JP2003321845A - Reinforcement-steel frame core unit for foundation, and connection structure for the unit - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To simplify a field work when forming a foundation and form a high strength foundation in a simple constitution. <P>SOLUTION: A reinforcement-steel frame core member unit 10 for a foundation with a high strength can be formed by the long steel foundation frames 1, longitudinal reinforcements 2 arranged in parallel with the long steel foundation frames 1, and the connecting members 3 integrally connecting the steel foundation frames 1 and the longitudinal reinforcements 2. In a construction site, the reinforcement-steel frame core member unit 10 for a foundation is installed and the mutual units 10 are only connected. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a basic rebar / steel frame core unit and a basic rebar, which serve as a core material of a building foundation.
The present invention relates to a connection structure of steel frame core units.

[0002]

2. Description of the Related Art Conventionally, in order to form the foundation of a building, at the site, a reinforcing bar work is done by connecting a plurality of main bars with stirrups and connecting the ends of the main bars with a connecting bar. After completing the reinforcement of the foundation in this way,
Build the formwork, attach the anchor bolt support fittings to the formwork, hang the anchor bolts on the anchor bolt support fittings to support, and then place concrete in the formwork to form the foundation. There is.

By the way, in the conventional example as described above,
Since all the reinforcing bar work is done on site, there is a problem that the site work takes time and the site work becomes complicated, and the anchor bolts are only hung and supported by the anchor bolt support fittings attached to the formwork. , When placing concrete, concrete adheres to the upper end of the anchor bolt that projects above the concrete placing surface, or the concrete hose hits the upper end of the anchor bolt during concrete pouring. The anchor bolt may tilt.

When the concrete adheres to the upper end of the anchor bolt projecting above the concrete placing surface or the anchor bolt tilts, the concrete adheres to the anchor bolt after the concrete hardens. There will be a problem that it will be difficult for the nuts to screw when attaching pillars, pillar mounting metal fittings, bases and base metal fittings to the anchor bolts in post-installation, and the posture will be forced by hitting the anchor bolts with a hammer. There is a problem in that the position must be adjusted by adjusting the position.

Further, in the prior art, since the core material of the foundation was made by assembling the reinforcing bars, the reinforcing bars move due to the flow pressure of concrete during concrete pouring,
In some cases, the reinforcing bar assembly may not be located at the designed regular position within the foundation to be formed, and the foundation strength as designed cannot be exhibited.

Further, in the past, in order to form a high-strength foundation, the number of reinforcing bars used such as the main bars is increased and the reinforcing bars are assembled on site, so that the reinforcing bar assembly work on site is more troublesome. There is a problem that it will be a task.

[0007]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned points, and it is possible to simplify on-site work in forming a foundation, and to form a high-strength foundation with a simple structure. Furthermore, it is possible to prevent concrete from adhering to the upper end of the anchor bolt during concrete pouring, and to prevent the concrete hose from colliding with the anchor bolt and tilting. Providing a foundation rebar / steel core material unit and a foundation rebar / steel core material unit connection structure that can be framed in a state and can be embedded at the designed position without shifting due to the concrete flow pressure during concrete pouring This is an issue.

[0008]

Means for Solving the Problems To solve the above-mentioned problems, a basic rebar / steel core material unit according to the present invention comprises a long basic steel frame 1 made of steel and a long basic steel frame 1. It is characterized in that it is composed of reinforcing bar main bars 2 arranged in parallel, and a connecting member 3 for integrally connecting the basic steel frame 1 and the main bars 2. With such a configuration, a long steel frame for foundation 1 made of steel frame, a main bar 2 made of reinforcing steel arranged in parallel to the long steel frame 1 for foundation, and a steel frame for foundation integrally connected with this. Reinforcing bar / steel core material unit for foundation 1 with high strength
0 can be formed, and at the site, it is only necessary to install the unitized rebar / steel core material unit 10 and connect the foundation rebar / steel core material units 10 to each other. Construction work can be significantly reduced and the strength of the foundation can be improved.

Further, it is preferable that the foundation steel frame 1 is provided with support legs 5 projecting downward. With such a configuration, the foundation steel frame 1 can be held at a predetermined height position from the installation surface by the support legs 5.

Further, the anchor bolt 6 is projected upward from the upper surface of the foundation steel frame 1, and the cylindrical body 7 having an upper opening so as to surround the anchor bolt 6 is oriented upward on the upper surface of the foundation steel frame 1. It is preferable to project. With such a configuration, the reinforcing bar / steel core material unit 10 for foundation
The anchor bolt 6 can be installed at the same time only by installing the anchor bolt 6. Since the anchor bolt 6 is surrounded by the cylindrical body 7 having an opening at the top, concrete adheres to the anchor bolt 6 during concrete pouring. This can be prevented by the tubular body 7, and the tubular body 7 can prevent the hose for concrete placing from colliding with the anchor bolt 6 during concrete pouring. Further, since the anchor bolt 6 is provided so as to project from the steel frame 1 for foundation, the strength of the anchor bolt 6 becomes strong.

Further, it is preferable that the lower end portion of the anchor bolt 6 constitutes a support leg 5 protruding downward from the foundation steel frame 1. With such a structure, the anchor bolt 6 and the support leg 5 can be shared by a common member.

The connecting structure of the reinforcing bar / steel core material unit for foundation of the present invention is the reinforcing bar / steel core material unit for foundation 10 and the reinforcing bar / steel core core for foundation according to any one of claims 1 to 5. In the connection structure with the material unit 10, the basic steel frames 1 of the adjacent basic reinforcing bar / steel core material units 10 are integrally connected by the basic steel frame connecting hardware 8 and the adjacent basic reinforcing bar / steel core material It is characterized in that the main bars 2 of the unit 10 are connected by a connecting bar 9. With such a structure,
The steel core units 10 can be firmly and integrally connected to each other in a rigid state to easily form a skeleton of the foundation, and the positional shift does not occur due to the flow pressure of concrete during concrete pouring.

An anchor bolt 6 is provided so as to project upward from the upper surface of the foundation steel-frame connecting hardware 8 and a cylindrical body 7 having an upper opening so as to surround the anchor bolt 6 is provided on the upper surface of the foundation steel frame 1 upward. It is preferable to project toward. In this way, by arranging the steel-frame-connecting hardware 8 for foundation that connects the steel-frames for foundation 1 to each other in the corners and pillar streets of the building,
The anchor bolts 6 can be easily and surely positioned accurately on the corners and pillars of a building. Moreover, since the anchor bolts 6 are surrounded by the tubular body 7 having an opening at the upper side, it is possible to apply concrete to the concrete. At this time, it is possible to prevent concrete from adhering to the anchor bolt 6 by the tubular body 7, and it is possible to prevent the hose for concrete placing from colliding with the anchor bolt 6 at the time of concrete pouring by the tubular body 7. . Further, since the anchor bolt 6 is provided so as to project from the foundation steel-framed connecting hardware 8 that couples the rigid foundation steel frames 1 to each other, the strength of the anchor bolt 6 is strengthened.

[0014]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be described below based on the embodiments shown in the accompanying drawings.

FIG. 1 shows a reinforcing bar / steel frame core material unit 10 for a foundation of the present invention. This basic rebar / steel frame core unit 10 includes a long basic steel frame 1 made of steel, a main reinforcing bar 2 arranged in parallel with the long basic steel frame 1, a basic steel frame 1 and a main reinforcing bar 2. And a connecting member 3 for integrally connecting and.

The foundation steel frame 1 is made of steel frame and has a U-shape in cross section with a lip in the embodiment shown in the accompanying drawings, but may have an H-shape in cross section or any other cross section.

A plurality of main bars 2 made of reinforcing bars are arranged around the foundation steel frame 1, and the plurality of main bars 2 are integrally connected and fixed by the reinforcing bars 4 made of reinforcing bars at a plurality of longitudinal positions. The rebar is assembled. The main bar 2 and the band 4 are integrally connected and fixed by welding. One end of a connecting member 3 made of steel such as a reinforcing bar, a steel plate, and a steel frame is fixed to the steel frame 1 for foundation by welding and integrally projected. In the embodiment shown in the accompanying drawings, the connecting member 3 is integrally projecting outward from both sides of the web portion 11 of the foundation steel frame 1, and the foundation integrally projecting outward from both sides of the web portion 11. Both ends of the web portion 11 of the foundation steel frame 1 among the plurality of main bars 2 in which the tip end of the connecting material 3 protruding from the steel frame 1 is arranged around the foundation steel frame 1 and is integrally connected and fixed by the stirrups 4. It is integrally connected and fixed to the main bar 2 located at. Anchor bolt insertion holes 13 are provided in the upper and lower flange portions 12 of the foundation steel frame 1, and the anchor bolt insertion holes of the flange portion 12 and the web portion 11 of the foundation steel frame 1 and the upper flange portion 12 are provided. Bolt insertion holes 14 are provided on both sides of 13.

In this way, a plurality of main bars 2 are arranged in parallel with the foundation steel frame 1 and the foundation steel frame 1 and the main bars 2 are integrally connected by a connecting member 3 to be assembled to form a foundation reinforcing bar / steel frame core material unit. 10 is formed in advance in a factory, and the reinforcing bar / steel core material unit for foundation 10 as shown in FIG. 1 and FIG.

In the construction at the site, first, the place where the foundation is to be formed is excavated, and the reference surface 15 adjusted to a predetermined level is formed at the place corresponding to the pillar position by the mortar on the groove bottom of the foundation excavation groove, Next, a reference plate 16 having a nut 18 welded on its upper surface is placed on the reference surface 15 and fixed to the reference surface 15 by a peg 17 such as a concrete nail. In this case, the reference plate 16 is fixed by measuring so that the center of the nut 18 coincides with the position of the pillar of the building.

An anchor bolt 6 is attached to the base rebar / steel core material unit 10 at the site as shown in FIG.

A nut 23 is screwed into the anchor bolt 6, and the anchor bolt 6 is inserted into the anchor bolt insertion hole 13 provided in the upper and lower flange portions 12 of the foundation steel frame 1,
The nut 23 is located on the lower surface side of the flange portion 12 below the foundation steel frame 1, and the clip bar 19 made of a reinforcing bar is erected between the main bars 2 facing each other via the anchor bolt 6 so that the clip bar 19 A cross-section C provided at the middle portion of the clip bar 19 by fixing both ends to both main bars 2 by an arbitrary fixing means.
The anchor bolt 6 is fitted and supported in the clip portion 20 having a character shape. In this way, the anchor bolt 6 is attached to the foundation steel frame 1.
The portion projecting downward from the foundation steel frame 1 serves as the support leg 5.

Reinforcing bar for foundation with anchor bolts 6 attached
As shown in FIG. 4, the steel frame core unit 10 is built by screwing the lower end portion of the anchor bolt 6 into the nut 18 provided on the reference plate 16, and at this time, the nut provided on the anchor bolt 6 is installed. The height adjustment is performed by adjusting the support position of the flange portion 12 below the foundation steel frame 1 by 23.

At the projecting position of the anchor bolt 6 on the upper surface of the flange portion 12 on the foundation steel frame 1, a rectangular tubular body 7 is integrally formed at the central portion of the fixed horizontal piece 22 as shown in FIG. The projecting column base box 21 is attached as shown in FIGS. 5 and 6, and the fixed lateral piece 22 of the column base box 21 is attached.
Both ends of the are fixed to the upper flange portion 12 with bolts using the bolt insertion holes 14. And the fixed horizontal piece 2
The hole provided in the central portion of 2 communicates with the anchor bolt insertion hole 13 provided in the upper flange portion 12, and the anchor bolt 6 is inserted therein. By fixing the column base box 21 to the upper flange portion 12 of the foundation steel frame 1 in this manner, the anchor bolt 6 protruding upward from the upper flange portion 12 is surrounded by the tubular body 7. Pedestal box 21
The cylindrical body 7 has a size such that the leg portion at the lower end portion of the column is fitted in the lower portion of the column directly or in the case where the leg portion is provided at the lower end portion of the column.

Adjacent foundation rebar / steel frame core unit 1
The end portions of 0 integrally connect the adjacent basic steel frames 1 to each other by the basic steel frame connection hardware 8 and the adjacent main bars 2
The connecting lines 9 connect the two.

Here, the foundation steel frames 1 of the adjacent foundation reinforcing steel / steel frame core material units 10 are connected to each other by the foundation steel frame connecting hardware 8.
In connecting with each other, the flange portions 12 of the foundation steel frame 1 or the web portions 11 of the foundation steel frame 1 are flat-shaped, and the cross section L
By using the bolt insertion hole 14, the steel frame connecting hardware for foundation 8 having a rectangular shape, a T-shape in cross section, and a cross shape in cross section is connected by bolts and nuts. FIG. 8 shows an example in which the upper and lower flange portions 12 of the basic steel frames 1 of the adjacent basic reinforcing bar / steel frame core units 10 are respectively connected by the basic steel frame connecting hardware 8. When the anchor bolts 6 are attached to the connecting portions of the foundation steel frames 1 of the adjacent foundation reinforcing steel / steel core material units 10, at least the flange portions of the foundation steel frames 1 of the adjacent foundation reinforcing steel / steel core material units 10 12 are connected to each other by a steel frame connecting hardware 8 for a foundation, and the upper flange portion 12
The above-mentioned FIG.
A column base box 21 in which a tubular body 7 having a rectangular tube shape is integrally projectingly provided in the central portion of the fixed horizontal piece 22 as shown in FIG. 2, and both ends of the fixed horizontal piece 22 of the column base box 21 are adjacent to each other. The flange portion 12 on the steel frame 1 is connected with bolts and nuts using the bolt insertion holes 14. In addition, a flat plate-shaped foundation that connects the lower flange portions 12 to each other is provided with a hole through which the anchor bolt 6 is inserted in the central portion of the flat-plate-shaped steel frame connecting hardware 8 that connects the lower flange portions 12 to each other. The anchor bolt 6 is passed through the hole of the steel frame connecting hardware 8, the anchor bolt 6 is inserted through the hole provided in the fixed lateral piece 22 of the column base box 21, and the nut 23 is positioned on the lower surface side of the fixed lateral piece 22. The lower end portion of the base plate 6 is supported, and the nut 23 provided on the anchor bolt 6 adjusts the support position of the flange portion 12 below the foundation steel frame 1 to adjust the height.

Further, in order to connect the main bars 2 with the connecting bar 9, they are connected by welding or a binding wire.

As shown in FIG. 6, the column base box 21 is used.
The cover plate 24 is placed on the upper end of the cylindrical body 7 having a rectangular tubular shape.
The upper end portion of the anchor bolt 6 is inserted into the hole provided in 4, and the nut 25 is screwed into the anchor bolt 6 to press and fix the lid plate 24 placed on the upper edge of the tubular body 7 from above. 6 may be fixed. By doing so, concrete can be surely prevented from entering the tubular body 7, and there will be no trouble when the leg portion of the lower end portion of the column is fitted into the tubular body 7 as described later. .

As described above, the basic rebar / steel frame core material units 10 are firmly connected together in a rigid state to form a basic skeleton.

After the foundation frame is formed in this way, the formwork is installed, and concrete is placed between the formwork, whereby the reinforcing bar / steel core material units 10 for the foundation are firmly and rigidly integrated. To form a foundation whose core is the framework of the foundation.

By the way, since the foundation skeleton is constructed by integrally connecting the reinforcing bar / steel core material units 10 for foundation in a rigid and rigid state, the pressure for placing concrete when placing concrete, Alternatively, even if a hose for concrete pouring collides with the reinforcing bar / steel core material unit 10 for foundation, the reinforcing bar / steel core material unit 10 for foundation is not deformed or moved.

Further, since the anchor bolt 6 is surrounded by the tubular body 7, the concrete of the anchor bolt 6 does not adhere to the portion projecting upward from the upper surface of the foundation steel frame 1, and the concrete is not poured during the pouring of concrete. The hose for casting can be prevented from colliding with the anchor bolt 6 by the tubular body 7 so that the anchor bolt 6 is not tilted or displaced.

After the foundation is formed as described above, the lower end of the column is connected to the upper end of the anchor bolt 6, and in this case, the lower end of the column is directly connected to the lower end of the column or the leg is attached to the lower end of the column. If provided, the leg portion is the cylindrical body 7 of the column base box 21.
The anchor bolt 6 can be attached to the lower end portion of the column while being fitted into and being temporarily supported.

[0033]

As described above, in the invention according to claim 1 of the present invention, a long foundation steel frame made of a steel frame and a reinforcing bar main bar arranged in parallel to the long foundation steel frame. Since it consists of a connecting material that integrally connects the basic steel frame and the main bar, the long basic steel frame made of the steel frame and the main bar made of the reinforcing bar arranged parallel to the long basic steel frame, and this It is possible to form a strong rebar / steel core unit unit for the foundation with the steel rebar connected to the base, and at the site, install the unit rebar / steel core unit unit to form the rebar / steel core for the foundation. It is only necessary to perform the work of connecting the material units to each other, which can significantly reduce the work of the foundation work on site and improve the strength of the foundation.

According to the invention of claim 2, in addition to the effect of the invention of claim 1, since the supporting leg projecting downward is provided on the foundation steel frame, the foundation steel frame is supported. The legs can be held at a predetermined height from the installation surface, and the foundation steel frame can be accurately arranged at a predetermined position in the foundation.

According to the invention of claim 3, in addition to the effect of the invention of claim 1 or claim 2, the anchor bolt is projected upward from the upper surface of the foundation steel frame, Since a cylindrical body with an open upper side is projected upward so as to surround the anchor bolt on the upper surface of the steel frame for construction, the anchor bolt can be installed at the same time only by installing the reinforcing bar / steel core material unit for foundation. And also
Since the anchor bolt is surrounded by a cylinder with an open top, the cylinder can prevent concrete from adhering to the anchor bolt during concrete pouring, and a hose for concrete pouring can be used during concrete pouring. It is possible to prevent the collision with the anchor bolt by the tubular body, the anchor bolt can be arranged at the correct position of the foundation, and the anchor bolt protrudes from the steel frame for the foundation. The strength of the bolt becomes stronger.

According to the invention of claim 4, in addition to the effect of the invention of any one of claims 1 to 3, the lower end of the anchor bolt projects downward from the foundation steel frame. Since the supporting leg is configured as described above, the anchor bolt and the supporting leg can be shared by a common member, the structure can be simplified and the number of members can be reduced.

Further, in the invention according to claim 5, a connecting structure for connecting the basic rebar / steel core material unit and the basic rebar / steel core material unit according to any one of claims 1 to 4 The basic steel frames of the adjacent basic reinforcing bar / steel core material units are integrally connected by the basic steel frame connecting hardware, and the main bars of the adjacent basic reinforcing bar / steel core material units are connected by the connecting bar. As a result, it is possible to connect the reinforcing bar / steel core material units for foundation firmly and integrally in a rigid state to easily form the framework of the foundation, and do not dislocate due to the flow pressure of concrete during concrete pouring. It is possible to embed the reinforcing bar / steel core unit in the correct position of the foundation to be formed.

According to the invention of claim 6, in addition to the effect of the invention of claim 5, an anchor bolt is provided so as to project upward from the upper surface of the steel-frame-connecting metal object for foundation,
Since a tubular body having an opening at the upper side is projected upwardly so as to surround the anchor bolt on the upper surface of the foundation steel frame, the foundation steel frame connecting hardware for connecting the foundation steel frames 1 to each other is used for the corner portion of the building or By arranging them on the pillar street, the anchor bolts can be easily and surely positioned accurately on the corners of the building and on the pillar street, and moreover, the anchor bolts are surrounded by the cylinder body with the upper opening. So
It is possible to prevent concrete from adhering to the anchor bolts when the concrete is poured by the tubular body, and it is possible to prevent the hose for concrete placing from colliding with the anchor bolts when the concrete is cast by the tubular body.
Further, since the anchor bolt is projected from the basic steel-framed connecting hardware that connects the basic steel frames that are rigid bodies, the strength of the anchor bolt is strengthened.

[Brief description of drawings]

FIG. 1 is a perspective view of a reinforcing bar / steel core material unit for foundation of the present invention.

FIG. 2 is a front sectional view of the above.

FIG. 3 (a) is a front cross-sectional view showing a state in which anchor bolts are attached to the reinforcing bar / steel frame core material unit for foundation of the above,
(B) is a perspective view of a clip.

FIG. 4 is a front view showing a state in which the above anchor bolt is built in a reference plate.

FIG. 5 is a perspective view showing a state in which the above column base box is attached.

FIG. 6 is a front sectional view showing a state in which the above column base box is attached.

FIG. 7 is a perspective view of a column base box used in the above.

FIG. 8 is a perspective view showing a state in which the above-described basic reinforcing bar / steel frame core material units are connected to each other.

[Explanation of symbols]

1 Steel frame for foundation 2 main lines 3 connecting materials 4 streaks 5 support legs 6 anchor bolts 7 cylinder 8 Steel frame connecting hardware 9 tethers 10 Foundation rebar / steel core unit

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Satoshi Onimaru             2-35 Nishimihara, Yodogawa-ku, Osaka             Shin-Osaka 1405 Urban Design Institute F-term (reference) 2D046 AA01 BA41                 2E164 AA02 BA01

Claims (6)

[Claims] 1. A long base steel frame made of steel frame, a main bar made of reinforcing steel arranged in parallel to the long base steel frame, and a connecting member for integrally connecting the basic steel frame and the main bar. Reinforcing bar / steel core unit unit for foundation. 2. The rebar for a foundation according to claim 1, wherein the foundation steel is provided with support legs projecting downward.
Steel core material unit. 3. An anchor bolt is projected upward from the upper surface of the foundation steel frame, and a cylindrical body having an upper opening is provided on the upper surface of the foundation steel frame so as to surround the anchor bolt so as to project upward. Claim 1 or claim 2 characterized in that
Reinforcing bar / steel core material unit for the foundation described. 4. The rebar / steel core unit unit for foundation according to claim 3, wherein the lower end portion of the anchor bolt constitutes a support leg projecting downward from the steel frame for foundation. 5. A connecting structure for the reinforcing bar / steel core material unit for foundation and the reinforcing bar / steel core material unit for foundation according to any one of claims 1 to 4, wherein the adjacent reinforcing bars / steel frames for foundation are adjacent to each other. The foundation steel frames of the core unit are integrally connected to each other by the foundation steel frame connecting hardware and the adjacent foundation reinforcing bars are
A connecting structure for a reinforcing bar / steel core material unit for a foundation, characterized in that main bars of the steel core material unit are connected by a connecting bar. 6. An anchor bolt is projected upward from the upper surface of the foundation steel frame connecting metal article, and a cylindrical body is opened upward on the upper surface of the basic steel frame so as to surround the anchor bolt. The connecting structure for a reinforcing bar / steel core material unit for a foundation according to claim 5, wherein