JP2011058257A - Protective apparatus for building - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a protective apparatus for a building that can easily protect the building from large impact force at low cost. <P>SOLUTION: The apparatus for protecting the building 1 from impact force includes support members 20 of cylindrical shape each having a notched groove 21 opening a cross section, at a portion extending over the whole length along an axial direction, and panel members 10 of plate shape plastically deformed when impact force is applied. The panel members 10 are held to wall structures 1a, 1b constituting a wall of the building 1, through the support members 20. The surfaces of the wall structures 1a, 1b are thereby covered with the panel members 10 in a state of securing a clearance between the wall structures 1a, 1b, and the panel members 10 are deformed with the deformation of the support members 20 when the impact force is applied. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a device for protecting a building from an impact force such as a blast pressure generated in an explosion.

  As this type of prior art, there is one described in Patent Document 1, for example. In this conventional apparatus, a shielding structure is provided around a building to be protected, and an impact force absorbing mechanism is provided on the shielding structure. The shielding structure is a wall structure made of, for example, reinforced concrete. The impact force absorbing mechanism includes, for example, an oil damper attached to the surface of the shielding structure and a panel member attached to the tip of the oil damper.

  In the protective device configured as described above, for example, when an explosion occurs in the vicinity of a building, the panel member is displaced, and the oil damper operates to absorb the impact force due to the blast pressure. It is possible to prevent a situation in which an impact force is directly applied to the.

JP 2005-282266 A

  As an impact absorbing mechanism, not only an oil damper but also a simple type using a U-shaped or Z-shaped steel damper is disclosed. However, in the prior art, an oil damper or a steel damper absorbs an impact force. For this reason, when a large impact force is targeted, a large number of oil dampers and steel dampers are required, and it is not necessarily preferable in terms of cost when applied.

  An object of this invention is to provide the protection apparatus of the building which can protect a big impact force cheaply and simply in view of the said situation.

  In order to achieve the above-mentioned object, the present invention is a device for protecting a building from an impact force. The device has a cylindrical shape and has a notch groove that opens a cross-section at a portion extending over the entire length along the axial direction. A supporting member and a panel member that is formed in a plate shape and plastically deforms when an impact force is applied thereto, and the wall member constituting the wall of the building is held by the supporting member via the supporting member. By covering the surface of the wall structure with the panel member in a state where a gap is secured between the wall structure and the panel member with deformation due to plastic buckling of the support member when an impact force is applied. It is characterized by being deformed.

  Further, the present invention provides the above-described protection device for a building, wherein the support member has a cylindrical shape, and holds the edge portions of the panel members at portions facing each other across the notch groove. And

  Moreover, the present invention is characterized in that, in the above-described protection device for a building, the panel member is configured in a flat plate shape by a thin steel material.

  According to the present invention, the impact force due to the blast pressure or the like is absorbed by plastic deformation of the panel member in addition to the support member being deformed by plastic buckling. Therefore, even when a building is protected from a large impact force, it is not necessary to provide a large number of support members, and the structure can be configured relatively inexpensively and simply.

FIG. 1 is a cross-sectional view conceptually showing an essential part of a building to which a protective device according to an embodiment of the present invention is applied. FIG. 2 is an enlarged cross-sectional side view showing a main part of the protective device shown in FIG. FIG. 3 is a front view of a main part of the protective device shown in FIG. FIG. 4 is a perspective view of a main part of the protective device shown in FIG. FIG. 5 is a cross-sectional side view showing an example after the blast pressure acts on the protective device shown in FIG. 1.

  DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, preferred embodiments of a building protection apparatus according to the invention will be described in detail with reference to the accompanying drawings.

  1 to 4 show a building to which a protective device according to an embodiment of the present invention is applied. The protective device illustrated here is for protecting the building 1 from the impact force against an explosion generated in the enclosed space of the building, and includes a plurality of panel members 10.

  The panel member 10 is formed in a rectangular flat plate shape using a thin steel material. The individual panel members 10 cover the entire inner surface of the wall structure 1a constituting the side wall of the building 1 and the entire inner surface of the wall structure 1b constituting the ceiling via the support member 20 so as to cover the entire inner surface of the wall structure 1b. , 1b. The support member 20 is formed of a thin steel material in a cylindrical shape and has a notch groove 21. The notch groove 21 is a narrow opening formed along the axial direction of the support member 20, and functions so as to open the transverse section of the support member 20 by being provided at a portion extending over the entire length of the support member 20. .

  A plurality of support members 20 having the above-described configuration are attached to the inner surfaces of the respective wall structures 1a and 1b in such a manner that they extend in parallel to each other with screws in a state where a space is secured between them. Each support member 20 is arranged in a state in which the notch groove 21 faces inward of the building 1. Thus, with respect to the support member 20 disposed on the wall structures 1a and 1b, the edge portions of the panel member 10 are held by screws at portions facing each other with the notch groove 21 therebetween.

  That is, the panel member 10 is arranged in a state in which a gap is secured between the panel members 10 and the inner surfaces of the wall structures 1a and 1b by attaching the support members 20 between the support members 20 arranged adjacent to each other via the edge portions. It is set up. The gap secured between the panel member 10 and the inner surfaces of the wall structures 1a and 1b is set to a size that allows the panel member 10 to be sufficiently plastically deformed. A joint is formed between the adjacent panel members 10 by filling the caulking material 30 with each other.

  In the protective device configured as described above, when an explosion occurs inside the building 1, the impact force due to the blast pressure acts on the surface of the panel member 10, and the support member 20 is deformed as shown in FIG. 5. Thus, the panel member 10 is plastically deformed. More specifically, when the impact force due to the blast pressure acts on the panel member 10, the panel member 10 is pressed so as to be convex toward the outside of the building, so that each notch groove 21 is expanded. The panel member 10 is plastically deformed so as to be convex outward with the deformation of the support member 20 and with the plastic buckling. That is, the impact force due to the blast pressure is absorbed not only by the deformation of the support member 20 but also by the deformation of the panel member 10. Therefore, even when the building 1 is protected from a large impact force, it is not necessary to provide a large number of support members 20, and the structure 1 can be constructed at a relatively low cost.

  In the above-described embodiment, the panel member 10 is provided on the wall structures 1a and 1b constituting the side wall and the ceiling wall of the building 1, but the panel member 10 is provided on the wall structure constituting the floor surface. May be provided.

  Moreover, in embodiment mentioned above, although what was comprised in the rectangular flat plate shape with the steel material is applied as the panel member 10, it is not necessarily limited to this. For example, it is also possible to apply as a panel member a steel wire assembled in a mesh shape and configured in a panel shape.

  Furthermore, in embodiment mentioned above, it is trying to attach between the support member 20 and wall structure 1a, 1b and between the support member 20 and the panel member 10, respectively, but other things, such as welding, are attached. You may make it attach between the supporting member 20 and wall structure 1a, 1b or between the supporting member 20 and the panel member 10 by the method.

  Furthermore, in the above-described embodiment, the panel member 10 is provided on the inner surface of the wall structures 1a and 1b. However, if the panel member 10 is provided on the outer surface, the panel member 10 is protected from an impact force caused by an explosion generated outside the building 1. Will be able to.

DESCRIPTION OF SYMBOLS 1 Building 1a, 1b Wall structure 10 Panel member 20 Support member 21 Notch groove

Claims (3)

In a device for protecting a building from impact force,
A support member having a notch groove that opens a cross section in a portion extending over the entire length along the axial direction, and a panel member that has a plate shape and is plastically deformed when an impact force is applied; Comprising
By holding the panel member through the support member on the wall structure constituting the wall of the building, the surface of the wall structure is covered with the panel member in a state in which a gap is secured between the wall structure and the wall member. A building protection device that deforms a panel member with deformation of a support member when an impact force is applied.   2. The building protection apparatus according to claim 1, wherein the support member is formed in a cylindrical shape, and holds the edge portions of the panel members at portions facing each other across the notch groove.   2. The building protection apparatus according to claim 1, wherein the panel member is formed in a flat plate shape by a thin steel material.

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