JPH0710151U - Angle adjustable type rebar coupler - Google Patents

Abstract

(57) [Abstract] [Purpose] It eliminates overlapping reinforcements at intersections and bends of rebars, and enables flexible adjustment according to the relative angle of rebars. Improves reliability. [Structure] Flat portions 2a and 3a are formed at the central portions or the end portions of a pair of couplers 2 and 3 into which a reinforcing bar 1 is inserted,
It is characterized in that both flat portions 2a and 3a of the couplers 2 and 3 are superposed and assembled by attaching a shaft 5 so that the relative angle can be adjusted.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 INDUSTRIAL APPLICABILITY The present invention is suitable for connecting beams, columns, earthquake-resistant walls (openings), etc. of various RC buildings to reinforcing reinforcements, etc. at desired relative angles in an X-shape, T-shape, L-shape, etc. Angle adjustment This relates to a flexible rebar coupler.

[0002]

[Prior art]

 Conventionally, in various RC buildings, the boundary beam b connecting the multi-story earthquake-resistant walls a of high-rise and low-rise buildings as shown in Fig. 3 and the short column c with a considerably small shear span ratio are more seismic than normal beams and columns. Sometimes it receives a large shearing force. In order to improve the structural performance such as shear strength and toughness of these members, the reinforcing bars 1 are applied in a crossed X shape as shown in the figure, or the openings s formed in the earthquake resistant wall a as shown in FIG. When the end of the diagonal reinforcing bar 1 is crossed around the cross section and the bending bar 1 is connected to the beam d in a T-shape or L-shape as shown in FIG. If necessary, connect the ends of the rebars at the bends or bends in series with a coupler, sleeve, bending joint, etc. (not shown), or shell the rebar 1 as shown in Fig. 6. A joining means (for example, Japanese Patent Publication No. 58-535) has been developed which is surrounded by a body f and injects molten metal or mortar between the shell f and the rebar 1 to form a plurality of knots.

[0003]

[Problems to be solved by the device]

 Conventionally, in various RC buildings, when reinforcing bars such as beams, columns, and earthquake-resistant walls are arranged in X, T, and L shapes as described above, it is necessary to use couplers, sleeves, curved joints, etc. The rebars of the book are connected in series, but the intersections and bends of these reinforcements become overlapping reinforcements, which makes it impossible to remove the space between the reinforcements in relation to the main reinforcements. In the connecting means at the reinforcing bar crossing portion, a plurality of reinforcing bars are connected in the same plane to eliminate the overlapping reinforcing bar, but the relative angle of the reinforcing bars is specified and cannot be adjusted. Moreover, the shell has a larger thickness size than the reinforcing bar, and there is a problem that concrete cannot be sufficiently filled when it is used for connecting orthogonal main bars in a column-beam joint.

The present invention was developed to address the above-mentioned problems, and its purpose is to eliminate overlapping reinforcements at intersections and bent portions of reinforcing bars, and The purpose is to provide an angle-adjustable rebar coupler that enables versatile adjustment in accordance with the relative angle and has improved versatility and connection, bar arrangement performance, and reliability.

[0005]

[Means for Solving the Problems]

 The present invention was constructed by forming flat portions at the central portion or the end portions of a pair of couplers into which reinforcing bars are inserted, and superposing both flat portions of the couplers so that the relative angle can be adjusted so as to be axially attached. This eliminates overlapping bar arrangements at the intersections and bends of the reinforcing bars, and at the same time enables flexible adjustment according to the relative angle of the reinforcing bars.

[0006]

[Action]

 A flat portion is formed at each of the center portion or the end portion of a pair of couplers into which the reinforcing bars are inserted, and both flat portions of the couplers are overlapped and axially attached so that the relative angle can be adjusted to form an X shape, a T shape, or an L shape. Assembled in a circular shape, and inserting the ends of each rebar into both ends or one end of both couplers eliminates overlapping reinforcement at the intersections and bends of the rebar, and also improves the relative angle of the rebar. Correspondingly freely adjusted, the versatility as well as excellent reinforcement connection, reinforcement performance and reliability are obtained.

[0007]

【Example】

 1A to 1D show a first embodiment of the present invention, FIG. 2A shows a second embodiment, FIG. 2B shows a third embodiment, and FIGS. Show. In FIG. 1, 1 is a rebar such as a threaded bar (deformed bar), 2 and 3 are couplers with insertion holes for inserting the ends of the rebar 1, and 2a and 3a are formed in the center of the couplers 2 and 3. The flat parts 5 are pivotally mounted by bolts whose relative angles are adjustable in the central parts of both flat parts 2a and 3a, and 10 is the angle adjustable type rebar coupler of the first embodiment shown in FIG. In the first embodiment, flat portions 2a and 3a are respectively formed in the central portions of a pair of couplers 2 and 3 into which the reinforcing bar 1 is inserted, and the flat portions 2a and 3a of the couplers 2 and 3 are superposed to form a relative portion. The angle is adjustable and the angle-adjustable rebar coupler 10 is assembled and assembled.

More specifically, in the above-described angle-adjustable rebar coupler 10, the pair of couplers 2 and 3 has a relatively large-diameter rebar (deformed bar such as threaded bar rebar) 1 having an end portion X-shaped. It is applied for arranging by intersecting in a circular shape. For example, by inserting the ends of the rebar 1 into the insertion holes at both ends thereof and pressing the couplers 2 and 3 onto the rebar 1 by an appropriate means. The structure is such that the rattling is stopped, or resin or metal, etc. is injected and grouted between the two. Further, the flat portions 2a and 3a formed in the central portion are preferably formed in a flat shape such that the cross-sectional shape of the coupler portion is substantially halved as shown in the figure, and the flat portions 2a and 3a are reversed. Then, they are polymerized, and the central parts are axially attached 5 by bolts or the like to assemble both couplers 2 and 3 in substantially the same plane as shown in FIG. 1. One coupler 2 and the other coupler 3 are the same. As shown by the dotted line in the plane, the structure is such that the relative angle is adjustable and the shaft 5 is attached.

The freely connectable joint type rebar coupler 10 according to the first embodiment includes a pair of couplers 2 and 3 as described above, which is capable of adjusting the relative angle at the central portions of the flat portions 2a and 3a formed in the central portion. As shown in Fig. 1, when the ends of the reinforcing bars (4 pieces) 1 are inserted into the ends of the couplers 2 and 3, respectively, as shown in Fig. 1, the reinforcing bars 1 and the couplers 2 and 3 are in the same plane. It is easy to connect in an X shape with each other, effectively eliminating the overlapping arrangement of both couplers 2 and 3 with each rebar (4 pieces) as shown in the figure, and the relative angle of the other coupler 3 with respect to the coupler 2. Can be freely adjusted as shown by the dotted line, and is used as a reinforcing bar coupler for X-shaped bar arrangement with a relatively small crossing angle applied to the boundary beam b and the short column c shown in FIG. 3 and also shown in FIG. A right angle crossing cap such as the diagonal reinforcing bar 1 to be installed around the opening s of the earthquake resistant wall a. Similarly, it can be easily and accurately applied.

In the second embodiment shown in FIG. 2A, reference numerals 12 and 13 are couplers, 12a is a flat portion formed at an end of the coupler 12, and 13a is a flat portion formed at a central portion of the coupler 13 in the drawing. The flat portions 12a and 13a are formed at the ends or the central portions of the pair of couplers 12 and 13 into which the reinforcing bars 1 are inserted, and the flat portions 12a and 13a of the couplers 12 and 13 are superposed to each other. The angle-adjustable type rebar coupler 20 is assembled by attaching the shafts 5 so that the angle can be adjusted. Compared with the first embodiment, a flat portion 12a is formed at the end of the coupler 12, and the couplers 12 and 13 are formed. It is characterized by a T-shaped assembly in which the relative angle can be adjusted. The rebar 1 is inserted into one end of the coupler 12, and the rebar 1 is inserted into both ends of the coupler 13, respectively. Reinforcing bar 1 is connected in a T shape, and It is suitable for the T-shaped reinforcement when bending reinforcement of beam d as shown in Fig. 5 while eliminating the overlapping reinforcement of the connection part and making the relative angle of one reinforcement adjustable relative to the other reinforcement. Basically, the same operation and effect as in the first embodiment can be obtained.

In the third embodiment shown in FIG. 2B, in the figure, 22 and 23 are couplers, 22a and 23a are flat portions formed at the end portions of the couplers 22 and 23, and the reinforcing bar 1 is inserted and inserted. Of the couplers 22 and 23 are formed with flat portions 22a and 23a, and the flat portions 22a and 23a of the couplers 22 and 23 are overlapped with each other to adjust the relative angle. The flexible type rebar coupler 30 is characterized in that, compared to the first embodiment, the flat portions 22a are formed at the ends of the couplers 22 and 23, and the couplers 22 and 23 are assembled in an L shape. The rebar 1 is inserted into each end of the couplers 22 and 23 to connect the two rebars 1 in an L-shape, eliminating the overlapping bar arrangement at this connecting part and adjusting the relative angle of the rebar freely. , The bending arrangement of the beam d as shown in FIG. It is suitable for the L-shaped arrangement of muscles, and basically has the same operation and effect as those of the first embodiment.

In each of the above-described embodiments, the mounting hole of each coupler is compatible with various diameters of the reinforcing bar, and it is possible to design to insert reinforcing bars having different diameters for each coupler. In addition to the locations shown in Fig. 3 to Fig. 5, the locations where they are used are preferably used for reinforcing the joints between columns and beams, and for reinforcing the earthquake resistant walls of a nuclear reactor building with a large amount of rebar. It

[0013]

[Effect of device]

 According to the present invention, as described above, a flat portion is formed at each of the central portion or the end portions of a pair of couplers into which the reinforcing bars are inserted, and the flat portions are overlapped so that the relative angle is adjustable. This makes it easy to connect X-shaped, T-shaped, or L-shaped reinforcing bars, eliminates overlapping reinforcement at intersections and bends of reinforcing bars, and enables flexible adjustment according to the relative angle of reinforcing bars. , Rebar connection, bar arrangement performance and reliability are significantly improved. Furthermore, it has the effects of being versatile and offered at low cost.

[Brief description of drawings]

FIG. 1 is a plan view (A) and X- showing a first embodiment of the present invention.
X sectional view (B), Ya-Ya sectional view (C), and Yb-Y
b Sectional view (D)

FIG. 2 is a plan view showing a second embodiment (A) and a plan view showing a third embodiment (B).

[Figure 3] Side view of high-rise and low-rise buildings showing an example of application to boundary beams and short columns

FIG. 4 is a side view showing an example in which the opening of the load-bearing wall is applied to a reinforcing bar.

FIG. 5 is a cross-sectional view showing an application example of a beam to a bending line.

FIG. 6 is a plan view showing a conventional example of a reinforcing bar connecting jig (A).
And ZZ view (B).

[Explanation of symbols]

1 Reinforcing bar (different diameter reinforcing bar) 5 Shaft attachment (bolt) 2,3,12,13,22,23 Coupler 2a, 3a, 12a, 13a, 22a, 23a Flat part

Claims (1)

[Scope of utility model registration request] 1. A flat part is formed at each of a central part or an end part of a pair of couplers into which reinforcing bars are inserted, and both flat parts of the coupler are superposed to be assembled by axially attaching the relative angle adjustable. Angle adjustable type rebar coupler characterized by.