JP3734862B2 - Wall panel mounting structure, mounting bracket and construction method - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention provides a building base or foundation (hereinafter simply referred to as a foundation), an outer wall panel such as a precast concrete panel (PC panel) such as a lightweight cellular concrete panel, or a partition wall panel (hereinafter simply referred to as a wall panel). ), A mounting bracket used in the mounting structure, and a construction method for mounting the wall panel using the mounting bracket.
[0002]
[Prior art]
As a conventional mounting structure for attaching a wall panel on this type of base, there are roughly a wet structure using a mortar shown in FIG. 5 and a dry structure not using a mortar as shown in FIG.
[0003]
As shown in FIG. 5, in the wet structure described above, the anchor rebar 51 is embedded in the base 52 at the stage of concrete work, and after the base 52 is hardened, the sink bar 53 is placed on the base 52, and this sink bar is placed. 53 is welded and fixed to the bent anchor rebar 51. Next, when the wall panel 54 is installed, the hooked joint reinforcing bar 56 is inserted into the groove 55 between the long sides of the wall panel 54, and the hook part is poured and fixed to the reinforcing bar 53.
[0004]
Further, by filling the groove 55 around the joint reinforcing bar 56 with hook with mortar, the joint reinforcing bar 56 and the wall panel 54 are fixed to each other, and thereby external force applied to the wall panel 54 is applied to the joint reinforcing bar 56, the flowing reinforcing bar 53, and the like. This structure is configured to transmit to the base 52 via the anchor reinforcing bar 51.
[0005]
Further, as shown in FIG. 6, in the dry structure described above, the anchor rebar 51 is embedded in the base 52 at the stage of concrete work, and after the base 52 is hardened, the angle steel 57 is placed thereon, The upper bent portion of the reinforcing bar 51 is welded and fixed to the angle steel 57. A drill hole 58 is drilled in a part of the wall panel 54, and a hook bolt 59 and a washer 60 are set in the drill hole 58.
[0006]
By hooking and welding the hook portion of the hook bolt 59 to the vertical flange of the angle steel 57 and fastening the hook bolt 59, the wall panel 54 is mounted on the base via the hook bolt 59, the angle steel 57 and the anchor rebar 51. 52 is attached to the structure. Moreover, the Zabori hole 58 was finally repaired using a dedicated material.
[0007]
[Problems to be solved by the invention]
However, in the wet structure shown in FIG. 5 described above, (1) since mortar is used at the construction site, quality control is difficult. (2) Preparation of mortar and the work of filling the mortar into the groove 55 formed between the wall panels 54 have problems such as a reduction in construction efficiency.
[0008]
(3) Furthermore, since this wet structure cannot insert the joint reinforcement 56 and the mortar at the end of the wall surface formed by the wall panel 54, another mounting hardware must be used. Will be adversely affected because of the exposure. (4) Since the wall panel 54 is supported by flowing and welding the joint reinforcement 56 to the reinforcement 53, when the load exceeding the design load is applied to the wall panel 54 and the welded portion breaks, the wall panel 54 There was a risk of 54 dropping off.
[0009]
Further, the dry structure shown in FIG. 6 described above (1) has an adverse effect on the interior finish because the angle steel 57 and the hook bolt 59 are exposed to the outside of the wall panel 54. (2) It was necessary to repair the borehole 58 with a dedicated material in post-processing, and there was a problem that the construction efficiency was lowered.
[0010]
In addition, this dry structure (3) may cause a significant loss of aesthetics when the repair material for repairing the borehole 58 and the base material of the wall panel 54 are separated by aging.
[0011]
Furthermore, the wall panels shown in Japanese Utility Model Publication Nos. 63-46572, 63-265046, 1-15774, and 7-14501, which were recently developed by the present applicant. The mounting structure technology is well known. This technology inserts a rod-shaped steel material into a hole in a direction perpendicular to the small edge surface drilled in the small edge surface of the wall panel, and uses the disk-shaped original end of the rod-shaped steel material as the opening frame edge of the opening of the building. In this technique, the wall panel is attached and fixed to the opening frame edge of the opening by welding.
[0012]
However, the above-mentioned wall panel mounting structure developed by the applicant of the present patent application inserts a bar-shaped steel material into a hole drilled in the small edge of the wall panel, and uses the original end of the bar-shaped steel material as an opening frame edge. Since it is welded, the structure is extremely simple, and the mounting bracket of the wall panel is not exposed to the outside of the wall surface, so that the work efficiency is good and the finish is excellent. However, among these mounting structures, the techniques shown in Japanese Utility Model Publication Nos. 63-46572 and 63-265046 are intended to attach and fix the small edge surface of the panel adjacent to the opening to the opening frame. Due to the technology, when the panel edge is not exposed when the panel is attached, there is a problem that it is difficult to weld the original end of the steel material.
[0013]
Moreover, in the technology shown in Japanese Utility Model Publication Nos. 1-15774 and 7-14501, the portion where the disk-shaped original end of the rod-shaped steel material is welded to the panel receiving portion or the anchor metal fitting is the lower end of the panel. If it is between the building base or foundation and the gap is small, it is difficult to perform reliable welding, or it is difficult to confirm whether welding has been performed reliably due to upward welding work. Was.
[0014]
The wall panel mounting structure and its mounting bracket according to the present invention are a completely new technology developed in view of the above-mentioned conventional problems, and in particular, the wall panel on the base is strong and simple with a simple structure. The present invention provides a wall panel mounting structure and a mounting bracket technology that can be mounted in a style.
[0015]
[Means for Solving the Problems]
The wall panel mounting structure according to the present invention is a completely new technology that has fundamentally improved the above-mentioned conventional problems. The gist of the present invention is that a lower edge is placed on a weldable building base or foundation. In a structure where a wall panel with chamfered parts is attached, a bottom plate is inserted between the wall panel and the building base or foundation, and the wall panel on the bottom plate is chamfered so that the panel is not placed on the part. A shaft body is formed on the bottom surface of the wall panel in a direction perpendicular to the surface of the wall panel. The wall panel mounting structure is characterized in that the wall panel is mounted on a building foundation or foundation after being inserted into the hole.
[0016]
The mounting bracket used in the wall panel mounting structure according to the present invention is a bracket having a specific structure that enables the above-described configuration of the present invention, and the gist of the first invention of the mounting bracket is the welding base. It is a wall panel mounting bracket constituted by a steel rod-like shaft body standing upright on a bottom plate having a notch that can be welded to a material.
[0017]
The second invention of the wall panel mounting bracket according to the present invention is configured such that the bottom plate is a flat plate, a flat plate provided with a leg portion only on one side edge on the notch side, or a flat plate provided with a leg portion on both side edges. It is the mounting bracket of the wall panel of 1st invention.
[0018]
A third invention of the wall panel mounting bracket according to the present invention includes: a shaft body provided with a bottom portion having an outer diameter larger than the outer diameter of the shaft body at a lower end; and a bottom plate provided with a hole through which the shaft body can be inserted; The wall panel mounting bracket according to any one of the first and second aspects of the present invention, which is configured by combining.
[0019]
A fourth aspect of the mounting bracket according to the present invention is any one of the first to third aspects, wherein the projection is provided at the tip of the shaft body, and the shaft body and the bottom plate are provided with rotation stoppers. This is a wall panel mounting bracket.
[0020]
The gist of the construction method according to the present invention is that a hole is drilled in a direction perpendicular to the surface of the lower edge of a wall panel having a chamfered edge at the lower edge, and is raised on a bottom plate having a notch. The bottom plate is attached to the lower surface of the wall panel so that the notch is located in the chamfered portion by inserting the shaft into the hole, and the wall panel is built on a weldable building base or foundation. Then, the peripheral edge of the notch portion of the bottom plate is welded by using the chamfered portion of the wall panel, and the wall panel is attached and fixed on the building base or foundation.
[0021]
DETAILED DESCRIPTION OF THE INVENTION
FIG. 1 is a perspective explanatory view showing the main part of the wall panel mounting structure according to the present invention, and FIG. 2 is a perspective explanatory view showing the main part of the wall panel mounting structure according to the present invention. FIG. 3 is a partial cross-sectional explanatory view of the wall panel mounting structure of FIG. 1, and FIGS. 4A, 4B, and 4C are examples of the mounting bracket according to the present invention. FIG.
[0022]
1 to 3, reference numeral 1 denotes an anchor reinforcing bar, which is embedded in the base 2 at the stage of concrete work. Reference numeral 3 denotes a welding base material composed of a flat steel plate, which is placed on the leveling mortar 4 after the leveling mortar 4 laminated on the base 2 is completely cured. The welded base material 3 is locked by the upper end bent portion 1a of the anchor bar 1, and both are welded to each other.
[0023]
Reference numeral 5 denotes a bottom plate, which has a lateral width larger than the lateral width (short axis width) of the weld base 3 and is configured so that one side portion thereof can be placed on the weld base 3. Yes. Legs 6 having a height substantially equal to the thickness of the welding base material 3 are integrally attached to the lower surfaces of both sides of the bottom plate 5. Further, a hole 7 is formed in one side portion of the bottom plate 5 that is not placed on the welding base 3. Further, a substantially inverted U-shaped notch 8 is provided at the center of one side of the bottom plate 5 placed on the welding base 3.
[0024]
A shaft 9 has an outer diameter that can be inserted into the hole 7 of the bottom plate 5. A bottom portion 10 having an outer diameter larger than the inner diameter of the hole 7 and a height substantially equal to the thickness of the weld base 3 is integrally attached to the lower end of the shaft body 9. Further, four protrusions 11 are provided on the outer peripheral surface of the upper end portion of the shaft body 9.
[0025]
Reference numeral 12 denotes a wall panel, and a hole 13 is formed in the bottom edge of the bottom panel in a direction perpendicular to the edge surface. The inner diameter of the hole 13 is substantially equal to the outer diameter of the shaft body 9, and when the shaft body 9 is inserted into the hole 13, the protrusion 11 provided on the upper end portion of the shaft body 9. Is configured so as to be difficult to insert into the wall surface around the hole 13. A chamfered portion 12 a is provided at the lower edge of the wall panel 12.
[0026]
In constructing the wall panel mounting structure according to the present invention, the shaft body 9 is inserted into the hole 7 of the bottom plate 5 to attach the shaft body 9 to the bottom plate 5. Next, the shaft body 9 is inserted into the hole 13 formed in the small edge surface of the bottom portion of the wall panel 12, and the projection 11 projecting from the shaft body 9 is inserted into the wall surface around the hole 13. The bottom plate 5 is abutted and fixed to the small edge surface of the bottom of the wall panel 12 so that the notch of the bottom plate 5 connected to 9 and the chamfered portion 12a of the wall panel 12 coincide.
[0027]
In this way, the wall panel 12 having the bottom plate 5 attached to the bottom end face is built on the base 2, and the bottom plate 5 is placed on the welding base 3. In this state, the chamfered portion 12a of the wall panel 12 is placed. , The inner peripheral edge of the notch 8 of the bottom plate 5 is welded to the welding base material 3 to form a welded portion 14, and the bottom plate 5 is firmly fixed to the welding base material 3, whereby the wall panel 12 is fixed to the base 2. Can be fixed on top.
[0028]
In the above embodiment, as shown in FIGS. 2 and 4 (A), the leg portions 6 are attached to both side edges of the bottom plate 5, but as shown in FIG. 4 (B), one side edge of the bottom plate 5 is provided. It is also possible to provide the leg part 6 only. In this case, since the head of the shaft body 9 attached to the bottom plate 5 is substantially equal to the thickness of the welding base material 3, the side portion of the bottom plate 5 that is not placed on the welding base material 3 is the head 10. I can support it.
[0029]
Thus, the bottom plate 5 provided with the leg portion 6 on the side where the welded portion 14 is applied can prevent the wall portion 12 from being displaced in the thickness direction when the welding breaks due to an earthquake or the like. However, the welding base material 3 that can be engaged with the leg portion 6 as shown in FIG. 2 must be provided on the base 2, or there must be a thing that becomes a catching portion on the base 2 or the like.
[0030]
As shown in FIG. 4 (A), the bottom plate 5 provided with the leg portions 6 on both sides is more stable than the bottom plate 5 provided with the leg portions 6 on one side portion as shown in FIG. 4 (B). . Furthermore, such a leg part 6 is not provided at all. A bottom plate 5 as shown in FIG. 4C can also be used. The bottom plate 5 has a simple structure and can be mass-produced at low cost.
[0031]
The notch 8 provided in the bottom plate 5 can be provided in the center as in the previous example, or two notches 8 can be provided on both sides. The welding base 3 is necessary when the base 2 is made of concrete and does not have a welded portion. Further, even when such a welded portion is provided, when the bottom portion 10 of the shaft body 9 is disposed on the lower surface of the bottom plate 5, the welding base material 3 is necessary to keep the bottom plate 5 horizontal. It is. The weld base 3 may be a flat steel plate as described above or a steel bar, but the flat steel plate is more stable when mounted on the base 2.
[0032]
The shaft body 9 can be configured to be preliminarily welded to the upper surface of the bottom plate 5 so as to integrally stand and protrude. However, as described above, the shaft body 9 and the bottom plate 5 are separately formed, and so on. It is more convenient in manufacturing to assemble the on-site. When the shaft body 9 is inserted into the hole 7 of the bottom plate 5 and assembled in this way, the bottom plate 5 rotates freely with respect to the shaft body 9, so when the wall panel 12 is built on the base 2, The position where the center of gravity is stable, that is, the notch 8 to be welded may be on the lower side.
[0033]
Therefore, it is necessary to put the hand into the bottom surface of the wall panel 12 installed by the operator and pull back the side of the notch portion 8 of the bottom plate 5 to the normal position to perform welding, which is extremely troublesome. . Therefore, in order to solve this, it is necessary to prevent the bottom plate 5 from rotating, for example, by forming the outer peripheral surface of the shaft body 9 and the inner peripheral surface of the hole 7 in a square shape.
[0034]
In the wall panel mounting structure according to the present invention, since the welding base material 3 is attached to the upper surface of the base 2 made of concrete, the bottom plate 5 attached to the wall panel 12 side is attached to the welding base material 3. By welding 14, the wall panel 12 can be firmly fixed on the base 2 in a stable state.
[0035]
In the present invention, the wall panel 12 is built and assembled on the base 2 via an attachment hardware made up of a combination of the shaft body 9 and the bottom plate 5. That is, the shaft body 9 is inserted into the hole 13 provided on the small edge surface of the wall panel 12 to fix the bottom plate 5 to the small edge surface of the wall panel 12, and the bottom plate 5 is provided on the base 2 to the welding base material 2. It is configured by mounting and welding both. Therefore, in the wall panel mounting structure of the present invention, the mounting hardware is not exposed from the wall surface of the wall panel 12.
[0036]
【The invention's effect】
Since the wall panel mounting structure and its mounting bracket according to the present invention have the above-described structure and operation, they have the following great effects.
[0037]
(1) Compared to the conventional structure, the mounting hardware is not exposed on the surface of the wall panel, so the appearance is not impaired and the interior finish is not adversely affected. (2) Compared with the conventional structure, the safety mechanism against falling off of the wall panel is clearer and the safety is enhanced. (3) Since construction can be performed without using mortar, construction efficiency can be improved. (4) Since it is not necessary to provide a pit hole and there is no need to repair the pit hole, construction efficiency can be improved.
[0038]
(5) Since there is no repair of the pit hole, the color of the repaired portion does not change due to aging and the appearance is not impaired. (6) Since the notch provided in the bottom plate of the mounting hardware attached to the wall panel side is welded to the welding substrate using the chamfered portion of the wall panel, it is easy to attach the wall panel to the base. Certainty.
[0039]
(7) When the projection is provided on the shaft body, the projection can be inserted into the wall surface around the hole of the wall panel so that the shaft body and the bottom plate coupled thereto can be fixed to the wall panel. (8) When a rotation prevention mechanism is provided in the hole and shaft of the bottom plate, when the wall panel is built on the base, the place where the bottom plate is welded rotates in the direction opposite to the chamfered portion of the wall panel. Can be prevented. (9) Since a notch portion is provided in the bottom plate and the inner peripheral edge of the notch portion is welded to the welded substrate, the welding distance can be increased for a long time, and the weld portion protrudes from the surface of the wall panel. There is nothing. (10) Further, when the wall panel is about to fall in the welded direction, the inner side is welded from the end portion, so that the rotational force applied to the end portion can be reduced.
[0040]
(11) The mounting structure and its construction method according to the present invention form a notch that is recessed in the side portion of the bottom plate, and uses a chamfered portion provided at the lower edge of the wall panel. Since the welded portion is provided by welding the periphery to the welding base material, the following effects can be obtained. That is, since welding over a relatively long distance is possible, the welding strength can be increased. Welding work can be performed easily downward. In addition, it is easy to confirm whether welding has been performed reliably. Since the welded portion does not protrude from the surface of the wall panel, the appearance is not impaired. Even when the interior material is attached to the surface of the wall panel, the welding burr does not interfere.
[0041]
(12) Furthermore, when a force in an out-of-plane direction acts on the wall panel and thereby the wall panel tends to fall to the welded side, a rotational force with the end of the wall panel as a fulcrum is applied to the bottom plate. If there is a weld at the end, a large rotational stress may be applied to the weld and the weld may be broken. However, as described above, the weld has a notch that is a predetermined distance from the end. Since it is applied to the inner peripheral edge, the force applied to the welded portion can be reduced accordingly.
[0042]
(13) Since the wall panel mounting bracket according to the present invention is configured by standingly protruding the shaft body on the bottom plate, the structure is extremely simple, and the shaft body is provided on the small edge of the bottom portion of the wall panel. The bottom plate can be easily attached and fixed to the small edge surface of the wall panel by inserting it into the hole. When mounting holes are made by drilling holes in the bottom plate and inserting the shaft with the head protruding at the lower end into the holes, each part can be easily mass-produced, etc. These parts can be assembled and configured easily and reliably on site. Since the bottom plate is provided with a notch, welding can be performed using the inner peripheral edge of the notch, and the above-described many effects can be obtained.
[Brief description of the drawings]
FIG. 1 is an explanatory perspective view showing a main part of a wall panel mounting structure according to the present invention.
FIG. 2 is a perspective explanatory view showing a configuration of a mounting bracket.
FIG. 3 is a partial cross-sectional explanatory view of the wall panel mounting structure of FIG. 1;
FIGS. 4A, 4B, and 4C are perspective explanatory views showing examples of mounting brackets, respectively.
FIG. 5 is a cross-sectional explanatory view of a wall panel mounting structure according to a conventional wet structure.
FIG. 6 is an explanatory cross-sectional view of a wall panel mounting structure according to a conventional dry structure.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Anchor reinforcement 2 Base 3 Welding base material 4 Leveling mortar 5 Bottom plate 6 Leg part 7 Hole 8 Notch part 9 Shaft body 10 Head
11 Protrusion 12 Wall panel
12a Chamfer
13 hole 14 weld
51 Anchor rebar 52 Base
53 Reinforcing bars 54 Wall panels
55 Groove 56 Joint rebar
57 Angle steel 58 Zabori hole
59 Hook bolt

Claims (6)

In a structure in which a wall panel with a chamfered lower edge is mounted on a weldable building base or foundation, a bottom plate is inserted between the wall panel and the building base or foundation, and the wall panel on the bottom plate is chamfered. A notch is formed in a portion where the panel is not placed, and an inner peripheral edge of the notch is welded to a building base or a foundation, and a shaft body protruding upright on the bottom plate is provided. A wall panel mounting structure, wherein the wall panel is mounted on a building base or foundation by being inserted into a hole formed in a lower surface of the wall panel in a direction perpendicular to the surface. The mounting bracket used for the mounting structure according to claim 1, wherein a steel bar-shaped shaft body is erected on a bottom plate having a notch that can be welded. 3. The wall panel mounting bracket according to claim 2, wherein the bottom plate is constituted by a flat plate, a flat plate provided with legs only on one side edge on the notch side, or a flat plate provided with legs on both side edges. The shaft body provided with a bottom portion having an outer diameter larger than the outer diameter of the shaft body at the lower end and a bottom plate provided with a hole through which the shaft body can be inserted are combined to form the shaft body according to any one of claims 2 to 3. Either wall panel mounting bracket. The wall panel mounting bracket according to any one of claims 2 to 4, wherein a projection is provided at the tip of the shaft body, and the shaft body and a hole in the bottom plate are provided with a rotation stop. A hole is drilled in the lower edge of the wall panel with a chamfered edge on the lower edge in a direction perpendicular to the surface, and a shaft protruding upright on the bottom plate having a notch is inserted into the hole. The bottom plate is attached to the lower surface of the wall panel so that the notch is located in the chamfered portion, and the wall panel is built on a weldable building base or foundation, and then the chamfered wall panel is mounted. A construction method characterized in that a wall panel is mounted and fixed on a building base or foundation by welding a peripheral edge of a notch portion of a bottom plate using a section.

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