KR200230871Y1 - Reinforcing bar connector - Google Patents

Abstract

The present invention relates to a reinforced concrete joint capable of perfectly transmitting and resisting compressive and tensile stresses imposed by reinforcing bars due to mechanical joining of reinforcing bars in reinforced concrete structures such as bridges and buildings.

The reinforcing joint of the present invention is composed of upper and lower reinforcing steel joint plates 10a and 10b, a reinforcing steel spacing member 35, and an inner circumferential frusto-conical joint cone 20.

The upper and lower reinforcing joint plates 10a and 10b have a substantially semicircular or arcuate cross section and are formed on the inner peripheral surface of a deformed reinforcing bar made up of upper and lower sides staggered with each other, The grooves 12a and 12b are vertically asymmetrically arranged and the other inner circumferential surface is formed of a penetration plate 11 formed of a sharp sawtooth or a mountain-like crest of a female thread or a plurality of sharpened protrusions, A reinforcing bar (35) is inserted in the space between the ends of the connecting bars to resist the excessive compressive force.

On the other hand, the left and right outer circumferential surfaces of the upper and lower reinforcing plate joints 10a and 10b are formed into a truncated conical shape with a gentle slope, and a joint conical tube 20 having a truncated conical inner circumferential surface with a gentle slope is formed The upper and lower bars 32a and 32b of the reinforcing bars are tightly fitted into the engaging shoulder grooves 12a and 12b of the upper and lower reinforcing plate joints when the upper and lower reinforcing bars 10a and 10b are squeezed, The portion 30 penetrates the infiltration surface 11 such as a saw tooth, a mountain of a screw, and a plurality of protrusions to move the reinforcing bar finely or move the engaging jaw grooves 12a , 12b) without any relaxation or release phenomenon.

Description

Reinforcing bar connector < RTI ID = 0.0 >

The present invention relates to a reinforced concrete joint capable of perfectly transferring and compressing compressive and tensile forces imposed on reinforcing bars by mechanical connection of reinforcing bars in reinforced concrete structures such as bridges and buildings, and a method of reinforcing reinforcing bars.

Many types of reinforced concrete joints have been developed. Most of the reinforced concrete joints correspond to the compression and tensile forces of the reinforcing bars by providing the concave inner circumferential surface engaging jaw grooves 12 to allow the deformed reinforcing bars 32 to be caught. However, Since the upper and lower nodes 32c and 32d of the rib are not aligned on the straight line in the KS standard but are arranged to be shifted to some extent and thus manufactured and sold in this way, most of the existing reinforcing joints have the engagement grooves 12 on the inner circumferential surface, When the tensile force or the compressive force is applied to the reinforcing bar, only one of the upper and lower barriers can resist, so that sufficient resistance can be exhibited. There was no

On the other hand, most of the screw-type reinforced concrete joints as shown in Fig. 5 are always maintained a fine lump during the manufacturing and construction processes. When the compressive and tensile stresses alternately act repeatedly as in an earthquake or continuous bridge, The reinforced concrete joints have a lot of problems such as minute distant movements and slips, which can eventually lead to breakage of reinforced concrete structures due to stress concentration and serious accidents.

The object of the present invention is to solve the above problems and to provide a method and apparatus for concentrating stress and damage of a reinforced concrete structure caused by minute slippage or slip of a reinforcing bar at a time of an earthquake or repeated action of compressive and tensile forces, And to provide a perfect and economical reinforcing steel joint that can prevent serious accidents.

1 is an exploded perspective view of a reinforcing bar.

Fig. 2 is an exploded longitudinal sectional view of the reinforcing bar. Fig.

3 is a vertical cross-sectional view of the reinforcing joint of the reinforcing bar joint.

4 is a cross-sectional view of a reinforcing joint of a reinforcing bar joint.

5 is an exploded view of a conventional reinforcing bar screw-in type reinforcing bar joint

Figure 6 is an exploded view of a conventional torque bolt threaded reinforcement

DESCRIPTION OF THE REFERENCE NUMERALS

10: reinforcing plate 30: end of reinforcing bar

10a: upper reinforcing plate 10b: lower reinforcing plate

11: penetration surface such as saw tooth type, mountain type, etc. 12: deformed rebound nodule jaw groove groove

12a: upper node engaging jaw groove 12b: lower node jaw groove groove

15: Reinforced joint plate combined body circumferential surface serrated band

20: Inner circumference truncated conical coupling cone 22: coupling cone inner tooth serrated band

31: Rib of deformed bar 32: Bar of deformed bar

32a: a node on the upper side of the rib 32b: a node on the lower side of the rib

33: Reinforced body part (excluding ribs and joints) 35:

40: Female threaded sleeve of conventional inflatable threaded reinforcement

41: Internal thread of a conventional inflation screw type reinforcement

42: Existing inflated screw threaded reinforcement male part

44: Existing torque bolt-type reinforcement joint

45: Inner circumference of conventional torque bolt type reinforcement

46: Jaw groove of inner circumference of existing torque bolt type reinforcement

The object of the present invention is to solve the above problems by providing fastening grooves 12a and 12b in correspondence with the positions of the upper and lower barbs 32a and 32b of the deformed reinforcing bars which are the upper layers of the upper and lower iron ribs 31, ) Shall be installed as upper and lower asymmetrically, and the width and length shall be precisely matched.

The inner circumferential surfaces other than the engaging shoulder grooves 12a and 12b are formed by a penetration plate 11 formed of a sharp sawtooth or a mountain-like crest or a plurality of sharp protrusions while the reinforcing joint plates 10a and 10b The outer peripheral surface of the coupling body is formed into a truncated conical shape having a gentle slope on the left and right sides thereof, and a coupling conical tube 20 having a truncated conical inner circumferential surface is disposed on the left and right sides of the outer contour, The low-saw-like bands 15 and 22 are formed at the contact surfaces of the left and right joints of the reinforcing joint plates 10a and 10b and the joining cones 20 on the left and right sides, Or by adding a recently developed strong metal cold welding agent or metal repair agent to the inside or the contact portion of the reinforcing steel joint or by filling or filling the steel reinforcing member with the steel reinforcing member after bonding them together And a spacer 35 made of a round steel plate or a reinforcing bar or the like having various thicknesses is inserted in the gap between the ends of the joint reinforcing bars 30 on both sides, (10a, 10b), it is possible to completely prevent skidding and minute distant movement even in the case of repeated action of tensile and compressive force during earthquake or continuous bridge, and to prevent the destruction of the reinforced concrete structure and the serious accident, Reinforcing bars.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings.

Figs. 1 and 2 are an exploded perspective view and an exploded longitudinal sectional view of a reinforcing joint of the present invention. The reinforcing joint plates 10a and 10b are formed as upper and lower members having a substantially semicircular or arcuate cross-section, The positions of the engaging shoulders 12a and 12b are set asymmetrically with respect to the positions of the upper and lower arms 32a and 32b installed asymmetrically with respect to the center of the reinforcing bar 32 ).

3 and 4 are longitudinal and transverse sectional views showing the state of the reinforcing joints of the present reinforcing steel joint. The upper and lower reinforcing joint plates 10a and 10b are separated from each other, The barbs 32b are aligned with the engaging jaw grooves 12b of the lower reinforcing joint plate 10b and the spacing member 35 of the round steel plate or the reinforcing bar having a thickness corresponding to the blank interval between the both- The upper and lower reinforcing joint plates 10a and 10b are integrally formed by pressing the upper and lower reinforcing joint plates 10a and 10b with the fastening groove 12b of the upper reinforcing joint plate 10a fitted to the upper joint barrel 32a.

The left and right sides of the outer circumferential surface of the integrated reinforcing joint plate are machined into a truncated conical shape with a gentle slope having a low sawtooth band 15

In the left and right outer frame portions, an inner circumferential truncated cone-shaped conical barrel 20 having a serrated-shaped band 22 having a serpentine shape is arranged, and when the pressure is transmitted by the hydraulic jack unit or air hammer etc. from the left and right sides to the center, And 32b are strongly inserted into the upper and lower retaining grooves 12a and 12b so that the sharp penetrating plate 11 penetrates into the jointed reinforcing body 33 and is subjected to tensile compression repeated loads such as a continuous bridge or the like It is possible to provide a perfect and economical reinforcing bar joint which can prevent the sliding of the reinforcing bar and the minute distant movement of the reinforcing bar to prevent the destruction of the reinforced concrete structure due to the stress concentration.

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Claims (4)

The positions of the engaging shoulder grooves 12 of the upper and lower reinforcing bars 10a and 10b having substantially semicircular or arcuate cross sections are aligned with the positions of the lower and upper nodes 32a and 32b, The upper and lower reinforcing plates 10a and 10b are formed into a frusto-conical shape having a gentle slope, and the left and right outer peripheral surfaces of the upper and lower reinforcing plates 10a and 10b are formed into a truncated conical shape, And an engaging conical tube (20) formed of a truncated conical hollow sleeve having a gentle inclined inner circumferential surface is disposed on the right outer side portion and is press-fitted and coupled to the left and right sides by a hydraulic jack or air hammer. The method of claim 1, wherein The irregular cut position of the joint reinforcing end and the interval between the joints 32 between the positions of the joint portions 12 and 12b of the reinforcing joint plates 10a and 10b Characterized in that a spacer (35) made of a small round steel plate or a short reinforcing bar of various thicknesses and the interposition of the spacer (35) are provided. The method of claim 1, wherein The low-toothed strips 15 and 22 are formed on the inner circumferential surface of the truncated conical outer circumferential surface of the combined assembly of the upper and lower reinforcing bars 10a and 10b and the inner inclined surface of the outer conical conical tube 20 inserted and adhered thereon, And the reinforcing joint plates (10a, 10b) and the conical cones (20) are not loosened or separated from each other when the reinforcing joints (10a, 10b) The method of claim 1, wherein And the inner circumferential surfaces other than the engaging shoulder grooves 12 are provided with a sharp sawtooth or a gap material 35. The inner circumferential surfaces of the reinforcing end portions 30 and the inner circumferential surfaces of the reinforcing joint plate 10 and the coupling conical tube 20, Wherein a metal cold welding agent or a metal repairing agent having a compressive strength of at least 1600 kg / cm < ² >, which has been recently developed, is applied or mixed with an appropriate amount and then bonded to each other.