JP5374259B2 - Column joining member, column joining structure - Google Patents

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, and when the diameters of the upper and lower columns are different, it is used for joining the columns, is easy to manufacture, has excellent workability, and is located at the column installation position. It is an object of the present invention to provide a column joining member that can be handled by one kind of member and a column joining structure using the same.

In order to achieve the above-described object, the first invention is a member for joining columns, and is a flat plate member having smooth portions that can be joined to the columns on both sides, and at least one of the parts other than the smooth portions. A thinned portion is formed in which the thickness of the flat plate member is reduced from the surface side of the surface,
The column joining member is characterized in that a center position of the thinning portion is eccentric from a center position of the flat plate member.

  Here, the thinned portion refers to a portion in which the material constituting the joining member is hollowed out, such as a recess or a through hole hollowed out from one surface side. The center position of the thinned portion refers to the center position of the cross-sectional shape at an arbitrary position in the thickness direction of the joining member (excluding the opening shape on one surface).

  It is desirable that the eccentric distance of the thinned portion with respect to one direction of the flat plate member and the eccentric distance to the side orthogonal to the one side are substantially the same.

  The thinned portion may be a thin portion, or the thinned portion may be a through hole. The flat plate member may be rectangular, and the thinned portion may be an octagon having a side parallel to the side of the flat plate member. The boundary part between the smooth part and the thinned part may have a tapered shape in which the thickness is reduced.

  According to the first invention, the both sides have smooth portions that can be joined to the pillars, the thinned portion is formed, and the center of the thinned portion is eccentric from the center of the connecting member. Can be joined, and even when the position of the pillar is off center, the joint with the pillar is secured, and since it has a thinning part, the pillar joining member is lightweight and low cost Can be obtained.

  Further, the eccentric distance of the thinned portion is the same for one direction and another direction orthogonal to the one direction (for example, in the case of a rectangular flat plate member, each direction parallel to each side). In addition, 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. In addition, since the outer diameter difference between the upper and lower columns is approximately 50 to 150 mm, the maximum eccentricity is desirably 25 to 75 mm, which is half this.

  Further, if the thinned portion is a through-hole, a higher light weight effect can be obtained, and if the thin-walled portion is not used as a through-hole, higher strength can be obtained. If the shape of the thinned portion is an octagon having sides parallel to the respective sides of the flat plate member, the balance between the strength against the beam joined in the horizontal direction and the weight reduction is particularly high. Further, if a tapered portion is formed around the thinned portion, stress concentration does not occur, and thus higher strength can be obtained.

  A second invention uses a column joining member according to the first invention, a hollow first column is joined to the smooth portion of the lower surface of the first joining member, and the first joining member When the hollow second column having an outer diameter smaller than that of the first column is joined to the smooth portion on the upper surface, and the center of the second column coincides with the center of the first column, A first region of a flat plate member 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 first one side When the outer surface of the flat plate member coincides with the corresponding outer surface of the first column, a second region of the flat plate member corresponding to the hollow portion of the second column is formed, and the second column is Eccentric to one side with respect to the first column, the outer surface of the first one side is aligned with the corresponding outer surface of the first column, and is orthogonal to one side When the second column is eccentric with respect to the first column in a direction and the outer surface on the other side of the second column is aligned with the corresponding outer surface of the first column, Column joining characterized in that a third region of the flat plate member corresponding to the hollow portion of the second column is formed, and a thinned portion is formed in a common part of the first to third regions. Structure.

  A second joining member is provided below the first pillar, and a lower end of the first pillar is joined to a smooth portion on an upper surface of the second joining member. A third column is joined to the smooth portion of the lower surface of the member, a first beam is joined so as to straddle a side surface of one side of the first and second joining members, and the first and second A second beam having a height different from that of the first beam is joined so as to straddle the side surface on the other side of the joining member, and the lower end of the first beam is near the lower end of the second joining member. And the lower end of the second beam may be joined in the vicinity of the upper end of the second joining member.

  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 position of the thinned portion is the center of the upper and lower columns. The upper column interior (hollow part) in the case where they match, the upper column interior (hollow part) when the upper column is eccentrically aligned with one side surface of the lower column, and the upper column Is located in the same range as the interior (hollow part) of the upper column when it is eccentrically aligned with the corners (side surfaces in the two directions) of the lower column. No pillars are applied to the meat removal part. Therefore, it can be reliably joined to the column.

  Also, use a pair of joining members up and down, join the beam so that it spans the upper and lower joining members from one side, and install a beam with a different height from the previous beam so as to straddle the upper and lower joining members on the other side In this case, since the difference in height of each beam is absorbed by the thickness portion of the side surface of the joining member, beams having different heights can be joined.

  According to the present invention, when the upper and lower pillars have different diameters, the pillars are used for joining the pillars, are easy to manufacture, have excellent workability, and can be handled by one kind of member regardless of the installation position of the pillars. It is possible to provide a joining member and a pillar joining structure using the same.

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. It is the perspective view which shows the joining member 3, (a) is the figure seen from the upper surface direction, (b) is the figure seen from the lower surface direction. It is a figure which shows the joining member 3, (a) is a bottom view, (b) is the BB sectional view taken on the line (a), (c) is the CC sectional view taken on the line (a). The schematic diagram which shows arrangement | positioning of the pillar of the structure 25. FIG. The figure which shows arrangement | positioning of the pillar 5b with respect to the joining member 3. FIG. The figure which shows the positional relationship of arrangement | positioning of the pillar 5b with respect to the joining member 3, and the hole 13. FIG. Sectional drawing which shows joining member 3a, 3b. It is the perspective view which shows the joining member 40, (a) is the figure seen from the upper surface direction, (b) is the figure seen from the lower surface direction. It is a figure which shows the joining member 40, and is the JJ sectional view taken on the line of FIG. The figure which shows the joining structure 50 of a pillar using the joining member 40. FIG.

  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 a bonding member 3 is provided between the columns. The upper end of the column 5 a is bonded to the lower surface 17 of the lower bonding member 3, and the lower end of the column 5 b 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 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 columns 5a and 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.

  A beam 7 is joined in the horizontal direction to the column 5b in a range sandwiched between the pair of joining members 3. Therefore, the end portion of the flange portion of the beam 7 is joined to the side surface of the joining member 3, 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 (the length of the column 5 b) between the pair of upper and lower joining members 3 substantially matches the height of the beam 7. In addition, in order to avoid interference with the joining member 3, 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. FIG. 3 is a perspective view showing the joining member 3, FIG. 3A is a view seen from the upper surface side, and FIG. 3B is a view seen from the lower surface side. The upper surface 11 and the lower surface 17 of the joining member 3 are formed with smooth portions 9a and 9b that serve as joint portions with the columns 5a, 5b, and 5c. A hole 13 that has an opening 19 on the lower surface 17 side and penetrates to the upper surface 11 side is formed in a portion other than the smooth portions 9a and 9b. That is, the joining member 3 is a rectangular annular member.

  An opening 19 is formed on the lower surface 17 side of the joining member 3. The opening 19 has a rectangular shape, and has the same center position as that of the joining member 3. The shape of the opening 19 is changed according to the outer shape of the columns 5a and 5b to be joined. For example, if it is a column of a round cross section, it is good also as the circular opening part 19 according to this.

  The opening portion 19 is formed with a tapered portion 15 so as to reduce in diameter from the lower surface 17 toward the upper surface 11 side, and communicates with an octagonal hole 13 provided in the upper surface 11. That is, the tapered portion 15 is formed so as to connect each vertex of the opening 19 to two corresponding vertices of the octagon. The octagonal holes 13 are formed such that 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. The center position of the hole 13 is formed at a position eccentric from the center of the joining member 3 (that is, the center of the opening 19). The shape and arrangement of the holes 13 and the opening 19, the shape of the tapered portion 15 that connects them, the method of connecting the hole 13 and the opening 19, etc. are not limited to this, and are arbitrary as long as the effects of the present invention can be obtained. Can be set. 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.

  In addition, the smooth part 9b to which the column is bonded downward is a part other than the opening part 19 on the lower surface 17. Further, the smooth portion 9 a to which the column is joined upward is a portion other than the hole 13 on the upper surface 11.

  4A and 4B are views showing the positions of the holes 13. FIG. 4A is a bottom view of the joining member 3, FIG. 4B is a cross-sectional view taken along the line BB of FIG. 4A, and FIG. ) Is a cross-sectional view taken along line CC of FIG. In Fig.4 (a), the lines D and E show the centerline parallel to each edge | side of the joining member 3 of the joining member 3 (opening part 19). Lines F and G in FIG. 4A are center lines of the holes 13 parallel to the lines D and E, respectively.

  The hole 13 is formed so as to be shifted in one direction of the bonding member 3 (a direction parallel to the side of the bonding member 3, for example, the right side in the drawing) by the amount of eccentricity 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). In addition, the formation range of the hole 13 formed eccentrically does not protrude in the horizontal direction from the formation range of the opening 19 when viewed from the bottom surface of the joining member 3, and the hole 13 is located in the opening 19. Formed.

  As shown in FIG. 4 (b), the opening 19 to the hole 13 are connected by a tapered portion 15. However, since the arrangement of the hole 13 is eccentric from the opening 19, the inclination of the tapered portion 15 is one side. And the opposite side.

  Similarly, as shown in FIG. 4C, the opening 19 to the hole 13 are connected by a tapered portion 15, and the arrangement of the holes 13 is eccentric from the opening 19. On the other hand, the inclination of the tapered portion 15 is different between one side and the opposite side.

  Here, a portion where the material of the bonding member 3 is removed from the opening 19 side of the lower surface 17 toward the upper surface 11 side is referred to as a thinning portion 23. Therefore, the thinning portion 23 is opened on the lower surface side of the connection member 3, the periphery is formed by the tapered portion 15, and includes the hole 13 on the upper surface 11 side of the connection member 3. That is, the cross section of the connection member 3 in the thickness direction of the thinned portion 23 is formed in an octagon, and the center of the octagonal cross-sectional shape is eccentric from the center of the joining member 3.

  The amount of eccentricity (eccentric distance) of the thinning portion 23 gradually increases from the opening 19 of the lower surface 17 toward the upper surface 11 side. For this reason, in the vicinity of the upper surface 11, the amount of eccentricity of the thinned portion 23 is maximized. Since the eccentric amounts 21a and 21b described above are the eccentric amounts of the holes 13 in the upper surface 11, they are the maximum eccentric amount of the thinned portion 23.

  Next, the structure 25 using the connection member 3 will be described. FIG. 5 is a plan view showing the structure 25, the periphery is covered with an outer wall 27, and pillars 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.

  On the other hand, in the side column 31, the center of the column 5b (5a) below and the center position of the column 5c having a smaller outer diameter do not coincide with each other, and the column 5c is unidirectional with respect to the column 5b (5a). It is arranged eccentrically. 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 (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 (the outer wall 27 side) of the column 5b (5a) and is also eccentric by the same amount in a direction perpendicular thereto.

  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 thinning part 23 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. Note that the center line E of the joining member 3 and the center line of the column 5c coincide with each other in a direction (left and right direction in the drawing) perpendicular to the side where the side faces coincide.

  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 Eccentricity is eccentric by an amount 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. 7 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 31a and 31b 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. Note that the opening 19 on the lower surface 17 of the joining member 3 is formed in a column internal region of the column 5b provided below. That is, the center of the opening 19 coincides with the center of the joining member 3, and the size of the opening 19 is a size corresponding to the hollow shape of the column 5b.

  Since the hole 13 is formed in the common column inner region 39, the column 5c is arranged on the smooth portion 9a with respect to the column at any of the middle column 29, the side column 31, and the corner column 33, and the column 5c The installation position and the hole 13 do not overlap.

  In the above embodiment, the bonding member 3 having the opening on the lower surface 17 side and the hole 13 penetrating toward the upper surface 11 side has been described, but the present invention is not limited to this. For example, as in the joining member 3a shown in FIG. 8A, an octagonal thin portion may be formed instead of an octagonal hole that completely penetrates the joining member.

  In this case, the thinned portion 23 extends from the opening 19 to the thin portion on the upper surface side. The bonding member 3a has an opening 19 having the same structure as the bonding member 3, and a tapered portion 15 is formed toward the upper surface 11 side. In this case, a minimum range (formation region at a position closest to the upper surface 11 in the gradual thickness portion 23) in a cross section parallel to the column joint surface of the gradual thickness portion 23 is formed in the common column inner region 39 described above. Further, the (maximum) eccentricity between the center in the cross section of the minimum thinned portion and the center of the joining member 3a becomes the eccentricity 31a, 31b as described above. The strength can be further increased by providing the thin portion.

  Further, as shown in FIG. 8B, the tapered shape may not be provided. That is, the cross-sectional shape of the penetrating hole 13 may be the same shape as the opening 19 on the lower surface. In this case, the eccentric amounts 31a and 31b are constant at an arbitrary position in the thickness direction of the joining member 3b.

  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 slow-thickness part 23 is formed in a part unnecessary for strength, bonding, etc., unnecessary weight increase and cost increase can be prevented. Even if such a thinned portion 23 is formed, the joint portions with the pillars become the smooth portions 9a and 9b, so that there is no inconvenience in joining with the pillars.

  Moreover, since the cross-sectional shape of the slow-thickness portion 23 is an octagon having sides parallel to the respective sides of the connection member 3, the force from the horizontal direction on the joining member 3 (force from the beam 7) Stress transmission can be performed efficiently, and stress concentration does not occur.

  Next, the joining member 40 according to the second embodiment will be described. FIGS. 9A and 9B are views showing the joining member 40 according to the second embodiment. FIG. 9A is a perspective view seen from the upper surface side, and FIG. 9B is a perspective view seen from the lower surface side. FIG. 10 is a cross-sectional view taken along line JJ of FIG. Note that, in the following embodiment, components having the same functions and effects as those of the joining member 3 shown in FIG.

  The joining member 40 has substantially the same configuration as the joining member 3, but differs in that a rib 41 is formed on the outer peripheral portion of the joining member 40 downward. The rib 41 is formed in the same direction as the opening 19 from the end of the tapered portion 15 of the hole 13 in the column joining direction of the joining member 3. Here, the lower surface 17 of the joining member 40 becomes the lower surface of the rib 41. That is, on the upper surface 11 of the joining member 40, the portion other than the hole 13 becomes the smooth portion 9a joined to the column, and the lower surface 17 of the rib 41 becomes the smooth portion 9b.

  As shown in FIG. 10, similarly to the bonding member 3, the bonding member 40 also has a tapered portion 15 formed from the opening 19 and communicates with the hole 13 formed in the upper surface 11 of the bonding member 40. In addition, the rib 41 and the opening 19 are formed at the same center position as the center of the joining member 40, but from the opening 19, the gradual thickness portion 23 is gradually decentered, and becomes the maximum eccentric amount in the vicinity of the upper surface 11. The position of the hole 13 is formed in the common column inner region 39 described above.

  FIG. 11 is a view showing a column joining structure 50 using the joining member 40. The column bonding structure 50 is substantially the same as the column bonding structure 1, but the heights of the beams bonded through the columns are different.

  In the column bonding structure 50, columns 5a, 5b, and 5c are arranged in the vertical direction from below, and a bonding member 40 is provided between the columns. The upper end of the column 5a is bonded to the lower surface 17 (the lower surface of the rib 41) of the lower bonding member 40, and the lower end of the column 5b is bonded to the upper surface 11. Further, the upper end of the column 5b is joined to the lower surface 17 (lower surface of the rib 41) of the upper joining member 40. Further, the lower end of the column 5 c is joined to the upper surface 11 of the upper joining member 40.

  Beams 7a and 7b are joined to the column 5b in a range sandwiched between the pair of joining members 3 in the horizontal direction. Therefore, the end portions of the flange portions of the beams 7a and 7b are joined to the side surface of the joining member 40, and the end portions of the web portions of the beams 7a and 7b are joined to the side surface of the column 5b. In order to avoid interference with the joining member 40, upper and lower end portions (near the flange portions) of the web portions of the beams 7a and 7b are provided with notches.

  The beam 7a is lower than the beam 7b. For example, the beam 7a is 450 mm high and the beam 7b is 500 mm high. When it is necessary to join the beams 7a and 7b having different heights via the pillars as described above, the upper surface of the flange portion of the beam 7a having a lower height is substantially aligned with the upper surface 11 of the joining member 40 disposed above. To join. Moreover, it joins to the upper surface 11 vicinity of the joining member 40 which arrange | positions the flange part lower surface of the beam 7a below. The height of the pillar 5b is adjusted so as to have such a positional relationship.

  Similarly, the upper surface of the flange portion of the column 7b is joined so as to substantially match the upper surface 11 of the joining member 40 disposed above. Moreover, it joins to the lower surface 11 vicinity of the joining member 40 which arrange | positions the flange part lower surface of the beam 7b below. The height of the rib 41 may be adjusted according to the difference in height between the beams 7a and 7b. In addition, although the total thickness of the joining member 40 including the rib 41 is appropriately set according to the difference in the flange thickness and height of the beams to be joined, it may be approximately 50 to 100 mm.

  According to the connection part 40 concerning 2nd Embodiment, the effect similar to the joining member 3 can be acquired. In addition, since the rib 41 can secure the joint height with the beam, beams having different heights can be joined. Further, even if the rib 41 is provided, the thinned portion 23 is formed at an unnecessary portion, and therefore an unnecessary increase in weight and cost 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 hole 13 (the minimum part of the thinned portion 23 when no hole is formed) 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 1,50 ......... Column joining structure 3,40 ......... Joint member 5a, 5b, 5c ......... Column 7 ...... Beam 9 ......... Smooth part 11 ......... Top surface 13 ......... Hole 15 ... ...... Tapered portion 17 ............ Lower surface 19 ............ Opening portions 21 a, 21 b ............ Eccentric amount 23 ............ Decapitalized portion 25 ………… Structure 27 ………… Outer wall 29 ………… Center column 31 …… ... Side column 33 ......... Corner posts 35a, 35b, 35c ......... Column internal regions 37a, 37b ......... Eccentric amount 39 ......... Common column internal region 41 ......... Rib

Claims (8)

A member for joining columns,
On the flat plate member having smooth portions that can be joined to the pillars on both sides, the thinned portion is thinned in the direction of reducing the thickness of the flat plate member from at least one surface side of the portion other than the smooth portion. Formed,
A column joining member, wherein a center position of the thinning portion is eccentric from a center position of the flat plate member.   The column joining according to claim 1, wherein an eccentric distance of the thinning portion with respect to one direction of the flat plate member and an eccentric distance to a side orthogonal to the one side are substantially the same. Materials.   The column joining member according to claim 1, wherein the thinned portion is a thin portion.   The column joining member according to claim 1, wherein the thinning portion is a through hole.   The columnar member according to any one of claims 1 to 4, wherein the flat plate member is rectangular, and the thinning portion is an octagon having a side parallel to the side of the flat plate member. Materials.   6. The column joining member according to claim 1, wherein a boundary portion between the smooth portion and the thinning portion has a tapered shape in which a thickness is reduced. Using the member for joining columns according to any one of claims 1 to 7,
A hollow first column is bonded to the smooth portion on the lower surface of the first bonding member, and a hollow having a smaller outer diameter than the first column is bonded to the smooth portion on the upper surface of the first bonding member. The second pillar of
When the center of the second column coincides with the center of the first column, the first region of the flat plate member corresponding to the hollow portion of the second column is formed,
When the second column is decentered to one side with respect to the first column and the outer surface of the first one side is aligned with the corresponding outer surface of the first column, the A second region of the flat member corresponding to the hollow portion of the second pillar is formed;
Decentering the second column to one side with respect to the first column, aligning the outer surface of the first one side with the corresponding outer surface of the first column, and The second column is decentered with respect to the first column in a direction perpendicular to the side, and the outer surface on the other side of the second column is made coincident with the corresponding outer surface of the first column The third region of the flat plate member corresponding to the hollow portion of the second pillar is formed,
A pillar joining structure, wherein a thinned portion is formed at a common part of the first to third regions. A second joining member is provided below the first pillar,
The lower end of the first pillar is joined to the smooth portion on the upper surface of the second joining member,
A third column is joined to the smooth portion of the lower surface of the second joining member,
A first beam is joined so as to straddle a side surface of one side of the first and second joining members;
A second beam having a height different from that of the first beam is joined so as to straddle the side surface on the other side of the first and second joining members;
The lower end of the first beam is joined in the vicinity of the lower end of the second joining member, and the lower end of the second beam is joined in the vicinity of the upper end of the second joining member. Item 7. Column junction structure according to item 7

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