JP2010150782A - Installation structure of steel column - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an installation structure of a steel column, which can prevent an increase in a construction period and a construction cost by reducing time and labor required for the operation of connecting a main reinforcement to an intermediary connecting member. <P>SOLUTION: This installation structure 30 of the steel column includes: the steel column 4 which is embedded in beam concrete 6; and the intermediary connecting member 8 which is separately arranged to surround the steel column 4 and to which the main reinforcement 12 of the beam concrete 6 is connected. The installation structure 30 is characterized in that an end surface of an external thread-like member 23 or an internal thread-like member is joined to a vertical plane of an outer peripheral portion of the intermediary connecting member 8. The increase of the construction period and the construction cost can be prevented by reducing the time and the labor required for the operation of connecting the main reinforcement to the intermediary connecting member in the installation structure of the steel column. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an installation structure of a steel column including a steel column embedded in beam concrete and an intermediate connection member that is arranged so as to surround the steel column and is connected to a main reinforcing bar of beam concrete. Is.

  An example of a conventional steel column installation structure is shown in FIG. In the conventional steel column installation structure 2 shown in FIG. 9, the lower end portion 4 a of the steel column 4 is embedded in beam concrete used as the grout material 24, and is separated from the steel column 4 to be separated from the grout material 24. A cylindrical member 22 is disposed so as to surround the intermediate member, and an opening 8 a of the square frame-shaped intermediate coupling member 8 is fixed to the outer peripheral surface of the cylindrical member 22.

  The male threaded end 12a of the main rebar 12 of the beam concrete 6 is connected to a female screw hole 8b formed in the intermediate connecting member 8 so that its axis is in the horizontal direction. In FIG. 9, the code | symbol 13 shows a stirrup, and the code | symbol 14 has shown discarded concrete.

  However, in the conventional steel column installation structure 2, when the male threaded end 12 a of the main rebar 12 is screwed into the female screw hole 8 b provided in the intermediate connecting member 8, the main reinforcing bar is inserted into the intermediate connecting member 8. 12 are connected. For this reason, since the long and heavy main rebar 12 must be held and rotated, it is not easy to connect the main rebar 12 to the intermediate connecting member 8. As a result, there is a problem that the time and labor required for the connection work increase, leading to an increase in work period and work cost.

  Therefore, in view of the above problems, the present invention provides a steel column installation structure that can reduce the time and labor required for connecting the main reinforcing bar to the intermediate connecting member and prevent the construction period and cost from increasing. The issue is to provide.

In order to solve the above problems, the present invention
A steel column installation structure comprising a steel column embedded in beam concrete, and an intermediate connection member that is arranged so as to surround the steel column and is connected to a main reinforcing bar of beam concrete,
An end face of a male screw-like member or a female screw-like member is joined to the vertical surface of the outer peripheral portion of the mediation connecting member.

In addition, the installation structure of the steel column is
The male screw-like member is connected to a male screw-like end portion of the main reinforcing bar through a female screw-like member.

In addition, the installation structure of the steel column is
The female screw-like member is connected to a male screw-like end portion of the main reinforcing bar through a male screw-like member and a female screw-like member.

In order to solve the above problems, the present invention
A steel column installation structure comprising a steel column embedded in beam concrete, and an intermediate connection member that is arranged so as to surround the steel column and is connected to a main reinforcing bar of beam concrete,
A female screw-like hole formed in the vertical surface of the outer peripheral portion of the mediating connecting member is connected to the male screw-like end of the main reinforcing bar via the male screw-like member and the female screw-like member.

In addition, the installation structure of the steel column is
The male screw-like portion of the male screw-like member and the male screw-like end portion of the main reinforcing bar are in a reverse screw-like relationship.

According to such an installation structure of the steel column of the present invention,
A steel column installation structure comprising a steel column embedded in beam concrete, and an intermediate connection member that is arranged so as to surround the steel column and is connected to a main reinforcing bar of beam concrete,
By joining the end face of the male screw-like member or female screw-like member to the outer peripheral portion vertical surface of the mediation connecting member,
It is possible to reduce the time and labor required for connecting the main reinforcing bar to the intermediate connecting member, and to prevent the construction period and cost from increasing.

Moreover, according to the steel column installation structure of the present invention,
A steel column installation structure comprising a steel column embedded in beam concrete, and an intermediate connection member that is arranged so as to surround the steel column and is connected to a main reinforcing bar of beam concrete,
By connecting the female threaded hole formed in the outer peripheral vertical surface of the mediation coupling member to the male threaded end of the main rebar through the male threaded member and the female threaded member,
It is possible to reduce the time and labor required for connecting the main reinforcing bar to the intermediate connecting member, and to prevent the construction period and cost from increasing.

Moreover, according to the steel column installation structure of the present invention,
The male screw-like part of the male screw-like member and the male screw-like end of the main reinforcing bar are in a reverse screw-like relationship,
The male screw-like member and the main reinforcing bar receive a force that is pulled so as to approach each other, so that the two members can be firmly tensioned and connected without sagging.

Hereinafter, the best mode for carrying out the steel column installation structure according to the present invention will be specifically described with reference to the drawings.
FIGS. 1 to 3 are views referred to for explaining a steel column installation structure 20 according to the first embodiment of the present invention. In the present embodiment, the same parts as those in the conventional steel column installation structure will be described using the same reference numerals, and redundant description of the same configuration as the conventional one will be omitted as much as possible.

  As shown in FIG. 1, the steel column installation structure 20 according to the present embodiment is in the foundation beam concrete in which the lower end portion 4 a of the steel column 4 erected on the discarded concrete 14 is used as the grout material 24. The cylindrical member 22 is disposed so as to be embedded and spaced from the steel column 4 to the outside so as to surround the steel column 4 via the grout material 24.

  And the opening part 8a of the mediation connection member 8 as shown in FIG. 2 is fixed to two positions in the middle of the outer peripheral surface of the cylindrical member 22 in the height direction. As shown in FIG. 3, it has a structure in which the male threaded ends 12a of the main reinforcing bars 12 of the foundation beam concrete 6 are connected.

  As shown in FIG. 2, the intermediate connecting member 8 has an opening 8 a that is fixed to the outer peripheral surface of the cylindrical member 22 while the end portions of each side continuously form a corner portion. It is formed in a square frame shape. On each of the two perpendicular surfaces (see FIG. 1) of the outer peripheral portion of the intermediate connecting member 8 facing each other, the shaft is horizontal, and male threads (male-like portions) are formed on the outer peripheral portion by machining. As shown in FIG. 2, six screw rod members 23 (male-like members) are provided at intervals in the length direction of two sides facing each other.

  The end face of the screw rod member 23 and the intermediate surface are joined by a so-called stud welding means which is melted and joined to each other by an arc generated between the end surface of the screw rod member 23 and the outer peripheral vertical surface of the intermediate connecting member 8. The outer peripheral part vertical surface of the connection member 8 is joined.

  It should be noted that the positions where the screw rod members 23 are provided are not limited to the two opposite sides of the square frame-shaped intermediary connecting member 8, and it goes without saying that the number of screw rod members 23 is not limited to six. . In other words, depending on where the steel pillar 4 according to the present embodiment is set on the horizontal surface of the building site, screw rod members are provided on each of two adjacent sides, three sides, or four sides of the intermediate connecting member 8. 23 can be provided.

  As shown in FIG. 3, the distal end side (right end side in the drawing) of the screw rod member 23 provided by joining the base end side (left end side in the drawing) to the outer peripheral portion vertical surface of the intermediate coupling member 8 is It is connected to the male threaded end 12a of the main reinforcing bar 12 via a coupler 25 (female threaded member). At this time, the screw rod member 23 provided on the intermediate connecting member 8 and the male screw-like end portion 12a of the main reinforcing bar 12 have a reverse screw-like relationship in which the inclination of the screw spiral direction is opposite to each other.

  In connection with this, the female threaded female screw formed along the axis of the half length portion on one end side of the coupler 25 and the axis of the half length portion on the other end side were formed. There is also a reverse screw-like relationship in which the inclination of the screw in the spiral direction is opposite to that of the female screw in the female screw hole.

  Accordingly, the intermediate connecting member 8 and the main reinforcing bar 12 can be easily connected by simply rotating the coupler 25 without rotating the long and heavy main reinforcing bar 12 by hand. At this time, the screw rod member 23 and the main rebar 12 receive a force that is pulled so as to be close to each other, and can be tightly connected to each other without sagging.

  According to the steel column installation structure 20 according to the first embodiment as described above, the intermediate connecting member can be easily obtained by simply rotating the coupler 25 without having to rotate the long and heavy main rebar 10 by hand. Since the main rebar 12 can be connected to 8, the time and labor required for connecting the main rebar 12 to the intermediate connecting member 8 can be reduced, and the construction period and cost can be prevented from increasing.

  Further, the joining of the screw rod member 23 to the mediation connecting member 8 is such that the end face of the screw rod member 23 is joined to the vertical surface of each side of the mediation connecting member 8 by stud welding. The work of attaching the screw rod member 23 to 8 can be facilitated.

  FIGS. 4 to 6 are views referred to for explaining the steel column installation structure 30 according to the second embodiment of the present invention. In the present embodiment, the same parts as those in the steel column installation structure according to the first embodiment will be described using the same reference numerals, and the same configurations as those in the first embodiment will be duplicated. The description will be omitted as much as possible.

  In the first embodiment, the end face of the screw rod member 23 (male-like member) is provided on the outer peripheral vertical surfaces of the two sides of the square frame-shaped intermediate connecting member 8, but this second embodiment In the form, as shown in FIGS. 4 and 5, the shaft is horizontal and has a female screw hole 10 a (female screw hole) along the axis on the vertical surface of the outer peripheral portion of the two sides of the square frame-shaped intermediate connecting member 8. As shown in FIG. 5, six couplers 10 (female thread-like members) are provided at intervals in the length direction of two opposite sides.

  And the end surface of the coupler 10 is joined to the outer peripheral part vertical surface of the intermediate | middle connection member 8 using what is called a press-contact process means. The pressure welding processing means means processing means for joining by melting and pressure-bonding portions that are in contact with each other by frictional heat generated by rotating the coupler 10 around an axis at high speed and pressing the coupler 10 against each side of the intermediate connecting member 8. .

  Needless to say, the position where the coupler 10 is provided is not limited to the two opposite sides of the square frame-shaped intermediate connecting member 8, and the number of couplers 10 is not limited to six. That is, the coupler 10 is provided on each of two adjacent sides, three sides, or four sides of the intermediary connecting member 8 depending on where the steel pillar 4 according to the present embodiment stands on the horizontal surface of the building site. Can be provided.

  As shown in FIG. 6, the female screw hole 10 a of the coupler 10 provided in the intermediate connecting member 8 has a half length portion of one end side of a screw rod member 32 (male-like member) that is much shorter than the main reinforcing bar 12. A male screw (male-like portion) is screwed in, and a male screw of about half length on the other end side of the threaded rod member 32 is made longer than the coupler 10 and a female screw of about half length on one end side of the coupler 25. The male screw end 12a of the main rebar 12 is screwed to the female screw of the female screw hole of the half length of the other end side of the coupler 25.

  In connection with this, between the internal thread of the female screw hole of the half length portion on one end side of the coupler 25 and the internal thread of the internal thread hole of the other half length portion of the coupler 25 is also in the helical direction of the screw. It has a reverse screw-like relationship with the reverse inclination.

  Therefore, the intermediate connecting member 8 and the main reinforcing bar 12 can be easily connected only by rotating the coupler 25 without rotating the long and heavy main reinforcing bar 10 by hand. At this time, the screw rod member 32 and the main reinforcing bar 12 receive a force that is pulled so as to approach each other, so that the two members can be firmly tensioned and connected without sagging.

  According to the steel column installation structure 30 according to the second embodiment as described above, the intermediate coupling can be easily performed by simply rotating the coupler 25 without rotating the long and heavy main reinforcing bar 10 by hand. Since the main reinforcing bar 12 can be connected to the member 8, the time and labor required for connecting the main reinforcing bar 12 to the intermediate connecting member 8 can be reduced, and the construction period and cost can be prevented from increasing.

  In addition, the coupler 10 is joined to the mediation connecting member 8 because the end face of the coupler 10 is joined to the vertical surface of each side of the mediation connecting member 8 by using pressure welding processing means. Since the intermediate connecting member 8 does not need to be perforated by machine cutting to cut the internal thread as in the installation structure 2, the attachment work of the coupler 10 to the intermediate connecting member 8 can be facilitated.

  7 and 8 are views referred to for describing a steel column installation structure 40 according to the third embodiment of the present invention. In the second embodiment, the end face of the coupler 10 is joined to the vertical surface of the outer peripheral portion of the frame-shaped mediating connecting member 8, whereas in the third embodiment, the frame-shaped mediating connecting member 8 is frame-shaped mediating. A female screw hole 8b (female screw hole) whose axis is in the horizontal direction is formed in the horizontal thickness of the connecting member 8 itself.

  Then, as shown in FIG. 8, in the female screw hole 8b of the intermediate connecting member 8, a base end side (in the drawing) of a screw rod member 32 (male screw member) having a male screw (male screw portion) formed on the outer peripheral portion. The left end) is screwed and connected. And the length part which protruded to the front end side (right side in the figure) of this threaded rod member 32 is connected with the male threaded end 12a of the main rebar 12 through the coupler 25.

  In the third embodiment, the case where the female screw hole 8b has penetrated the entire thickness in the horizontal direction of the mediation connecting member 8 has been described. The female screw hole 8a may be formed so as to be a dead end in the middle of the thickness of the mediation connecting member 8 without penetrating.

  According to the steel column installation structure 40 according to the third embodiment as described above, the time and labor required for connecting the main reinforcing bar 12 to the intermediate connecting member 8 can be reduced, as in the above embodiment. Further, it is possible to prevent an increase in work period and work cost, and to reduce parts such as the screw rod member 23 and the coupler 10 used in the first and second embodiments.

  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.However, 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.

  Moreover, in the said embodiment, although the male screw-shaped edge part 12a of the main rebar 12 and the male screw of the screw rod members 23 and 32 were explained about the machine screw formed by the machining process, You may use the threaded reinforcing bar (male-like member) in which the male thread-like part was formed in the spiral shape along the length direction, and the male thread-like part is forging, cutting, etc. along the spiral. It may be formed by a manufacturing method other than the above.

  Moreover, in the said embodiment, although the internal thread of coupler 10 and 25 demonstrated the mechanical thread formed by the machine cutting process, the internal thread part which can be screw-coupled to the external thread form part of the said threaded reinforcing bar has been demonstrated. The formed coupler (female threaded member) may be used, and the female threaded part may be formed by a manufacturing method other than cutting, similar to the male threaded part.

  In the above embodiment, the end face of the screw rod member 23 is joined to the vertical surface of the outer peripheral portion of the intermediate connecting member 8 by the stud welding means, and the end face of the coupler 10 is joined using the pressure friction heat. Although each member is joined by a preferred joining means, a joining means other than such stud welding means or pressure welding means may be used for each member. .

It is a cross-sectional side view which shows the installation structure 20 of the steel column which concerns on the 1st Embodiment of this invention. It is a top view of the mediation connection member 8 and the screw rod member 23 shown in FIG. 3 is a partially enlarged plan view showing a state in which a male threaded end portion 12a of a main reinforcing bar 12 is connected to one of screw rod members 23 shown in FIGS. It is a cross-sectional side view which shows the installation structure 30 of the steel column which concerns on the 2nd Embodiment of this invention. It is a top view of the mediation connection member 8 and the coupler 10 shown in FIG. 6 is a partially enlarged plan view showing a state in which a male threaded end 12a of a main reinforcing bar 12 is connected to one of the couplers 10 shown in FIGS. It is a cross-sectional side view which shows the installation structure 40 of the steel column which concerns on the 3rd Embodiment of this invention. FIG. 8 is a partially enlarged plan view showing a state in which the male threaded end portion 12 a of the main reinforcing bar 12 is coupled to one of the female screw holes 8 b of the mediation coupling member 8 shown in FIG. 7 via a screw rod member 32 and a coupler 25. It is a cross-sectional side view which shows the installation structure 2 of the conventional steel frame.

Explanation of symbols

2 Steel column installation structure 4 Steel column 4a Lower end 6 Foundation beam concrete 8 Intermediary connecting member 8a Opening 8b Female threaded hole 10 Coupler 10a Female threaded hole 12 Main rebar 12a Male threaded end 13 Stirrup 14 Abandoned concrete 20 Installation of steel pillar Structure 22 Tubular member 23 Screw rod member 24 Grout material 25 Coupler 30 Steel column installation structure 32 Screw rod member 40 Steel column installation structure

Claims (5)

A steel column installation structure comprising a steel column embedded in beam concrete, and an intermediate connection member that is arranged so as to surround the steel column and is connected to a main reinforcing bar of beam concrete,
An installation structure of a steel column, wherein an end face of a male screw-like member or a female screw-like member is joined to an outer peripheral vertical surface of the mediation connecting member.   2. The steel column installation structure according to claim 1, wherein the male screw-like member is connected to a male screw-like end portion of the main reinforcing bar via a female screw-like member.   2. The steel column installation structure according to claim 1, wherein the female threaded member is connected to a male threaded end of the main reinforcing bar via a male threaded member and a female threaded member. A steel column installation structure comprising a steel column embedded in beam concrete, and an intermediate connection member that is arranged so as to surround the steel column and is connected to a main reinforcing bar of beam concrete,
Installation of a steel column characterized in that a female threaded hole formed in the outer peripheral vertical surface of the intermediate coupling member is coupled to a male threaded end of the main reinforcing bar via a male threaded member and a female threaded member Construction.   The steel column installation structure according to claim 3 or 4, wherein a male screw-like portion of the male screw-like member and a male screw-like end portion of the main reinforcing bar have a reverse screw-like relationship.

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