JPS61169552A - Apparatus for supporting curtain wall - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

Detailed Description of the Invention (a) Technical Field of the Invention The present invention relates to a support device for an exterior curtain wall made of a precast concrete plate, and in particular, to a support device for an exterior curtain wall made of a precast concrete plate. The present invention also has a function of absorbing deformation of the curtain wall, and improves the ease of installation of the curtain wall.

(b) Background of the technology In recent years, curtain walls made of precast concrete panels have come to be used for the exterior walls of building frames, etc.
The eight bodies are supported using metal fittings (fasteners) instead of the mortar fixation method.

(c) Prior Art and Problems This kind of conventional curtain wall support system will be explained with reference to FIGS. 10 and 11.

In FIGS. 10 and 11, 1 is a steel frame that constitutes a building, and steel columns 2 are arranged at predetermined intervals,
It is composed of large beams 3 horizontally fixed between the pillars 2 and 2 corresponding to each floor.

A curtain wall 4 constitutes the exterior wall of the steel frame 1, and is made of precast concrete panels, the outer surface of which is finished with tiles or other decorative materials.

The curtain wall 4 thus constructed has a length corresponding to the space between the steel frame columns 2 and 2 so that the exterior of the building becomes a horizontal row of windows, and has a plurality of fixed fasteners 5 and a plurality of fixed fasteners 5. It is supported by the girder 3 by a movable fastener 6. In other words, as shown in FIG.
Attach the lower end of the back surface of the curtain wall 4 to the movable fastener 6 fixed to the lower surface of the girder 3 with bolts 8.
It is supported by being attached so that it can move relative to the left and right.

In addition, since the curtain wall 4 serves as the exterior wall of the building, deformations such as warping and expansion/contraction may occur due to large temperature differences between indoors and outdoors during the summer, or due to differences in the amount of drying shrinkage between the inside and outside of the concrete material. . Therefore, when supporting the curtain wall to the frame, it is desirable to have a structure that can follow the above-mentioned deformation behavior.

However, in the conventional curtain wall support device as described above, the lower end side of the curtain wall 4 is attached to the movable fastener 6! Although the fixed fastener 5 that supports the weight of the curtain wall 4 and the curtain wall 4 are supported so as to be movable relative to the gi body in the left and right direction, the curtain wall 4 and the fixed fastener 5 are in a fixed state that restrains each other from moving. is fixed by fixed fasteners 5 at multiple points in the lateral direction, so if the curtain wall 4 is deformed due to warpage or expansion/contraction, the force applied to the fixed fasteners 5 will be small even if the amount of deformation is 4 to 5 N. Reaching over 10 tons,
This causes considerable stress to build up in the precast concrete panels and fixed fasteners. Therefore,
If wind pressure or seismic vibration acts on the curtain wall 4 in such a state, cracks may appear in the stress-concentrated parts of the curtain wall, the fasteners may be deformed or destroyed, or the supporting parts of the curtain wall 4 may be damaged and the curtain wall may become damaged. There is a risk that it may shift.

Moreover, since the curtain wall 4 and the fixed fastener 5 are connected by bolts,! The workability of installing the curtain wall to the I body is poor (and since it is supported by the girder 3, if the girder 3 is twisted due to concrete pouring, etc., this will act directly on the curtain wall, There was a problem with the curtain wall leaning.

Object of the Invention The present invention has been made in order to solve the above-mentioned conventional problems. An object of the present invention is to provide a curtain wall support device that enables stable support without causing internal stress and improves the workability and construction efficiency of curtain wall installation.

(E) Structure of the Invention In order to achieve the above object, the curtain wall support device of the present invention supports the weight of the left and right upper ends of the curtain wall so as to be movable relative to the frame in the left and right direction, and also connects the curtain wall side support portion and the frame. a pair of first fasteners that can be connected to the side receiving portions in one-button connection; a pair of second fasteners that connect and support the left and right lower end portions of the curtain wall so as to be movable relative to the 11 bodies in the left and right and up and down directions; and the curtain wall. and a third fastener that supports the center of the upper end of the frame so that it can move relative to the frame body back and forth and up and down.

(F) Embodiment of the Invention An embodiment of the present invention will be described below with reference to FIGS. 1 to 9.

In Figures 1 to 3, reference numeral 10 denotes a steel frame that constitutes a building, with steel columns 11 vertically arranged at predetermined intervals, and large beams horizontally fixed between the columns 11 and 11 corresponding to each floor. 12, and the pillars 11, 11
In between, there is a curtain wall 13 that constitutes the exterior wall of the building.
are attached across from each other by a support device to be described later.

This curtain wall 13 has pillars 11. It consists of a precast concrete panel (hereinafter abbreviated as PC panel) 13a with a length corresponding to the length between 11 and 13a, the outer surface of which is finished with tiles or other finishing material 13b, and the inside of the PC panel 13a. A deck 14 that covers the space between this and the girder 12 is integrally and horizontally protruded.

Further, the support device for the steel frame 10 of the curtain wall 13 absorbs relative movement between the curtain wall 13 and the steel frame 10, and
For this purpose, a pair of first fasteners 15A and 15B that support both upper ends of the curtain wall 13 and a pair of first fasteners 15B that hold both lower ends of the curtain wall 13 are provided. and a third fastener 17 that holds the center of the upper side of the curtain wall 13, that is, the center of the deck 14. That is, curtain wall 1
Each of the above-mentioned fasteners 15A, 15B, 16A, 1 for 3
The arrangement relationship between 6B and 17 is shown in FIG.

The first fasteners 15A and 15B are shown in FIGS.
As shown in the figure, a weight bearing member 151 is fixed horizontally to the side surface of the support column 11 by means such as welding, and a rectangular cylindrical ball 15 vertically protrudes from the weight bearing member 151.
2, a rectangular frame-shaped support fitting 153 fixed to the upper rear surface of the PC panel 13a and having an outer diameter sufficiently larger than the pole 152, and screwed to the weight receiving member 151 via a nut 154 so as to be movable up and down. Together with the above support metal fitting 1
53 is mounted and engaged; bolts 156 and 157 are screwed into the front and rear walls of the support fitting 153, respectively, and adjust the position of the curtain wall 13 in the front and rear directions with respect to the support column 11; A pole l-158 (this bolt 1
58 is something that can be removed or loosened after adjustment).

The second fasteners 16A and 16B are connected to connecting fittings 161 and 162 fixed to the lower ends of the pillar 11 and the PC panel 13a, respectively, and to the elongated holes 161a of the pillar-side connecting fitting 161, as shown in FIG. The attached connecting bolt/nut 163 and the above PC panel side connecting fitting 162
The turnbuckle 165 connects the connecting bolt/nut 163 and the connecting bolt 164 and adjusts the distance between the column 11 and the curtain wall 13. A stopper 18 sets the distance between the lower end of the curtain wall 13 and the pillar 11, and is attached to the PC panel 13a in proximity to the second fasteners 16A and 16B, and is removed after the curtain wall 13 is attached. It is something.

Furthermore, as shown in FIGS. 8 and 9, the third fastener 17 is fixed perpendicularly to the central upper surface of the girder 12, and is attached to a holding metal fitting 171 having an elongated hole 171a in the vertical direction.
The long hole 17 of the holding fitting 171 is protruded from the center of the end face of the deck 14 opposite to the holding fitting 171.
1a and a pin 172 that is engaged with the pin 172 so as to be movable vertically and longitudinally, and the surface of the pin 172 that comes in contact with the elongated hole 171a is chamfered. 173 is a cover.

When supporting the curtain wall 1.3 on the steel frame body 10 using the first to third fasteners configured as described above, the pins 172 constituting the third fasteners 17 are inserted into the elongated holes of the holding fittings 171 in advance. 171a and temporarily fasten it to a Nando or the like. The curtain wall 13 in such a state is lifted up by a tower crane, and the first fasteners 15A,
Support metal fittings 1 for 13 examples of curtain walls composing 15B
53 are respectively fitted to the pillar side balls 152, and the support fittings 153 are set on the adjustment bolts 155. As a result, the curtain wall 13 is temporarily installed on the steel frame 10. Further, at this time, the stopper 18 previously attached to the curtain wall 13 is in contact with the support column 11.

After the curtain wall 13 is temporarily installed, the front and rear position adjustment poles 1-1 of the first rear assemblies 15A and 15B are
56 and 157 to adjust the longitudinal position of the curtain wall 13 with respect to the pillars 11, and also rotate the vertical adjustment bolts 155 to adjust the position of the curtain wall 13 in the longitudinal direction.
Adjust the position vertically. Furthermore, the bolt 158 is rotated to adjust the position in the left and right direction relative to the support column 11 or the adjacent curtain walls located on the left and right sides. After that, the nut portion 165a of the turnbuckle 165 constituting the second fasteners 16A, 16B is connected to the bolt 163, 164 on the column 11 side and the PC panel 13 side.
5b and 165c to connect the reconnection bolts.

Then, attach the holding fitting 171 of the third fastener 17 to the main beam 1.
After welding to 2, the NAND is removed so that the warp deformation of the PC panel 13a in the front-back direction is not restricted.

Further, after the curtain wall 13 and the support columns 11 are connected with the second fasteners 16A and 16B, the stopper 18 is removed. Furthermore, the curtain wall 1 of the steel frame 10
After the exterior construction in step 3 is completed, the first fastener 15
Remove or loosen the left and right position adjustment bolts 158 at A and 15B.

In the curtain wall 13 supported as described above, if the curtain wall 13 is warped such that its central portion bulges outward due to a temperature difference between the indoor and outdoor areas isolated by the curtain wall 13, the third fastener 17 slides in the front-back direction, the warp is absorbed without being restrained, and accordingly, the third fastener 1
7 and the curtain wall 13 are not subjected to internal stress. Furthermore, when the PC panel 13a expands and contracts due to drying or wetting of the PC panel 13a, the deformation is caused by
This is absorbed by the left and right slides between the support fittings 153 and the vertical and horizontal movements of the turnbuckles 165 that constitute the second fasteners 16A and 16B.

Also, first fasteners 15A, 15B that support the weight of the curtain wall 13 and a second fastener 16A that holds the lower part of the curtain wall 13.

Since 16B is attached to a highly rigid support column, the number of fasteners is reduced and reinforcement of the girder 12 is no longer required.
Assembling of fastener components can be done on the formed side of the PC panel and steel frame, which eliminates the need for transporting fasteners on site as in the past.

Labor and equipment for lifting are no longer required, installation work for the curtain wall 13 is simplified, and construction costs can be reduced significantly.

Further, the first fasteners 15A and 15B have a receiving member 151 with a level bolt 155 attached to the column 11, and a square frame-shaped support fitting 153 with an adjustment bolt attached to the curtain wall 13 side. By fitting the poles 152 of the receiving member 151, the curtain wall 13 can be supported on the steel frame 10 with one touch. Therefore, the curtain wall 13 can be temporarily supported on the steel frame 10. When forming an exterior wall, a plurality of curtain walls 13 arranged in a horizontal direction are temporarily supported by first fasteners 15A and 15B to the support columns 11 in advance, and then each adjacent curtain wall 13 is Before and after.

It is only necessary to adjust the vertical and horizontal positional relationship using adjustment bolts 155 to 158. Therefore, not only can the installation accuracy to the steel frame 10 be ensured, but also the installation speed of the curtain wall 13 can be improved, and the construction period can be significantly reduced. This makes it possible to shorten the length of the curtain wall and increase the efficiency of the tower crane that suspends and transports the curtain wall.

In addition, in the above embodiment, the case where the curtain wall 13 is supported by the pillars 11 of the steel frame body 10 has been described;
Of course, the method is not limited to this, and can also be applied to building frames after concrete has been poured. Further, the first to third fasteners are not limited to the structure of the embodiment.

(g) As described in detail, according to the present invention, a pair of first fasteners that support the weight of the left and right upper ends of the curtain wall so that they can move relative to the frame in the left and right direction, and can be connected with one touch; A pair of second electrodes that connect and support the left and right lower ends of the curtain wall so that they can move relative to the frame in the left and right and up and down directions.
zipper and the center of the top edge of the curtain wall! Since the curtain wall is supported on the frame by the third fastener that supports the four rods so that they can move relative to each other in the front and back and up and down directions, relative displacement between the curtain wall and the frame and deformation of the curtain wall can be absorbed. This prevents internal stress from accumulating in the fasteners and curtain wall, and allows the curtain wall etc. to be stably supported without damage or breakage.
Since the curtain wall can be temporarily supported on the frame by the first fastener, there is an effect that the workability and construction efficiency of installing the curtain wall can be improved.

[Brief explanation of drawings]

FIG. 1 is a plan view showing a curtain wall supported on a frame using the support device according to the present invention, FIG. 2 is a sectional view taken along line nn in FIG. 1, and FIG. m in the diagram
4 is an explanatory diagram showing the arrangement relationship of the supporting fasteners with respect to the curtain wall, FIG. 5 is a plan view showing an example of the first fastener in the present invention, and FIG.
7 is a vertical side view showing an example of the second fastener of the present invention, FIG. 8 is a vertical side view showing an example of the third fastener of the present invention, and FIG. 9 is a vertical side view of the second fastener of the present invention. The rear view and FIG. 1O are explanatory diagrams showing a conventional curtain wall support device, and FIG. 11 is a sectional view of the main parts thereof. 10...Structure, 11...Column, 12...Girder, 1
3...Curtain wall, 13a...PC panel,
15A, 15B... First fastener, 151... Weight receiving member, 152... Ball, 153... Supporting metal fittings, 155-158... Bolt, 16A, 16B...
Second fastener, 163, 164... Connection bolt, 1
65... Turnbuckle, 17... Third fastener, 171... Holding metal fitting, 172... Pin. Figure 10

Claims (1)

[Claims] a pair of first fasteners that support the weight of the left and right upper ends of the curtain wall so as to be movable in the left and right directions relative to the frame, and that can connect the curtain wall side support part and the frame side receiving part with a single touch; a pair of second fasteners that connect and support the upper end of the curtain wall so as to be movable relative to the frame body in the left and right directions and up and down; and a third fastener that supports the center of the upper end of the curtain wall so as to be movable relative to the frame body in the front and back and up and down directions; A curtain wall support device comprising: