press the wire saw 16 against the side surface on the lower end side of the column member 6. The column member 6 can be cut by operating 18 and cutting the wire saw 16 into the column member 6 by a push-off method. Thereby, the separated column member 6 can also be held by the member holding device 30, and the column member 6 can be lifted by the crane 2 together with the member holding device 30, and can be conveyed and removed.

  The method of cutting and disassembling the column member 6 with the push-off type wire saw device 10 while being held by the holding beam portion 31 of the member holding device 30 installed on the pair of unit mounts 45 is arranged inside the building 1. It is particularly preferable to use it at the time of disassembling the provided column member 6.

  On the other hand, the column member 6 may be held by another member holding device by using the member holding device 30 described above when cutting other building components such as the beam member 4.

  For example, as shown in FIGS. 25 and 26, a holding ring member 46 attached to the outer surface (side surface) of the column member 6 so as to surround the column member 6, one end connected to the holding ring member 46, and the other end And a plurality of support support members 47 arranged in connection with anchors or the like placed on the floor slab member 3 may constitute the member holding device 44. In addition, as shown in FIG. 25, a plurality of support support members 47 may be disposed at a plurality of locations at relative angular positions where the column member 6 can be supported, and a plurality of support support members 47 may be provided at each location. . In this case, the plurality of support support members 47 can reliably cover the necessary support force at each location, and the column member 6 can be held in a stable state relatively easily.

  In addition, as shown in FIG. 26, for example, when the column member 6 is formed in a cross-sectional square shape, the holding ring member 46 includes four rod-like holding member pieces 46a arranged along four side surfaces. It is configured to be detachable. Further, each holding member piece 46a is connected via a fastener 46b for freely adjusting the connection position with the adjacent holding member piece 46a, and by operating these fasteners 46b, a holding ring member The inner area of 46 can be adjusted in size. As a result, even with respect to the column member 6 having a different cross-sectional area (size), each holding member piece 46a is surely pressed against the outer surface of the column member 6, and the column member 6 is tightened so that the holding ring member 46 is It can be fixedly attached to the member 6.

  The retaining ring member 46 is provided with a mounting bracket 46 c for connecting one end of the support support member 47.

  In the case where the column member 6 is formed in a circular cross section, for example, a substantially circular shape in which one end of an elastically deformable belt-like member is detachably connected to the inner surface side via a fastener 46b. An annular retaining ring member 46 may be used. The retaining ring member 46 is wound so as to surround the column member 6 having a circular cross section, and the fastener 46b is operated so as to reduce the inner area, whereby the inner surface of the band-shaped member is the outer surface of the column member 6 ( The column member 6 can be attached so as to abut against the outer peripheral surface).

  Then, the holding ring member 46 as described above is attached to a predetermined position of the column member 6, a plurality of support support members 47 are connected to the attachment bracket 46c, and the lengths of these support support members 47 are adjusted and tensioned. The column member 6 can be held in a stable state.

  This eliminates the risk of the column member 6 falling down by a simple operation of attaching the holding ring member 46 that can be easily attached, detached and transported by the worker to the column member 6 and tensioning the support support member 47. be able to. In addition, since a large space is not required, even if it is installed, there is no obstacle to traffic of other equipment. Furthermore, inexpensive hardware can be used, and general-purpose lease temporary materials can also be used, which can be manufactured at low cost. Furthermore, since it is not necessary to use an anchor for fixing to the column member 6, labor and cost can be saved. Moreover, it can be diverted and can be handled with the minimum number of preparations.

  Then, by holding the column member 6 with such a member holding device 44, the operator operates the dismantling work machine 18 by himself and presses it against the side surface on the lower end side of the column member 6 in a push-cut manner. 16 can be cut into the pillar member 6 and the pillar member 6 can be cut. Further, the separated column member 6 can be reliably held by the member holding device 44.

  In addition, the holding member 33 such as a chain or a wire rope is wound around the remaining portion of the beam member 4 that is left uncut on the side surface of the column member 6 and connected to the hook of the crane 2. 6, removing one end of each of the plurality of support support members 47 from the holding ring member 46, or removing the other end of the plurality of support support members 47 from the anchor of the floor slab member 3. 6 is suspended and supported. Thereby, the column member 6 can be lifted by the crane 2 and can be removed.

  On the other hand, when the column member 6 is cut and separated by the push-saw type wire saw device 10 as described above, the column member 6 tilts due to the weight of the column member 6 with the progress of cutting, and the wire saw 16 is sandwiched. Is also possible. Moreover, it is conceivable that a means for further stabilizing the column member 6 against an earthquake that occurred during cutting is required.

  On the other hand, in the building dismantling method of this embodiment, when cutting the column member 6, the wedge member 48 is formed in the cutting groove 27 formed on the outer surface (side surface) of the column member 6 with the progress of the wire saw 16. To secure the width of the cutting groove 27.

  More specifically, as shown to Fig.27 (a), the wire saw 16 is cut from the near side of the pillar member 6, and the pillar member 6 is cut by a push-off method. In addition, as shown in FIGS. 27B and 27C, the wedge member 48 is sequentially driven into the cutting groove 27 formed as the cutting progresses. Then, as shown in FIG. 27D, when the wire saw 16 penetrates the back side of the column member 6 and the column member 6 is cut, the wedge member 48 is driven into the cut groove 27 on the back side. Thereby, the falling of the wire saw 16 due to the dead weight of the pillar member 6 according to the interval between the cutting grooves 27 (cut surfaces) and the wire saw 16 being sandwiched can be eliminated during the cutting operation. .

  Next, in the building dismantling method of the present embodiment, as shown in FIGS. 27 (a) to 27 (d) and 28 to 28, the wedge member 48 is sequentially driven and the column member as the cutting progresses. The anchor bolts 49 such as chemical anchors are respectively provided in the vertical direction T2 on the column member 6 side separated across the cutting groove (cutting line) 27 formed on the outer surface of 6 and the remaining column member 6 side. In addition, a plurality of hammers are driven at predetermined intervals in the vertical direction T2. During the cutting operation, the fixing plate 51 having the bolt insertion holes 50 corresponding to the intervals between the plurality of anchor bolts 49 is set so that the anchor bolts 49 are inserted into the bolt insertion holes 50 and straddle the cutting grooves 27. Fasten with nuts. Thereby, since it is fixed by the fixing plate 51, even if an earthquake occurs, it is possible to prevent the column member 6 being cut or the column member 6 before being separated by cutting and being transported and removed by the crane 2 from falling down. . As the fixed plate, for example, a steel plate having a thickness of about 9 mm can be used.

  In addition, when the column member 6 being cut is independent by itself, that is, when there is a high possibility of falling during an earthquake, the column member 6 side to be separated and the remaining column member 6 side respectively A plurality of anchor bolts 49 such as chemical anchors are driven along the vertical direction T2 and at predetermined intervals in the vertical direction T2. In the middle of cutting, a cutting groove 27 is formed on the outer surface of the column member 6 as the cutting progresses, and the fixing plate 51 is attached with the cutting groove 27 interposed therebetween. At this time, since the cutting wire saw 16 is stopped in the middle of cutting, the fixing plate 51 is inserted between the wire saw device 10 and the outer surface of the column member 6, the anchor bolt 49 is inserted into the bolt insertion hole 50, and the nut It is necessary to conclude.

  However, since there is not a sufficient gap between the wire saw device 10 and the outer surface of the column member 6, the bolt insertion hole 50 is fixed in the fixing plate 51 through which the circular bolt insertion hole 50 is formed as shown in FIG. Therefore, the anchor bolt 49 cannot be inserted through and cannot be installed.

  On the other hand, as shown in FIGS. 32 and 33, the fixing plate 52 in this case is formed with a plurality of bolt insertion holes 50 each having a long hole shape opened at one end of the fixing plate 52. . Accordingly, the fixing plate 52 is inserted into a small gap between the wire saw device 10 and the outer surface of the column member 6, and the fixing plate 52 is slid in one direction in the horizontal direction, whereby the anchor bolts are inserted into the respective bolt insertion holes 50. 49 can be inserted, and the fixing plate 52 can be installed by fastening a nut.

  Therefore, in this case as well, by being fixed by the fixing plate 52, it is possible to prevent the column member 6 from falling even if an earthquake occurs during the cutting operation. Of course, since the pillar member 6 that has been cut and separated and is transported and removed by the crane 2 is also fixed by the fixing plate 52, it can be prevented from falling down.

  Further, as shown in FIG. 33, it is preferable to install a reinforcing plate 54 having a bolt insertion hole 53 together with a fixing plate 52. The reinforcing plate 54 is installed by inserting an anchor bolt 49 through the bolt insertion hole 53, overlapping the fixing plate 52, and fastening a nut. Thereby, even if the bolt insertion hole 50 is formed in a long hole shape, it becomes possible to firmly fix the separated column member 6 side and the remaining column member 6 side by providing the reinforcing plate 54. It is possible to prevent the column member 6 from falling down more reliably.

  The fixing plates 51 and 52 are not only installed on the column member 6 but also may be used to stably hold the beam member 4 when the beam member 4 is cut.

  Therefore, in the member holding device 30 for cutting and disassembling according to the present embodiment, at least two engagement holding portions 32 are engaged with building components such as RC and / or SRC column members 6 and beam members 4. Thereby, the holding beam part 31 can be arrange | positioned in the horizontal direction T1 above a building structural member. Then, the wrapping holding member 33 provided in the holding beam unit 31 is wound around the lower building target member to be cut, so that the building target member to be cut is held by the holding beam unit 31 via the wrapping holding member 33. Can be held.

  Accordingly, it is possible to cut the building component using the wire saw device 10 by the push-off method, and it is possible to securely hold the building component separated by the member holding device 30. Moreover, a rope, such as a wire rope of the crane 2, can be connected to the hanging portion 34, and the building component members cut and separated can be transported and removed together with the member holding device 30.

  Further, when the engagement holding part 32 is connected to the holding beam part 31 so as to be able to advance and retreat, the engagement holding part 32 can be installed at an arbitrary position. Thereby, the position of the engagement holding part 32 is appropriately adjusted according to the distance between the pair of column members (building component members) 6, the length of the beam member (building component member) 4 to be cut, the width of the column members 6, and the like. Thus, the engagement holding part 32 is reliably engaged with the building component, and the holding beam part 31 is disposed above the building component to be cut and extended in the lateral direction T1. It becomes possible to hold.

  Further, since the engagement holding portions 32 are detachably connected to the holding beam portions 31, the number of the engagement holding portions 32 provided in the holding beam portions 31 and the building components to be engaged are further provided. It is possible to freely select and attach the engagement holding portion 32 according to the above. In other words, the column member engagement holding portion 32 to be engaged with the column member 6, the beam member engagement holding portion 32 to be engaged with the beam member 4, and the wall member engagement holding to be engaged with the wall member 5. It is possible to select and use the engagement holding part 32 such as the part 32 that is appropriately matched to the engagement target. Moreover, the selection which does not use the engagement holding | maintenance part 32 can also be performed. Therefore, the versatility of the member holding device 30 for cutting and dismantling can be greatly improved.

  In addition, when the cable body is connected to the suspension portion 32 and the member holding device 30 for cutting and dismantling is suspended and installed on the building component to be cut, the building component is suspended in the opening while being suspended. The engagement holding portion 30 can be engaged with the building component by a simple operation of inserting the upper end portion of the door, and the engagement holding portion 32 can be engaged with the building component more reliably and easily. It is possible to hold the holding beam portion 31 in a state where the holding beam portion 31 is disposed above the building component to be cut and extended in the lateral direction T1.

  Further, for example, when the beam member (building component) 4 is cut and disassembled, one engagement holding portion 32 is changed to the column member (building component) 6 according to the length (span length) of the beam member 4 and the other. It may be necessary to install the member holding device 30 for cutting and disassembling by engaging the engagement holding portion 32 with the beam member 4. In such a case, by connecting the support column portion 35 to the engagement holding portion 32 that engages the beam member 4 or the beam member 4 side of the holding beam portion 31, together with the holding beam portion 31 and the engagement holding portion 32. It becomes possible to support the member holding device 30 for cutting and dismantling, and eventually the building component member that has been cut and separated, in a stable state by the support column portion 35.

  In addition, when the support column portion 35 is detachably connected, the holding beam portion 31 and the engagement holding portion 32 and the member holding device 30 for cutting and disassembling as well as the building components separated by cutting are appropriately supported. The support post 35 can be used only when it is necessary to do so. For example, if the holding beam portion 31 and the engagement holding portion 32 are installed in a predetermined manner, but there is time until the cutting operation is started, the building component is not cut (cut), so the support pillar It is possible to remove the part 35 and attach the support column part 35 to support the cutting and dismantling member holding device 30 and the cut and separated building component member during the cutting operation. Thereby, until the cutting operation is started, the support column portion 35 does not interfere with the passage of workers and equipment.

  In addition, the support pillar portion 35 is removed when connecting and detaching the building component member that has been cut and separated together with the member holding device 30 by connecting the suspension portion 34 with a rope such as a wire rope of the crane 2. Thus, it is possible to easily carry the transfer work.

  Further, the length of the support column portion 35 can be freely adjusted by adjusting the number of expansion and contraction or connection, so that the support column can be adjusted according to the installation height of the holding beam portion 31 and the engagement holding portion 32. The length of the part 35 is adjusted, and it becomes possible to reliably support the member holding device 30 for cutting and dismantling with the support column part 35, and thus the building component member cut and separated in a stable state.

  Further, since there are at least two support pillars 35 each having a leg 35b at the lower end, the member holding device 30 for cutting and disassembling can be made self-supporting. Thereby, by installing the member holding device 30 for cutting and dismantling so that the building structural member to be cut is disposed between the adjacent support pillars 35, the building holding member to be cut is removed by the member holding device 30. It becomes possible to hold in a more stable state.

  Then, in the cutting and demolition member holding device 30 and the building demolition method using the cutting and demolition member holding device 30 of the present embodiment, the cutting and demolition member holding device 30 holds the building component to be cut in a stable state. Therefore, the push-cut type wire saw device 10 can cut and separate building constituent members such as RC and / or SRC pillar members 6 and beam members 4 which are main constituent members of the building 1. This makes it possible to greatly reduce the amount of noise, vibration, and dust scattering, and a suitable environment in the neighborhood or work site where work interruptions and shortening of work time are not required as in the past. Can be maintained, and the dismantling work can be carried out efficiently and smoothly.

  In addition, the push-cut type wire saw device 10 can cut and separate building components such as the column member 6 and the beam member 4 in this way, so that a wire saw can be attached to the building component to be cut at the time of cutting work as compared with the pull-off method. No set-up work such as winding 16 or fixing the main body of the wire saw device 10 to the member with an anchor is required, and the member can be cut efficiently.

For example, when the building dismantling method of this embodiment is adopted, the construction period can be reduced by 30% or more, the amount of generated dust can be reduced by 20% or more, and the noise can be reduced by 20% or more (reduced from 85 db to 65 db). It has been confirmed that vibrations can be substantially eliminated and the amount of CO ₂ generated can be reduced by 30% or more.

  In addition, by using the push-saw type wire saw device 10, it becomes possible for one operator to perform the cutting operation of the member, and it becomes possible to further improve the work efficiency and reduce the cost.

  Furthermore, unlike the wire saw device of the pulling method, since the long wire saw does not rotate in an open environment at the time of cutting work, the stability of the wire saw 16 can be secured, It is also possible to reduce measures for restricting access to others, that is, measures for ensuring work safety.

  Therefore, according to the member holding device 30 for cutting and dismantling of the present embodiment and the building dismantling method using the same, the RC building and / or the SRC building 1 can reliably generate noise and vibration, and dust can be scattered. It is possible to efficiently dismantle while suppressing the above-mentioned, and in particular, it can be suitably used for dismantling work in hospitals, schools, and urban areas.

  As mentioned above, although one Embodiment of the building demolition method concerning this invention was described, this invention is not limited to said one Embodiment, In the range which does not deviate from the meaning, it can change suitably.

1 Building 2 Tower crane (lifter)
3 Floor slab members (building components)
4 Beam members (building components)
5 Wall members (building components)
5a Falling wall 5b Waist wall 6 Column member (building component)
DESCRIPTION OF SYMBOLS 10 Wire saw apparatus 11 Adapter 12 with a tilt mechanism Guide rail 13 Grip mechanism 14 Pulley 15 Pulley (drive pulley)
16 Wire saw 17 Cutting mechanism 18 Demolition work machine 18a Upper turning body 18b Beam 18c Arm 18d Lower traveling body 20 Upper floor (one level)
21 Lower floor (other levels)
22 Cable body 23 Floor slab holding / suspending member 24 Channel steel 24a Side wall 24b Bottom plate 24c Bolt insertion hole 25 Suspension plate 25a Suspension hole 26 Mounting bolt (anchor bolt)
27 Cutting line (cutting groove)
30 member holding device 31 holding beam portion 32 engagement holding portion 32a side wall portion 32b side wall portion 33 winding holding member 34 suspension portion 35 support column portion 35a support column main body portion 35b leg portion 35c reinforcing member 36 support member 36a columnar or rod-shaped Member 36b stay 37 holding member 38 opening 39 first insertion hole 40 second insertion hole 41 first through hole 42 first notch 43 second notch 44 member holding device 45 unit mount 46 holding ring member 46a pressure holding piece 46b fastening Tool 46c Mounting bracket 47 Support support member 48 Wedge member 49 Anchor bolt 50 Bolt insertion hole 51 Fixing plate 52 Fixing plate 53 Long hole 54 Reinforcing plate T1 Horizontal direction T2 Vertical direction

Claims (9)

A member holding device for cutting and dismantling for holding the building component when cutting the RC and / or SRC building component,
A holding beam portion extending in a lateral direction;
Connected to the holding beam portion, engaged with the building component, and held in a state where the holding beam portion is disposed above the building component to be cut and extended in the lateral direction. At least two engagement holders to
A wrapping holding member that is detachably connected to the holding beam portion, and is wound around the building component to be cut to hold the building component to be cut;
A member holding device for cutting and disassembling, characterized in that the member holding device is provided in connection with the holding beam portion and includes a hanging portion for connecting and hanging the rope. The member holding device for cutting and disassembling according to claim 1,
A member holding device for cutting and disassembling, wherein the engagement holding portion is provided so as to be able to advance and retreat in the extending direction of the holding beam portion. In the member holding device for cutting and disassembling according to claim 1 or 2,
A member holding device for cutting and disassembling, characterized in that the engagement holding part is detachably connected to the holding beam part. In the member holding device for cutting and dismantling according to any one of claims 1 to 3,
The engagement holding portion includes an opening portion that opens downward, and is configured to insert an upper end portion of the building component member into the opening portion to engage with the building component member. A member holding device for cutting and dismantling. In the member holding device for cutting and dismantling according to any one of claims 1 to 4,
A member holding unit for cutting and disassembling, comprising: a supporting column part that is connected to the holding beam part and / or the engagement holding part, extends downward, and is grounded to support the holding beam part. apparatus. The member holding device for cutting and disassembling according to claim 5,
A member holding device for cutting and disassembling, characterized in that the support column part is detachably connected to the holding beam part and / or the engagement holding part. The member holding device for cutting and disassembling according to claim 5 or 6,
A member holding device for cutting and disassembling, characterized in that the support column part is formed to be extendable and contractible in the vertical direction or to be split / connectable. In the member holding device for cutting and dismantling according to any one of claims 5 to 7,
Legs extending in the lateral direction connected to the lower ends of the support pillars are provided,
A member holding device for cutting and disassembling, characterized in that at least two of the support pillars are connected to the holding beam part and / or the engagement holding part at intervals. A method of dismantling a building built with RC and / or SRC building components,
A wire saw device is used to hold the building component to be cut using the member holding device for cutting and dismantling according to any one of claims 1 to 8, and the wire saw is used as the building component. A building dismantling method characterized in that it is cut and separated by a push-cut method that cuts from the front to the back side.