JP4008014B2 - Joining joint - Google Patents

Description

  The present invention relates to a joint for a structure.

As described in Patent Document 1, there is a joint for rigidly connecting a column base of a building based on the column base of the column. That is, the column base of the column is rigidly connected to the foundation, and the displacement of the crossing angle between the column and the foundation is reduced as compared with the case of the pin connection, and the deformation of the entire building can be reduced.
JP2005-2777

  An object of the present invention is to minimize the deformation of the entire structure in a joint joint.

According to the first aspect of the present invention, there is provided a joint joint for joining a beam end of a structure, a column base, or a peripheral member rigidly joined thereto to another structure capable of receiving a bending moment through a supporting means. In the above, by causing the support means to deform due to a slight geometric movement within the elastic range due to the reaction force generated at the joint portion with other structure due to the external force acting on the beam or column, It is possible to generate a bending moment Mr which is opposite to the bending moment Mc generated at the column base or the beam end , and the support means is composed of a combination of at least two rods, and these rods are connected to the other end. While joining to the structure, the other end is joined to the beam end, the column base, or a peripheral member rigidly joined thereto, one end of each of the rods is separated from the other end, and the other end interval is set to one end interval so as to be narrower Those were.

The invention of claim 2 is the invention of claim 1, wherein Mr = Mc .

The invention of claim 3 is the invention of claim 1 , wherein Mr> Mc .

According to a fourth aspect of the present invention, in the third aspect of the present invention, a shearing force in the same direction as a shearing force acting on the column acts on a peripheral member rigidly joined to the column base .

The invention of claim 5 is based on another structure in which the column base or the peripheral member is joined via a supporting means in the invention of any one of claims 1 to 4 .

The invention of claim 6 is the lower floor building structure according to any one of claims 1 to 4 , wherein the other structure to which the column base or the peripheral member is joined via the supporting means .

  In the building structure of the present invention, each column base of a plurality of columns arranged side by side is joined to the lower structure. For example, the column base of one of the two columns is unique to the present invention. It is also possible to apply a joint joint and apply a simple pin joint joint to the column base of the other one column without depending on the joint joint unique to the present invention.

  In the column base joint according to the present invention, the rod pair provided between the lower structure and the base member is not limited to two rods but may be composed of four rods or the like. Two rods may be provided on the wife side of the column base and the other two rods may be provided on the beam side.

  In the joining port according to the present invention, the upper end or lower end of the two rods and the base member or the lower structure may be joined together by pin joining or rigid joining.

  The generation of the axial force in the constituent rods of the rod pair occurs when the base member is about to be moved in the same shearing direction by the shearing force acting on the column.

  In the present invention, the “rod” is not limited to a rod shape, but includes a shape steel shape and a plate shape.

(Claim 1)
(a) Acts perpendicular to the axis of the beam or column at the joint end where the beam end of the structure, the column base, or a peripheral member rigidly joined thereto is joined to another structure via the support means The bending moment Mr, which is in the opposite direction to the bending moment Mc generated at the column base or beam end due to the force applied, is deformed by the deformation of the support means (deformation caused by slight geometric movement within the elastic range of the support means). Making it possible to reduce the deformation of the beam end or the column base (displacement of the crossing angle between the beam or the column and another structure) reduces the deformation of the entire structure.

(b) A rod pair consisting of a combination of two rods is provided between a beam end, a column base, or a peripheral member rigidly joined thereto and another structure, and the two rods have their one end connected to the other While joining to the structure, joining the other end to the beam end , the column base, or a peripheral member rigidly joined thereto, and making the other end interval of the two rods narrower than the one end interval, The axial force of the two rods exerts a bending moment on the beam end or column base, and this bending moment reduces the deformation of the beam or column (displacement of the crossing angle between the column and the foundation) and minimizes the deformation of the entire building. Acts as follows.

(c) When a shearing force acts on the beam or column of the building structure and an axial force is generated on the two rods, a bending moment Mr generated at the beam end or the column base due to the axial force of the two rods but becomes the bending moment Mc opposite direction occurs on the beam end or the column base due to the shear forces acting on the beam or pillar. Thus, the bending and deformation of the beam or column by moment Mc, bending killed deformation of the beam or column by moment Mr is a phase with each other, to reduce the deformation of the beam or pillar, the deformation of the entire building minimized.

(d) Since the deformation of the beam or column can be reduced by the bending moments Mr and Mc acting on the beam end or column base as described in (b) and (c) above, one end of the two rods is changed to another structure. Even when the pins are simply joined without being rigidly joined, the deformation of the beam or column can be reduced and the deformation of the entire building can be minimized.

(Claim 2 )
(e) By setting the bending moment Mr and bending moment Mc to Mr = Mc, the beam end or column base is rigidly connected to other structures (the column base does not rotate and the angle between the column and the foundation is And the deformation of the beam or column can be reduced.

(Claim 3 )
(f) By setting the bending moment Mr and the bending moment Mc to Mr> Mc, the beam end or column base is returned to the opposite direction by Mr, and becomes a super-rigid joint state, and the beam or column is deformed. Can be made smaller than the above (d). The beam end or column base moves in the shear direction.

(Claim 4 )
(g) The fulcrum reaction force Q exerted on the two rods by the lower structure to which the column base is joined is made to act on the column base by the shear force Q2 in the same direction as the shear force Q1 acting on the column. = Q1 + Q2 is increased, so that the axial force of the two rods is increased, the bending moment Mr is increased, and the effect of providing the two rods can be further improved.

(Claim 5 )
(h) The above-described (a) to (g) can be realized in the joint joint that joins the pillars of the building structure .

(Claim 6 )
(i) The above- described (a) to (g) can be realized in a joint joint that joins a column of an upper-floor building structure to a head or beam of a lower-floor building structure. High rigidity can be obtained in the beam winning method.

  1 is a schematic diagram showing a portal ramen structure of Example 1, FIG. 2 is a front view showing the portal ramen structure, FIG. 3 is a schematic diagram showing a horizontal force acting on a column base joint, and FIG. FIG. 5 is a schematic diagram showing a ramen unit structure of the second embodiment, FIG. 6 is a front view showing the ramen unit structure, and FIG. 7 is a portal ramen of the third embodiment. FIG. 8 is a schematic plan view showing the building structure of Example 4, FIG. 9 is a schematic diagram showing the column base joint connection of Example 5, and FIG. 10 is the column base joint finish of Example 6. FIG. 11 is a schematic view showing a column base joint connection according to the seventh embodiment.

Example 1 (FIGS. 1 to 4)
As shown in FIGS. 1 and 2, the building structure (structure) 10 has a portal ramen structure, and the columns 11 and 11 arranged side by side are connected to each other by a beam 12 that is rigidly joined to their upper ends. . In the building structure 10, the column bases 11 </ b> A of the columns 11 and 11 are joined to the foundation 13 (lower structure) by the column base joint joint 20. Hereinafter, the configuration of the column base joint 20 will be described.

  The column base joint opening 20 rigidly joins the mounting member 21A to the column base 11A, and this mounting member 21A is used as a base member 21 as a peripheral member rigidly joined to the column base 11A.

  The columnar joint joint 20 is provided with a rod pair 22 composed of a combination of two rods 22A and 22B as a supporting means between the base 13 and the base member 21. The two rods 22 </ b> A and 22 </ b> B have their lower ends pin-joined (or rigidly joined) to the base 13, and their upper ends are pin-joined (or rigidly joined) to the base member 21. The distance between the upper ends of the two rods 22A and 22B is made smaller than the distance between the lower ends (the rods 22A and 22B are arranged so as to form a square shape with each other, and the upper end distance on the column 11 side is made narrower than the lower end distance on the foundation 13 side. ). In the present embodiment, the rod 22A on the shear front side along the direction of the horizontal shearing force Q1 acting on the column 11 is tilted backward, and the rod 22B on the shear rear side is tilted forward.

  Hereinafter, the support mechanism by the column base joint joint 20 of the building structure 10 is demonstrated (FIG. 3, FIG. 4).

  (1) A horizontal shearing force Q1 acts on the column 11. Further, in this embodiment, a horizontal shearing force Q2 (wall load, wind pressure, etc. corresponding to the lower half of the column 11) acts on the base member 21 in the same direction as the shearing force Q1 acting on the column 11. Note that the shearing forces Q1 and Q2 are assumed to be virtually acting on one column.

  At this time, a fulcrum reaction force Q = Q1 + Q2 acts on the joint portion of the two rods 22A, 22B to the foundation 13.

  (2) A bending moment Mc caused by the shearing force Q1 acting on the column 11 is generated at the column base 11A (the rigid joint point with the base member 21).

  (3) Due to the fulcrum reaction force Q (Q1 + Q2) acting on the two rods 22A, 22B, axial forces Ta, Tb are generated on the rods 22A, 22B. The axial forces Ta and Tb are generated when the base member 21 is about to be moved in the shear direction by the shear forces Q1 and Q2 acting on the column 11.

  A bending moment Mr resulting from the axial forces Ta and Tb of the two rods 22A and 22B is generated at the column base 11A (the rigid joint point with the base member 21). The bending moment Mr is in the opposite direction to the bending moment Mc. The bending moment Mr lowers the upper end of the rod 22A on the shear front side, raises the upper end of the rod 22B on the shear rear side, and slightly rotates the base member 21.

  The horizontal components of the axial forces Ta and Tb are Ha and Hb, the vertical components are Va and Vb, and the arm length of the moment with respect to the column base 11A (the rigid joint point with the base member 21) of the axial forces Ta and Tb is a, b, the flange length from the junction point with the column base 11A to the junction point with the rod 22A in the base member 21 is f, the flange length to the junction point with the rod 22B is f, and the rod 22A is the base 13 When the crossing angle made with respect to θa (FIG. 4) and the crossing angle made by the rod 22B with respect to the foundation 13 is θb (FIG. 4), the following formulas (1) to (5) are established. Note that the axial force of the column 11 is ignored.

Q1 + Q2 = Ha + Hb (1)
Va + Vb = 0 (2)
Mr = Ta × a + Tb + b (3)
Mr = (Ha / cos θa) × a + (Hb / cos θb) × b (4)
a = f · sin θa, b = f · sin θb (5)

  Therefore, in order to increase the bending moment Mr, the angles θa and θb of the rods 22A and 22B are increased, the flange length f of the base member 21 is increased, and the shearing force Q2 acting on the base member 21 is increased. Is required.

  Increasing the shearing force Q2 acting on the base member 21 can be realized by receiving a floor load or wind pressure with a beam material or a trunk edge and transmitting this to the base member 21.

  Further, when the joining of the rod 22A (22B) and the base member 21 or the base 13 is a pin joint, since the resistance to the movement of the base member 21 is small, the base member 21 is moved greatly and Mr is also increased. In the case of rigid joining, the resistance against movement of the base member 21 is increased, so that Mr is smaller than that of the pin joining, but the deformation of the rod 22A (22B) is very small, so that slight vibration is generated. Can be suppressed.

  (4) When Mr = Mc, the column base 11A is in a rigid connection state (the column base 11A does not rotate, the relative angle between the column 11 and the foundation 13 is unchanged).

  (5) When Mr> Mc, the column base 11A is returned in the direction opposite to the direction of deformation by Mc. This is called a super-rigid joint state. The base member 21 moves in the shearing direction (Q1 direction).

  (6) When Mr <Mc, the column base 11A is in a semi-rigid joint state (weaker than the rigid joint). The base member 21 moves in the direction opposite to the shearing direction.

According to the present embodiment, the following operational effects can be obtained.
(a) The base member 21 is rigidly joined to the column base 11A, and a rod pair 22 consisting of a combination of two rods 22A and 22B is provided between the base 13 and the base member 21, and the two rods 22A and 22B The lower ends of the two rods 22A and 22B are joined by joining the lower ends of the two rods 22A and 22B to the base 13 and joining the upper ends thereof to the base member 21 so that the upper end interval between the two rods 22A and 22B is smaller than the lower end interval. The axial forces Ta and Tb exert a bending moment Mr on the base member 21, and this bending moment Mr reduces deformation of the column 11 (displacement of the crossing angle between the column 11 and the foundation) and minimizes deformation of the entire building. Works.

  (b) When the shearing force Q1 acts on the column 11 of the building structure 10 and the axial forces Ta and Tb are generated on the two rods 22A and 22B, the axial forces Ta and Tb of the two rods 22A and 22B The bending moment Mr generated in the column base 11A is opposite to the bending moment Mc generated in the column base 11A due to the shearing force Q1 acting on the column 11. Therefore, the deformation of the column 11 due to the bending moment Mc and the deformation of the column 11 due to the bending moment Mr cancel each other, reducing the deformation of the column 11 and minimizing the deformation of the entire building.

  (c) Since the deformation of the column 11 can be reduced by the bending moments Mr and Mc acting on the base member 21 as described above (a) and (b), the lower ends of the two rods 22A and 22B are rigidly joined to the base 13. Without deformation, it is possible to reduce the deformation of the column 11 and minimize the deformation of the entire building even when the pins are simply joined.

  (d) By setting the bending moment Mr and the bending moment Mc to Mr = Mc, the column base 11A is rigidly connected to the foundation 13 (the column base 11A does not rotate, and the intersection angle between the column 11 and the foundation 13 is displaced). No) and the deformation of the pillar 11 can be reduced.

  (e) By setting the bending moment Mr and the bending moment Mc to be Mr> Mc, the column base 11A is returned to the opposite direction by Mr, and becomes a super-rigid joint state, and the column 11 is deformed as described above. d) can be less. The base member 21 moves in the shear direction.

  (f) A fulcrum reaction force Q = Q1 + Q2 exerted by the foundation 13 on the two rods 22A and 22B by applying a shearing force Q2 in the same direction as the shearing force Q1 acting on the column 11 to the base member 21. , And consequently the axial forces Ta and Tb of the two rods 22A and 22B are increased, the bending moment Mr is increased, and the effect of providing the two rods 22A and 22B can be further improved.

  (g) The above-described (a) to (f) can be realized in the joint joint 20 that uses the lower structure as the foundation 13 and joins the column 11 of the building structure 10 to the foundation 13.

Example 2 (FIGS. 5 and 6)
As shown in FIGS. 5 and 6, the building structure 30 has a ramen unit structure, and the parallel columns 31 and 31 are connected to each other by ceiling beams 32 that are rigidly joined to the upper ends thereof, and the lower ends thereof. Are connected by floor beams 33 which are rigidly joined to each other. In the building structure 30, the column bases 31 </ b> A of the columns 31 and 31 are joined to the foundation 34 (lower structure) by the column base joint 40. Hereinafter, the configuration of the column base joint 40 will be described.

  The column base joint 40 has a floor beam 33 (flange 41A) rigidly joined to the column base 31A, and this floor beam 33 serves as a base member 41 as a peripheral member rigidly joined to the column base 31A.

  The column base joint 40 is provided with a rod pair 42 composed of a combination of two rods 42 </ b> A and 42 </ b> B between the foundation 34 and the base member 41. The two rods 42 </ b> A and 42 </ b> B are pin-joined at their lower ends to the base 34 (or rigid joints are possible) and are pin-joined at their upper ends to the base member 41 (may be rigidly joined). The distance between the upper ends of the two rods 42A and 42B is made smaller than the distance between the lower ends (the rods 42A and 42B are arranged so as to form a square shape with each other, and the upper end distance on the column 31 side is made narrower than the lower end distance on the foundation 34 side. ). In the present embodiment, the rod 42A on the shear front side along the direction of the horizontal shearing force Q1 acting on the column 31 is vertically arranged, and the rod 42B on the shear rear side is tilted forward.

  The support mechanism by the column base joint 40 of the building structure 30 is substantially the same as the support mechanism by the column base joint 20 of the building structure 10. Accordingly, the shear force Q1 acts on the column 31 of the building structure 30, and the base member 41 is moved in the shear direction by the shear force Q1, so that the axial force Ta is applied to the two rods 42A and 42B. , Tb is generated, the bending moment Mr generated in the column base 31A (the rigid joint point with the base member 41) due to the axial forces Ta, Tb of the two rods 42A, 42B is sheared acting on the column 31. The direction is opposite to the bending moment Mc generated at the column base 31A (the rigid joint point with the base member 41) due to the force Q1. The base member 41 is subjected to a shearing force Q2 in the same direction as the shearing force Q1 acting on the column 31 (wall load, wind pressure, etc. corresponding to the lower half of the column 31).

According to the present embodiment, the following operational effects can be obtained.
(a) The base member 41 is rigidly joined to the column base 31A, and a rod pair 42 composed of a combination of two rods 42A and 42B is provided between the base 34 and the base member 41. The two rods 42A and 42B The lower ends of the two rods 42A and 42B are joined by joining the lower ends of the two rods 42A and 42B to the base 34 and joining the upper ends of the two to the base member 41. The axial forces Ta and Tb exert a bending moment Mr on the base member 41, and this bending moment Mr reduces deformation of the column 31 (displacement of the crossing angle between the column 31 and the foundation 34), thereby minimizing deformation of the entire building. Act on.

  (b) When the shearing force Q1 acts on the column 31 of the building structure 30 and the axial forces Ta and Tb are generated on the two rods 42A and 42B, the axial forces Ta and Tb of the two rods 42A and 42B The bending moment Mr generated in the column base 31A is opposite to the bending moment Mc generated in the column base 31A due to the shearing force Q1 acting on the column 31. Therefore, the deformation of the column 31 due to the bending moment Mc and the deformation of the column 31 due to the bending moment Mr cancel each other, thereby reducing the deformation of the column 31 and minimizing the deformation of the entire building.

  (c) Since the deformation of the column 31 can be reduced by the bending moments Mr and Mc acting on the base member 41 as described above (a) and (b), the lower ends of the two rods 42A and 42B are rigidly joined to the base 34. Without deformation, it is possible to reduce the deformation of the pillar 31 and minimize the deformation of the entire building even when the pins are simply joined.

  (d) By setting the bending moment Mr and the bending moment Mc to Mr = Mc, the column base 31A is rigidly connected to the foundation 34 (the column base 31A does not rotate, and the intersection angle between the column 31 and the foundation 34 is displaced). No) and the deformation of the pillar 31 can be reduced.

  (e) By setting the bending moment Mr and the bending moment Mc to be Mr> Mc, the column base 31A is returned to the reverse direction by Mr, and becomes a super-rigid joint state, and the column 31 is deformed as described above. d) can be less. The base member 41 moves in the shear direction.

  (f) A fulcrum reaction force Q = Q1 + Q2 exerted by the foundation 34 on the two rods 42A and 42B by causing the shear force Q2 in the same direction as the shear force Q1 acting on the column 31 to act on the base member 41. , And consequently the axial forces Ta and Tb of the two rods 42A and 42B are increased, the bending moment Mr is increased, and the effect of providing the two rods 42A and 42B can be further improved.

  (g) The above-mentioned (a) to (f) can be realized in the joint joint 40 that uses the lower structure as the foundation 34 and joins the column 31 of the building structure 30 to the foundation 34.

Example 3 (FIG. 7)
As shown in FIG. 7, the building structure 50 has a portal ramen structure in which the columns 51 and 51 arranged side by side are connected by a beam 52 that is rigidly joined to their upper ends. In the building structure 50, the column bases 51 </ b> A of the columns 51 and 51 are joined to the lower-floor building structure 70 by the column base joint connection 60. The lower-floor building structure 70 is a rigid frame structure in which a column 71 and a beam 72 are rigidly joined, and the column base 51A of the column 51 of the upper-floor building structure 50 is joined to the beam 72 by a column base joint 60. . Hereinafter, the configuration of the column base joint 60 will be described.

  The column base joint 60 is formed by rigidly connecting a flange 61A to the column base 51A, and this flange 61A serves as a base member 61 as a peripheral member rigidly connected to the column base 51A.

  The column base joint 60 is provided with a rod pair 62 composed of a combination of two rods 62 </ b> A and 62 </ b> B between the beam 72 and the base member 61. The two rods 62 </ b> A and 62 </ b> B have their lower ends pin-joined (or rigidly joined) to the beam 72, and their upper ends are pin-joined (or rigidly joined) to the base member 61. The distance between the upper ends of the two rods 62A and 62B is made smaller than the distance between the lower ends (the rods 62A and 62B are arranged so as to form a square shape with each other, and the upper end distance on the column 51 side is made narrower than the lower end distance on the beam 72 side. ). In the present embodiment, the shear front rod 62A along the direction of the horizontal shearing force Q1 acting on the column 51 is vertically disposed, and the shear rear rod 62B is tilted forward.

  The support mechanism of the building structure 50 by the column base joint joint 60 is substantially the same as the support mechanism by the column base joint joint 20 of the building structure 10. Therefore, a shearing force Q1 acts on the column 51 of the building structure 50, and the base member 61 is moved in the shearing direction by the shearing force Q1, so that the axial force Ta is applied to the two rods 62A and 62B. , Tb occurs, the bending moment Mr generated in the column base 51A (the rigid joint point with the base member 61) due to the axial forces Ta, Tb of the two rods 62A, 62B is a shear acting on the column 51. The direction is opposite to the bending moment Mc generated at the column base 51A (the rigid joint point with the base member 61) due to the force Q1. Note that a shearing force Q2 in the same direction as the shearing force Q1 acting on the column 51 (wall load, wind pressure, etc. corresponding to the lower half of the column 51) acts on the base member 61.

According to the present embodiment, the following operational effects can be obtained.
(a) The base member 61 is rigidly joined to the column base 51A, and a rod pair 62 comprising a combination of two rods 62A and 62B is provided between the beam 72 and the base member 61, and the two rods 62A and 62B The lower ends of the two rods 62A and 62B are joined together by joining the lower ends thereof to the beam 72 and joining the upper ends thereof to the base member 61. The axial forces Ta and Tb exert a bending moment Mr on the base member 61, and this bending moment Mr reduces deformation of the column 51 (displacement of the crossing angle between the column 51 and the beam 72) and minimizes deformation of the entire building. Act on.

  (b) When the shearing force Q1 acts on the column 51 of the building structure 50 and the axial forces Ta and Tb are generated on the two rods 62A and 62B, the axial forces Ta and Tb on the two rods 62A and 62B The bending moment Mr generated in the column base 51A is opposite to the bending moment Mc generated in the column base 51A due to the shearing force Q1 acting on the column 51. Therefore, the deformation of the column 51 due to the bending moment Mc and the deformation of the column 51 due to the bending moment Mr cancel each other, thereby reducing the deformation of the column 51 and minimizing the deformation of the entire building.

  (c) Since the deformation of the column 51 can be reduced by the bending moments Mr and Mc acting on the base member 61 as described in (a) and (b) above, the lower ends of the two rods 62A and 62B are rigidly joined to the beam 72. Without deformation, it is possible to reduce the deformation of the column 51 and minimize the deformation of the entire building even when the pins are simply joined.

  (d) By setting the bending moment Mr and the bending moment Mc to Mr = Mc, the column base 51A is rigidly connected to the beam 72 (the column base 51A does not rotate, and the intersection angle between the column 51 and the beam 72 is displaced). The deformation of the column 51 can be reduced.

  (e) By setting the bending moment Mr and the bending moment Mc to Mr> Mc, the column base 51A is returned to the opposite direction by Mr, and becomes a super-rigid joint state, and the column 51 is deformed as described above. d) can be less. The base member 61 moves in the shear direction.

  (f) A fulcrum reaction force Q exerted on the two rods 62A and 62B by the beam 72 by applying a shearing force Q2 in the same direction as the shearing force Q1 acting on the column 51 to the base member 61 Q = Q1 + Q2 , And consequently the axial forces Ta and Tb of the two rods 62A and 62B are increased, the bending moment Mr is increased, and the effect of providing the two rods 62A and 62B can be further improved.

  (g) The above-described (a) to (f) can be realized in the joint connection 60 that joins the lower structure as the beam 72 of the lower-floor building structure 70 and joins the column 51 of the upper-floor building structure 50 to the beam 72. .

(Example 4) (FIG. 8)
As shown in FIG. 8, the building structure 80 has a portal ramen structure in which four columns 81 arranged side by side are connected by beams 82 (ceiling beams) that are rigidly joined to their upper ends. The building structure 80 may be a structure in which the four columns 81 arranged side by side are connected together by beams (floor beams) that are rigidly joined to the lower ends thereof. In the plan view of FIG. 8, the building structure 80 is structured such that each column base 81 </ b> A is formed into a foundation or lower floor structure by the column base joints 83 and 84 on each of the long side and the short side crossing the column 81. Be joined. The column base joints 83 and 84 may have the same configuration as the above-described column base joints 20, 40, and 60, or a column base joint joint 120 described later.

Example 5 (FIG. 9)
9 is provided with a rod pair 90 composed of a combination of three rods 92A, 92B, and 92C between the lower structure and the column base (base member) 91A of the column 91. . The three rods 92 </ b> A to 92 </ b> C have their lower ends pin-joined (or rigidly joined) to the lower structure, and their upper ends are pin-joined (or rigidly joined) to the column base 91 </ b> A. The two rods 92A, 92B and the one rod 92C are positioned on the opposite sides of the column 91 with respect to the direction along the horizontal shearing force 9 acting on the column 91 in a plan view of the column customer joint 90A. The two rods 92 </ b> A and 92 </ b> B are positioned on the opposite side of the vertical plane including the shearing force 9 on the front side of the shearing along the direction of the horizontal shearing force 9 and are tilted backward. One rod 92 </ b> C is positioned in a forward tilted manner in a post-shear direction along the direction of the horizontal shearing force 9 and positioned in a vertical plane including the shearing force 9. The upper end interval between the two rods 92A and 92C is made smaller than the lower end interval, and the upper end interval between the two rods 92B and 92C is made smaller than the lower end interval.

  The support mechanism by the column base joint 90A is substantially the same as the support mechanism of the column base joints 20, 40, 60 described above.

Example 6 (FIG. 10)
The column base joint 90B shown in FIG. 10 is a rod pair 92 comprising a combination of four rods 92A, 92B, 92C, and 92D between the lower structure and the column base (base member) 91A of the column 91. Is provided. The four rods 92 </ b> A to 92 </ b> D have their lower ends pin-joined (or rigidly joined) to the lower structure, and their upper ends are pin-joined (or rigidly joined) to the column base 91 </ b> A. The two rods 92A and 92B and the two rods 92C and 92D are positioned on opposite sides of the column 91 with respect to the direction along the horizontal shearing force Q acting on the column 91 in a plan view of the column base joint 90B. The two rods 92A and 92B are positioned on the opposite side of the vertical plane including the shearing force Q on the front side of the shearing along the direction of the horizontal shearing force Q and are inclined backward. The two rods 92 </ b> C and 92 </ b> D are positioned on the opposite side of the vertical plane including the shearing force Q on the side in the post-shear direction along the direction of the horizontal shearing force Q.

  The upper end interval between the two rods 92A and 92C is made smaller than the lower end interval, and the upper end interval between the two rods 92B and 92D is made smaller than the lower end interval.

  The support mechanism by the column customer joint connection 90 </ b> B is substantially the same as the support mechanism of the column base joint connection 20, 40, 60.

Example 7 (FIG. 11)
The column base joint 100 shown in FIG. 11 has four rods 102A to 102D between the lower structure and the column base (base member) 101A of the column 101 standing at the corner of the building structure 100A. A rod pair 102 comprising a combination of the above is provided. The four rods 102 </ b> A to 102 </ b> D have their lower ends pin-joined (rigidly joined) to the lower structure, and their upper ends pin-joined (rigidly joined) to the column base 101 </ b> A. Each of the rods 102A to 102D is obliquely arranged in a radial downward direction that forms 45 degrees with respect to each side surface of the column base 101A from each corner of the column base 101A having a square cross section.

  The two rods 102A and 102B and the two rods 102C and 102D are opposite to each other across the column 101 in the plan view of the column base joint 100 with respect to the direction along the girder horizontal shearing force QA acting on the column 101. Positioned on. The two rods 102A and 102B are positioned on the opposite side of the vertical plane including the shearing force QA on the front side of the shear along the girder-direction horizontal shearing force QA. The two rods 102 </ b> C and 102 </ b> D are positioned forwardly so as to be positioned on opposite sides of the vertical plane including the shearing force QA in the post-shear direction along the direction of the horizontal shearing force QA. The upper end interval between the two rods 102A and 102D is made smaller than the lower end interval, and the upper end interval between the two rods 102B and 102C is made smaller than the lower end interval.

  The two rods 102B and 102C and the two rods 102A and 102D are opposite to each other across the column 101 in a plan view of the column base joint 100 with respect to the horizontal shearing force QB acting on the column 101. Positioned on. The two rods 102B and 102C are positioned on the opposite side of the vertical plane including the shearing force QB on the front side of the shear along the direction of the horizontal shearing force QB in the wife direction. The two rods 102A and 102D are positioned forwardly and positioned on opposite sides of the vertical plane including the shearing force Q in the post-shear direction along the direction of the horizontal shearing force QB. The upper end interval between the two rods 102A and 102B is made smaller than the lower end interval, and the upper end interval between the two rods 102C and 102D is made smaller than the lower end interval.

  The support mechanism by the column base joint 100 is substantially the same as the support mechanism of the column base joints 20, 40, 60 described above. The column base joint joint 100 includes the functions of the above-mentioned column base joint joints 83 and 84, and can cope with the girder direction horizontal shear force QA and the wife direction horizontal shear force QB.

  The embodiment of the present invention has been described with reference to the drawings. However, the specific configuration of the present invention is not limited to this embodiment, and even if there is a design change or the like without departing from the gist of the present invention. Included in the invention.

FIG. 1 is a schematic diagram illustrating a portal ramen structure according to the first embodiment. FIG. 2 is a front view showing a portal ramen structure. FIG. 3 is a schematic diagram showing the horizontal force acting on the column base joint. FIG. 4 is a schematic diagram showing the bending moment acting on the column base joint. FIG. 5 is a schematic diagram showing the structure of the ramen unit according to the second embodiment. FIG. 6 is a front view showing the structure of the ramen unit. FIG. 7 is a schematic diagram showing the portal ramen structure of Example 3. FIG. 8 is a schematic plan view showing the building structure of the fourth embodiment. FIG. 9 is a schematic diagram illustrating a column base joint according to the fifth embodiment. FIG. 10 is a schematic diagram illustrating a column base joint according to the sixth embodiment. FIG. 11 is a schematic diagram illustrating a column base joint according to the seventh embodiment.

Explanation of symbols

10, 30, 50, 80 Building structure (structure)
11, 31, 51, 81, 91, 101 Pillars 11A, 31A, 51A, 81A, 91A, 101A Pillar bases 13, 34 Foundation (lower structure)
20, 40, 60, 83, 84, 90A, 90B, 100 Column base joints 22, 42, 62, 92, 102 Rod pairs 22A, 22B, 42A, 42B, 62A, 62B, 92A, 92B, 92C, 92D , 102A, 102B, 102C, 102D Rod 70 Lower floor building structure 72 Beam (lower structure)
Q1, Q2 Shear force Ta, Tb Axial force Mc, Mr Bending moment

Claims (6)

In a joint joint for joining a beam end of a structure, a column base, or a peripheral member rigidly joined thereto to another structure capable of receiving a bending moment via a supporting means,
The reaction force generated at the joint with other structures due to the external force acting on the beam or column causes the support means to be deformed due to a slight geometric movement within the elastic range. Alternatively , it is possible to generate a bending moment Mr that is opposite to the bending moment Mc generated at the beam end .
The support means comprises a combination of at least two rods;
These rods join one end to another structure and the other end to a beam end, a column base, or a peripheral member rigidly joined thereto,
One end and the other end of these rods are spaced apart from each other, and the other end interval is narrower than the one end interval. The joint according to claim 1 , wherein Mr = Mc. The joint according to claim 1 , wherein Mr> Mc. Wherein the peripheral member, which is rigidly joined to the column base, the bonding Joint according to claim 3 in which the shearing force in the same direction as the shear forces acting on the pillar is to act. Bonding Joint according to any of claims 1-4 other structures the column base or the peripheral members are bonded together via the support means is a basis. The column base or bonding Joint according to any of claims 1-4 other structures surrounding member is joined via a supporting means is a lower story building structure.

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