JP2006104792A - Cage - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent the locking of vertical and horizontal reinforcements from being put into an imperfect state by vibrations of an earthquake etc., and to prevent the vertical and horizontal reinforcements from being put into a distorted state when the vertical and horizontal reinforcements are locked to one another, in the case of a conventional cage. <P>SOLUTION: In this assembly type cage, at least three circular arc surface-shaped assemblies are formed by vertically and horizontally assembling the linear vertical reinforcements with the arc-shaped horizontal reinforcements; a hook part, which is engaged with the vertical reinforcement at the other end of the adjacent assembly, is formed at one end of the horizontal reinforcement which constitutes each of the assemblies; the assembly is made cylindrical by engaging each of the hook parts with the vertical reinforcement; and after that, a plurality of loop reinforcements are fixed by being arranged on a cylindrical inside. The vertical reinforcements are joined by welding respective points which are intersected with the two horizontal reinforcements arranged to the upper or lower ends of the vertical reinforcements, and locked by binding respective points which are intersected with the other horizontal reinforcements, so that the locking of the vertical and horizontal reinforcements can be prevented from being put into the imperfect state by the vibrations of the earthquake etc., and so that the vertical and horizontal reinforcements can be prevented from being put into the distorted state when the vertical and horizontal reinforcements are locked to one another. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a reinforcing bar rod used as a reinforcing bar in, for example, a concrete column, a bridge column, a cast-in-place pile, or a cylindrical concrete body surrounding a column steel frame.

  As this type of technology, for example, a straight vertical line and an arc-shaped horizontal line are assembled vertically and horizontally, and the intersection is welded by a welded portion to form at least three arc-shaped assemblies, At one end portion of the horizontal stripes constituting the assembly, a hook portion is formed that engages with the vertical stripe at the other end portion of the adjacent assembly, and the hook portion is engaged with the vertical stripe respectively to assemble the assembly. There is a cylindrical reinforcing bar assembly frame in which a plurality of loop bars are disposed and fixed inside a cylindrical shape after being made cylindrical (see Patent Document 1).

  The known technique of this patent document 1 is based on the same applicant, and welds and joins all the intersections of the vertical and horizontal bars.

  In addition, as a method of fixing the vertical and horizontal bars by a method other than welding, for example, a shear reinforcing bar having a closed cross-section by butt welding the ends of the reinforcing bars is passed through the main bar in advance and connected to the base end side of the main bar. After the main bars are positioned by fixing at least one of these shear reinforcement bars along the main bars and fixing them to the unstable position of the main bars, the remaining shear reinforcement bars are set in place. There is an assembling method of reinforcing bars by annular bars that are moved to a position and fixed to the main bars (see Patent Document 2).

  In the known technique of Patent Document 2, a shear reinforcement bar is bent at a factory in advance according to the cross-sectional shape of a reinforced concrete structure such as a column or a beam, and its ends are flash-butt welded, that is, both ends are welded. To make it circular.

  Then, the annular reinforcing bars (lateral bars) are fixed to the four main bars (longitudinal bars) using binding lines, that is, all the intersections of the shear reinforcing bars and the main bars are fixed using binding lines. As can be understood from the configuration in which the annular shear reinforcement is fixed to the four main reinforcements, it is used for a reinforced concrete structure having a relatively small cross-sectional diameter.

Japanese Patent No. 3313145 Japanese Patent Publication No.4-20054

  However, in the known technique of Patent Document 1, since all the intersections of the vertical and horizontal stripes are welded and joined, for example, due to vibration such as an earthquake, a crack or the like is generated in the welded portion of the welded intersection. As a result, there is a problem that the vertical bars and the horizontal bars are not completely locked, and the original function as a reinforcing bar frame is not achieved.

  Moreover, in the well-known technique of the said patent document 2, since it is the structure which fixes all the intersections of a shear reinforcement and a main reinforcement using a binding line, the state of the shear reinforcement and the main reinforcement before fixation by a binding line is the state. It may become unstable and may be fixed in a distorted state, in particular, a reinforcing bar rod used for a reinforced concrete structure having a relatively large cross-sectional diameter, for example, at least as in the known technique of Patent Document 1 In a cylindrical reinforcing bar assembly frame composed of three arcuate plane assemblies, when all the intersections of the vertical and horizontal bars are fixed using binding lines, the positions of the vertical and horizontal bars There is a problem in that the entire assembly may be distorted due to a deviation in the relationship.

  Therefore, in the conventional reinforcing bar rod, it is necessary to prevent the vertical and horizontal bars from being incompletely locked against vibrations such as earthquakes, and to lock the vertical and horizontal bars. There is a problem to be solved by preventing the vertical and horizontal stripes from being distorted.

  As a concrete means for solving the problems of the conventional example described above, the reinforcing bar rod according to the present invention forms at least three arcuate plane assemblies in which straight vertical bars and arc-shaped horizontal bars are assembled vertically and horizontally. In addition, a hook portion that engages with the vertical stripe of the other end portion of the adjacent assembly is formed at one end portion of the horizontal stripe constituting each assembly, and these hook portions are respectively engaged with the vertical stripe. An assembly-type reinforcing bar rod in which a plurality of loop bars are arranged and fixed inside a cylinder after the assembly is cylindrical, and the vertical bars are close to the upper or lower end of the vertical bars. The most important feature is that the respective intersections with the two horizontal bars arranged in the above are welded and joined, and the respective intersections with the other horizontal bars are bound and locked.

  The reinforcing bar rod according to the present invention forms at least three arcuate surface assemblies in which straight vertical bars and arc-shaped horizontal bars are vertically and horizontally assembled, and one end of the horizontal bars constituting each assembly. Forming a hook portion engaging with the vertical bar at the other end of the adjacent assembly, and then engaging the hook bar with the vertical bar to make the assembly cylindrical, and then a plurality of loop bars Is an assembly-type reinforcing bar that is arranged and fixed inside the cylinder, wherein the vertical bars are intersecting points of two horizontal bars arranged near the upper or lower end of the vertical bars. By joining and joining each other crossing point with the other horizontal bars, the vertical bars and the horizontal bars will not be incompletely locked against vibrations such as earthquakes. It is possible to prevent the vertical and horizontal bars from becoming distorted when locking the vertical and horizontal bars. Exhibits an excellent effect that kill.

Next, the present invention will be described in detail based on specific embodiments.
A schematic perspective view of a reinforcing bar rod 1 according to an embodiment of the present invention is shown in FIG. 1, and one of the assemblies 2 a, 2 b, 2 c constituting the reinforcing bar rod 1 is schematically shown. The perspective view shown is shown in FIG. 2, and its plan view is shown in FIG. Since the assemblies 2a, 2b, and 2c have the same configuration, the assembly 2a is representatively described, and the descriptions of the assemblies 2b and 2c are omitted.

  Although this reinforcing bar 1 is shown as an example composed of three assemblies 2a, 2b, 2c, the present application is not limited to three, and may be three, four, five, or six. . Further, the sizes of these assemblies are preferably formed in the same size, for example, the sizes may be slightly different.

  The assembly 2a has a configuration in which a plurality of linear vertical bars 3 are arranged at a predetermined interval, and two vertical bars 3 are arranged near the upper or lower end of the vertical bars 3 (near the lower end in the figure). Arc-shaped horizontal stripes 4a are arranged at a predetermined interval, and the intersections of the two arc-shaped horizontal stripes 4a and the plurality of straight vertical stripes 3 are welded and joined. At this time, the upper side of the vertical bar 3 has a predetermined length on the upper side of the vertical bar 3 so that it can be easily coupled to the lower side of the vertical bar 3 of the next bar 1 stacked on the upper side of the vertical bar 1. It is preferable not to arrange the horizontal stripes 4a inside.

  In this way, by welding the two arcuate horizontal bars 4a and the plurality of straight vertical bars 3 at the respective intersections, the vertical bars 3 are bonded to the two horizontal bars 4a. As a result, twisting or the like does not occur, and the vertical and horizontal stripes 3 and 4a do not become distorted.

  Then, after the intersections of the horizontal bars 4a and the vertical bars 3 are welded and joined, another plurality of arc-shaped horizontal bars 4b are arranged on the vertical bars 3 at predetermined intervals. The intersecting points of the streak 3 and the horizontal streak 4b are bound and locked to form an arcuate-shaped assembly 2a.

  Thus, by binding and locking the intersections of the vertical bars 3 and the horizontal bars 4b, for example, even when a vibration such as an earthquake occurs, the vertical bars 3 and the horizontal bars 4b are not locked. You can prevent it from becoming perfect.

  In order to bind the intersections of the vertical bars 3 and the horizontal bars 4b, for example, a number line may be used. Further, the arc-shaped horizontal stripes 4a and 4b are formed by extending one end and forming a flange portion 5 at the end.

  As shown in FIG. 1, the assembly 2 a formed in this way has adjacent flanges, for example, an assembly 2 a and an assembly 2 b, with the flange 5 at the extreme end of the other end. By hooking and engaging the longitudinal bars 3 that are positioned, the reinforcing bar rod 1 that has a cylindrical shape as a whole can be formed. The flange 5 may be formed only on one end side of the horizontal bars 4a and 4b, but it is also formed on the other end side, and the flange 5 on the other end side is formed on the vertical stripe 3 at the end. It is preferable to form it so as to be wound so that the connection between the vertical stripes 3 and the horizontal stripes 4a and 4b is made stronger.

  In this case, since each assembly 2a, 2b, 2c has a flange 5 formed at one end, the inner side of the vertical bar 3 positioned at the extreme end of the adjacent assembly. The hook 5 and the vertical bar 3 are easily hooked by simply inserting the assembly into the circumferential direction and moving the assembly in the circumferential direction, and the engagement and assembly work can be performed very easily.

  In this case, when the three assemblies 2a, 2b and 2c are heavy as a whole and it is difficult to assemble them into a cylindrical shape, the assembly is turned down and assembled on both sides of the assembly 2b. When the hooks 5 of the three-dimensional bodies 2a and 2c are hooked and the hooks 5 are crushed to connect the assemblies A, B and C, the whole is connected. 2c hangs down and approaches, and can be assembled into a cylindrical shape naturally. When the ends of the assemblies 2a and 2c are connected, the whole is not deformed, so that it has strength.

  Note that the horizontal bars 4a and 4b used for the assemblies 2a, 2b and 2c of the reinforcing bar rod 1 according to the present invention are not limited to those formed in an arc shape in advance, for example, as shown in FIG. Further, after joining the linear transverse bars 4a and 4b to the straight longitudinal bars 3, the linear transverse bars 4a and 4b may be bent in an arc shape.

1 is a perspective view schematically showing a reinforcing bar rod according to an embodiment of the present invention. It is the perspective view which showed schematically one of the assemblies which comprise the same reinforcing bar rod. It is the top view which showed schematically the assembly which comprises the same reinforcing steel bar. It is the top view which showed schematically the case where the assembly which comprises the same reinforcing steel rod is formed using the linear transverse bar.

Explanation of symbols

1 rebar bar 2a, 2b, 2c assembly 3 vertical bar 4a, 4b horizontal bar 5 buttock

Claims (1)

At least three arcuate surface assemblies are formed by assembling straight vertical bars and arc-shaped horizontal bars vertically and horizontally, and at one end of the horizontal bars constituting each assembly, an adjacent assembly After forming hooks that engage with the vertical bars at the other end, and engaging the hooks with the vertical bars to make the assembly cylindrical, a plurality of loop bars are arranged inside the cylinder. It is an assembly-type reinforcing bar that is fixed
The vertical bars are joined by joining the intersections of two horizontal bars arranged near the end of the upper or lower part of the vertical bars, and binding and locking the intersections of the other horizontal bars. Reinforced steel rod characterized by doing.

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