JP5594758B2 - Column joint structure - Google Patents

Description

  The present invention relates to a column joint structure that is used, for example, in a building structure or the like to connect vertically between upper and lower ends of a column member using a hollow steel pipe or the like.

  Conventionally, as a joint structure of a column member using a hollow steel pipe or the like, a temporary plate member 71 or 72 for temporary assembly as shown in FIGS. Most of the welded joint structures are formed by aligning the ends of the column members 74 and 75 and then joining the ends by welding (see, for example, the conventional example described in Patent Document 1).

  The temporary plate member 71 shown in the figure has a column member that is welded along the center line extending in the vertical direction of each width of each of the four peripheral surfaces of the column member 74 such as a square tubular steel pipe. 74, and the side edges of the circumferential member 4 surfaces of the upper end of the column member 75 such as a square tube-shaped steel pipe are joined to the column member 75 by welding along respective center lines extending in the vertical direction. The

  Then, the lower end portion of the column member 74 and the upper end portion of the column member 75 are abutted, and one or two temporary plate members 72 are placed on one side of the two temporary plate members 71 joined to the column members 74 and 75 respectively. Alternatively, they are arranged on both sides, and the temporary plate members 71 and 72 are fastened with bolts and nuts to fix each other (see FIG. 10).

  Thus, after the temporary assembly which aligns the horizontal cross-section direction between the column members 74 and 75 is completed, the end surfaces of the column members 74 and 75 are joined by welding W (see FIG. 10). ).

  However, such a joint structure using column member welding is affected by the weather such as wind and rain because the construction is performed on site, and a welding engineer is required for the welding operation. In addition, inspection of the welded portion is necessary after welding. Further, temporary plate members 71 and 72 for temporary assembly are required, and they protrude greatly to the outside of the column members 74 and 75. Therefore, they have to be melted and removed after welding between the column members 74 and 75. .

  For this reason, various joint structures using bolt joints using high-strength bolts, such as the embodiment described in Patent Document 1, have been proposed as joint structures that do not use welding. The joint structure of hollow column members using high-strength bolts for such joining provides a joining structure that does not use a temporary plate member for welding or temporary assembly, or the member used for joining is a column member. The purpose is to prevent it from projecting greatly to the outside.

JP-A-7-127142

  However, in such a joint structure using high-strength bolts for joining hollow column members, bolts must be inserted and fastened from the outside of the hollow column members. It is necessary to use a special bolt such as the stud bolt 25 shown in FIG.

  Moreover, it is necessary to attach a nut beforehand to the inner side of the column member to be joined or a joint member inside the column member, or to form a screw hole in the joint member inside the column member to be joined. When the bolt fastening operation is performed from the outside of the column members to be joined, there are a method of fastening the nut from the outside and a method of fastening the head of the bolt from the outside.

  When tightening the nut from the outside, the height of the nut is larger than the height of the head of the bolt, and the screw thread of the bolt needs an extra length that protrudes outward longer than the height of the nut. Therefore, there is still a problem that the fastening member protrudes greatly to the outside of the column member to be joined. Further, when the bolt head is tightened from the outside, there is a problem that if the inner nut is not fixed, the bolt and the nut rotate together and sufficient fastening cannot be performed.

  Also, in the construction of joint structures using such high-strength bolts, when using the bolts for this assembly as temporary bolts used for temporary fixing during temporary assembly, the bolts are often damaged. In this case, sufficient fastening cannot be performed. For this reason, as a general rule, it is impossible to use the bolt for this assembly for the temporary bolt. For this reason, it is necessary to perform an operation of replacing the temporary bolts with the main assembly bolts after assembling, and there is a problem that it takes time and effort.

  Therefore, in view of the above problems, the present invention is such that the joining member used for connecting between the ends of a pair of hollow column members whose ends to be joined are greatly protruded to the outside of the pillar member. It is an object of the present invention to provide a column joint structure that can easily prevent this.

In order to solve the above problems, the column joint structure according to the present invention is:
A first upper end portion that is integrally joined to a lower end surface of a hollow upper column member having an open end to be joined, and an end face of the end opposite to the end to be joined of the first upper end portion are continuous. A first joining member having a first lower end portion formed so that an outer dimension in the horizontal direction gradually increases from the upper end surface toward the lower end surface ;
A second lower end portion that is integrally joined to the upper end surface of the hollow lower column member that is open at the end to be joined, and the end surface of the end opposite to the end to be joined of the second lower end portion is continuous. A second joining member that is formed such that the outer dimension in the horizontal direction gradually increases from the lower end surface toward the upper end surface, and has a second upper end portion that is in surface contact with the first lower end portion;
By having a recess corresponding to the first lower end portion and the second upper end portion, the recess is pressed against the peripheral surfaces of the first lower end portion and the second upper end portion in a state of surface contact with each other, An upper column member and a pair of semi-annular members that enable the lower column member to be connected in the length direction are provided.

The column joint structure according to the present invention is
Convex taper surfaces are formed on the side surfaces extending from the upper end surface to the lower end surface of the first lower end portion and the second upper end portion,
The concave portions of the pair of semi-annular members are formed with concave tapered surfaces corresponding to the first lower end portion and the second upper end portion.

The column joint structure according to the present invention is
The horizontal outer dimensions of the lower end of the first lower end portion and the upper end of the second upper end portion are formed to be equal to the outer cross sectional dimensions of the upper column member and the lower column member at most. It is characterized by.

The column joint structure according to the present invention is
The upper column member and the lower column member are formed in a rectangular tube shape,
The contact surfaces of the ends of the pair of semi-annular members that are in contact with each other are arranged so as to coincide with the diagonal directions of the upper column member and the lower column member that are arranged with horizontal cross sections aligned with each other. It is characterized by this.

The column joint structure according to the present invention is
A plurality of screw fastening through holes are formed at positions corresponding to each other at the ends of the pair of semi-annular members that are in contact with each other,
The pair of semi-annular members are joined by fastening a screw between a bolt and a nut penetrating the through hole.

The column joint structure according to the present invention is
The first joining member and the second joining member have a hollow cross section in which an axial hole is opened around an axis in the vertical direction,
The thickness of the thinnest horizontal section of the first and second joining members is formed to be thicker than the thickness of the horizontal section of the upper column member and the lower column member. .

According to such a column joint structure of the present invention,
A first upper end portion that is integrally joined to the lower end surface of the hollow upper column member that is open at the end to be joined, and a portion that is farthest from the connecting cross-section portion of the first upper end portion protrudes outward. A first joining member having a first lower end portion formed in such a manner;
A second lower end portion that is integrally joined to the upper end surface of the hollow lower column member that is open at the end to be joined, and a portion that is farthest from the connecting cross-sectional portion of the second lower end portion protrudes outward. And a second joining member having a second upper end portion in surface contact with the first lower end portion,
By having a recess corresponding to the first lower end portion and the second upper end portion, the recess is pressed against the peripheral surfaces of the first lower end portion and the second upper end portion in a state of surface contact with each other, By providing a pair of semi-annular members that allow the upper column member and the lower column member to be connected in this length direction,
It is possible to easily prevent a joining member used for joining between the end portions of a pair of hollow pillar members whose end portions to be joined are projecting greatly from the outside of the pillar member.

Moreover, according to the column joint structure of the present invention,
Convex taper surfaces are formed on the side surfaces of the first lower end portion and the second upper end portion,
The concave portions of the pair of semi-annular members are formed with concave tapered surfaces corresponding to the first lower end portion and the second upper end portion, respectively.
Compared with the case where the side surfaces of the first lower end portion and the second upper end portion are not tapered, the load applied to the joining member can be prevented from being concentrated on a part of the joining member.

Moreover, according to the column joint structure of the present invention,
The outer dimensions in the horizontal direction of the first lower end portion and the second upper end portion formed so as to protrude outward from the first joint member and the second joint member are at most the upper column member and the By being formed equal to the outer dimensions of the horizontal section of the lower pillar member,
The extent to which the first and second joining members protrude outward in the horizontal direction of the upper and lower pillar members can be reduced.

Moreover, according to the column joint structure of the present invention,
The contact surfaces of the ends of the pair of semi-annular members that are in contact with each other are arranged so as to coincide with the diagonal directions of the upper column member and the lower column member that are arranged with horizontal cross sections aligned with each other. By
The extent to which the first and second joining members and the pair of semi-annular members protrude outward in the horizontal direction of the upper and lower pillar members can be reduced.

Moreover, according to the column joint structure of the present invention,
A plurality of screw fastening through holes are formed at positions corresponding to each other at the ends of the pair of semi-annular members that are in contact with each other,
The pair of semi-annular members are joined by screw fastening of a bolt and a nut penetrating the through hole.
Since the bolt and the nut can be fastened from the outside of the first and second joining members and the pair of semi-annular members, the operation can be facilitated.

Moreover, according to the column joint structure of the present invention,
The first joining member and the second joining member have a hollow cross section in which an axial hole is opened around an axis in the vertical direction,
The thickness of the thinnest horizontal section of the first joining member and the second joining member is formed to be thicker than the thickness of the horizontal section of the upper pillar member and the lower pillar member,
While being able to endure the load concerning a column joint structure, it can be made lightweight and the material to be used can be decreased.

It is a side view of the junction part of the upper and lower pillar members 44 and 45 which shows the column joint structure 10 which concerns on one embodiment of this invention. FIG. 2 is a cross-sectional view of the column joint structure 10 in FIG. It is a perspective view which shows the state before each edge part joining of the upper and lower pillar members 44 and 45. FIG. It is a figure which shows the upper joining member 41 in FIG. 1, FIG. 4 (a) is the side view, FIG.4 (b) is the bottom view. It is a figure which shows the lower joining member 42 in FIG. 1, Fig.5 (a) is the top view, FIG.5 (b) is the side view. It is a figure which shows the 1st semi-annular member 51 in FIG. 1, Fig.6 (a) is the side view, FIG.6 (b) is the front view, FIG.6 (c) is the bottom view. It is a figure which shows the 2nd semi-annular member 52 in FIG. 1, (a) is the side view, FIG.7 (b) is the front view, FIG.7 (c) is the bottom view. It is a decomposition | disassembly side view before joining of the column joint structure 10 in FIG. It is a decomposition | disassembly side surface half sectional view of the conventional column joint structure. It is an assembly side half sectional view of the conventional column joint structure.

Hereinafter, embodiments of a column joint structure according to the present invention will be specifically described with reference to the drawings.
FIGS. 1-8 is a figure referred in order to demonstrate the column joint structure 10 which concerns on one embodiment of this invention.

  As shown in FIGS. 1 and 2, the column joint structure 10 according to one embodiment of the present invention includes an upper joint member 41 (first joint member), a lower joint member 42 (second joint member), and a first joint member. It comprises a semi-annular member 51 and a second semi-annular member 52 (a pair of semi-annular members). The column joint structure 10 having such a configuration includes a lower end portion of an upper column member 44 and an upper end portion of a lower column member 45, each having an open end portion to be joined as shown in FIG. It is used to connect the gaps in the length direction.

  First, the upper joint member 41 has its upper end surface 41a (the upper end side in FIG. 4 (a)) in contact with the lower end surface 44a (see FIG. 3) of the upper column member 44 in advance in a factory or the like, and is integrated by welding. It is joined. Then, the lower joining member 42 has its lower end surface 42a (the lower end side in FIG. 5B) brought into contact with the upper end surface 45a (see FIG. 3) of the lower column member 45 in advance in a factory or the like, and integrated by welding. It is joined.

  As shown in FIG. 4, the upper joint member 41 has a hollow shape in which a large circular shaft hole 41 g is formed around the axis, and includes a joint portion 41 b (first upper end portion) and a truncated cone portion 41 c ( The first lower end portion) is integrally formed with any appropriate manufacturing method such as forging or casting.

  Since the joining portion 41b of the upper joining member 41 is abutted with and welded to the lower end surface 44a of the upper cylindrical member 44 at the upper end surface 41a, it is aligned with the outer shape of the lower end surface 44a of the upper pillar member 44. Further, the planar shape is the same as the lower end surface 44a of the upper column member 44, that is, rounded at the four corners, and has a substantially square plate portion 41h.

  Between the lower surface of the plate portion 41h of the upper joint member 41 and the upper end horizontal section of the truncated cone portion 41c, the outer dimension in the horizontal direction gradually increases from the upper end horizontal section toward the lower surface of the plate portion 41h. A tapered surface is formed.

  On the truncated cone part 41c of the upper joining member 41, a convex taper surface is formed in which the outer dimension in the horizontal direction gradually increases from the upper end horizontal section toward the lower end face 41e. A constricted portion 41d is formed between the convex tapered surface of the joint portion 41b and the convex tapered surface of the truncated cone portion 41c.

  Further, in the lower end surface 41e having the maximum horizontal dimension in the truncated cone part 41c, the horizontal dimension is formed so as not to be larger than the horizontal sectional dimensions of the upper column member 44 and the lower column member 45. ing.

  Further, the thickness of the horizontal section of the constricted portion 41 d of the upper joint member 41 is formed to be thicker than the thickness of the horizontal sections of the upper and lower column members 44 and 45.

  As shown in FIG. 1, the lower bonding member 42 is disposed below the upper bonding member 41, but the shape is exactly the same as the upper bonding member 41, and the upper bonding member 41 is turned upside down. The only difference is that they are arranged in However, for convenience of explanation, each part of the lower joining member 42 is given a reference numeral different from that of the upper joining member 41, and a different name is used depending on the part.

  That is, as shown in FIG. 5, the lower end surface 42a of the lower joining member 42 is opposite to the upper end surface 41a of the upper joining member 41 in FIG. 4, and the joining portion 42b (second lower end portion) is opposite to the joining portion 41b in FIG. The truncated cone part 42c (second upper end part) is in the truncated cone part 41c in FIG. 4, the constricted part 42d is in the constricted part 41d in FIG. 4, the upper end face 42e is in the lower end face 41e in FIG. 4, and the shaft hole 42g is in FIG. The plate hole 42g corresponds to the plate hole 41g of FIG.

  Next, as shown in FIGS. 1 and 2, the first semi-annular member 51 and the second semi-annular member 52 are each formed in a semi-annular shape, and both end portions of the first semi-annular member 51 are arranged from the circumferential direction. End portions 51a that are bent in the radial direction and projecting outward, and both end portions of the second semi-annular member 52 are bent in the radial direction from the circumferential direction and projecting outward, and the end portions 52a are When the surfaces come into contact with each other, the two half-ring portions other than the both end portions 51a and 52a are opposed to each other and are formed in an annular shape as a whole.

  In addition, as shown in FIGS. 6 and 7, (a) and (b), the end portions 51 a and 52 a have both end portions of the first semi-annular member 51 and the second semi-annular member 52, respectively. Three bolt holes 51b and 52b through which the headed bolts 54 are loosely inserted are used.

  As shown in FIGS. 6A and 6B, the inner peripheral surface of the first semi-annular member 51 is formed to have a cross section that is recessed in a “<” shape, and the upper joint member 41 is formed in the upper half thereof. A concave tapered surface 51c corresponding to the convex tapered surface of the truncated cone portion 41c (see FIG. 4) is formed, and the lower half of the inverted truncated cone portion 42c (see FIG. 5) of the lower joining member 42 is formed. A concave tapered surface 51d corresponding to the convex tapered surface is formed.

  Similarly to the first semi-annular member 51, as shown in FIGS. 7 (a) and 7 (b), the inner peripheral surface of the second semi-annular member 52 is also formed with a cross section recessed in a “<” shape. A concave tapered surface 52c corresponding to the convex tapered surface of the truncated cone part 41c of the upper joining member 41 is formed in the upper half, and the inverted truncated cone part 42c of the lower joining member 42 is formed in the lower half thereof. A concave tapered surface 52d corresponding to the convex tapered surface is formed.

  The first semi-annular member 51 and the second semi-annular member 52 are screw-fastened so that both end portions 51a and 52a are brought into contact with each other so as to be integrally connected, thereby forming the concave tapered surface 51c of the first semi-annular member 51, 51d and the concave tapered surfaces 52c, 52d of the second semi-annular member 52 surround the truncated cone part 41c of the upper joining member 41 and the inverted truncated cone part 42c of the lower joining member 42 having the corresponding convex tapered surfaces, The outer periphery can be pressed.

  Thus, the upper joint member 41 and the lower joint member 42 can be integrated, and the upper joint member 41 and the lower joint member 42 cooperate with the first and second semi-annular members 51 and 52 to The function of a column joint for connecting the member 44 and the lower column member 45 can be exhibited.

A procedure for connecting the end portions of the upper and lower column members 44 and 45 using the column joint structure 10 according to the embodiment of the present invention will be described below.
First, as shown in FIG. 8, the lower end surface 41 e of the upper joint member 41 welded to the upper column member 44 is brought into contact with the upper end surface 42 e of the lower joint member 42 welded to the lower column member 45.

  Next, the truncated cone part 41 c of the upper joining member 41 and the inverted truncated cone part 42 c of the lower joining member 42 are connected to the concave tapered surfaces 51 c and 51 d of the first semi-annular member 51 and the concave tapered surface 52 c of the second semi-annular member 52. , 52d are surrounded by the first semi-annular member 51 and the second semi-annular member 52 with the truncated cone part 41c of the upper joining member 41 and the inverted truncated cone part 42c of the lower joining member 42 sandwiched therebetween.

  As shown in FIG. 2, the end portion 51 a of the first semi-annular member 51 and the end portion 52 a of the second semi-annular member 52 are aligned, and a headed bolt 54 is inserted from one of the left and right sides. When the nut 56 is fastened to the tip screw part via a washer, the truncated cone part 41c of the upper joining member 41 and the inverted truncated cone part 42c of the lower joining member 42 are connected so as not to be separated in the vertical direction. Thereby, the upper pillar member 45 and the lower pillar member 46 are connected in the length direction.

  At this time, the surface where the end portion 51a of the first semi-annular member 51 and the end portion 52a of the second semi-annular member 52 are in contact with each other coincides with the diagonal direction of the columns of the upper column member 45 and the lower column member 46. By arranging in this way, it is possible to reduce the extent to which the end portions 51a and 52a protrude outward in the horizontal direction of the upper and lower column members 44 and 45.

  According to such a column joint structure 10 according to one embodiment of the present invention, the upper part used for connecting the end portions of the upper and lower column members 44 and 45 having a rectangular tube shape whose end portions to be joined are opened. It is possible to prevent the joining member 41 and the lower joining member 42, the first semi-annular member 51, and the second semi-annular member 52 from protruding greatly outward in the horizontal direction of the upper and lower pillar members 44 and 45.

  Further, according to the column joint structure 10 according to the embodiment of the present invention, the concave tapered surfaces 51c, 51d of the first semi-annular member 51 and the concave tapered surfaces 52c, 52d of the second semi-annular member 52 are provided. , The outer periphery of the truncated cone part 41c of the upper joint member 41 having the corresponding convex tapered surface and the inverted truncated cone part 42c of the lower joint member 42 can be surrounded and pressed.

  For this reason, the contact area between the upper joint member 41 and the semi-annular members 51 and 52 and the contact area between the lower joint member 42 and the semi-annular members 51 and 52 are increased, so that the upper joint member 41 and the lower joint member 42 are increased. Can be ensured. Moreover, since the convex taper is formed in each side surface of the truncated cone part 41c and the inverted truncated cone part 42c, compared with the case where the convex taper is not formed, the upper joint member 41 and the lower joint It is possible to prevent the load applied to the member 42 from being concentrated on a part of each joining member.

  Further, according to the column joint structure 10 according to the embodiment of the present invention, the fastening using the bolts and nuts of the first semi-annular member 51 and the second semi-annular member 52 is performed at the upper joint member 41 and the lower joint. This can be done from the outside of the member 42, the first semi-annular member 51 and the second semi-annular member 52. Therefore, work can be facilitated by using the present column joint structure 10 for connection between column members.

  In addition, according to the column joint structure 10 according to one embodiment of the present invention, the upper joint member 41 and the lower joint member 42 can be made hollow, so that the upper joint member 41 and the lower joint member 42 can be reduced in weight, and less material can be used.

  Further, according to such a column joint structure 10 according to one embodiment of the present invention, joint members are provided inside the upper and lower column members 44 and 45, or screw holes are formed in such joint members. Since there is no need to keep it, the work can be facilitated.

  In addition, according to the column joint structure 10 of the present invention, since all fastening operations using bolts and nuts can be performed from the outside, the operations can be facilitated and the bolts and nuts can rotate together. Can be easily prevented, and sufficient fastening can be performed.

  Moreover, according to such a column joint structure 10 according to an embodiment of the present invention, temporary assembly is performed at the time of enforcement like a conventional joint structure using high-strength bolts for connection between column members. Since this is not necessary, the operation can be facilitated.

  In the above-described embodiment, the case where the column member has a rectangular tube shape has been described. However, the present invention also applies to a case where a column member having a different cross section such as a cylindrical shape is used. Can be applied. In this case, the outer shape of each part such as the joint part 41b of the upper joint member 41 and the joint part 42b of the lower joint member 42 is changed to correspond to the column member, or the end parts 51a and 52a are walls. You may arrange | position in the position which does not collide with.

  In the above-described embodiment, the first semi-annular member 51 and the second semi-annular member 52 are members having the same shape, but members having slightly different shapes may be used.

  Moreover, in the said one Embodiment, although the headed bolt 54 which has a general shape was used, the headed bolt which can manage the tightening torque which has a torque management member in the head can also be used. Such a head bolt torque management member is broken and removed when the tightening torque of the head bolt exceeds a predetermined value.

  In the above embodiment, three bolt holes 51b and 52b for fastening the first semi-annular member 51 and the second semi-annular member 52 are formed at each end. -The number of the lower pillar members 44, 45 may be increased or decreased in response to a change in outer diameter size or wall thickness.

DESCRIPTION OF SYMBOLS 10 Column joint structure 41 Upper joining member 41b Joining part 41c Frustum part 41e Lower end surface 42 Lower joining member 42b Joining part 42c Reverse truncated cone part 42e Upper end surface 44 Upper pillar member 44a Lower end surface 45 Lower pillar member 45a Upper end surface 51,52 First and second semi-annular members 51a, 52a End portions 51b, 52b Bolt holes 51c, 51d, 52c, 52d Concave taper surface 54 Headed bolt 56 Nut 71, 72 Temporary plate member 74, 75 Column member W Welding

Claims (6)

A first upper end portion that is integrally joined to a lower end surface of a hollow upper column member having an open end to be joined, and an end face of the end opposite to the end to be joined of the first upper end portion are continuous. A first joining member having a first lower end portion formed so that an outer dimension in the horizontal direction gradually increases from the upper end surface toward the lower end surface ;
A second lower end portion that is integrally joined to the upper end surface of the hollow lower column member that is open at the end to be joined, and the end surface of the end opposite to the end to be joined of the second lower end portion is continuous. A second joining member that is formed such that the outer dimension in the horizontal direction gradually increases from the lower end surface toward the upper end surface, and has a second upper end portion that is in surface contact with the first lower end portion;
By having a recess corresponding to the first lower end portion and the second upper end portion, the recess is pressed against the peripheral surfaces of the first lower end portion and the second upper end portion in a state of surface contact with each other, A column joint structure comprising: a pair of semi-annular members that allow the upper column member and the lower column member to be coupled in the length direction. Convex taper surfaces are formed on the side surfaces extending from the upper end surface to the lower end surface of the first lower end portion and the second upper end portion,
2. The column joint structure according to claim 1, wherein concave portions of the pair of semi-annular members are formed with concave tapered surfaces corresponding to the first lower end portion and the second upper end portion. The horizontal outer dimensions of the lower end of the first lower end portion and the upper end of the second upper end portion are formed to be equal to the outer cross sectional dimensions of the upper column member and the lower column member at most. The column joint structure according to claim 1, wherein: The upper column member and the lower column member are formed in a rectangular tube shape,
The contact surfaces of the ends of the pair of semi-annular members that are in contact with each other are arranged so as to coincide with the diagonal directions of the upper column member and the lower column member that are arranged with horizontal cross sections aligned with each other. The column joint structure according to any one of claims 1 to 3, wherein A plurality of screw fastening through holes are formed at positions corresponding to each other at the ends of the pair of semi-annular members that are in contact with each other,
The column joint according to any one of claims 1 to 4, wherein the pair of semi-annular members are joined by screw fastening of a bolt and a nut penetrating the through hole. Construction. The first joining member and the second joining member have a hollow cross section in which an axial hole is opened around an axis in the vertical direction,
The thickness of the thinnest horizontal section of each of the first joining member and the second joining member is formed to be thicker than the thickness of the horizontal section of each of the upper column member and the lower column member. The column joint structure according to claim 5.

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