JP5105151B2 - Lightning protection equipment for building side walls - Google Patents

Description

  The present invention relates to a side wall lightning protection device for a building that prevents lightning from being received and damaged by the side wall of the building.

  Recently, conventional standards for lightning protection equipment such as buildings have been changed, and according to the revised standard, protection against side wall lightning in a high-rise building exceeding 60 m is stipulated. However, at present, many buildings with a length of more than 60 m do not have protection against side wall lightning, and damage such as a part of the side wall portion being destroyed and falling due to lightning strikes from side wall lightning has occurred.

In order to prevent such damage from lightning on the side wall of a building, Japanese Patent Laying-Open No. 2005-185017 discloses an outer wall unit in a building that constitutes an outer wall by fixing a mounting bracket of the outer wall unit to a steel frame member. The lightning conductor on the surface side of the outer wall is connected to the mounting bracket with a connecting conductor that passes through the interior, and the lightning conductor on the surface side of the outer wall unit is connected to the connection conductor. An apparatus for protecting a side wall lightning of a building that is grounded via a body, a mounting bracket, and a steel frame member is disclosed.
JP 2005-185017 A

  However, the conventional side wall lightning arrester employs a configuration in which the connecting conductor is fixed to the end of the outer wall unit in advance and connected to the steel frame via the mounting bracket, so that the degree of freedom in construction is low. It was what had.

  An object of the present invention is to provide a side wall lightning protection device for a building that solves the problems of the prior art, has a high degree of freedom in construction, is easy to construct, can shorten the construction period, and reduces costs.

In order to solve the above-mentioned problem, the side wall lightning protection device for a building according to the present invention is preliminarily installed in an outer wall panel 1 made of a PC plate and has a T-shape consisting of a horizontal portion 2 and a vertical portion 3, and the horizontal portion is the above-mentioned A lightning conductor mounting bracket 4 exposed on the surface of the outer wall panel is provided, and the vertical portion of the lightning conductor mounting bracket is connected to the structural steel frame 8 for connection between the rear surface exposed portion where the rear wall surface protrudes from the rear surface side of the outer wall panel. It connects with the material 7, and installs the lightning-receiving material 5 of the L-shaped cross section in the surface side exposed part of the said lightning-receiving material mounting bracket more than the thickness of the decorative tile which affixes the front-end | tip height on the surface of the said outer wall panel. Features.

Moreover, the side wall lightning protection equipment for a building according to the present invention is characterized in that the lightning- receiving material having the L-shaped cross section is fixed in advance to a horizontal portion of the lightning- receiving material mounting bracket.

Moreover, the side wall lightning protection equipment for a building according to the present invention is characterized in that the lightning- receiving member mounting bracket and the L-shaped lightning-receiving material are made of stainless steel.

The lightning-receiving material is provided with a lightning-receiving member mounting bracket that is preliminarily installed in the outer wall panel made of the PC plate of the present invention and is T-shaped consisting of a horizontal part and a vertical part, and the horizontal part is exposed on the surface of the outer wall panel. The back surface side exposed portion of the mounting bracket and the structural steel frame are connected by a conductive material for connection, and the light receiving member having an L-shaped cross section is connected to the exposed surface portion of the lightning material mounting bracket with the tip height of the outer wall panel. By installing the wall tiles with a thickness equal to or greater than the thickness of the decorative tiles to be attached to the surface, it is easy to install the side wall lightning protection equipment, and the side wall lightning protection equipment has little protrusion of lightning protection material on the wall surface and does not impair the appearance. The fixing area for fixing the lightning-receiving material can be increased, and the lightning-receiving material can be firmly attached.
The structure in which the L-shaped lightning-receiving member is fixed in advance to the horizontal portion of the lightning-receiving member mounting bracket facilitates the construction of the side wall lightning arrester, and is based on the welding heat to the adhesive that attaches the decorative tile to the outer wall panel. The effect can be prevented.
Corrosion due to salt contained in the sea breeze can be prevented by the configuration in which the lightning-receiving member mounting bracket and the lightning-receiving material are made of stainless steel.

  Embodiments of the present invention will be described with reference to the drawings. 1-4 is a figure which shows one Embodiment of the side wall lightning protection equipment of the building of this invention.

  In this embodiment, the side wall lightning protection device for a building is such that an outer wall panel 1 made of a PC plate made of a non-conductive material is supported on a structural steel frame such as an outer wall material supporting steel frame by a fixture (not shown). Applies to the outer wall structure of buildings. As shown in FIG. 2, the horizontal portion 2 of the T-shaped light-receiving member mounting bracket 4 composed of the horizontal portion 2 and the vertical portion 3 is located on the surface of the outer wall panel 1 and is exposed on the outer wall panel 1. The vertical portion 3 extends in the thickness direction of the outer wall panel 1 and is installed at the time of manufacturing the outer wall panel 1 so as to protrude to the back surface side. The horizontal part 2 and the vertical part 3 are plate-shaped having a predetermined width. As the material for the lightning-receiving member mounting bracket 4, it is desirable to use stainless steel in consideration of corrosion resistance.

  The horizontal portion of the lightning-receiving member 5 having an L-shaped cross section as shown in FIG. 3 is fixed to the horizontal portion 2 of the lightning-receiving member mounting bracket 4 by fixing means such as spot welding or bolting. Since there is no useless protrusion, fixing by spot welding is desirable. The lightning-receiving material 5 having an L-shaped cross section extends in the direction in which the horizontal portion 2 of the lightning-receiving member mounting bracket 4 extends, and has a length that can be accommodated in one outer wall panel 1. In this embodiment, the lightning-receiving material 5 having an L-shaped cross section is installed so as to extend in the lateral direction of the outer wall panel 1, but may be installed in the vertical direction. The reason for the L-shaped cross section is that a shape having a portion protruding from the flat plate is suitable as a lightning-receiving material and is easy to process.

  A decorative tile 6 is attached to the surface side of the outer wall panel 1 with an adhesive or the like. The light receiving member 5 having a L-shaped cross section fixed to the horizontal portion 2 of the lightning receiving member mounting bracket 4 has a thickness equal to or greater than the thickness of the decorative tile 6 and is disposed so as to protrude from the surface of the decorative tile 6. It is desirable to use stainless steel as the light-receiving material 5 having an L-shaped cross section in consideration of corrosion resistance, and it can be easily formed into an L-shaped cross section by bending.

  The light-receiving material 5 having the L-shaped cross section may be attached to the outer wall panel 1 after the outer wall panel 1 is installed on the side wall of the building, but it is attached to the adhesive for attaching the decorative tile 6. Considering the influence of welding heat or bolting vibration and the difficulty of fixing work for welding or bolting at high places, it is desirable to carry out before the outer wall construction. It is desirable that the decorative tile 6 is attached after the attachment work of the light-receiving material 5 having the L-shaped cross section to the outer wall panel 1 is not affected by the welding heat of the adhesive or the vibration of bolting. .

  A hole for fixing one terminal 9 of the connecting conductive material 7 by pressure is formed in the lightning-receiving member mounting bracket 4 protruding to the back side of the outer wall panel 1. The connection of the lightning receiving member mounting bracket 4 and the conductive material 7 for connecting the structural steel frame 8 is carried out along with the outer wall construction. First, the other terminal 9 of the connecting conductive material 7 is fixed to the structural steel frame 8. After the outer wall panel 1 is installed at a predetermined position in accordance with the outer wall construction, the lightning protection equipment for the side wall is provided with a hole through which the connecting conductive material 7 is formed in the protruding portion of the lightning-receiving member mounting bracket 4 on the back side of the outer wall panel 1. The box 10 is fixed with fixing bolts. In the side wall lightning protection equipment protection box 10, one terminal of the connection conductive material 7 is crimped and fixed to the protruding portion on the back side of the lightning-receiving material mounting bracket 4. In this embodiment, the insulating sheath 11 is coated on the outer periphery of the connecting conductive material 7.

  When the power receiving material 5 having an L-shaped cross section is fixed to the outer wall panel 1 in advance and the decorative tile 6 is pasted, the construction of the side wall lightning protection equipment accompanying the outer wall construction is performed with the structural steel frame 8 on the back side of the outer wall panel 1. It is only necessary to perform the construction using the conductive material for connecting the lightning material mounting bracket, and the side wall lightning protection device for the building can be constructed very easily. In the present embodiment, the case where the lightning-receiving material having the L-shaped cross section is fixed to the surface of the outer wall panel 1 in advance has been described. However, the lightning-receiving material 5 having the L-shaped cross section is installed after the building of the outer wall panel 1 is installed. May be.

  FIG. 4 shows another embodiment of the side wall lightning protection device for a building of the present invention. In this embodiment, the configuration of driving and installing the lightning-receiving member mounting bracket 4 to the outer wall panel 1 and the mounting configuration of the L-shaped lightning-receiving member 5 to the lightning-receiving member mounting bracket 4 are shown in FIGS. Since it is the same as that of embodiment, it abbreviate | omits. In this embodiment, the terminal 9 of the connecting conductive material 7 is fixed to the bent portion so that the protruding portion on the back surface side of the outer wall panel 1 of the lightning conductor mounting bracket 4 is in contact with the back surface of the outer wall panel 1. . Since the lightning-receiving member mounting bracket 4 does not protrude from the back surface of the outer wall panel 1, the connection space of the connecting conductive material 7 can be reduced. The structure for fixing the side wall lightning protection box 10 and connecting the conductive material 7 for connection to the structural steel frame 8 is the same as in the embodiment shown in FIGS.

  FIG. 5 shows another embodiment of the side wall lightning protection device for a building according to the present invention. In this embodiment, the configuration of driving and installing the lightning-receiving member mounting bracket 4 to the outer wall panel 1 and the mounting configuration of the L-shaped lightning-receiving member 5 to the lightning-receiving member mounting bracket 4 are shown in FIGS. Since it is the same as that of embodiment, it abbreviate | omits. In this embodiment, the distance between the structural steel frame 8 and the lightning-receiving member mounting bracket 4 projecting from the back surface of the outer wall panel 1 is short, and it is adopted in a case where there is no space for installing the side wall lightning protection box 10. The lightning-receiving member mounting bracket 4 and the structural steel frame 8 projecting on the back surface are connected by a connecting conductive material 7 without an insulating sheath 11.

  As described above, the side wall lightning protection device for a building of the present invention is easy to construct and can shorten the construction period, so that the cost can be reduced, and the lightning-receiving material 5 having an L-shaped cross section is placed on the horizontal portion of the lightning-material mounting bracket 4. Because it is firmly attached, it has excellent durability and does not impair the beauty of the outer wall of the building.

It is a figure which shows embodiment of this invention. It is a figure which shows embodiment of this invention. It is a figure which shows embodiment of this invention. It is a figure which shows embodiment of this invention. It is a figure which shows embodiment of this invention.

Explanation of symbols

  1: Outer wall panel, 2: Horizontal part, 3: Vertical part, 4: Lightning-receiving material mounting bracket, 5: Lightning-receiving material with L-shaped cross section, 6: Cosmetic tile, 7: Conductive material for connection, 8: Steel frame for structure , 9: terminal, 10: side wall lightning protection box, 11: insulating sheath,

Claims (3)

A lightning-receiving member mounting bracket (4), which is preliminarily installed in an outer wall panel made of a PC plate and has a T-shape consisting of a horizontal part and a vertical part, with the horizontal part exposed on the surface of the outer wall panel. The vertical portion of the mounting bracket is connected to the back side exposed portion protruding from the back side of the outer wall panel and the structural steel with a conductive material for connection, and the surface side exposed portion of the lightning striker mounting bracket has an L-shaped cross section. A lightning protection device for a side wall of a building, characterized in that a lightning-receiving material is installed with a height of a tip thereof equal to or greater than a thickness of a decorative tile to be attached to the surface of the outer wall panel.   The side wall lightning protection device for a building according to claim 1, wherein the lightning-receiving material having the L-shaped cross section is fixed in advance to a horizontal portion of the lightning-receiving material mounting bracket.   The lightning protection device for a side wall of a building according to claim 1 or 2, wherein the lightning receiving member mounting bracket and the lightning receiving material having an L-shaped cross section are made of stainless steel.

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