JPH0324670Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field] The present invention relates to welded reinforcing bars that are buried in the foundation when the foundation of a building is poured.

[Background Art] Normally, when constructing a building, welded reinforcing bars are buried in predetermined portions of the concrete foundation when the concrete foundation is cast. For example, in the case of the concrete foundation shown in Fig. 1, welded reinforcing bars 2 and 3 are attached to parts 1A, 1B, and 1C of the concrete foundation 1, respectively.
will be buried.

As shown in FIG. 2, the welded reinforcing bars are base bars 5 buried in footings 4 of the concrete foundation 1,
It is composed of rising reinforcements 7 buried in the rising portion 6 and connected at right angles to the base reinforcement 5, but as buildings are prefabricated, several types of base reinforcements 5 and rising reinforcements 7 of different lengths are used. are made into basic modules through factory production, and these are assembled to form a predetermined length.

By modularizing reinforcing bars in this way, it is possible to reduce on-site work, stabilize quality, and reduce costs. On the other hand, since the overall length of reinforcing bars is based on the distance between the centers of concrete foundation 1, the foundation thickness Dimensions often vary depending on the

For example, the base reinforcement 5A of L ₁ shown in FIG. 3 and the base reinforcement 5B of L ₂ shown in FIG. 4 are connected to each other by a joint reinforcement 8 as shown in FIG.
Even if it is used for the part 1A shown in the figure, it is shorter by ΔL ₁ than the length of the part 1A, and the base muscle 5B is shorter by ΔL ₂ than the part 1B, and furthermore, the base muscle 5A is shorter by ΔL than the part 1C. Only ₃ short. Therefore, in order to accommodate such various building dimensions, many types of base reinforcements and rising reinforcements must be prepared from the beginning.

However, preparing many types of base reinforcements 5 and rising reinforcements 7 from the beginning makes it easy for errors to occur during handling such as transportation and construction, increases management costs, and prevents rusting due to long-term storage. It becomes a problem.

[Object of the invention] Here, an object of the invention is to provide a welded reinforcing bar that maintains the advantages of modularizing reinforcing bars and eliminates the disadvantages associated with modularizing.

[Structure of the invention] Here, the present invention attempts to achieve the above-mentioned object by attaching adjustment bars to the basic modular bars of preset basic dimensions so as to be able to adjust their positions.

Specifically, a basic modular reinforcement of a predetermined length is formed by sequentially connecting a plurality of vertical reinforcements arranged parallel to each other at regular intervals with several horizontal reinforcements perpendicular to the longitudinal reinforcements,
It is characterized by consisting of an adjustment muscle in which a longitudinal muscle is connected to several mutually parallel horizontal muscles that are connected to the horizontal muscle of the basic modular muscle so that the position can be adjusted.

[Embodiment] FIG. 6 shows an exploded perspective view of the basic modular muscle 11 and the adjustment muscle 21 of this embodiment in which the present invention is applied to the base muscle. The basic module muscle 11
consists of a plurality of longitudinal bars 12 arranged parallel to each other at a constant pitch interval a, and two longitudinal bars 12 arranged at right angles at both ends of these longitudinal bars 12 to sequentially connect the longitudinal bars 12 by welding or the like. 13, and the overall length is set to a predetermined dimension L.

On the other hand, the adjustment bar 21 is connected at right angles to a pair of longitudinal bars 22 arranged at a distance equal to the pitch interval a of the longitudinal bars 12 of the basic modular bar 11, and to both ends of the longitudinal bars 22, and has one end. The side is the horizontal strip 13
The horizontal strip 23 is connected to the horizontal strip 23.

Here, in order to connect the adjustment muscle 21 to the basic modular muscle 11, as shown in FIG.
3, and the overlapping portions of the horizontal reinforcements 23 and 13 are connected to each other by binding wires 31. At this time, change the horizontal muscle 23 of the adjustment muscle 21 to the basic modular muscle 1.
By sliding it in the axial direction with respect to the horizontal stripes 13 of No. 1, the overall length can be adjusted. In this case, the adjustment range is the pitch interval a of the vertical stripes 12.
It is preferable to carry out the test within the range of . In addition, adjustment muscle 2
1 is slid by the pitch interval a of the vertical strips 12, and when the nominal diameter of the horizontal strips 13 and 23 is d, the horizontal strips 23 are adjusted so that the length of the overlapping portion of the horizontal strips 13 and 23 is 45 d or more. The length of is set in advance.

Therefore, according to this embodiment, since the adjustment bars 21 are attached to the basic modular bars 11 so that their positions can be freely adjusted, there are advantages of modularization of reinforcing bars.
In other words, while reducing on-site work, stabilizing quality, and reducing costs, it is possible to eliminate the drawbacks associated with modularization of reinforcing bars, and to arbitrarily set the overall length within predetermined dimensions. Therefore, it can be applied to various building dimensions, and as a result, the types of base reinforcement can be significantly reduced. This can reduce handling errors during transportation, construction, etc., reduce management costs, and reduce rusting due to long-term storage.

In addition, since the interval between the vertical bars 22 of the adjustment bars 21 is made equal to the pitch interval of the vertical bars 12 of the basic modular bars 11, and the adjustment range of the adjustment bars 21 is within the range of the pitch interval a of the vertical bars 12, the strength is increased. There is no problem.

In addition, in implementing the adjustment bar 21, for example, as shown in FIG.
As shown in Fig. 9, both ends of the basic module muscle 1
It may also be connected to the horizontal strip 13 of 1 by a binding wire 31 or the like. In this way, the joint reinforcement 8 when connecting two base reinforcements to each other can be omitted.

Further, the number of horizontal reinforcements 23 of the adjustment reinforcement 21 is not limited to two in the above embodiment, but should be determined according to the number of horizontal reinforcements 13 of the basic modular reinforcement 11. Furthermore, the number of vertical stripes 22 may be one or three or more.

Further, in the above embodiments, the base muscles were explained, but the present invention can be similarly applied to the standing muscles.

[Effects of the invention] As described above, according to the invention, it is possible to provide welded reinforcing bars for foundations that can be applied to foundations of various dimensions while maintaining the advantages of modularization of reinforcing bars and significantly reducing the number of types. I can do it.

[Brief explanation of the drawing]

Figure 1 is a diagram showing the arrangement of welded reinforcing bars buried in the concrete foundation of a building, Figure 2 is a sectional view taken along the - line in Figure 1, and Figures 3 to 5 show various base reinforcements of different lengths. 6 is an exploded perspective view showing one embodiment of the invention, FIG. 7 is a perspective view of the connected state, FIG. 8 is an exploded perspective view showing another embodiment of the invention, and FIG. 9 is an exploded perspective view showing one embodiment of the invention. The figure is a perspective view showing the connected state. 11...basic modular muscle, 12...vertical muscle, 1
3...Horizontal muscle, 21...Adjustment muscle, 22...Vertical muscle, 2
3... Lateral muscle.

Claims (1)

[Claims for Utility Model Registration] (1) A basic modular reinforcement of a predetermined length in which a plurality of vertical reinforcements arranged parallel to each other at regular intervals are successively connected by several horizontal reinforcements perpendicular to the longitudinal reinforcements, and this basic modular reinforcement. A welded reinforcing bar for a foundation is characterized in that it consists of adjustment bars in which vertical bars are connected to several mutually parallel horizontal bars that are connected to the horizontal bars of modular bars so that their positions can be adjusted. (2) Utility model registration The welded reinforcing bar for a foundation according to claim 1, characterized in that the vertical bars of the adjustment bar are arranged at intervals equal to the pitch spacing of the vertical bars of the basic modular bar. (3) Claim 1 or 2 of the utility model registration claim, characterized in that the adjustment bar is connected to the basic modular bar so that its position can be adjusted within the pitch interval of the longitudinal bars. welded reinforcing bars on the foundation.