JP5730610B2 - 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 junction, the size of the columns to be bonded vertically may be different. For example, the size 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 with different sizes 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 to perform (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 upper and lower pillars have different sizes, the present invention is used for joining the pillars, is easy to manufacture, has excellent workability, and is located at the pillar 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 pillars, and has a substantially rectangular flat plate-like main body that can be joined to a pillar on both surfaces, and a concave shape on one surface of the main body. A first thin-walled portion formed, a second thin-walled portion formed in a concave shape on the other surface of the main body portion, and a substantially rectangular column joint provided to surround the first thin-walled portion And a rib formed so as to surround the periphery of the second thin portion, and a center position of the column joint portion substantially coincides with a center position of the first thin portion, and the column joint portion Is eccentric with respect to the outer periphery of the main body, and the eccentric distance of the column joint to one side of the main body is substantially the same as the eccentric distance to the other side orthogonal to the one side. And the second thin portion is eccentric in the same direction as the first thin portion, and the rib has a substantially rectangular bottom. And is a connecting member of the column, wherein the top portion is substantially circular.

  Each cross-sectional area of each corner of the rib with respect to the diagonal of the main body is preferably the largest on the side opposite to the eccentric direction of the second thin portion and the smallest in the eccentric direction.

In the surface on the side where the rib is provided, it is desirable that the range to which the column is connected is convex with respect to other portions excluding the rib and the second thin portion .

  According to the first invention, since the thin portion is formed in the portion where the strength is not required, a light and low cost member for joining the columns can be obtained. In addition, since the center of the thin portion is decentered from the center of the joining member, it is possible to join columns of different sizes up and down, and even when the position of the column is deviated from the center, the joint with the column is not Secured. In particular, the eccentric distance of the thin-walled portion with respect to the main body is the same for one direction and the other directions orthogonal thereto (for example, in the case of a rectangular flat plate member, each direction parallel to each side). For this reason, 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.

  Further, a rib is formed around the second thin portion that is eccentric in the same direction as the first thin portion, the bottom portion (base portion) of the rib is substantially rectangular, and the top portion is substantially circular. Can be properly reinforced, and there is no stress concentration.

  In particular, the cross-sectional area of each corner of the rib relative to the diagonal of the main body is the largest on the side opposite to the eccentric direction of the second thin portion and the smallest in the eccentric direction, thus preventing stress concentration. In addition, weight reduction can be achieved.

  Moreover, since the range to which the column is connected is convex with respect to other parts, the joining range is easy to understand, and the column and the joining member can be reliably joined.

  The second invention uses the column joining member according to the first invention, the column joining portion side of the column joining member is an upper surface, and the lower surface of the column joining member is a hollow first A pillar is joined, and a hollow second pillar smaller in size than the first pillar is joined to the upper surface of the joining member of the pillar, and the main part of the joining member of the pillar is When the center of the second column coincides with the center of the first column, a portion corresponding to the hollow portion of the second column is defined as a first region, and the second column is defined as the first column. When the second column is decentered to one side and the position of the outer surface on the one side of the second column matches the position of the corresponding outer surface of the first column, the second column A portion corresponding to the hollow portion of the second column is defined as a second region, the second column is eccentric to one side with respect to the first column, and the second column The position of the outer surface on the one side is made coincident with the position of the corresponding outer surface of the first column, and the second column is placed on the other side orthogonal to the one side. When the position of the outer surface on the other side of the second column matches the position of the corresponding outer surface of the first column, the hollow portion of the second column. The part corresponding to is a third region, and the first thin portion is formed from the first region to a common part of the third region.

  According to the second invention, when the lower pillar is joined to the center of the joining member, and the pillar having a smaller size than that of the lower pillar is joined to the upper part, the first thin portion matches the center of the upper and lower pillars. 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 being applied to the thin wall portion. Therefore, it can be reliably joined to the column. Here, the size of the column indicates the width of the column if the column is a rectangular section, and the outer diameter if the column is a circular section. In addition, the column smaller in size than the lower column means that the length of each side is shorter than the lower column if the column is substantially square, and the long side or short side if the column is substantially rectangular. It means that at least one of the sides is smaller than the lower pillar.

  According to the present invention, when the upper and lower pillars have different sizes, the pillars are used for joining the pillars, are easy to manufacture, have excellent workability, and can be handled with 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 a perspective view which shows the joining member 3, (a) is a back surface perspective view, (b) is a surface perspective view. It is a figure which shows the joining member 3, (a) is a front view, (b) A bottom view. It is a figure which shows the shape of the rib 12 of the joining member 3, (a) is a bottom view, (b) is the BB sectional drawing of FIG. 4, (c) is CC sectional drawing of FIG. The top view which shows the joining member 3. FIG. 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. It is the schematic which shows the positional relationship of arrangement | positioning of the pillar 5c with respect to the joining member 3, and the thin part 13b, (a) is a top view, (b) is a front view. The enlarged view of the column position mark 19. 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 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 17a of the lower bonding member 3a, and the lower end of the column 5b is bonded to the upper surface 11a. 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 of the same size. The column 5c is a hollow square steel pipe having a smaller size than the columns 5a and 5b. The joining member 3 is a rectangular plate-like member having a size slightly larger than the size of the pillar 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 size 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. 3A is a rear perspective view showing the joining member 3, and FIG. 3B is a front perspective view. As for the joining member 3, the column junction parts 15a and 15b of the main-body part which are substantially rectangular flat plate members become a junction part with the pillars 5b and 5c. A thin portion 13a is provided on the lower surface side (rear surface side) of the main body portion of the bonding member 3, and a thin portion 13b is provided on the upper surface side (front surface side). The thin-walled portions 13a and 13b are portions where the thickness is recessed with respect to other portions on each surface.

  On the lower surface 17 side of the joining member 3, ribs 12 are formed around the thin portion 13a. The rib 12 has a substantially rectangular shape on the main body side (the base side of the rib) and becomes a circular shape toward the rib tip side (the top side). Therefore, the thin part 13a becomes substantially circular. A column joint 15a is formed around the rib 12 on the lower surface 17. The column joint portion 15a is formed to be slightly thicker on the lower surface 17 than other portions. The column bonding portion 15a is a range bonded to the column on the lower surface side. The center lines of the column joint portion 15 a and the base portion (substantially rectangular portion) of the rib 12 coincide with the center line of the main body portion (outer shape) of the joining member 3.

  The column joint portion 15a has substantially the same rectangular shape as that of the main body portion, and a center mark 18a is provided at the center position on each side. The center mark 18a is a protrusion formed around the column joint portion 15a, and when joining the column to the column joint portion 15a, the center position of each side of the column and the position of the center mark 18a are matched. Thus, the column and the joining member 3 are prevented from being displaced and joined. When the column is joined to the lower surface, the rib 12 is positioned inside the hollow column.

  On the upper surface 11 side of the bonding member 3, a column bonding portion 15b is formed around the thin portion 13b. The column junction 15b is formed to be slightly thicker on the upper surface 11 than other parts. The column bonding portion 15 b is a bonding portion with a column bonded to the upper surface side of the bonding member 3. The substantially rectangular thin portion 13b is disposed at the approximate center of the column joint portion 15b.

  The column joint portion 15b has a rectangular shape substantially the same as the main body portion, and a center mark 18b is provided on each side. The center mark 18b is a protrusion formed around the column joint 15b. When the column is joined to the column joint 15b, the center position of each side of the column is aligned with the position of the center mark 18b. Thus, the column and the joining member 3 are prevented from being displaced and joined. The center mark 18b is formed at two locations on the same side on two adjacent sides of each side of the column joint portion 15b.

  A column position mark 19 is formed at a predetermined corner of the column joint 15b. Further, the column joint portion 15 b is arranged eccentrically with respect to the main body portion of the joining member 3. Details of the arrangement of the column joints 15b and the column position marks 19 will be described later.

  In addition, although column junction part 15a, 15b was formed so that it might each protrude with respect to another site | part, you may form it concerned so that the said part may be dented more thinly than another site | part.

  Next, details of the rib 12 will be described. 4A is a front view of the joining member 3, and FIG. 4B is a bottom view. As described above, the center position of the outer periphery of the base portion (substantially rectangular portion) of the rib 12 substantially coincides with the center position of the main body portion of the joining member 3. Here, in FIG. 4B, lines D and E indicate center lines parallel to each side of the main body portion of the joining member 3. Lines F and G in FIG. 4B are lines parallel to the lines D and E, respectively, and are the center lines of the thin part 13a (the circular thin part inside the circular shape at the top of the rib 12). As shown in FIG. 4B, the center position of the thin portion 13 a is formed at a position that is eccentric from the center of the joining member 3 (the center of the substantially rectangular portion at the base portion of the rib 12).

  The thin-walled portion 13a is 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 figure) by an eccentric amount 21a. Similarly, it is formed so as to be shifted by an eccentric amount 21b in a direction perpendicular to the eccentric direction (for example, downward in the figure). The amount of eccentricity 21a and the amount of eccentricity 21b are substantially the same amount of eccentricity (eccentric distance). That is, the column joint 15a, the base outer shape of the rib 12 and the top outer shape of the rib 12 excluding the thin portion 13a are located at the center of the main body, but only the thin portion 13a formed inside the rib 12 is the main body. Is formed eccentrically.

  5 is a diagram showing the shape of the rib 12 at each corner of the rib 12, FIG. 5 (a) is a bottom view, FIG. 5 (b) is a sectional view taken along the line BB of FIG. 4 (b), FIG.5 (c) is CC sectional view taken on the line of FIG.4 (b). That is, as described above, the thin-walled portion 13a is eccentric in one corner direction (lower right direction in the figure) of the main body portion of the joining member 3, and FIG. 5B is a cross-sectional view taken along a diagonal line in the eccentric direction. It is.

  The rib 12 is formed so as to surround the thin portion 13a. Since the thin portion 13a is eccentric, the thickness (width) of the rib 12 varies depending on the part. The rib 12 at the corner opposite to the eccentric direction (H portion in the figure) has a flat portion width K at the top, which is the thickest with respect to the width at other circumferential positions. On the other hand, the rib 12 at the corner (J portion in the figure) on the eccentric direction side becomes a notch 14, and the rib 12 is notched. When there is no notch 14, the width of the flat portion at the top of the rib (the wavy line portion in the figure) is M, which is the smallest with respect to the width at other circumferential positions.

  Similarly, FIG. 5C is a cross-sectional view taken along a diagonal line perpendicular to the eccentric direction. The rib 12 at each corner perpendicular to the eccentric direction (I portion in the figure) has a flat portion width L at the top, and is approximately halfway between the thickest portion K and the thinnest portion width M. That is, the cross-sectional area in each circumferential direction of the rib 12 is formed so as to gradually decrease from the side opposite to the eccentric direction toward the eccentric direction. Therefore, each cross-sectional area with respect to each diagonal line at each corner of the rib 12 is the largest on the side opposite to the eccentric direction of the thin-walled portion 13a and the smallest in the eccentric direction.

  Next, details of the column joint portion 15b will be described. FIG. 6 is a plan view of the joining member 3. Here, in FIG. 6, lines D and E indicate center lines parallel to the sides of the main body of the joining member 3, and lines N and O in FIG. 6 are lines parallel to the lines D and E, respectively. . As shown in FIG. 6, the center position of the thin portion 13 b is formed at a position eccentric from the center of the joining member 3.

  The thin portion 13b is 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 figure) by an eccentric amount 21c. Similarly, it is formed so as to be shifted by an amount of eccentricity 21d in a direction perpendicular to the eccentric direction (for example, downward in the figure). The eccentricity 21c and the eccentricity 21d are substantially the same eccentricity (eccentric distance). That is, the thin portion 13b and the column joint portion 15b are formed eccentrically with respect to the main body portion. Here, the eccentric direction (the lower right direction in the figure) of the thin portion 13b coincides with the eccentric direction of the thin portion 13a on the back surface. However, the amount of eccentricity is larger in the thin portion 13b than in the thin portion 13a.

  Here, column position marks 19 are formed at corners on one side in the eccentric direction (lower side in the figure) and on the opposite side (left side in the figure) of the other eccentric direction. Further, a center mark 18b is provided at the center position of the side of the column joint portion 15b with respect to the side of the column joint portion 15b in one eccentric direction (the lower side in the figure). Center marks 18b are provided at two positions, that is, a center position of the portion and a position shifted by an eccentric amount 21c.

  Further, with respect to the side of the column joint portion 15b in the other eccentric direction (right side in the figure), center marks 18b are provided at two locations, the center position of the side of the column joint portion 15b and the center position of the main body portion, On the opposite side, a center mark 18b is provided at the center position of the main body.

  Next, the structure 25 using the connection member 3 will be described. FIG. 7 is a schematic plan view showing the structure 25, the periphery of which 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. 7, illustration of the joining member 3 and the like is omitted for simplicity. On the column 5b (5a) installed below, a column 5c having a smaller size than the column 5b (5a) is installed.

  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. Further, a column formed at a corner of the structure 25 and where the outer wall 27 is 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 smaller column 5c coincide.

  On the other hand, in the side column 31, the center of the lower column 5b (5a) does not coincide with the center position of the smaller column 5c, and the column 5c is offset in one direction with respect to the column 5b (5a). They are arranged in a center (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.

  FIG. 8 is a plan sectional view showing the arrangement of the pillars 5c with respect to the pillars 5b at the respective pillar positions. FIG. 8 (a) shows the middle pillar 29, FIG. 8 (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 thin part 13b etc. of the joining member 3 is abbreviate | omitted.

  As shown in FIG. 8A, 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. 8 (b), in the side column 31, with the bonding member 3 interposed, one side surface (upper in the drawing) of the lower column 5b and one side surface of the upper column 5c (in the drawing) It is installed so that (upper) matches. Therefore, the center line D of the joining member 3 and the center line P 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 pillars of different sizes installed above and below the joining member 3 are often different in size by 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. 8C, in the corner column 33, the one side surface (upper side in the drawing) of the lower column 5b and the one side surface (upper side of the upper column 5c) 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 P 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 Q of the column 5c are It is decentered by the amount of eccentricity 37b.

  As described above, since the columns installed on the upper and lower sides of the joining member 3 are usually different in size by about 50 mm to 150 mm, the amount of eccentricity 37b is approximately 25 mm to 75 mm, similar to the amount of eccentricity 37a. 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. 9 is a diagram showing 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, and FIG. 9A is a diagram viewed from the upper surface 11 side. FIG. 9B is a view from the front side. As shown in FIG. 9A, 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 thin portion 13 b is formed in the common column inner region 39 of the joining member 3. That is, the amount of eccentricity 21c, 21d (FIG. 6) between the center of the joining member 3 and the center of the thin portion 13b coincides with the amount of eccentricity (the amount of eccentricity of the column 5c) 37a, 37b. Since the thin portion 13b is formed in the common column inner region 39, the installation position of the column 5c and the thin portion 13b do not overlap.

  The column joint portion 15b is formed in a range including the installation range (and the welding allowance) of the columns 5c in all arrangements of the middle column, the side columns, and the corner columns. Therefore, in any arrangement of the pillars 5c, the pillars 5c are joined on the pillar joints 15b. In addition, when the pillar 5c is joined at the position of the middle pillar, the position of the pillar 5c is aligned with the side opposite to the eccentric direction of the pillar joint portion 15b (the lower left direction in FIG. 9A). Since the center mark 18b (Z1 and Z2 in FIG. 6) is formed at the center position of the two sides (lower side and left side in the figure) in contact with the direction, the center position of the column 5c can be reliably aligned.

  Similarly, when the pillar 5c is joined at the position of the side pillar, the position of the pillar 5c is aligned with one side (upward in the figure) of the eccentric direction of the pillar joint portion 15b. Since the center mark 18b (Z3 and Z4 in FIG. 6) is formed at the center position of the side (upper side in the figure), the center position of the column 5c can be reliably aligned. When the column 5c is joined at the position of the corner column, the column 5c is aligned in the eccentric direction (upper right direction in the figure) of the column joint portion 15b, and at this time, two sides (Fig. Since the center mark 18b (Z5 and Z6 in FIG. 6) is formed at the center position on the middle upper right side), the center position of the column 5c can be reliably aligned.

  Further, as shown in FIG. 9B, when the pillar 5c is arranged in the middle pillar (S in the figure), the pillar 5c is located on the pillar joint portion 15b. Therefore, the pillar 5b is joined to the pillar joint 15b. 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 pillar 5c is located on the pillar joint 15b. Note that the column joint portion 15b 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 3 is wrong, the column 5c is arranged so as to be shifted in the opposite direction to the eccentric direction of the thin portion 13b (U in the figure). In this case, the column 5c is detached from the column junction 15b. For this reason, a gap is generated between the column 5 c and the joining member 3. Therefore, the operator can grasp that the direction of the joining member 3 is not correct. If the orientation of the joining member 3 is wrong, the strength of the joining member 3 is insufficient depending on the arrangement of the pillars 5c. In addition, as height of the column junction part 15b, a clearance gap should just be recognized visually and what is necessary is just about 2 mm-5 mm.

  Moreover, in order to confirm the installation direction of the joining member 3, the pillar position mark 19 is provided in the pillar joining part 15b. FIG. 10 is an enlarged view of a portion R in FIG. The column position mark 19 has a shape in which the outer shapes of the corners corresponding to the portions at the respective positions of the column 5c are overlapped when the column 5c is bonded at each of the bonding positions of the middle column position and the corner column position. Therefore, when joining the joining member 3 on the pillar 5b, if the orientation of the pillar position mark 19 is determined according to the position of the pillar 5c, the joining direction of the joining member 3 is not mistaken.

  According to the joining member 3 according to the present embodiment, the joining member 3 having the same shape can be used for the pillar 5c at any position of the middle pillar 29, the side pillar 31, and the corner pillar 33. 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. In addition, since the column joint portions 15a and 15b are formed in the range where the columns are connected, the junction positions of the columns are not mistaken.

  Further, since the thin portions 13a and 13b are formed in the portions unnecessary for strength, bonding, etc., unnecessary weight increase and cost increase can be prevented. Further, even if such thin portions 13a and 13b are formed, there is no inconvenience in joining with the pillars because they do not overlap with the joining parts with the pillars.

  Moreover, since the rib 12 is formed around the thin-walled portion 13a, the bottom (base) of the rib 12 is substantially rectangular, and the top is substantially circular, it is possible to appropriately reinforce the portion where stress is applied. It is possible to ensure the strength of a portion where stress around the thin portion 13a is likely to concentrate. In particular, since the thickness (width) of the portion where the thin portion 13a is decentered and stress is likely to concentrate is thicker than the other portions, the effect of improving the strength can be obtained, and the thickness of the other portions. Therefore, it is possible to reduce the weight and cost without securing an unnecessarily strong strength. Moreover, stress transmission can be performed efficiently and stress concentration does not occur.

  Further, since the column joint portion 15b is formed in the installation range of the column 5c on the upper surface and the column position mark 19 is further provided, the installation range of the column 5c is clarified and the direction of the joining member 3 is erroneously installed. Can be prevented. In particular, since the column position mark 19 corresponds to the outer shape of the corner of the column to which the column position mark 19 is bonded, the column bonding direction can be visually recognized more easily and more reliably than a simple protrusion or mark. For this reason, it is possible to prevent damage or the like of the joining member 3 due to the column 5c being installed at an incorrect position with respect to the installation direction of the joining member 3. Further, since the center mark 18b is provided, the joining position of the pillars is not shifted.

  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. It is understood that it belongs.

  For example, the shape of the column is not limited to the substantially square prismatic column as in the embodiment, and the present invention can be applied regardless of the column shape such as a substantially rectangular shape or a circular cross section. Moreover, although the center mark 18b mentioned above differs in the center mark used according to the position (middle pillar, side pillar, corner pillar) of the pillar joined, for example, the center mark for middle pillars (in FIG. 6) Z1, Z2), side column center marks (Z3, Z4 in FIG. 6), and corner column center marks (Z5, Z6 in FIG. 6) are set in different forms (shape, color, etc.). As a result, the joining position can be adjusted more reliably. Moreover, although the thin part 13b was made into the substantially rectangular shape, as long as this shape is in the range of a common pillar internal area | region, other shapes (for example, polygon etc.) may be sufficient.

1... Column connection structure 3. ... notches 15a, 15b ......... column joints 17, 17a ......... bottom surface 18, 18a ......... center mark 19 ......... column position marks 21a, 21b, 21c, 21d ......... eccentricity 25 ... ... Structure 27 ......... Outer wall 29 ......... Medium pillar 31 ......... Side pillar 33 ......... Corner pillars 35a, 35b, 35c ......... Column inner regions 37a, 37b ......... Eccentric amount 39 ......... Common Column interior area

Claims (4)

A member for joining columns,
A substantially rectangular flat plate-shaped main body that can be joined to the pillars on both sides;
A first thin portion formed in a concave shape on one surface of the main body portion;
A second thin portion formed in a concave shape on the other surface of the main body portion;
A substantially rectangular column joint provided to surround the periphery of the first thin portion;
A rib formed so as to surround the periphery of the second thin portion;
Comprising
The center position of the column joint portion substantially coincides with the center position of the first thin portion, and the column joint portion is eccentric with respect to the outer periphery of the main body portion,
The eccentric distance to one side of the main body portion of the column joint portion and the eccentric distance to the other side orthogonal to the one side are substantially the same,
The second thin portion is eccentric in the same direction as the first thin portion,
A member for joining columns, wherein the rib has a substantially rectangular bottom portion and a substantially circular top portion. Each cross-sectional area of each corner of the rib with respect to the diagonal of the main body is largest on the side opposite to the eccentric direction of the second thin portion, and is smallest on the eccentric direction. Item 2. The member for joining columns according to Item 1. The range to which the column is connected on the surface on the side where the rib is provided is a convex shape with respect to other portions excluding the rib and the second thin portion. The member for joining columns according to 2. Using the member for joining a pillar according to any one of claims 1 to 3,
The column bonding portion side of the column bonding member is an upper surface,
A hollow first column is bonded to the lower surface of the column bonding member, and a hollow second column smaller in size than the first column is bonded to the upper surface of the column bonding member. ,
For the main body portion of the column joining member,
When the center of the second column coincides with the center of the first column, the portion corresponding to the hollow portion of the second column is defined as 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. , The portion corresponding to the hollow portion of the second pillar as the second 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, the portion corresponding to the hollow portion of the second pillar is a third region,
The column junction structure according to claim 1, wherein the first thin portion is formed in a portion common to the third region from the first region.

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