JPH044013Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] This invention relates to a two-way continuous frame reinforcing bar embedded in a concrete member such as a bridge girder.

[Prior art]

Conventionally, in concrete members such as bridge girders,
As shown in Fig. 7, the two-way frame-shaped reinforcing bars buried so as to extend in a direction perpendicular to the member axis direction are upper horizontal frame-shaped reinforcing bars 3 manufactured separately.
A two-way frame-shaped reinforcing bar 6 as shown in FIG. 8 is known, which is constructed by connecting a vertical frame-shaped reinforcing bar 4 and a lower frame-shaped reinforcing bar 5 with a binding wire (thin iron wire). The two-way frame reinforcing bars 6 are then buried in a concrete member 7 as shown in FIG.

[The problem that the idea aims to solve]

In the case of the conventional two-way frame reinforcing bar 6, there are many overlapping locations at the ends of the reinforcing bars, and it is necessary to bind each overlapping location, so there are many binding locations, so when manufacturing the two-way frame reinforcing bar 6. As the number of steps increases, manufacturing is complicated and costs increase, and there is a risk that the binding parts may loosen and each reinforcing bar may shift relative to each other.Furthermore, the reinforcing bar material has to be cut many times, so the reinforcing bar material The amount of scraps increases, making it uneconomical.

The purpose of this invention is to provide a two-way continuous frame reinforcing bar that is highly stable in shape and can be manufactured at low cost.

[Means to solve the problem]

In order to achieve the above object, in the two-way continuous frame reinforcing bar of this invention, one reinforcing bar is bent and buried so as to extend in a direction perpendicular to the axial direction of the concrete member cross section. A horizontal frame-shaped reinforcing bar 1 and a vertical frame-shaped reinforcing bar 2 continuous thereto are formed.

[Effect]

A single reinforcing bar is bent many times to form horizontal reinforcing bars 1 and vertical reinforcing bars 2 in succession.

〔Example〕

Next, this invention will be explained in detail using illustrated examples.

FIGS. 1 and 2 show a two-way continuous frame reinforcing bar according to a first embodiment of this invention.
The reinforcing bar material is bent many times in the same direction to form a lower inclined reinforcing bar 9 extending diagonally downward from the right side to the left side, crossing the vertical center line 8 of the frame-shaped reinforcing bar, and its lower side. Lower end side vertical reinforcing bar 1 descending from
0, and a lower end horizontal reinforcing bar 11 extending horizontally from its lower side toward the right beyond the vertical center line 8 of the frame-shaped reinforcing bar.
and an intermediate vertical reinforcing bar 1 rising vertically from its end.
2, an upper end horizontal reinforcing bar 13 that extends horizontally from its upper end toward the left beyond the vertical center line 8 of the frame-shaped reinforcing bar, and an upper end side vertical reinforcing bar 1 that descends from the end thereof.
4, and an upper inclined reinforcing bar 1 extending diagonally downward from its lower side to a position above the vertical center line 8 of the frame-shaped reinforcing bar.
5, an upper inclined reinforcing bar 16 extending obliquely upward from the end of the upper inclined reinforcing bar 15 on the vertical center line 8 of the frame-shaped reinforcing bar toward the right side, and an upper end side vertical reinforcing bar 17 rising from the end thereof; An upper end horizontal reinforcing bar 18 extending horizontally beyond the vertical center line 8 of the frame-shaped reinforcing bar from its upper end toward the left, an intermediate vertical reinforcing bar 19 descending from its end, and a frame-shaped reinforcing bar extending from its lower end toward the right. A lower end horizontal reinforcing bar 20 extending horizontally beyond the vertical center line 8, a lower end side vertical reinforcing bar 21 rising from the end thereof, and a lower end horizontal reinforcing bar 21 extending horizontally from the upper end to the left side and diagonally crossing the vertical center line 8 of the frame-shaped reinforcing bar. Lower inclined reinforcing bars 22 extending upward are sequentially formed.

The lower end side vertical reinforcing bars 10 and the lower end side vertical reinforcing bars 2
1. The intermediate vertical reinforcing bars 12, the intermediate vertical reinforcing bars 19, the upper end side vertical reinforcing bars 14, and the upper end side vertical reinforcing bars 17 are respectively arranged at the same distance from the frame-shaped reinforcing bar vertical center line 8, and are arranged at the same distance from the lower end horizontal reinforcing bars 11 and the lower end horizontal reinforcing bars 11. The reinforcing bars 20 are arranged at the same level, and the upper end horizontal reinforcing bars 13 and the upper end horizontal reinforcing bars 18 are arranged at the same level.

The upper end horizontal reinforcing bars 13 and 18 and the upper end side vertical reinforcing bars 1
4, 17 and the upper inclined reinforcing bars 15, 16 constitute the horizontal frame reinforcing bar 1 used as the upper flange reinforcement, and the intermediate vertical reinforcing bars 12, 19, the lower inclined reinforcing bars 9, 22, and the lower end side vertical reinforcing bars 10 and 21 and the lower end horizontal reinforcing bars 11 and 20 constitute a vertical frame reinforcing bar 2 that is used as a stirrup bar with a straddle bar.

Also, the overlapping part of the upper horizontal reinforcing bars 13 and 18, the overlapping part of the lower end horizontal reinforcing bars 11 and 21, the intersection of the intermediate part of the lower end inclined reinforcing bar 9 and the intermediate vertical reinforcing bar 19, and the intermediate vertical reinforcing bar 1
2 and the lower inclined reinforcing bars 22 are bound by binding wires 25, respectively.

The two-way continuous frame reinforcing bar consisting of the horizontal frame reinforcing bar 1 and the vertical frame reinforcing bar 2 configured as described above is
As shown in the figure, it is buried so as to extend in a direction perpendicular to the axial direction of the cross section of a concrete member 7 such as a concrete girder.

FIGS. 4 and 5 show a two-way continuous frame reinforcing bar according to a second embodiment of this invention.
The reinforcing bar material is bent in the same direction many times, and the upper inclined reinforcing bar 16 extends diagonally upward from the left side to the right side, crossing the vertical center line 8 of the frame-shaped reinforcing bar, and rises from the end thereof. Upper end side vertical reinforcing bars 17 and upper end horizontal reinforcing bars 1 extending horizontally from the upper end toward the left beyond the frame-shaped reinforcing bar vertical center line 8
8, and an intermediate vertical reinforcing bar 19 descending from the end thereof,
A lower end horizontal reinforcing bar 20 extending horizontally from the lower end toward the right side beyond the vertical center line 8 of the frame-shaped reinforcing bar, an intermediate vertical reinforcing bar 12 rising from the end thereof, and a frame-shaped reinforcing bar extending from the end toward the left side. An upper end horizontal reinforcing bar 13 extends horizontally beyond the vertical center line 8, an upper end side vertical reinforcing bar 14 descends from the end thereof, and a frame reinforcing bar diagonally extends from the lower end toward the right side beyond the vertical center line 8. Upper inclined reinforcing bars 15 extending downward are sequentially formed.

The intermediate longitudinal reinforcing bars 12 and the intermediate longitudinal reinforcing bars 19 and the upper end side longitudinal reinforcing bars 14 and the upper end side longitudinal reinforcing bars 17 are as follows:
The upper end horizontal reinforcing bars 13 and 18 are arranged at the same distance from the vertical center line 8 of the frame-shaped reinforcing bars, and the upper end horizontal reinforcing bars 13 and 18 are arranged at the same level.
, upper end side vertical reinforcing bars 14, 17, and upper inclined reinforcing bars 1
5 and 16 constitute a horizontal frame reinforcing bar 1 used as an upper flange reinforcing bar, and the intermediate vertical reinforcing bar 1
2 and 19 and the horizontal reinforcing bars between them constitute the vertical frame reinforcing bars 2 used as stirrup bars.

Also, the overlapping part of the upper horizontal reinforcing bars 13 and 18, the intersection of the middle part of the upper inclined reinforcing bar 15 and the intermediate vertical reinforcing bar 19, the middle part of the upper inclined reinforcing bar 16 and the middle longitudinal reinforcing bar 12
The intersections with are bound by binding wires 25, respectively.

The two-way continuous frame reinforcing bar consisting of the horizontal frame reinforcing bar 1 and the vertical frame reinforcing bar 2 configured as described above is the sixth
As shown in the figure, it is buried so as to extend in a direction perpendicular to the axial direction of the concrete member 7 such as a bridge girder. In addition, in FIG. 3, FIG. 6, and FIG. 9, 23 is a prestressed steel material, and 24 is a thread.

In each of the embodiments described above, since the bending directions are the same, continuous bending by a machine can be easily performed.

In the case of the second embodiment, the bending start position of the reinforcing bar may be set at any location.

When implementing this idea, the reinforcing bars may be slightly bent in the longitudinal direction (in the longitudinal direction of the concrete member) at the intersection of the reinforcing bars so that the reinforcing bars do not collide with each other.

[Effect of idea]

Since this invention is configured as described above, it produces the effects described below.

Since the frame reinforcing bars in two directions are continuous, the horizontal and vertical frame reinforcing bars will not shift and move, unlike when horizontal and vertical frame reinforcing bars are tied together. The shape of the two-way frame reinforcing bars can be stabilized, and the number of times the reinforcing bars are cut and the number of binding points is reduced, which reduces the number of steps required to produce two-way frame reinforcing bars. Shaped reinforcing bars can be manufactured easily and quickly at low cost, and the number of cuts of reinforcing bars is reduced compared to the case of manufacturing the conventional two-way frame reinforcing bars, so scraps of reinforcing bars can be easily and quickly produced. It is economical because the amount of

[Brief explanation of the drawing]

Fig. 1 is a schematic front view showing a two-way continuous frame reinforcing bar according to the first embodiment of this invention, Fig. 2 is a perspective view thereof, and Fig. 3 is a use of the two-way continuous frame reinforcing bar of the first embodiment. It is a vertical front view showing a state. Fig. 4 is a schematic front view showing a two-way continuous frame reinforcing bar according to the second embodiment of this invention, Fig. 5 is a perspective view thereof, and Fig. 6 is a use of the two-way continuous frame reinforcing bar of the second embodiment. It is a vertical front view showing a state. Fig. 7 is a front view showing separated reinforcing bar units constituting a conventional two-way frame reinforcing bar, Fig. 8 is a front view of a conventional two-way frame reinforcing bar, and Fig. 9 is a conventional two-way frame reinforcing bar. FIG. In the figure, 1 is a horizontal frame reinforcing bar, 2 is a vertical frame reinforcing bar, 7 is a concrete member, 8 is a vertical center line of the frame reinforcing bar, 9 is a lower inclined reinforcing bar, 10 is a lower end side vertical reinforcing bar,
11 is the lower end horizontal reinforcing bar, 12 is the middle vertical reinforcing bar, 13 is the upper end horizontal reinforcing bar, 14 is the upper end side vertical reinforcing bar, 15 is the upper inclined reinforcing bar, 16 is the upper inclined reinforcing bar, 17 is the upper end side vertical reinforcing bar, 18 is the upper end horizontal reinforcing bar. Reinforcing bar, 19 is intermediate vertical reinforcing bar, 2
0 is a lower end horizontal reinforcing bar, 21 is a lower end side longitudinal reinforcing bar, and 22 is a lower inclined reinforcing bar.

Claims (1)

[Scope of utility model registration request] A single reinforcing bar is bent to form horizontal frame reinforcing bars 1 and vertical frame reinforcing bars 2 that are buried so as to extend in a direction orthogonal to the axial direction of the concrete member cross section. Two-way continuous frame reinforcing bar.