JP2004076475A - Bar arrangement method for mat foundation and mesh reinforcement - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a bar arrangement method for a mat foundation and a mesh reinforcement capable of also ensuring a cover concrete without slipping in both vertical and horizontal directions in the case of bar arrangement and causing filling fault such as a honeycomb or the like. <P>SOLUTION: A plurality of kinds and sheets of approximately rectangular mesh reinforcements (11 and 15) are prepared, and either one of a vertical reinforcement or a horizontal reinforcement of at least one kind of mesh reinforcements between both of them is projected from the other one. After the mesh reinforcements (11) as the standard have been arranged to one corner in the mat foundation construction ground (1), the following mesh reinforcements (11 and 15) from the standard mesh reinforcements are successively brought into contact with the corresponding vertical reinforcements in the vertical direction so as to arrange projections to an overlap section to partially overlap. The mesh reinforcements are successively brought into contact with the corresponding horizontal reinforcements in the horizontal direction so as to arrange the projections to the overlap section to partially overlap, and the mesh reinforcements are thereby closely arranged to the whole ground. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a solid foundation reinforcing method and a mesh reinforcing bar used in a solid foundation method.
[0002]
[Prior art]
As this kind of reinforcing method, a method using a wire mesh made of a wire mesh has become widespread, but a joint using this welded wire mesh is a normal lap joint, which is constructed simply by lapping without binding. FIG. 6 shows an example in which the above-described welding mesh is arranged. In the arrangement, the other wire mesh 55 is partially superimposed on one wire mesh 51 and placed. In this example, half-gap is shown, and in addition, there is side-gap and one-gap.
[0003]
By the way, according to the above-described conventional bar arrangement method, when the welding wire mesh is arranged, the vertical bars 52, 56 and the horizontal bars 53, 57 are displaced in the vertical direction and the horizontal direction in the overlapping portion as shown in FIG. Poor precision and appearance. Further, as shown in (B), the thickness of the overlapped portion is four times the diameter of the reinforcing bar, and it is difficult to secure the cover thickness of the reinforcing bar particularly when arranging double bars, which also affects the thickness of the cast concrete thereafter. . Furthermore, according to the Building Standards Law, the gap between the reinforcing bars is (1) 1.5 times the maximum size of the coarse aggregate, (2) 25 mm, (3) the diameter of the round bar and the diameter of the deformed reinforcing bar (numerical value). Although there is a general structural standard that the value of 1.5 times is set to be the maximum value or more, there is a problem that the overlapping portion is liable to cause poor filling of junka (bean plate) or the like at the time of placing concrete.
[0004]
[Problems to be solved by the invention]
Therefore, the present invention solves the conventional problems as described above, and does not shift in the vertical and horizontal directions at the time of arrangement, can secure fogging, and does not cause defective filling such as junkers. It is an object of the present invention to provide a method and a mesh reinforcing bar used in the reinforcing method.
[0005]
[Means for Solving the Problems]
In order to achieve the above object, an invention according to claim 1 is a substantially rectangular mesh including a plurality of vertical streaks arranged at predetermined intervals and a plurality of horizontal streaks arranged and welded on the vertical streaks at predetermined intervals. Prepare multiple types and multiple types of reinforcing bars, and either one of the vertical bars or horizontal bars of at least one type of mesh reinforcing bar protrudes from the other, and a mesh reinforcing bar that serves as a reference at one corner of the solid foundation construction ground After the arrangement, the next mesh reinforcement is sequentially arranged in the longitudinal direction from the reference mesh reinforcement in the longitudinal direction, and the corresponding longitudinal reinforcements are in contact with each other, and the protrusions are arranged in the overlapping portion so as to partially overlap with each other, and sequentially in the horizontal direction. The corresponding transverse streaks are in contact with each other, and the protrusions are arranged in the overlapping portion so as to partially overlap each other, and thus the mesh reinforcing bars are arranged without gaps over the entire ground.
[0006]
A second aspect of the present invention is characterized in that, in the first aspect, the mesh reinforcing bar protrudes both the vertical bar and the horizontal bar, and the protruding portions are arranged in the overlapping portions in the vertical direction and the horizontal direction.
[0007]
According to a third aspect of the present invention, in the first or second aspect, the mesh reinforcing bar has a first mesh reinforcing bar having a vertical bar, a second mesh reinforcing bar having a vertical bar and a horizontal bar, and a vertical bar and a horizontal bar. It is composed of four types: a third mesh reinforcing bar that does not protrude, and a fourth mesh reinforcing bar that protrudes the horizontal bar, the first mesh reinforcing bar is arranged as a reference mesh reinforcing bar, and the second mesh reinforcing bar is arranged in the horizontal direction. Or the first mesh reinforcing bar is arranged in the vertical direction, and when the final row is reached, the third mesh reinforcing bar is positioned with respect to the first mesh reinforcing bar, and the fourth mesh reinforcing bar is connected to the third mesh reinforcing bar. It is characterized by being arranged with respect to.
[0008]
The invention according to claim 4 is a substantially square mesh reinforcing bar used in the reinforcing method according to any one of claims 1 to 3, wherein a plurality of vertical streaks arranged at predetermined intervals, and a plurality of vertical streaks are arranged on the vertical streaks at predetermined intervals. It is characterized by comprising a plurality of arranged and welded horizontal streaks, one end of each of the vertical streaks and the horizontal streaks protruding a predetermined length, and is fixed without protruding the base end.
[0009]
BEST MODE FOR CARRYING OUT THE INVENTION
An embodiment of the present invention will be described with reference to the accompanying drawings. FIG. 1 is a perspective view illustrating a solid foundation reinforcing method, FIG. 2 is a drawing showing various examples of mesh reinforcing bars used in the solid foundation reinforcing method, and FIG. 3 is a plane illustrating the same reinforcing method. FIG. 4 is an enlarged view of a portion A of FIG. 3, and FIG. 5 is an enlarged view of a portion B of FIG.
[0010]
Hereinafter, a specific description will be given with reference to the drawings. In FIG. 1, reference numeral 1 denotes a solid foundation construction ground, in this example, a rectangular section. To arrange the reinforcement on the solid foundation construction ground 1, various substantially rectangular mesh reinforcing bars are arranged in the longitudinal direction as 1-1, 2-1, 3-1. ..., 1-3, 1-4 ..., 2-1 2-2, 2-3 ..., 3-1 3-2 ... The type and configuration of the reinforcing bar will be described.
[0011]
FIG. 2A shows a first mesh reinforcing bar 11, which is composed of a plurality of vertical bars 12 arranged at equal intervals and a plurality of horizontal bars 13 arranged and welded on the vertical bars at equal intervals. One end of each of the streaks 12 protrudes by approximately three eyes of the horizontal streaks 13, and the base end of each of the vertical streaks 12 and the one end and the base end of each of the horizontal streaks 13 are fixed without protruding. The interval between the vertical stripes 12 is slightly larger than the interval between the horizontal stripes 13. (B) is a second mesh reinforcing bar 15, a plurality of vertical bars 16 arranged at equal intervals with the vertical bars 12 of the first mesh reinforcing bar 11, and a first mesh reinforcing bar 11 on the vertical bars. A plurality of horizontal streaks 17 are arranged and welded at equal intervals to the horizontal streaks 13, and one end of each of the vertical streaks 16 protrudes by about three eyes of the horizontal streaks 17. The vertical streaks 16 and the horizontal streaks 17 are fixed without protruding. (C) shows a side view of the mesh reinforcing bar 11 and the mesh reinforcing bar 15.
[0012]
FIG. 2D shows a third mesh reinforcing bar 21, a plurality of vertical bars 22 arranged at equal intervals with the vertical bars 12 of the first mesh reinforcing bars 11, and the first mesh reinforcing bars 11 on the vertical bars. And a plurality of horizontal streaks 23 arranged and welded at equal intervals to the horizontal streaks 13, and one end and base end of each of the vertical streaks 22 and the horizontal streaks 23 are fixed without protruding. (E) is a fourth mesh reinforcing bar 25, a plurality of vertical bars 26 arranged at equal intervals with the vertical bars 12 of the first mesh reinforcing bars 11, and a first mesh reinforcing bar 11 on the vertical bars. It consists of a plurality of horizontal streaks 27 arranged and welded at equal intervals to the horizontal streaks 13, one end of each of the horizontal streaks 27 protrudes by about two and a half times of the vertical streaks 26, the base end of each of the horizontal streaks 27, one end of each of the vertical streaks 26 and The base end is fixed without protruding. (F) shows a side view of the mesh reinforcing bar 21 and the mesh reinforcing bar 25.
[0013]
With reference to FIG. 1 and FIGS. 3 to 5, a description will be given of a solid foundation reinforcing method using the above-described four types of mesh reinforcing bars. When arranging the bars, a plurality of factory-produced second mesh reinforcing bars 15 are carried to the site and prepared. Similarly, the first, third, and fourth mesh reinforcing bars 11, 21, and 25 may be produced in a factory and brought to the site. However, in this example, in order to reduce the complexity of producing and transporting various types, Only the second mesh reinforcing bar 15 that can be applied is prepared, and when other types are used, the protruding portions of the vertical bars and / or horizontal bars of the second mesh reinforcing bar 15 are cut as necessary. The first, third, and fourth mesh reinforcing bars 11, 21, and 25 are formed on-site from the second mesh reinforcing bar 15 and used.
[0014]
First, a first mesh reinforcing bar 11 serving as a reference is placed on the solid foundation ground 1 at one corner, the upper left corner in FIG. 3, such that one end of the vertical bar 12 projects downward in the figure. After arranging the first mesh reinforcing bars 11, the corresponding first reinforcing bars 11 are sequentially contacted with the next first mesh reinforcing bars 11 sequentially from the reference mesh reinforcing bars in the vertical direction as described above. Are arranged so as to partially overlap at the overlapping portion, and the second mesh reinforcing bars 15 are sequentially arranged in the lateral direction so that the corresponding transverse bars 17 are in contact with each other, and the protruding ends of the transverse bars 17 partially overlap at the overlapping portion. To go.
[0015]
That is, when the first mesh reinforcing bar 11 is disposed in the vertical direction with respect to the reference mesh reinforcing bar 11, the horizontal reinforcing bar 13 at the end of the overlapping first mesh reinforcing bar 11 where the vertical bar 12 does not protrude, In the first mesh reinforcing bar 11 to be matched, the interval between the horizontal bar 13 at the end of the protruding side of the vertical bar 11 and the horizontal bar 13 is set to be equal to the first horizontal bar, and the corresponding vertical bar 12 and the vertical bar 12 are Arrange so that it touches. In this way, the necessary number of the members are arranged in the vertical direction.
[0016]
Further, when the second mesh reinforcing bar 15 is disposed in the horizontal direction with respect to the reference mesh reinforcing bar 11, when the second mesh reinforcing bar 15 to be superimposed is overlapped with the vertical bar 16 at the end of the protruding side of the horizontal bar 17 of the second mesh reinforcing bar 15, The distance between the first mesh reinforcing bar 11 and the longitudinal bar 12 at the end on the second mesh reinforcing bar 15 side of the first mesh reinforcing bar 11 is set to be equal to the first vertical bar, and the corresponding horizontal bar 17 and horizontal bar 13 are Arrange so that it touches. Next, when arranging the second mesh reinforcing bar 15 in the lateral direction with respect to the second mesh reinforcing bar 15, as shown in FIG. The interval a between the vertical bar 16 at the end and the vertical bar 16 at the end of the second mesh reinforcing bar 15 on which the horizontal bar 17 does not protrude is set to be equal to the first line of the vertical bar 16. At the same time, they are arranged so that the corresponding horizontal streaks 17 are in contact with each other. In this way, the required number is arranged in the horizontal direction.
[0017]
Next, in an arbitrary row in the second and subsequent rows, when the second mesh reinforcing bar 15 is arranged laterally with respect to the second mesh reinforcing bar 15, the second mesh reinforcing bar is placed on the second mesh reinforcing bar 15. 5 are also arranged in the vertical direction. In this case, as shown in FIG. The distance b between the horizontal bar 17 at the end of the second mesh reinforcing bar 15 protruding from the vertical bar 16 is set to be equal to the first horizontal bar, and the corresponding vertical bar 16 and vertical bar 16 are Arrange so that it touches. In this way, the required number and arrangement are made over a plurality of rows.
[0018]
When the bottom row is the last row in FIG. 3, the third mesh reinforcing bar 21 is arranged on the first mesh reinforcing bar 11 in the same manner as described above, and the fourth mesh reinforcing bar 25 is moved to the first row. 3 with respect to the mesh reinforcing bar 21. The arrangement is almost the same as the case where the second mesh reinforcing bar 15 is arranged with respect to the first mesh reinforcing bar 11, and the vertical mesh at the protruding end of the horizontal bar 27 of the fourth mesh reinforcing bar 25 to be overlapped. The interval between the bar 26 and the vertical bar 22 at the end on the fourth mesh bar 25 side of the third mesh bar 21 to be superimposed is set to be equal to the first bar of the vertical bar 26, and correspondingly The horizontal stripe 27 and the horizontal stripe 23 are arranged so as to be in contact with each other. In some cases, it is possible that the last row cannot correspond to any of the mesh reinforcing bars 21 and 25, but in such a case, a raw material composed of only one vertical bar or horizontal bar may be used. When the required number of fourth mesh reinforcing bars 25 are sequentially arranged in the lateral direction in the same manner as the second mesh reinforcing bars 15, the entire ground of the solid foundation construction ground 1 is arranged without gaps by the mesh reinforcing bars 11, 15, 21, 25. As a result, as shown in FIG.
[0019]
In the mesh reinforcing bars 11, 15, 21, and 25 arranged as described above, the overlapping vertical streaks and the vertical streaks, and the horizontal streaks and the horizontal streaks are in contact with each other, so that the vertical streaks and the horizontal streaks are shifted in the overlapping portion in the vertical and horizontal directions. There is no. The thickness of the overlapping portion is also twice as large as the rebar diameter, as is clear from FIG. For this reason, a sufficient space between the reinforcing bars can be sufficiently obtained, and poor filling of junkers or the like during casting of concrete hardly occurs.
[0020]
Then, after the mesh reinforcing bars are arranged without gaps over the entire ground as described above, in the solid foundation method, concrete is poured from above to build a solid foundation.
[0021]
In the above-described embodiment, the mesh reinforcing bars are sequentially arranged in the vertical direction and the horizontal direction based on the upper left corner, but the lower right corner may be used as the reference, and the mesh reinforcing bars may be arranged in various orders. Are possible, and the arrangement order is arbitrary.
[0022]
As described above, in the embodiment, the example in which the mesh reinforcing bars are arranged on the ground 1 using the four types of mesh reinforcing bars 11, 15, 21, and 25 is shown, but this is merely a preferable example. Also, the four types of configurations shown as mesh reinforcing bars are not necessarily limited to the number of vertical bars and horizontal bars, the distance between eyes, the protruding length, and the like. The dimensions and the like can be changed as appropriate.
[0023]
【The invention's effect】
According to the first to third aspects of the present invention, a plurality of substantially square mesh reinforcing bars including a plurality of vertical streaks arranged at a predetermined interval and a plurality of horizontal streaks arranged and welded on the vertical streaks at a predetermined interval. After preparing a type and a plurality of pieces, at least one of the vertical bars or horizontal bars of at least one of the mesh bars protrudes from the other, and a reference mesh bar is placed on one corner of the solid foundation construction ground. From the reference mesh reinforcing bar, the next mesh reinforcing bar is sequentially arranged in the longitudinal direction, the corresponding longitudinal reinforcing bars are in contact with each other, and the protrusions are arranged in the overlapping portion so as to partially overlap with each other, and sequentially correspond in the horizontal direction. The horizontal streaks are in contact with each other, the projecting portions are arranged in the overlapping portion and arranged so as to partially overlap, and in this way the mesh reinforcing bars are arranged without gaps over the entire ground, so that the vertical streaks and the vertical streaks, the horizontal streaks, And it is firmly spliced by horizontal stripes, since no shift in the vertical and horizontal directions when arranged as in the prior art, it is possible to allow the placement of reliable vertical stripe and a horizontal stripe as joint part. In addition, the thickness of the overlapping part is only twice the diameter of the reinforcing bar, and the reinforcing bars do not intersect in a complicated manner as in the past. Can be minimized. In addition, a sufficient space between the reinforcing bars in the overlapping portion can be sufficiently obtained, and poor filling of junk or the like hardly occurs at the time of placing concrete, and the quality is improved. Furthermore, there is an effect that the construction is simple and the vertical and horizontal streaks after the arrangement of the bars are linear, so that the appearance of the plane is good.
[0024]
According to the invention of claim 4, by cutting on the site one end of each of the longitudinal bars and the horizontal bars of the mesh reinforcing bar, it is possible to cope with the arrangement of various aspects, and this kind of solid foundation reinforcing bar is provided. The method can be used effectively. In addition, the use of such a mesh reinforcing bar has an effect that the efficiency of factory production can be improved and it is economical.
[Brief description of the drawings]
FIG. 1 is a perspective view illustrating an embodiment of the present invention and illustrating a method of arranging reinforcing bars on a solid foundation.
FIG. 2 is a drawing showing each example of a mesh reinforcing bar used in a solid foundation reinforcing method, (A) is a plan view of a first mesh reinforcing bar, (B) is a plan view of a second mesh reinforcing bar, (C) is a side view of the mesh reinforcement of (A) and (B), (D) is a plan view of a third mesh reinforcement, (E) is a plan view of a fourth mesh reinforcement, and (F) is (D) (E) is a side view of the mesh reinforcing bar.
FIG. 3 is a plan view illustrating a bar arrangement method according to the first embodiment.
4A is an enlarged view of a portion A in FIG. 3, and FIG. 4B is a cross-sectional view taken along line CC of FIG.
FIG. 5 is an enlarged view of a portion B in FIG. 3;
FIG. 6A is a plan view showing an example of an arrangement of a conventional welding wire mesh near an overlapping portion, and FIG. 6B is a cross-sectional view taken along line DD of FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Solid foundation construction ground 11 1st mesh reinforcement 12 Vertical reinforcement 13 Horizontal reinforcement 15 Second mesh reinforcement 16 Vertical reinforcement 17 Horizontal reinforcement 21 Third mesh reinforcement 22 Vertical reinforcement 23 Horizontal reinforcement 25 Fourth mesh reinforcement 26 Vertical reinforcement 27 Horizontal reinforcement

Claims (4)

A plurality of types and a plurality of substantially rectangular mesh rebars comprising a plurality of vertical bars arranged at predetermined intervals and a plurality of horizontal bars arranged and welded on the vertical bars at predetermined intervals are prepared, and at least one of them is prepared. One of the vertical bars or horizontal bars of the mesh reinforcement of the type is protruding from the other, and after placing a mesh reinforcement serving as a reference at one corner of the solid foundation ground, the next mesh reinforcement is applied from the reference mesh reinforcement. In the longitudinal direction, the corresponding vertical streaks are in contact with each other, and the protruding portions are arranged in the overlapping portion and are arranged so as to partially overlap, and sequentially in the horizontal direction, the corresponding horizontal streaks are in contact with each other, and the protruding portion is an overlapping portion. A solid foundation reinforcing method characterized in that mesh reinforcing bars are arranged so as to partially overlap each other, and mesh reinforcing bars are thus arranged without gaps over the entire ground. 2. The solid foundation reinforcing method according to claim 1, wherein the mesh reinforcing bar protrudes both the vertical bar and the horizontal bar, and the protruding portions are disposed in the vertical and horizontal overlapping portions. 3. A mesh reinforcing bar includes a first mesh reinforcing bar having a vertical bar projecting, a second mesh reinforcing bar having a vertical bar and a horizontal bar projecting, a third mesh reinforcing bar having neither a vertical bar nor a horizontal bar projecting, and a third mesh bar having a horizontal bar projecting. 4 mesh reinforcement, the first mesh reinforcement is arranged as a reference mesh reinforcement, the second mesh reinforcement is arranged in the horizontal direction, or the first mesh reinforcement is arranged in the vertical direction, The solid foundation according to claim 1, wherein the third mesh reinforcing bar is arranged with respect to the first mesh reinforcing bar when the last row is formed, and the fourth mesh reinforcing bar is arranged with respect to the third mesh reinforcing bar. Reinforcement method. 4. A substantially rectangular mesh reinforcing bar used in the reinforcing method according to any one of claims 1 to 3, wherein the plurality of vertical bars are arranged at predetermined intervals and the plurality of bars are arranged and welded on the vertical bars at predetermined intervals. A mesh reinforcing bar comprising a horizontal streak, wherein one end of each of a vertical streak and a horizontal streak protrudes a predetermined length, and is fixed without protruding a base end.

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