JP2011122397A - Joining member for column and joint structure of column - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a joining member for a column, used for joining columns when upper and lower columns are different in diameter, facilitating manufacture, coping with any installation position of the columns in one type of member, and preventing a mistake in installation direction in installation work to attain excellent workability; and to provide a joint structure of a column using the same. <P>SOLUTION: A column joining part 51 is formed at the upper surface 11 of the joining member 3. The central positions of a hole 13 and the column joining part 51 are formed in positions eccentric from the center of the joining member 3. That is, the center line of the column joining member 51 is substantially aligned with the center lines D, G of the hole 13. The hole 13 and the column joining member 51 are formed with an amount 21a of eccentricity in one direction of the joining member 3. Similarly they are formed with an amount of eccentricity 21b in the vertical direction of the eccentricity direction. The amount 21a of eccentricity and the amount 21b of eccentricity are substantially the same amount of eccentricity. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a column bonding member used for a column bonding portion of a structure using a steel pipe column and a column bonding structure using the column bonding member.

  Conventionally, in a structure using a steel pipe column, there is a portion where the column is joined in the vertical direction. In such a column joint, the outer diameters of columns to be joined vertically may be different. For example, the outer diameter of the upper column is smaller than the lower column. In such a case, there is a method using a taper-shaped bonding member between columns to be bonded.

  However, such a tapered member is difficult to manufacture. Further, since the tapered member and the upper and lower horizontal surfaces joined thereto are in contact with each other, the end surface of the backing metal, which is a plate-like member provided at the joint between the tapered member and the horizontal surface, and the horizontal surface are in surface contact. It is not line contact. For this reason, it is difficult to weld at this portion, which also causes poor welding. Therefore, simpler column joining structures having different outer diameters have been studied.

  As such a column joining structure, for example, a diaphragm is joined to the top and bottom of a frame-like column portion having at least one side tapered, and corresponds to the taper shape of the frame-like column so as to be flush with the side of the diaphragm. There is a connection column provided with a rib (Patent Document 1).

  Further, there is a metal part for a joint part having a joint part with a column on the upper and lower surfaces and a through-hole or the like having a trapezoidal cross-sectional shape at the center of a part joined to the pillar (Patent Document 2).

Utility Model No. 3053480 No. 7-51524

  However, the connection column of Patent Document 1 is perpendicular to the joint with the beam, but has a tapered side surface and is difficult to manufacture, and as described above, the upper and lower sides of the tapered side surface are difficult to manufacture. It is also difficult to join the end surface and the upper and lower horizontal surfaces.

  Moreover, the metal part for a joint described in Patent Document 2 does not have a tapered side surface and is easy to manufacture, but it cannot be said to be an optimal shape in consideration of variations in the positional relationship between the upper and lower columns. .

  For example, the columns joined up and down are not necessarily installed on the same axis. Therefore, when forming a through-hole etc. in a connection member, when a big hole is formed, there exists a possibility that a junction part with a pillar may be lost. On the other hand, if such a hole is eliminated, the connecting member has an unnecessarily strong strength, resulting in an increase in weight and cost. However, using different joining members for each joining position of the pillars is not desirable because it may cause management of members, installation errors, and the like.

  The present invention has been made in view of such problems. When the diameters of the upper and lower columns are different, the present invention is used for joining the columns, is easy to manufacture, and does not depend on the installation position of the columns. An object of the present invention is to provide a column joining member and a column joining structure using the same, which can be handled by members and do not mistake the installation direction in installation work, and have excellent workability.

  In order to achieve the above-described object, the first invention is a member for joining a pillar, and has a flat plate-like main body part whose both surfaces can be joined to the pillar, a hole penetrating the main body part, A column joint provided around the hole on one surface, and the center position of the hole is eccentric from the center position of the main body, and the center position of the column joint is the center of the hole The column joining member is substantially coincident with a position, and the column joining portion is eccentric with respect to the main body portion in the same direction as the hole.

  It is desirable that the eccentric distance of the hole and the column joint portion with respect to one side of the main body portion and the eccentric distance with respect to the other side orthogonal to the one side are substantially the same.

  It is desirable that the main body is rectangular and the hole has a substantially octagonal shape having a side parallel to the side of the main body.

  The column joint portion is rectangular, and the column joint portion has a convex shape or a concave shape with respect to a portion other than the column joint portion on the surface of the main body portion on the side where the column joint portion is provided. desirable.

  According to the first invention, the column junction is formed around the hole on one surface, and the center of the hole and the column junction is eccentric from the center of the connecting member. In addition, even when the position of the column is deviated from the center, since the joint portion with the column is secured and the hole is provided, it is possible to obtain a column bonding member that is lightweight and low in cost. In particular, since the column joint portion is eccentric in the same direction as the hole, the column is always positioned on the column junction portion even if the column junction position is decentered. For this reason, the direction of the member for column joining is not mistaken. In particular, if the column bonding portion is convex or concave with respect to the surface, the direction of the column bonding member can be reliably confirmed.

  In addition, the eccentric distance of the hole and the column joint portion with respect to the main body portion is in each of one direction and another direction orthogonal thereto (for example, in the case of a rectangular flat plate member, each direction parallel to each side). Therefore, the present invention can be applied to the case where the displacement of the joining positions of the upper and lower columns is one direction or two directions.

  Moreover, if the shape of the hole is an octagon having a side parallel to each side of the main body, the balance between the strength of the beam joined in the horizontal direction and the weight reduction is particularly high.

  The second invention uses the column joining member according to the first invention, the hollow first column is joined to the lower surface of the first joining member, and the upper surface of the first joining member is A hollow second pillar having an outer diameter smaller than that of the first pillar is joined, and the center of the second pillar coincides with the center of the first pillar with respect to the main body portion of the joining member. A first region corresponding to a hollow portion of the second column is formed, the second column is eccentric to one side with respect to the first column, and the second column When the position of the outer surface on one side matches the position of the corresponding outer surface of the first column, a second region corresponding to the hollow portion of the second column is formed, and the first region The second column is eccentric to one side with respect to the first column, and the position of the outer surface on the one side of the second column is the position of the corresponding outer surface of the first column. And the second column is decentered with respect to the first column on the other side orthogonal to one side, and the position of the outer surface on the other side of the second column is When matched with the position of the corresponding outer surface of the first pillar, a third region corresponding to the hollow portion of the second pillar is formed, and a common part of the first to third regions is formed. The column junction structure and the hole are formed in a column junction structure.

  According to the second invention, when the lower column is bonded to the center of the bonding member and the column having a smaller outer diameter than the lower column is bonded to the upper side, the positions of the holes coincide with the centers of the upper and lower columns. The upper column interior (hollow part), the upper column interior (hollow part) when the upper column is eccentric with one side surface of the lower column, and the upper column below Since it is provided in a common area with the inside (hollow part) of the upper column when it is made to coincide with the corner (side surface in two directions) of the column, Sufficient strength can be obtained without the pillar covering the hole. In addition, since the upper column is always disposed on the column joint, the direction of the bonding member is not mistaken, and the column can be reliably bonded to the column.

  According to the present invention, when the upper and lower pillars have different diameters, they are used for joining the pillars, can be easily manufactured, and can be handled with one kind of member regardless of the installation position of the pillars. It is possible to provide a column joining member excellent in workability and a column joining structure using the same without making a mistake in the installation direction.

The perspective view which shows the joining structure 1 of a pillar using the joining member 3. FIG. FIG. 2 is an elevation view showing the column joining structure 1 and is a cross-sectional view taken along line AA of FIG. 1. The perspective view which shows the joining member 3. FIG. It is a figure which shows the joining member 3, (a) is a top view, (b) Front view. The schematic diagram which shows arrangement | positioning of the pillar of the structure 25. FIG. The figure which shows arrangement | positioning of the pillar 5c with respect to the joining member 3. FIG. The figure which shows the positional relationship of arrangement | positioning of the column 5c with respect to the joining member 3, and the hole 13 and the column junction part 51. FIG. The perspective view which shows the joining member 40. FIG. It is a figure which shows the joining member 40, (a) is a front view, (b) is a bottom view. It is a figure which shows the joining member 40, (a) is the HH sectional view taken on the line of FIG.10 (b), (b) is the II sectional view taken on the line of FIG.10 (b), (c) is FIG. c) JJ sectional view taken on the line of c).

  Hereinafter, a column junction structure 1 according to an embodiment of the present invention will be described. FIG. 1 is a perspective view showing a column joining structure 1, and FIG. 2 is a cross-sectional view taken along line AA of FIG. In the column bonding structure 1, columns 5 a, 5 b, and 5 c are arranged in the vertical direction from below, and bonding members 3 a and 3 that are columns bonding members are provided between the columns. The upper end of the column 5a is bonded to the lower surface 17 of the lower bonding member 3a, and the lower end of the column 5b is bonded to the upper surface 11. Further, the upper end of the column 5 b is joined to the lower surface 17 of the upper joining member 3. Further, the lower end of the column 5 c is joined to the upper surface 11 of the upper joining member 3. The joining member 3a may be a normal flat plate-like joining member.

  The columns 5a and 5b are hollow square steel pipes having the same outer diameter. The column 5c is a hollow square steel pipe having a smaller outer diameter than the columns 5a and 5b. The joining member 3 is a rectangular flat plate member having an outer diameter slightly larger than the outer diameter of the column 5b. The joining member 3 is made of, for example, steel and is approximately 300 to 1000 mm square, but can be arbitrarily set depending on the outer diameter of the columns to be joined.

  The beam 7 is joined in the horizontal direction to the column 5b in a range sandwiched between the joining members 3 and 3a. Therefore, the end portion of the flange portion of the beam 7 is joined to the side surface of the joining members 3 and 3a, and the end portion of the web portion of the beam 7 is joined to the side surface of the column 5b. That is, the installation interval between the upper and lower joining members 3, 3 a (the length of the column 5 b) substantially matches the height of the beam 7. In addition, in order to avoid interference with the joining members 3 and 3a, the notch is provided in the upper-lower-end part (flange part vicinity) of the web part of the beam 7. FIG.

  Next, details of the bonding member 3 will be described. 3 is a front perspective view showing the joining member 3, FIG. 4 (a) is a plan view, and FIG. 4 (b) is a front view. The upper surface 11 and the lower surface 17 of the joining member 3 serve as joint portions with the columns 5a, 5b, and 5c. A hole 13 penetrating the main body is formed in the main body of the bonding member 3. That is, the joining member 3 is a rectangular annular member.

  The joining member 3 is provided with a hole 13 penetrating the upper and lower surfaces. The holes 13 are octagonal, and four sides are parallel to each side of the rectangular connecting member 3, and the remaining four sides are formed at an angle of approximately 45 degrees with respect to each side of the connecting member 3. In addition, the shape, arrangement | positioning, etc. of the hole 13 are not restricted to this, It can set arbitrarily in the range which can acquire the effect of this invention. For example, the shape of the hole 13 may be a shape other than an octagon, and each side of the hole 13 and each side of the connection member 3 may not be parallel.

  A column bonding portion 51 is formed on the upper surface 11 side of the bonding member 3. The column joint portion 51 is formed in a substantially rectangular shape around the hole 13 and becomes a convex portion with respect to the upper surface 11. Note that the portion where the column is joined downward is a portion other than the hole 13 on the lower surface 17. Further, the portion where the column is joined upward is a portion other than the hole 13 on the upper surface 11 and is within the range of the column joint portion 51.

  Next, the positions of the hole 13 and the column joint portion 51 will be described. In FIG. 4A, lines D and E indicate center lines parallel to the respective sides of the joining member 3. The lines F and G in FIG. 4A are the center lines of the hole 13 and the column junction 51 that are parallel to the lines D and E, respectively. As shown in FIG. 4A, the center position of the hole 13 and the column joint portion 51 is formed at a position eccentric from the center of the joint member 3. That is, the center line of the column joining member 51 substantially coincides with the center lines D and G of the hole 13.

  The hole 13 and the column joining portion 51 are formed so as to be shifted in one direction of the joining member 3 (a direction parallel to the side of the joining member 3, for example, the right side in the drawing) by the eccentric amount 21 a. Similarly, it is formed by being shifted by an eccentric amount 21b in a direction perpendicular to the eccentric direction (for example, upward in the figure). The amount of eccentricity 21a and the amount of eccentricity 21b are substantially the same amount of eccentricity (eccentric distance).

  Next, the structure 25 using the connection member 3 will be described. FIG. 5 is a schematic plan view showing the structure 25, the periphery is covered with an outer wall 27, and columns 5b (5a) are installed at predetermined intervals. The columns 5b (5a) are connected by a beam 7. In FIG. 5, the connection member 3 and the like are not shown for simplicity. A column 5c having an outer diameter smaller than that of the column 5b (5a) is installed on the column 5b (5a) installed below.

  Here, a column at a portion where the beam 7 is joined in four directions is referred to as a middle column 29. Further, a column at a portion where the outer wall 27 is formed on one side is referred to as a side column 31. A column formed at the corner of the structure 25 and having the outer wall 27 formed in two directions is referred to as a corner column 33.

  In the middle column 29, the beam 7 is joined to both the vertical and horizontal directions in the horizontal direction, and the column 5c is arranged concentrically with respect to the column 5b (5a). That is, the center of the lower column 5b (5a) and the center position of the column 5c having a smaller outer diameter coincide.

  In contrast, in the side column 31, the center of the lower column 5b (5a) and the center position of the column 5c having a smaller outer diameter do not coincide with each other, and the column 5c is in one direction with respect to the column 5b (5a). They are arranged eccentrically (for example, upward in the figure). The column 5c is eccentric to the outer wall 27 side, and is disposed such that the side surface of the column 5b (5a) on the outer wall 27 side and the side surface of the column 5c on the outer wall 27 side are at the same position. That is, the pillar 5c is eccentric to one direction side (the outer wall 27 side) of the pillar 5b (5a), and is not eccentric to a direction perpendicular to the eccentric direction (for example, the left-right direction in the figure).

  On the other hand, the corner pillar 33 is eccentric in each direction of the outer wall 27 in contact with the two directions. The columns 5c are eccentric to the respective outer walls 27, and are arranged such that the side surfaces of the columns 5b (5a) on the outer wall 27 side and the corresponding side surfaces of the columns 5c on the outer wall 27 side are at the same position. That is, the column 5c is eccentric to one side (for example, the upper outer wall 27 side in the drawing) of the column 5b (5a) and is also eccentric by the same amount in a direction perpendicular thereto (for example, the right outer wall 27 side in the drawing). To do.

  6 is a plan sectional view showing the arrangement of the pillars 5c with respect to the pillars 5b at the respective pillar positions. FIG. 6 (a) shows the middle pillar 29, FIG. 6 (b) shows the side pillar 31, and FIG. It is a figure which shows the state of the corner pillar 33. FIG. In addition, in each figure, illustration of the hole 13 etc. of the joining member 3 is abbreviate | omitted.

  As shown in FIG. 6A, in the middle pillar 29, the joining member 3 is installed on the pillar 5 b, and the pillar 5 c is installed at the center of the upper surface 11 of the joining member 3. Therefore, the center lines D and E of the joining member 3 coincide with the center line of the column 5c. Note that the center of the column 5b installed below the joining member 3 coincides with the center of the joining member 3 in any arrangement. Here, a region corresponding to the hollow portion of the column 5 c on the upper surface 11 of the joining member 3 is referred to as a column internal region 35 a. That is, the column internal region 35 a also coincides with the center of the joining member 3.

  On the other hand, as shown in FIG. 6B, in the side column 31, the one side surface (upper in the drawing) of the lower column 5 b and the one side surface of the upper column 5 c (in the drawing) with the joining member 3 interposed therebetween. It is installed so that (upper) matches. Therefore, the center line D of the joining member 3 and the center line H of the column 5c are eccentric by the eccentric amount 37a. In the direction perpendicular to the side where the side surfaces coincide (the left-right direction in the figure), the center line E of the joining member 3 coincides with the center line of the column 5c.

  Usually, the different-diameter columns installed above and below the joining member 3 often have different outer diameters of about 50 mm to 150 mm. Therefore, the eccentric amount 37a is approximately 25 mm to 75 mm. Here, a region corresponding to the hollow portion of the column 5c on the upper surface 11 of the joining member 3 is defined as a column internal region 35b. That is, the column inner region 35b is also eccentric from the center of the joining member 3 by the eccentric amount 37a.

  Similarly, as shown in FIG. 6C, in the corner column 33, one side surface (upper in the drawing) of the lower column 5 b and one side surface of the upper column 5 c (upper side) with the joining member 3 interposed therebetween. Furthermore, the side of the column 5b (right side in the figure) and the side of the upper column 5c (right side in the figure) are also installed in the direction perpendicular to the right side (right side in the figure). ) To match. Therefore, the center line D of the joining member 3 and the center line H of the column 5c are eccentric by an eccentric amount 37a, and the center line E of the joining member 3 orthogonal to the center line D and the center line I of the column 5c are It is decentered by the amount of eccentricity 37b.

  As described above, since the different-diameter columns usually installed on the upper and lower sides of the joining member 3 are often different in outer diameter by about 50 mm to 150 mm, the eccentric amount 37b is approximately 25 mm to 75 mm in the same manner as the eccentric amount 37a. It becomes. The eccentric amount 37a and the eccentric amount 37b are substantially the same amount. Here, a region corresponding to the hollow portion of the column 5c on the upper surface 11 of the joining member 3 is defined as a column internal region 35c. That is, the column inner region 35 c is also eccentric from the center of the joining member 3 by the eccentric amounts 37 a and 37 b.

  FIG. 7A is a diagram illustrating a state in which the column inner regions 35a, 35b, and 35c in the middle column 29, the side column 31, and the corner column 33 are overlapped. A region where the column inner regions 35 a, 35 b, and 35 c overlap is a common column inner region 39. In other words, the common column inner region 39 is a region located inside the hollow portion of the column 5c, regardless of the arrangement of the columns 5c at any position of the middle column 29, the side columns 31, and the corner columns 33.

  The hole 13 is formed in the common column inner region 39 of the joining member 3. That is, the eccentric amounts 38a and 38b between the center of the joining member 3 and the center of the hole 13 coincide with the eccentric amounts 37a and 37b of the column inner region.

  Since the hole 13 is formed in the common column inner region 39, the column 5c is on the main body portion (a flat portion other than the hole 13) with respect to the column at any position of the middle column 29, the side column 31, and the corner column 33. The installation position of the pillar 5c and the hole 13 do not overlap.

  In addition, the column joint portion 51 is formed in a range including the installation range (and welding allowance) of the columns 5c arranged in all of the middle columns, the side columns, and the corner columns. Therefore, the pillar 5 c is joined to the joining member 3 at the pillar joint portion 51 regardless of the arrangement of the pillars 5 c.

  In addition, although the above Example demonstrated the joining member 3 which has the hole 13 which penetrates a main-body part, this invention is not limited to this. For example, an octagonal thin portion may be formed instead of an octagonal hole that completely penetrates the joining member.

  FIG. 7B is a view of the joining member 3 as viewed from the front, and is a view showing the installation positions of the lower column 5b and the upper column 5b. When the pillar 5c is an arrangement of the middle pillar (S in the figure), the pillar 5c is located on the pillar joint portion 51. Therefore, the pillar 5 b is joined to the pillar joint portion 51. On the other hand, when the column 5c is arranged eccentrically, such as a side column and a corner column, the column 5c is arranged shifted in the eccentric direction (T in the figure). Even in this case, the column 5 c is located on the column joint 51. The column joint portion 51 is formed in a range slightly wider than the columns 5c arranged in any of the middle column, the side columns, and the corner columns, and a welding allowance with the columns 5c is secured.

  On the other hand, when the direction of the joining member 50 is wrong, the column 5c is arranged so as to be shifted in the opposite direction to the eccentric direction of the hole 13 or the like (U in the figure). In this case, the column 5c is detached from the column junction 51. For this reason, a gap is generated between the column 5 c and the bonding member 50. Therefore, the operator can grasp that the direction of the joining member 50 is not correct. This is because if the orientation of the joining member 50 is wrong, the strength of the joining member 50 is insufficient depending on the arrangement of the columns 5c. In addition, as height of the column junction part 51, a clearance gap should just be recognized visually and what is necessary is just about 2 mm-5 mm.

  According to the connection part 3 concerning this Embodiment, the same-shaped joining member 3 can be used with respect to the pillar 5c in any position of the middle pillar 29, the side pillar 31, and the corner pillar 33. FIG. For this reason, it is not necessary to change a joining member with an installation position, and it can respond by the member of the same shape.

  Moreover, since the hole 13 is formed in a portion unnecessary for strength, bonding, etc., unnecessary weight increase and cost increase can be prevented. Further, even if such a hole 13 is formed, there is no inconvenience in joining with the pillar because it does not overlap with the joint with the pillar.

  Further, since the shape of the hole 13 is an octagon having sides parallel to each side of the connecting member 3, the stress is efficiently applied to the horizontal force (force from the beam 7) to the joining member 3. Transmission can be performed, and stress concentration does not occur.

  In addition, since the column joint portion 51 is formed in the installation range of the column 5c on the upper surface 11, the installation range of the column 5c is clarified, and the bonding member 50 can be prevented from being installed in the wrong direction. For this reason, it is possible to prevent damage or the like of the joining member 50 due to the column 5c being installed at an incorrect position with respect to the installation direction of the joining member 50.

  Next, the joining member 40 according to the second embodiment will be described. 8A and 8B are views showing the joining member 40 according to the second embodiment, in which FIG. 8A is a front view and FIG. 9B is a bottom view. 10 is a cross-sectional view of the joining member 40, FIG. 10 (a) is a cross-sectional view taken along the line H-H in FIG. 9 (b), and FIG. 10 (b) is a cross-sectional view taken along the line I-- in FIG. I line sectional drawing and FIG.10 (c) are JJ sectional views taken on the line of FIG.9 (b). Note that, in the following embodiment, components having the same functions and effects as those of the joining member 3 shown in FIGS. 3 to 4 are assigned the same reference numerals as in FIGS.

  The joining member 40 has substantially the same configuration as the joining member 3, but is different in that a convex portion 41 is provided. A convex portion 41 is formed around the hole 13 on the lower surface 17 side of the bonding member 40. Note that the portion where the column is joined downward is a portion other than the convex portion 41 on the lower surface 17. Moreover, since the convex part 41 is smaller than the hollow part of the pillar 5b (5a) joined to the lower surface, the convex part 41 fits in the hollow part of the pillar 5b (5a) in the state joined to the pillar.

  As shown in FIG. 9B, the convex portion 41 has a rectangular shape, and the convex portion 41 is formed in an annular shape around the hole 13. Further, the center of the convex portion 41 (center with respect to the outer peripheral portion of the convex portion 41) and the center position (D, E in the figure) of the main body portion of the joining member 40 substantially coincide. In addition, the shape of the convex part 41 is changed according to external shapes, such as the pillars 5a and 5b to join. For example, if it is a column of a round section, it is good also as the circular convex part 41 according to this. Further, the formation range of the eccentrically formed hole 13 does not protrude in the horizontal direction from the formation range of the convex portion 41 when viewed from the bottom surface of the joining member 3, and the hole 13 is located in the convex portion 41. Formed.

  Further, as shown in FIG. 9B, the center of the hole 13 (F and G in the figure) is also eccentric with respect to the convex portion 41 in the same manner as the main body portion (eccentric amounts 21a and 21b). The width of 41 is different on each side of the hole 13. The corner portion (upper right direction in the figure) closest to the angular direction of the convex portion 41 due to the eccentricity of the hole 13 is defined as a convex corner portion 41a, and conversely, the corner portion farthest away (lower left direction in the drawing) Let it be a part 41b, and let the other two corners be convex corners 41c.

  As shown in FIG. 10, the convex corner portions 41a, 41b, 41c have different heights (height from the lower surface 17). The convex corner 41a closest to the hole 13 has the lowest height (M in the figure), then the convex corner 41b is low (K in the figure), and the convex corner 41c has the highest height (L in the figure). ). This is because the stress applied varies depending on the portion of the joining member 40 as the position of the column 5c provided on the upper surface of the joining member 40 is decentered. For example, when the column 5c is decentered in the upper right direction (corner column) in the drawing, the upper right corner (the convex corner 41a side) of the column 5c matches the position of the corner of the column 5b below the joining member 40. That is, the force from the column 5 c is efficiently transmitted to the column 5 b, and no large stress is generated in the vicinity of the hole 13 of the joining member 40. For this reason, the height of the convex part 41 can be made low.

  In contrast, the convex corner portions 41b and 41c are given more stress depending on the position of the column 5c. Therefore, the height of the convex corners 41b and 41c is increased according to the magnitude of the stress. In addition, between the convex-angle parts 41a, 41b, 41c in the convex part 41 is connected with the taper.

  According to the joining member 40 concerning 2nd Embodiment, the effect similar to the joining member 3 can be acquired. Moreover, since the convex part 41 is formed around the hole 13, it is possible to ensure the strength of a portion where stress around the hole 13 is likely to concentrate. In addition, by appropriately setting the heights of the convex corner portions 41a, 41b, and 41c, the portion where the stress is high is surely reinforced, and the portion where the stress is low is heightened so as not to have excessive strength. By making it low, unnecessary weight increase and cost increase can be prevented.

  As mentioned above, although embodiment of this invention was described referring an accompanying drawing, the technical scope of this invention is not influenced by embodiment mentioned above. It is obvious for those skilled in the art that various modifications or modifications can be conceived within the scope of the technical idea described in the claims, and these are naturally within the technical scope of the present invention. It is understood that it belongs.

  For example, the shape of the convex part 41 is not restricted to embodiment. Any other form may be used as long as a portion (convex portion) thicker than the periphery is formed so as to surround the periphery of the hole 13. In particular, if the strength of the convex corner portion where the stress is concentrated can be appropriately secured, only the convex corner portion may be thickened (high), and the thickness of the joint portion between the convex corner portions may be reduced.

  Moreover, the column junction part 51 should just be formed in the installation range of the column 5c, and may be concave shape instead of convex shape. Even in this case, it is possible to recognize that the orientation of the joining member is wrong by the column 5c rising from the recess to the upper surface 11. In addition, the column junction part 51 is not restricted to a rectangular shape as shown in FIG. For example, as shown in FIG. 7 (a), it is only necessary to be formed at the joining position of the pillars 5c according to the arrangement form of the pillars, and only the pillar 5c part (shaded hatched part) in FIG. Or a concave shape.

  Moreover, since a beam is joined to the side surface of a joining member, you may form a rib in the thickness direction in the outer peripheral part of a joining member. If the height of the rib is adjusted according to the difference in the height of the beams, the beams can be joined to the beams having different heights while being shifted to the upper surface side or the lower surface side of the ribs. In addition, although the total thickness of the joining member containing a rib is suitably set according to the difference in the flange thickness and height of the beam to join, it should just be about 50-100 mm in general. The shape of the hole 13 may be other than an octagon, for example, a rectangle or the like. However, considering the transmission of stress and the like, it is desirable that the shape has a side parallel to each side of the joining member, for example, a 4n square (a multiple of 4). Further, the cross-sectional shape of the column is not rectangular but may be circular or the like.

DESCRIPTION OF SYMBOLS 1 ......... Column joining structure 3, 40 ......... Joint members 5a, 5b, 5c ......... Column 7 ......... Beam 11 ......... Upper surface 13 ......... Hole 17 ......... Lower surfaces 21a, 21b ... ... Eccentric amount 25 .... Structure 27 ......... Outer wall 29 ......... Center pillar 31 ......... Side pillar 33 ......... Corner pillars 35a, 35b, 35c ......... Column inner regions 37a, 37b ......... Eccentricity Amount 38a, 38b ......... Eccentric amount 39 ......... Common column inner region 41 ......... Convex portions 41a, 41b, 41c ......... Convex corner portion 51 ......... Column junction

Claims (5)

A member for joining columns,
A flat plate-like body that can be joined to the pillars
A hole penetrating the main body,
A column joint provided around the hole on one surface of the main body;
Comprising
The center position of the hole is eccentric from the center position of the main body,
A column joining member, wherein a center position of the column joint portion substantially coincides with a center position of the hole, and the column joint portion is eccentric with respect to the main body portion in the same direction as the hole.   The eccentric distance of the hole and the column joint portion with respect to one side of the main body portion and the eccentric distance with respect to the other side orthogonal to the one side are substantially the same. Member for joining columns.   3. The column joining member according to claim 1, wherein the main body has a rectangular shape, and the hole has a substantially octagonal shape having a side parallel to the side of the main body. 4.   The column junction is rectangular, and the column junction is convex or concave with respect to a portion other than the column junction on the surface of the main body on the side where the column junction is provided. The member for joining columns according to any one of claims 1 to 3, wherein the member is a member for joining columns. Using the member for joining columns according to any one of claims 1 to 4,
A hollow first column is bonded to the lower surface of the first bonding member, and a hollow second column having an outer diameter smaller than that of the first column is bonded to the upper surface of the first bonding member. Joined and
For the main body of the joining member,
When the center of the second column coincides with the center of the first column, a first region corresponding to the hollow portion of the second column is formed,
The second column is eccentric to one side with respect to the first column, and the position of the outer surface on the one side of the second column is the position of the corresponding outer surface of the first column. The second region corresponding to the hollow portion of the second pillar is formed,
The second column is eccentric to one side with respect to the first column, and the position of the outer surface on the one side of the second column is the position of the corresponding outer surface of the first column. And the second column is decentered with respect to the first column on the other side orthogonal to one side, and the position of the outer surface on the other side of the second column is A third region corresponding to the hollow portion of the second pillar is formed when the position of the corresponding outer surface of the first pillar is matched,
The column junction structure, wherein the column junction and the hole are formed in a common part of the first to third regions.

Images