JP2009030387A - Reinforcement unit, and reinforcement assembling method for construction of foundation - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent bending of a reinforcement unit from being concentrated on the same position. <P>SOLUTION: The bent and extended portions of the long ends 11a, 22b of the main reinforcements 11, 22 of one reinforcement unit 10 and the other reinforcement unit 20, are overlapped on and connected to the linearly extended portions of the shorter ends 12a, 21a of the main reinforcements 12, 21. This construction wherein the bending of the end portions of the main reinforcements is not concentrated on the same position, when used as a reinforced concrete construction, can prevent cracking in the concrete, even if concentrated load is applied or uniformly-distributed load is imposed thereupon. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a reinforcing bar unit and a foundation building rebar assembling method, and more particularly to a reinforcing bar unit and a foundation building rebar assembling method that can be easily assembled at a construction site.

  In the foundation of a small-scale building such as a detached house, as shown in FIG. 11, the cross-sectional shape of a general beam 110 has a rectangular cross section, and an abdominal muscle 102 is interposed between upper and lower main bars 100, 101. Arranged in the horizontal direction, the upper and lower main bars 100 and 101 and the ribbed muscle 103 are arranged in the vertical direction across the abdominal muscles 102 and connected to each other. In the foundation of such a small-scale building, as shown in FIG. 12, a tensile stress is generated on the lower side, and a compressive stress is generated on the upper side. The load state of the beam 110 is considered to be a concentrated load as shown in FIG. 13 or an evenly distributed load as shown in FIG.

  When these loads act on the beam 110 of the foundation of the small-scale building, the beam 110 is deformed to be convex in the load direction. For example, when a concentrated load as shown in FIG. 13 is applied, the beam 110 is deformed in a convex manner in the load direction as shown in FIG. 15, and when a uniformly distributed load as shown in FIG. Deforms convexly in the load direction as shown in FIG.

  The largest position of the deformation amount is the center of the beam 110, and the smallest position is the end of the beam 110. In other words, the bending moment is maximized at the center of the beam 110 and the bending moment is minimized at the end of the beam 110. On the other hand, the shearing force is zero at the center of the beam 110. In an actual structure, the maximum is 1/4 L (span). When a load acts on the beam member, the beam 110 bends in the load direction. At the same time, the beam 110 is also affected by the shearing force.

  When this is applied to an actual horizontal structure, the foundation base is bent and sheared from the bottom by the ground stress, and the foundation beam is also bent and sheared from the bottom by the ground stress. To do. The beam 110 is made of reinforced concrete so that it can resist such stress.

  Of these, the reinforcing bars resist the tensile force generated in the cross section of the beam 110, and the concrete is considered to be cooperating and sharing the generated stress in a unified manner against the compressive force. Furthermore, as the deformation progresses, the adhesive strength of concrete eventually becomes maximum, and cracks are generated here. It is the stirrup muscle 103 that can pile up against the crack, and therefore, a tensile stress acts on the staggered muscle 103.

  For example, a reinforcing bar unit is used for the foundation of a small-scale building, and the reinforcing bar unit is mainly a factory production type. This reinforcing bar unit is composed of an upper main bar, a lower main bar, an abdominal muscle, a ribbed muscle, and the like, and is arranged exclusively on the underground beam. In this reinforcing bar unit, the upper main bar, the lower main bar, and the abdominal muscle are arranged in the horizontal direction, and the ribs are arranged in the vertical direction, and each is fixed by spot welding or the like to form one unit.

  The reinforcing bar units are connected to each other at a construction site, and several methods are employed for connecting the reinforcing bar units. In the longitudinal connection, the reinforcing bar unit and the reinforcing bar unit are arranged so as to face each other and assembled with a supplementary bar. Further, the connection of the projecting corners is performed by arranging the reinforcing bar unit and the reinforcing bar unit in an L shape, and fixing them with an accessory bar processed into an L shape.

As described above, assembling the foundation building reinforcing bars requires supplementary bars for connecting the reinforcing bar units, and accordingly, the number of parts is increased, and the number of parts is increased and the amount of reinforcing bars is increased. For this reason, in Patent Documents 1 and 2, the height of the reinforcing bar units is increased without using a supplementary reinforcing bar by bending the ends of the main reinforcing bars and the abdominal muscles of the reinforcing bar unit and connecting them to the reinforcing bar unit that is not bent. They can be bundled together, and a concrete cover can be generated without any deviation in height between the reinforcing bar units.
JP 7-109788 A JP-A-2005-194878

  As described above, in the reinforcing bar units shown in Patent Documents 1 and 2, crank-shaped bent portions are provided at the same location at the ends of the main and abdominal muscles. By the way, as a property of the reinforcing bar, the composition is hardened by heat ingress and it becomes impossible to secure a predetermined elongation rate. On the other hand, the composition is disturbed by bending, and the strength tends to decrease. For this reason, when a concentrated load as shown in FIG. 12 is applied, or an evenly distributed load as shown in FIG. 13 is applied, there is a risk that the yield strength is reduced at the crank-shaped bent portion and cracks occur in the concrete.

  The present invention has been made in consideration of the above points, and an object of the present invention is to provide a reinforcing bar unit and a foundation building reinforcing bar assembling method that prevent bending of the reinforcing bar unit from being concentrated at the same location.

In order to solve the above problems and achieve the object, the present invention is configured as follows.

The invention according to claim 1 is arranged across a pair of main muscles arranged on both sides, at least one abdominal muscle arranged between the pair of main muscles, and the pair of main muscles and the abdominal muscles. It is a reinforcing bar unit that consists of loose ribs tied together.
The rebar unit is
The length of the end of the one main muscle is different from the length of the end of the other main muscle,
Bending the long end of the main muscle away from the main muscle axis and extending it in the connecting direction,
In the reinforcing bar unit, a short end portion of the main reinforcing bar is extended in a straight line extending in the connecting direction.

In the invention according to claim 2, the abdominal muscles are two,
The first abdominal muscle is extended in a straight line extending in the connecting direction having substantially the same length as the short end of the main muscle,
The second abdominal muscle is bent to extend away from the abdominal muscle axis at approximately the same length as the long end of the main muscle and extended in the connecting direction;
The first abdominal muscle is disposed on the main muscle side of the long end,
2. The reinforcing bar unit according to claim 1, wherein the second abdominal muscle is disposed on the main muscle side of the short end portion.

In the invention according to claim 3, the abdominal muscle is one,
2. The reinforcing bar unit according to claim 1, wherein the abdominal muscle is extended in a straight line extending in the connecting direction with substantially the same length as a short end of the main muscle.

In the invention according to claim 4, the number of the abdominal muscles is one,
2. The reinforcing bar unit according to claim 1, wherein the abdominal muscles are bent to extend away from the abdominal muscle axis at substantially the same length as the long end portion of the main muscles and extend in the connecting direction.

The invention according to claim 5 is arranged across a pair of main muscles arranged on both sides, at least one abdominal muscle arranged between the pair of main muscles, and the pair of main muscles and the abdominal muscles. A rebar unit consisting of abdominal muscles
The rebar unit is
The length of the end portion of the one main muscle and the length of the end portion of the other main muscle are extended in the connecting direction with the same length,
The end of the one main muscle is bent so as to deviate from the main muscle axis and extended in the connecting direction,
The reinforcing bar unit is characterized in that an end of the other main reinforcing bar is extended linearly extending in the connecting direction.

In the invention according to claim 6, the abdominal muscle is one,
6. The reinforcing bar unit according to claim 5, wherein the abdominal muscle is bent so as to be shorter than the length of the main muscle and away from the abdominal muscle axis and extended in the connecting direction.

The invention described in claim 7
The abdominal muscle is one,
6. The reinforcing bar unit according to claim 5, wherein the abdominal muscles are extended in a straight line extending in the connecting direction with substantially the same length as the main muscles.

The invention according to claim 8 is a connection between the reinforcing bar units according to claim 1,
A bent and extended portion of the long end of the main bar of one of the rebar units;
Overlap the portion that extends in a straight line at the short end of the main reinforcing bar of the other reinforcing bar unit,
A linearly extending portion of the short end of the main bar of one of the rebar units;
It is a foundation building reinforcing bar assembling method characterized by overlapping and connecting a bent and extending portion of a long end portion of the main reinforcing bar of the other reinforcing bar unit.

Invention of Claim 9 is connection of the abdominal muscles of Claim 2,
The first abdominal muscle of one reinforcing bar unit is approximately the same length as the short end of the main muscle, and the second abdominal muscle is approximately the same length as the long end of the main muscle,
The first abdominal muscle of the other reinforcing bar unit is approximately the same length as the long end of the main muscle, and the second abdominal muscle is approximately the same length as the short end of the main muscle,
A portion extending linearly at the short end of the first abdominal muscle of one of the reinforcing bar units and a portion extending by bending the long end of the first abdominal muscle of the other reinforcing bar unit;
Bending and extending the long end of the second abdominal muscle of one of the reinforcing bar units and the linearly extending portion of the short end of the second abdominal muscle of the other reinforcing bar unit The foundation building reinforcing bar assembling method according to claim 8, wherein the foundation building reinforcing bar is assembled.

Invention of Claim 10 is a connection of the abdominal muscle of Claim 3, and the abdominal muscle of Claim 4.
A linearly extending portion of the end of the abdominal muscle according to claim 3;
The foundation building reinforcing bar assembling method according to claim 8, wherein the bent and extended portion of the end of the abdominal muscle according to claim 4 is overlapped and connected.

Invention of Claim 11 is a connection of the reinforcing bar units of Claim 5,
A portion extending linearly at the end of the main bar of one of the reinforcing bar units, and a portion extending and bending at the end of the main bar of the other reinforcing bar unit,
A foundation-constructed reinforcing bar assembling method characterized in that a bent and extended portion of an end of a main bar of one of the reinforcing bar units and a linearly extending portion of the main bar of the other reinforcing bar unit are overlapped and connected. is there.

The invention described in claim 12 is a connection between the abdominal muscle according to claim 6 and the abdominal muscle according to claim 7.
A portion of the abdominal muscle that is bent and extended according to claim 6;
The foundation building reinforcing bar assembling method according to claim 11, wherein the abdominal muscle linearly extending portion according to claim 7 is overlapped and connected.

According to a thirteenth aspect of the present invention, a pair of main muscles disposed on both sides, at least one or more abdominal muscles disposed between the pair of main muscles, and the pair of main muscles and the abdominal muscles are disposed. It is a reinforcing bar unit that consists of loose ribs tied together.
The rebar unit is
The length of the end of the one main muscle is different from the length of the end of the other main muscle,
Bend the long end of the main muscle away from the main muscle axis, further bend and extend in the connecting direction,
In the reinforcing bar unit, a short end portion of the main reinforcing bar is extended in a straight line extending in the connecting direction.

The invention according to claim 14 is a connection between the reinforcing bar units according to claim 13,
A portion that bends and extends in the connecting direction of the long end of the main reinforcing bar of one of the rebar units;
Overlap the portion that extends in a straight line at the short end of the main reinforcing bar of the other reinforcing bar unit,
A linearly extending portion of the short end of the main bar of one of the rebar units;
It is a foundation construction reinforcing bar assembling method characterized by overlapping and connecting with the part which bends and extends in the connecting direction of the long end part of the main reinforcing bar of the other reinforcing bar unit.

With the above configuration, the present invention has the following effects.
In the first aspect of the invention, the reinforcing bar unit is formed such that the length of the end of one main bar is different from the length of the end of the other main bar, and the long end of the main bar is bent so as to deviate from the main bar axis. In the invention according to claim 8, the long end of the main bar of one reinforcing bar unit and the other reinforcing bar unit is extended in the connecting direction, and the short end of the main bar is extended in a straight line extending in the connecting direction. When using as a reinforced concrete structure, the bending part of the main bar is not concentrated in the same place by connecting the part that bends and extends and the part that extends linearly at the short end of the main bar. Even if a concentrated load is applied or an evenly distributed load is applied, it is possible to prevent cracks from occurring in the concrete.

  In the invention according to claim 2, the first abdominal muscle is extended in a straight line extending in the connecting direction having substantially the same length as the short end of the main muscle, and the second abdominal muscle is substantially the same as the long end of the main muscle. The first abdominal muscle is arranged on the main muscle side of the long end, and the second abdominal muscle is arranged on the main muscle side of the short end. In the invention according to claim 8, the portion of one reinforcing bar unit extending in a straight line at the short end of the first abdominal muscle and the bending of the long end of the first abdominal muscle of the other reinforcing bar unit. A portion extending by bending the long end of the second abdominal muscle of one reinforcing bar unit, and a portion extending linearly at the short end of the second abdominal muscle of the other reinforcing bar unit, When used as a reinforced concrete structure, the ends of the main and abdominal muscles are bent. Order not to concentrate on the same place, it is possible to prevent the concentrated load consuming, or even have a uniformly distributed load there can take cracks in the concrete occurs.

  In the invention described in claim 3, the abdominal muscles are linearly extended in the connecting direction and have substantially the same length as the short ends of the main muscles. In the invention described in claim 4, the abdominal muscles are the main muscles. In the invention according to claim 10, the abdominal muscle according to claim 3, and the abdominal muscle according to claim 4 are extended in the connecting direction. When using as a reinforced concrete structure by connecting the abdominal muscles described in 1., the bending work of the ends of the main and abdominal muscles does not concentrate at the same location, so even if a concentrated load or evenly distributed load is applied, the concrete It is possible to prevent cracks from occurring.

In the invention according to claim 5, the reinforcing bar unit has the same length of the end of one main bar and the length of the other main bar extending in the connecting direction, and the end of one main bar is extended. Bending away from the main bar axis, extending in the connecting direction, and extending the end of the other main bar in a straight line extending in the connecting direction. A portion extending linearly at the end of the main reinforcing bar, a portion extending by extending the end of the main reinforcing bar of the other reinforcing bar unit, a portion extending by bending the end of the main reinforcing bar of one reinforcing bar unit, When using as a reinforced concrete structure by overlapping and connecting the linearly extending portions of the main reinforcing bar of the other reinforcing bar unit, the bending of the end of the main reinforcing bar does not concentrate at the same location, so a concentrated load is applied, etc. Distributed load may be applied It is possible to prevent the cracking occurs in the concrete.
In the invention described in claim 6, the abdominal muscle is bent so as to be shorter than the length of the main muscle and deviating from the abdominal muscle axis and extended in the connecting direction. In the invention described in claim 7, the abdominal muscle is substantially the same as the length of the main muscle. The length of the abdominal muscle is extended in a straight line extending in the connecting direction. In the invention according to claim 12, the portion of the abdominal muscle bent and extended according to claim 6 and the abdominal muscle according to claim 7 are provided. When used as a reinforced concrete structure by overlapping and connecting parts that extend in a straight line, the bending of the end of the abdominal muscles does not concentrate at the same location, so concentrated loads or evenly distributed loads may be applied. However, it is possible to prevent cracks from occurring in the concrete.

  In the invention according to claim 13, the reinforcing bar unit has a length in which the length of the end of one main bar and the length of the end of the other main bar are different, so that the long end of the main bar deviates from the main bar axis. Are bent in the connecting direction and extended in the connecting direction, and the short ends of the main bars are extended in a straight line extending in the connecting direction. In the invention according to claim 14, the main bars of one reinforcing bar unit Extend the part that bends and extends in the connecting direction of the long end part and the part that extends linearly at the short end part of the main reinforcing bar of the other reinforcing bar unit to the straight line of the short end part of the main reinforcing bar of one reinforcing bar unit When using as a reinforced concrete structure by overlapping and connecting the part to be bent and the part that bends and extends in the connecting direction of the long end of the main reinforcing bar of the other reinforcing bar unit, bending of the end of the main reinforcing bar at the corner Are not concentrated in the same place, Takes Medium Load, or that the uniformly distributed load such cracks in the concrete even can be prevented from occurring.

  Hereinafter, embodiments of the reinforcing bar unit and the foundation building reinforcing bar assembling method of the present invention will be described. The embodiment of the present invention shows the most preferable mode of the present invention, and the present invention is not limited to this.

FIG. 1 is a plan view of a housing foundation. The housing foundation 1 is constructed by placing concrete at the construction site and placing concrete. This residential foundation has a straight part 2, a corner 3 and so on. The present invention is a reinforcing bar unit and a foundation building reinforcing bar assembling method that are applied to a straight part 2 and a protruding corner part 3 of a housing foundation 1. The first to third embodiments are applied to the direct portion 2, and the fourth embodiment is applied to the protruding corner portion 3.
[First Embodiment]
The reinforcing bar units 10 and 20 of this embodiment are shown in FIG. The reinforcing bar unit 10 includes a pair of main muscles 11, 12, two first and second abdominal muscles 13, 14 disposed between the pair of main muscles 11, 12, and a pair of main muscles 11, 12, 2. It comprises a plurality of stirrups 15 arranged in a direction orthogonal to the first and second abdominal muscles 13 and 14 of the book and bound together by welding or a binding member. The pair of main muscles 11 and 12, the first and second abdominal muscles 13 and 14, and the stirrup muscle 15 use deformed reinforcing bars, but are not limited thereto.

The reinforcing bar unit 10 has a length in which the length of the end 11 a of one main bar 11 is different from the length of the end 12 a of the other main bar 12, and the length of the end 11 a of the main bar 11 is the end of the main bar 12. It is longer than the length of the part 12a.
The long end portion 11a of the main muscle 11 is bent so as to deviate from the main muscle axis and is extended in the connecting direction. In FIG. 2, the bent portion 11b is bent obliquely downward from the lateral direction and further formed into a bent crank in the lateral direction. However, the bent portion 11b may be bent at a substantially right angle or bent. The part 11b may be bent not only in the downward direction but also in the upward direction.

The short end 12a of the main muscle 12 is extended in a straight line extending in the connecting direction. The tip of the end 12 a is a position that does not extend to the bent portion 11 b of the long end 11 a of the main muscle 11.
The end 13a of the first abdominal muscle 13 is extended in a straight line extending in the connecting direction, which is substantially the same length as the short end 12a of the main muscle 12, and this first abdominal muscle 13 is the main muscle 11 side of the long end 11a. Is arranged.

  The end portion 14a of the second abdominal muscle 14 is bent to extend away from the abdominal muscle axis with the same length as the long end portion 11a of the main muscle 11, and is extended in the connecting direction. In FIG. 2, the bent portion 14b is bent obliquely downward from the lateral direction, and further formed with a bending crank in the lateral direction. However, the bent portion 14b may be bent at a substantially right angle or bent. The part 14b may be bent not only in the downward direction but also in the upward direction. The second abdominal muscle 14 is disposed on the main muscle 12 side of the short end portion 12 a, and the bent portion 14 b of the second abdominal muscle 14 is a position facing the bent portion 11 b of the main muscle 11.

  The reinforcing bar unit 20 is configured symmetrically with the reinforcing bar unit 10, and the length of the end portion 21 a of the main reinforcing bar 21 is different from the length of the end portion 22 a of the main reinforcing bar 22. From the length of the end portion 21 a of the main reinforcing bar 21, The length of the end 22a of the main bar 22 is increased. The short end 21a of the main bar 21 is extended in a straight line extending in the connecting direction. The long end portion 22a of the main muscle 22 is bent so as to deviate from the main muscle axis and is extended in the connecting direction, and a bent portion 22b is formed. The bent portion 22b is located at a position extending from the tip of the short end portion 21a of the main muscle 21, and is bent obliquely upward from the lateral direction and further forms a bending crank in the lateral direction in FIG. 2, but is not limited thereto. The bent portion 22b may be bent substantially at a right angle, and the bent portion 22b may be bent not only in the upward direction but also in the downward direction.

  The first abdominal muscle 23 and the second abdominal muscle 24 are also configured symmetrically with the first abdominal muscle 13 and the second abdominal muscle 14. The length of the end 23a of the first abdominal muscle 23 is different from the length of the end 24a of the second abdominal muscle 24, and the length of the end 23a of the first abdominal muscle 23 is the second abdominal muscle. It is longer than the length of the end 24a of 24. The long end portion 23a of the first abdominal muscle 13 is bent so as to deviate from the abdominal muscle axis and is extended in the connecting direction, and a bent portion 23b is formed.

  The bent portion 23b is located at a position extending from the tip of the short end portion 21a of the main muscle 21, and is bent obliquely downward from the lateral direction and further forms a bending crank in the lateral direction in FIG. 2, but is not limited thereto. The bent portion 23b may be bent substantially at a right angle, and the bent portion 23b may be bent not only downward but also upward. The short end 24 a of the second abdominal muscle 24 is extended in a straight line extending in the connecting direction, and the tip of the short end 24 a is at a position facing the tip of the short end 21 a of the main muscle 21.

  The reinforcing bar unit 10 may be formed by bending the bent portions 11b and 14b to the main muscle 11 and the second abdominal muscle 14 in advance and connecting them with the stirrup 15 or connecting them with the stirrup 15. After the unit is formed, the bending portions 11b and 14b may be bent on the main muscle 11 and the second abdominal muscle 14. Similarly, the reinforcing bar unit 20 may be formed by bending the bent portions 22b and 23b to the main muscle 22 and the first abdominal muscle 23 in advance and connecting them with the stirrup 25, or connecting them with the stirrup 25. After the unit is formed, the bending portions 22b and 23b may be bent on the main muscle 22 and the first abdominal muscle 23. Further, the bending direction of the bent portions 11b and 14b is not particularly limited as described above, but the unit inner direction is preferable because the concrete thickness is the same.

  Next, the assembly of the reinforcing bar unit 10 and the reinforcing bar unit 20 will be described with reference to FIGS. FIG. 3 is a front view showing the foundation building reinforcing bar assembly, and FIG. 4 is a cross-sectional view showing the foundation building reinforcing bar assembly.

In this embodiment, as shown in FIG. 3, the long end portion 11 a of the main bar 11 of the reinforcing bar unit 10 is bent and extended, and the short end portion 21 a of the main bar 21 of the reinforcing bar unit 20 is extended linearly. The portions are overlapped so that the bent portion 11b is on the inner side of the unit, and connected by welding or a binding member. Further, the bent portion 22b is the inner side of the portion extending linearly of the short end portion 12a of the main reinforcing bar 12 of the reinforcing bar unit 10 and the portion of the long end portion 22a of the main reinforcing bar 22 of the reinforcing bar unit 20 bent and extended. In this way, they are overlapped and connected by welding or a binding member.
A portion extending linearly at the short end 13a of the first abdominal muscle 13 of the reinforcing bar unit 10 and a portion extending by bending the long end 23a of the first abdominal muscle 23 of the reinforcing bar unit 20 are bent portions 23b. Are overlapped with each other on the lower side and connected by welding or a binding member. In addition, the bent end portion 14a of the second abdominal muscle 14 of the reinforcing bar unit 10 is bent and extended, and the shorter end portion 24a of the second abdominal muscle 24 of the reinforcing bar unit 20 is extended linearly. They are overlapped so that the portion 14b is on the lower side and connected by welding or a binding member.

With this configuration, as shown in FIGS. 3 and 4, when used as a reinforced concrete structure, the positions of the bent portions 11b and 22b of the end portions 11a and 22a of the main bars 11 and 22 are L1 and L2. The bending process is not concentrated at the same location with a predetermined distance D1. Further, the positions of the bent portions 14b and 23b of the end portions 14a and 23a of the abdominal muscles 14 and 23 are similarly shifted by a predetermined distance D1, and the bending process is not concentrated on the same location. In this way, when used as a reinforced concrete structure, the bending work of the foundation construction rebar does not concentrate at the same location, so it can be prevented that cracks occur in the concrete even if a concentrated load or evenly distributed load is applied. .
[Second Embodiment]
The reinforcing bar units 10 and 20 of this embodiment are shown in FIG. The reinforcing bar unit 10 includes a pair of main muscles 11 and 12, one abdominal muscle 16 disposed between the pair of main muscles 11 and 12, and the pair of main muscles 11 and 12 and one abdominal muscle 16. It consists of a plurality of stirrups 15 arranged and bound.

  In this reinforcing bar unit 10, one abdominal muscle 16 is disposed, and the configuration of the other pair of main muscles 11 and 12 and the stirrup muscle 15 is the same as that in the first embodiment, and the same reference numerals are used for the description. Omitted. The end 16a of one abdominal muscle 16 is extended in a straight line extending in the connecting direction with substantially the same length as the short end 12a of the main muscle 12.

  Further, in the reinforcing bar unit 20, one abdominal muscle 26 is arranged, and the configurations of the other pair of main muscles 21, 22 and the stirrup muscle 25 are the same as those in the first embodiment, and are described with the same reference numerals. Is omitted. The end portion 26a of one abdominal muscle 26 is bent so as to be out of the abdominal muscle axis with the same length as the long end portion 22a of the main muscle 22, and is extended in the connecting direction to form a bent portion 26b. The bent portion 26b is located at a position extending from the tip of the short end portion 21a of the main muscle 21, and is bent obliquely downward from the lateral direction and further forms a bending crank in the lateral direction in FIG. 5, but is not limited thereto. The bent portion 26b may be bent substantially at a right angle, and the bent portion 26b may be bent not only in the downward direction but also in the upward direction.

Next, the assembly of the reinforcing bar unit 10 and the reinforcing bar unit 20 will be described with reference to FIG. FIG. 6 is a front view showing the foundation building rebar assembly.
In this embodiment, the connection between the main bars 11 and 12 of the reinforcing bar unit 10 and the main bars 21 and 22 of the reinforcing bar unit 20 is the same as that of the first embodiment. The portion extending linearly at the end 16a of the abdominal muscle 16 of the reinforcing bar unit 10 of this embodiment and the portion extending from the end 26a of the abdominal muscle 26 of the reinforcing bar unit 20 are overlapped and connected.

  In this embodiment, the abdominal muscles 16 of the reinforcing bar unit 10 are extended in a straight line extending in the connecting direction with substantially the same length as the short end 12a of the main muscle 12, and the abdominal muscles 26 of the reinforcing bar unit 20 are the main muscles. The abdominal muscles 16 of the reinforcing bar unit 10 and the abdominal muscles 26 of the reinforcing bar unit 20 are connected to each other by being bent so as to be off the abdominal muscle axis and extending in the connecting direction.

  With this configuration, when used as a reinforced concrete structure, the positions of the bent portions 11b and 22b of the end portions 11a and 22a of the main bars 11 and 22 are L1 and L2, and the bending process is shifted to the same place by a predetermined distance D1. Do not concentrate. Similarly, the position of the bent portion 26b of the end portion 26a of the abdominal muscle 26 is also deviated from the position of the bent portion 11b of the end portion 11a of the main muscle 11 by a predetermined distance D1, and the bending process is not concentrated at the same location. In this way, when used as a reinforced concrete structure, the bending work of the foundation construction rebar does not concentrate at the same location, so it can be prevented that cracks occur in the concrete even if a concentrated load or evenly distributed load is applied. .

[Third Embodiment]
The reinforcing bar units 10 and 20 of this embodiment are shown in FIG. The reinforcing bar unit 10 includes a pair of main muscles 11, 12, one abdominal muscle 17 disposed between the pair of main muscles 11, 12, and a pair of main muscles 11, 12 and one abdominal muscle 17. It consists of a plurality of stirrups 15 arranged and bound.

  In this reinforcing bar unit 10, the length of the end 11 a of the main bar 11 and the length of the end 12 a of the main bar 12 are the same length and are extended in the connecting direction. The end 11a of the main bar 11 is extended in a straight line extending in the connecting direction. Further, the end portion 12a of the main muscle 12 is bent so as to deviate from the main muscle axis and is extended in the connecting direction to form a bent portion 12b.

  One abdominal muscle 17 is provided, and an end portion 17a of the abdominal muscle 17 is bent so as to be shorter than the length of the main muscles 11 and 12 and away from the abdominal muscle axis, and is extended in the connecting direction to form a bent portion 17b.

  Further, the reinforcing bar unit 20 spans a pair of main muscles 21 and 22, one abdominal muscle 27 disposed between the pair of main muscles 21 and 22, and a pair of main muscles 21 and 22 and one abdominal muscle 27. A plurality of streaks 25 arranged and bound together.

  In this reinforcing bar unit 20, the length of the end portion 21a of the main bar 21 and the length of the end portion 22a of the main bar 22 are the same length and are extended in the connecting direction. The end portion 21a of the main muscle 21 is bent so as to deviate from the main muscle axis and is extended in the connecting direction to form a bent portion 21b. The end 22a of the main bar 22 is extended in a straight line extending in the connecting direction. There is one abdominal muscle 27, and the end 27a of the abdominal muscle 27 is extended in a straight line extending in the connecting direction.

Next, the assembly of the reinforcing bar unit 10 and the reinforcing bar unit 20 will be described with reference to FIG. FIG. 8 is a front view showing the foundation building rebar assembly.
In this embodiment, the connection between the main bars 11 and 12 of the reinforcing bar unit 10 and the main bars 21 and 22 of the reinforcing bar unit 20 is a linearly extending portion of the end portion 11a of the main bar 11 of the reinforcing bar unit 10, and the reinforcing bar unit. The bent and extended portions of the end portions 21a of the 20 main bars 21 are overlapped and connected. In addition, the bent and extended portion of the end portion 12a of the main reinforcing bar 12 of the reinforcing bar unit 10 and the linearly extended portion of the end portion 22a of the main reinforcing bar 22 of the reinforcing bar unit 20 are overlapped and connected.
Further, the bent and extended portion of the end portion 17a of the abdominal muscle 17 of the reinforcing bar unit 10 and the bent and extended portion of the end portion 27a of the abdominal muscle 27 of the reinforcing bar unit 20 are overlapped and connected.
With this configuration, when used as a reinforced concrete structure, the positions of the bent portions 12b and 21b of the end portions 12a and 21a of the main bars 12 and 21 are L3 and L4, which are shifted by a predetermined distance D2, and the bending process is the same. Since it does not concentrate on the location, it is possible to prevent cracking in the concrete even if a concentrated load or an evenly distributed load is applied.
Further, the bent portion 17b of the end portion 17a of the abdominal muscle 17 and the bent portion 21b of the end portion 21a of the main muscle 21 are shifted by a predetermined distance D2, and the bending process is not concentrated at the same location. Even if it is applied, it is possible to prevent cracks from occurring in the concrete.
[Fourth Embodiment]
The reinforcing bar units 10 and 20 of this embodiment are shown in FIG. The reinforcing bar unit 10 includes a pair of main muscles 11 and 12, one abdominal muscle 18 disposed between the pair of main muscles 11 and 12, and the pair of main muscles 11 and 12 and one abdominal muscle 18. It consists of a plurality of stirrups 15 arranged and bound.

  In the reinforcing bar unit 10, the length of the end 11 a of the main bar 11 is different from the length of the end 12 a of the main bar 12. The short end 11a of the main bar 11 is extended linearly extending in the connecting direction. The long end portion 12a of the main muscle 12 is bent so as to deviate from the main muscle axis, and further bent and extended in the connecting direction from the bent portion 12b to form a bent portion 12b and a bent portion 12c. The bent portion 12b is bent upward as described above, and the bent portion 12c is bent laterally.

The number of abdominal muscles 18 is one, and the end 18a of this abdominal muscle 18 is extended in a straight line extending in the connecting direction, like the short end 11a of the main muscle 11.
In addition, the reinforcing bar unit 20 spans a pair of main muscles 21, 22, one abdominal muscle 28 disposed between the pair of main muscles 21, 22, and a pair of main muscles 21, 22 and one abdominal muscle 28. A plurality of streaks 25 arranged and bound together.

  In the reinforcing bar unit 20, the length of the end portion 21 a of the main bar 21 is different from the length of the end portion 22 a of the main bar 22. The long end portion 21a of the main muscle 21 is bent so as to deviate from the main muscle axis, and further bent and extended in the connecting direction from the bent portion 21b to form a bent portion 21b and a bent portion 21c. The bent portion 21b is bent downward as described above, and the bent portion 21c is bent laterally.

The short end 22a of the main bar 22 is extended in a straight line extending in the connecting direction.
There is one abdominal muscle 28, and an end portion 28a of the abdominal muscle 28 is bent so as to deviate from the abdominal muscle axis, and further bent and extended in the connecting direction from the bent portion 28b, and the bent portion 28b and the bent portion 28c are formed. Forming. The bent portion 21b is bent downward as described above, and the bent portion 21c is bent laterally.

  Next, the assembly of the reinforcing bar unit 10 and the reinforcing bar unit 20 will be described with reference to FIG. FIG. 10 is a front view showing the foundation building rebar assembly.

  In this embodiment, the connection between the main bars 11 and 12 of the reinforcing bar unit 10 and the main bars 21 and 22 of the reinforcing bar unit 20 is a linearly extending portion of the end portion 11a of the main bar 11 of the reinforcing bar unit 10, and the reinforcing bar unit. The bent and extended portions of the end portions 21a of the 20 main bars 21 are overlapped and connected. In addition, the bent and extended portion of the end portion 12a of the main reinforcing bar 12 of the reinforcing bar unit 10 and the linearly extended portion of the end portion 22a of the main reinforcing bar 22 of the reinforcing bar unit 20 are overlapped and connected.

  Moreover, the part extended linearly of the edge part 17a of the abdominal muscle 18 of the reinforcing bar unit 10 and the part bent and extended of the edge part 28a of the abdominal muscle 28 of the reinforcing bar unit 20 are overlapped and connected. Further, in this embodiment, the number of abdominal muscles of the reinforcing bar units 10 and 20 is one, but it may be two.

  Thus, in this embodiment, when used as a reinforced concrete structure, the positions of the bent portions 12b and 21b of the end portions 12a and 21a of the main bars 12 and 21 are L10 and L11, the positions are shifted, and the abdominal muscle 28 The position of the bent portion 28b of the end portion 28a is L11, and the position of the bent portion 12b of the end portion 12a of the main muscle 12 is shifted from L10. Further, the position L12 of the bent portions 21c, 12c, and 28c is shifted from the positions L10 and L11 of the bent portions 12b and 21b and the position L11 of the bent portion 28b. In this way, since bending is not concentrated at the same location, cracks can be prevented from occurring in the concrete even when a concentrated load is applied or an evenly distributed load is applied.

  The present invention can be applied to a reinforcing bar unit and a foundation building reinforcing bar assembling method that can be easily assembled at a construction site, and bending work of the reinforcing bar unit can be prevented from being concentrated at the same location.

FIG. 1 is a plan view of a housing foundation. It is a figure which shows the reinforcing bar unit of 1st Embodiment. It is a front view which shows the foundation construction reinforcement assembly of 1st Embodiment. It is sectional drawing which shows the foundation construction reinforcing bar assembly of 1st Embodiment. It is a figure which shows the reinforcing bar unit of 2nd Embodiment. It is a front view which shows the foundation construction reinforcement assembly of 2nd Embodiment. It is a figure which shows the reinforcing bar unit of 3rd Embodiment. It is a front view which shows the foundation construction reinforcement assembly of 3rd Embodiment. It is a figure which shows the reinforcing bar unit of 4th Embodiment. It is a perspective view which shows the foundation construction reinforcement assembly of 4th Embodiment. It is a basic sectional view of a small-scale building. It is a figure explaining the stress of the foundation of a small-scale building. It is a figure explaining the concentrated load of the foundation of a small building. It is a figure explaining the equally distributed load of the foundation of a small-scale building. It is a figure explaining the deformation | transformation by the concentrated load of the foundation of a small building. It is a figure explaining the deformation | transformation by the equal distribution load of the foundation of a small-sized building.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Housing foundation 2 Straight part 3 Out corner 10 Reinforcing bar unit 11,12 Main bar 11a End part 11b of main bar 11 Bending part 12a End part 12b, 12c of main bar 12 Bending part
13 First abdominal muscle 13a End 14 of the first abdominal muscle 13 Second abdominal muscle 14a End 14b of the second abdominal muscle 14 Bending portion 15 Abdominal muscle 16 Abdominal muscle 16a End of the abdominal muscle 16 Abdominal muscle 18 Abdominal muscle 20 Reinforcement unit 21 , 22 main muscle 21a end portions 21b, 21c of main muscle 21 bent portion 22a end portion 22b of main muscle 22 bent portion
23 First abdominal muscle 23a End part 23b of the first abdominal muscle 23 Bent part 24 Second abdominal muscle 24a End part 25 of the second abdominal muscle 24 Abdominal muscle 26 Abdominal muscle 26a End part 26b of the abdominal muscle 26 Bent part 27 Abdominal muscle 27a Abdominal muscle 27 End 28 abdominal muscle 28a end of abdominal muscle 28

Claims (14)

Reinforcing bar comprising a pair of main muscles arranged on both sides, at least one or more abdominal muscles arranged between the pair of main muscles, and a rib muscle arranged and bound between the pair of main muscles and the abdominal muscles Unit,
The rebar unit is
The length of the end of the one main muscle is different from the length of the end of the other main muscle,
Bending the long end of the main muscle away from the main muscle axis and extending it in the connecting direction,
A reinforcing bar unit in which a short end portion of the main reinforcing bar is extended in a straight line extending in a connecting direction. The abs are two,
The first abdominal muscle is extended in a straight line extending in the connecting direction having substantially the same length as the short end of the main muscle,
The second abdominal muscle is bent to extend away from the abdominal muscle axis at approximately the same length as the long end of the main muscle and extended in the connecting direction;
The first abdominal muscle is disposed on the main muscle side of the long end,
2. The reinforcing bar unit according to claim 1, wherein the second abdominal muscle is arranged on a main muscle side of the short end portion. The abdominal muscle is one,
2. The reinforcing bar unit according to claim 1, wherein the abdominal muscles are extended in a straight line extending in the connecting direction with substantially the same length as a short end portion of the main muscles. The abdominal muscle is one,
The reinforcing bar unit according to claim 1, wherein the abdominal muscles are bent to extend away from the abdominal muscle axis and extend in the connecting direction at substantially the same length as the long end of the main muscle. Reinforcing bar comprising a pair of main muscles arranged on both sides, at least one or more abdominal muscles arranged between the pair of main muscles, and a rib muscle arranged and bound between the pair of main muscles and the abdominal muscles Unit,
The rebar unit is
The length of the end portion of the one main muscle and the length of the end portion of the other main muscle are extended in the connecting direction with the same length,
The end of the one main muscle is bent so as to deviate from the main muscle axis and extended in the connecting direction,
A reinforcing bar unit in which an end of the other main reinforcing bar is extended in a straight line extending in the connecting direction. The abdominal muscle is one,
6. The reinforcing bar unit according to claim 5, wherein the abdominal muscles are bent so as to be shorter than the length of the main muscles and deviate from the abdominal muscle axis and extend in the connecting direction. The abdominal muscle is one,
The reinforcing bar unit according to claim 5, wherein the abdominal muscles are extended in a straight line extending in the connecting direction with substantially the same length as the main muscles. It is the connection between the reinforcing bar units according to claim 1,
A bent and extended portion of the long end of the main bar of one of the rebar units;
Overlap the portion that extends in a straight line at the short end of the main reinforcing bar of the other reinforcing bar unit,
A linearly extending portion of the short end of the main bar of one of the rebar units;
A base construction reinforcing bar assembling method characterized by overlapping and connecting a bent and extending portion of a long end portion of the main reinforcing bar of the other reinforcing bar unit. The connection between abdominal muscles according to claim 2,
The first abdominal muscle of one reinforcing bar unit is approximately the same length as the short end of the main muscle, and the second abdominal muscle is approximately the same length as the long end of the main muscle,
The first abdominal muscle of the other reinforcing bar unit is approximately the same length as the long end of the main muscle, and the second abdominal muscle is approximately the same length as the short end of the main muscle,
A portion extending linearly at the short end of the first abdominal muscle of one of the reinforcing bar units and a portion extending by bending the long end of the first abdominal muscle of the other reinforcing bar unit;
Bending and extending the long end of the second abdominal muscle of one of the reinforcing bar units and the linearly extending portion of the short end of the second abdominal muscle of the other reinforcing bar unit The foundation building reinforcing bar assembling method according to claim 8, wherein the reinforcing bars are connected. It is a connection between the abdominal muscle of claim 3 and the abdominal muscle of claim 4.
A linearly extending portion of the end of the abdominal muscle according to claim 3;
The foundation building reinforcing bar assembling method according to claim 8, wherein the end part of the abdominal muscle according to claim 4 is overlapped and connected to the bent and extended part. It is the connection between the reinforcing bar units according to claim 5,
A portion extending linearly at the end of the main bar of one of the reinforcing bar units, and a portion extending and bending at the end of the main bar of the other reinforcing bar unit,
A base construction reinforcing bar assembling method characterized by overlapping and connecting a bent and extended portion of an end of a main reinforcing bar of one reinforcing bar unit and a linearly extending portion of the main reinforcing bar of the other reinforcing bar unit. It is a connection between the abdominal muscle of claim 6 and the abdominal muscle of claim 7.
A portion of the abdominal muscle that is bent and extended according to claim 6;
The method for assembling a foundation building reinforcing bar according to claim 11, wherein the linearly extending portion of the abdominal muscle according to claim 7 is overlapped and connected. Reinforcing bar comprising a pair of main muscles arranged on both sides, at least one or more abdominal muscles arranged between the pair of main muscles, and a rib muscle arranged and bound between the pair of main muscles and the abdominal muscles Unit,
The rebar unit is
The length of the end of the one main muscle is different from the length of the end of the other main muscle,
Bend the long end of the main muscle away from the main muscle axis, further bend and extend in the connecting direction,
A reinforcing bar unit in which a short end portion of the main reinforcing bar is extended in a straight line extending in a connecting direction. It is the connection between the reinforcing bar units according to claim 13,
A portion that bends and extends in the connecting direction of the long end of the main reinforcing bar of one of the rebar units;
Overlap the portion that extends in a straight line at the short end of the main reinforcing bar of the other reinforcing bar unit,
A linearly extending portion of the short end of the main bar of one of the rebar units;
A method for assembling a foundation building reinforcing bar comprising overlapping and connecting a portion extending and extending in a connecting direction of a long end portion of the main reinforcing bar of the other reinforcing bar unit.