Debris prevention protection system and method for demolishing structures using the same

Abstract

To provide a scattering prevention cure system which is relatively a light-weight and can be easily replaced by releasing a connection part and having a lifting device for supporting a scattering prevention curing body support body in an inside space of a temporary support column which can be partially removed.SOLUTION: A scattering prevention cure system according to the invention comprises: a scattering prevention curing body support body having at least two vertical truss frames and an upper support body; a scattering prevention curing body for covering upper floors of an object structure; a temporary support column formed by piling unit columns including a column member and a connection member for connecting the column members so that the vertical truss frame can lift in an inside space; and a lifting device situated at a lower end of the vertical truss frame for lifting the scattering prevention curing body support body with the temporary support column as the support body. Each unit column of the temporary support column can be divided or extended in a horizontal direction and can be removed individually even when the lifting device or the vertical truss frame penetrate the inside space by releasing a connection part which can be fixed and released.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a splash prevention curing system and a structure demolition method using the same. In particular, by providing a lifting device that can lift and lower a splash prevention curing body support in the internal space of a temporary support column that can be disassembled by releasing and dividing a connecting portion and can be partially removed, the present invention relates to a relatively lightweight splash prevention curing system that is easy to replace and a structure demolition method using the same.

Background Art

[0002] High-rise buildings that have been built so far are also facing the need to be demolished for rebuilding due to factors such as aging, changes in the usage environment despite having a service life, and redevelopment. When demolishing a target structure such as a high-rise building, in order to ensure the safety of the surrounding area during the demolition work, the surrounding and upper part of the target structure are covered with a splash prevention curing body such as a sheet or a net to prevent the scattering of fragments and the like generated during the demolition. The demolition of a target structure such as a high-rise building is usually carried out by lifting a demolition crane to the top floor and installing it, and then proceeding with the demolition in order from the upper floor. Along with this, the demolition of the scaffolding constructed around the outer wall of the demolished upper floor and the removal of the splash prevention curing body are carried out. However, since the splash prevention curing body covering the upper part of the target structure cannot be removed, it is necessary to sequentially lower it to the lower layer according to the demolition status of the target structure.

[0003] If the protective covering that covers the top of the target structure is attached to scaffolding erected around the structure, the height of the protective covering will decrease as the scaffolding is dismantled, making the management and operation of the demolition work easier. However, there is a restriction that the height of scaffolding erected independently above the target structure can be limited to two levels. In the case of typical 1.8m high scaffolding, even two levels would be 3.6m high, which is not enough height to secure working space for heavy machinery installed on the top floor. For this reason, when demolishing large target structures, a construction method is used in which a structure such as a truss is installed to support the protective covering separately from the scaffolding, and the protective covering is then covered from above. Therefore, there is a challenge in that it is not easy to sequentially lower the protective covering to lower floors according to the demolition progress of the target structure, as it involves the work of lowering heavy trusses.

[0004] Patent Document 1 discloses a construction elevator consisting of guide rails and lifting platforms, installed on both sides of a high-rise building and extending from the ground to the rooftop; a plurality of roof trusses consisting of truss steel members of a predetermined length, connected and stretched across the rooftop of the high-rise building and attached to the lifting platforms of the construction elevator; and a scattering prevention net and sheet attached to the roof trusses. When the high-rise building is demolished toward the ground by heavy machinery lifted by a crane and placed on the rooftop, the roof trusses are lowered by the construction elevator in accordance with the progress of the floor demolition.

[0005] According to the invention described in Patent Document 1, the debris-preventing net and sheet attached to the roof truss can be easily lowered together with the roof truss by a construction elevator, thus enabling highly efficient demolition work. However, it is necessary to install multiple construction elevators to support multiple roof trusses that can cover at least the entire structure, which presents challenges in terms of installation effort and system costs.

[0006] Therefore, there is a need for a debris-prevention protection system that has strength separate from scaffolding, can be installed relatively easily, reliably supports the debris-prevention protection material, and allows the debris-prevention protection material to be lowered relatively easily as the demolition work progresses, as well as a method for demolishing structures using the same. [Prior art documents] [Patent Documents]

[0007] [Patent Document 1] Japanese Patent Publication No. 2019-167813 [Overview of the project] [Problems that the invention aims to solve]

[0008] The present invention has been made in view of the problems with the above-mentioned conventional scattering prevention curing systems, and the object of the present invention is to provide a scattering prevention curing system that is relatively lightweight and easy to replace, and a method for demolishing a structure using the same, by providing a lifting device that supports a scattering prevention curing body support so that it can be raised and lowered in the internal space of a temporary support column that can be separated by releasing the connecting part and partially removed. [Means for solving the problem]

[0009] To achieve the above objective, the present invention provides a scattering prevention protection system comprising: a scattering prevention protection support body comprising at least two vertical truss frames and an upper support body spanning the upper ends of the at least two vertical truss frames; a scattering prevention protection body covering the upper floors of the target structure from above the scattering prevention protection support body; temporary support columns formed by stacking unit columns vertically, each unit column comprising column members erected at the four corners of a rectangular column and connecting members connecting the column members, with the internal space being such that the vertical truss frames can move up and down; and attached to the lower ends of each of the vertical truss frames, within the temporary support columns. The structure includes a lifting device located within the internal space that raises and lowers the scattering prevention support body using the temporary support column as a support, the lifting device comprising a main body including a drive unit, a telescopic rod that extends and retracts vertically, and a lower fixing part and an upper fixing part located at the lower end of the telescopic rod and in the non-extendable part above the lower end, respectively, which can be independently fixed to or released from the temporary support column, and each unit column of the temporary support column is provided with a connecting part that can be fixed and released, and by releasing the connecting part, the internal space can be divided or unfolded horizontally and individually removed even when the telescopic rod or the vertical truss frame is penetrating it.

[0010] Preferably, the column members located at least diagonally opposite the unit column are provided with a locking structure for engaging the upper or lower fixing part of the lifting device. Preferably, the lifting device supports the scattering prevention support for the nurturing organism by having at least one of the lower fixing portion and the upper fixing portion fixed to the temporary support column, and the height of the temporary support column can be reduced by releasing and removing the connecting portion of the unit column located above the unit column to which the lower fixing portion or the upper fixing portion is fixed, while the lower fixing portion or the upper fixing portion is fixed.

[0011] Preferably, the system further includes a remote control for controlling the lifting devices individually or in a synchronized manner to perform lifting and lowering operations. The upper support is either a truss frame or a wire. If the upper support is a wire, it is preferable that the wire has a length equal to or greater than the distance between the two vertical truss frames that span the upper end, and that the wire is equipped with tension-applying means at its end or in the middle for applying a predetermined tension to the wire, thereby installing it with the tension necessary to support the scattering prevention curing material while preventing excessive bending loads from being applied to the two vertical truss frames.

[0012] To achieve the above objective, the present invention provides a method for demolishing a structure, comprising the steps of: forming a temporary support by stacking unit columns vertically, each unit column comprising a column member erected at the four corners of a rectangular column and a connecting member connecting the column members; forming a temporary support by including at least two vertical truss frames and an upper support spanning the upper ends of the at least two vertical truss frames, a scattering prevention curing support that supports a scattering prevention curing material covering the upper part of the target structure, and lifting devices attached to the lower ends of each of the vertical truss frames, such that the vertical truss frames can be raised and lowered within the internal space of the temporary support; covering the upper floors of the target structure with scattering prevention curing material from above the scattering prevention curing support; demolishing the top floor of the target structure; and rearranging the scattering prevention curing support and scattering prevention curing material to the lower floors, wherein the lifting device includes a drive unit. The device comprises a main body, a telescopic rod that extends and retracts vertically, and a lower fixing part and an upper fixing part located at the lower end and the non-extendable part above the lower end of the telescopic rod, which can be independently fixed to or released from the temporary support column, and each unit column of the temporary support column is provided with a connecting part that can be fixed and released, and by releasing the connecting part, it is formed to be divided or unfolded horizontally and individually removable, and the step of moving the scattering prevention curing material support and scattering prevention curing material to the lower layer includes the steps of extending the telescopic rod with the upper fixing part of the lifting device locked to the temporary support column and locking the lower fixing part to the temporary support column, releasing the connecting part of the unit column located between the upper fixing part and the lower fixing part or the unit column located above the upper fixing part and removing the unit column, and retracting the telescopic rod to lower the scattering prevention curing material support. [Effects of the Invention]

[0013] According to the debris-prevention protection system and structural demolition method using the same, the debris-prevention protective support necessary for the demolition of the target structure is supported by a temporary support column formed by stacking unit columns, each having a column member and connecting members that connect the column members, in a vertical direction. Since each unit column is formed so that it can be removed by releasing the connecting parts and dividing or unfolding it horizontally, it is possible to raise and lower the debris-prevention protective support column using a simple and inexpensive lifting device such as a jack in the internal space of the temporary support column, and to proceed with the demolition of the lower floors sequentially while partially removing the unit columns. For this reason, there is no need to prepare an expensive construction elevator or to perform preliminary work such as installing guide rails for a construction elevator in advance.

[0014] Furthermore, according to the scattering prevention curing system and the structural demolition method using the same, a lifting device is attached to each vertical truss frame of the scattering prevention curing support body, and the scattering prevention curing support body can be replaced while always being supported by temporary support columns via the lifting device. Therefore, when replacing the support body, there is no need to separately prepare a lifting means such as a crane to suspend and support the scattering prevention curing support body.

[0015] According to the scattering prevention curing system and the structural demolition method using the same, since a lifting device is attached to each vertical truss frame of the scattering prevention curing support, even when multiple scattering prevention curing support structures are provided, they can be lifted individually or the entire system can be lifted and lowered synchronously. This allows for adjustment of the replacement method depending on the progress of the demolition work, such as replacing the scattering prevention curing support structures in the completed demolition sections first. [Brief explanation of the drawing]

[0016] [Figure 1] This diagram schematically shows the overall configuration of a scattering prevention protection system according to an embodiment of the present invention. [Figure 2] This figure schematically shows the planar structure of the mounting portion of a temporary support column according to an embodiment of the present invention. [Figure 3] It is a diagram showing the structure of a unit column of a temporary support according to an embodiment of the present invention. [Figure 4] It is a diagram showing a method for removing a unit column of a temporary support according to an embodiment of the present invention. [Figure 5] It is a diagram showing a method for removing another unit column of a temporary support according to an embodiment of the present invention. [Figure 6] It is a diagram schematically showing the configuration of a lifting device according to an embodiment of the present invention. [Figure 7] It is a diagram showing step by step the state during replacement according to an embodiment of the present invention. [Figure 8] It is a flowchart for explaining a method for dismantling a structure according to an embodiment of the present invention.

Mode for Carrying Out the Invention

[0017] Next, a specific example of a mode for carrying out the splash prevention curing system according to the present invention will be described in detail while referring to the drawings. FIG. 1 is a diagram schematically showing the overall configuration of a splash prevention curing system according to an embodiment of the present invention. FIG. 1(a) is a view of the structure to be dismantled seen from the front, and FIG. 1(b) is a cross-sectional view of FIG. 1(a) seen from the side.

[0018] Referring to FIGS. 1(a) and 1(b), a splash prevention curing system 1 according to an embodiment of the present invention includes at least two vertical truss frames 11 provided along two opposing outer walls 101 such as the front and rear surfaces of a target structure 100 to be disassembled, and an upper support 12 spanned over the upper ends of the at least two vertical truss frames 11. A splash prevention curing body support 10, a splash prevention curing body 20 covering the upper floor of the target structure 100 from above the splash prevention curing body support 10, a unit column 31 including column members 32 erected at the four corners of a square column and connecting members 33 connecting the column members 32 are stacked vertically, and a temporary support 30 is formed such that the internal space allows the vertical truss frames 11 to move up and down. And a lifting device 40 attached to each lower end of the vertical truss frame 11 and located within the internal space of the temporary support 30, which uses the temporary support 30 as a support to lift and lower the splash prevention curing body support 10. Further, a scaffold 50 is provided so as to surround the outer periphery of the target structure 100 and the temporary support 30, and a soundproof panel 25 is attached to the outer peripheral side of the scaffold 50. Note that in FIG. 1(a), the scaffold 50 and the soundproof panel 25 on the front side are omitted for easy viewing of the temporary support 30.

[0019] The splash prevention curing system ① according to an embodiment of the present invention is a splash prevention curing system 1 applicable to a method of disassembling a structure in which a heavy machine 60 for disassembly is lifted to the uppermost floor of a target structure 100 to be disassembled mainly, and the disassembly of the target structure 100 is advanced while securing a working space for the heavy machine 60. In order to secure a space for the free operation of the heavy machine 60, the splash prevention curing body support 10 supports the splash prevention curing body 20 at a height sufficiently higher than the height of the uppermost part of the scaffold 50. The disassembly proceeds sequentially from the uppermost floor toward the lower floors, and in accordance with this, the heavy machine 60 is also sequentially lowered to the lower floors to proceed with the disassembly.

[0020] It should be noted that there is an unclear "①" in the text of . If this is an error in the original text, please correct it according to the actual situation for a more accurate translation.When demolishing the target structure 100, it is necessary to cover the perimeter and top of the target structure 100 with sheets or nets to ensure the safety of the surrounding area during the demolition work. For the perimeter, soundproof panels 25 attached to the outer perimeter of the scaffolding 50 are used to reduce the impact of noise from the demolition work on the surrounding area and to prevent the scattering of debris, etc. For the top, it is common to cover the upper floors of the target structure 100 with a debris-preventing protective material 20 such as a net. As the demolition of the target structure 100 progresses, the height of the target structure 100 decreases, so it is desirable to reduce the height of the debris-preventing protective material 20 accordingly.

[0021] Regarding the surrounding area, the scaffolding 50 and soundproof panels 25 can be removed sequentially as the target structure 100 is dismantled from the upper floors. However, the dust-preventing protective material 20 covering the upper part of the target structure 100 needs to be lowered sequentially in accordance with the dismantling of the target structure 100. The dust-preventing protective system 1 according to an embodiment of the present invention is equipped with a temporary support column 30 that supports the dust-preventing protective material support 10 that supports the dust-preventing protective material 20 covering the upper part in a way that allows it to be raised and lowered, and a lifting device 40 located inside the temporary support column 30 that raises and lowers the dust-preventing protective material support 10, thereby making it possible to lower the dust-preventing protective material 20 which rises and lowers together with the dust-preventing protective material support 10.

[0022] At this time, if the temporary support columns 30 are not gradually lowered in accordance with the demolition of the target structure 100, the upper support 12 of the debris-preventing protective support 10 will get in the way and prevent them from descending. However, when lowering the temporary support columns 30, it is necessary to remove one of the unit columns 31 of the temporary support columns 30 while supporting the debris-preventing protective support 10, but the vertical truss frame 11 and lifting device 40 of the debris-preventing protective support 10 penetrate the internal space of the temporary support columns 30, so they cannot be easily removed.

[0023] Therefore, the unit column 31 of the temporary support column 30 according to the embodiment of the present invention is equipped with a connecting part that can be fixed and released, and by releasing the connecting part, the internal space can be divided or unfolded horizontally and removed individually, even when the vertical truss frame 11 or the lifting device 40 is penetrating it. This makes it possible to raise and lower the scattering prevention support 10 using a simple and inexpensive lifting device 40, such as a jack, within the internal space of the temporary support column 30, without having to prepare an expensive construction elevator or carry out preliminary work such as installing guide rails for the construction elevator, and to proceed with the demolition of the lower floors sequentially while partially removing the unit columns 31.

[0024] Figure 1(a) shows four independently installed dust-preventing support structures 10, but the number of dust-preventing support structures 10 is not limited to this and may be more or less than four depending on the size and planar shape of the target structure 100. Alternatively, two adjacent dust-preventing support structures 10 may be connected horizontally with beam members, and the dust-preventing support structures 10 may be supported by four vertical truss frames 11 to create a more stable structure.

[0025] As the target structure 100 is demolished, the debris-preventing protective support structures 10 are lowered sequentially. However, if there are multiple debris-preventing protective support structures 10, as shown in Figure 1(a), they may be lowered individually or as a whole. Even when they are lowered individually, at least one pair of vertical truss frames 11 supporting the upper support structures 12 must be lowered in sync. Therefore, although not shown in the figure, the debris-preventing protective system 1 according to this embodiment further includes a remote control that controls the lifting and lowering of the lifting devices 40 individually or by synchronizing the lifting and lowering of multiple lifting devices 40.

[0026] In Figure 1(b), the upper support 12 is shown as a V-shaped truss frame, but it may also be a straight truss frame with a flat top. Furthermore, it does not need to be a truss frame as shown in the figure, as long as it can support the scattering prevention curing material 20. For example, the upper support 12 may be a wire. If the upper support 12 is a wire, the wire must have a length equal to or greater than the distance between the two vertical truss frames 11 that span the upper end, and the wire must be equipped with a tension-applying means at its end or in the middle to apply a predetermined tension to the wire, thereby preventing excessive bending loads from being applied to the two vertical truss frames 11 while ensuring that it is installed with the necessary tension to support the scattering prevention curing material 20. Examples of tension-applying means include springs, weights, lever blocks (registered trademark), winches, etc.

[0027] If the tension-applying means is a spring, attach the spring to the middle or at least one end of the wire, and with tension applied to the spring so that appropriate tension is applied, fix both ends of the wire to a fixed part such as a temporary support column 30. If the tension-applying means is a weight, attach weights to each end of the wire while they are hanging down, or fix one end of the wire to a fixed part and attach a weight adjusted to the end of the other end while it is hanging down to achieve the desired tension. If the tension-applying means is a lever block, attach the lever block to the middle or end of the wire, fix both ends of the connection between the lever block and the wire to a fixed part, and then operate the handle of the lever block to wind up the chain of the lever block until the predetermined tension is achieved. If the tension-applying means is a winch, attach the winch to the middle or end of the wire in the same way as the lever block, fix both ends, and then wind up the winch until the predetermined tension is achieved.

[0028] Figure 2 is a schematic diagram showing the planar structure of the mounting portion of the temporary support column according to an embodiment of the present invention. Referring to Figure 2, temporary support columns 30 are installed along the outer wall 101 of the target structure 100, and the temporary support columns 30 are fixed to the outer wall 101 at any height for reinforcement using temporary support column wall ties 37. A vertical truss frame 11 is placed in the internal space of the temporary support columns 30. Scaffolding 50 is formed around the outer perimeter of the outer wall 101 of the target structure 100 and the temporary support columns 30.

[0029] In one embodiment, the distance between the centers of adjacent column members 32 of the temporary support column 30 is 700 mm, and the distance between the centers of adjacent column members of the vertical truss frame 11 is 500 mm. Since the scaffolding 50 and the temporary support column 30 are installed independently, removing the temporary support column 30 does not affect the scaffolding 50. The scaffolding 50 is prevented from overhanging outwards in the location where the temporary support column 30 is installed by not installing the steel planks 51 of the scaffolding 50 in that location. However, since there is a risk of reduced strength in the area where the steel planks 51 are missing, in this embodiment, scaffolding wall ties 52 are installed in the area where the steel planks 51 are missing to provide reinforcement.

[0030] Figure 3 shows the structure of a unit column of a temporary support column according to an embodiment of the present invention, where Figure 3(a) is a plan view, Figure 3(b) is a front view, and Figure 3(c) is a side view. Referring to Figure 3, column members 32 are erected at the four corners of the rectangular prism, and connecting members 33 connect adjacent column members 32. In one embodiment, the connecting members 33 have a portion that connects the column members 32 diagonally like a brace. Referring to Figure 3(a), connecting members 33 are provided at the positions that make up the four sides of the rectangle, but the connecting members 33 on opposing sides on the left and right are formed in a shape in which an x ​​shape is repeated, as shown in Figure 3(c), and are integrally fixed to the column members 32 by a connection method such as welding.

[0031] In contrast, the connecting member 33 shown on the opposing sides in Figure 3(a) has a connecting portion 34 in the middle that can be fixed and released, as shown in Figure 3(b). In one embodiment, the left half of the connecting member 33 and the right half of the connecting member 33 each have a diagonal member portion that resembles a sideways w shape and a connecting portion 34 with a rectangular outer shape and a through hole. When fixing the left and right connecting portions 34, a bolt is passed through them with the through holes of both overlapping and then fixed with a nut. Conversely, when releasing the connecting portion 34, the bolt and nut are removed.

[0032] The shape of the connecting member 33 and the structure and shape of the connecting part 34 are not limited to the form shown in Figure 3. For example, the left half of the connecting member 33 and the right half of the connecting member 33 may be positioned differently in the direction along the column member 32, and each may have a through hole in the direction along the column member 32. The left and right connecting members 33 may be connected by attaching a pin or bolt through both through holes from the direction along the column member 32.

[0033] Furthermore, a locking structure 35 is provided on each column member 32 located at least diagonally opposite the unit column 31. The locking structure 35 is used to lock the lifting device 40 itself when the lifting device 40 supports the scattering prevention support body 10. In one embodiment, the locking structure 35 is formed in a cylindrical shape that penetrates the column member 32 and has disc-shaped flanges at both ends, and multiple locking structures 35 are provided on one column member 32 at predetermined intervals. Figures 3(b) and 3(c) show that four locking structures 35 are provided on the column member 32, but the number of locking structures 35 is not limited to this.

[0034] Figure 4 shows a method for removing a unit column of a temporary support column according to an embodiment of the present invention, with Figure 4(a) showing the fixed state and Figure 4(b) showing the released state. Referring to Figure 4, the fixed state in Figure 4(a) is the same as the plan view shown in Figure 3(a). Figure 4(b) shows the state after the bolts and nuts of the connecting part 34 have been removed from the fixed state. As a result of releasing the connecting part 34, the unit column 31 is divided into a left half and a right half, and can be pulled apart to the left and right as shown by the arrows. Therefore, even when the vertical truss frame 11 passes through the unit column 31 as shown in Figure 2, it can be easily removed.

[0035] Figure 5 shows a method for removing other unit columns of a temporary support column according to an embodiment of the present invention, with Figure 5(a) showing the fixed state and Figure 5(b) showing the released state. Referring to Figure 5(a), the unit column 31 differs from the unit column 31 shown in Figure 4(a). In the figure, the upper connecting member 33, shown on the upper and lower sides, has a connecting portion 34 that is fixed with bolts, nuts, etc., while the lower connecting member 33 has a pivot axis 36 that has a central axis parallel to the extending direction of the column member 32. That is, as shown in Figure 5(b), by releasing the connecting portion 34, the left half of the connecting member 33 and the right half of the connecting member 33 can be rotated to open in the direction of the arrow around the pivot axis 36. By making one of the connecting members 33 shown on the opposing sides the pivot axis 36 in this way, the effort required to release the connection can be reduced.

[0036] In Figure 5, the pivot shaft 36 is shown to be located in the center of the connecting member 33 shown on the lower side, but one of the column members 32 may also be used to serve as the pivot shaft 36. Furthermore, the connecting part 34 may also be located on a part of the column member 32 other than the column member 32 that serves as the pivot shaft 36. Thus, the specific structure of the connecting part 34, which can be fixed and released, can be modified in various ways.

[0037] Figure 6 is a schematic diagram showing the configuration of a lifting device according to an embodiment of the present invention. Referring to Figure 6, the lifting device 40 according to an embodiment of the present invention comprises a main body 41 including a drive unit, an upper frame 43 surrounding the main body 41, a telescopic rod 42 that extends and retracts vertically, and a lower frame 44 attached to the lower end of the telescopic rod 42. Furthermore, the upper end of the lifting device 40 is provided with a frame connection part 49 for connecting to the vertical truss frame 11 of the scattering prevention curing support 10. The upper frame 43 is provided with an upper fixing part 45 for locking the upper frame 43 to the temporary support column 30, and the lower frame 44 is provided with a lower fixing part 46 for locking the lower frame 44 to the temporary support column 30. The upper fixing part 45 only needs to be provided in a non-extendable part that is above the lower fixing part 46 and does not extend or retract, so it may be provided, for example, on the frame connection part 49.

[0038] The drive unit extends and retracts the telescopic rod 42. There are several types of drive systems, such as hydraulic and electric, but any drive system is acceptable as long as the telescopic rod 42 can be extended and retracted under the required load.

[0039] Since the mechanism for locking the upper fixing part 45 and the lower fixing part 46 to the temporary support column 30 is the same, the method for fixing and releasing the lower fixing part 46 to the temporary support column 30 will be described. The lower fixing part 46 is equipped with a fixing claw pivot shaft 47 and a fixing claw 48, and the fixing claw 48 is configured to rotate within a certain range around the fixing claw pivot shaft 47. When locking to the temporary support column 30, the fixing claw 48 rotates so as to protrude outward from the outer circumference of the lower frame 44, and the recess provided on the outer circumference of the fixing claw 48 engages with the locking structure 35 of the temporary support column 30, thereby fixing the lower frame 44 to the temporary support column 30.

[0040] Conversely, to release the lower fixing part 46 from the temporary support column 30, the upper fixing part 45 is fixed to the temporary support column 30 using the fixing claw 48 in the same manner as above, and the lifting device 40 and the anti-scattering protective support body 10 supported by the lifting device 40 are supported by the upper fixing part 45. Then, the telescopic rod 42 is slightly retracted to raise the lower fixing part 46, so that the recess of the fixing claw 48 is released from the locking structure 35 of the temporary support column 30, and then the fixing claw 48 is rotated to the inner circumference of the lower frame 44. As a result, the lower fixing part 46 is released from the temporary support column 30, and the lower frame 44 can be moved to the next fixing position by operating the telescopic rod 42.

[0041] To release the upper fixing part 45 from the temporary support column 30, the lower fixing part 46 is fixed to the temporary support column 30 so that the lifting device 40 and the anti-scattering protective support body 10 supported by the lifting device 40 are supported by the lower fixing part 46. Then the telescopic rod 42 is extended slightly so that the fixing claw 48 of the upper fixing part 45 is released from the locking structure 35 of the temporary support column 30, and then it is rotated towards the inner circumference of the upper frame 43.

[0042] In this way, the upper fixing part 45 and the lower fixing part 46 can support the lifting device 40 and the scattering prevention curing support 10 on at least one side, and each fixing part can be independently fixed to and released from the temporary support column 30. Therefore, the lifting device 40 and the scattering prevention curing support 10 can be lowered by repeatedly extending the telescopic rod 42 with the upper fixing part 45 fixed to the temporary support column 30, lowering the lower frame 44 and fixing it to the temporary support column 30 with the lower fixing part 46, then releasing the upper fixing part 45, retracting the telescopic rod 42 and lowering the upper frame 43 and fixing it to the temporary support column 30.

[0043] Figure 7 is a diagram showing the stages of the repacking process according to an embodiment of the present invention, illustrating the progression of the work from Figure 7(a) to Figure 7(c). Referring to Figure 7(a), at the initial stage of repositioning, with the upper fixing part 45 of the lifting device 40 fixed to the temporary support column 30, the telescopic rod 42 is extended to lower the lower frame 44 and fix it to the temporary support column 30 by the lower fixing part 46. In this state, the lifting device 40 and the scattering prevention curing support 10 are supported by both the upper fixing part 45 and the lower fixing part 46. However, the lifting device 40 and the scattering prevention curing support 10 can be supported by the lower fixing part 46 alone, so the unit columns 31 above the unit column 31 to which the lower fixing part 46 is fixed can be removed. That is, in Figure 7(a), the lower fixing part 46 is fixed to unit column 31-7, so any of the unit columns 31-1 to 31-6 above it can be removed.

[0044] Referring to Figure 7(b), the uppermost unit column 31-1 is shown with both the upper fixing part 45 and the lower fixing part 46 fixed to the temporary support column 30, and the connecting part 34 of the uppermost unit column 31-1 has been released and removed. If a temporary support column wall tie 37 is attached to the uppermost unit column 31-1, it should be removed at the same time as the unit column 31-1 is removed. The temporary support column wall tie 37 may be reattached to the unit column 31-2 below the removed unit column 31-1.

[0045] While it is possible to remove any of the unit columns 31-2 to 31-6, in this embodiment, a guide mechanism is provided on the temporary support column 30 or the vertical truss frame 11 to guide the scattering prevention curing support 10 within the temporary support column 30 so that it does not wobble. Therefore, unit columns 31 of the length necessary for the guide are left in place.

[0046] Figure 7(b) shows the removal of the uppermost unit column 31-1, but if there is a unit column 31 fixed above with a temporary support wall tie 37, it is also possible to remove a unit column 31 located below it. Similarly, a unit column 31 located between the upper fixing part 45 and the lower fixing part 46 can also be removed. When removing a unit column 31 in the middle in this way, the unit column 31 above the removed unit column 31 is lowered and connected to the unit column 31 below the removed unit column 31.

[0047] Referring to Figure 7(c), the upper fixing part 45 is released from the temporary support column 30, the telescopic rod 42 is retracted, and the upper frame 43 is lowered and fixed to the temporary support column 30 by the upper fixing part 45. As a result, the vertical truss frame 11 fixed to the lifting device 40 also lowers, and the relocation is completed.

[0048] When rearranging the structure, the structure is lowered by the extension stroke of the telescopic rod 42 in one step. Therefore, it is preferable that the extension stroke of the telescopic rod 42 is at least longer than the height of the unit column 31, i.e., the length of the column member 32. This allows the unit column 31 to be removed each time the telescopic rod 42 is extended or retracted.

[0049] Figure 8 is a flowchart illustrating a method for dismantling a structure according to an embodiment of the present invention. Referring to Figure 8, in step S800, temporary support columns 30 are formed by stacking unit columns 31, each equipped with column members 32 erected at the four corners of a square column and connecting members 33 connecting the column members 32 to each other, vertically on the outside of the opposing outer wall 101 of the structure 100 to be demolished. Since the temporary support columns 30 will serve as supports for the debris-preventing protective support 10 which is installed to span the air above the opposing outer wall 101 of the structure 100 to be demolished, they are installed in pairs on either side of the opposing outer wall 101 so as to correspond to the lower end of the debris-preventing protective support 10. In addition, the temporary support columns 30 are formed at predetermined intervals along the outer wall 101. If the temporary support columns 30 are to be formed to a height, they are reinforced by fixing them to the outer wall 101 at multiple locations with temporary support wall ties 37, depending on the height.

[0050] Next, in step S810, a scattering prevention curing support 10 is formed, comprising at least two vertical truss frames 11 that form a pair on the outside of the opposing outer walls 101, and an upper support 12 that spans the upper ends of at least two vertical truss frames 11. At this time, a lifting device 40 is attached to the lower end of each vertical truss frame 11, which is located within the internal space of the temporary support column 30 and supports and raises and lowers the scattering prevention curing support 10 using the temporary support column 30 as a support, thereby forming the scattering prevention curing support 10 so that the vertical truss frames 11 can be raised and lowered within the internal space of the temporary support column 30.

[0051] When multiple temporary support columns 30 are formed along the outer wall 101, multiple vertical truss frames 11 are provided in accordance with the temporary support columns 30. In this case, two adjacent vertical truss frames 11 may be connected with beam members to form a scattering prevention curing support body 10 comprising four vertical truss frames 11.

[0052] Once the debris-preventing curing support 10 is completed, the debris-preventing curing material 20 is used to cover the upper floors of the target structure 100 from above the debris-preventing curing support 10 (stage S820). This, along with the soundproofing panels 25 attached to the outer perimeter of the scaffolding 50 surrounding the outer perimeter of the target structure 100, completes the protection against debris scattering during demolition.

[0053] In stage S830, the top floor of the target structure 100 is demolished. Here, the top floor refers not only to the floor directly below the roof, but to the floor remaining at the top at the time of demolition work. Therefore, as the demolition work progresses, the top floor is gradually replaced by a lower floor. Once the demolition of the top floor is complete, the dust-preventing curing support 10 and dust-preventing curing 20 are moved to the lower floors as follows.

[0054] First, in step S840, with the upper fixing part 45 of the lifting device 40 locked and secured to the temporary support column 30, the telescopic rod 42 is extended, the lower frame 44 is lowered, and the lower fixing part 46 is locked and secured to the temporary support column 30. After the lower fixing part 46 is locked, the unit columns 31 located above the lower fixing part 46 can be removed by releasing the connecting part 34. Therefore, any unit column 31 located above the lower fixing part 46, including the unit column 31 between the lower fixing part 46 and the upper fixing part 45, is removed. In this embodiment, the unit column 31 located at the very top where the temporary support column 30 does not need to be repositioned is removed (step S850).

[0055] Next, in step S860, the telescopic rod 42 is retracted, and the scattering prevention support 10 is lowered together with the main body 41 of the lifting device 40, and the upper fixing part 45 is locked to the temporary support column 30, completing the repositioning. If the height of one floor of the target structure 100 does not match the height of the unit column 31, and it is necessary to remove multiple unit columns 31 during repositioning, steps S840 to S860 are repeated to reposition to the required height.

[0056] When multiple anti-scattering support structures 10 are provided, the anti-scattering support structures 10 may be lowered individually, or all anti-scattering support structures 10 provided on the target structure 100 may be lowered simultaneously in a synchronized manner. Therefore, in this embodiment, a remote control is provided that allows for selective control of the operation of the lifting device 40, such as individually or as a whole, and the operation of the lifting device 40 is controlled by the remote control to perform the rearrangement.

[0057] Finally, at stage S870, it is checked whether demolition has been completed down to the ground floor. If there are still floors that need to be demolished, the process returns to stage S830 and repeats the demolition and rebuilding. If demolition has been completed down to the ground floor, the work is finished.

[0058] The structural demolition method described with reference to Figure 8 is made possible by the structure of the unit columns 31, which can be individually removed by releasing the connecting parts 34 even if the vertical truss frame 11 penetrates the internal space. This makes it possible to provide a scattering prevention protection system 1 that can be rearranged using a simple and inexpensive lifting device 40 such as a jack.

[0059] Although embodiments of the present invention have been described in detail above with reference to the drawings, the present invention is not limited to the embodiments described above, and can be modified in various ways without departing from the technical scope of the present invention. [Explanation of Symbols]

[0060] 1. Splash prevention protection system 10 Shatterproof curing support 11. Vertical Truss Frame 12 Upper support 20 Shatterproof curing body 25 Soundproofing Panels 30 Temporary support posts 31 Unit Pillars 32 Column members 33 Connecting member 34 Connecting part 35 Locking structure 36 rotational axes 37 Temporary support wall ties 40 Lifting device 41 Main unit 42 Telescopic Rods 43 Upper frame 44 Lower frame 45 Upper fixing part 46 Lower fixing part 47 Fixed claw pivot shaft 48 Fixed claw 49 Frame connection section 50 scaffolding 51 Steel cloth plate 52 Scaffolding wall tie 60 Heavy machinery 100 Target Structures 101 Exterior Wall

Claims

1. A scattering prevention support body comprising at least two vertical truss frames and an upper support spanning the upper ends of the at least two vertical truss frames, A scattering prevention curing material covering the upper floors of the target structure from above the aforementioned scattering prevention curing material support, A temporary support structure is formed by stacking unit columns, each comprising column members erected at the four corners of a rectangular column and connecting members connecting the column members, in a vertical direction, so that the internal space allows the vertical truss frame to move up and down. Each of the vertical truss frames has a lifting device attached to its lower end, located within the internal space of the temporary support column, which uses the temporary support column as a support to raise and lower the scattering prevention curing support. The lifting device comprises a main body including a drive unit, a telescopic rod that extends and retracts vertically, and a lower fixing part and an upper fixing part located at the lower end of the telescopic rod and at the non-extendable part above the lower end, respectively, which can be independently fixed to or released from the temporary support column. The scattering prevention protection system is characterized in that each unit column of the temporary support structure is equipped with a connecting part that can be fixed and released, and by releasing the connecting part, the internal space can be divided or unfolded horizontally and individually removed even when the telescopic rod or the vertical truss frame is penetrating it.

2. The scattering prevention protection system according to claim 1, characterized in that column members located at least diagonally opposite the unit column are provided with a locking structure for engaging the upper or lower fixing part of the lifting device.

3. The lifting device supports the scattering prevention support by having at least one of the lower fixing part and the upper fixing part fixed to the temporary support column. The scattering prevention protection system according to claim 1, characterized in that the height of the temporary support column can be reduced by releasing and removing the connecting portion of a unit column located above the unit column to which the lower fixing portion or the upper fixing portion is fixed, while the lower fixing portion or the upper fixing portion is fixed.

4. The scattering prevention protection system according to claim 1, further comprising a remote control for controlling the lifting devices individually or in a synchronized manner to perform lifting and lowering operations.

5. The aforementioned upper support is a truss frame or wire. The scattering prevention protection system according to claim 1, characterized in that, if the upper support is a wire, the wire has a length equal to or greater than the distance between the two vertical truss frames that span the upper end, and the wire is provided with tension-applying means at its end or in the middle for applying a predetermined tension to the wire, thereby preventing excessive bending load from being applied to the two vertical truss frames while being installed with the tension necessary to support the scattering prevention protection material.

6. The process involves stacking unit columns, each comprising a column member erected at the four corners of a rectangular prism and connecting members that connect the column members, in a vertical direction to form a temporary support column. The process involves forming a support structure for a scattering prevention material that covers the upper part of a target structure, comprising at least two vertical truss frames and an upper support spanning the upper ends of the at least two vertical truss frames, and lifting devices attached to the lower ends of each of the vertical truss frames, such that the vertical truss frames can be raised and lowered within the internal space of the temporary support column. The steps include covering the upper floors of the target structure with the scattering prevention curing material from above the scattering prevention curing material support, The stage of demolishing the top floor of the aforementioned structure, The process includes the step of replacing the aforementioned scattering prevention curing support and scattering prevention curing with a lower layer, The lifting device comprises a main body including a drive unit, a telescopic rod that extends and retracts vertically, and a lower fixing part and an upper fixing part located at the lower end of the telescopic rod and at the non-extendable part above the lower end, respectively, which can be independently fixed to or released from the temporary support column. Each unit column of the temporary support structure is equipped with a connecting part that can be fixed and released, and by releasing the connecting part, it is formed to be divided or unfolded horizontally and individually removable. The step of replacing the aforementioned scattering prevention curing support and scattering prevention curing with a lower layer is as follows: With the upper fixing portion of the lifting device locked to the temporary support column, the telescopic rod is extended and the lower fixing portion is locked to the temporary support column. The steps include: releasing the connecting portion of the unit column located between the upper fixing portion and the lower fixing portion, or the connecting portion of the unit column located above the upper fixing portion, and removing the unit column; A method for dismantling a structure, characterized by including the step of shortening the telescopic rod to lower the scattering prevention support material.

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