JP5892781B2 - Curtain wall type outer wall structure - Google Patents

Description

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

  Conventionally, in the curtain wall type outer wall structure, the outer wall panel is fixed to the structural frame composed of column beams by fixing the upper end portion and the lower end portion of the outer wall panel to the beam through hardware.

  In this curtain wall type outer wall structure, when the frame is deformed between layers due to an earthquake, etc., the outer wall panel rotates using vertical and horizontal clears provided on the hardware, so that the deformation of the outer wall panel itself is suppressed and damaged. It has a structure that avoids.

Japanese Patent Laid-Open No. 10-072886

  However, since the wind pressure applied to the outer wall panel is entirely borne by the frame that is the structural material of the outer wall panel, the distance between the beams provided at each level is separated, so the section of the vertical frame in the height direction is increased. There was a problem that the cost of the frame member would increase. Furthermore, since the outer peripheral dimension of the building is increased by increasing the cross section of the frame, there is a problem in terms of site correspondence.

  On the other hand, there has also been proposed an outer wall structure in which the outer wall panel is placed inside a structural frame made of column beams and the frame of the outer wall panel is fixed to the column beam. However, when the frame is deformed between layers, force is applied to the outer wall panel. In some cases, the outer wall panel may be damaged. In addition, since the panel height is limited, there are many restrictions on the plan, and it is difficult to remove the outer wall panel during renovation.

  In view of the above problems, an object of the present invention is to provide a curtain wall type outer wall structure capable of reducing the cross-sectional shape of the frame of the outer wall panel.

The above problem is a curtain wall type outer wall structure in which an outer wall panel is suspended on the outdoor side of a structural frame composed of column beams,
The outer wall panel has a frame body composed of a vertical frame and a horizontal frame, respectively,
A column side contact portion that contacts the side surface of the column;
An outer wall panel abutting portion that abuts a side surface of the vertical frame of the outer wall panel;
The vertical frame of the outer wall panel becomes the column of the structural frame by the outer wall panel support material having a substantially Z-shaped cross section consisting of the connecting portion that connects the column side contact portion and the outer wall panel contact portion and contacts the indoor side surface of the vertical frame. It is solved by an outer wall structure characterized by being suspended.

  In this outer wall structure, the outer wall panel is realized in the form of a curtain wall, attached to the structural frame composed of column beams, and the vertical frame of the outer wall panel is suspended on the column of the structural frame by the outer wall panel support material. Therefore, even if it is a curtain wall type outer wall structure that bears all the wind pressure with the outer wall panel frame, compared with the case where the outer wall panel is installed between the beams that are spaced apart due to the height of the building floor, The rigidity of the outer wall panel frame attached between the columns may be small, and the cross-sectional dimension of the outer wall panel frame can be set small. And since the cross-sectional dimension of the outer wall panel frame can be reduced, it is possible to design economically, as well as to reduce the space of the frame material and to secure the space for filling the heat insulating material. .

  In particular, the column side contact portion that contacts the side surface of the column, the outer wall panel contact portion that contacts the side surface of the vertical frame of the outer wall panel, the column side contact portion and the outer wall panel contact portion are connected, and the vertical frame This is realized by the vertical frame of the outer wall panel being suspended from the pillar of the structural frame by the outer wall panel support material having a substantially Z-shaped cross section consisting of a connecting portion that contacts the indoor side surface of the outer wall. In addition to being detachable, by changing the dimensions of the outer wall panel support material, the outer wall surface can be a partially projecting outer wall surface that projects outward.

  Moreover, since the outer wall panel is partially supported by the outer wall panel support material, the thermal bridge can be reduced, and further, a heat insulating layer is provided outside the structural frame, and the heat insulating layers of the respective outer wall panels are made continuous. Thus, the heat insulation performance can be improved.

  In the outer wall structure, the outer wall panel support member may be fixed to the vertical frame of the outer wall panel at the outer wall panel abutting portion and detachably suspended from the column of the structural frame at the column side surface abutting portion.

  Since the outer wall panel support is fixed to the vertical frame of the outer wall panel and is detachably suspended from the column, the outer wall panel supports the wind pressure received by the outer wall panel and the transmission of the load of the outer wall panel itself to the column. It can be adjusted by the balance between the material and the pillar.

Furthermore, in the outer wall structure, the outer wall panel is suspended by at least two or more outer wall panel support members in the vertical direction with respect to the pillar of the structural frame,
The lowermost outer wall panel support member may transmit the vertical load of the outer wall panel to the column, and the remaining outer wall panel support members may not transmit the vertical load of the outer wall panel to the column.

  The outer wall panel is suspended by at least two or more outer wall panel support members in the vertical direction with respect to the column of the structural frame, and only the lowermost outer wall panel support member transmits the vertical load of the outer wall panel to the column. Therefore, the axial load on the column is limited because the portion of the column of the structural frame where the axial force is applied is limited to the range where the outer wall panel support material at the lowest end is suspended from the lower end of the column. On the other hand, since the load bearing range of the column is limited to the lower part, the buckling strength of the column can be increased, the sectional shape of the column can be reduced, and an economical design can be performed.

  In the outer wall structure, the outermost wall support member at the lowermost end may be provided with a retaining metal fitting for preventing the outer wall panel from coming off from the pillar.

  Even though the outer wall panel is suspended from the pillar via the outer wall panel support material, the outermost wall panel support material at the lowermost end is provided with a retaining hardware that prevents the outer wall panel from coming off from the pillar. Therefore, even when there is a vertical movement during an earthquake or the like, the vertical movement of the outer wall panel can be prevented, and the outer wall panel can be prevented from falling off.

  Moreover, in this outer wall structure, it is preferable that adjacent outer wall panels are continuous via respective outer wall panel supporting members that fix the outer wall panel to the pillar.

  Since the adjacent outer wall panels are arranged consecutively via the outer wall panel support material, the distance between the outer wall panels is kept constant by the outer wall panel support material, and the joint width between the outer wall panels is stabilized. It can be.

  Since the present invention is as described above, it is possible to provide a curtain wall type outer wall structure capable of reducing the cross-sectional shape of the frame of the outer wall panel.

FIG. 1 (a) is a cross-sectional plan view showing the outer wall structure according to the first embodiment of the present invention. FIG. 2 (b) is a cross-sectional side view taken along line AA of FIG. ) Is a partially enlarged side view of FIG. FIG. 1 (a) is a front view showing an outer wall structure composed of a column beam to which an outer wall panel is attached, and FIG. 2 (b) is a sectional view taken along line BB of FIG. FIG. 1 (a) is a partially enlarged perspective view showing an attachment state of the outer wall panel to the structural housing, and FIG. 2 (b) is a cross-sectional plan view showing a column of the structural housing. It is a cross-sectional top view which shows the attachment condition of an adjacent outer wall panel. Fig. (A) is a cross-sectional front view showing the state of attachment of the outer wall panel support material to the outer wall panel locking body other than the lowermost end, and Fig. (B) is the outer wall panel support material to the lowermost outer wall panel locking body. It is a cross-sectional front view which shows the attachment condition. Fig. (A) is a perspective view showing the use situation of the retaining hardware, Fig. (B) is a perspective view showing the retaining hardware, and Fig. (C) is a perspective view showing the outer wall panel support. (D) and (e) are cross-sectional front views showing the attachment state of the retaining hardware and the outer wall panel support. It is a partial cross section side view which shows the transmission condition of the load from an outer wall panel to the pillar of a structural frame. It is a cross-sectional top view which shows the 2nd Embodiment of this invention.

  Next, embodiments of the present invention will be described with reference to the drawings.

  In the outer wall structure 1 according to the first embodiment of the present invention shown in FIGS. 1 and 2, 2 is an outer wall panel, 3 is an outer wall panel support member, 4 is a pillar of the structural housing, and 5 is a beam of the structural housing.

  As shown in FIG. 2, the outer wall panel 2 is provided on the outdoor side of a structural frame composed of columns 4 and 4 arranged in the vertical direction on the left and right sides and beams 5 and 5 arranged in the horizontal direction on the upper and lower sides. Suspended in curtain wall form. Here, the upper and lower beams 5 and 5 are made of H-shaped steel made of a web connecting the upper flange, the lower flange, and the upper and lower flanges, and the left and right columns 4 and 4 are made of C-shaped steel. The shape of the beam is not limited, and the lower beam may be a concrete foundation.

  The outer wall panel 2 is an outer wall panel frame in which a frame body is constituted by left and right vertical frames 6 and 6 made of channel steel composed of a web connecting flanges and upper and lower horizontal frames 7 and 7 also made of channel steel. On one side, a plate-like outer heat insulating material 8 made of urethane foam, a base frame 9 extending in the vertical direction disposed at the end of the outer heat insulating material, and the outer heat insulating material 8 and the base frame 9 are interposed. The outer wall surface material 10 is fixed to the outer wall panel frame. Reference numeral 11 denotes a ventilation layer extending in the vertical direction, which is constituted by the outer heat insulating material 8, the base bar 9, and the outer wall surface material 11. Further, 12 is a fiber-based heat insulating material filled in the outer wall panel frame, and 13 is a moisture-permeable waterproof sheet for holding the fiber heat insulating material 12 in the outer wall panel frame.

  As shown in FIGS. 1 (b) and 3 (b), the web 6a of the vertical frame 6 is provided with holes 14 for fixing the outer wall panel support material 3 at predetermined intervals, and the inner side 6b of the vertical frame. A nut 15 is attached so as to be concentric with the hole 14.

  As shown in FIG. 1 and FIG. 3A, the outer wall panel support 3 is a column side abutting portion 3 a that abuts against a side surface in the wall surface direction of the column 4, and a side surface that is a web portion of the vertical frame 6 of the outer wall panel 2. The outer wall panel abutting portion 3b that abuts with the column side surface abutting portion 3a and the outer wall panel abutting portion 3b are connected to both the indoor and outdoor side surfaces of the column 4 and the side surface that is the flange portion of the vertical frame 6. It is a support member having a substantially Z-shaped cross section, which is composed of a connecting portion 3c that abuts.

  The outer wall panel abutting portion 3b of the outer wall panel support member 3 is provided with a hole 3d through which the shaft portion 16b of the countersunk bolt 16 is inserted and engaged with the head portion 16a. The hole 14 and the nut provided in the vertical frame 6 The outer wall panel support 3 is fixed to the vertical frame 6 of the outer wall panel 2 by fixing the countersunk bolt 15 to the outer wall panel support 3.

  As shown in FIG. 4, the adjacent outer wall panels 2 and 2 are connected to each other through the outer wall panel support members 3 and 3 fixed to the vertical frames 6 and 6, respectively. In other words, between the vertical frames 6 and 6 of the outer wall panels 2 and 2, the outer wall panel abutting portions 3 b of the outer wall panel support members 3 and 3 are fixed to the vertical frames 6 and 6. Since it is ensured by the thickness of 3b, the head 16a of the countersunk bolt 16 that fixes the outer wall panel support member 3 to the vertical frame 6 does not protrude out of the surface of the outer wall panel support member 3, and fits within the plate thickness. As described above, the hole 3d through which the countersunk bolt 16 is inserted is tapered according to the head 16a of the countersunk bolt 16.

  On the other hand, the column side abutting portion 3 a of the outer wall panel support 3 is provided with a notch 3 e for engaging with the outer wall panel locking body 17 fixed to the column 4.

  As shown in FIG. 3 (b), the outer wall panel locking body 17 includes a long bolt 17 a as a main body portion that is passed through holes 4 a and 4 a provided on opposite side surfaces of the column 4, and both sides of the column 4. It consists of nuts 17b and 17b fixed to long bolts 17a protruding from the surface. On the surface of the nut 17b on the column 4 side, a taper 17c is provided for guiding the locking of the notch 3e of the column side contact portion 3a of the outer wall panel support member 3. In addition, 18 is interposed between the pillar 4 and the outer wall panel support material 3, and prevents the vibration of the pillar 4 as a vibration countermeasure and prevents the rubbing sound between the pillar 4 and the outer wall panel support material 3 during an earthquake. This is a vibration spacer.

  As shown in FIG. 1 and FIG. 3, the outer wall panel 2 is detachably suspended from the pillar 4 via the outer wall panel support member 3..., And here, four outer wall panels are spaced apart in the vertical direction. It is locked by the support material 3. Of the four outer wall panel supporting members 3..., The other outer wall panel supporting members 3 except the lowermost outer wall panel supporting member 3 are arranged in the horizontal direction with respect to the outer wall panel locking body 17 fixed to the column 4. While the displacement is restricted, the load on the outer wall panel 2 is not transmitted to the pillar 4 via the outer wall panel support 3. Here, as shown in FIGS. 1 (c) and 5 (a), the width of the notch 3 e provided in the column side surface abutting portion 3 a of the outer wall panel support member 3 is the main body of the outer wall panel locking body 17. The depth of the notch 3e is adjusted so that the gap is small when the lowermost outer wall panel support member 3 is supported by the lowermost outer wall panel locking body 17. It is set to be possible.

  On the other hand, among the four outer wall panel supporting members 3..., The lowermost outer wall panel supporting member 3 is restricted from being displaced in the horizontal direction with respect to the outer wall panel locking body 17 fixed to the column 4. The load of the panel 2 is transmitted to the pillar 4 via the outer wall panel support 3. Here, as shown in FIG. 1 (D) and FIG. 5 (B), the width of the notch 3e provided in the column side contact portion 3a of the outer wall panel support member 3 is the main body of the outer wall panel locking body 17. The depth dimension of the notch 3e is adjusted to the diameter of the long bolt 17a as a portion, and the outer wall panel locking body through the notch 3e when the outer wall panel support 3 is supported by the outer wall panel locking body 17 17 is set to transmit the load.

  For the outermost wall panel support member 3 at the lowermost end, as shown in FIG. 6, the outer wall panel support member 3 from the outer wall panel locking body 17, that is, the outer wall panel 2 from the pillar 4 is prevented from falling off. An anti-removal hardware 19 is attached for the purpose.

  As shown in FIG. 6 (a), the retaining metal fitting 19 includes a rectangular plate-type base portion 19a, a pressing portion 19b that protrudes horizontally from one end portion of the base portion 19a, and an end portion of the pressing portion 19b. It has a substantially J-shaped cross section composed of a flange portion 19c that is bent vertically. The base portion 19a has a substantially dharma-shaped hole 19d through which the nut 17b and the long bolt 17a of the outer wall panel locking body 17 are inserted. Further, when the outer wall panel support member 3 moves up and down due to the engagement with the hole 3f formed in the column side contact portion 3a of the outer wall panel support member 3 shown in FIG. Further, a locking portion 19e is provided for preventing the retaining metal piece 19 from coming off from the outer wall panel support member 3. Here, the locking portion 19e is formed by cutting and raising a part of the base portion 19a.

  As shown in FIGS. 6 (d) and 6 (e), with respect to the outermost wall panel support 3 at the lowermost end supported by the outer wall panel locking body 17, an anti-detachment hardware 19 is locked in the hole 19d. The body 17 is inserted and attached so that the pressing portion 19b contacts the upper end portion of the outer wall panel support member 3.

  Since the retaining metal fittings 19 are attached to the outer wall panel support member 3, even when the outer wall panel 2 moves up and down with respect to the column 4 during interlayer deformation, the outer wall panel support member 3 is connected to the outer wall panel member. It does not come off from the stop 17. Further, since the hole 19d of the retainer preventing metal piece 19 has a substantially dharma type, the outer wall panel 2 can be allowed to be displaced with respect to the column 4, so that the interlayer deformation of the outer wall panel 2 is not hindered. Further, since the locking portion 19e of the retaining metal fitting 19 is engaged with the hole 3f formed in the column side contact portion 3a of the outer wall panel support 3, the upper and lower sides of the outer wall panel 2 are engaged. The retaining metal fitting 19 and the outer wall panel support 3 do not separate when moved.

  Here, the outermost panel support member 3 at the lowermost end is attached to a position of 1/4 or less of the total length of the column 4 from the lower end of the column 4.

  In this curtain wall type outer wall structure 1, as shown in FIG. 7, for example, against a horizontal load such as wind pressure applied to the outer wall panel 2, a pillar 4 that is a structural frame via an outer wall panel support member 3. However, the vertical load of the outer wall panel 2 is transmitted to the column 4 only through the outermost wall panel support 3 at the lowermost end.

  In this outer wall structure, the outer wall panel is realized in the form of a curtain wall, attached to the structural frame composed of column beams, and the vertical frame of the outer wall panel is suspended on the column of the structural frame by the outer wall panel support material. Therefore, even if it is a curtain wall type outer wall structure that bears all the wind pressure with the outer wall panel frame, compared with the case where the outer wall panel is installed between the beams that are spaced apart due to the height of the building floor, The rigidity of the outer wall panel frame attached between the columns may be small, and the cross-sectional dimension of the outer wall panel frame can be set small. And since the cross-sectional dimension of the outer wall panel frame can be reduced, it is possible to design economically, as well as to reduce the space of the frame material and to secure the space for filling the heat insulating material. .

  Moreover, since the outer wall panel is partially supported by the outer wall panel support material, the thermal bridge can be reduced, and further, a heat insulating layer is provided outside the structural frame, and the heat insulating layers of the respective outer wall panels are made continuous. Thus, the heat insulation performance can be improved.

  In addition, since the outer wall panel is simply suspended from the pillar by the outer wall panel support material, only the outer wall panel can be easily removed even after the building is completed, and it can be flexibly adapted during renovation and repair. .

  In addition, the outer wall panel is suspended by at least two outer wall panel support members in the vertical direction with respect to the column of the structural frame, and the vertical load of the outer wall panel is used only for the outer wall panel support member at the lowest end. Since the portion of the structural frame column where the axial force is applied is limited to the range in which the outermost panel support material at the lowest end is suspended from the lower end of the column, the axial direction applied to the column Since the load bearing range of the column is limited to the lower part with respect to the load, the buckling strength of the column can be increased, the sectional shape of the column can be reduced, and an economical design can be performed.

  Furthermore, since the vertical load of the outer wall panel is transmitted to the column only through the lowermost outer wall panel support attached to the outer wall panel, the retaining hardware is only applied to the lowermost outer wall panel support. It is only necessary to attach it, and it is possible to efficiently realize measures for preventing the outer wall panel from coming off.

  Furthermore, the buckling proof strength of the column can be further improved by attaching the outermost panel support member at the lowermost end to the position of 1/4 or less of the total length of the column from the lower end of the column of the structural frame.

  In FIG. 8, the outer wall structure 31 which is the 2nd Embodiment of this invention is shown. Note that the same constituent elements as those in the first embodiment are denoted by the same reference numerals, and redundant description will be omitted.

  This outer wall structure 31 has an overhanging outer wall structure in which only some of the adjacent outer wall panels 32 protrude from the wall surface to the outdoor side.

  By simply changing the dimensions of the column side contact portions 33a of the outer wall panel support members 33 and 33 that support the projecting outer wall panel 32 in accordance with the projecting dimensions of the outer wall panel 32, a projecting outer wall structure is obtained. be able to. In addition, 34 is a corner cover material which connects the outer wall panel 2 of the general part of the outer wall panel 32 of an overhang | projection part.

  Although the embodiment of the present invention has been described above, the present invention is not limited to this, and various modifications can be made without departing from the spirit of the invention. For example, in the above-described embodiment, the outer wall panel support member has been shown as a support member having a substantially Z-shaped cross section including a column side contact portion, an outer wall panel contact portion, and a connecting portion. There may be any shape.

  Moreover, there is no restriction | limiting also about the attachment method of an outer wall panel support material and a pillar, Arbitrary methods may be selected in the range in which the vertical load of an outer wall panel is transmitted to a pillar only by the outer wall panel support material of the lowest end.

  Moreover, in the said embodiment, although shown about the case of an external heat insulation ventilation outer wall as an outer wall panel, there is no restriction | limiting in the structure of an outer wall panel, and it cannot be overemphasized that arbitrary structures may be selected.

  Further, in the above-described embodiment, the case where the adjacent outer wall panels are arranged in such a manner that the respective vertical frames are arranged in contact with each other via the outer wall panel support members fixed to the vertical frames is described. It is not necessary to secure the interval between the vertical frames by the thickness of the outer wall panel support member fixed to each vertical frame, and the outer wall panel support member fixed to each vertical frame at the interval of the vertical frame of the outer wall panel. Needless to say, a state in which a gap other than the plate thickness is provided may be used. In this case, the countersunk bolt does not necessarily need to be within the thickness of the outer wall panel support material, and may protrude from the thickness of the outer wall panel support material as long as it does not affect the spacing between adjacent outer wall panels. Good.

  Moreover, although an example was shown in the said Example about the retainer prevention metal fitting, in order to prevent the outer wall panel support material 3 from detaching from the outer wall panel latching body 17, there is no restriction | limiting in the mechanism and shape of a retainer prevention hardware. Needless to say, any hardware can be used.

  In the present embodiment, the outer wall panel support member is fixed to the vertical frame of the outer wall panel at the outer wall panel contact portion, and is removably suspended from the pillar of the structural frame at the column side surface contact portion. Although shown, the outer wall panel support member may be fixed to the column of the structural frame at the column side contact portion, and may be detachably suspended from the vertical frame of the outer wall panel at the outer wall panel contact portion.

DESCRIPTION OF SYMBOLS 1,31 ... Outer wall structure 2,32 ... Outer wall panel 3,33 ... Outer wall panel support material 4 ... Column (structure housing)
5 ... Beam (Structural frame)
6 ... Vertical frame (outer wall panel)
7 ... Horizontal frame (outer wall panel)
8 ... Outer insulation material 9 ... Base rail 14 ... Hole (outer wall panel)
15 ... Nut (outer wall panel)
16 ... Countersunk bolt 17 ... Outer panel locking body 19 ... Retaining prevention hardware

Claims (1)

A curtain wall type outer wall structure in which an outer wall panel is suspended on the outdoor side of a structural frame composed of column beams,
The outer wall panel has a frame body composed of a vertical frame and a horizontal frame, respectively,
Abut the side surface of the columnar, and the bar side abutment part provided cutouts in the vertically downward,
An outer wall panel abutting portion that abuts a side surface of the vertical frame of the outer wall panel;
The vertical frame of the outer wall panel is connected by the outer wall panel support material having a substantially Z-shaped cross section that connects the column side abutting portion and the outer wall panel abutting portion, and includes a connecting portion that abuts the indoor side surface of the vertical frame and the outdoor side surface of the column. Is suspended on the pillar of the structural frame ,
The outer wall panel support is
At the outer wall panel contact part, it is fixed to the vertical frame of the outer wall panel,
At the column side abutment, it is removably suspended on the column of the structural frame,
The outer wall panel is suspended by at least two or more outer wall panel support members in the vertical direction with respect to the pillar of the structural frame,
The outermost panel support material at the bottom end transmits the vertical load of the outer wall panel to the column, and the remaining outer wall panel support materials do not transmit the vertical load of the outer wall panel to the column.
The outermost panel support material at the lowermost end includes a rectangular plate-type base part that prevents the outer wall panel from coming off from the pillar, a pressing part that projects horizontally from one end of the base part, and an end of the pressing part The base part has a substantially J-shaped cross section consisting of a flange that is bent vertically, and the base part is provided with a substantially dharma-shaped hole for inserting the locking member of the outer wall panel. Base part for preventing the retaining hardware from coming off the outer wall panel support material when the outer wall panel support material moves up and down due to the engagement with the hole drilled in the column side contact part of the material A curtain wall type outer wall structure, characterized in that it is provided with a retaining metal fitting provided with a locking portion formed by cutting and raising a part of the curtain wall .

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