JP4083110B2 - Side wall lightning protection outer wall unit and side wall lightning protection mechanism in buildings - Google Patents

Description

  The present invention relates to a side wall lightning protection outer wall unit and a side wall lightning protection mechanism in a building.

  There is JIS A4201-1992 (Lightning Arrester for Buildings, etc.) as a conventional standard for lightning arresters such as buildings, and this standard does not stipulate protection against side wall lightning. It was revised on the 8th in conformity with IEC61024-1 (Lightning protection for buildings), and revised JIS A4201-2003 provides protection against side wall lightning. On the other hand, lightning protection equipment according to the Building Standards Law is required to be installed by JIS, but at present, installation by JIS before the above revision is permitted by notification of the former Ministry of Construction.

  Since JIS before the revision does not stipulate protection against side wall lightning, at present, many skyscrapers exceeding 60m (20m at the highest protection level) do not have protection against side wall lightning. However, in a building where the conductor is not exposed on the surface, such as a tiled PC board, damages such as a part of the side wall portion being destroyed and falling due to a lightning strike on the side wall have occurred.

  In order to prevent the occurrence of damage due to such side wall lightning, when a revised JIS is applied in the future, for buildings exceeding 60 m, lightning is applied to the side wall portion in order to protect the side wall surface from lightning. When it is received, it is necessary to provide a protection mechanism for promptly flowing the lightning current to the ground.

On the other hand, as conventional examples of lightning protection equipment in buildings, there are those described in Patent Documents 1 to 4, for example. Patent Documents 1 to 3 disclose a protection mechanism configured to install a lightning conductor for a predetermined length on a roof of a building, and do not mention protection from side wall lightning. On the other hand, Patent Document 4 discloses a mechanism for protecting the side wall portion from side wall lightning, and this protection mechanism is the same as the surface of the surface layer plate on the side surface of the surface layer plate attached to the side wall of the building. A vertical lightning conductor is fixed so that it becomes a plane, and the vertical lightning conductor and an anchor bolt for fixing the surface layer plate to the outer wall are electrically connected by a grounding conductor, and the surface layer plate for a high-rise part of a high-rise building Attach this surface layer plate to the outer wall of the high-rise building with anchor bolts, and connect the end of the grounding conductor that is electrically connected to the reinforcing bars or steel frames of the building in advance to the anchor bolts. Is configured.
JP-A-5-161239 JP 7-264759 A JP-A-10-219938 JP 2001-86631 A

  When configuring the side lightning protection mechanism according to the revised JIS, for example, at the highest level of protection, the metal mesh must be configured on the side wall with a 5 m pitch or grid, and simply a metal strip or the like on the side wall. However, it is inevitable to influence the aesthetics of the facade of the building. Therefore, there is a strong demand for a side-wall lightning protection mechanism that does not impair the aesthetics.

  In addition, when installing a lightning conductor on the side wall of a building, of course, it is important how to ground it to the earth. For example, for the purpose of protection against side lightning In the above-mentioned Patent Document 4, as described above, after attaching the surface layer plate fixing the vertical lightning conductor to the outer wall of the high-rise building with the anchor bolt, it is electrically connected to the reinforcing bar or steel frame of the building. The operation | work which connects the edge part of the conducting wire for grounding to an anchor bolt is needed. The connection work between the lightning conductor and the grounding conductor is the same as in other Patent Documents 1 to 3.

Conventionally, after performing the operation of fixing the side wall portion to the housing in this way, it is necessary to perform the operation of grounding the lightning-receiving portion conductor.
The present invention aims to solve the above problems.

In order to solve the above-described problem, in the present invention, first, the lightning conductor is protruded and installed on the outer surface side of the non-metallic outer wall unit, and the outer wall unit is fixed to the steel frame member of the building. For this purpose, a side lightning protection outer wall unit is proposed in which a mounting bracket provided on the inner surface side and the lightning receiving part conductor are connected by a connecting conductor passing through the inside.

  In the above-described side wall lightning protection outer wall unit, the lightning receiving conductor can be formed in a linear shape or a point shape. In the latter configuration, the lightning conductor can be composed of a female screw member embedded on the outer surface side of the outer wall unit and a projecting member having a male screw portion screwed into the female screw member.

  Moreover, in this invention, it proposes installing a lightning-receiving part conductor along the edge which comprises a joint part in said side wall lightning protection outer wall unit.

  Further, in the present invention, in the above-mentioned side wall lightning protection outer wall unit, it is proposed that the sash of the outer wall unit constituting the continuous window or the single window is used as a lightning-receiving portion conductor and connected to the inner side mounting bracket with the connecting conductor. To do.

  Further, the present invention proposes that in the above-described side wall lightning protection outer wall unit, the linear lightning-receiving portion conductor can be connected in a link shape via a connecting conductor piece and configured to be long in series.

Further, in the present invention, in the building constituting the outer wall by fixing the mounting bracket of the outer wall unit to the steel frame member, the lightning-receiving conductor is protruded and installed on the outer surface side of the outer wall unit, and the mounting bracket and Are connected by a connecting conductor through the inside, and the lightning conductor on the outer surface side of the outer wall unit is grounded via the connecting conductor, mounting bracket, and steel frame member. We propose a side wall lightning protection mechanism.

In the present invention, the outer wall is connected to the lightning-receiving conductor and the lightning-receiving conductor that protrudes to the outer surface side of the outer wall on the field frame form of the outer wall in a reinforced concrete structure of the concrete-site casting method. Concrete is placed with the connecting conductor reaching the inner surface of the outer wall fixed, and the grounding conductor is connected between the inner surface of the connecting conductor and the main reinforcing bar that forms the nearest column or beam. We propose a lightning protection mechanism for side walls in buildings that are grounded.

  Further, the present invention proposes that in the above-mentioned side wall lightning protection mechanism, a bolt insertion member is provided on the inner surface side of the connecting conductor, a bolt is inserted into the bolt insertion member, and the grounding conductor is connected by a nut.

  In the present invention, the lightning-receiving portion conductor installed on the outer surface side of the outer wall unit is connected in advance by the outer wall unit mounting bracket and the connecting conductor, so when fixing the outer wall unit mounting bracket to the steel frame member, At that time, since the lightning conductor is grounded through the steel frame member, it is not necessary to perform dangerous grounding work separately from the installation work of the outer wall unit.

  Thus, in the building in which the side wall portion is configured by the outer wall unit of the present invention, the lightning strike from the side wall lightning occurs in the lightning receiving portion conductor installed on the outer surface side of the outer wall unit. It is possible to quickly flow to the ground through the connecting conductor, the mounting bracket, and the steel frame member, and therefore it is possible to prevent the side wall portion from being destroyed by lightning strike.

If the lightning-receiving conductors installed on the outer surface side of the outer wall unit are arranged along the joints of the adjacent outer wall units, lines other than the line due to the plate split are not generated, and a simple wall surface can be obtained. In this way, the lightning conductor is
By appropriately arranging in advance, it is possible to minimize damage to the facade image in terms of architectural design.

  The present invention can also be applied to a reinforced concrete structure whose outer wall is cast on the concrete site. In this case as well, the grounding can be performed with the minimum necessary work.

Next, embodiments of the side wall lightning protection outer wall unit and the side wall lightning protection mechanism of the present invention will be described with reference to the accompanying drawings.
1 to 3 conceptually show an embodiment of a side wall lightning protection outer wall unit and a side wall lightning protection mechanism according to the present invention. FIG. 1 is a perspective view of the outer wall unit, and FIG. Sectional drawing which shows the state which fixed to the steel frame member and comprised the side wall part, FIG. 3: is a perspective view which shows the external appearance of the building which fixed the outer wall unit and comprised the side wall part.

  As shown in these figures, according to the present invention, the outer wall unit 1 is provided with a lightning conductor 2 on the outer surface side o and a mounting bracket 3 on the inner surface side i. In this configuration, the metal fitting 3 is connected by a connecting conductor 4 through the inside. In these drawings, the lightning conductor 2 is installed in a state of protruding to the outer surface o of the outer wall unit 1, but it can also be installed as the same plane as the outer surface.

The outer wall unit 1 is made of a non-metallic material such as a PC board, and its surface finish is appropriate such as tile or stone. Further, the lightning conductor 2 may be disposed in a suitable position of the outer wall unit 1 in any of the vertical direction, the horizontal direction, and both directions. The lightning conductor 2 is, for example, copper: 35 mm ² or more (6 × 6), aluminum: 70 mm ² (9 × 9), iron: 50 mm ² (8 × 8) in accordance with the revised JIS. can do. However, the inside of () is a line and a flat type is also possible. And the protrusion length of the lightning-receiving part conductor 2 from the outer surface of the outer wall unit 1 can also be set suitably. Furthermore, the shape of the mounting bracket 3 is also appropriate.

  In the above configuration, as shown in FIG. 2, by performing the work of attaching the mounting bracket 3 of the outer wall unit 1 to the steel frame member 6 of the building 5, Thus, the lightning conductor 2 is grounded via the connection conductor 4, the mounting bracket 3, and the steel frame member 6. Needless to say, the joint portion 7 between the adjacent outer wall units 1 is subjected to joint treatment by an appropriate conventional method.

  Thus, as shown in FIG. 3, the side lightning protection mechanism can be configured by installing the lightning receiving conductors 2 in a mesh shape or parallel arrangement on the outer surface o of the outer wall of the building 5.

As described above, the position and direction in which the lightning conductor 2 is installed in the outer wall unit 1 are appropriate. Next, those embodiments will be described with reference to FIGS.
4 (a), 4 (b), and 4 (c) are explanatory views of a side wall portion made up of a large number of outer wall units 1 attached to a steel frame member in vertical and horizontal directions, as viewed from the outside. An example is shown in which one lightning conductor 2 is installed laterally on the joint 7 side of the outer wall unit 1 adjacent to the top and bottom of the object. On the other hand, (b) shows an example in which two lightning conductors 2 are arranged in the vertical direction on the joint 7 side of the outer wall unit 1 adjacent to the left and right of the building. Further, in (c), one lightning conductor and two lightning conductors 2 are arranged in the horizontal direction and the vertical direction respectively on the joint 7 side of the outer wall unit 1 adjacent to the top and bottom and left and right of the building. An example is shown.

  Next, in FIGS. 5A, 5B, and 5C, one lightning conductor 2 is installed laterally on the joint 7 side of the outer wall unit 1 that is adjacent to the top and bottom or left and right of the building. It is a principal part longitudinal cross-sectional view of an example, and while installing the lightning receiving part conductor 2 in the outer surface side of the upper end edge of the outer wall unit 1 of the lower side in the figure, the attachment metal fitting 3 provided in the inner surface side is connected conductor 4 is connected. Each has a different wall finish, (a) is a paint finish, (b) is a tiled finish, and numeral 8 indicates a tile. Moreover, (c) is a stone driving finish, and the code | symbol 9 has shown the stone material. Moreover, in (a)-(c), the code | symbol 10 is a sealing material, 11 is a backup material, 12 is a gasket, 13 is a refractory material.

  On the other hand, in FIGS. 6A, 6B, and 6C, two lightning conductors 2 are installed in the vertical direction on the joint 7 side of the outer wall unit 1 that is adjacent to the left or right or top and bottom of the building. It is a principal part cross-sectional view of an example, and respond | corresponds to Fig.5 (a), (b), (c), respectively. In these, the lightning receiving portion conductor 2 is installed on the outer surface side of the left and right end edges of the outer wall units 1 on both sides, and the mounting bracket 3 provided on the inner surface side is connected by the connecting conductor 4. Similar to the above, each has a different wall finish. Like FIG. 5, (a) is a paint finish, (b) is a tile driving finish, and numeral 8 indicates a tile. Moreover, (c) is a stone driving finish, and the code | symbol 9 has shown the stone material. Moreover, in (a)-(c), the code | symbol 10 is a sealing material, 11 is a backup material, 12 is a gasket, 13 is a refractory material.

  Next, FIGS. 7A, 7B, and 7C are cross-sectional views showing an installation example of the lightning-receiving conductor 2 at the corner portion of the side wall portion. In FIG. 7A, the outer wall unit 1 has the corner portion. It is configured as an equilateral member to be configured, and a single lightning-receiving portion conductor 2 is installed in the vertical direction on the outer surface side along this corner edge, and the inner side mounting bracket 3 is connected with the connecting conductor 4. Connected. Moreover, (b) has comprised the outer wall unit 1 as an unequal side member which comprises a corner part, and the other structure is the same as that of (a). Furthermore, (c) comprises the outer wall unit 1 as a corner-cutting type member facing in the orthogonal direction, and the lightning receiving section conductor 2 is installed on the facing edge of each outer wall unit 1. Two lightning conductors 2 are installed in the vertical direction. Other configurations are the same as (a) and (c). In the figure, reference numeral 14 denotes a pillar.

  5 (a), (b), (c), FIGS. 6 (a), (b), (c) and FIGS. 7 (a), (b), (c) Although the body 2 is installed in a state of projecting to the outer surface side o of the outer wall unit 1, it can also be installed as the same plane as the outer surface as described above.

Next, FIG. 8 shows another embodiment of the side wall lightning protection outer wall unit and the side wall lightning protection mechanism of the present invention, in which (a) is a front view seen from the outside, and (b) is a longitudinal sectional view.
In this embodiment, the outer wall unit 1 constitutes a horizontal continuous window 15, and the sash 16 of the horizontal continuous window 15 is connected to the mounting bracket 3 on the inner surface side by the connecting conductor 4 with the lightning conductor 2. Thus, a protection mechanism is configured.

  In this embodiment, since the sash 16 of the horizontal continuous window 15 is used as the lightning conductor 2, it is not necessary to install the lightning conductor 2 that is unnecessary in terms of architectural design, and the image of the facade is damaged. There is nothing at all.

  In addition, the outer wall unit 1 to which this protection mechanism is applied may constitute a single window (not shown) in addition to that constituting the horizontal continuous window 15 as shown in FIG.

  Next, FIGS. 9 and 10 show another embodiment of the side wall lightning protection outer wall unit and the side wall lightning protection mechanism of the present invention. FIG. 9 is a front view seen from the outside, and FIG. It is A sectional drawing. In this embodiment, the protection by the rotating sphere method using the point lightning receiving portion conductor 2 is intended instead of the mesh method using the linear lightning receiving portion conductor 2 as in the above embodiments. Is.

  That is, the outer wall unit 1 in this embodiment is a protruding member having a lightning conductor 2 having a female screw member 17 embedded in the outer surface o of the outer wall unit 1 and a male screw portion 18 screwed into the female screw member 17. 19. The female screw member 17 connects the mounting bracket 3 installed on the inner surface i of the outer wall unit 1 with the connecting conductor 4.

  Also in this embodiment, the electrical connection between the lightning conductor 2 and the steel frame member (not shown) is performed by attaching the mounting bracket 3 of the outer wall unit 1 to the steel frame member 6 of the building 5. After the work is completed, the protruding member 19 as the lightning conductor 2 is grounded via the female screw member 18, the connecting conductor 4, the mounting bracket 3, and the steel frame member, thereby forming a protection mechanism based on the rotating sphere method. Is done.

  Here, when the linear lightning conductor 2 is used, for example, as shown in FIG. 11, the linear lightning conductor 2 in one outer wall unit 1 passes through the connecting conductor piece 20. Can be connected in the form of a link to form a long series. In this case, the link-like connection is performed using the bolts 21, but the through hole and the female screw portion are connected to the lightning-receiving portion conductor 2 side so as to be drawn differently on the left and right sides in the drawing for convenience. You may comprise on either side of the conductor piece 20 for an object. Moreover, this connection part may be formed in the exterior of the outer wall unit 1, and may be formed in an inside.

  In addition, as described above, in FIG. 11, the linear lightning conductors 2 in one outer wall unit 1 are connected in a link shape via the connecting conductor piece 20. The lightning-receiving portion conductor 2 can be connected in a link shape via the connecting conductor piece 20 with the same configuration as in FIG. 11, and this operation can be performed during the outer wall sealing work.

  As described above, the linear lightning receiving portion conductor 2 is connected in a link shape via the connecting conductor piece 20 to form a series of long lightning receiving portion conductors 2. The occurrence of inconvenience due to the difference in the coefficient of thermal expansion with the partial conductor 2 can be prevented.

  Next, FIGS. 12 (a), (b) and (c) show another embodiment of the side wall lightning protection mechanism of the present invention, which is applied to a reinforced concrete structure where the outer wall is of a concrete spot casting system. (A) is a state in which concrete is cast on site, (b) is a cross-sectional view showing a state in which grounding is performed, and (c) is a grounding conductor.

  In this side wall lightning protection mechanism, the lightning receiving section conductor 2 and the connecting conductor 4 connected to the lightning receiving section conductor 2 and reaching the inner surface side of the outer wall 22 are fixed to the field frame form 23 of the outer wall 22. In this state, the concrete 24 is placed, and the grounding conductor 28 is connected between the inner surface side of the connecting conductor 4 and the main reinforcing bar (not shown) constituting the nearest column or beam and grounded. It is a thing. More specifically, a bolt insertion member 25 such as a female screw member is provided on the inner surface side of the connecting conductor 4, a bolt 26 is inserted into the bolt insertion member 25, and a grounding conductor 28 is connected to the bolt 26 with a nut 27. Connected.

  As described above, the present invention can also be applied to a reinforced concrete structure whose outer wall is of a concrete spot casting type, and in this case as well, the grounding can be performed with the minimum necessary work.

  As described above, according to the present invention, in a building that constitutes the outer wall by fixing the mounting bracket of the outer wall unit to the steel frame member, the lightning conductor is installed on the outer surface side of the outer wall unit and grounded to the ground. Can protect against side wall lightning specified in the revised JIS A4201-2003, and the lightning protection equipment based on the Building Standards Law will be revised in the future to be installed by this revised JIS. The case can be adapted.

  In the present invention, since the lightning conductor conductor installed on the outer surface side of the outer wall unit is connected in advance by the outer wall unit mounting bracket and the connecting conductor, the outer wall unit mounting bracket is fixed to the steel frame member. At that time, since the lightning conductor is grounded through the steel frame member, it is not necessary to perform dangerous grounding work separately from the installation work of the outer wall unit.

  Further, in the present invention, if the lightning conductor conductor projecting on the outer surface side of the outer wall unit is disposed along the joint portion of the adjacent outer wall unit, a line other than the line by the plate split does not occur, and a simple wall surface can do.

  The present invention can also be applied to a reinforced concrete structure whose outer wall is cast on the concrete site. In this case as well, the grounding can be performed with the minimum necessary work.

It is a perspective view which shows notionally the Example of the outer wall unit by this invention. It is sectional drawing which shows the state which fixed the outer wall unit of FIG. 1 to the steel frame member of a building, and comprised the side wall part. It is a perspective view which shows the external appearance of the building which fixed the outer wall unit and comprised the side wall part. It is explanatory drawing which looked at the side wall part which consists of many outer wall units 1 attached to the steel frame member vertically and horizontally from the outside. It is a principal part longitudinal cross-sectional view of the example which installed the 1 lightning-receiving part conductor in the horizontal direction on the joint part side of the outer wall unit adjacent to the upper and lower sides of a building. It is a principal part cross-sectional view of the example which installed two lightning-receiving part conductors in the vertical direction on the joint part side of the outer wall unit adjacent to the right and left of a building. It is a cross-sectional view which shows the example of installation of the lightning-receiving part conductor 2 in the corner part of a side wall part. The other example of the side wall lightning protection outer wall unit and side wall lightning protection mechanism of this invention is shown, (a) is the front view seen from the outside, (b) is a longitudinal cross-sectional view. It is the front view seen from the outside which shows the further another Example of the side wall lightning protection outer wall unit and side wall lightning protection mechanism of this invention. FIG. 10 is a sectional view taken along line AA in FIG. 9. It is explanatory drawing which shows the connection method of a linear lightning-receiving part conductor. FIG. 2 shows another embodiment of the side wall lightning protection mechanism according to the present invention, in which (a) is a state where concrete is cast in the field, (b) is a cross-sectional view showing a state of grounding, and (c) is for grounding. It shows a conducting wire.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Outer wall unit 2 Lightning-receiving part conductor 3 Mounting bracket 4 Connection conductor 5 Building 6 Steel frame member 7 Joint part 8 Tile 9 Stone material 10 Sealing material,
11 Backup Material 12 Gasket 13 Refractory Material 14 Pillar 15 Lateral Window 16 Sash 17 Female Threaded Member 18 Male Threaded Part 19 Projecting Member 20 Conductor Piece 21 for Connection 21 Bolt 22 Outer Wall 23 Field Frame Form 24 Concrete 25 Bolt Inserting Member 26 Bolt 27 Nut 28 Grounding wire

Claims (10)

A lightning-receiving conductor is protruded and installed on the outer surface side of the non-metallic outer wall unit, and the mounting bracket provided on the inner surface side for fixing the outer wall unit to the steel frame member of the building , sidewall lightning protection outer wall unit, characterized in that between the Bushirube collector, connected by the connecting conductors through the interior. The side lightning protection outer wall unit according to claim 1, wherein the lightning receiving portion conductor is formed in a linear shape. The side lightning protection outer wall unit according to claim 1, wherein the lightning receiving portion conductor is configured in a dot shape. 4. The side wall lightning according to claim 3, wherein the lightning receiving portion conductor is composed of a female screw member embedded on the outer surface side of the outer wall unit and a protruding member having a male screw portion screwed into the female screw member. Protective outer wall unit. The side wall lightning protection outer wall unit according to claim 1, wherein a lightning-receiving portion conductor is installed along an edge constituting the joint portion. 2. The side wall lightning protection outer wall unit according to claim 1, wherein a sash of an outer wall unit constituting a continuous window or a single window is used as a lightning-receiving portion conductor, and is connected by an inner side mounting bracket and a connecting conductor. The side lightning protection outer wall unit according to claim 1, wherein the lightning-receiving section conductors in a linear shape can be connected to each other in a link shape via a connecting conductor piece and can be configured to be long in series. In the building that constitutes the outer wall by fixing the mounting bracket of the outer wall unit to the steel frame member, install the lightning receiving conductor projecting on the outer surface side of the outer wall unit, and between the mounting bracket, Side wall lightning protection mechanism in a structure in which the lightning receiving conductor on the outer surface side of the outer wall unit is grounded via the connecting conductor, the mounting bracket, and the steel frame member. . In a reinforced concrete structure where the outer wall is cast in place on the concrete site, the lightning receiving conductor that protrudes to the outer surface side of the outer wall on the field frame form of the outer wall, and the inner surface side of the outer wall connected to the lightning receiving conductor The concrete is placed in a state where the connecting conductor is fixed, and the grounding conductor is connected between the inner surface of the connecting conductor and the main reinforcing bar that forms the nearest column or beam for grounding. Side wall lightning protection mechanism in the building. The side lightning protection mechanism in a building according to claim 9, wherein a bolt insertion member is provided on the inner surface side of the connecting conductor, a bolt is inserted into the bolt insertion member, and a grounding conductor is connected by a nut.

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