JP2014185453A - Exterior wall structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an exterior wall structure capable of reducing a load of deformation when a skeleton of a building has inter-layer deformation.SOLUTION: An exterior wall structure includes: a fitting part 12 which is provided on the back of an exterior wall panel 1, holds the exterior wall panel 1 in a panel surface outward direction and fits the exterior wall panel 1 to a skeleton of a building movably in a panel in-surface direction; a fastener 13 which is provided at a position close to a horizontal center of the exterior wall panel 1 in vertical arrangement to straddle between a lower edge and an upper edge of the back; a support part 14 which transmits the weight of the exterior wall panel 1 to the skeleton of the building on the back side of the exterior wall panel 1; interval adjusting members 15A and 15B which adjust an interval between the exterior wall panel 1 in vertical arrangement and the fastener 13; and fastening members 16A and 16B which bring the back of the exterior wall panel 1 into contact with the interval adjusting members 15A and 15B, respectively.

Description

  The present invention relates to an outer wall structure in which an outer wall panel is fixed to a building frame composed of column beams of a building.

  Patent document 1 is disclosing the outer wall panel joining structure which joins an outer wall panel to the housing of a building with a fastener. The fastener includes a panel connecting portion to which a lower end portion of the upper outer wall panel and an upper end portion of the lower outer wall panel are bolted. Moreover, this outer wall panel joining structure is provided with a level adjusting bolt for adjusting the level of the outer wall panel.

  Patent document 2 is disclosing the structure of the joint joint part between outer wall panels. Specifically, a pin fitting hole is provided in the indoor side lower end surface part of the upper outer wall panel, and a fitting pin whose upper end is fitted in the pin fitting hole is provided in the lower part on the indoor upper end surface part of the lower outer wall panel. An adjustment nut is provided that is installed in an embedded state, is fitted to the fitting pin, and is adjusted to adjust the joint width by lifting the indoor lower end surface portion of the upper outer wall panel by adjusting the screwing height.

JP 2006-97351 A JP 2010-242324 A

  However, the outer wall panel joint structure of Patent Document 1 has a problem in the response force when the building frame undergoes interlayer deformation. That is, in the outer wall panel joint structure, since the outer wall panel is fixed to the building frame by the left and right fixing points, as shown in FIG. 5, when the beams of each layer of the building move horizontally during an earthquake, There is a problem that either one of the left and right fixed portions is fixed and the other is largely moved, and the deformation load of the outer wall panel is increased.

  On the other hand, in the structure of the above-mentioned Patent Document 2, as shown in FIG. 6, a panel attachment 202 for attaching the outer wall panel 200 to the beam 201 as a building frame is provided at the upper part of the back surface of the outer wall panel 200. Yes. The panel attachment 202 has a loose hole 204 into which the attachment bolt 203 is fitted, and the outer wall panel 200 is attached with the attachment bolt 203 fitted into the loose hole 204. In this attached state, a washer-like displacement absorber 205 made of an elastic body is located between the bolt head of the mounting bolt 203 and the bolt pressing surface of the panel fixture 202.

  Further, a pin fitting hole 206 extending upward is provided in the indoor side lower end surface portion of the outer wall panel 200, and a pin fitting of the indoor side lower end surface portion of the upper outer wall panel 200 is provided in the indoor side upper end surface portion of the outer wall panel 200. A fitting pin 207 to be fitted into the fitting hole 206 is installed in the embedded state at the bottom. A male screw is formed on the peripheral surface of the fitting pin 207, and an adjustment nut 208 is screwed to a portion of the fitting pin 207 protruding from the indoor upper end surface portion.

  However, when the pin fitting hole 206 and the fitting pin 207 of the outer wall panel 200 arranged above and below are provided, due to the positional accuracy, warpage of the outer wall panel, and the like, the entrance / exit dimension between the upper and lower sides of the outer wall panel 200 is high. There is a risk that it will not fit within the specified dimensions.

  Further, when the displacement absorber 205 is provided, even if the beams of each layer move horizontally during an earthquake, the displacement due to this movement is absorbed by the displacement absorber 205, and the deformation load of the outer wall panel 200 is reduced. However, when the weight of the outer wall panel 200 is heavy, the displacement absorber 205 may sink and deform due to a creep phenomenon.

  In view of the above circumstances, the present invention can reduce the burden of deformation of the outer wall panel when the casing is deformed between layers, and can easily fit the entrance / exit dimensions of the building of the outer wall panel arranged above and below within the specified dimensions. It is an object to provide a structure.

  In order to solve the above problems, the outer wall structure of the present invention is provided on a plurality of outer wall panels arranged above and below, and on the back surface of the outer wall panel, and holds the outer wall panel in the panel surface outer direction. An attachment portion that is attached to the building frame so as to be able to move inward, and a fastener that is provided across the lower and upper edges of the back surface at a position near the horizontal center of the vertically arranged outer wall panel; A support part that is inserted through the fastener and contacts the housing of the building, and transmits the weight of the outer wall panel to the building housing on the back side of the outer wall panel, and the outer wall panel that is inserted through the fastener and arranged above and below. A back surface of the upper and lower outer wall panel that is inserted into the fastener and adjusts the distance between the upper and lower outer wall panel and the fastener. Are fastened respectively, characterized in that the rear surface of the exterior wall panel and a lower fastening member and the upper fastening members against respective said spacing adjusting member.

  If it is said structure, since the said fastener is provided in the position near the horizontal direction center of the said outer wall panel, The weight of the said panel main-body part adds to the housing of the said building with the said support part provided in this fastener. When the beams of each layer of the building move horizontally due to the earthquake, the outer wall panel rotates in the panel plane with the support portion as a fulcrum, and the left and right position displacement of the outer wall panel is shared by the left and right Become smaller. Thereby, the deformation | transformation burden of the said outer wall panel when the frame of the said building carries out interlayer deformation by generation | occurrence | production of an earthquake can be made small. Further, even when the weight of the outer wall panel increases, the creep phenomenon does not occur because it is supported by the support portion. In addition, an interval adjustment member that adjusts an interval between the upper and lower outer wall panels and the fastener is provided, and a lower fastening member and an upper fastening member that respectively apply the back surface of the outer wall panel to the interval adjustment member. Since it is provided, it is possible to eliminate the shift of the upper and lower edges of the outer wall panel arranged above and below.

  The fastener may be provided at two locations, and each fastener may be provided at a position that is closer to the center of the distance of 1/4 or more of the lateral width from the lateral edge of the outer wall panel. According to this, the support of the outer wall panel on the housing is stably performed by the two support portions provided on the two fasteners.

  The attachment portion may be provided at two locations outside the fastener. Or the said attaching part may be provided in one place or two places inside the said two fasteners.

  The support portion may include a height adjustment function for adjusting the height of the outer wall panel. According to this, height adjustment of the said panel main-body part can be performed with the said support part. Further, if the fastener is provided at two places and the height adjustment can be performed by the two support portions, the height adjustment can be easily performed on each of the left and right sides.

  Moreover, you may attach the said attaching part to the starting surface part of the ruler angle provided in the housing of the said building. According to this, the outer wall structure which fastens the outer wall panel in the form of a curtain wall using the ruler angle is realized.

  If it is this invention, there exist various effects, such as the deformation | transformation burden when the frame of a building carries out interlayer deformation can be made small.

FIG. 4A is a cross-sectional view showing a schematic structure of a mounting portion in the outer wall structure of the embodiment of the present invention, and FIG. 4B is a cross-sectional view showing a schematic structure of a place where a fastener is arranged. . It is explanatory drawing of the front view which showed schematic structure of the outer wall structure of FIG. It is explanatory drawing which showed the displacement of the outer wall panel of the outer wall structure of FIG. It is explanatory drawing which showed the fastener of the form different from the fastener used with the outer wall structure of FIG. 1 in three dimensions. It is explanatory drawing which showed the displacement of the conventional outer wall panel. It is explanatory drawing which showed the conventional outer wall structure.

Embodiments of the present invention will be described below with reference to the accompanying drawings.
In the outer wall structure illustrated in FIGS. 1A and 1B, a beam 2 is shown as a structural frame of a building. A floor plate 3 is provided on the flange 2 a of the beam 2. An extension member 21 having an L-shaped cross section is fixed to the lower surface of the flange 2a. A ruler angle 22 having two surface portions in an L shape is provided in a state where one surface portion is joined to the end portion on the extension member 21 and the other surface portion is raised outward. .

  The outer wall panel 1 in the outer wall structure has, for example, a decorative surface material such as a tile on the outer surface of the panel main body portion 11 made of a molded product of glass fiber reinforced concrete (GRC), and the panel main body portion 11 includes a first The nut portion 11a, the second nut portion 11b, and the third nut portion 11c are embedded. Each nut part 11a, 11b, 11c is formed with a female screw part. A primary gasket 4 and a secondary gasket 5 located on the indoor side are provided on the lower surface of the outer wall panel 1 disposed on the upper side and the upper end portion of the outer wall panel 1 disposed on the lower side.

  The first nut portion 11 a is provided at each of the left and right positions on the upper side of the back surface of the panel body portion 11. And the attaching part 12 is provided in the said 1st nut part 11a.

  As shown in FIG. 2, the mounting portion 12 includes a bolt 12a and a lightning plate (Z plate) 12b. The lightning plate 12b has a loose hole 12c that is long in the vertical direction. The bolt 12a is screwed into the female screw portion of the first nut portion 11a through the screw hole through the loose hole 12c. A rising surface portion (the other surface portion) of the ruler angle 22 is located between the back surface of the panel body portion 11 and the lightning plate 12b. A plate member may be provided between the back surface of the panel body 11 and the ruler angle 22.

  By tightening the bolt 12a, the back surface of the panel body 11 is pressed against the rising surface portion (the other surface portion) of the ruler angle 22 by the lightning plate 12b, and the outer wall panel 1 is fixed to the ruler angle 22 It is fixed (locked) to the beam 2 via. That is, the attachment part 12 is attached to the building frame so that the panel main body part 11 is held in the panel surface outer direction and can be moved in the panel surface inner direction.

  Further, two fasteners 13 are provided across the lower edge and the upper edge of the back surface at a position near the center in the horizontal direction of the outer wall panel 1 arranged vertically. Each fastener 13 includes, for example, a vertical plate portion 13a that faces the back surface of the outer wall panel 1, a bottom plate portion 13b that faces the extension member 21, and left and right edge arrangements that connect and reinforce the vertical plate portion 13a and the bottom plate portion 13b. The two reinforcing plate portions. In this embodiment, the lateral width of the outer wall panel 1 is 900 mm, and the arrangement interval of the two fasteners 13 arranged on the center side in the left-right direction is 300 mm. That is, the two fasteners 13 are provided at a position closer to the center of the distance of 1/3 or more of the lateral width from the lateral edge of the outer wall panel. Of course, this is merely an example, and the two fasteners 13 may be provided at a position closer to the center of the distance of 1/4 or more of the lateral width from the lateral edge of the outer wall panel.

  The fastener 13 is brought into contact with the extension member 21 in the beam 2 that is inserted into the fastener 13 and becomes a housing of the building, and the extension member 21 receives the weight of the outer wall panel 1 on the back side of the outer wall panel 1. The support part 14 which transmits to is provided. In this embodiment, it consists of a bolt screwed into a screw hole formed in the bottom plate portion 13 b of the fastener 13. For this reason, the said support part 14 is provided with the height adjustment function which adjusts the height of the said outer wall panel 1. FIG.

  Further, the fastener 13 is inserted through the fastener 13 to come into contact with the back surface of the upper and lower outer wall panel 1, and the interval between the upper and lower outer wall panel 1 and the vertical plate portion 13 a of the fastener 13 is set. A lower interval adjusting member 15A and an upper interval adjusting member 15A to be respectively adjusted are provided. In this embodiment, the spacing adjusting members 15A and 15B are formed of bolts respectively screwed into two upper and lower screw holes formed in the vertical plate portion 13a of the fastener 13. For example, instead of the lower spacing adjustment member 15A, a spacer fitted on a lower fastening member 16A described later can be used as the lower spacing adjustment member. The spacer is thicker than the thickness of the rising surface portion of the ruler angle 22.

  The fastener 13 is inserted into the fastener 13 and fastened to the back surface of the upper and lower outer wall panel 1, and the lower fastening member applies the back surface of the outer wall panel 1 to the spacing adjusting members 15A and 15B. 16A and the upper side fastening member 16B are provided. In this embodiment, the lower fastening member 16A and the upper fastening member 16B are made of bolts. The lower fastening member 16A and the upper fastening member 16B pass through the vertically long long holes (loose holes) 13c and 13d formed at two positions above and below the vertical plate portion 13a in the fastener 13 and are arranged in the lower position. The second nut portion 11b embedded in the back surface of the outer wall panel 1 and the third nut portion 11c embedded in the back surface of the outer wall panel 1 arranged above are screwed together.

  The outer wall panel 1 is assembled by, for example, screwing the spacing adjustment member 15A so that the lower outer wall panel 1 is set at a specified out-of-plane direction position while the lower fastening member 16A is loosened, Thereafter, the lower fastening member 16A is tightened. And the bolt which is the said support part 14 is operated, and the height of the said outer wall panel 1 is adjusted. Thereafter, the outer wall panel 1 is fixed to the building frame by the bolts 12a and the lightning plate 12b in the mounting portion 12. And about the lower edge of the upper outer wall panel 1 arrange | positioned above the lower outer wall panel 1 fixed to the building frame in this way, using the said space | interval adjustment member 15B and the upper side fastening member 16B, the said The entry / exit of the lower edge of the upper outer wall panel 1 is matched with the entry / exit of the lower outer wall panel 1.

  If it is said structure, the said fastener 13 is provided in the position near the horizontal direction center of the said outer wall panel 1, The weight of the said outer wall panel 1 is the said building's own weight by the said support part 14 provided in this fastener 13. When the beams 2 of each layer of the building move horizontally due to an earthquake because of the addition to the frame, the outer wall panel 1 rotates in the panel plane direction with the support portion 14 as a fulcrum as shown in FIG. However, the left and right positional displacement of the outer wall panel 1 is shared by the left and right and becomes smaller. Thereby, the deformation | transformation burden of the said outer wall panel 1 when the frame of the said building deform | transforms between layers by generation | occurrence | production of an earthquake can be made small. Further, even when the weight of the outer wall panel 1 increases, the creeping phenomenon does not occur because the outer wall panel 1 is supported by the support portion 14. Further, the space adjusting members 15A and 15B for adjusting the space between the vertically arranged outer wall panel 1 and the fastener 13 are provided, and the back surface of the outer wall panel 1 is provided on the space adjusting members 15A and 15B, respectively. Since the lower fastening member 16A and the upper fastening member 16B are provided, it is possible to eliminate the shift of the upper and lower edges of the outer wall panel 1 arranged in the vertical direction.

  Moreover, since the fitting pin provided by the conventional structure becomes unnecessary, the secondary gasket 5 can be easily attached.

  When the fasteners 13 are provided at two locations, and each fastener 13 is provided at a position close to the center of the distance from the lateral edge of the outer wall panel 1 by 1/4 (preferably 1/3) of the lateral width. The support of the outer wall panel 1 on the housing is stably performed by the two support portions 14 provided on the two fasteners 13.

  In the above embodiment, the attachment portion 12 is provided at two locations outside the fastener 13, but the present invention is not limited to this, and the attachment portion 12 is provided at one location or two inside the two fasteners 13. It may be provided at a location.

  When the support portion 14 has a height adjusting function for adjusting the height of the outer wall panel 1, the height of the outer wall panel 1 can be adjusted by the support portion 14. Further, if the fastener 13 is provided at two locations and the height adjustment can be performed by the two support portions 14, the height adjustment can be easily performed on each of the left and right sides.

  Moreover, if it is the structure which attached the said attachment part 12 to the starting surface part of the ruler angle 22 provided in the housing of the said building, the outer wall which fastens the said outer wall panel 1 in a curtain wall form using the said ruler angle 22 A structure is realized.

  Further, the mounting portion 12 can be provided on the lower side of the back surface of the outer wall panel 1.

  Moreover, you may use the fastener 13A shown in FIG. In the fastener 13A, the spacing adjustment member 15A is on the lower side in the arrangement relationship between the spacing adjustment member 15A and the lower fastening member 16A, and the spacing adjustment in the arrangement relationship between the spacing adjustment member 15B and the upper fastening member 16B. The member 15B is on the bottom. The upper fastening member 16B is not a long hole but is passed through a notch 13e formed at the upper edge.

  As mentioned above, although embodiment of this invention was described with reference to drawings, this invention is not limited to the thing of embodiment shown in figure. Various modifications and variations can be made to the illustrated embodiment within the same range or equivalent range as the present invention.

DESCRIPTION OF SYMBOLS 1 Outer wall panel 11 Panel main-body part 11a 1st nut part 11b 2nd nut part 11c 3rd nut part 12 Attachment part 12a Bolt 12b Lightning plate 12c Loose hole 13, 13A Fastener 13a Vertical board part 13b Bottom board part 14 Support part 15A, 15B Spacing adjustment member 16A Lower fastening member 16B Upper fastening member 2 Beam 22 Ruler angle

Claims (6)

A plurality of outer wall panels arranged above and below;
A mounting portion that is provided on the back surface of the outer wall panel and is attached to the building housing so as to hold the outer wall panel in the panel surface outer direction and enable movement in the panel surface inner direction;
A fastener provided across the lower edge and the upper edge of the back surface at a position near the center in the horizontal direction of the outer wall panel arranged above and below;
A support portion that is inserted through the fastener and contacts the housing of the building, and transmits the weight of the outer wall panel to the building housing on the back side of the outer wall panel;
An interval adjusting member that is inserted through the fastener and contacts the back surface of each of the upper and lower outer wall panels, and adjusts the interval between the upper and lower outer wall panels and the fastener;
An outer wall, comprising: a lower fastening member and an upper fastening member that are inserted through the fastener and fastened to the back surfaces of the upper and lower outer wall panels, and that respectively contact the back surfaces of the outer wall panels with the spacing adjusting members. Construction.   2. The outer wall structure according to claim 1, wherein the fasteners are provided at two locations, and each fastener is provided at a position closer to the center of the distance of ¼ or more of the lateral width from the lateral edge of the outer wall panel. The outer wall structure characterized by   The outer wall structure according to claim 1 or 2, wherein the attachment portion is provided at two locations outside the fastener.   3. The outer wall structure according to claim 2, wherein the attachment portion is provided at one or two positions inside the two fasteners.   The outer wall structure according to any one of claims 1 to 4, wherein the support portion has a height adjusting function for adjusting a height of the outer wall panel.   The outer wall structure according to any one of claims 1 to 5, wherein the attachment portion is attached to a rising surface portion of a ruler angle provided in a housing of the building.

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