JP2007247206A - Reinforcement unit for foundation, and reinforcement structure for foundation, using the reinforcement unit - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a reinforcement structure for a foundation, which can improve the rigidity and strength of the foundation without increasing construction costs, and to provide a reinforcement structure for the foundation, which uses the reinforcement unit. <P>SOLUTION: The reinforcement unit is obtained by connecting a plurality of horizontal main reinforcements 5, 5 to each other by vertical reinforcement members 1, 2, and forming rise reinforcement sections 3 and base reinforcement sections 4 by bending the vertical reinforcement members. The vertical reinforcement members include the first and second vertical reinforcement members which are each formed such that a single reinforcement member is bent so as to form a ridge and a valley at predetermined pitches to have predetermined amplitudes, respectively. Then the first and second vertical reinforcement members are laterally shifted from each other such that the ridge of one of the vertical reinforcement members is located on a lateral side of the valley of the other longitudinal reinforcement member. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a reinforcing bar unit for foundation to be reinforced for reinforcement of foundation concrete of a building and a reinforcing bar structure for a foundation using the reinforcing bar unit.

  Reinforcing bars that are embedded in the foundation concrete of a building are those that are formed in a reinforcing bar unit of a predetermined shape at the factory (see, for example, Patent Document 1 or Patent Document 2). It is composed of a horizontal base muscle, a vertical rising muscle, and a support muscle for standing the rising muscle on the base muscle, and the base muscle and the rising muscle are cut into a predetermined size. Are combined in a grid pattern.

Registered Utility Model No. 3007619 (Pages 1-5, Figures 1-3) Japanese Utility Model Publication No. 6-49530 (pages 1 and 2 and FIGS. 1 and 2)

  The riser is an important reinforcing material that is directly related to the rigidity strength of the foundation concrete, so increase the number of muscles by narrowing the arrangement interval of the riser or increasing the diameter of the riser. Although it is desirable to improve the rigidity strength of the foundation concrete, there are the following problems.

  In other words, as the number of rising bars increases and the diameter of the bars increases, the weight of the reinforcing bar units and the material costs increase, and the manufacturing of the reinforcing bar units takes time and effort. As a result, the product price also rises and the competitiveness in the market greatly decreases.

  According to the present invention, it is possible to provide a reinforcing bar unit for a foundation that can improve the rigidity and strength without increasing the manufacturing cost, and a reinforcing bar structure for a foundation using the reinforcing bar unit.

  The reinforcing bar unit according to the present invention is a reinforcing bar unit in which a plurality of horizontal main bars are connected by vertical bars, and a rising bar and a base bar are formed by bending the vertical bars, and the vertical bars The material is composed of a first longitudinal bar and a second longitudinal bar formed by bending and forming a single bar in a predetermined pitch so as to form a peak and a valley and to have a predetermined amplitude, The horizontal position of one vertical bar and the second vertical bar are shifted so that the valley of the other vertical bar is positioned at the horizontal position of the mountain in one vertical bar.

  The first and second vertical bars are bent on a straight line parallel to the main bars, the rising bars are formed by substantially upper half portions of the first and second vertical bars, and the remaining base bars It is assumed that the part is configured.

  The first and second vertical bars are arranged so that the base bar of the one vertical bar is positioned in front of the rising bar of the other vertical bar.

  In the longitudinal bar material, a portion parallel to one or more main bars is formed.

  The base muscle portion constitutes first and second horizontal portions.

  An inclined portion is formed between the first and second horizontal portions.

  Longitudinal streaks at least on the rising foundation of the fabric foundation or solid foundation are constructed by connecting a plurality of strips formed by bending a single streak at a predetermined pitch so as to form peaks and valleys and to have a predetermined amplitude. It is as.

  According to the reinforcing bar unit for the foundation of the present invention, the rising bars are embedded in a zigzag diagonal form continuously in the up and down direction at a predetermined pitch with respect to the extending direction of the foundation. In particular, the stress applied to the sway and torsion of the foundation in the extending direction is improved, and the rigidity strength of the foundation concrete can be improved by using this reinforcing bar unit.

Therefore, since the rigidity strength of the foundation concrete can be improved without increasing the number of rising bars installed and without increasing the diameter of the rising bars (see the rigidity strength comparison table), the market competitiveness is improved.
In addition, depending on the arrangement form of the first vertical bars and the second vertical bars, the rising muscles can be provided in a bracing state, and the rigidity strength can be further improved.

  Then, when the foundation is constructed integrally with the cloth foundation and the solid foundation, the second horizontal portion is obtained by using the base reinforcing portion of the reinforcing bar unit formed with the first and second horizontal portions. Since the slab muscle embedded in the solid foundation can be bound, stronger rigidity and strength can be obtained. Moreover, it can be set as an inner periphery by arrange | positioning this reinforcing bar unit back to back.

  Since the rising muscle is provided with a horizontal portion that is parallel to the main muscle, it is possible to facilitate attachment to the basic main muscle and binding to the slab muscle.

  In this reinforcing bar unit, the rising and base streaks are formed by bending the vertical bars. It can be used as an inner circumference muscle and can respond quickly to them.

  Furthermore, even if it is used in a place with a right angle corner of the foundation, an acute angle or obtuse angle corner, or a circular part with an arbitrary polarity, it can be handled by adjusting the protruding angle of the base reinforcement of the reinforcing bar unit arbitrarily it can.

  The rising bars of this reinforcing bar unit are embedded in a zigzag diagonal pattern continuously in the vertical direction in the fabric foundation. After the foundation is completed, a part of the foundation is cut to lay pipes and doorways. Also when forming, the cutting direction of the rising streaks is horizontal, so the workability is good, and in particular, the degree of freedom is also high when deciding the piping laying route.

Hereinafter, the reinforcing bar unit for the foundation of the present invention and the reinforcing bar structure for the foundation using the reinforcing bar unit will be described with reference to the accompanying drawings.
The reinforcing bar unit of the present invention shown in FIGS. 1 to 6 shows an embodiment of the reinforcing bar unit according to the present invention used as an outer peripheral reinforcing bar of a foundation formed integrally with a fabric foundation and a solid foundation. The rising muscle portion and the base muscle portion are formed by bending the muscle material.

  FIG. 1A shows a first vertical bar, and FIG. 1B shows a second vertical bar, where 1 is the first vertical bar and 2 is the second The vertical bars are formed by bending to form rising bars 3 and base bars 4, and the base bars 4 are formed with a first horizontal portion 4a, a second horizontal portion 4b, and an inclined portion 4c. Further, the second horizontal portion 4b can easily bind to the slab muscle (not shown).

  The first vertical bar material is bent in the first horizontal line formed continuously on both sides of the peak formed by the rising line 3 having the horizontal part 3a at the top. The portion 4a is directed forward with the boundary with the mountain portion (the rising muscle 3) as a fulcrum, and continues to the second horizontal portion 4b. In addition, an inclined portion 4c is formed between the first horizontal portion 4a and the second horizontal portion 4b. This base muscle 4 is a part which becomes a valley.

  FIG. 2 is an embodiment in which the first vertical bar 1 and the second vertical bar 2 are combined, and the base bar 4 of one vertical bar is formed by the rising bar 3 of the other vertical bar. The 1st vertical bar 1 and the 2nd vertical bar 2 are combined so that it may be located in front of the formed peak part. The combined reinforcing bar unit is arranged in the extending direction of the foundation, and the main reinforcing bar 5 is attached to the reinforcing bar unit as shown in FIG.

Further, by arbitrarily changing the bending position of the vertical bars, the height of the rising bars 3, the amount of protrusion and the width of the base bars 4 (first horizontal part 4a, second horizontal part 4b, inclined part 4c), And the amplitude of the peaks and valleys of the longitudinal bars can be freely changed to a desired dimension.
FIG. 4 shows the longitudinal bars bent to a predetermined amplitude on a straight line parallel to the main bars 5. From this state, the vertical bars are bent in the predetermined direction at the position of the folding position line 6 to obtain (a ) First vertical bar 1 and the second vertical bar 2 of FIG. 1B can be obtained.
In FIG. 4, the range of 3 shown on the right side is a rising line, the range of 4a is the first horizontal portion, the range of 4c is the inclined portion, and the range of 4b is the second horizontal portion.

FIG. 5 is a cross-sectional view showing the arrangement of the reinforcing bar unit in the foundation, and FIG. 5 (a) is used as the outer peripheral reinforcement of the foundation in which the cloth foundation 7 and the solid foundation 8 are integrated. It is. FIG.5 (b) is an example which applied this reinforcing bar unit used as an outer periphery reinforcement to the cloth foundation 7 provided in the solid foundation 8 as an inner periphery reinforcement.
In addition, although the positional relationship between the vertical bar 1 and the main bar 5 is configured such that the main bar is sandwiched between the vertical bars in FIGS. 5A and 5B, FIG. 5A and FIG. There is a case where it is configured not to be sandwiched as shown in 5 (b ′).
Moreover, FIG. 6 is an example which has arrange | positioned this reinforcing bar unit in a corner part.

  The reinforcing bar unit of the present invention shown in FIGS. 7 to 11 shows an embodiment of the reinforcing bar unit according to the present invention when used as an inner circumference of a foundation. Part.

  FIG. 7 (a) shows the first vertical bar, and FIG. 7 (b) shows the second vertical bar, where 1 is the first vertical bar and 2 is the second In the vertical bar material, the rising bar 3 and the base bar 4 are formed by bending. Reference numeral 3a denotes a horizontal portion that facilitates attachment of the main muscle 5 and binding with the slab muscle (not shown).

  The first longitudinal bar material is bent in such a manner that the base bars 4 continuously formed on both sides of the peak part formed by the rising bars 3 having the horizontal part 3a at the top are formed by the bending. It is directed forward with the boundary with the mountain (the rising muscle 3) as a fulcrum. This base muscle 4 is a part which becomes a valley.

  FIG. 8 shows an embodiment in which the first vertical bar 1 and the second vertical bar 2 are combined, and the base bar 4 of one vertical bar is formed by the rising bar 3 of the other vertical bar. The first vertical bar 1 and the second vertical bar 2 are combined so as to be located in front of the mountain. The combined reinforcing bar unit is arranged in the extending direction of the foundation, and the main reinforcing bar 5 is attached to the reinforcing bar unit as shown in FIG.

  In addition, by arbitrarily changing the bending position of the vertical bars, the height of the rising bars 3, the protruding amount and width of the base bars 4, and the amplitudes of the peaks and valleys of the vertical bars can be freely changed to desired dimensions. . FIG. 10 shows the longitudinal bars bent to a predetermined amplitude on a straight line parallel to the main bars 5. From this state, the vertical bars are bent in a predetermined direction at the position of the folding position line 6, thereby FIG. The first vertical bar 1 and the second vertical bar 2 shown in FIG. 7B can be obtained. In FIG. 10, the range of 3 shown on the right side is a rising streak, and the range of 4 is a base streak.

表１の結果からもわかるように、本発明の外周筋（鉄筋ユニット）は、縦歪および横歪においてその測定値が従来型の外周筋の歪より小さな数値となっており、したがって本発明の外周筋（鉄筋ユニット）は、数値上からもその剛性強度の向上が立証された。 FIG. 11 is a view showing a test method of a rigidity comparison test between a conventional outer periphery and the outer periphery (rebar unit) of the present invention, and FIG. 11 (a) shows the form of the outer periphery to be compared. In the middle, the left side shows a conventional outer peripheral line composed of horizontal main bars and vertical vertical bars. In the same figure, the vertical lines on the right side have peaks and valleys at a predetermined pitch and have a predetermined amplitude. The outer periphery of the present invention (reinforcing bar unit) of the present invention having a continuous wave curve shape formed by bending (vertical bars are continuous oblique bars) is shown.
FIG. 11B is a diagram showing a comparison method, and the left diagram shows a longitudinal strain test method in which a strain amount is measured with a weight of 50 kg with a weight. The right figure shows the method of the lateral strain test, and measures the amount of strain when it is pulled with each force of 10 kg, 15 kg, 20 kg, and 30 kg.
The wire diameter of the reinforcing bars used in the above test was 13 mm for the main bars and 10 mm for the longitudinal bars for both the present product and the conventional type.
Table 1 below shows the results of the rigidity comparison test.

As can be seen from the results in Table 1, the measured value of the outer peripheral reinforcement (rebar unit) of the present invention is smaller than that of the conventional outer peripheral reinforcement in the longitudinal strain and the lateral strain. The strength of the outer periphery reinforcement (rebar unit) was proved from numerical values.

The perspective view which shows the Example of the reinforcing bar unit which concerns on this invention. The perspective view which shows the state which combined the 1st vertical bar of FIG. 1, and the 2nd vertical bar. The perspective view which shows the state which attached the main reinforcement to the reinforcing bar unit of FIG. The perspective view which shows an example of the bending position of a vertical bar. Sectional drawing which shows arrangement | positioning in the foundation of a reinforcing bar unit. The top view which shows the reinforcing bar unit arrange | positioned at the corner part. The perspective view which shows the Example of the reinforcing bar unit which concerns on this invention. The perspective view which shows the state which combined the 1st vertical bar of FIG. 7, and the 2nd vertical bar. The perspective view which shows the state which attached the main reinforcement to the reinforcing bar unit of FIG. The perspective view which shows an example of the bending position of a vertical bar. The figure which shows the test method of the rigidity comparison test with the conventional outer periphery reinforcement and the outer periphery reinforcement (rebar unit) of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 1st vertical bar 2 2nd vertical bar 3 Standing bar 3a Horizontal part 4 Base bar 4a First horizontal part 4b Second horizontal part 4c Inclined part 5 Main bar 6 Bending position line 7 Fabric foundation 8 Solid foundation

Claims (7)

  A reinforcing bar unit in which a plurality of horizontal main bars are connected by vertical bars, and a rising bar and a base bar are formed by bending the vertical bars, and each of the vertical bars is a single bar. The material is composed of a first vertical bar and a second vertical bar formed by bending and forming a peak and a valley at a predetermined pitch to have a predetermined amplitude, and the first vertical bar and the second The reinforcing bar unit for the foundation which is provided by shifting the horizontal position of the vertical reinforcing bar so that the valley of the other vertical reinforcing bar is positioned at the horizontal position of the mountain in one vertical reinforcing bar.   The first and second vertical bars are bent on a straight line parallel to the main bars, the rising bars are formed by substantially upper half portions of the first and second vertical bars, and the remaining base bars The reinforcing bar unit for foundations according to claim 1, which is configured as a part.   The base for the foundation according to claim 2, wherein the first and second vertical bars are arranged so that the base bar of the one vertical bar is positioned in front of the rising bar of the other vertical bar. Rebar unit.   The reinforcing bar unit for a foundation according to claim 2, wherein a portion parallel to one or more main reinforcing bars is formed on the vertical reinforcing bar.   The reinforcing bar unit for a foundation according to claim 2, wherein the base reinforcing bar portion includes first and second horizontal portions.   The reinforcing bar unit for a foundation according to claim 5, wherein an inclined portion is formed between the first and second horizontal portions.   The vertical stripes of at least the rising streaks of the fabric foundation or solid foundation are formed by connecting a plurality of strips formed by bending and forming a single streak at a predetermined pitch so as to have a peak and a valley and to have a predetermined amplitude. Reinforcing bar structure for foundation.

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