JP2007032168A - Metal fitting for backing steel material and construction method for panel foundation part - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a metal fitting for mounting a backing steel material with excellent workability and construction efficiency so that construction quality can be assured when a vertical wall panel is constructed on a concrete foundation. <P>SOLUTION: This metal fitting 18 for the backing steel material comprises a flat plate-like supporting piece 1 for placing the backing steel material and a suspended piece 2 extending from the generally center of the supporting piece vertically downward parallel with one side of the supporting piece. One end of the supporting piece further extends on both sides of the suspending piece. A fixing piece extending parallel with one side of the supporting piece and vertically downward is installed near the other end of the supporting piece, the end of the suspending piece extends parallel with the fixing piece, and the end of the fixing piece comprises fixed pieces 3, 4, 5 formed by bending in a direction perpendicular to the suspending pieces. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a mounting bracket for attaching a base steel material to a concrete foundation, which is required when a vertical wall panel is built on a concrete foundation, and a method for constructing a vertical wall panel using the same.

Lightweight cellular concrete wall panels (ALC panels) are more porous than so-called concrete plates, and thus have superior lightness and heat insulation properties. Utilizing these characteristics, building materials such as vertical walls for internal and external walls of buildings are used. Widely used as panels and roof panels. And when building a vertical wall panel such as an ALC panel on a concrete foundation, the foundation of the vertical wall panel is fixed to a base steel material made of angle steel with an L-shaped cross section, and this base steel material is used as the base concrete. The construction method is fixed and installed.
In order to fix the base steel material to the foundation concrete, a method of fixing by welding using a base steel material mounting bracket is employed.
As conventional techniques for attaching the base steel material to the foundation, methods shown in FIGS. 6 to 10 have been proposed. The method shown in FIGS. 6 to 8 is a method of installing a base steel material mounting bracket for fastening the base steel material to the base concrete before placing the base concrete (see, for example, Patent Document 1). Moreover, the method shown in FIG.9 and FIG.10 is the construction method which installs the mounting bracket of the base steel material for fastening a base steel material to a foundation concrete after casting and hardening a base concrete (for example, refer patent document 2). .)

  That is, in the example shown in FIG. 6, the anchor rebar 61 is installed at the time of placing the concrete concrete 31, and the anchor rebar 61 is provided with an L-shaped ruler angle through the angle pieces 35 and 36 for level adjustment. This is a method of attaching the underlying steel material 60 for panel attachment. The angle piece 35 embedded in the foundation concrete 31 and the horizontal flange 60a of the base steel material 60 are welded and fixed via an angle piece 36 for level adjustment, and the vertical flange 60b and the vertical wall panel 32 are connected via a lightning plate 33. A vertical wall panel mounting structure that is fixed by bolts 34 is employed.

In the example shown in FIG. 7, the anchor reinforcing bar 61 is installed when the foundation concrete 31 is placed, the anchor reinforcing bar 61 is bent and the level is adjusted, and then the base steel material 60 for panel attachment is attached to the anchor reinforcing bar 61. Is the method. A base steel material 60 having an L-shaped ruler angle for attaching the vertical wall panel 32 is used for the anchor reinforcing bar 61 embedded in the fabric foundation and projecting from the upper surface thereof. It is made of a steel material having an L-shaped cross section composed of 60a and a vertical flange 60b. The horizontal flange 60a is placed in the longitudinal direction of the upper end of the foundation concrete 31 forming the cloth foundation, and is welded and fixed to the bent anchor reinforcing bar 61. A vertical wall panel mounting structure in which the vertical flange 60b and the vertical wall panel 32 are fixed by bolts 34 via a lightning plate 33 is employed.
In the example shown in FIG. 8, the anchor rebar 61 is installed when the foundation concrete 31 is placed, and the base steel material 60 for panel attachment is attached to the anchor rebar 61 via the fixing bracket 40 that also serves as a level adjustment hardware. It is. A horizontal flange 60 a of a base steel material 60 having an L-shaped ruler angle is placed on the horizontal portions 41 and 42 of the fixing bracket 40. In this case, it is desirable to level the indoor side horizontal portion 42 of the fixture 40 and the end of the lateral flange 60a of the base steel material 60, whereby at least the outdoor horizontal portion 41 of the fixture 40 and the base steel material 60 side. It becomes possible to weld the flange 60a downward.

In the example shown in FIG. 9, after placing the concrete foundation 31, a downward hole is made in the top surface of the foundation concrete 31, the concrete anchor 44 is driven in, the level is adjusted with the level bolt 45, and the vertical wall panel is attached to the level bolt 45. It is a method of attaching the base steel material 60 of the.
In this example, an anchor 48 is embedded in the vertical wall panel 32, and the anchor 48 and the lightning plate 33 are fastened with bolts 34 and fixed to the base steel material 60.
In the example shown in FIG. 10, a mounting bracket 46 in which a rod-shaped member 47 protrudes from a pedestal 49 is prepared, a hole 62 is formed in the short side edge of the vertical wall panel 32, and the rod-shaped mounting bracket 46 is formed in the hole 62. In this method, the member 47 is inserted, the foundation concrete 31 is placed, the vertical wall panel 32 is placed on the foundation concrete 31, and the base 49 of the mounting bracket 46 is attached to the upper surface of the foundation concrete 31 using the gun pins 50. .
In this method, the bar-shaped member 47 of the mounting bracket 46 is inserted into the hole 62 of the vertical wall panel 32, and the pedestal 49 of the mounting bracket 46 is fixed to the foundation concrete 31 using the gun pins 50. Is adopted on the foundation concrete 31.
JP 2003-213793 A Japanese Patent Laid-Open No. 11-117433

However, before the foundation concrete is placed, in the construction method of installing the base steel material mounting bracket for bonding the base steel material to the base concrete, the welding of the anchor reinforcing bar and the L-shaped ruler angle is welded upward from below. Since it is necessary to carry out upward welding, workability is inferior, reliability of welding strength is low, adjustment of height level is difficult, and work space is narrow, so it is difficult to rust prevent anchor bars. There were problems such as being.
Specifically, in the method shown in FIG. 6, the anchor hardware is attached to the inside of the formwork for placing the foundation concrete using a screw or the like, or is attached to the reinforcing bar reinforcing the foundation with an iron wire or the like. It is done. However, it is difficult in terms of work to attach the anchor hardware to the inside of the mold in the direction in which the bottom of the L shape is inverted upside down. In addition, when the reinforcing bar is tightly bound with a steel wire or the like, the position of the anchor hardware may be displaced due to the flow of the concrete during the placement of the concrete, and may be buried in the concrete, making it impossible to attach the base steel material.
In the method shown in FIG. 7, it takes time to bend the anchor reinforcing bar, and it is difficult to attach the base steel material to the anchor reinforcing bar, and it is difficult to ensure the construction quality. Moreover, since the panel's own weight at the time of panel construction will be received only by anchor reinforcement, it is difficult to ensure safety during construction due to insufficient strength.
The method shown in FIG. 8 is a method for improving the workability of the welding work shown in FIG. 6 using the level adjusting hardware, but the work of bending the reinforcing bars remains, and the workability is completely improved. It has not been.

In addition, in the construction method in which foundation steel is mounted and the base steel material mounting bracket is installed to harden the base steel material to the base concrete after hardening, the welding of the anchor rebar and the L-shaped ruler angle is welded upward from the bottom. Therefore, the workability is inferior because it is necessary to carry out upward welding, the reliability of the welding strength is low, the adjustment of the height level is difficult, and the work space is narrow, so the anticorrosion treatment of the anchor rebar is There were problems such as difficulty.
Specifically, in the method shown in FIG. 9, it is difficult to make a pilot hole for inserting a concrete anchor on the upper surface of the foundation concrete vertically, and when the pilot hole is opened obliquely, the level bolt Since the upper surface of the steel plate does not become horizontal, work such as sandwiching a liner is required when adjusting the level of the base steel material, which takes time.
Further, the method shown in FIG. 10 has a problem in that it is necessary to smooth the upper surface of the foundation when placing the foundation concrete, which takes man-hours. Moreover, when an anchor pin is driven into the end portion in the width direction of the foundation concrete, the concrete is cracked, making it difficult to ensure construction quality.
The object of the present invention is to solve the above-mentioned problems, and in the process of attaching the base steel material required when building the vertical wall panel to the concrete foundation to the concrete foundation, the workability and construction efficiency are good, the attachment strength and It is to be able to ensure construction quality such as mounting accuracy.

  In order to solve the above problems, the mounting bracket for the base steel material of the present invention includes a flat plate-like support piece on which the base steel material is placed, and extends substantially from the center of the support piece in parallel to one side of the support piece and vertically downward. One end of the support piece has a fixed piece further extended on both sides sandwiching the drooping piece, and one side of the support piece is in the vicinity of the other end of the support piece. A fixing piece that extends in parallel with and vertically downward, the tip of the hanging piece extends parallel to the fixing piece, and the tip of the fixing piece is bent in a direction perpendicular to the hanging piece. It was decided to have a fixed piece.

  If the base steel material mounting bracket has such a structure, the level of the base steel material can be easily set, the mounting to the mold is easy, the foundation concrete is not damaged, and the welding work is performed before the base steel material is installed. Therefore, workability and construction efficiency are good, and construction quality can be ensured.

In the base steel material mounting bracket of the present invention, the length of the two extending sides of the support piece and the tip of the fixing piece are configured to form a plane perpendicular to the support piece. Is preferred.
This is because the distance from the concrete formwork panel is kept constant and can be firmly fixed to the concrete formwork panel.

The fixing piece preferably has a hole.
In the base steel material mounting bracket of the present invention, it is preferable that the tip of the hanging piece is extended in parallel to one side of the support piece and in directions opposite to each other.
This is because, when embedded in concrete, the fixing strength increases. Moreover, it is because the metal fitting which has sufficient bending strength is obtained from the minimum material by forming a hole part by bending from a flat plate material.

Furthermore, in the base steel material mounting bracket of the present invention, the hanging piece may have a screw hole. Further, a beveled screw can be attached to a screw hole provided in the hanging piece via a fixed screw rod.
This is to facilitate fixing to the concrete formwork panel.

The panel foundation construction method of the present invention includes a flat plate-like support piece on which a base steel material is placed inside a foundation concrete formwork, and substantially downward from the center of the support piece and parallel to one side of the support piece. It has a vertically extending drooping piece, one end of the support piece has a fixed piece further extended on both sides sandwiching the drooping piece, and the support piece is in the vicinity of the other end of the support piece. A fixing piece extending in parallel with one side of the piece and extending vertically downward; a tip of the drooping piece extending in parallel with the fixing piece; and a tip of the fixing piece perpendicular to the dripping piece. A fixed piece bent in the direction is arranged, and a fixed screw rod with a captive screw is fitted into a screw hole provided in the hanging piece, and fixed to the foundation concrete formwork via the mounting rod. Later, the construction method of placing foundation concrete was adopted.
If such a panel foundation construction method is employed, workability and construction efficiency are good, and construction quality can be ensured.

  ADVANTAGE OF THE INVENTION According to this invention, in the method of attaching base steel material to a concrete foundation, workability | operativity and construction efficiency are good and it can make it possible to ensure favorable construction quality. Moreover, compared with the conventional case, (a) the level of the installation position of the base steel material is easy, (b) the mounting to the mold is easy, (c) the foundation concrete is not damaged, and (d ) Advantages such as no need for welding work before mounting the base steel.

The base steel material mounting bracket of the present invention has a flat plate-like support piece on which the base steel material is placed, and a hanging piece that extends from substantially the center of the support piece in parallel to one side of the support piece and vertically downward. One end of the support piece has a fixed piece further extended on both sides sandwiching the hanging piece, and in the vicinity of the other end of the support piece, parallel to one side of the support piece and downward. The fixing piece extends vertically, and the tip of the drooping piece extends in opposite directions in parallel to the fixing piece, and one tip of the fixing piece is bent in a direction perpendicular to the drooping piece. It has been.
And the front-end | tip part of the extending part of 2 sides of a support piece and the front-end | tip part of the said fixing piece are comprised by the length which comprises a plane perpendicular | vertical to the said support piece. Moreover, the hanging piece has a screw hole, and a fixed screw rod to which a captive screw is attached can be screwed into the screw hole.
Hereinafter, the present invention will be described in detail with reference to the drawings. In the following drawings, the scale is not necessarily drawn accurately for easy understanding.

FIG. 1 is an external perspective view of a base steel fitting according to the present invention, and FIG. 2 is a cross-sectional view taken along line AA ′ of FIG.
The base steel material mounting bracket 16 shown in FIG. 1 extends from the substantially center of the flat plate-like support piece 1 for mounting the base steel material of the vertical wall panel in parallel to one side of the support piece 1 and vertically downward. The support piece 1 has one end of the support piece 1, and both sides sandwiching the drop piece 2 are further extended to form fixed pieces 3 and 4. The other end of the support piece 1 In the vicinity, a fixing piece 7 extending parallel to one side of the support piece 1 and extending vertically downward is provided, and the tip of the hanging piece 2 extends in parallel to the fixing piece 7 and in opposite directions to be fixed. Pieces 8 and 9 are formed. Further, at least one fixing piece 9 extending from the tip of the hanging piece 2 is bent in a direction perpendicular to the hanging piece 2 to form a fixed piece 5.
The length of the hanging piece 2 is not particularly limited, and it is preferable that the tips of the fixed pieces 3 and 4 and the fixed piece 5 form a triangle as large as possible.
It is preferable that the length of the support piece 1 including the fixed pieces 3 and 4 is made in accordance with the width of the concrete foundation to be constructed, that is, the interval between the concrete form panels, because the construction becomes extremely easy.
The base steel fitting 16 made of the support piece 1, the hanging piece 2, the fixing pieces 3, 4, 5 and the fixing pieces 8, 9 can be easily made by punching and bending a thin steel plate.

  Further, the front ends 3 a and 4 a of the fixing pieces 3 and 4 on the two sides of the support piece 1 and the front end portion 5 a of the fixing piece 5 provided at the front end portion of the fixing piece 2 are perpendicular to the support piece 1. It is configured to have such a length as to configure. Therefore, if it is set on the concrete form panel so as to be in contact with the fixing pieces 3, 4 and 5, the support piece 1 can be stably fixed while maintaining a right angle with the concrete form panel.

  A screw hole 20 is provided near the center of the hanging piece 2. The screw hole 20 is screwed with the fixing screw rod 6 to which the umbrella screw 13 is attached, and is fixed to the foundation concrete formwork 10 by the nut 14 via the fixing screw rod 6. In this case, if the umbrella surface of the umbrella screw 13 is adjusted to be flush with the tips 3a, 4a and 5a of the fixed pieces 3, 4 and 5, the base concrete formwork 10 can be more firmly stabilized. And can be fixed.

In the vicinity of the other end of the support piece 1, there is provided a fixing piece 7 extending parallel to one side of the support piece 1 and vertically downward. The fixing piece 7 is preferably provided with a hole 17 and has a function of firmly fixing the fixing piece 7 and 9 when embedded in the concrete together with the fixing pieces 8 and 9.

The construction procedure using the base steel fitting 16 will be described with reference to FIGS.
First, two concrete form panels 10 are prepared, and one of them is provided with a straight line 19 and a through hole 21 indicating a concrete placement level (see FIG. 3A).
Next, between the two concrete mold panels 10, 10, the base steel fitting 16 of the present invention is leveled and set at a predetermined position (see FIG. 3B). After the fixing screw rod 6 is inserted into the through-hole 21 of the concrete form panel 10 and the mounting bracket 16 of the base steel material of the present invention is set between the two concrete form panels 10, 10, the foundation is tightened by tightening the nut. Fix to the concrete mold 10.

  Next, concrete 11 is placed between the two concrete form panels 10 and 10 (see FIG. 3C), and the concrete surface is aligned with a straight line 19 indicating a predetermined placement level to solidify the concrete. (See FIG. 4D.) The level adjustment can be easily adjusted by aligning the position of the support piece 1 or the fixing pieces 3 and 4 of the mounting member 16 of the base steel material with the straight line 19 indicating the concrete placement level provided on the concrete form panel 10. it can

After the concrete is solidified, when the nut 14 is loosened and the foundation concrete form 10 is removed, the foundation concrete 12 with the base steel mounting bracket 16 embedded in the surface is obtained as shown in FIG.
The base steel material 18 is welded and fixed to the base steel material mounting bracket 16 on the surface of the foundation concrete 12 obtained in this way (see FIG. 4F).
FIG. 5 shows a cross section taken along line BB ′ in FIG. That is, the support piece including the fixed piece of the mounting bracket 16 for the base steel material is exposed on the surface of the foundation concrete 12, and the base steel material 18 is fixed by welding to the exposed support piece and the fixed piece. In the figure, reference numeral 15 denotes a welding beat.
After constructing such a foundation, for example, an ALC panel that becomes a vertical wall can be built using, for example, the base steel material 18.

  According to the present invention, the level of the installation position of the base steel material is easier than before, the mounting to the mold is easy, the foundation concrete is not damaged, and the welding work before the base steel material is attached Can be expected, and the workability and construction efficiency are good, and the construction quality can be secured, so that the use of the ALC panel can be further expanded.

It is a figure which shows the external appearance perspective view of the mounting bracket of the base steel material concerning this invention. It is a figure which shows sectional drawing along line A-A 'of the attachment metal fitting of FIG. It is process drawing explaining the method of driving in and constructing foundation concrete. FIG. 4 is a process diagram following FIG. 3. It is a figure which shows the cross section along line B-B 'of FIG.4 (f). It is a figure which shows an example of the prior art for attaching base steel material to a foundation. It is a figure which shows the other example of the prior art for attaching base steel material to a foundation. It is a figure which shows another example of the prior art for attaching base steel material to a foundation. It is a figure which shows another example of the prior art for attaching base steel material to a foundation. It is a figure which shows another example of the prior art for attaching base steel material to a foundation.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Supporting piece 2 Hanging piece 3, 4, 5 Fixing piece 6 Fixing screw rod 7, 8, 9 Fixing piece 10 Concrete form panel 11 Concrete 12 Concrete foundation 13 Umbrella screw 14 Nut 15 Welding beat 16 Mounting bracket 17 of base steel material 17 Hole 18 Substrate steel material 19 Straight line indicating placement level of foundation concrete 20 Screw hole 21 Through hole

Claims (7)

  A mounting bracket for mounting a base steel material for mounting a vertical wall panel on foundation concrete, a flat plate-like support piece on which the base steel material is placed, and parallel to one side of the support piece from substantially the center of the support piece And one end of the support piece has a fixed piece that is further extended on both sides sandwiching the drop piece, in the vicinity of the other end of the support piece. Comprises a fixing piece extending parallel to one side of the support piece and vertically downward, the leading end of the hanging piece extending in parallel to the fixing piece, and the leading end of the fixing piece further comprising the hanging piece A base metal mounting bracket having a fixed piece bent in a direction perpendicular to the piece.   The tip of the extending part on two sides of the support piece and the tip of the fixing piece are configured to have a length that forms a plane perpendicular to the support piece. Mounting bracket for the base steel described.   The base steel member mounting bracket according to claim 1, wherein the fixing piece has a hole.   The base metal member mounting bracket according to any one of claims 1 to 3, wherein the hanging piece has a screw hole.   The mounting bracket for the base steel material according to any one of claims 1 to 4, wherein a tip of the hanging piece is extended in parallel to one side of the support piece and in directions opposite to each other.   The mounting bracket for a base steel material according to any one of claims 1 to 5, wherein a captive screw is attached to a screw hole provided in the hanging piece via a fixing screw rod. On the inside of the foundation concrete formwork, it has a flat plate-like support piece on which the base steel material is placed, and a hanging piece extending from the substantially center of the support piece in parallel to one side of the support piece and vertically downward, One end of the support piece is further extended on both sides of the hanging piece, and a fixing piece extending in the vicinity of the other end of the support piece is parallel to one side of the support piece and vertically downward. The tip of the drooping piece has a fixing piece extending parallel to the fixing piece, and the tip of the fixing piece is arranged with a fixing piece bent in a direction perpendicular to the drooping piece. Then, after fixing a fixed screw rod attached with a captive screw in a screw hole provided in the hanging piece and fixing it to the formwork for the foundation concrete through the attachment rod, placing the foundation concrete The construction method of the panel foundation part which is characteristic.

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