JPS6178948A - Bar arrangement structure of shearing reinforced bar - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Industrial Field of Application The present invention applies to structures such as concrete beams and columns.
In addition, this paper relates to the reinforcement structure of shear reinforcing bars used to increase shear strength.

(b), Conventional technology FIG. 7 is a front view showing the reinforcement state of conventional shear reinforcing bars;
FIG. 8 is a plan view showing the arrangement of conventional shear reinforcing bars.

Conventionally, as shown in FIGS. 7 and 8, this type of shear reinforcing bars 1 have been added in the form of a cross or parallel cross in addition to the hoop bars 5 on the outer periphery when increasing the shear force. A structure in which reinforcing bars 4 were provided was used.

(C) 0 Problems to be Solved by the Invention However, this method not only has the disadvantage that it takes a lot of time to install the additional reinforcing bars 4, but also when reinforcing against shear force in a specific direction. In particular, there was an inconvenience in that it required a lot of effort and time.

In order to eliminate the above-mentioned drawbacks, the present invention provides a shear reinforcing bar that requires less time and effort when installing reinforcing bars to increase shear force, and that can easily reinforce against shear force in a specific direction. The purpose is to provide a reinforcement structure.

(d) Means for solving the zero problem, that is, the present invention provides a linear surface for at least one surface formed by adjacent main reinforcements in a region formed by main reinforcements and hoop reinforcements. It is constructed by installing lightning-shaped reinforcing bars along the line as shear reinforcing bars.

(e) 0 effect With the above configuration, in the present invention, reinforcement against shear force is performed by lightning-shaped reinforcing bars, and furthermore, the lightning-shaped reinforcing bars are selectively installed along the plane formed by the main reinforcements. This allows the reinforcing direction to be arbitrarily selected.

(f), Example Embodiments of the present invention will be described below based on the drawings.

Fig. 1 is a front view showing an example of the reinforcing bar arrangement structure according to the present invention, Fig. 2 is a plan view of Fig. 1, and Fig. 3 is a front view showing an example of a lightning-shaped reinforcing bar. , FIG. 4 is a front view showing another example of a lightning-shaped reinforcing bar, and FIGS. 5 and 6 are partially enlarged views showing how the respective reinforcing bars constituting the lightning-shaped reinforcing bar are connected.

The concrete pillar 2 that is the structure is shown in Figures 1 and 2.
As shown in the figure, there are four main reinforcements 3 installed in the concrete in the vertical direction in FIG. , are provided to connect each main reinforcement 3 at a constant pitch P. Four lightning-shaped reinforcing bars 6, shown in FIG.
They are each set up in the form of an internal structure. The lightning-shaped reinforcing bars 6 have two linear reinforcing bars 6a and a zigzag-shaped reinforcing bar 6b that connects the reinforcing bars 6a, and the reinforcing bars 6a16b are, as shown in FIG.
The reinforcing bar 6b engages with the reinforcing bar 6a through a bent portion, or is fixed to the reinforcing bar 6a by welding or the like, as shown in FIG.

(g) 0 Effects of the Invention As explained above, according to the present invention, the lightning-shaped reinforcing bars 6 and the hoop bars 5 are used as shear reinforcing bars 1 of a structure such as a column 2.
Therefore, the additional reinforcing bars 4 are added as shown in Fig. 8 (bl, (
As shown in C), it is possible to easily achieve the same strength as the cross-shaped method or the cross-shaped method.

In addition, to install the lightning-shaped reinforcing bars 6 inside the column 2, before concrete is poured, the lightning-shaped reinforcing bars 6 are dropped into the area 7 surrounded by the main reinforcement 3 and the hoop reinforcement 5 from the upper part of FIG. This can be done by temporarily fixing the main reinforcement 3 and the hoop reinforcement 5 with wire or the like, so it is extremely simple and requires no effort.

Furthermore, the lightning-shaped reinforcing bars 6 are attached to the surface S of the structure to be reinforced.
Since F can be set arbitrarily and selectively, the installation mode of the lightning-shaped reinforcing bars 6 can be selected as appropriate depending on the state of force acting on the structure, increasing the degree of freedom in the design of the structure. You can get it high.

In addition, although the above-mentioned Example described the case where this invention was applied to the column 2, it goes without saying that this invention can be applied not only to the column 2 but also to a beam etc.

Further, the shape of the lightning-shaped reinforcing bar 6 may be the shape shown in FIG. 4 in addition to the shape shown in FIG. 3, and various other modifications are possible.

Furthermore, the hoop line 5 is not limited to the simple annular one shown in FIG. 1, but it goes without saying that it may be a spiral hoop formed in a spiral shape.

[Brief explanation of the drawing]

FIG. 1 is a front view showing an example of the shear reinforcing bar arrangement structure according to the present invention, FIG. 2 is a plan view of FIG. 1, and FIG. 3 is a front view showing an example of lightning-shaped reinforcing bars. Figure 4 is a front view showing another example of lightning-shaped reinforcing bars, Figures 5 and 6 are partially enlarged views showing how the reinforcing bars that make up the lightning-shaped reinforcing bars are connected, and Figure 7 is a conventional shear reinforcement. FIG. 8 is a front view showing the arrangement of reinforcement bars, and FIG. 8 is a plan view showing the arrangement of conventional shear reinforcing bars. 1 ・Shear reinforcement 2 Structure (column) 3 Main reinforcement 5 ・・Hoop reinforcement 6 Lightning-shaped reinforcement 7 ・・Area SF ・・Surface applicant Mitsui Construction Co., Ltd. agent Patent attorney Phase 1) Shinji Figure 1 Figure 2 Figure 6b

Claims (1)

[Claims] In a concrete structure having a plurality of main reinforcements and in which hoop reinforcements are provided as shear reinforcing reinforcements to connect the main reinforcements, adjacent A reinforcing structure for shear reinforcing bars constructed by installing lightning-shaped reinforcing bars as shear reinforcing bars along at least one of the faces formed by the main reinforcing bars.