JP2022088171A - Scattering prevention device and scattering prevention method - Google Patents

Abstract

To provide a scattering prevention device and a scattering prevention method which block an object to be scattered from a highest floor of a building during demolition with comparatively simple constitutions at low cost.SOLUTION: A scattering prevention device includes a protection material 2 capable of covering the upper side of a building 1, a protection material support body 3 that has a length over a plurality of stories of the building 1, has an upper end coupled to an edge part of the protection material 2 and can vertically penetrate an opening 10 formed on a floor of the building 1, a guide member 5 for guiding the protection material support body 3 in the opening 10 so as to be movable in a vertical direction, a driving device for vertically moving the protection material support body 3, and a load receiving member 6 that is arranged at a position of the opening 10 and supports a lower end of the protection material support body 3, in which the load receiving member 10 can be arranged at a position of the opening 10 and removed in a state where the driving device moves the protection material support body 3 upward.SELECTED DRAWING: Figure 3

Description

The present invention mainly relates to a shatterproof device and a shatterproof method for a building at the time of dismantling.

At the time of demolition of a building, demolition materials such as debris and metal pieces and dust generated by the demolition are scattered. When these scattered objects fall to the outside of the building, they cause human and physical damage to the surroundings of the building. For example, when dismantling with heavy equipment, if rubble, metal pieces, etc. are blown off by the heavy equipment, the rubble, metal pieces, etc. have the same power as ammunition, so measures to prevent the scattering of objects are essential. become.

As a method of dismantling a building consisting of multiple floors, there is a method of sequentially dismantling from the top floor. When such a dismantling method is carried out, the upper part of the uppermost floor during dismantling is covered with a net or the like, and the circumference of the uppermost floor is also surrounded by a net or a protective wall. Hereinafter, in the present specification, the net and the protective wall are collectively referred to as "protective material".

When the dismantling of the uppermost floor is completed, the protective material is lowered to a height position corresponding to the uppermost floor in the next dismantling step, and the next layer is dismantled. In this way, there is a method of dismantling the building while repeating the process of completing the dismantling of the top floor ⇒ descending the protective material ⇒ dismantling the next floor ⇒ descending the protective material.

The dismantling method described in Patent Document 1 is one of them, and includes a temporary enclosure that moves up and down along a multi-layer building and covers the outer periphery of a predetermined floor portion of the multi-layer building. Around the multi-story building, there are multiple fixed building frames with a height from the lowest floor to the top floor, an elevating guide supported by the fixed building frame, and a movable panel that moves up and down guided by the elevating guide. It is equipped with a support, an external panel, and a driving means thereof. The outer panel constitutes the temporary enclosure that covers the outer periphery of a predetermined floor portion of the building being demolished.

In the dismantling method described in Patent Document 1, a plurality of fixed building frames having a height from the lowest floor to the top floor are fixedly installed around a multi-story building until the dismantling of the building is completed. It is something to do. The fixed building frame supports the elevating guide, the elevating guide guides the movable panel support vertically and vertically, and the external panel is fixed to the outer surface of the movable panel support to provide a driving means for driving the movable panel support. I have.

The invention described in Cited Document 1 attempts to protect an object that scatters laterally from the layer being dismantled by an external panel, and does not describe a means for preventing the object from jumping over the external panel and scattering. The invention described in Cited Document 1 requires a relatively large number of components such as a fixed building frame, an elevating guide, a movable panel support, an external panel, and a driving means.

Japanese Patent No. 6635377

It is an object of the present invention to provide a low-cost anti-scattering device and anti-scattering method with a relatively simple configuration for blocking an object that is about to scatter from the top floor of a building being demolished.

The shatterproof device according to the present invention is
It is a shatterproof device for objects that accompany the dismantling of buildings from the top floor.
A protective material that can cover the sky above the building,
A protective material support that has a length that spans a plurality of layers of the building and is capable of vertically penetrating an opening formed in the floor of the building by connecting the edge portion of the protective material to the upper end portion. When,
A guide member that guides the protective material support in the opening so as to be movable in the vertical direction, and
A drive device that moves the protective material support in the vertical direction,
It has a load receiving member that is arranged at the position of the opening and supports the lower end of the protective material support.
The most important feature of the load receiving member is that the drive device can be arranged and removed at the position of the opening while the protective material support is being moved upward.

The shatterproof method according to the present invention is
It is a method to prevent the scattering of objects that accompanies the dismantling of a building from the top floor.
A protective material support having a protective material bonded to the upper end thereof, which can cover the sky of the building, is passed through an opening formed in the floor of the building.
The protective material support is guided in the opening so as to be movable in the vertical direction.
A load-bearing member that supports the lower end of the protective material support is placed at the position of the opening and can be removed.
The upper floor of the building is dismantled in a manner in which the load receiving member is arranged at the position of the opening, the load receiving member is removed from the position of the opening, and the load receiving member is arranged at the position of the opening on the lower floor to protect the building. It is characterized in that the material support is lowered and the protective material is lowered as the dismantling of the building progresses.

According to the present invention, while supporting the load of the protective material support, the protective material support can be lowered together with the protective material each time the building is sequentially dismantled from the top floor. It requires less equipment, has a simple configuration, and can provide anti-scattering devices and anti-scattering methods at low cost.

It is a perspective view which shows typically the Example of the shatter prevention device and the shatter prevention method which concerns on this invention. It is a perspective view which shows the said embodiment together before and after the process. It is a front view which shows the movement of the protective material support in the said Example with the movement of a winch in the order of a process. It is a front view which shows the movement of the protective material support in the said Example in the order of a process. It is a front view which shows the installation of the protective material support in the said Example in the order of a process. It is a perspective view which shows the installation structure of the protective material support and the winch in the said Example. In the installation structure of the protective material support and the winch in the above embodiment, (a) is a partial cross-sectional front view showing the relationship between the opening of the building and the protective material support, and (b) is the protective material support. It is a front view which shows the relationship of a winch. It is an enlarged perspective view which shows the support | support which constitutes the protective material support in the said Example, and the guide structure thereof. The protective material support and the guide member thereof in the above embodiment, (a) is a front view and (b) is a plan view. It is a perspective view which shows the joint part of the steel tower which constitutes the protective material support in said, and a support | column. It is a top view of the joint part of the steel tower and a support. The columns and guide members thereof, (a) and (b), are perspective views viewed from different positions. It is a lifting structure part of the protective material support in the said embodiment, (a) is a front view, (b) is a sectional view of a building. It is a perspective view which shows the guide and clamp mechanism in the said Example. The guide and clamp mechanism, (a) is a plan view, and (b) is a front sectional view. It is a connecting structure of columns constituting a steel tower in the above embodiment, and (a) and (b) are perspective views seen from different positions. The steel tower in the above embodiment, (a) is a plan view, (b) is a front view, and (c) is a side view. It is a perspective view which shows a part of the stretch structure of the protective material by the steel tower in the said Example. (A) is a plan view, (b) is a front view, and (c) is a side view of the tension structure of the protective material. It is a top view which shows the stretch | tension mode of the wire for installing the protective material by the said Example. It is a top view which shows the installation mode of the protective material by the said Example. It is a front view which shows the tension | tension mode of the wire. It is a front view which shows the example of the support structure of the wire by the protective material support in the said Example. It is a front view which shows the state of the descent of the protective material support in the order of (a) and (b). It is a front view which shows the lifting structure part of the said protective material support.

Hereinafter, examples of the shatterproof device and the shatterproof method according to the present invention will be described with reference to the drawings.

[Outline of Examples]
The anti-scattering device and the anti-scattering method according to the present invention are the anti-scattering device and the anti-scattering method applied to the method of sequentially dismantling a building from the top floor to the lower floors. 1 and 2 show an outline of an embodiment of a shatterproof device and a shatterproof method according to the present invention.

In FIGS. 1 and 2, reference numeral 1 indicates a building to be demolished. A scaffolding 8 is built in the building 1 so as to surround the outer surface of the outer wall thereof. As is well known, the scaffolding 8 is assembled by connecting a large number of scaffolding units including a building frame, scaffolding boards, connecting pins, braces, etc. to each other in the horizontal direction and the vertical direction according to the size of the building. In this embodiment, the scaffolding 8 is set so as to be higher than the top floor of the building 1.

As shown in FIG. 20, a number of protective material supports 3 are appropriately arranged inside the outer wall 101 of the building 1, and a wire 4 for installing the protective material between the pair of protective material supports 3 is provided. It is stretched. In the illustrated example, an even number of protective material supports 3 are erected along the opposite edges of the plan-shaped quadrangular building 1.

Two adjacent protective material supports 3 on opposite sides are paired, and a wire 4 is stretched between the protective material supports 3 diagonally opposite to each other. Therefore, two wires 4 intersect at the center between the pair of protective material supports 3, and another protective material support 3 supports the wire 4 at this intersection.

In the example shown in FIG. 20, five pairs of wires 4 are stretched with two wires 4 as a pair. The protective material 2 shown in FIG. 21 is installed on each of the five pairs of wires 4. The bonding structure between the wire 4 and the protective material 2 will be described later. Each protective material 2 covers the sky above the top floor of the building 1. As shown in FIG. 1, heavy machinery is introduced on the top floor whose sky is covered with the protective material 2 to dismantle the floor 100 on the top floor, and further dismantle the outer wall 101 on the top floor.

As shown in FIGS. 1, 2, 2, 3 and the like, the protective material support 3 has a length that spans a plurality of layers of the building 1, and has an opening 10 formed in the floor 100 of the building 1. It is installed through the top and bottom. In the embodiment shown in FIGS. 2 and 3, the protective material support 3 is set to have a length that penetrates the floor 100 for five levels. In the example shown in FIGS. 2 and 3, the protective material support 3 penetrates through the openings 10 of the floors 30F, 29F, and 28F on the 30th, 29th, and 28th floors from the rooftop floor RF. The load of the protective material support 3 is supported by the load receiving member 6 that closes the opening 10 opened in the floor 27F on the 27th floor.

[Structure of protective material support]
As shown in FIGS. 3 to 5, the protective material support 3 includes a support column 32 and a steel tower 31 coupled on the support column 32. The protective material support 3 can move up and down as needed, and has a guide rail 7 that guides the vertical movement of the protective material support 3.

As shown in FIGS. 6 to 13, the pillar 32 has four pillars 321 rising from each corner of the square end plate 323. Each pillar 321 has a structure in which 6 units of pillars 321 are added, for example, with a length of 2 m as one unit. More specifically, the end plates 323 are fixed to the upper and lower ends of the four columns 321 constituting one unit, and the columns 32 are formed by joining and fastening the end plates 323 to each other.

In the four columns 321 constituting the columns 32, adjacent columns 321 are connected to each other by a connecting plate 322 at regular intervals in order to reinforce or substantially integrate them. The connecting plate 322 connects the pillars 321 to each other in a vertical posture. The four connecting plates 322 are arranged in a square shape when viewed from the plane direction, and the pillar 321 is located at the corner of the square.

As shown in FIGS. 10, 11, 14 to 19, the tower 31 is connected to the upper end of the support column 32. The tower 31 has eight columns 311. The eight pillars 311 are divided into two groups of four each, and the pillars 311 belonging to each group further form a pair, and the pair of pillars 311 are connected to each other by a connecting plate 312. The connecting plate 312 forms a vertical surface, and the connecting plate 312 of a pair of pillars 311 forming a group and the other pair of pillars 311 and the vertical pieces at both ends of the U-shaped connecting metal fitting 313 are bolts and nuts. It is fastened and the two pairs of pillars 311 are integrated.

As shown in FIG. 10 and the like, in the two groups of pillars each consisting of four pillars 311 each pair of two pillars 311 is connected to the upper end of the pillar 32. More specifically, the connecting metal fitting 324 is superposed on the end plate 323 at the upper end of the four pillars 321 on the uppermost stage and fastened to the end plate 323, and the pair is attached to the corner portion of the connecting metal fitting 324. There are two pillars of eggplant, 311. Both side edges of the connecting metal fitting 324 are rising portions 325 forming a vertical surface, and the rising portion 325 and the rising portion 325 are fastened with bolts and nuts.

In this way, in the two groups of pillars each consisting of four pillars 311 the two pillars 311 are located on the end plate 323 and the connecting bracket 324, and the other two pillars 311 are viewed from the plane direction. It is located on the outside of the end plate 323 and the connecting metal fitting 324.

The pillar 311 constituting the steel tower 31 has a structure in which, for example, a length of 4.2 m is one unit and three units of pillar 311 are added. As shown in FIGS. 16 and 17, a connecting band 316 is wound around the joint portion of the two pillars 311 almost halfway around both pillars 311 having a circular cross-sectional shape. A pin 317 is driven through the connecting band 316 and the pillar 311 to connect the two pillars 311.

The two pairs of columns 311 are connected by a connecting plate 312 forming a vertical plane at appropriate intervals. A group of pillars consisting of two pairs of pillars 311 adjacent to each other, in which the connecting plate 312 of two pairs of pillars 311 adjacent to each other and the vertical pieces at both ends of the U-shaped connecting metal fitting 313 are fastened with bolts and nuts. The 311s are substantially integrally coupled. The two groups of pillars 311 having four pillars 311 as one group are described by having vertical pieces at both ends of an inverted U-shaped connecting metal fitting 318 fastened to the connecting plate 312 of each group with bolts and nuts. Two groups of pillars 311 are integrally connected.

As shown in FIGS. 3 and 4, the protective material support 3 has a length spanning a plurality of layers of the building 1. In the illustrated example, it has a sufficient length to span five layers. The floor of the building 1 to be demolished is assumed to be a high-rise building with five or more floors, and has a structure suitable for it. The protective material support 3 is installed so as to vertically penetrate the opening 10 formed in the floor 100 of each floor of the building 1. The lower end of the protective material support 3, that is, the lower end of the support column 32 is placed on the load receiving member 6 that closes the opening 10 formed in the floor 100 on the floor where the lower end is located, and rests on the protective material support 3. The load is supported by the load receiving member 6.

A jack 33 is interposed between the lower end of the support column 32 and the load receiving member 6. By interposing the jack 33, the height of the protective material support 3 as a whole, the height of the support column 32, and the like can be finely adjusted.

The protective material support 3 can move in the vertical direction according to the dismantling process of the building 1, and has the guide rail 7 that guides the movement. As shown in FIGS. 7 to 16, the guide rail 7 is attached in parallel with the protective material support 3 and integrally with the protective material support 3. The guide rail 7 has, for example, a length that leaves one unit at the upper end of the tower 31 and one unit at the lower end of the column 32. The guide rails 7 are arranged on both sides of the tower 31 and the columns 32. An intervening member 327 is interposed between each guide rail 7 and the pillar 321 constituting the strut 32, and the intervening member 327 keeps a constant distance between each guide rail 7 and each pillar 321.

[Guide member for protective material support]
The protective material support penetrating the floor 100 of the plurality of layers is guided to move in the vertical direction by the guide member 5 at the position of the opening 10 of each floor 100. The structure of the guide member 5 is shown in FIGS. 8, 9, 12 to 15, and the like. Two guide members 5 are arranged near the opening 10 of the floor 100 on each floor to individually guide the two guide rails 7.

The guide member 5 is mainly composed of a mode for guiding the movement of the guide rail 7 and a guide clamp 51 for immovably clamping the guide rail 7. A pair of claws 52 extend from the guide clamp 51 so as to sandwich the guide rail 7 from both sides. A roller 53 is rotatably supported by a shaft on each claw 52. The guide rail 7 has a quadrangular cross-sectional shape, and a V-shaped peripheral groove is formed on the outer periphery of the roller 53 so that the roller 53 is in contact with the diagonal position of the quadrangle.

The guide clamp 51 is fixed to the fixing block 55 fixed to the floor 100 on both sides of the opening 10 via the grip member 54. By setting the guide clamp 51, it is possible to switch between a mode in which the roller 53 rotates to guide the movement of the guide rail 7 and a mode in which the guide rail 7 is firmly sandwiched by the roller 53 and the relative movement with the guide rail 7 is clamped. .. The fixed block 55 is a square columnar member that is long in the left-right direction, and the position of the fixed block 55 can be adjusted in the length direction of the fixed block 55 to adjust the guide clamp 51 to an appropriate position.

It has a pair of tower fixing brackets 314 and 3141 shown in FIGS. 14 and 15 so that the fixing mode of the protective material support 3 can be held more stably. One tower fixing bracket 314 is fixed over a pair of holding brackets 315 installed at a position sandwiched between two fixing blocks 55 of, for example, the floor 100 on the uppermost floor of the building 1 to be demolished. The tower fixing bracket 314 is a U-groove-shaped bracket, and one vertical piece faces the four columns 311.

The other tower fixing bracket 3141 is also a U-groove-shaped bracket, and one vertical piece faces the vertical piece of the tower fixing bracket 314 with the four pillars 311 sandwiched between them. The opposing vertical pieces of the tower fixing brackets 314 and 3141 are fastened with bolts and nuts, and the protective material support 3 is immovably restrained. By removing the tower fixing brackets 314 and 3141 and releasing the clamp by the guide clamp 51, the protective material support 3 can be made movable.

[Drive]
A drive device for moving the protective material support 3 up and down under the load of the protective material support 3 itself and the load of the protective material 2 is added to the protective material support 3. As shown in FIGS. 3 to 7, the drive device mainly includes a winch 35, and has a wire 16 that is wound up and unwound by the winch 35. As shown in FIG. 13, the tip of the wire 16 is connected to an inverted U-shaped hanging metal fitting 17 provided at an appropriate height position of the support column 32.

The wire 16 is folded back by the pulley 12 above the hanging metal fitting 17 to reach the winch 15. The pulley 12 is rotatably supported by a holding metal fitting 328 on a beam 102 that supports a floor 100 on an appropriate level among a plurality of levels to be dismantled on the lower surface side. In the illustrated example, both ends of a wire 16 horizontally routed across two pulleys 12 supported at the same level reach a winch 15 and a hanging bracket 17, respectively.

As shown in FIGS. 6 and 7, the winch 15 is of a type that is manually rotated and operated, and is installed on an appropriate pedestal so that the manual operation is easy. If the wire 16 is wound up by the winch 15, the protective material support 3 can be raised, and if the wire 16 is rewound, the protective material support 3 can be lowered. A winch 15 is provided for each of the plurality of wires described at the beginning, and each winch is operated synchronously to move the protective material support 3 up and down synchronously. The winch 15 may be an electric or other type of winch that operates synchronously under electrical control.

[Installation structure of protective material]
18 to 23 and the like show the installation structure of the protective material 2. As described above, of the plurality of protective material supports 3 installed on the opposite side edges of the building 1, two on one side and two on the other side facing the same are paired and totaled. Two wires 4 are stretched so as to cross each other on the four protective material supports 3. The protective material 2 is installed by these two wires 4. The protective material support 3 is also installed at a position where the two wires 4 intersect, and as shown in FIG. 23, the two wires 4 are crossed by a support rod 319 extending upward from the upper end of the protective material support 3. Supporting in position.

The protective material 2 has sufficient strength and density to prevent demolition materials such as debris and metal pieces and dust from scattering when the building 1 is dismantled. In this embodiment, a protective net is used as the protective material 2. As shown in FIGS. 2 and 21, a plurality of protective material supports 3 are installed facing each other on both sides of the building 1, and are supported by two protective material supports 3 on one side and four protective material supports 3 on both sides. One protective material 2 is supported by the two wires. A plurality of protective materials 2 are supported by such a support structure, and the top floor of the building 1 is covered with the plurality of protective materials 2. Both side edges of the adjacent protective materials 2 overlap each other and cover the sky above the top floor of the building 1 without any gaps.

As shown in FIG. 18, the protective material 2 has four sides bordered by wires, ropes, and the like, and one wire 4 penetrates a ring 42 to which wires and the like extending from the respective corners are connected. Each wire 4 is individually hung on a U-shaped hanging bracket 41 installed at the upper end of the protective material support 3, and thus on the upper end side portion of the tower 31, corresponding to the number of wires 4.

In the example shown in FIG. 18, four hanging metal fittings 41 are installed at the upper end of the protective material support 3 via the hanging metal fittings mounting member 40. The hanging metal fitting installation member 40 is fixed to two pillars 311 by bolts 402. The hanging metal fitting installation member 40 has a number of hanging metal fitting support plates 401 corresponding to the hanging metal fitting 41 in a vertical manner, and each hanging metal fitting support plate 401 holds the hanging metal fitting 41.

Each wire 4 bends downward at a position of the hanging metal fitting 41 at a substantially right angle from the horizontal direction, supports the protective material 2 at the horizontal portion, and the downward bent portion is a lever block (registered trademark) shown in FIG. 24 and the like. ) 11 is connected to the protective material support 3. The lever block 11 is installed on the protective material support 3 at a height suitable for a person to stand on the floor 100 and operate it. A pulley may be used instead of the hanging metal fitting 41.

As is well known, the lever block 11 is a tool that can pull the chain by operating the lever. By pulling the wire 4 with the lever block 11, the tension of the wire 4 and therefore the tension of the protective material 2 can be adjusted. The lever block 11 has a built-in brake mechanism and can maintain the tension of the wire 4. Further, the tension of the wire 4 can be relaxed by releasing the brake.

By adjusting the tension of the wire 4 and therefore the tension of the protective material 2, between the protective material 2 and the top floor of the building 1 being demolished, the top floor of the building 1 can be used for demolition work using heavy machinery or the like. Secure a space that does not hinder you. Therefore, the protective material support 3 is installed so that the upper end of the protective material support 3 is sufficiently higher than the top floor of the building 1.

[Scattering prevention method]
The method of preventing scattering by the scattering prevention device described above will be described. On the floor 100 of each floor of the building 1 to be demolished, an opening 10 is formed in advance on a virtual line in the vertical direction adjacent to the inner side surface of the facing outer wall 101. An opening 10 is formed in the floor 100 of each floor even below the position where the two wires connecting the four protective material supports 3 facing each other diagonally intersect. The protective material support 3 is installed through these openings 10.

As shown in FIGS. 2 to 4, the protective material support 3 has a sufficient length to reach five layers. Since the building 1 is demolished in order from the top floor, a protective material support 3 is installed so that the sky above the top floor can be covered with the protective material 2. The protective material support 3 is divided into a support column 32 and a steel tower 31, and is installed at a predetermined position to be connected to each other. FIG. 5 shows the installation process of the protective material support 3 in order.

The example of the illustrated building 1 is a 30-story building, and as shown in FIG. 5A, the opening 10 formed on the floor 27F on the 27th floor is closed with the load receiving member 6. Next, the support column 32 constituting the protective material support 3 is passed through the opening 10 from the floor 30F on the 30th floor to the floor 28F on the 28th floor, and the lower end of the support column 32 is passed through the jack 33 to the load receiving member on the 27th floor. Place on 6.

The support column 32 is substantially integrated with the two guide rails 7 as described with reference to FIGS. 8 and 9. The substantially integral support column 32 and the guide rail 7 can be installed by being inserted into each of the openings 10 while being lifted and suspended by, for example, a crane. The guide rail 7 has a length from the floor RF on the top floor to the floor 28F on the 28th floor. The guide member 5 installed around each opening 10 on the top floor to the 28th floor can guide the vertical movement of the guide rail 7 and can be clamped immovably.

Next, as shown in FIG. 5B, the tower 31 is suspended by a crane and inserted between the pair of guide rails. The lower end of the tower 31 and the upper end of the column 32 are connected by the structure described with reference to FIG. A winch 15 is installed near the load receiving member 6 on the 27th floor. A pulley 12 is installed above the winch 15 on the beam 102 that supports the floor 29F on the 29th floor. The wire 16 extending from the winch 15 is hung on the pulley 12 and folded downward, and the tip of the wire 16 is connected to the hanging metal fitting 17 attached to the support column 32 as shown in FIG. 13A or the like. In the example shown in FIG. 5, the wire 16 is connected to the support column 32 on the 28th floor.

In this way, all the protective material supports 3 are installed, and the wires 4 for supporting the protective material 2 are stretched by each protective material support 3. The stretching structure of the wire 4 has already been described. FIGS. 1 and 20 show a state in which the wire 4 is stretched. The protective material 2 is installed by the stretched wire 4. FIG. 18 shows an installation structure of the protective material 2 by the wire 4, and FIG. 21 shows a state in which a plurality of protective materials 2 are installed and the sky above the top floor of the building 1 is covered with the protective material 2.

The floor of the top floor is dismantled with the sky above the top floor of the building 1 covered with the protective material 2, and if there is an outer wall, the outer wall is also dismantled. Each time the dismantling is performed in order from the top floor, each protective material support 3 is lowered together with the protective material 2, and the sky above the top floor at that stage is covered with the protective material 2 to prevent scattering of objects due to dismantling.

FIG. 2 shows an image in which the protective material support 3 is lowered together with the protective material 2 in order to shift from the dismantling of the floor RF on the rooftop floor to the dismantling of the floor 30F on the 30th floor below. In reality, all the protective material supports 3 are lowered in synchronization, and the sky above the next layer to be dismantled is covered with the protective material 2.

3 and 4 show how the protective material support 3 is lowered as the dismantling of each layer progresses. FIGS. 3 (a) and 4 (a) show an aspect of the protective material support 3 when dismantling the floor RF or the like on the rooftop floor, and as described above, the upper end of the protective material support 3 is from the floor RF. It is in a high enough position. The protective material 2 supported by the protective material support 3 is sufficiently high above the floor RF, and a heavy machine can be introduced on the floor RF to perform the dismantling work.

When performing the dismantling work, all the guide members 5 firmly sandwich the guide rail 7 by the rollers 53 so that each protective material support 3 is stably held. Further, the tower 31 is immovably fixed by the tower fixing bracket 314 shown in FIG. At the final stage of the process of dismantling the floor RF on the rooftop floor, the guide member 5 on the rooftop floor is removed, and the floor portion on which the guide member 5 is arranged is also dismantled.

After the dismantling of the floor RF and the like is completed, each protective material support 3 is lowered by one level in order to dismantle the floor 30F on the 30th floor. In order to lower the protective material support 3, first, the guide rail 7 is pinched by the guide member 5 and the tower 31 is released from the tower fixing bracket 314. Then, the winch 15, which is a drive device, is operated to pull up the protective material support 3, and the protective material support 3 is floated from the load receiving member 6 on the floor 27F on the 27th floor. In this state, the load receiving member 6 is removed, and the opening 10 is opened to allow the protective material support 3 to descend.

When the protective material support 3 is lowered together with the protective material 2, the tension of the wire 4 is relaxed by operating the lever block 11 as necessary. After lowering the protective material support 3, tension is applied to the wire 4 by operating the lever block 11.

Next, the opening 10 of the floor 26F on the 26th floor is closed with the load receiving member 6, the winch 15 is operated to rewind the wire 16, and the protective material is supported as shown in FIGS. 3 (b) and 4 (b). The body 3 is lowered and the load is received by the load receiving member 6. As the protective material support 3 descends, the protective material 2 also descends, and the protective material 2 covers the sky above the 30th floor. The guide rail 7 is sandwiched by the roller 53 of the guide member 5, and the tower 31 is fixed by the tower fixing bracket 314 to prepare for dismantling the floor 30F and the outer wall on the 30th floor.

The dismantling of the 30th floor is performed in the same manner as the dismantling of the rooftop floor, and in preparation for the dismantling of the 29th floor, the protective material support 3 is lowered by one level as shown in FIGS. 3 (c) and 4 (c). The procedure for lowering the protective material support 3 at this time is also as described above. That is, the protective material support 3 is pulled up by the winch 15, the load receiving member 6 on the 26th floor is removed, the load receiving member 6 is installed in the opening 10 on the 25th floor, and one layer of the protective material support 3 by the winch 15 is installed. The procedure is descent. After the protective material support 3 descends, the protective material support 3 is fixed as described above to prepare for the dismantling of the 29th floor.

Since the pulley 12 is installed on the beam 102 that supports the floor 29F on the 29th floor, the pulley 12 is removed before the floor 29F is dismantled. In order to dismantle the floor 29F and dismantle the floor 28F on the 28th floor, as shown in FIG. 3D, the floor 26F on the 26th floor, which is the lowest floor through which the protective material support 3 penetrates, is used. The slide wheel 12 is relocated to the supporting beam 102. The winch 15 will also be relocated to the lower floors. In the example shown in FIGS. 3 (c) and 3 (d), the winch 15 is relocated from the floor 27F on the 27th floor to the floor 24F on the 24th floor.

The protective material support 3 is pulled up by the winch 15, the pulley 12, and the wire 16 that have been relocated in this way, the load receiving member 6 on the 25th floor is removed, and the load receiving member 6 is installed in the opening 10 on the 24th floor. Next, the protective material support 3 is lowered by one level by the winch 15, and the load of the protective material support 3 is supported by the load receiving member 6 on the 24th floor.

After that, every time one layer is dismantled, the protective material 2 is lowered by one layer together with the protective material support 3, and the sky above the dismantling layer is covered with the protective material 2. Every time the dismantling of three layers is completed, the winch 15 and the pulley 12 are relocated as described above, the dismantling of the building 1 is continued, and finally all of the building 1 is dismantled. The protective material 2 prevents the scattering of rubble and demolition materials generated by dismantling each floor of the building 1, and the safety around the building 1 being demolished is ensured.

[Effect of Examples]
According to the embodiment of the shatterproof device and the shatterproof method according to the present invention, the protective material support 3 can be lowered together with the protective material 2 each time the building 1 is sequentially dismantled from the top floor. The protective material support 3 has a length that spans a plurality of floors of the building 1 and can be shorter than the length that spans all the floors of the building 1, so that the length is short and the weight is light. The structure can be simplified.

Since the driving device for moving the protective material support 3 up and down has a light weight, the force required to drive the protective material support 3 may be small, and the cost can be reduced. Further, since the drive device can be composed of the winch 15, the wire 16, and the pulley 12, and is relatively simple, the cost can be reduced in this respect as well.

The drive unit including the winch 15, the wire 16, and the pulley 12 can be relocated for each disassembly of a plurality of layers, and does not need to be relocated for each disassembly of one layer. Therefore, the labor required for relocating the drive device can be reduced.

The protective material support 3 is installed through the openings 10 of the floors of a plurality of layers, and the guide member 5 installed around the openings 10 of each layer guides the vertical movement of the protective material support 3, so that the protective material is a protective material. The vertical movement of the support 3 can be stably guided. Further, the guide member 5 can be made into a simple structure.

[Modification example]
The shatterproof device and shatterproof method according to the present invention are not limited to the configuration of the illustrated embodiment, and the design can be changed without departing from the technical idea described in each claim. be. A modification example is described below.

The drive method of the drive device is arbitrary, and may be a manual operation method as in the embodiment, or may be an electric force or a drive method by another machine. If the drive method by electric force is used, all the protective material supports can be moved synchronously while detecting the amount of movement of all the protective material supports.

In the embodiment, the protective material support 3 is divided into a support column 32 and a steel tower 31, and these are connected vertically, but it is not essential to divide them into the support column 32 and the steel tower 31, and the whole is a support column. It may be only the part of the tower or only the part of the tower. Further, the configuration of the support column 32 and the steel tower 31 itself is not limited to the configuration of the illustrated embodiment.

In the embodiment, two protective material supports 3 installed on the opposite side edges of the building 1 are paired, and two wires 4 are crossed with each other on a total of four protective material supports 3. The protective material 2 is held by these two wires 4. A protective material support 3 is also installed at a position where the two wires 4 intersect to support the two wires 4 at the intersection. However, depending on the conditions such as the distance between the two protective material supports 3 in a pair, the two wires do not necessarily have to cross each other, and the two protective material supports 3 are in the middle of each other. It may not be necessary to provide another protective material support 3.

Not only the protective material 2 that covers the sky above the top floor of the building 1 but also another protective material that surrounds the peripheral portion of the top floor may be provided following the protective material 2. This other protective material may be an extension of the protective material 2 or may be a protective material separate from the protective material 2.

1 Building 2 Protective material 3 Protective material 3 Protective material support 4 Wire 5 Guide member 6 Load receiving member 7 Guide rail 8 Scaffolding 10 Opening 11 Lever block 12 Slider 15 Winch 16 Wire 17 Hanging bracket 31 Steel tower 32 Pillar 33 Jack 40 Hanging bracket installation member 41 Hanging bracket 42 Ring 43 Pipe 51 Guide clamp 52 Claw 53 Roller 54 Grip member 55 Fixed block 100 Floor 101 Outer wall 102 Beam 311 Pillar 312 Connecting plate 313 U-shaped connecting bracket 314 Steel tower fixing bracket 315 Holding bracket 316 Connecting band 317 Pin 318 Metal fittings 319 Support rod 321 Pillar 322 Connecting plate 323 End plate 324 Connecting metal fittings 325 Rising part 327 Intervening member 328 Holding metal fittings 329 Bottom plate

Claims (13)

It is a shatterproof device for objects that accompany the dismantling of buildings from the top floor.
A protective material that can cover the sky above the building,
A protective material support that has a length that spans a plurality of layers of the building and is capable of vertically penetrating an opening formed in the floor of the building by connecting the edge portion of the protective material to the upper end portion. When,
A guide member that guides the protective material support in the opening so as to be movable in the vertical direction, and
A drive device that moves the protective material support in the vertical direction,
It has a load receiving member that is arranged at the position of the opening and supports the lower end of the protective material support.
The load receiving member is a shatterproof device that can be arranged and removed at the position of the opening while the driving device is moving the protective material support upward. The shatterproof device according to claim 1, wherein the guide member can switch between a mode in which the protective material support is movably guided in the vertical direction and a mode in which the protective material support is clamped so as not to be movable. The shatterproof device according to claim 1 or 2, wherein the drive device is a winch that operates on a lower floor than the floor to be dismantled, and has a wire connecting the winch and the protective material support. The shatterproof device according to claim 3, further comprising a pulley that folds the wire above the connection position with the protective material support. The anti-scattering device according to claim 1, 2 or 4, wherein the pulley is installed so that the wire spans a plurality of layers. The protective material support is further provided with a guide rail which is installed along the length direction of the protective material support and guides the protective material support so as to be relatively movable in the vertical direction, and the guide member is the guide member. The shatterproof device according to any one of claims 1 to 5, which can switch between a mode in which the guide rail is movably guided in the vertical direction and a mode in which the guide rail is clamped immovably at the opening. The protective material support has a steel tower to which the protective material is bonded at the upper end and a support column connected to the lower end of the steel tower to support the steel tower, and the support column is an interposition that keeps a constant distance from the guide rail. The shatterproof device according to claim 6, further comprising a member. It is a method to prevent the scattering of objects that accompanies the dismantling of a building from the top floor.
A protective material support having a protective material bonded to the upper end thereof, which can cover the sky of the building, is passed through an opening formed in the floor of the building.
The protective material support is guided in the opening so as to be movable in the vertical direction.
A load-bearing member that supports the lower end of the protective material support is placed at the position of the opening and can be removed.
The upper floor of the building is dismantled in a manner in which the load receiving member is arranged at the position of the opening, the load receiving member is removed from the position of the opening, and the load receiving member is arranged at the position of the opening on the lower floor to protect the building. A method for preventing scattering by lowering a material support and lowering the protective material as the dismantling of the building progresses. A claim for using a drive device for moving the protective material support in the vertical direction, and arranging and removing the load receiving member at the position of the opening in a state where the protective material support is moved upward by the drive device. 8. The shatterproof method according to 8. The anti-scattering device according to claim 8 or 9, wherein the load receiving member is installed one level below each time the building is dismantled one level, and the protective material support is lowered by one level. The scattering prevention method according to claim 9 or 10, wherein the drive device having a winch and a pulley is used, and the winch and the pulley are moved downward by the plurality of layers each time a plurality of layers are disassembled. With the protective material support moved upward by the drive device, the load receiving member is removed, the load receiving member is installed at the position of the opening on the lower floor, and the protective material support is installed by the drive device. The method for preventing scattering according to any one of claims 8 to 11, wherein the load receiving member is lowered to the position of the load receiving member, and the sky above the layer to be dismantled is covered with the protective material. The guide means for movably guiding the protective material support in the vertical direction at the opening has a function of switching between a mode in which the protective material support is movably guided in the vertical direction and a mode in which the protective material support is clamped immovably. The method for preventing scattering according to any one of claims 8 to 12.

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