JP5971791B2 - Connection structure of steel column and main reinforcement - Google Patents

Description

  In the present invention, for example, the lower end of a steel column is embedded in basic concrete in a building structure, and the lower end of the embedded steel column is connected to the main reinforcing bar in the basic concrete. It relates to a connecting structure.

  FIG. 10 to FIG. 12 are diagrams which are referred to for explaining a conventional steel column and main reinforcing bar connection structure 2.

  In the conventional connecting structure 2 of the steel column and the main reinforcing bar, as shown in FIGS. 10 and 11, the lower end portion 4A of the rectangular steel column 4 is embedded in the foundation concrete 6 in the building structure. The steel column 4 thus connected was connected to the main reinforcing bars 8 and 10 in the foundation concrete 6 via nuts 14 (prevention means).

  As shown in FIG. 11, the steel column 4 has peripheral walls 4a, 4b, 4c, and 4d that respectively constitute four sides of a substantially square shape in a horizontal cross section perpendicular to the length direction (the vertical direction in the drawing). It was.

  The lower end portion 4A of the steel column 4 has a plurality of through holes 12a, which communicate with each other at positions facing each other on the surfaces facing each other of the peripheral walls 4a, 4b, 4c, 4d of the steel column 4. 12b, 12c, 12d (hereinafter referred to as through hole 12 when not distinguished) were formed. These through holes 12 were formed in a round hole shape having a diameter slightly larger than the diameter of the main reinforcing bars 8 and 10.

  As shown in FIGS. 12A and 12B, the plurality of through holes 12 have peripheral walls 4 a and 4 c having opposite surfaces of the lower end portion 4 </ b> A of the steel column 4, or surfaces facing each other. Two holes that open to the positions of the peripheral walls 4b and 4d facing each other, for example, the holes 12b and 12d in FIG. 12A or the holes 12a and 12c in FIG. Oppositely formed at positions corresponding to the horizontal direction, that is, at the same position in the height direction and the horizontal direction.

  As shown in FIG. 12A, the through holes 12a and 12c penetrating the peripheral walls 4a and 4c of the lower end portion 4A of the steel column 4 shown in FIG. A total of eight were formed side by side. In addition, a total of eight through holes 12b and 12d penetrating the peripheral walls 4b and 4d shown in FIG. 12 (a) are arranged side by side in four rows in the horizontal direction, as shown in FIG. 12 (b). It had been.

  The through holes 12a and 12c in each step passing through the peripheral walls 4a and 4c and the through holes 12b and 12d in each step passing through the peripheral walls 4b and 4d are shifted by one step in the height direction of the steel column 4. Had been placed.

  As shown in FIGS. 10 and 11, each of the plurality of main reinforcing bars 8, 10 arranged in the foundation concrete 6 and connected to the lower end portion 4 </ b> A of the steel column 4 has male screw portions 8 a, 10 a at the ends thereof. Was formed.

  As shown in FIG. 11, when arranging each of the main reinforcing bars 8 extending in the vertical direction in the figure among the plurality of main reinforcing bars 8, 10, first, the lower end of the main reinforcing bar 8 in the figure is used as the head. By advancing from the upper side to the lower side in the figure, the lower end portion of one main reinforcing bar 8 in the figure is inserted into one through hole 12c from the outside of the peripheral wall 4c of the steel column 4, and the inner side of the peripheral wall 4c is inserted. As described above, the peripheral wall 4a is formed on the peripheral wall 4a having a surface facing the inner surface of the peripheral wall 4c, and protrudes to the outside of the peripheral wall 4a.

  Then, a nut 14 is screwed to the male screw portion 8a of the main reinforcing bar 8 protruding outside the peripheral wall 4a of the steel column 4 from the outside of the peripheral wall 4a. The plurality of nuts 14 screwed to the male screw portions 8a of the plurality of main reinforcing bars 8 are all hooked on the outer surface of the peripheral wall 4a of the steel column 4, and the lower end portion of the main reinforcing bar 8 in the figure is inserted from the through hole 12c. The main rebar 8 was prevented from coming off in the direction opposite to the direction when

  Moreover, as shown in FIG. 11, when arranging each of the main reinforcing bars 10 extending in the left-right direction in the figure among the plurality of main reinforcing bars 8, 10, first, the left end portion of the main reinforcing bar 10 in the drawing is first. By moving forward from the right to the left in the figure, the left end in the figure of one main reinforcing bar 10 is inserted into one through hole 12b from the outside of the peripheral wall 4b of the steel column 4, and the peripheral wall 4b And protrudes to the outside of the peripheral wall 4d from the through hole 12d formed in the peripheral wall 4d having a surface facing the inner surface of the peripheral wall 4b.

  A nut 14 is screwed to the external thread portion 10a of the main reinforcing bar 10 protruding outside the peripheral wall 4d of the steel column 4 from the outside of the peripheral wall 4d. The plurality of nuts 14 screwed to the male screw portions 10a of the plurality of main reinforcing bars 10 are all hooked on the outer surface of the peripheral wall 4d of the steel column 4 and the left end portion of the main reinforcing bar 8 in the figure is inserted from the through hole 12b. The main rebar 10 was prevented from coming off in the direction opposite to the direction when it was touched.

  According to such a conventional steel column and main reinforcing bar connection structure 2, it is described that the connection work between the steel column 4 and the main reinforcing bars 8 and 10 can be made easier than the conventional conventional connecting structure. (See Patent Document 1).

JP 2010-138608 A

  However, in the conventional connecting structure 2 of the steel column and the main reinforcing bar, the through-holes 12a and 12c of each step passing through the peripheral walls 4a and 4c of the steel column 4 and the through-holes 12b of each step passing through the peripheral walls 4b and 4d. , 12d are shifted by one step in the height direction, so that the positions of the peripheral walls 4a, 4b, 4c, 4d are mistaken, for example, the steel column 4 is rotated by 90 ° from the original position. If it arrange | positions, it will become impossible to let the main reinforcing bars 8 and 10 pass to the some through-hole 12 of the steel pillar 4. FIG.

  Therefore, it is necessary to rearrange the steel column 4 so as to correct the positions of the peripheral walls 4a, 4b, 4c, and 4d. However, the steel column 4 has a large outer dimension and is heavy in weight, so the position of the peripheral wall is corrected. Thus, the work of rearranging the steel column 4 has a problem that it takes considerable labor and time.

  Even if the positions of the peripheral walls 4a, 4b, 4c, and 4d of the steel column 4 are correctly rearranged, the main reinforcing bars are respectively inserted into the through holes 12 formed in a round hole shape slightly larger than the diameter of the main reinforcing bars 8 and 10. The operation of passing 8 and 10 is difficult, and there is a problem that considerable labor and time are required.

  Therefore, in view of the above problems, the present invention has an object to provide a connection structure between a steel column and a main reinforcing bar, which can easily and easily perform a connecting operation between the steel column and the main reinforcing bar. is there.

In order to solve the above problems, the connection structure of the steel column and the main reinforcing bar according to the present invention is as follows.
A connecting structure of a square cylindrical steel column whose lower end is embedded in the foundation concrete and a main reinforcing bar arranged in the foundation concrete,
Each of the peripheral wall facing each other of the steel column, a possible insertion of the main reinforcing bars, long hole-like openings extending in the longitudinal direction of the steel columns are formed,
The main rebar is inserted so as to protrude from the opening of one peripheral wall of the peripheral walls facing each other through the opening of the other peripheral wall to the outside of the steel column ,
The openings provided in each of the four peripheral walls of the steel column are formed in the same shape, and the height direction position and the horizontal position in each peripheral wall are the same. It is characterized by being arranged in .
In addition, the connection structure of the steel column and the main reinforcing bar according to the present invention is as follows.
A connecting structure of a cylindrical steel column whose lower end is embedded in the foundation concrete and a main reinforcing bar arranged in the foundation concrete,
A long hole-like opening through which the main reinforcing bar can be inserted is formed in each of the circumferential walls facing each other of the steel column,
The main rebar is inserted so as to protrude from the opening of one peripheral wall of the peripheral walls facing each other through the opening of the other peripheral wall to the outside of the steel column ,
A plurality of the main reinforcing bars are inserted through the opening .

In addition, the connection structure of the steel column and the main reinforcing bar according to the present invention is as follows.
A retaining means is provided at the projecting portion of the main reinforcing bar projecting out of the steel column from the opening of the other peripheral wall.
In addition, the connection structure of the steel column and the main reinforcing bar according to the present invention is as follows.
The through hole through which the protruding portion of the main reinforcing bar that is arranged to contact the outer surface of the other peripheral wall of the steel column and protrudes outside the steel column from the opening of the other peripheral wall is inserted A plate member in which a hole is formed;
A positioning member attached to project outward in the vertical direction from the outer surface of the peripheral wall of the steel column;
The retaining means is provided at the projecting portion of the main reinforcing bar inserted through the through hole of the plate member,
The plate member is arranged such that a lower surface thereof is in contact with an upper surface of the positioning member .

In addition, the connection structure of the steel column and the main reinforcing bar according to the present invention is as follows.
As the retaining means, a nut member that is screw-engaged with the protruding portion of the main reinforcing bar is used.

In addition, the connection structure of the steel column and the main reinforcing bar according to the present invention is as follows.
The opening, the peripheral wall respectively odor Te is characterized in that it has been several forms.

According to such a connecting structure of the steel column and main reinforcing bar of the present invention,
A connecting structure of a cylindrical steel column whose lower end is embedded in the foundation concrete and a main reinforcing bar arranged in the foundation concrete,
A long hole-like opening through which the main reinforcing bar can be inserted is formed in each of the circumferential walls facing each other of the steel column,
By inserting the main rebar so as to protrude from the opening of one peripheral wall of the peripheral walls facing each other to the outside of the steel column through the opening of the other peripheral wall,
The steel column and the main reinforcing bar can be connected more easily and easily than before.

It is a partially broken front view which shows the connection structure 20 of the steel column and main reinforcement which concerns on the 1st Embodiment of this invention. It is a BB arrow directional cross-sectional view of the connection structure 20 of the steel column and main reinforcing bar shown in FIG. It is a figure which shows the steel column 22 shown in FIG. 1, Comprising: Fig.3 (a) is the front view, FIG.3 (b) is the side view. FIG. 3 is a horizontal sectional view showing a state in which only the steel column 22 is rotated 90 degrees in the clockwise direction in the drawing in the steel column and main reinforcing bar connection structure 20 shown in FIG. 2. It is a partially broken front view which shows the connection structure 40 of the steel column and main reinforcement which concerns on the 2nd Embodiment of this invention. It is CC sectional view taken on the line C-C of the connecting structure 40 of the steel column and main reinforcing bar shown in FIG. It is a figure which shows the steel column 42 shown in FIG. 5, Comprising: Fig.7 (a) is the front view, FIG.7 (b) is the side view. It is a figure which shows the steel column and main reinforcement connection structure 60 which concerns on the 3rd Embodiment of this invention, Comprising: In the BB arrow sectional drawing of the steel column and main reinforcement connection structure 20 shown in FIG. It is an equivalent figure. It is a figure which shows the steel column and the main reinforcement connection structure 80 which concerns on the 4th Embodiment of this invention, Comprising: In the BB arrow sectional drawing of the connection structure 20 of the steel column and the main reinforcement shown in FIG. It is an equivalent figure. It is a partially broken front view which shows the connection structure 2 of the conventional steel frame pillar and main reinforcement. It is an AA arrow directional cross-sectional view of the connection structure 2 of the steel column and main reinforcing bar shown in FIG. It is a figure which shows the steel column 4 shown in FIG. 10, Comprising: FIG. 12 (a) is the front view, FIG.12 (b) is the side view.

  EMBODIMENT OF THE INVENTION Hereinafter, the form for implementing the connection structure of the steel column and main reinforcement which concerns on this invention is demonstrated concretely based on drawing.

  FIG. 1 to FIG. 4 are views referred to for explaining a connection structure 20 between a steel column and a main reinforcing bar according to the first embodiment of the present invention. Hereinafter, the same parts as those of the conventional steel column and main reinforcing bar connection structure 2 will be described with the same reference numerals, and redundant description of the same configuration as the conventional one will be omitted except for a part thereof. To do.

  As shown in FIG. 1, the steel column and main reinforcing bar connection structure 20 according to the present embodiment has a lower end portion 22A of a square cylindrical steel column 22 embedded in a foundation concrete 6 in a building structure. The steel column 22 is connected to the main reinforcing bars 8 and 10 in the foundation concrete 6 through the plate member 26 and the nut 14.

  As shown in FIG. 2, the steel column 22 has peripheral walls 22a, 22b, 22c, and 22d (each having a substantially square cylindrical side) in a horizontal cross section perpendicular to the length direction (the direction perpendicular to the paper surface in the drawing). Hereinafter, when not distinguished, it is referred to as a peripheral wall 22).

  The lower end portion 22A of the steel column 22 has a plurality of openings 24a that communicate with each other at positions facing each other on the surfaces facing each other of the peripheral walls 22a, 22b, 22c, and 22d of the steel column 22. 24b, 24c, 24d (hereinafter referred to as opening 24 when not distinguished) are formed.

  As shown in FIGS. 1 and 3, these openings 24 are arranged in two stages in the vertical direction in the figure, and the lengths thereof are arranged in the vertical direction in the figure, that is, in the length direction of the steel column 22. It has a long hole shape.

  The dimension in the length direction of the opening 24 is slightly larger than twice the diameter of the main reinforcing bar 8 or the main reinforcing bar 10, and the dimension in the width direction is slightly larger than the diameter of the main reinforcing bar 8 or the main reinforcing bar 10. Is formed.

  As shown to Fig.3 (a), the opening parts 24a and 24c which penetrate the surrounding walls 22a and 22c of the steel column 22 are formed in a row in the horizontal direction at 4 steps, and a total of 8 openings are formed. Further, as shown in FIG. 3B, a total of eight openings 24b and 24d penetrating through the peripheral walls 22b and 22d are also formed in four rows in the horizontal direction.

  The openings 24a and 24c of each step passing through the peripheral walls 22a and 22c and the openings 24b and 24d of each step passing through the peripheral walls 22b and 22d are arranged so that their positions in the height direction are the same. ing. Further, the openings 24a, 24b, 24c, and 24d are formed at the same positions corresponding to each other in the horizontal direction on the surfaces of the peripheral walls 22a, 22b, 22c, and 22d.

  As shown in FIG. 3A, the positioning member 25 is disposed below the opening 24a in the lower stage on the peripheral wall 22a of the steel column 22 and is provided side by side in the horizontal direction. Further, as shown in FIG. 3B, the positioning member 25 is also disposed below the lower opening 24b on the peripheral wall 22b of the steel column 22, and two positioning members 25 are provided in the horizontal direction.

  Similarly, the positioning members 25 are also arranged below the lower openings 24c and 24d on the peripheral walls 22c and 22d of the steel column 22, and two positioning members 25 are provided in the horizontal direction.

  As shown in FIGS. 3A and 3B, these positioning members 25 are formed in a rectangular parallelepiped shape having a length in the horizontal direction, and protrude outward in the vertical direction from the outer surface of the peripheral wall 22 of the steel column 22. It is attached to do.

  When arranging each of the main reinforcing bars 8 extending in the vertical direction in FIG. 2 among the plurality of main reinforcing bars 8, 10, first, the lower end of the main reinforcing bar 8 in FIG. By moving forward, the lower end in the figure of one main reinforcing bar 8 is inserted into one opening 24c from the outside of the peripheral wall 22c of the steel column 22, passes through the inside of the peripheral wall 22c, and passes through the inside of the peripheral wall 22c. It protrudes to the outer side of the surrounding wall 22a from the opening part 24a formed in the surrounding wall 22a which has a surface facing this surface.

  And when arranging each of the main reinforcing bars 10 extending in the left-right direction in FIG. 2, by first moving forward from the right side to the left side in FIG. The left end in the figure of one main reinforcing bar 10 is inserted into one opening 24b from the outside of the peripheral wall 22b of the steel column 22, passes through the inside of the peripheral wall 22b, and faces the inner surface of the peripheral wall 22b. The peripheral wall 22d is formed on the peripheral wall 22d and protrudes from the opening 24d to the outside of the peripheral wall 22d.

  As shown in FIG. 1 and FIG. 2, the steel column and main reinforcing bar connection structure 20 according to the present embodiment is arranged on the outer surface of the peripheral walls 22 a and 22 d of the lower end portion 22 </ b> A of the steel column 22. There are a total of four plate members 26 arranged in contact with the upper and lower side surfaces.

  As shown in FIG. 2, these four plate members 26 are provided with male screw portions 8 a and 10 a at the ends of the main reinforcing bars 8 and 10 protruding outward in the vertical direction from the outer surfaces of the peripheral walls 22 a and 22 d of the steel column 22. A plurality of through holes 26a through which each is inserted are formed.

  As shown in FIG. 1, the plate member 26 is formed in a long plate shape so as to cover all the four openings 24 arranged side by side along the horizontal direction on the peripheral wall 22 of the steel column 22. The plate member 26 has a through hole 26 a centered at a position shifted in the width direction perpendicular to the center line in the length direction (left and right direction in the figure) so as to be equally spaced from the opening 24. Four plate members 26 are formed side by side along the length direction.

  At this time, as shown in FIG. 1, these four plate members 26 are placed on the positioning members 25 provided on the peripheral walls 22 a and 22 d of the steel column 22 in the width direction (vertical direction in the figure). They are arranged side by side. The two plate members 26 arranged in contact with the peripheral wall 22 a of the steel column 22 are arranged at positions where the through holes 26 a are shifted upward in the drawing from the center in the width direction, and contact the peripheral wall 22 d of the steel column 22. The two plate members 26 arranged in this manner are arranged at positions where the through holes 26a are shifted downward in the drawing from the center in the width direction.

  A nut 14 is screwed from the outside of the plate member 26 to the male screw portions 8a, 10a at the ends of the main reinforcing bars 8, 10 inserted through the through holes 26a of the plate member 26. The plurality of nuts 14 screwed to the male screw portions 8a, 10a of the plurality of main reinforcing bars 8, 10 are all hooked on the outer side surface 26b of the plate member 26, and the end portions of the main reinforcing bars 8, 10 are inserted from the openings 24. The main reinforcing bars 8 and 10 are prevented from coming off in the direction opposite to the direction when they are inserted.

  At this time, as shown in FIG. 1 and FIG. 2, two nuts 14 and 14 (double nuts) remove the gap between each other in the male screw portions 8a and 10a at the ends of the main reinforcing bars 8 and 10. It is desirable that the screws are fastened to prevent loosening of the screws.

  In the connection structure 20 of the steel column and main reinforcing bar according to this embodiment, the main reinforcing bar 8 in the series of operations is connected to the steel frame with respect to the operation of connecting the steel column 22 and the main reinforcing bars 8 and 10. The work of passing through both the openings 24a and 24c of the column 22 and the work of passing the main rebar 10 through both the openings 24b and 24d of the steel column 22 are longer than the diameter of the main rebars 8 and 10. Therefore, the connecting work between the steel column 22 and the main reinforcing bars 8 and 10 can be made easier than before.

  Moreover, in the connection structure 20 of the steel column and the main reinforcing bar according to the present embodiment, each of the plurality of openings 24 is formed in the shape of a long hole extending in the length direction of the steel column 22, so FIG. As shown in the figure, even if the positions of the peripheral walls 22a, 22b, 22c, and 22d of the steel column 22 are rotated 90 ° clockwise from the position shown in FIG. 8 and 10 can be passed, and the main reinforcing bars 8 and 10 can be connected to the steel column 22.

  That is, the openings 24a, 24b, 24c, and 24d in the steel column and main reinforcing bar connection structure 20 according to the present embodiment have the same height in each of the two stages, and the peripheral walls 22a, The positions in the left-right direction on the surfaces 22b, 22c, and 22d are formed at the same positions corresponding to each other.

  Therefore, each of the main reinforcing bars 8 extending in the vertical direction in FIG. 4 is inserted from the opening 24d of the peripheral wall 22d of the steel column 22 by the male screw portion 8a moving forward from the upper side to the lower side in the same figure. The bar can be arranged so as to pass through the inner side and protrude outward from the opening 24b of the peripheral wall 22b.

  Further, each of the main reinforcing bars 10 extending in the left-right direction in FIG. 4 is inserted from the opening 24c of the peripheral wall 22c of the steel column 22 by the male screw portion 10a moving forward from the right to the left in the figure. Rarely, it can be arranged so that it passes through the inside and protrudes outward from the opening 22a of the peripheral wall 22a.

  For this reason, in the connection structure 20 of the steel column and the main reinforcing bar according to the present embodiment, the main reinforcing bars 8 and 10 are passed through the plurality of openings 24 regardless of the positions of the peripheral walls 22a, 22b, 22c, and 22d. Can be connected to the steel column 22.

  For this reason, since it is not necessary to perform the work of rearranging the steel column 22 when the positions of the peripheral walls 22a, 22b, 22c, and 22d are mistaken as in the prior art, the connecting operation of the steel column 22 and the main reinforcing bars 8 and 10 is not necessary. Can be performed more easily than in the past.

  Further, when the steel column 22 is arranged, it is not necessary to work while paying attention to the positions of the peripheral walls 22a, 22b, 22c, and 22d, so that the connecting operation of the steel column 22 and the main reinforcing bars 8 and 10 is performed more than before. It can be done easily.

  Moreover, in the connection structure 20 of the steel column and main reinforcing bar which concerns on this Embodiment, the plate member 26 which has the through-hole 26a is provided, and the positional relationship between each of the main reinforcing bars 8 and 10 is a plate member. It can arrange | position according to the position of 26 through-holes 26a.

  Furthermore, the load transmitted between the steel column 22 and the main reinforcing bars 8 and 10 is a contact surface between the plate member 26 and the peripheral wall 22a of the steel column 22 in the transmission path, or the plate member 26 and the steel column. Since the contact surface between the peripheral wall 22b and the peripheral wall 22b of the steel frame 22 is dispersed, it is possible to prevent a large load from acting locally as in the case where only the nut contacts the peripheral wall 22 of the steel column 22. Further, it is possible to prevent deformation due to a local load on the peripheral wall 22 of the steel column 22.

  Moreover, in the connection structure 20 of the steel column and the main reinforcement according to the present embodiment, the plate member 26 is welded to the peripheral wall 22 of the steel column 22 even if the opening 24 is formed in the peripheral wall 22 of the steel column 22. Thereby, it can prevent that the intensity | strength of the surrounding wall 22 of the steel column 22 falls.

  Further, in the steel column / main reinforcing bar connection structure 20 according to the present embodiment, since the positioning member 25 is provided on the peripheral wall 22 of the steel column 22, the positioning of the plate member 26 can be facilitated. it can.

  Further, in the steel column and main reinforcing bar connection structure 20 according to the present embodiment, the center of the through hole 26a of the plate member 26 is shifted in the width direction perpendicular to the length direction of the plate member 26. Therefore, the plate member 26 having the same shape can be formed on any of the peripheral walls 22a, 22b, 22c, and 22d only by taking care not to mistake the vertical direction of the width direction. It can be used.

  As described above, according to the connecting structure 20 between the steel column and the main reinforcing bar according to the present embodiment, the connecting operation of the steel column 22 and the main reinforcing bars 8 and 10 can be performed more easily and easily than before. .

  FIGS. 5 to 7 are views referred to for explaining a connection structure 40 of the steel column and the main reinforcing bar according to the second embodiment of the present invention.

  In the steel column and main reinforcing bar connection structure 40 according to the present embodiment, as shown in FIGS. 7A and 7B, the structure is divided into two upper and lower stages in the first embodiment. The structure differs from the steel column / main reinforcing bar connection structure 20 according to the first embodiment in that two openings 24 are connected to each other in the length direction to form one opening 44.

  As shown in FIG. 6, the lower end portion 42 </ b> A of the steel column 42 has a peripheral wall that constitutes each of the four sides of a substantially square cylindrical shape in a horizontal cross section perpendicular to the length direction of the steel column 42 (the vertical direction in the drawing). A plurality of openings 44a, 44b, 44c, and 44d (hereinafter referred to as openings 44 when not distinguished) are formed in the openings 42a, 42b, 42c, and 42d, respectively.

  As shown in FIGS. 5 and 7, the openings 44 formed in these steel columns 42 have a length in the vertical direction in the drawing and are formed in one long hole shape in the vertical direction.

  The dimension in the length direction of the opening 44 is slightly larger than four times the diameter of the main reinforcing bar 8 or the main reinforcing bar 10, and the dimension in the width direction is slightly larger than the diameter of the main reinforcing bar 8 or the main reinforcing bar 10. Largely formed.

  As shown to Fig.7 (a), the opening parts 44a and 44c which penetrate the surrounding walls 42a and 42c of the steel frame column 42 are formed along with 4 each in the horizontal direction. Moreover, as shown in FIG.7 (b), the opening parts 44b and 44d which penetrate the surrounding walls 42b and 42d are also formed in the horizontal direction 4 each.

  The openings 44a and 44c penetrating the peripheral walls 42a and 42c and the openings 44b and 44d penetrating the peripheral walls 42b and 42d are arranged so that their positions in the height direction are the same. The openings 44a, 44b, 44c, and 44d are formed at the same positions corresponding to each other in the left-right direction on the surfaces of the peripheral walls 42a, 42b, 42c, and 42d.

  When arranging each of the main reinforcing bars 8 extending in the vertical direction in FIG. 6 among the plurality of main reinforcing bars 8, 10, first, the lower end portion in FIG. By moving forward, the lower end portions of the two main reinforcing bars 8 in the drawing are aligned in the direction perpendicular to the paper surface in the drawing (up and down direction in FIG. 5) from the outside of the peripheral wall 42c of the steel column 42 to one opening 44c. And passes through the inside of the peripheral wall 42c and protrudes to the outside of the peripheral wall 42a from an opening 44a formed in the peripheral wall 42a facing the peripheral wall 42c.

  Then, when placing each of the main reinforcing bars 10 extending in the left-right direction in FIG. 6, first, by moving forward from the right side to the left side in FIG. From the outside of the peripheral wall 42b of the steel column 42, the left end in the figure of the two main reinforcing bars 10 is inserted into one opening 44b in a state aligned in the direction perpendicular to the plane of the drawing (up and down in FIG. 5). It passes through the inside of the peripheral wall 42b and protrudes to the outside of the peripheral wall 42d from an opening 44d formed in the peripheral wall 42d facing the peripheral wall 42b.

  In the steel column / main reinforcing bar connection structure 40 according to the present embodiment, each of the plurality of openings 44 is formed in the shape of a long hole extending in the length direction of the steel column 42, and thus the peripheral walls 42a, 42b, 42c. , 42d, two main rebars 8 and 10 can be passed through each of the plurality of openings 44, and the steel column 42 and the main rebars 8 and 10 can be connected.

  For this reason, according to the connection structure 40 of the steel column and the main reinforcing bar according to the present embodiment, the steel column 42 and the main reinforcement are similar to the connection structure 20 of the steel column and the main reinforcing bar according to the first embodiment. The connection work of 8, 10 can be performed more easily and easily than before.

  Moreover, in the connection structure 40 of the steel column and the main reinforcing bar according to the present embodiment, the two openings 24 arranged in the upper and lower two stages in the first embodiment are arranged in the length direction. Since they are connected and formed in one opening 44, the main reinforcing bars 8 and 10 can be easily passed through the opening 44, and the connection work between the steel column 42 and the main reinforcing bars 8 and 10 can be performed more easily.

  Further, in the steel column and main reinforcing bar connection structure 40 according to the present embodiment, two main reinforcing bars 8 and 10 can be passed through each of the plurality of openings 44, and the main reinforcing bar 8 is passed through the openings 44. , 10 can be passed simultaneously, so that the steel column 42 and the main reinforcing bars 8, 10 can be connected more easily.

  FIG. 8 is a diagram which is referred to for explaining the connection structure 60 of the steel column and the main reinforcing bar according to the third embodiment of the present invention.

  The steel column and main reinforcing bar connection structure 60 according to the present embodiment is a building structure in that the steel column 22 is arranged as a side column along the wall between the corners of the building structure. This is different from the steel column 22 and main reinforcing bar connection structure 20 according to the first embodiment in which the steel column 22 as the corner column is disposed.

  As shown in FIG. 8, the main reinforcing bar 8 in the connecting structure 60 of the steel column and main reinforcing bar according to the present embodiment is formed in the middle of the length direction of the opening 24 a and the peripheral wall 22 c of the peripheral wall 22 a of the steel column 22. The opening 24c is simply inserted.

  And the both ends of the length direction of the main rebar 8 are arranged away from the steel column 22 in the vertical direction in the figure, and in the steel column as a corner column arranged at the corner of the building structure, It is connected to the retaining means.

  In the steel column and main reinforcing bar connection structure 60 according to the present embodiment, the first and second embodiments are common in that the opening 24 is formed in a long hole shape. It can be implemented in the same manner as any one of the connecting structures 20 and 40 of the steel column and the main reinforcing bar.

  According to the steel column and main reinforcing bar connection structure 60 according to the present embodiment, the steel column 22 and the main reinforcing bars 8 and 10 are similar to the steel column and main reinforcing bar connection structure 20 according to the first embodiment. This connection operation can be performed more easily and easily than in the past.

  FIG. 9 is a view referred to for explaining a connecting structure 80 of steel columns and main reinforcing bars according to the fourth embodiment of the present invention.

  The connection structure 80 of the steel column and the main reinforcing bar according to the present embodiment is more of a building structure than a corner column in a building structure or a steel column as a side column arranged along a wall of a building structure. The steel column 22 is arranged at the corner of the building structure in that the steel column 22 is arranged at the center on the horizontal plane, that is, at the center of the building structure surrounded by the corner columns and side columns. What is different from the connection structure 20 according to the first embodiment in which the steel column 22 is arranged and the connection structure 60 according to the third embodiment in which the steel pillar 22 is arranged along the wall of the building structure It is.

  As shown in FIG. 9, the main reinforcing bar 8 in the connecting structure 80 of the steel column and main reinforcing bar according to the present embodiment has an opening 24 a and a peripheral wall 22 c of the peripheral wall 22 a of the steel column 22 in the middle of the length direction. The opening 24c is simply inserted.

  And the both ends of the length direction of the main rebar 8 are arranged away from the steel column 22 in the vertical direction in the figure, and in the steel column as a side column arranged along the wall in the building structure, It is connected to the retaining means.

  Further, as shown in FIG. 9, the main reinforcing bar 10 in the connecting structure 80 of the steel column and the main reinforcing bar according to the present embodiment has an opening 24b and a peripheral wall of the peripheral wall 22b of the steel column 22 in the middle of its length direction. The opening 24d of 22d is simply inserted.

  And the both ends of the length direction of the main rebar 10 are arranged away from the steel column 22 in the left-right direction in the figure, and in the steel column as a side column arranged along the wall in the building structure, It is connected to the retaining means.

  In the steel column and main reinforcing bar connection structure 80 according to this embodiment, the first and second embodiments are common in that the opening 24 is formed in a long hole shape. It can be implemented in the same manner as any one of the connecting structures 20 and 40 of the steel column and the main reinforcing bar.

  According to the steel column and main reinforcing bar connection structure 80 according to the present embodiment, the steel column 22 and main reinforcing bar are similar to the steel column / main reinforcing bar connection structure 20 according to the first embodiment. The connection work of 8, 10 can be performed more easily and easily than before.

  In the first and second embodiments, each of the plurality of main reinforcing bars 8 and 10 has the male screw portions 8a and 10a formed at the ends thereof. Each may be formed in the shape of a screw rod in which a male screw portion is formed in all the length directions.

  Further, in the steel column and main reinforcing bar connection structure 20 according to the first embodiment, the main reinforcing bars 8 and 10 are arranged in two horizontal rows in the upper and lower two stages so that a total of eight bars are arranged. However, as long as the main reinforcing bars 8 and 10 correspond to each other in number and arrangement, it is not necessary to be limited to such an embodiment, and the number of arrangement of the reinforcing bars may be increased or decreased. It may be changed to a state.

  Moreover, in order to respond to the change in the number and arrangement of the main reinforcing bars 8 and 10, the opening 24 that penetrates the peripheral walls 22a, 22b, 22c, and 22d of the steel column 22 and the penetration that penetrates the plate member 26 are provided. You may change the number and arrangement | positioning state of the hole 26a. Further, the number and shape of the positioning member 25 and the plate member 26 may be changed, or the positioning member 25 may not be attached and the plate member 26 may not be arranged.

  In the first and second embodiments, one or two main reinforcing bars 8 and 10 are passed through one opening 24 and 44, but one opening 24 is provided. , 44, three or more main reinforcing bars 8, 10 may be passed.

  In the steel column and main reinforcing bar connection structure 20 according to the first and second embodiments, the end portions of the main reinforcing bars 8 and 10 are prevented from coming out of the opening 24 or the through hole 26a. As a means for preventing the nut from being removed, the nut 14 screwed to the male screw portions 8a, 10a formed at the ends of the main reinforcing bars 8, 10 is locked to the outer surface 26b of the plate member 26.

  On the other hand, the retaining means for preventing the end portions of the main reinforcing bars 8 and 10 from coming off from the opening 24 or the like need not be limited to such, for example, the main reinforcing bars other than the nut 14. By welding or connecting a member larger than the diameter of 8 or 10 to the end of the main reinforcing bars 8 or 10, the end of the main reinforcing bars 8 or 10 is prevented from coming out of the opening 24 or the through hole 26a. Also good.

  In addition, in the steel column and main reinforcing bar connection structure 20 according to the first and second embodiments, as shown in FIG. 2 and the like, the main reinforcing bars 8 and 10 connected to the steel column 22 and the like are Although the retaining means is provided at the lower side and the left side of the steel column 22 and the like, the retaining means is the steel column and main reinforcing bar connection structure 60 according to the third embodiment. A retaining means may be provided only at one position on the left side of the steel column 22, and the steel column 22 may be provided in the steel column 22 and main reinforcing bar connection structure 80 according to the fourth embodiment. The retaining means may not be provided.

  In the steel column and main reinforcing bar connection structure 20 according to the first and second embodiments, the case where one side of the plate member 26 is in contact with the outer side surface of the steel column has been described. The member 26 and the outer surface such as the steel column 22 are not necessarily limited to the case where they are in contact with each other, and may have a structure in which there is a gap between them.

  In the steel column and main reinforcing bar connecting structure 20 according to the first and second embodiments, the inside of the steel column 22 or the like embedded in the foundation concrete 6 is hollow. A filler such as concrete or a synthetic resin material may be filled in an internal cavity such as 22.

  Furthermore, in the steel column and main reinforcing bar connecting structure 20 according to the first and second embodiments, as shown in FIG. 2 and the like, the peripheral wall 22a of the steel column 22 etc. The long hole-shaped opening 24a having a length in the length direction is formed, but a long hole-shaped opening having a length in a direction perpendicular to the length direction of the steel column 22 or the like is formed. You can also. As a result, the degree of freedom in assembling the steel column and main reinforcing bar connecting structure 20 can be further improved.

2 Steel column and main reinforcing bar connection structure 4 Steel column 4A Lower end 4a, 4b, 4c, 4d Peripheral wall 6 Foundation concrete 8,10 Main reinforcing bar 8a, 10a Male thread 12, 12, 12a, 12b, 12c, 12d Through hole 14 Nut 20 Connection structure of steel column and main reinforcing bar 22 Steel column 22A Lower end 22a, 22b, 22c, 22d Peripheral wall 24, 24a, 24b, 24c, 24d Opening 25 Positioning member 26 Plate member 26a Through hole 26b Outer side surface 40 Steel column and main Reinforcing bar connection structure 42 Steel column 42A Lower end part 42a, 42b, 42c, 42d Peripheral walls 44, 44a, 44b, 44c, 44d Opening 60 Connection structure of steel column and main reinforcing bar 80 Connecting structure of steel column and main reinforcing bar

Claims (6)

A connecting structure of a square cylindrical steel column whose lower end is embedded in the foundation concrete and a main reinforcing bar arranged in the foundation concrete,
Each of the peripheral wall facing each other of the steel column, a possible insertion of the main reinforcing bars, long hole-like openings extending in the longitudinal direction of the steel columns are formed,
The main rebar is inserted so as to protrude from the opening of one peripheral wall of the peripheral walls facing each other through the opening of the other peripheral wall to the outside of the steel column ,
The openings provided in each of the four peripheral walls of the steel column are formed in the same shape, and the height direction position and the horizontal position in each peripheral wall are the same. The connection structure of the steel column and the main rebar characterized by being arranged in . A connecting structure of a cylindrical steel column whose lower end is embedded in the foundation concrete and a main reinforcing bar arranged in the foundation concrete,
A long hole-like opening through which the main reinforcing bar can be inserted is formed in each of the circumferential walls facing each other of the steel column,
The main rebar is inserted so as to protrude from the opening of one peripheral wall of the peripheral walls facing each other through the opening of the other peripheral wall to the outside of the steel column ,
A connection structure between a steel column and a main reinforcing bar , wherein a plurality of the main reinforcing bars are inserted into the opening . The connection between the steel column and the main reinforcing bar according to claim 1 or 2 , wherein a retaining means is provided at a protruding portion of the main reinforcing bar protruding outside the steel column from the opening of the other peripheral wall. Construction. The through hole through which the protruding portion of the main reinforcing bar that is arranged to contact the outer surface of the other peripheral wall of the steel column and protrudes outside the steel column from the opening of the other peripheral wall is inserted A plate member in which a hole is formed;
A positioning member attached to project outward in the vertical direction from the outer surface of the peripheral wall of the steel column;
The retaining means is provided at the projecting portion of the main reinforcing bar inserted through the through hole of the plate member,
The plate member is disposed such that the lower surface thereof is in contact with the upper surface of the positioning member.
The connection structure of the steel column and main reinforcing bar according to claim 3 characterized by things. The connection structure of the steel column and the main reinforcing bar according to claim 3 or 4 , wherein a nut member screwed to the protruding portion of the main reinforcing bar is used as the retaining means. The opening, connection structure of steel columns and the main reinforcement according to any one of claims 1 to 5, characterized in that the peripheral wall is respectively several forms Te odor.

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