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

Abstract

This invention provides a scaffolding-based protective system that can be easily reconfigured to prevent debris scattering. [Solution] The scattering prevention protection system according to the present invention comprises a scattering prevention protection support body comprising a vertical truss frame and an upper support body, a scattering prevention protection body covering the upper floors of the target structure from above the scattering prevention protection support body, a movable base support column formed in an internal space in which the vertical truss frame can move up and down, a lifting device attached to the lower end of the vertical truss frame and a relative movement of the vertical truss frame and the movable base support column to raise and lower the scattering prevention protection support body, scaffolding surrounding the outer wall of the target structure, and a hairpin member that supports the vertical truss frame or the movable base support column using the scaffolding as a support body, characterized in that when lowering the scattering prevention protection support body, the scattering prevention protection support body is lowered by the lifting device using the movable base support column, which has been lowered first and fixed by the hairpin member, as a support body.

Description

Technical Field

[0001] The present invention relates to a splash-preventing curing system and a method for demolishing a structure using the same. In particular, a lifting device is provided at the lower end of a vertical truss frame of a splash-preventing curing body support, and a movable base column is attached to the lifting device and surrounds the outer periphery of the vertical truss frame and is movable relative to the vertical truss frame. The present invention relates to a splash-preventing curing system that can be easily replaced with a scaffold as a support and a method for demolishing a structure using the same.

Background Art

[0002] High-rise buildings that have been constructed 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-preventing curing body such as a sheet or a net to prevent the scattering of fragments 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 proceeding with the demolition in order from the upper floor. Along with this, the demolition of the scaffold constructed around the outer wall of the demolished upper floor and the removal of the splash-preventing curing body are carried out. However, since the splash-preventing 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 method is used in which a structure such as a truss that supports the protective covering is erected 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] Patent Document 2 discloses a scattering prevention curing system comprising a scattering prevention curing support body comprising at least one pair of vertical support structures formed by stacking multiple basic structures vertically, and an upper support body spanning the top of the at least one pair of vertical support structures; a scattering prevention curing body covering the top of a target structure; and a suspension means for temporarily suspending at least a portion of the scattering prevention curing support body from the top up to a predetermined height.

[0007] According to the invention described in Patent Document 2, when lowering the scattering prevention curing material during repositioning, the portion of the vertical support structure from the middle height upwards is supported by a suspension means, and a portion of the vertical support structure below the suspension part is removed and lowered, thus eliminating the need to install multiple construction elevators, which are costly as described in Patent Document 1. However, when lowering the scattering prevention curing material support as a whole during repositioning, a suspension means such as a crane is required to suspend the entire scattering prevention curing material support, which is costly, although not as expensive as installing multiple elevators, and requires time and effort to prepare the suspension means such as a crane at the necessary height to suspend the scattering prevention curing material support beforehand.

[0008] Therefore, there is a need for a relatively lightweight, easy-to-install dust-prevention protection system and a method for demolishing structures using the same, which can be easily lowered and repositioned as the demolition work progresses. [Prior art documents] [Patent Documents]

[0009] [Patent Document 1] Japanese Patent Publication No. 2019-167813 [Patent Document 2] Japanese Patent Publication No. 2022-180878 [Overview of the project] [Problems that the invention aims to solve]

[0010] The present invention has been made in view of the problems in the above-mentioned conventional scattering prevention protection systems, and the object of the present invention is to provide a scattering prevention protection system that can be easily rearranged using scaffolding as a support, and a method for dismantling a structure using the same, by providing a lifting device at the lower end of the vertical truss frame of the scattering prevention protection support body and a movable base support attached to the lifting device that surrounds the outer circumference of the vertical truss frame and is movable relative to the vertical truss frame. [Means for solving the problem]

[0011] To achieve the above objective, the present invention provides a scattering prevention curing system comprising: a scattering prevention curing 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 curing body covering the upper floors of the target structure from above the scattering prevention curing support body; a movable base support column of a predetermined length surrounding the outer periphery of the vertical truss frames and forming an internal space that allows the vertical truss frames to move up and down; and the movable base support column attached to the lower ends of each of the vertical truss frames. The structure comprises a lifting device located within the internal space of a column, which moves the vertical truss frame and the movable base support relative to each other to raise and lower the scattering prevention curing support; scaffolding provided to surround the outer wall of the target structure; and a hairpin member that supports the vertical truss frame or the movable base support using the scaffolding as a support. When lowering the scattering prevention curing support, the lifting device lowers the scattering prevention curing support using the movable base support, which has been lowered first and fixed by the hairpin member, as a support.

[0012] The lifting device comprises a main body including a drive unit, a telescopic rod that extends and retracts vertically from the drive unit, and a lower fixing part located near the tip of the telescopic rod that can be fixed to the movable base support column. When rearranging, it is preferable to move the vertical truss frame and the movable base support column relative to each other by extending and retracting the telescopic rod. Preferably, the aforementioned target structure is used as a support to fix the scattering prevention curing support, and a connecting member is provided to receive horizontal external forces applied to the scattering prevention curing support.

[0013] A structural demolition method according to the present invention, made to achieve the above objective, is a structural demolition method using a scattering prevention curing system, comprising the steps of: setting up scaffolding around the outer perimeter of a target structure; supporting a scattering prevention curing body support comprising at least two vertical truss frames and an upper support spanning the upper ends of the at least two vertical truss frames, and supporting a scattering prevention curing body covering the upper part of the target structure; lifting devices attached to the lower ends of each of the vertical truss frames; and a movable base support of a predetermined length fixed to the lifting device, surrounding the outer perimeter of the vertical truss frames and forming an internal space that allows the vertical truss frames to move up and down, by engaging a first hairpin member, which uses the scaffolding as a support, with the movable base support; and the scattering prevention curing system. The method comprises the steps of: covering the upper floors of the target structure with a scattering prevention curing material from above the scattering prevention curing material support; dismantling the top floor of the target structure; and moving the scattering prevention curing material support and scattering prevention curing material to the lower floors, wherein the step of moving the scattering prevention curing material support and scattering prevention curing material to the lower floors includes the steps of: temporarily supporting the vertical truss frame with a second hairpin member that uses the scaffolding as a support and releasing the support of the first hairpin member; lowering the movable base column with the lifting device and then supporting the movable base column again with the first hairpin member that uses the scaffolding as a support and releasing the second hairpin member; and lowering the vertical truss frame using the movable base column as a support.

[0014] It is preferable that, after setting up the scaffolding and supporting the scattering prevention curing support with the hairpin member, or after the step of transferring the scattering prevention curing support and scattering prevention curing to the lower layer, the scattering prevention curing support is further fixed using the target structure as a support and connecting members that receive the horizontal external force applied to the scattering prevention curing support. [Effects of the Invention]

[0015] According to the scattering prevention protection system and structural demolition method using the same, a lifting means comprising a lifting device, a movable base support fixed to the lifting device and surrounding the outer circumference of the vertical truss frame of the scattering prevention protection support, and movable relative to the vertical truss frame, and a hairpin member that supports the vertical truss frame or the movable base support, is combined to repeatedly perform lifting and lowering operations within the movable range of the lifting device to proceed with the repositioning. Therefore, there is no need to install long rails extending in the height direction of the target structure, as in a construction elevator, and a simple device such as a jack can be used as the lifting device. As a result, construction costs are reduced, and there is no need for lifting means such as a tall crane to temporarily suspend the scattering prevention protection support.

[0016] Since the lifting and lowering mechanisms are individually provided on the vertical truss frames of the protective support structures to prevent scattering, the protective support structures to prevent scattering can be replaced partially by selecting specific vertical truss frames depending on the demolition work, or they can be replaced simultaneously on all vertical truss frames.

[0017] Furthermore, according to the debris-prevention protection system and the structural demolition method using the same, the vertical truss frame of the debris-prevention protection support can be fixed with connecting members that receive the horizontal external forces applied to the vertical truss frame using the target structure as a support. In this case, the vertical truss frame only needs to be able to support the remaining vertical load. Since the vertical load can also be supported by scaffolding, there is no need to separately provide support columns for the debris-prevention protection support. [Brief explanation of the drawing]

[0018] [Figure 1] This figure schematically shows the overall structure of a scattering prevention protection system according to an embodiment of the present invention. [Figure 2] This figure shows an example configuration of a lifting device and a movable base support column for a scattering prevention protection system according to an embodiment of the present invention. [Figure 3]It is a diagram schematically showing a planar structure including a movable base support column and a vertical truss according to an embodiment of the present invention. [Figure 4] It is a diagram showing step by step the state during replacement according to an embodiment of the present invention. [Figure 5] It is a diagram showing step by step the state during replacement according to an embodiment of the present invention. [Figure 6] It is a diagram showing step by step the state during replacement 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 diagram showing step by step the state during replacement according to an embodiment of the present invention. [Figure 9] It is a flowchart for explaining a method for disassembling a structure according to an embodiment of the present invention.

Mode for Carrying Out the Invention

[0019] Next, a specific example of a form for implementing a scattering prevention curing system according to the present invention and a method for disassembling a structure using the same will be described in detail while referring to the drawings. FIG. 1 is a diagram schematically showing the overall configuration of a scattering prevention curing system according to an embodiment of the present invention. FIG. 1(a) is a view seen from the front side of the structure to be disassembled, and FIG. 1(b) is a view seen from the side of FIG. 1(a). FIG. 1(b) shows a cutout of a part of the overall width.

[0020] Referring to Figures 1(a) and 1(b), the scattering prevention protection system 1 according to an embodiment of the present invention comprises a scattering prevention protection support body 10 comprising at least two vertical truss frames 11 provided along two opposing outer walls 81 of the structure 80 to be demolished, such as the front and back or the left and right sides, and an upper support body 12 spanning the upper ends of at least two vertical truss frames 11, and a scattering prevention protection body 20 covering the upper floors of the structure 80 from above the scattering prevention protection support body 10, The structure includes a lifting device 30 attached to the lower end of each vertical truss frame 11 for raising and lowering the scattering prevention curing support 10, a movable base column 40 of a predetermined length that surrounds the outer periphery of the lifting device 30 and the vertical truss frame 11 and forms an internal space that allows the vertical truss frame 11 to move up and down, a scaffolding 50 provided to surround the outer wall 81 of the target structure 80, and a hairpin member 60 that supports the vertical truss frame 11 or the movable base column 40 using the scaffolding 50 as a support. Soundproof panels 25 are attached to the outer periphery of the scaffolding 50. Note that in Figure 1, the soundproof panel 25 on the front side of the target structure 80 is omitted in order to make the scaffolding 50 easier to see.

[0021] The scattering prevention protection system 1 according to an embodiment of the present invention is a scattering prevention protection system 1 that is applied to a structural demolition method in which heavy machinery for demolition is lifted to the top floor of the structure 80 to be demolished to secure working space for the heavy machinery while proceeding with the demolition of the structure 80. In order to secure space for the heavy machinery to move freely, the scattering prevention protection support body 10 supports the scattering prevention protection body 20 at a height that is sufficiently higher than the height of the top of the scaffolding 50. Demolition proceeds sequentially from the top floor to the lower floors, and in accordance with this, the heavy machinery is also sequentially lowered to the lower floors to proceed with the demolition.

[0022] When demolishing the target structure 80, it is necessary to cover the perimeter and top of the target structure 80 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 80 with a scattering prevention covering material 20 such as a net. As the demolition of the target structure 80 progresses, the height of the target structure 80 decreases, so it is desirable to reduce the height of the scattering prevention covering material 20 accordingly.

[0023] Regarding the surrounding area, the scaffolding 50 and soundproof panels 25 can be removed sequentially as the target structure 80 is dismantled from the upper floors. However, the dust-preventing protective covering 20 covering the top of the target structure 80 will need to be lowered sequentially in accordance with the dismantling of the target structure 80.

[0024] The scattering prevention protection system 1 according to an embodiment of the present invention includes a lifting device 30 attached to the lower end of the vertical truss frame 11 of the scattering prevention protection material support body 10, and a movable base column 40 that can move relative to the vertical truss frame 11 in combination with the lifting device 30. By sequentially switching the support point of the hairpin member 60 between the vertical truss frame 11 and the movable base column 40 as the movable base column 40 moves relative to the vertical truss frame 11 using the lifting device 30, the scattering prevention protection material 20 can be lowered together with the scattering prevention protection material support body 10. Since a simple and inexpensive lifting device 30 such as a jack can be used as the lifting device 30, there is no need for expensive and time-consuming equipment such as construction elevators or large cranes to lower the scattering prevention protection material 20.

[0025] The scattering prevention support structure 10 may, as its minimum unit structure, be configured in a U-shape with two vertical truss frames 11 provided along two opposing outer walls 81 and one upper support 12 spanning the upper ends of the two vertical truss frames 11. However, as shown in Figure 1, it is preferable to use a unit structure that combines four vertical truss frames 11 (two pairs) provided along two opposing outer walls 81 and four upper support 12 spanning the upper ends of adjacent vertical truss frames 11 to form a three-dimensional shape, as this results in a more stable shape. In Figure 1, the scattering prevention support structure 10 is shown as a single unit of four vertical truss frames 11, but the number of vertical truss frames 11 constituting the scattering prevention support structure 10 is not limited to this. Depending on the size and shape of the target structure 80, it may be composed of even more vertical truss frames 11, or multiple scattering prevention support structures 10 of the unit structure may be installed.

[0026] Each vertical truss frame 11 of the scattering prevention curing support 10 is fitted with a lifting device 30 at its lower end. However, if there is a misalignment in the lifting and lowering movements of each lifting device 30 during repositioning, the scattering prevention curing support 10 may tilt and become unstable. Therefore, in this embodiment, a remote control is further provided to control the lifting and lowering movements of the multiple lifting devices 30 provided on the unit structure of the scattering prevention curing support 10 in a synchronized manner.

[0027] In Figure 1, the upper support 12 is shown as a straight truss frame with a flat top, but a V-shaped truss frame is also acceptable. 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.

[0028] Figure 2 shows an example of the configuration of the lifting device and movable base support column of a scattering prevention protective system according to an embodiment of the present invention. Referring to Figure 2, the lifting device 30 according to an embodiment of the present invention comprises a main body 31 including a drive unit, an upper frame 33 surrounding the main body 31, a telescopic rod 32 that extends and retracts vertically, and a lower frame 34 attached to the lower end of the telescopic rod 32. Furthermore, the upper end of the lifting device 30 is provided with a frame connection part 37 for connecting to the vertical truss frame 11 of the scattering prevention curing support 10. The lower frame 34 is also provided with a lower fixing part 35 including a fixing hook 36 for holding the movable base column 40. The fixing hook 36 is formed to be switchable between a state where it is stored in the lower fixing part 35 by rotation and a state where it extends to hold the movable base column 40. The drive unit extends and retracts the telescopic rod 32. There are several types of drive systems, such as hydraulic and electric, but any drive system is acceptable as long as the telescopic rod 32 can be extended and retracted under the required load.

[0029] The movable base support column 40 has an overall rectangular prism shape and includes column members 41 located at the four corners of the rectangular prism, connecting members 42 that connect the column members 41 to each other, connecting parts 43 that are located in two opposing directions of the rectangular prism and connect the connecting members 42 in a divisible manner, and locking structures 44 provided on two diagonally opposite column members 41 of the four corner column members 41. The movable base support column 40 is preferably constructed by stacking column members 41 of unit length in the longitudinal direction to reach a predetermined length, so that it is easy to handle and its length can be adjusted.

[0030] The lower end of the vertical truss frame 11 and the lifting device 30 attached to the lower end are inserted into the internal space of the movable base column 40. There are no particular restrictions on how the lifting device 30 and the movable base column 40 are combined. Alternatively, the lower end of the vertical truss frame 11 and the lifting device 30 attached to the lower end may be prepared first, and then the two halves of the movable base column 40 may be connected using the connecting portion 43 of the movable base column 40 to surround the lower end of the vertical truss frame 11 and the lifting device 30, thereby realizing the combined structure.

[0031] After combining the lifting device 30 and the movable base column 40, the fixing hook 36 of the lifting device 30 is locked to the locking structure 44 of the movable base column 40, thereby attaching the movable base column 40 to the lifting device 30. As a result, when the telescopic rod 32 of the lifting device 30 is extended or retracted, the movable base column 40 can move relative to the vertical truss frame 11 in conjunction with this movement.

[0032] Therefore, by using a first hairpin member 60 that supports the movable base column 40 and a second hairpin member 60 that supports the vertical truss frame 11, the vertical truss frame 11 is supported by the second hairpin member 60 which uses the scaffolding 50 as a support, and the telescopic rod 32 is extended to lower the movable base column 40. Then, the movable base column 40 is supported by the first hairpin member 60 which uses the scaffolding 50 as a support, and the second hairpin member 60 is removed and the telescopic rod 32 is retracted, thereby lowering the vertical truss frame 11. This rearrangement operation will be described later with reference to Figures 4 to 8.

[0033] In one embodiment, the lifting device 30 has a total length of approximately 3m, the stroke of the telescopic rod 32 is approximately 1.2m, and the total length of the movable base column 40 is approximately 5m. By making the total length of the movable base column 40 longer than the sum of the total length of the lifting device 30 and the stroke of the telescopic rod 32, the lower end of the vertical truss frame 11 can remain within the internal space of the movable base column 40 even when the movable base column 40 is lowered to its maximum extent. This relationship is effective when a guide member, such as a guide roller, is installed on the upper end side of the movable base column 40 to guide the relative movement with the vertical truss frame 11. That is, the vertical truss frame 11 can always be guided by the guide member during relative movement. The specific dimensions exemplified here are just one example, and as long as the above-mentioned length relationship can be maintained, they may be appropriately changed depending on the size and shape of the target structure 80.

[0034] Figure 3 is a schematic diagram showing a planar structure including a movable base support and a vertical truss according to an embodiment of the present invention. Referring to Figure 3, a vertical truss frame 11 is arranged vertically along the outer wall 81 of the target structure 80, and movable base columns 40 are provided to surround the vertical truss frame 11. Scaffolding 50 is installed along the outer wall 81, but avoiding the movable base columns 40.

[0035] In the embodiment of the present invention, the scaffolding 50 is provided so that scaffolding of a certain width is positioned close to the movable base support 40 in both the left and right directions toward the outer wall 81. This is because, when lowering the scattering prevention curing support 10, the hairpin members 60 that support the vertical truss frame 11 or the movable base support 40 are installed by being stretched between the scaffolding 50 positioned close to each other in both the left and right directions.

[0036] The vertical load on the debris-preventing support structure 10 is supported by the pin members 60 installed across the scaffolding 50, but the debris-preventing support structure 10 may also be subjected to horizontal loads due to the effects of wind, etc. The pin members 60 may not be able to adequately support these horizontal loads. Therefore, in this embodiment, a connecting member 70 is installed between the outer wall 81 of the target structure 80 and the vertical truss frame 11, and the connecting member 70 primarily supports the horizontal loads. Since the horizontal load on the debris-preventing support structure 10 acts as a moment that could cause it to tip over, it is preferable to install the connecting member 70 on the outer wall 81 of the upper floor of the target structure 80, away from the pin members 60 which serve as support points.

[0037] If the movable base column 40 is long and, when supported by the scaffolding 50 and the pin member 60, the upper end of the movable base column 40 is at a height equal to or greater than the top floor of the target structure 80, it is difficult to install the connecting member 70 between the outer wall 81 and the vertical truss frame 11. In such cases, a guide member that restricts the horizontal movement of the vertical truss frame 11 may be provided at the upper end of the movable base column 40, and then the connecting member 70 may be installed between the outer wall 81 and the movable base column 40 to indirectly restrict the horizontal movement of the vertical truss frame 11 by preventing the horizontal movement of the movable base column 40.

[0038] Since the vertical truss frame 11 is located in the internal space of the movable base column 40, the constraints on the thickness and installation position of the support member 60 are greater when supporting the vertical truss frame 11 compared to when supporting the movable base column 40. The vertical truss frame 11 is supported by the support member 60 for a short period during the intermediate stages of the reconstruction, and while the top floor of the target structure 80 is being demolished, the scattering prevention curing support body 10 will be supported by the support member 60 that supports the movable base column 40. Therefore, in one embodiment, two types of support members 60 are used: a second support member 60 for supporting the vertical truss frame 11, and a first support member 60 that is thicker or wider when viewed from above than the second support member 60 for supporting the movable base column 40.

[0039] Figures 4 to 8 are diagrams showing the stages of the repacking process according to an embodiment of the present invention. First, referring to Figure 4, the lifting device 30 attached to the lower end of the vertical truss frame 11 of the scattering prevention curing support body 10 is shown with the telescopic rod 32 in a retracted state, with the movable base column 40 fixed to the lower fixing part 35 on the tip side of the telescopic rod 32, and further shown with the movable base column 40 supported by the first hairpin member 60-1 which has the scaffolding 50 as its support.

[0040] The state shown in Figure 4 is the configuration adopted when the top floor of the target structure 80 is being demolished, and represents the basic state other than when it is being rebuilt. Although not shown in the figure, in this embodiment, the vertical truss frame 11, which is exposed above the movable base support column 40, is connected to the target structure 80 by a connecting member 70, and the vertical truss frame 11 is supported so as not to be subjected to excessive load in the horizontal direction. Once the demolition of the top floor of the target structure 80 is completed in the support state shown in Figure 4, the protective support 10 for preventing scattering is lowered and repositioned in order to demolish the lower floor which will become the new top floor.

[0041] Referring to Figure 5, as the first step in the repositioning, the second hairpin member 60-2 is inserted through the vertical truss frame 11 that is exposed above the movable base column 40, and the vertical truss frame 11 is supported by the second hairpin member 60-2 which uses the scaffolding 50 as a support. Then, the first hairpin member 60-1 which supports the movable base column 40 is pulled out to release the support for the movable base column 40. In order to perform this repositioning of the hairpin members 60 (60-1, 60-2), the telescopic rod 32 is left in a state where it can be further retracted even in the state shown in Figure 4, and by slightly retracting the telescopic rod 32 after inserting the second hairpin member 60-2, the support point of the scattering prevention curing support 10 can be easily shifted from the movable base column 40 to the vertical truss frame 11.

[0042] Next, as shown in Figure 6, the second step is to extend the telescopic rod 32 to lower the movable base support column 40. At this time, the telescopic rod 32 is not extended to its maximum stroke, but is extended to a distance that leaves further extension possible.

[0043] In the third stage, as shown in Figure 7, the first hairpin member 60-1, which uses the scaffolding 50 as its support, is installed on the lowered movable base column 40 to support the movable base column 40. Then, the second hairpin member 60-2, which supports the vertical truss frame 11, is pulled out to release the support for the vertical truss frame 11. At this time, too, by slightly extending the telescopic rod 32 while the first hairpin member 60-1 is installed, the support point of the scattering prevention curing support 10 can be easily moved from the vertical truss frame 11 to the movable base column 40. If a connecting member 70 is installed between the outer wall 81 of the target structure 80 and the vertical truss frame 11, the connection between the vertical truss frame 11 and the connecting member 70 should be released before slightly extending the telescopic rod 32 to easily move the support point of the scattering prevention curing support 10 from the vertical truss frame 11 to the movable base column 40.

[0044] Finally, as shown in Figure 8, in the fourth stage, the telescopic rod 32 is retracted to lower the vertical truss frame 11, thereby lowering the scattering prevention curing support 10 and the scattering prevention curing 20 covering its upper part.

[0045] When using a jack as shown in Figure 2 as the lifting device 30, the distance the vertical truss frame 11 can be lowered at one time is limited by the stroke of the telescopic rod 32. The stroke of the telescopic rod 32 of the lifting device 30 used in this embodiment is relatively short, for example, 1.2 m, as mentioned above. Therefore, the repositioning procedure shown in Figures 4 to 8 is repeated, and after lowering the required distance is completed, the connecting member 70 is installed again between the outer wall 81 and the vertical truss frame 11 to support the horizontal load.

[0046] The hairpin member 60 is used to support the movable base column 40 or vertical truss frame 11 by being supported by the scaffolding 50. If the distance that can be lowered at once by the telescopic rod 32 matches the pitch in the height direction of the scaffolding 50, and if the pitch of the repeating structure in the height direction of the movable base column 40 or vertical truss frame 11 matches the distance that can be lowered at once by the telescopic rod 32, then the hairpin member 60 can be installed at a fixed position on the scaffolding 50, for example on the steel plank 51, to support the movable base column 40 or vertical truss frame 11 at a support position with the same positional relationship before and after lowering. However, generally, the distance that can be lowered at once by the telescopic rod 32 does not match the pitch in the height direction of the scaffolding 50. Also, the distance that can be lowered at once by the telescopic rod 32 does not necessarily match the pitch of the repeating structure in the height direction of the movable base column 40 or vertical truss frame 11.

[0047] In one embodiment, the movable base column 40 and the vertical truss frame 11 are provided with height-adjustable support seats for hairpin members 60 of various heights so that they can be used as support points. The support seat for hairpin members can be realized as a structure that combines, for example, a support seat body having a recess that matches the shape of the hairpin member 60, and a mounting part that allows the support seat body to be adjusted in the height direction by screws or the like on the movable base column 40 and the vertical truss frame 11.

[0048] In another embodiment, the hair ornament member 60 is provided with a mounting base that allows for height adjustment of the hair ornament member 60. When installing the hair ornament member 60 on the scaffolding 50, the height of the hair ornament member 60 is adjusted using the mounting base so that it is positioned on a fixed location on the movable base column 40 or vertical truss frame 11 before installation. In this case, if the hair ornament member 60 is received at the intersection of the column members and connecting members of the movable base column 40 or vertical truss frame 11, a receiving seat for the hair ornament member 60 is not necessary on the movable base column 40 or vertical truss frame 11. However, a receiving seat with a recess that matches the shape of the hair ornament member 60 may be provided on the movable base column 40 or vertical truss frame 11.

[0049] Figure 9 is a flowchart illustrating a method for dismantling a structure according to an embodiment of the present invention. Referring to Figure 9, in step S900, scaffolding 50 is installed around the outer perimeter of the target structure 80. The scaffolding 50 is installed along the outer wall 81 of the target structure 80, but the area where the vertical truss frame 11 of the scattering prevention curing support 10 is to be installed is left open in advance to allow space for the rectangular movable base support 40 to move up and down. For this reason, as shown in Figure 3, the width of the outer scaffolding 50 is narrow in the area where the vertical truss frame 11 is to be installed. Depending on the embodiment, this narrow outer portion of the scaffolding 50 may be attached after the vertical truss frame 11 has been installed.

[0050] In step S910, a scattering prevention curing support body 10 is provided, comprising at least two vertical truss frames 11 forming a pair on the outside of the opposing outer wall 81, and an upper support body 12 spanning the upper ends of at least two vertical truss frames 11; a lifting device 30 is attached to the lower end of each of the vertical truss frames 11; and a movable base support column 40 of a predetermined length is fixed to the lifting device 30, surrounds the outer periphery of the vertical truss frames 11, and forms an internal space that allows the vertical truss frames 11 to move up and down. The first hairpin member 60-1, which uses the scaffolding 50 as a support, is engaged with the movable base support column 40. Immediately after step S910, there may be a further step of fixing the scattering prevention curing support body 10 with a connecting member 70 that receives horizontal external forces applied to the scattering prevention curing support body 10, using the target structure 80 as a support.

[0051] Next, in step S920, the upper floors of the target structure 80 are covered with the scattering prevention curing material 20 from above the scattering prevention curing material support 10, and then in step S930, the top floor of the target structure 80 is demolished. The vertical truss frame 11 of the scattering prevention curing material support 10 according to the embodiment of the present invention can be made to a sufficient height so as not to restrict the range of motion of heavy machinery even when demolition work is carried out using heavy machinery, so the demolition of the top floor of the target structure 80 is carried out using heavy machinery.

[0052] Once the demolition of the top floor of the target structure 80 is complete, heavy machinery is lowered to the lower floor to demolish the layer immediately below which will become the new top floor, and at the same time, the protective support 10 for preventing scattering is lowered and repositioned.

[0053] In the reassembly stage, first, in stage S940, the vertical truss frame 11 is temporarily supported by the second hairpin member 60-2, which uses the scaffolding 50 as a support. With the installation of the second hairpin member 60-2, the second hairpin member 60-2 and the first hairpin member 60-1 engaged with the movable base column 40 temporarily coexist. However, after the installation of the second hairpin member 60-2, the main supporting element can be shifted from the first hairpin member 60-1 to the second hairpin member 60-2 by slightly shortening the telescopic frame 32 of the lifting device 30. After the main supporting element has been shifted to the second hairpin member 60-2, the first hairpin member 60-1 is pulled out to release the support of the movable base column 40.

[0054] Next, in stage S950, the movable base column 40 is lowered by the lifting device 30, and then the movable base column 40 is supported again by the first hairpin member 60-1 which uses the scaffolding 50 as a support, thereby releasing the support of the vertical truss frame 11 by the second hairpin member 60-2.

[0055] At the end of the rearrangement process, in step S960, the rearrangement of the anti-scattering curing support 10 and the anti-scattering curing material 20 is completed by lowering the vertical truss frame 11 using the movable base support 40 as a support. Immediately after this, there may be a further step in which the anti-scattering curing support 10 is fixed using the target structure 80 as a support by connecting members 70 that receive the horizontal external forces applied to the anti-scattering curing support 10.

[0056] Although not shown in the diagram, if the required height cannot be achieved in a single repositioning, the connecting member 70 is not used to fix the structure after each repositioning step as described above. Instead, steps S940 to S960 are repeated to lower the anti-scattering curing support 10 and the anti-scattering curing material 20 to the target height. Once the descent to the target height is complete, the target structure 80 is used as a support, and the anti-scattering curing support 10 is fixed by the connecting member 70, which receives the horizontal external force applied to the anti-scattering curing support 10.

[0057] The demolition of the target structure 80 is completed when the demolition process from stage S930 to stage S960 is repeated and the completion of the demolition down to the ground floor is confirmed in stage S970.

[0058] 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]

[0059] 1. Splash prevention protection system 10 Shatterproof curing support 11. Vertical Truss Frame 12 Upper support 20 Shatterproof curing body 25 Soundproofing Panels 30 Lifting device 31 Main unit 32 Telescopic Rods 33 Upper frame 34 Lower frame 35 Lower fixing part 36 Fixing hooks 37 Frame connection section 40 Movable base support 41 Column members 42 Connecting member 43 Connecting part 44 Locking structure 50 scaffolding 51 Steel cloth plate 60 Hairpin components 60-1 First hair ornament component 60-2 Second hairpin component 70 Connecting Members 80 Target Structures 81 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 movable base support column of a predetermined length surrounds the outer periphery of the vertical truss frame and forms an internal space that allows the vertical truss frame to move up and down, A lifting device is attached to the lower end of each of the vertical truss frames and located within the internal space of the movable base support column, which moves the vertical truss frame and the movable base support column relative to each other to raise and lower the scattering prevention support for the living organism, A scaffolding is erected to surround the outer wall of the aforementioned target structure, The scaffolding has a support structure and a hairpin member that supports the vertical truss frame or the movable base column, A scattering prevention curing system characterized in that, when lowering the scattering prevention curing support, the movable base support, which has been lowered first and fixed by the hairpin member, is used as a support, and the scattering prevention curing support is lowered by the lifting device.

2. The lifting device comprises a main body including a drive unit, a telescopic rod that extends and retracts vertically from the drive unit, and a lower fixing part located near the tip of the telescopic rod that can be fixed to the movable base support column. The scattering prevention protection system according to claim 1, characterized in that when rearranging, the vertical truss frame and the movable base support are moved relative to each other by extending or retracting the telescopic rod.

3. The scattering prevention curing system according to claim 1, further comprising a connecting member that fixes the scattering prevention curing support to the aforementioned target structure as a support, and that receives horizontal external forces applied to the scattering prevention curing support.

4. A method for demolishing a structure using a scattering prevention protection system, The stage of installing scaffolding around the perimeter of the target structure, A scattering prevention curing support comprising at least two vertical truss frames, an upper support spanning the upper ends of the at least two vertical truss frames, a scattering prevention curing support supporting a scattering prevention curing material covering the upper part of the target structure, a lifting device attached to the lower end of each of the vertical truss frames, and a movable base support of a predetermined length fixed to the lifting device, surrounding the outer periphery of the vertical truss frames and forming an internal space that allows the vertical truss frames to move up and down, a step of supporting the first hairpin member, which uses the scaffolding as a support, by engaging it with the movable base support, 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 step of replacing the aforementioned scattering prevention curing support and scattering prevention curing with a lower layer is as follows: The steps include temporarily supporting the vertical truss frame with a second hairpin member that uses the scaffolding as a support, and releasing the support from the first hairpin member, The steps include lowering the movable base column using the lifting device, then supporting the movable base column again with the first hairpin member that uses the scaffolding as a support, and releasing the second hairpin member, A method for dismantling a structure, characterized by including the step of lowering the vertical truss frame using the movable base support as a support.

5. The method for dismantling a structure according to claim 4, further comprising the step of fixing the support structure for preventing scattering of cured organisms with a connecting member that receives horizontal external forces applied to the support structure for preventing scattering of cured organisms, using the target structure as a support, after setting up the scaffolding and supporting the support structure for preventing scattering of cured organisms with the hairpin member, or after the step of moving the support structure for preventing scattering of cured organisms and the support structure for preventing scattering of cured organisms to the lower layer.

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