JPH0651994B2 - Curtain wall support equipment - Google Patents

Description

Description: (a) Technical Field of the Invention The present invention relates to a supporting device for an exterior curtain wall made of a precast concrete plate, and has a function of being able to follow interlayer displacement caused by an external force such as wind pressure or earthquake vibration. While retaining the above, it has a function of absorbing deformation due to warp, contraction, etc. of the curtain wall.

(B) Background of technology In recent years, curtain walls made of precast concrete panels have come to be used for the exterior walls of the skeletons of buildings, etc., and the mortar fixing method is also used to support the curtain walls to the skeleton. It is a support system that uses metal fittings (fasteners).

(C) Conventional Technology and Problems A conventional curtain wall supporting system of this type will be described with reference to FIGS. 10 and 11.

In FIG. 10 and FIG. 11, reference numeral 1 is a steel frame body which constitutes a building, and steel frame columns 2 which are arranged at predetermined intervals.
It is composed of a girder 3 horizontally fixed between the columns 2 and 2 corresponding to each floor. 4 is a curtain wall constituting the exterior wall of the steel frame body 1, which is a precast concrete panel, the outer surface of which is finished with tiles and other decorative materials.

The curtain wall 4 thus configured has a length corresponding to, for example, the steel frame columns 2 and 2 so that the exterior of the building becomes a horizontal window, and a plurality of fixing fasteners 5 and a plurality of fixing fasteners 5. It is supported by the girder 3 by the movable fastener 6. That is, as shown in FIG. 11, a fixed fastener 5 fixed to the upper surface of the girder 3 is attached to the upper end of the back surface of the curtain wall 4 by a bolt 7.
The lower end of the back surface of the curtain wall 4 is fastened to the movable fastener 6 fixed to the lower surface of the girder 3 by the bolt 8
Is supported by being attached so as to be relatively movable in the left-right direction.

Further, since the curtain wall 4 is an exterior wall of a building, a warp or a deformation occurs due to a large temperature difference between indoor and outdoor such as in summer, or a difference in drying shrinkage between the inside and outside of the concrete material. . Therefore, when supporting the curtain wall on the body, it is desirable to have a structure that can follow the above-mentioned deformation behavior.

However, in the conventional curtain wall supporting device as described above, although the lower end portion side of the curtain wall 4 is supported by the movable fastener 6 so as to be relatively movable in the left-right direction with respect to the skeleton, the fixed fastener for supporting the weight of the curtain wall 4 is provided. 5 and the curtain wall 4 are in a fixed state that restrains the movement of each other, and the curtain wall 4
Is fixed at a plurality of positions in the lateral direction by fixing fasteners 5, so that when the curtain wall 4 is deformed due to warping or expansion and contraction, the force applied to the fixing fasteners 5 is not applied even if the deformation amount is 4 to 5 mm. It reaches over 10 tonnes, with the result that considerable stress accumulates on the precast concrete panels and stationary fasteners. Therefore, when wind pressure or seismic vibration acts on the curtain wall 4 in such a state, the curtain wall 4 is cracked, the fastener is deformed or destroyed, or the supporting portion of the curtain wall 4 is damaged and the curtain wall 4 is damaged. The wall may be displaced.

Moreover, since the connection between the curtain wall 4 and the fixed fasteners 5 is performed by bolts, the workability of mounting the curtain wall to the frame is poor, and since the curtain wall 4 is supported by the girders 3, concrete pouring, etc. By girder 3
When the twist occurs, this acts directly on the curtain wall, and there is a problem that the curtain wall tilts.

(D) Object of the invention The present invention has been made to solve the above-mentioned conventional problems, and the curtain while maintaining the function of being able to follow the interlayer displacement caused by an external force such as wind pressure or seismic vibration. An object of the present invention is to provide a curtain wall supporting device capable of supporting the curtain wall and its supporting means by absorbing the deformation of the wall due to warpage, shrinkage and the like without causing internal stress.

(E) Configuration of the inventionIn order to achieve the above object, the curtain wall supporting device of the present invention supports a curtain wall having a deck integrally and horizontally projected on the back side by an upper fastener and a lower fastener. In a curtain wall supporting device in which a lower fastener is configured to follow an interlayer displacement caused by an external force after being installed on a frame, the upper fastener forms a fixed point in the left-right direction of the curtain wall. It is composed of one fastener and a third fastener forming a fixed point in the front-rear direction.

In the present invention, after the curtain wall is installed on the frame, if the curtain wall is deformed due to warp, contraction, or the like, the first fastener becomes a fixed point and the curtain wall moves in the left-right direction, and at the same time, the third fastener. Becomes a fixed point, and the curtain wall can move forward and backward.

Further, the second fastener can follow the interlayer displacement caused by an external force such as wind pressure or earthquake vibration.

In addition, the curtain wall is provided with a deck that projects integrally and horizontally on the back side, so the deck becomes a foothold for the operator when adjusting each support fitting, so there is no need to provide a special footing. Moreover, since the space between the curtain wall and the large beam facing the curtain wall is covered with the deck, the safety of work is secured and the workability can be improved.

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

In FIGS. 1 to 3, reference numeral 10 denotes a steel frame body that constitutes a building, and is a steel frame column 11 that is vertically arranged with a predetermined interval.
And a large beam 12 horizontally fixed between the columns 11, 11 corresponding to each floor, and the columns 11, 1
Between 1 is a curtain wall that constitutes the exterior wall of the building 1
3 is attached in a crossing state by a supporting device described later. This curtain wall 13 is a pillar 11,1
It consists of a precast concrete panel (hereinafter abbreviated as PC panel) 13a having a length corresponding to 1 and the outer surface of which is finished with tiles and other finishing materials 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 projected.

The support device for the steel frame body 10 of the curtain wall 13 absorbs relative movement between the curtain wall 13 and the steel frame body 10, and
It has a function of absorbing deformation due to warpage, expansion and contraction of the curtain wall 13, and therefore holds the pair of first fasteners 15A and 15B supporting the upper end portions of the curtain wall 13 and the lower end portions of the curtain wall 13. A pair of second fasteners 16A and 16B, 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, the above fasteners 15A, 15B, 16A for the curtain wall 13,
The arrangement relationship between 16B and 17 is as shown in FIG.

The first fasteners 15A and 15B are shown in FIGS.
As shown in the figure, a weight receiving member 151 integrally and horizontally fixed to the side surface of the column 11 by means such as welding, and a rectangular cylindrical pole 15 vertically protruding from the weight receiving member 151.
2, a square frame-shaped support fitting 153 having an outer shape sufficiently larger than the pole 152 and fixed to the rear surface of the upper end side of the PC panel 13a, and screwed to the weight receiving member 151 via a nut 154 so as to be vertically movable. Together with the above support metal fitting 1
Vertical adjustment bolts 155 to which 53 is placed and engaged, and bolts 156 and 157 that are respectively screwed into the front and rear walls of the support metal fitting 153 and adjust the position of the curtain wall 13 in the front and rear directions with respect to the column 11, and support. A bolt 158 that is screwed onto the inner wall of the metal fitting 153 and adjusts the position of the curtain wall 13 in the left-right direction with respect to the column 11.
8 is to be removed or loosened after the adjustment).

The second fasteners 16A and 16B are connected to the metal fittings 161 and 162 fixed to the lower ends of the pillar 11 and the PC panel 13a, respectively, and the elongated hole 161a of the pillar side fitting 161 as shown in FIG. Attached connecting bolts / nuts 163 and the PC panel side connecting fitting 162
And a turnbuckle 165 for connecting the connecting bolt / nut 163 and the connecting bolt 164 and adjusting the distance between the support column 11 and the curtain wall 13. Reference numeral 18 denotes a stopper that sets a distance between the lower end of the curtain wall 13 and the column 11, and is attached to the PC panel 13a in the vicinity of the second fasteners 16A and 16B, and is removed after the curtain wall 13 is attached. It is a thing.

Furthermore, the third fastener 17 is vertically fixed to the central upper surface of the girder 12 as shown in FIGS. 8 and 9 and has a holding metal fitting 171 having a slot 171a in the vertical direction.
And the elongated hole 17 of the holding metal fitting 171 is provided so as to project toward the center of the end surface of the deck 14 so as to face the holding metal fitting 171.
1a and a pin 172 that is vertically and movably engaged with the pin 1a. The contact surface of the pin 172 with the long hole 171a is chamfered. 173 is a cover.

When the curtain wall 13 is supported on the steel frame body 10 by using the first to third fasteners configured as described above, the elongated hole 171a of the holding metal fitting 171 is previously attached to the pin 172 constituting the third fastener 17. Engage and temporarily fix to a nut or the like. The curtain wall 13 in such a state is hoisted by a tower crane, and the first fasteners 15A, 1
Support metal fittings 15 on the side of the curtain wall 13 constituting 5B
3 are respectively fitted to the poles 152 on the support column, and the support fittings 153 are set on the adjusting bolts 155. As a result, the curtain wall 13 is temporarily installed on the steel frame body 10. At this time, the stopper 18 previously attached to the curtain wall 13 is in contact with the support 11.

After the curtain wall 13 is temporarily installed, the position adjusting bolts 15 in the front and rear directions of the first fasteners 15A and 15B are provided.
6 and 157 are rotated to adjust the position of the curtain wall 13 in the front-rear direction with respect to the support column 11, and the vertical adjustment bolt 155 is rotated to adjust the position of the curtain wall 13 in the vertical direction. Furthermore, the bolt 158 is rotated to adjust the position in the left-right direction with respect to the pillar 11 or the adjacent curtain walls located on the left and right. After that, a screw portion 165 in which the nut portion 165a of the turnbuckle 165 that constitutes the second fasteners 16A and 16B is connected to the support column 11 side and the PC panel 13 side bolts 163 and 164.
The two connecting bolts are connected to each other by being screwed into b and 165c. Then, the holding metal fitting 171 of the third fastener 17 is attached to the girder 12.
After welding, the nut is removed so that the warp deformation of the PC panel 13a in the front-rear direction is not restricted.

Further, after the curtain wall 13 and the pillar 11 are connected by the second fasteners 16A and 16B, the stopper 18 is removed. Furthermore, the curtain wall 1 of the steel frame body 10
After the exterior construction by 3 is completed, the first fastener 15
The left and right position adjustment bolts 158 at A and 15B are removed or loosened.

In the curtain wall 13 supported as described above, when the curtain wall 13 is warped such that its central portion bulges outward due to the temperature difference between the indoor and outdoor areas separated by the curtain wall 13, the third fastener is used. Since 17 slides in the front-rear direction, it absorbs the warp without restraining it, and accordingly, the third fastener 1
7 and the curtain wall 13 do not generate internal stress. Further, when the PC panel 13a expands and contracts due to drying and wetting of the PC panel 13a, the deformation causes the receiving member 151 constituting the first fasteners 15A and 15B.
It is absorbed by the left and right slide between the support metal fitting 153 and the vertical and horizontal movements of the turnbuckle 165 that constitutes the second fasteners 16A and 16B.

Further, since the first fasteners 15A and 15B that support the weight of the curtain wall 13 and the second fasteners 16A and 16B that hold the lower portion of the curtain wall 13 are attached to the columns having high rigidity, the number of fasteners is reduced, and No need to reinforce 12 and assembly of fastener components can be done on PC panel and steel frame forming side. With this, the labor for transporting and lifting fasteners on site as in the past is required. Also, the equipment is not required, the installation work of the curtain wall 13 is simplified, and the construction cost can be significantly reduced.

The first fasteners 15A and 15B each have a receiving member 151 with a level bolt 155 attached to the column 11, and a square frame-shaped support metal fitting 153 with an adjustment bolt attached to the curtain wall 13 side. Since the curtain wall 13 can be supported on the steel frame body 10 by one-touch by fitting it to the pole 152 of the receiving member 151, it becomes possible to temporarily support the curtain wall 13 on the steel frame body 10, and thereby, for example, a horizontal window type. When forming the exterior wall, the plurality of curtain walls 13 arranged in the lateral direction of the frame are temporarily supported by the pillars 11 by the first fasteners 15A and 15B in advance, and then the curtain walls 13 adjacent to each other are arranged before and after the curtain walls 13. , It suffices to adjust the vertical and horizontal positional relationship with the adjusting bolts 155 to 158.
For this reason, not only the mounting accuracy for the steel frame body 10 can be secured, but also the mounting speed of the curtain wall 13 can be improved, the construction period can be greatly shortened, and the efficiency of the tower crane for suspending and transferring the curtain wall can be improved. I can upload.

Further, since the curtain wall 13 is provided with the deck 14 which is integrally and horizontally projected on the back side, the deck 14 serves as a foothold for the operator during the adjustment work of the respective support fittings 153. Since it is not necessary to provide the curtain wall 13 and the space between the curtain wall 13 and the girder 11 facing the curtain wall 13 is covered with the deck 14, the safety of the work is ensured and the workability can be improved. Further, the deck 14 can be used as a waterproof pan for walls through the floor, and its tip can be used as a skirting board, and the PC panel 13a and the girder 11 can be used.
The floor deck steel frame, deck plate, concrete stopper, concrete placing, reinforcement material for preventing concrete beam twisting, etc. can be omitted, and the construction cost can be reduced.

In the above embodiment, the case where the curtain wall 13 is supported by the pillar 11 of the steel frame body 10 has been described.
Not limited to this, it is needless to say that the present invention can be applied to a building frame after placing concrete. Further, the first to third fasteners are not limited to the structure of the embodiment.

(G) Effect of the Invention As described above, according to the present invention, a curtain wall having a deck integrally and horizontally projected on the back side,
In a curtain wall supporting device configured to be supported by an upper fastener and a lower fastener, and configured to follow an interlayer displacement caused by an external force after the lower fastener is installed on a frame, the upper fastener is the curtain wall. Forming a fixed point in the left-right direction of the
Fasteners and a third that forms a fixed point in the front-back direction
The upper fastener absorbs the deformation caused by the warp and contraction of the curtain wall, and the lower fastener follows the interlayer displacement caused by the external force such as wind pressure or earthquake vibration as before. As a result, internal stress is not accumulated in the fastener and the curtain wall, and the curtain wall and the like can be stably supported without being damaged or damaged. Further, since the deck functions as a scaffold and a part of the floor, there is an effect that the safety of construction is improved, and workability and workability are also improved.

[Brief description of drawings]

FIG. 1 is a plan view showing a state in which a curtain wall is supported by a body using a supporting device according to the present invention, FIG. 2 is a sectional view taken along line II-II of FIG. 1, and FIG. Figure III
-III is a cross-sectional view taken along line III, FIG. 4 is an explanatory view showing an arrangement relationship of supporting fasteners with respect to a curtain wall, and FIG. 5 is a plan view showing an example of the first fastener of the present invention.
FIG. 7 is a vertical side view showing the example of the second fastener in the present invention, FIG. 8 is a vertical side view showing the example of the third fastener in the present invention, and FIG. A rear view, FIG. 10 is an explanatory view showing a conventional curtain wall supporting device, and FIG. 11 is a cross-sectional view of a main part thereof. 10: frame, 11: pillar, 12 ... girder, 13 ...
Curtain wall, 13a ... PC panel, 15A, 1
5B ... 1st fastener, 151 ... Weight receiving member, 15
2 ... Pole, 153 ... Support metal fittings, 155-158 ...
… Bolts, 16A, 16B… Second fasteners, 16
3,164 ... Connecting bolt, 165 ... Turnbuckle, 17 ... Third fastener, 171 ... Holding metal fitting, 1
72 ... Pin.

Claims (1)

[Claims] 1. A curtain wall having a deck which is integrally and horizontally projected on the back side is installed on a skeleton to absorb relative movement with the skeleton and to absorb deformation due to warp or shrinkage of the curtain wall. A supporting device for moving the curtain wall so that the left and right upper end portions of the curtain wall can move in the left-right direction relative to the skeleton and the warp of the curtain wall,
A pair of first fasteners that weight-supports so as to be able to absorb deformation due to contraction and the like, and a pair of second fasteners that weight-supports the lower left and right ends of the curtain wall so that they can move relative to the body horizontally and vertically. A curtain wall supporting device, characterized in that the center of the upper end portion of the deck integrally and horizontally projected on the curtain wall is constituted by a third fastener for supporting the front and rear and up and down relative to the body. .