JP5340715B2 - Connection structure of steel column and beam concrete main reinforcement - Google Patents

Description

  The present invention provides, for example, a steel column and beam concrete in which a lower end portion of a steel column embedded in foundation beam concrete in a building structure is connected to a main reinforcing bar in the foundation beam concrete via an intermediate connecting member. This relates to the connection structure of main reinforcing bars.

  As disclosed in Patent Document 1, as a conventional technique, a steel column in which a lower end portion of a steel column embedded in the foundation beam concrete is coupled to a main reinforcing bar in the foundation beam concrete via an intermediate coupling member. And there was a connection structure of beam concrete main reinforcement. This conventional steel column and main reinforcing bar connection structure is, for example, a plate-like intermediate connecting member having an opening in the center of its planar shape, welded to the lower end of the steel column that fits into the opening. The male screw portion at the end of the main reinforcing bar is screwed into the female screw hole that is fixed integrally and opens on the outer peripheral side surface (vertical surface) of the intermediate connecting member.

In addition, in the above-mentioned Patent Document 1, instead of forming a female screw hole opened on the outer peripheral side as described above as an intermediate connecting member, as shown in FIG. On the upper surface, there is disclosed a structure in which a reinforcing bar fixture 28 into which a male thread portion at an end of a main reinforcing bar is screwed is integrally provided.
Japanese Patent No. 4033340

  However, the above-described conventional steel column and main reinforcing bar connection structure has an end portion of the main reinforcing bar connected to the female screw hole or the reinforcing bar fixture provided in the intermediate connecting member during the operation of connecting the main reinforcing bar to the intermediate connecting member. The male screw part is to be screwed in. For this reason, even if only the end part of the main reinforcing bar is connected, the main reinforcing bar must be rotated around its axis over the entire length in such connection work. There was a problem that labor was required.

  Then, this invention makes it a subject to provide the connection structure of the steel column and beam concrete main reinforcement which can make the attachment operation | work of the main reinforcement to a mediation connection member easy in view of the said problem. .

In order to solve the above problems, the present invention
A steel column that is embedded in the beam concrete and a main reinforcing bar that is arranged in the beam concrete are connected via an intermediate connecting member, and the connecting structure of the steel column and the beam concrete main reinforcing bar,
A plurality of male screw-like members are joined to each of the upper surface and the lower surface of the peripheral edge of the mediation connecting member so that a part of the length in the axial direction protrudes outward in the horizontal direction of the outer periphery of the mediation connecting member,
The male screw part of the male screw member has a reverse screw-like relationship with the male screw end of the main reinforcing bar,
The female screw member has a first female screw portion corresponding to the male screw portion of the male screw member formed on one side in the axial direction, and a first female screw portion corresponding to the male screw end portion of the main reinforcing bar on the other axial direction. 2 female thread parts are formed,
It said male screw member is characterized in being connected to the male screw-shaped end portion of the main reinforcing bars via the internal thread member.

Further, in the connecting structure of the steel column and the beam concrete main reinforcing bar according to the present invention, each of the plurality of male members joined on the upper surface of the peripheral portion of the intermediate connecting member is joined on the lower surface of the peripheral portion. It arrange | positions so that it may overlap over each of several male screw-shaped members, It is characterized by the above-mentioned.

Moreover, the connection structure of the steel column and the beam concrete main reinforcing bar of the present invention is characterized in that the intermediary connection member is plate-shaped and arranged horizontally .

  Moreover, the connection structure of the steel column and the beam concrete main reinforcing bar of the present invention is characterized in that the steel column is fitted in a through hole formed in a central portion of the intermediate connection member.

  Moreover, the connection structure of the steel column of this invention and a beam concrete main reinforcement is arrange | positioned so that the said mediation connection member may be pinched | interposed, and the said steel column is divided | segmented to the up-down direction, It is characterized by the above-mentioned.

According to such a connection structure of the steel column and the beam concrete main reinforcing bar of the present invention,
A steel column that is embedded in the beam concrete and a main reinforcing bar that is arranged in the beam concrete are connected via an intermediate connecting member, and the connecting structure of the steel column and the beam concrete main reinforcing bar,
On the upper surface and / or the lower surface of the peripheral edge portion of the mediation connecting member, the male screw-like member is joined so that a part of its axial length protrudes outward in the horizontal direction on the outer periphery of the mediation connecting member,
The male screw-like member is connected to the male screw-like end portion of the main reinforcing bar via a female screw member,
When attaching the main rebar to the mediation connecting member, it is only necessary to rotate the female threaded member without having to rotate the main rebar about the entire axis. Installation work can be facilitated.

Moreover, according to the connection structure of the steel column of the present invention and the beam concrete main reinforcement,
The mediating connecting member is plate-shaped and arranged horizontally,
Since a plurality of intermediary connecting members can be installed in multiple stages, the number of main reinforcing bars connected to the lower end of the steel column can be increased.

Moreover, according to the connection structure of the steel column of the present invention and the beam concrete main reinforcement,
The male screw-like portion of the male screw-like member and the male screw-like portion of the main reinforcing bar are in a reverse screw-like relationship,
Even if the main rebar having a long length is not rotated by hand, it can be easily connected only by rotating the female threaded member. At this time, the male screw-like member and the main reinforcing bar receive a force pulled so as to approach each other, and can be firmly tensioned and connected without sagging.

EMBODIMENT OF THE INVENTION Hereinafter, the form for implementing the connection structure of the steel column and beam concrete main reinforcement which concerns on this invention is demonstrated concretely based on drawing.
FIG.1 and FIG.2 is a figure referred in order to demonstrate the connection structure 2 of the steel column and foundation beam concrete main reinforcement which concerns on the 1st Embodiment of this invention.

  As shown in FIG. 1 and FIG. 2, the connecting structure 2 of the steel column and the basic beam concrete main reinforcing bar according to the present embodiment is provided at two lower and upper portions of the lower end portion 11 </ b> A of the steel column 11 in the basic beam concrete 14. A plate-like intermediate connecting member 8 is provided. That is, the intermediate connecting member 8 is formed with an opening 8a at or near the center thereof, and the steel column 11 is fitted into the opening 8a, and the intermediate connecting member 8 and the steel column 11 are spaced from each other. It is fixed by welding.

  As shown in FIG. 2, the intermediate connecting member 8 has a planar outer peripheral shape formed in a substantially square shape. As shown in FIGS. 1 and 2, the mediation connecting member 8 extends along each of two sides (a right side and a lower side in FIG. 2) adjacent to each other and forming a right angle on the outer periphery of the planar shape. Six screw rod members 20 (male thread-like members) are respectively provided on the upper surface and the lower surface of the peripheral edge so that a part of the length in the axial direction protrudes outward in the horizontal direction from the outer periphery of the intermediate connection member 8. Are joined by welding.

  Each screw rod member 20 of the mediation connecting member 8 has a male screw formed in advance on its outer peripheral portion by machining. Each of the threaded rod members 20 includes a male threaded end portion 22a formed by machining in advance at each distal end portion of the main reinforcing bar 22 disposed on the coaxial line corresponding to each other, and a coupler 24 (a female threaded member). ).

  That is, a female thread that penetrates in the axial direction of the coupler 24 is formed by machining, and the threaded rod member 20 of the intermediate connecting member 8 and the male threaded end portion 22a of the main reinforcing bar 22 are formed at both ends of the coupler 24, respectively. As a result, the threaded rod member 20 of the intermediate coupling member 8 and the male threaded end 22a of the main rebar 22 are coupled to each other.

  Further, the screw rod member 20 of the mediation connecting member 8 and the male threaded end portion 22a of the main reinforcing bar 22 are reversely threaded to each other, and the mediation connecting member is disposed on the inner side of one half of the length of the coupler 24. The female threads formed corresponding to the eight threaded rod members 20 and the female threads formed corresponding to the male threaded end 22a of the main reinforcing bar 22 inside the other half of the other length are also opposite to each other. It is a screw.

  Therefore, even if the main rebar 22 having a long length is not held and rotated by hand, it can be easily connected only by rotating the coupler 24. At this time, the threaded rod member 20 and the main reinforcing bar 22 receive a force pulled so as to approach each other, and can be tightly connected without being slackened.

  According to the connecting structure 2 of the steel column and the foundation beam concrete main reinforcing bar according to the first embodiment, the length of the main reinforcing bar 22 is set when the main reinforcing bar 22 is attached to the intermediate connecting member 8. Since it is only necessary to rotate the coupler 24 without rotating around the entire axis, the operation of attaching the main reinforcing bar 22 to the intermediate connection member 8 can be facilitated.

  On the other hand, according to the connection structure 2 of the steel column and the basic beam concrete main reinforcing bar according to the present embodiment, each of the intermediate connection members 8 is formed in a plate shape and is disposed horizontally, which is not illustrated. If necessary, the number of intermediate connection members 8 can be increased and a plurality of them can be installed in multiple stages, so that the number of main reinforcing bars 22 connected to the lower end of the steel column 11 can be increased.

  Next, FIG. 3 is a figure referred in order to demonstrate the connection structure 30 of the steel column and foundation beam concrete main reinforcement which concerns on the 2nd Embodiment of this invention. Since the present embodiment is basically in common with the first embodiment, the same reference numerals are used for the same parts as the connection structure 2 of the steel column and the basic beam concrete main reinforcement according to the first embodiment. The description of the same configuration will be omitted as much as possible.

  In the connection structure 2 of the steel column and the basic beam concrete main reinforcing bar according to the first embodiment, the opening 8a is formed in the intermediate connection member 8, but the steel column and the basic concrete according to the present embodiment are formed. In the connection structure 30 of the main reinforcing bar, as shown in FIG. 3, the opening 8 a is not formed in the intermediate connection member 8.

  Further, in the connection structure 30 of the steel column and the foundation beam concrete main reinforcing bar according to the present embodiment, the lower end portion 11A of the steel column 11 is divided vertically into the upper portion 11b and the lower portion 11c, and the upper side The intermediate connecting member 8 is sandwiched between the upper portion 11b and the lower portion 11c, and the upper portion 11b and the lower portion 11c of the lower end portion 11A of the steel column 11 and the intermediate connecting member 8 are integrally fixed by welding. Moreover, the lower intermediate | middle connection member 8 is also integrally fixed to the lower end surface of the lower part 11c of the lower end part 11 of the steel column 4 by welding.

  Each of the intermediary connecting members 8 has six screw rod members 20 (male-like members) on the upper surface and the lower surface of the peripheral portion thereof, and a part of the length in the axial direction thereof is an intermediary connecting member. It is joined by welding so as to protrude outward in the horizontal direction from the outer periphery of 8. As in the first embodiment, the threaded rod member 20 is connected to the male threaded end portion 22 a of the main reinforcing bar 22 via a coupler 24.

  According to the connection structure 30 of the steel column and the foundation beam concrete main reinforcing bar according to the second embodiment as described above, the operation of attaching the main reinforcing bar 22 to the intermediate connection member 8 as in the first embodiment. In this case, it is only necessary to rotate the coupler 24 without having to rotate the main rebar 22 around its entire length over the entire length thereof, so that the work of attaching the main rebar 22 to the intermediate connecting member 8 is facilitated. Can do.

  On the other hand, also by the connection structure 30 of the steel column and the foundation beam concrete main reinforcing bar according to the present embodiment, each of the intermediate connection members 8 is formed in a plate shape as in the first embodiment. Since it is arranged horizontally, although not shown in the figure, the number of intermediate connection members 8 can be increased as necessary, and a plurality of them can be installed in multiple stages, so that the main reinforcing bar 22 connected to the lower end of the steel column 11 can be The number can be increased.

  In the connection structures 2 and 30 of the steel column and the basic beam concrete main reinforcing bars according to the first and second embodiments, the male threaded end 22a of the main reinforcing bar 22 and the male screw of the screw rod member 20 are provided. The case where it is formed by machining has been described, but it is also possible to use a threaded rebar (male-like member) in which a male thread-like portion is spirally formed along the length direction at the time of manufacturing the main rebar, The male threaded portion may be formed by a manufacturing method other than machining such as forging or drawing along a spiral.

  Moreover, in the connection structure 2 and 30 of the steel column and the foundation beam concrete main reinforcing bar which concern on the said 1st and 2nd embodiment, although the internal thread of the coupler 24 demonstrated the case where it was formed by machining, A coupler (female screw member) in which a female screw part that can be screw-coupled to the male screw part of the threaded reinforcing bar may be used, and the female screw part is similar to the male screw part in the machine. It may be formed by a manufacturing method other than processing.

  Further, in the connection structures 2 and 30 of the steel column and the basic beam concrete main reinforcing bar according to the first and second embodiments, a plurality of intermediate connection members 8 are provided on the upper surface and the lower surface of the peripheral portion, respectively. However, the screw rod member 20 may be joined to only one of the upper surface and the lower surface.

  Further, in the connection structures 2 and 30 of the steel column and the foundation beam concrete main reinforcing bar according to the first and second embodiments, two intermediate connection members 8 are provided, and the two intermediate connection members 8 are arranged vertically. Although arranged in a step, only one intermediary connecting member 8 may be provided. Alternatively, three or more intermediary connection members 8 may be provided, and these may be arranged in a multistage manner.

  Moreover, in the connection structure 2 and 30 of the steel column and the foundation beam concrete main reinforcement which concern on the said 1st and 2nd embodiment, the intermediate | middle connection member 8 is formed in the substantially square shape of the outer periphery of the planar shape. However, the planar shape of the intermediate connection member 8 is not limited to such a shape. Moreover, although the mediation connecting member 8 has a plate shape, it may have a shape other than the plate shape.

  Moreover, in the connection structure 2 and 30 of the steel column and foundation beam concrete main reinforcement which concern on the said 1st and 2nd embodiment, as shown in FIG. 2, the intermediate | middle connection member 8 is the outer periphery of the planar shape. Although the case where the screw rod member 20 is provided in the peripheral portion along each of two sides (right side and lower side in FIG. 2) that are adjacent to each other at right angles has been described, The intermediate connecting member 8 may be provided at the peripheral edge along any one of the four sides of the four sides.

  Further, in the above embodiment, the case where the present invention is applied to the main reinforcing bar of the foundation beam concrete has been described, but the present invention is not necessarily limited to the application to the main reinforcing bar of the foundation beam concrete. For example, the present invention can also be applied to the main rebar of beam concrete on the ceiling side of the first floor and the main rebar of beam concrete on the upper floor.

It is a partial cross section side view which shows the connection structure 2 of the steel frame pillar and foundation beam concrete main reinforcement which concerns on the 1st Embodiment of this invention. It is a partial cross section top view of the intermediate | middle connection member 8 etc. of the connection structure 2 of the steel-column and main beam concrete main reinforcement shown in FIG. It is a partial cross section side view which shows the connection structure 30 of the steel frame pillar and foundation beam concrete main reinforcement which concerns on the 2nd Embodiment of this invention.

Explanation of symbols

2 Connection structure of steel column and foundation beam concrete main reinforcement 8 Intermediary connection member 8a Opening 11 Steel column 11A Lower end 11b Upper part 11c Lower part 14 Basic beam concrete 20 Screw rod member 22 Main reinforcement 22a Male thread end 24 Coupler 30 Steel column and Foundation beam concrete main reinforcement connection structure

Claims (5)

A steel column that is embedded in the beam concrete and a main reinforcing bar that is arranged in the beam concrete are connected via an intermediate connecting member, and the connecting structure of the steel column and the beam concrete main reinforcing bar,
A plurality of male screw-like members are joined to each of the upper surface and the lower surface of the peripheral edge of the mediation connecting member so that a part of the length in the axial direction protrudes outward in the horizontal direction of the outer periphery of the mediation connecting member,
The male screw part of the male screw member has a reverse screw-like relationship with the male screw end of the main reinforcing bar,
The female screw member has a first female screw portion corresponding to the male screw portion of the male screw member formed on one side in the axial direction, and a first female screw portion corresponding to the male screw end portion of the main reinforcing bar on the other axial direction. 2 female thread parts are formed,
It said male screw member, the coupling structure of the steel column and beam concrete main reinforcing bar characterized in that it is connected to the male screw-shaped end portion of the main reinforcing bars via the internal thread member. Each of the plurality of male screw-like members joined on the upper surface of the peripheral edge portion of the mediation connecting member is disposed so as to overlap above each of the plurality of male screw-like members joined on the lower surface of the peripheral edge portion. The connection structure of a steel column and a beam concrete main reinforcing bar according to claim 1. The said intermediate | middle connection member is plate shape, and is arrange | positioned horizontally, The connection structure of the steel column and beam concrete main reinforcement of Claim 1 or 2 characterized by the above-mentioned. The steel column and the beam concrete main reinforcing bar connection structure according to any one of claims 1 to 3, wherein a steel column is fitted in a through-hole formed in a central portion of the mediation connecting member. The connection structure of the steel column and the beam concrete main reinforcing bar according to any one of claims 1 to 3, wherein the steel column is arranged so as to sandwich the intermediate connection member and the steel column is divided in a vertical direction.

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