JP2021127565A - Method for preventing scattering of existing building - Google Patents

Abstract

To prevent parts of an existing building from being scattered by easily covering the existing building at a low cost in a safe state.SOLUTION: A part or the whole of the existing building 1 installed on the ground, including the roof part, is covered with a cover sheet 2 of a heat-shrinkable sheet 13, which is heat-shrinked and adheres to the building to cover the existing building 1 under pressure from the outside to prevent parts from scattering from the existing building 1.SELECTED DRAWING: Figure 4

Description

The present invention relates to a method for preventing scattering of an existing building installed on the ground to prevent parts from being scattered around due to a strong wind, an earthquake, or the like.

Existing buildings that are dilapidated and not repaired or demolished may have parts scattered around due to natural disasters such as typhoons, gusts, snowstorms, or earthquakes. Parts such as roof tiles and galvanized iron plates scattered from the building not only damage the building, but may cause a dangerous accident if it hits a pedestrian or the like. For this reason, existing buildings that are aging and not repaired need to be demolished promptly, but the reality is that not all existing buildings of this type are demolished promptly. In particular, during the typhoon season, it is desirable to dismantle a large number of existing buildings at one time. No method has been developed to renovate the building, and the reality is that many dilapidated existing buildings are left in a dangerous state.

On the other hand, although it is not an existing building fixed to the ground, packing sheets and packing covers for transporting building units have been developed. (See Patent Documents 1 and 2)

Japanese Unexamined Patent Publication No. 10-196127 Japanese Unexamined Patent Publication No. 4-120373

The publication of Patent Document 1 discloses a packing sheet of a building unit in which the size and the like can be easily and quickly confirmed by the identification color in a folded state, and the identification color does not spoil the aesthetic appearance when used. This packing sheet is put on the outer surface of the building unit when the building unit is stored or transported, and after use, it is folded and collected, and is used repeatedly. The publication of Patent Document 2 is a packing cover composed of an upper surface covering portion and each side surface covering portion covering the upper surface and each side surface of the building unit, the upper surface covering portion is made of a transparent or translucent material, and adjacent side surface covering portions are used. It has a structure that can be separated from each other and can be connected with a fastener.
The above packing sheet is for packing building units for storage and transportation, and it is not possible to pack existing buildings that are fixed to the ground, much less parts are scattered around from aging existing buildings. It is not something that can be suppressed.

The present invention has been developed for the purpose of preventing the harmful effects of parts being scattered from an aging existing building and causing harm to the surroundings, and an important object of the present invention is to easily make an existing building safe. The purpose is to provide an anti-scattering method for an existing building, which covers the state and prevents parts from being scattered from the building.

In the method for preventing scattering of an existing building of the present invention, a part or the whole of an existing building installed on the ground is covered with a cover sheet made of a heat-shrinkable sheet, and the heat-shrinkable sheet is heat-shrinked. The cover sheet is brought into close contact with the building, and the existing building is held and covered by the close contact cover sheet while being held in the pressed state from the outside. Suppresses scattering with.

This method has the advantage of being able to quickly and inexpensively protect existing buildings installed on the ground in a safe state.

It is a perspective view of the existing building which concerns on one Example of this invention. It is a perspective view which shows the state which the heat shrink sheet which concerns on one Example of this invention covers an existing building. It is a perspective view which shows the state which the plurality of heat shrink sheets which concerns on one Example of this invention provide a laminated part and cover an existing building. It is a perspective view which shows the state which covers the whole existing building which concerns on one Example of this invention with a cover sheet. It is a partially enlarged perspective view which shows the state which covers a part of the building including the roof which concerns on one Example of this invention. It is a partially enlarged perspective view which shows the state which covers the protruding part of the building which concerns on one Example of this invention with a cover sheet.

Hereinafter, the present invention will be described in detail with reference to the drawings. In the following description, terms indicating a specific direction or position (for example, "upper", "lower", and other terms including those terms) are used as necessary, but the use of these terms is used. This is for facilitating the understanding of the invention with reference to the drawings, and the meaning of these terms does not limit the technical scope of the present invention. Further, the parts having the same reference numerals appearing in a plurality of drawings indicate the same or equivalent parts or members.
Furthermore, the embodiments shown below show specific examples of the technical idea of the present invention, and do not limit the present invention to the following. In addition, the dimensions, materials, shapes, relative arrangements, etc. of the constituent parts described below are not intended to limit the scope of the present invention to the specific description, but are exemplified. It was intended. Further, the contents described in one embodiment and the embodiment can be applied to other embodiments and the examples. In addition, the size and positional relationship of the members shown in the drawings may be exaggerated in order to clarify the explanation.

In the method for preventing scattering of an existing building according to the first embodiment of the present invention, preferably, the entire area including the roof portion of the aged existing building is covered with a cover sheet made of a heat-shrinkable sheet, and the heat-shrinkable sheet is heat-shrinked. By doing so, the cover sheet is in close contact with the building, and the cover sheet that is in close contact holds and covers the existing building in a pressed state, and the cover sheet that covers the existing building scatters the parts of the existing building due to strong winds, earthquakes, etc. Suppress.

In the method for preventing scattering of an existing building according to a second embodiment of the present invention, the lower end of the cover sheet is bound with a binding string surrounding the existing building, the existing building is covered with the cover sheet, and the heat-shrinkable sheet is heat-shrinked in this state. Then, the cover sheet is pressed to cover the existing building. In this method, the lower end of the cover sheet is tied with a binding string that surrounds the existing building, and the existing building is covered with the cover sheet. Scattering of parts can be suppressed.

In the method for preventing scattering of an existing building according to a third embodiment of the present invention, the existing building has the building installed on the foundation, and the lower end of the cover sheet is fixed to either the building, the foundation, or the ground. The heat-shrinkable sheet is heat-shrinked. In this method, the lower end of the cover sheet is fixed to either the building, the foundation, or the ground, so that the cover sheet covering the entire existing building can be reliably fixed and heat-shrinked. Therefore, in this method, the existing building can be reliably covered with the heat-shrinkable cover sheet in a pressed state, and the scattering of all parts can be effectively suppressed.

In the method for preventing scattering of an existing building according to a fourth embodiment of the present invention, a plurality of heat-shrinkable sheets are heat-welded and connected, and a cover sheet composed of the plurality of connected heat-shrinkable sheets covers the entire existing building. Can be covered. In this anti-scattering method, an existing building is covered with a plurality of strip-shaped heat-shrinkable sheets, and the side edges of the heat-shrinkable sheets laminated on the outside are heat-welded and connected to the heat-shrinkable sheet laminated on the inner surface. Therefore, the entire existing building can be covered as one cover sheet. Therefore, it is possible to cover the entire existing building having a different outer shape and shape by using a strip-shaped heat-shrinkable sheet having a predetermined width.

In the method for preventing scattering of an existing building according to a fifth embodiment of the present invention, a plurality of heat-shrinkable sheets are heat-welded and connected at a boundary portion to cover the entire existing building, and then a heat-shrinkable sheet of a cover sheet is used. Is heat-shrinked and brought into close contact with the building in a pressed state. In this method, a plurality of strip-shaped heat-shrinkable sheets can be heat-welded to cover the entire existing building, and in this state, the heat-shrinkable sheet can be heat-shrinked and the entire existing building can be covered with a cover sheet in a pressed state.

In the method for preventing scattering of an existing building according to a sixth embodiment of the present invention, the heat-shrinkable sheet is used as a waterproof sheet, and a plurality of heat-shrinkable sheets are connected to a watertight structure to cover the existing building so that rainwater does not enter. .. In this method, a cover sheet can be covered so that rainwater does not enter the existing building, and corrosion of the existing building due to the invading rainwater can be prevented.

In the method for preventing scattering of an existing building according to a seventh embodiment of the present invention, an existing building having a protruding eave is covered with a cover sheet and heat-shrinked in this state to cause the eave to protrude from the outer wall surface of the building body. Underneath, an inclined part where the cover sheet inclines in an undercut shape is provided, and by providing a ventilation opening in this inclined part, rainwater does not enter the existing building and the inside can be ventilated as a structure of the existing building. Prevent corrosion more effectively.

(Embodiment 1)
FIG. 1 shows an existing building 1 in which a building is installed on a foundation 21 provided on the ground. In FIGS. 1 to 6, for example, from an aging existing building 1 fixed to a foundation 21, parts such as roof tiles and galvanized iron plates are suppressed from being scattered around the building due to strong winds such as typhoons and gusts. The state of covering with the cover sheet 2 is shown. The cover sheet 2 is a heat-shrinkable sheet 13 that covers the existing building 1 and then heat-shrinks it to adhere to the building surface in a pressed state. The cover sheet 2 is heat-shrinked and adheres to the building in a pressed state, but does not adhere to the entire surface of the building, but adheres to the protruding portion such as the eaves 3 of the roof so that the parts are not scattered. Cover in a pressed state. As the cover sheet 2, a non-water-permeable waterproof sheet is preferably used. The non-permeable cover sheet 2 can prevent rainwater from entering the building by covering the area including the roof portion in a state of covering the existing building 1. Therefore, there is a feature that it is possible to prevent harmful effects caused by rainwater invading the building, such as internal corrosion caused by rainwater, generation of mold, and harmful effects caused by white ants. More preferably, a non-breathable sheet is used for the cover sheet 2. The non-breathable cover sheet 2 has a feature that the existing building 1 can be sterilized by injecting an insecticidal fungicide or an insecticidal gas into the existing building 1 in a state of covering the existing building 1.

The cover sheet 2 can cover the existing building 1 and protect it with sufficient strength. In particular, the cover sheet 2 is heat-shrinked while covering the building and adheres to the building in a pressed state to effectively prevent scattering of parts. The cover sheet 2 is a heat-shrinkable sheet 13 having a thickness of preferably 0.5 mm or more and 6 mm or less, preferably 1 mm or more and 3 mm or less. As the heat-shrinkable sheet 13, vinyl chloride, silicone rubber, a fluorinated polymer, or the like can be used. In particular, as the cover sheet 2, the heat-shrinkable sheet 13 made of a thermoplastic resin is most suitable. The cover sheet 2 is formed by laminating a plurality of heat-shrinkable sheets 13 at a connecting portion, heating the laminated portion 4 to a state where it can be heat-welded by a welder 5 that forcibly blows hot air, and heating the outside in a state where it can be heat-welded. The heat-shrinkable sheet 13 is pressed against the heat-shrinkable sheet 13 on the inner surface with a palm or a face material, and can be easily heat-welded and connected. However, the present invention does not specify the cover sheet 2 as the heat-shrinkable sheet 13 of the thermoplastic resin, but connects a plurality of heat-shrinkable sheets at the construction site to efficiently cover the existing building 1 and heat-shrinks in this state. All other heat-shrinkable sheets 13 that are allowed to adhere to the building in a pressed state can be used.

In an existing building 1 that has deteriorated, roofing materials such as roof tiles and galvanized iron plates are likely to fall due to typhoons and earthquakes, and roofing materials are likely to scatter from high places to long distances and cause greater harm to the surroundings in strong winds. Will be higher. Therefore, in the scattering prevention method of the existing building 1, it is important to cover at least the area including the roof 7 of the building with the cover sheet 2 to surely suppress the scattering of the roofing material. As a method for preventing scattering of the existing building 1, for example, the roof 7 and the upper part of the building are covered with the cover sheet 2, preferably the area including the roof 7 and the hisashi 6 is covered with the cover sheet 2, and more preferably the roof 7 and the hisashi. 6 and the area including the fragile window are covered with the cover sheet 2, and optimally, the entire building is covered with the cover sheet 2.

The cover sheet 2 shown in FIG. 4 covers the entire existing building 1 installed on the ground so as to be packed. This method has a feature that all the parts of the existing building 1 can be surely prevented from being scattered. The cover sheet 2 that covers the existing building 1 can preferably bind the lower end portion to the existing building 1 with a binding string 8 and fix the cover sheet 2 to the existing building 1. In this method, the lower end edge of the cover sheet 2 is U-bent and folded back, and the binding string 8 is arranged at the U-curved portion 9 to bind the cover sheet 2 to the building. The enlarged cross-sectional view of FIG. 5 and the enlarged perspective view of FIG. 6 show the U-curved portion 9 of the cover sheet 2. In the cover sheet 2 shown in these figures, the folded upper end edge portion is laminated on the surface of the cover sheet 2 and heat-welded. In this structure, rainwater does not flow into the U-curved portion 9 of the binding string 8 and the binding string 8 is arranged so as not to be displaced at the stop position of the cover sheet 2, and the binding string 8 secures the cover sheet 2. Can be united in a building.

The cover sheet 2 that covers the entire building can be securely fixed by binding the lower end edge to the foundation 21 of the building with a binding string 8. Further, although the cover sheet covering the upper part of the building is not shown, the lower end edge can be bound and fixed to the outer wall of the building with a binding string. Further, in the cover sheet 2 of FIG. 6, a part of the binding string 8 is exposed from the cover sheet 2, the fixing string 10 is connected to the exposed portion 8A of the binding string 8, and the fixing string 10 is driven into the ground 20. It is connected to the fixed pile 11. This structure can surely prevent the outer peripheral edge of the cover sheet 2 from being rolled up by a strong wind or the like, and can keep the entire building in a covered state. The lower end of the cover sheet 2 can be fixed directly to the building, fixed to the foundation 21 of the building, or fixed to the ground 20 to keep the building in a covered state. For the cover sheet 2 directly fixed to the building, the lower end edge is tied with a binding string 8 surrounding the building, or a fixing plate 12 is arranged on the surface of the cover sheet 2 and the fixing plate 12 is screwed to the building. It can be fixed and fixed by a method such as nailing. The cover sheet to be fixed to the foundation is not shown, but the fixing plate on the surface of the cover sheet can be fixed to the foundation by screwing or nailing. The cover sheet fixed to the ground can be fixed by directly connecting the cover sheet to a fixture such as a pile driven or buried in the ground, or by connecting via a string-like body. With the above fixing structure, the cover sheet can be more reliably fixed by fixing a plurality of places to the building, the foundation 21, or the ground 20.

The cover sheet 2 covers the building by connecting a plurality of heat-shrinkable sheets 13 in a strip shape at a boundary portion. In this step, the entire building is covered without connecting the plurality of heat-shrinkable sheets 13. The plurality of heat-shrinkable sheets 13 are laminated at the boundary portion with the adjacent heat-shrinkable sheets 13 so as not to expose a part of the building to the outside, and cover the entire building. After that, the laminated portion 4 is heat-welded and connected to one cover sheet. In the heat welding, the laminated portion 4 of the heat shrink sheet 13 is heated to a temperature at which heat welding can be performed, and the outer heat shrink sheet 13 is pressed against the inner heat shrink sheet 13 to be welded. To heat the laminated portion 4, hot air is blown or a heating plate is pressed to heat the laminated portion 4 to a heat welding temperature. The plurality of heat-shrinkable sheets 13 that cover the entire building cover the entire building so that the building is not exposed. The heat-shrinkable sheets 13 are placed on the building, and the overlapping width with the adjacent heat-shrinkable sheets 13 is adjusted to cover the entire existing building 1 so as not to be exposed. The heat-shrinkable sheet 13 that covers the entire building in this state has a strip shape having a width of 1 m to 3 m, and covers the entire building while adjusting the overlapping width. The plurality of heat-shrinkable sheets 13 that cover the entire building are formed into one cover sheet 2 by heat-welding and connecting the laminated portions, that is, the laminated portions 4.

In the cover sheet 2, a plurality of heat-shrinkable sheets 13 are heat-welded and connected to one sheet, the existing building 1 is covered with the sheet connected to one sheet, and further, the binding string 8 and the fixing plate 12 are used to form the building. In the fixed state, the heat-shrinkable sheet 13 is heated and heat-shrinked. The heat-shrinked cover sheet 2 adheres to the surface of the building, holds the building in a pressed state, and covers the building. The cover sheet 2 that holds and covers the existing building 1 in a pressed state from the outside adheres to a protruding portion of the building, for example, an eaves 3 or a hisashi 6, and holds and covers the existing building 1 in a pressed state. In the old existing building 1, the parts of the protruding portion are most likely to be scattered, but the cover sheet 2 that holds and covers this portion in the pressed state effectively suppresses the scattering of the parts from the building. When the cover sheet 2 shrinks due to heat shrinkage and is locally damaged, a new heat-shrinkable sheet 13 can be laminated on the surface of the damaged portion and heat-welded to repair. The repaired portion has a tougher structure by laminating a plurality of heat-shrinkable sheets 13 to prevent subsequent damage.

The cover sheet 2 in which the heat-shrinkable sheet 13 of the non-breathable waterproof sheet is heat-welded and connected to one sheet blocks the air in the covered building from the outside air and suppresses the ventilation of the outside air. FIG. 6 shows a structure that ventilates the internal air while covering the building. In this structure, the eaves 3 in which the existing building 1 protrudes from the building body is covered with the cover sheet 2, the cover sheet 2 is heat-shrinked, and the cover sheet 2 is under the eaves 3 protruding from the outer wall surface of the building. An inclined portion 2A that is inclined in a cut shape is provided, and a ventilation opening 2B is provided in the inclined portion 2A. The inclined portion 2A can be realized by fixing the cover sheet 2 covering the eaves bottom to the building with the fixing plate 12. The ventilation opening 2B is located under the eaves to prevent rainwater from entering, and ventilates the air inside the building covered with the cover sheet 2 with the outside air. The cover sheet 2 under the eaves is adjusted in a position to be fixed to the outer wall 14 of the building under the eaves, and the inclination angle (α) of the inclined portion 2A is set as an optimum value to more effectively prevent rainwater from entering through the ventilation opening 2B. Realize the features that can be done.

INDUSTRIAL APPLICABILITY The present invention can be effectively used to protect an aging existing building in which roofing materials and the like are damaged and scattered due to strong winds and earthquakes.

1 ... Existing building 2 ... Cover sheet 2A ... Inclined part 2B ... Ventilation opening 3 ... Eaves 4 ... Laminated part 5 ... Welder 6 ... Hisashi 7 ... Roof 8 ... Bundling string 8A ... Exposed part (binding string)
9 ... U curved part 10 ... Fixed string 11 ... Pile 12 ... Fixed plate 13 ... Heat shrink sheet 14 ... Outer wall 20 ... Ground 21 ... Foundation

Claims (7)

It is a method to suppress the scattering of parts of existing buildings installed on the ground.
Part or all of the existing building, including the roof
Cover with a cover sheet of heat shrink sheet, heat shrink and make it adhere to the building,
The existing building is covered with a pressed state,
A method for preventing parts scattering in an existing building, which comprises suppressing scattering of parts in the existing building. The method for preventing scattering of an existing building according to claim 1.
The lower end of the cover sheet
In a state of being tied with a binding string surrounding the existing building
A method for preventing scattering of an existing building, which comprises heat-shrinking the cover sheet. The method for preventing scattering of an existing building according to claim 1 or 2.
The existing building has a building on the foundation,
With the lower end of the cover sheet fixed to either the building, the foundation, or the ground,
A method for preventing parts scattering of an existing building, which comprises heat-shrinking the cover sheet. The method for preventing scattering of parts in an existing building according to any one of claims 1 to 3.
Multiple heat-shrinkable sheets are heat-welded and connected,
With the cover sheet composed of a plurality of heat-shrinkable sheets connected,
A method for preventing parts scattering of an existing building, which comprises covering the existing building. The method for preventing scattering of parts in an existing building according to claim 4.
After coating the existing building by heat-welding a plurality of heat-shrinkable sheets at the boundary portion,
A method for preventing parts scattering of an existing building, which comprises heat-shrinking the cover sheet composed of a plurality of heat-shrinkable sheets and bringing them into close contact with the building in a pressed state. The method for preventing scattering of parts in an existing building according to claim 4 or 5.
The heat-shrinkable sheet is a waterproof sheet
A plurality of the heat-shrinkable sheets are connected to a watertight structure to form a watertight structure.
A method for preventing parts scattering of an existing building, which comprises covering the existing building with a structure that prevents rainwater from entering. The method for preventing scattering of parts in an existing building according to any one of claims 1 to 6.
The existing building has an eave that protrudes from the building body,
The cover sheet is heat-shrinked to
Under the eaves protruding from the outer wall of the building body,
An inclined portion in which the cover sheet is inclined in an undercut shape is provided.
A method for preventing parts scattering of an existing building, which comprises providing a ventilation opening in the inclined portion.

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