JP4961277B2 - Connecting bracket and connecting structure of structural material and column - Google Patents

Description

  The present invention relates to a connection fitting used when a column is connected to a structural material, and a connection structure between the structural material and the column using the connection tool.

The thing of patent document 1 is known as an example of the connection structure which connects a pillar to a foundation. In this connection structure, when joining the pillar and foundation / foundation, all screw bolts are screwed into the tip end (lower end) of the pillar for a certain length, and the bolt fixing space below the foundation surface is located directly below the pillar. A portion is provided, all the screw bolts of the pillar are inserted through the base and the foundation, the tip is made to reach the space portion of the foundation and tightened, and the pillar and the base / foundation are tightly coupled.
JP-A-7-197526

However, in the above-mentioned conventional technology, for example, when a pillar is newly provided at the time of home renovation, etc., a hole reaching from the top surface of the foundation to the lower end of the foundation through the foundation and the foundation in order to insert all screw bolts of the pillar And a notch that reaches the lower end of the hole on the side of the foundation (a space for fixing the bolt) must be formed, so the task of forming this hole and notch is very laborious. there were.
In other words, in order to form a hole that reaches the bottom edge of the foundation from the top surface of the foundation, it is necessary to replace the drilling tool between the wooden foundation and the concrete foundation, and the hole is formed deeply to the bottom edge of the foundation. Because it is necessary to do, it takes a lot of work. In addition, the notch requires a work space for screwing a nut onto a bolt and tightening it, and it is very troublesome to form such a relatively large notch in concrete.

  The present invention has been made in view of the above circumstances, and it is an object of the present invention to provide a connection fitting that can easily and reliably connect a column to a structural material such as a foundation or a foundation, and a structure for connecting the structure and the column using the bracket. It is said.

In order to solve the above-mentioned problem, the invention described in claim 1 is a connecting fitting 1 used when connecting a column to a structural material, for example, as shown in FIGS.
A substantially rectangular parallelepiped metal fitting body 2 installed on the upper surface of the structural material (for example, the base 11) includes an upper structure 8 having a substantially U-shaped cross section and a lower structure 9 having a substantially U-shaped cross section.
The upper structure body 8 and the lower structure body 9 are welded by butting the front end portions of both side walls 2c, 2c of the upper structure body 8 and the front end portions of both side walls 2e, 2e of the lower structure body 9 together. Are formed, and the metal fitting body 2 having an open side surface orthogonal to the side walls 2c and 2e is formed,
The bottom wall 2a of the lower structure 9 is formed with an anchor insertion hole 3 through which the upper end of the anchor 12 protruding from the upper surface of the structural material is inserted,
A screw hole into which the lower end of a column support bolt 16 inserted into a column hole 15a formed in a column 15 standing on the upper surface of the upper wall 2b is screwed into the upper wall 2b of the upper structure 8 4 is formed.

  Here, examples of the structural material include a base, a fork, a column, a girder, and a beam. In this specification, the foundation is also one of the structural materials.

According to the first aspect of the present invention, the connection fitting 1 is installed on the upper surface of the structural member 11, and the upper end portion of the anchor 12 protruding from the upper surface of the structural member 11 is connected to the anchor insertion hole 4 of the connection fitting 1. After the insertion, the nut 13 b is screwed and tightened to the upper end of the anchor 12, whereby the connection fitting 1 can be fixed to the upper surface of the structural material 11 and can be firmly connected to the structural material 11. The nut 13b can be easily tightened by inserting a tool through the opening 5.
Further, a column 15 is erected on the upper surface of the coupling metal 1, and a column support bolt 16 screwed into the screw hole 4 of the coupling metal 1 is inserted into the column hole 15 a of the column 15, and the column hole 15 a By filling the adhesive 17 between the inner wall and the column support bolts 16, the columns 15 can be fixed to the connection fitting 1.
Therefore, the pillar 15 can be easily and easily formed on the structural member (foundation) 10 via the connecting metal fitting 1 without forming a deep hole extending from the upper surface of the foundation to the lower end of the foundation or a notch on the side surface of the foundation as in the prior art. It can be connected reliably.

  Further, the metal fitting body 2 is welded by butting the front end portions of the both side walls 2c, 2c of the upper structure 8 and the front end portions of the both side walls 2e, 2e of the lower structure 9 so as to be welded. And the lower structure 9 are joined together, so that the metal fitting body 2 can be easily and firmly manufactured. That is, although it is difficult to manufacture such a hollow metal fitting body 2 by integral molding, it can be easily manufactured by forming two pieces of the upper structure 8 and the lower structure 9 and joining them together by welding. Moreover, since the front-end | tip part of the both-side walls 2c and 2c of the upper structure 8 and the front-end | tip part of the both-side walls 2e and 2e of the lower structure 9 are faced | welded and welded, compared with the case where it joins at a corner | angular part The strength of the main body 2 can be increased.

The invention according to claim 2 is the connecting bracket according to claim 1,
Lower extending walls 2d, 2d extending downward are integrally formed on the parallel sides of the upper wall 2b of the upper structure 8,
Upper extending walls 2f and 2f extending upward are integrally formed on the side walls parallel to each other of the bottom wall 2a of the lower structure 9,
An opening is formed between the lower extending wall 2d and the upper extending wall 2f.

  According to the invention described in claim 2, the metal fitting body 2 can be reinforced by the lower extension wall 2d and the upper extension wall 2f. That is, when a compressive force or a tensile force is applied to the metal fitting body 2, this force can be resisted by the lower extending wall 2d and the upper extending wall 2f.

The invention according to claim 3 is the connecting bracket according to claim 1,
Each of the upper structure 8 and the lower structure 9 is formed by bending a rectangular plate T into a substantially U-shaped cross section.

  According to the invention described in claim 3, the upper structure 8 and the lower structure 9 can be easily manufactured from the rectangular plate T.

The invention according to claim 4 is the connecting bracket according to claim 2,
The upper structural body 8 and the lower structural body 9 each bend the rectangular plate T into a U-shaped cross section, and extend walls formed in the longitudinal center of the two long sides of the rectangular plate T. It is formed by bending Ta and Ta.

  According to the fourth aspect of the present invention, the upper structure 8 and the lower structure 9 having the lower extension wall 2d and the upper extension wall 2f can be easily manufactured from the rectangular plate T.

Invention of Claim 5 is the connection structure of the structure material and pillar using the connection metal fitting as described in any one of Claims 1-4,
On the upper surface of the structural material (base 11), the connection fitting 1 is installed,
In this connection fitting 1, the upper end portion of the anchor 12 protruding from the upper surface of the structural member 11 is inserted into the anchor insertion hole 3 of the connection fitting 1, and the nut 13 b is screwed into the upper end portion of the anchor 12. And is fixed to the upper surface of the structural material 11 by tightening,
A column 15 is erected on the upper surface of the connection fitting 2.
The column 15 has a column support bolt 16 screwed into the screw hole 4 of the connecting fitting 1 inserted into the hole 15 a of the column 15 and is bonded between the inner wall of the hole 15 a and the column support bolt 16. It is fixed to the connecting metal fitting 1 by filling the agent 17.

  According to the fifth aspect of the present invention, the connecting bracket 1 can be easily fixed to the upper surface of the structural member 11 and the column 15 can be easily fixed to the connecting bracket 1. The column 15 can be easily and reliably connected to the structural member 11 via the connecting metal fitting 1 without forming a deep hole extending from the base top surface to the lower end of the foundation or a notch on the side surface of the foundation.

The invention according to claim 6 is the connecting structure of the structural material and the pillar according to claim 5,
A nut 18 is screwed to the lower end portion of the column support bolt 16 screwed into the screw hole 4 of the connection fitting 1, and the nut 18 is tightened to contact the lower surface of the upper wall 2 b of the connection fitting 1. It is characterized by.

  According to the sixth aspect of the present invention, the nut 18 screwed into the lower end portion of the column support bolt 16 screwed into the screw hole 4 of the connection fitting 1 is tightened to tighten the upper wall 2b of the connection fitting 1. Therefore, the column support bolt 16 can be firmly fixed to the connecting metal fitting 1. The nut 18 can be easily tightened by inserting a tool from the opening 5.

According to the present invention, the connecting bracket is installed on the upper surface of the structural member, and the upper end of the anchor protruding from the upper surface of the structural member is inserted into the anchor insertion hole of the connecting bracket, and then the upper end of the anchor is inserted into the upper end of the anchor. The coupling fitting can be fixed to the upper surface of the structural material by screwing and tightening the nut.
Further, a column is erected on the upper surface of the coupling metal, and a column support bolt screwed into the screw hole of the coupling metal is inserted into the column hole of the column, and an inner wall of the column hole and the column support bolt The column can be fixed to the connecting metal fitting by filling the adhesive in between.
Therefore, as in the past, the pillars can be easily and reliably connected to the structural material (foundation) via the connecting fittings without forming deep holes extending from the base top surface to the bottom edge of the foundation or notches on the side surfaces of the foundation. it can.
Further, the metal fitting body is configured such that the upper structure body and the lower structure body are joined by abutting and welding the front end portions of both side walls of the upper structure body and the front end portions of both side walls of the lower structure body. Therefore, the metal fitting body can be easily and firmly manufactured.

Embodiments of the present invention will be described below with reference to the drawings.
FIG. 1 is a perspective view showing an example of a connecting metal fitting according to the present invention. As shown in this figure, the connecting metal fitting 1 includes a metal fitting body 2, an anchor insertion hole 3, a screw hole 4, an opening 5, and screw holes 7 and 7.

The metal fitting body 2 is made of iron formed in a box shape, and an opening 5 is formed on each of a pair of opposing side surfaces. The opening 5 is formed on substantially the entire side surface, and a tool such as a spanner, a wrench or a screwdriver can be inserted into the metal fitting body 2.
The anchor insertion hole 3 is a hole formed in a circular shape at the center of the bottom wall 2 a of the metal fitting body 2. The screw hole 4 is a screw hole formed in a circular shape at the center of the upper wall 2b of the metal fitting body 2, and is formed to have substantially the same diameter as the anchor insertion hole 3 and is arranged coaxially.
The screw holes 7 are formed in the upper wall 2b, and a total of four screw holes 7 are arranged symmetrically in the diagonal direction of the upper wall 2b with the screw hole 4 interposed therebetween.

The metal fitting body 2 includes an upper structure 8 and a lower structure 9.
The upper structure 8 is formed in a substantially U-shaped cross section, and includes the upper wall 2b and both side walls 2c and 2c integrally formed on both sides of the upper wall 2b. In addition, lower extending walls 2d and 2d extending downward are integrally formed on side portions of the upper wall 2b of the upper structure 8 that are parallel to each other.
The lower structure 9 is formed in a substantially U-shaped cross section, and includes the bottom wall 2a and both side walls 2e and 2e integrally formed on both sides of the bottom wall 2a. Further, upper extending walls 2f and 2f that extend upward are integrally formed on side portions of the bottom wall 2a of the lower structure 9 that are parallel to each other.

And the upper structure body 8 and the lower structure body 9 are made to face by welding the front-end | tip part of the both-side walls 2c and 2c of the upper structure 8 and the front-end | tip parts 2a and 2e of the both-side wall of the lower structure 9 and welding. By joining, the metal fitting body 2 is formed. In addition, what is shown with the code | symbol B in FIG. 1 and FIG. 2 is a weld bead. Further, by joining the upper structural body 8 and the lower structural body 9, the lower extending wall 2 d and the upper extending wall 2 f are disposed so as to face each other vertically, and the lower extending wall 2 d and the upper extending wall 2 f There is an opening.
The upper structure 8 and the lower structure 9 are both formed by bending a rectangular plate T into a U-shaped cross section as shown in FIG. The rectangular plate T is formed of a steel plate, and extending walls Ta and Ta are formed at the longitudinal center portions of the two long side portions of the rectangular plate T, respectively. The extension wall Ta becomes the lower extension wall 2d or the upper extension wall 2f. Further, a hole Tb is formed in the central portion of the rectangular plate T. This hole Tb becomes the anchor insertion hole 3 or the screw hole 4.

Then, the rectangular plate T having the above configuration is bent at right angles along lines L1 and L1 indicated by broken lines to form both side walls 2c, 2c or 2e, 2e, and is folded at right angles along lines L2 and L2 indicated by broken lines. The lower extension walls 2d, 2d or 2f, 2f are formed by bending.
When the lower structure 9 is formed, the hole Tb formed in the rectangular plate T is a normal straight hole, and when the upper structure 8 is formed, the hole Tb formed in the rectangular plate T is a screw hole. .
Further, when the upper structure 8 is formed, although not shown, small holes to be the screw holes 7 are formed at four locations around the hole Tb.

Next, an example of a base (structure material) / column connection structure using the connection fitting 1 having the above-described configuration will be described with reference to FIG.
As shown in FIG. 4, a base (structural material) 11 is installed on the upper surface of the foundation 10, and the connection fitting 1 is installed on the upper surface of the base 11 via a nut 13 a.
An anchor bolt (anchor) 12 is embedded in the foundation 10, and an upper end portion of the anchor bolt 12 penetrates the base 11 and protrudes from the upper surface of the base 11.
The upper end portion of the anchor bolt 12 is screwed into the nut 13a and is then inserted into the anchor insertion hole 3 of the connecting fitting 1. The nut 13b is screwed into the upper end portion of the anchor bolt 12 and tightened. It has been. As a result, the connection fitting 1 is fixed to the upper surface of the base 11. The tightening operation of the nut 13b is performed by inserting a tool such as a spanner or a wrench from the opening 5 of the connection fitting 1.

Further, a pillar 15 is erected on the upper surface of the connection fitting 1 fixed to the upper surface of the base 11 (the upper surface of the upper wall 2b). A column hole 15 a extending upward from the lower end surface of the column 15 is formed substantially coaxially with the column 15.
On the other hand, the lower end portion of the column support bolt 16 is screwed into the screw hole 4 of the connection fitting 1, and the upper end portion protrudes from the upper surface of the connection fitting 1 and is inserted into the column hole 15 a of the column 15. . The diameter of the column support bolt 16 is smaller than the inner diameter of the column hole 15a, whereby a gap S is formed between the column support bolt 16 and the inner wall of the column hole 15a. The gap S is filled with the adhesive 17. For example, an epoxy adhesive or a urethane adhesive is used as the adhesive 17. The diameter of the column support bolt 16 is 16 to 26 mm. On the other hand, the inner diameter of the column hole 15a is 1 on one side from the diameter of the column support bolt 16 when the gap S is filled with the epoxy adhesive 17. When the urethane adhesive 17 is filled in the gap S, it is set larger by about 0.5 to 1.5 mm on one side than the diameter of the column support bolt 16.
Further, a nut 18 is screwed to a lower end portion of the column support bolt 16 screwed into the screw hole 4 of the connecting metal 1, and the nut 18 is tightened to contact the lower surface of the upper wall 2 b of the connecting metal 1. It touches. The nut 18 is tightened by inserting a tool such as a spanner or a wrench from the opening 5 of the connecting fitting 1.
Here, when the gap 17 is filled with the adhesive 17, the column hole 15 a of the column 15 is filled with a large amount of the adhesive 17 in advance, and is screwed into the screw hole 4 so as to protrude from the upper surface of the connection fitting 1. This is done by inserting the column support part bolts 16.

  As described above, the column 15 is erected on the upper surface of the connection fitting 1, the column support bolt 16 is inserted into the column hole 15 a of the column 15, and the gap S is filled with the adhesive. Screws 19 and 19 are inserted into the holes 7 and 7 and screwed into the lower end surface of the column 15. By screwing the screws 19 into the lower end surface of the column 15 in this manner, the column 15 can be temporarily fixed to the connection fitting 1 until the adhesive 17 is cured. Further, after the adhesive 17 is cured, the column 15 can be prevented from rotating.

In the present embodiment, as shown in FIG. 5, the column 15 is a column that supports the vibration damping device 20.
The vibration damping device 20 is disposed between a rectangular frame 21 having a rectangular frame shape, a pair of support portions 24, 24 provided to face the rectangular frame 21, and the pair of support portions 24, 24. And a vibration damping mechanism supported by the pair of support portions 24, 24.
The rectangular frame 21 is formed by assembling a pair of left and right vertical frames 22 and 22 and a pair of upper and lower horizontal frames 23 and 23 into a rectangular frame shape. The end of the vertical frame 22 and the end of the horizontal frame 23 are formed. The parts are pin-coupled. Therefore, the rectangular frame 21 can be deformed so as to form a parallelogram when a force acts in the left-right direction. The vertical frame 22 and the horizontal frame 23 are made of metal such as iron or aluminum.
Further, a vibration damping box 29 having a vibration damping member 27 described later is attached to the horizontal frame 23.

  The vibration damping mechanism is supported by the pair of support portions 24, 24, and when the pair of support portions 24, 24 are displaced, the vibration control mechanism swings about a substantially central portion between the pair of support portions 24, 24. The pendulum member 26 configured as described above, and the vibration damping member 27 provided between the end of the pendulum member 26 and the rectangular frame 21 are provided.

The pendulum member 26 is made of a metal such as iron or aluminum, is formed in a plate shape that is long in the vertical direction, and is arranged with its longitudinal direction facing up and down. The left half of the central portion of the pendulum member 26 is rotatably supported on one support portion 24 by a shaft 28, and the right half is rotatably supported on the other support portion 24 by a shaft 28.
As described above, since the central portion in the longitudinal direction of the pendulum member 26 is rotatably supported by the shafts 28 and 28 by the tip portions of the pair of support portions 24 and 24, the pendulum member 26 is caused by vibration such as an earthquake. When the rectangular frame 21 is deformed and the pair of support portions 24, 24 are displaced, the rectangular frame 21 is configured to swing left and right around the substantially central portion between the pair of support portions 24, 24.
Of the shafts 28, 28, one shaft 28 can slide slightly to the left and right.

  A damping member 27 made of, for example, a viscoelastic body formed of high damping rubber is attached to the inner side surface of the damping box 29, and a plate (not shown) is fixed to the damping member 27. ing. This plate is connected to the end of the pendulum member 26 by bolts. Therefore, the damping member 27 is attached to the end portion of the pendulum member 26 via the plate, and is attached to the horizontal frame 23 via the damping box 29.

In the vibration damping device 20 configured as described above, when the building frame is deformed by vibration such as an earthquake, the pair of support portions 24 and 24 are displaced from the pair of columns 15 and 15 via the rectangular frame 21. By the displacement of the pair of support portions 24, 24, the pendulum member 26 swings like a pendulum about the substantially central portion between the pair of support portions 24, 24, and the end portion of the pendulum member 26 is amplified. As a result, the displacement of the pair of support portions 24, 24 is amplified.
Therefore, since the deformation of the vibration damping member 27 provided between the end of the pendulum member 26 and the rectangular frame 21 can be amplified, the vibration damping function can be used effectively from a small deformation of the building frame. The vibration of the pendulum member is damped by the damping member, and thereby the vibration of the rectangular frame 21 is damped. Then, by suppressing the rectangular frame 21, the vibration of the building is suppressed via the columns 15 and 15.

Next, a method of attaching the vibration damping device 20 to the pillars 15 and 15 will be described with reference to FIG.
The vibration damping device 20 is attached to an existing building as a retrofit.
In addition, existing pillars 30 and 30 are erected and fixed to the base 11 installed on the foundation 10, and upper ends of the pair of existing pillars 30 and 30 are connected and fixed to a horizontal beam 31. Yes. Therefore, the pair of existing pillars 30, 30, the horizontal beam 31, and the base 11 provide a square space in front view. The vibration damping device 20 is incorporated in this space as follows.

First, the connection fitting 1 is connected to the foundation 10 on the inner side (left side) of the existing pillar 30 on the right side. That is, as shown in FIG. 2, the connection fitting 1 is installed on the upper surface of the base 11, and the upper end portion of the anchor bolt 12 protruding from the upper surface is inserted into the anchor insertion hole 3 of the connection fitting 1. The connecting metal fitting 1 is fixed to the upper surface of the base 11 by screwing and tightening the nut 13 to the upper end of the anchor bolt 12. by this. The connection fitting 1 is firmly connected to the foundation 10.
Similarly, the connection fitting 1 is connected to the foundation 10 on the inner side (right side) of the existing pillar 30 on the left side. The distance between the pair of left and right connecting fittings 1 and 1 is adjusted according to the distance between the columns 15 and 15 to be erected.

Next, the lower ends of the column support bolts 16 and 16 are screwed into the screw holes 4 to the connecting fittings 1 and 1, and a nut 18 is screwed to the lower ends from the inside of the connecting fittings 1 and 1. .
Next, a column 15 is arranged inside the left existing column 30 (left side) with a slight gap from the existing column 30, and this column 15 is erected on the upper surface of the right connecting bracket 1 and connected. The column support bolt 16 screwed into the screw hole 4 of the metal fitting 1 is relatively inserted into the column hole 15a of the column 15, and an adhesive 17 is filled between the inner wall of the column hole 15a and the column support bolt 16. To do. Note that when the adhesive 17 is filled, the column hole 15a of the column 15 is filled with a large amount of the adhesive 17 in advance, and the column support bolt 16 is inserted. At this time, the surplus adhesive 17 out of the adhesive 17 filled in the gap S escapes to the slit portion 6 of the connection fitting 1. And the excessive adhesive agent 17 which escapes to the slit part 6 can be confirmed from the opening part 5 side of the connection metal fitting 1.
Next, by tightening the nut 18, the nut 18 is brought into contact with the lower surface of the upper wall 2 b of the connection fitting 1, and further, screws 19, 19 are inserted into the screw holes 7, 7 of the connection fitting 1 and the lower end surface of the column 15 is inserted. Screw in. In this way, the column 15 is firmly fixed to the connecting fitting 1.

  Next, the waist wall 32 is disposed on the left side of the lower end of the column 15, the waist wall 32 is installed and fixed on the upper surface of the base 11, and the right end surface of the waist wall 32 is fixed to the left side surface of the column 15. The waist wall 32 is fixed with an adhesive or the like. Moreover, the waist wall 32 is comprised by LVL (single board laminated material).

  Next, the lower horizontal frame 23 of the vibration damping device 20 is installed and fixed on the upper surface of the waist wall 32, and the right vertical frame 22 is abutted and fixed to the left side surface of the column 15. When the horizontal frame 23 is fixed to the upper surface of the waist wall 32, screws are screwed into the waist wall 32 from the horizontal frame, and when the vertical frame 22 is fixed to the left side surface of the column 15, the vertical frame 22 to the column 15 This is done by screwing a screw into. Moreover, you may use an adhesive together with this.

Next, the column 15 is arranged inside the right side of the existing column 30 (right side) with a slight gap from the existing column 30, and the column 15 is erected on the base 11 by the left connecting bracket 1 and the foundation. 10 to connect. Further, the right side surface of the column 15 is abutted and fixed to the left side surface of the waist wall 32 and the left vertical frame 22 of the vibration damping device 20. When the right side surface of the column 15 is fixed to the left side surface of the waist wall 32, the adhesive is used. When the left side surface of the column 15 is fixed to the vertical frame 22, the screw is screwed into the column 12 from the vertical frame 22. Moreover, you may use together the adhesion | attachment by an adhesive agent.
Next, a small wall 33 is disposed in a portion surrounded by the left and right columns 15 and 15 and the horizontal frame 23 at the top of the vibration damping device 20, and the small wall 33 is placed on the left and right columns 15 and 15 and the horizontal frame 23. Fix it. When the small wall 33 is fixed to the pillars 15 and 15, the adhesive is used, and when the small wall 33 is fixed to the horizontal frame 23, a screw is screwed into the small wall 33 from the horizontal frame 23. In addition, the small wall 33 is comprised by LVL (single board laminated material) similarly to the waist wall 32. FIG.

Next, adjusting members 34 and 34 are arranged between the left and right columns 15 and 15 and the horizontal beam 31, and the lower end surfaces of the adjusting members 34 and 34 are joined to the upper end surfaces of the columns 15 and 15 and adjusted. The upper end surfaces of the members 34 and 34 are joined to the lower surface of the horizontal beam 31. These joinings are performed by nailing diagonally the adjusting material 34 and the column 15 or the horizontal beam 31 together with the adhesive. The adjusting member 34 is made of wood having the same cross section as the column 15.
Finally, the small wall 33 and the horizontal beam 31 are joined by the gusset 35. The gusset 35 is a rectangular plate formed of plywood or the like, and the gusset 35 is fixed to the small wall 33 and the horizontal beam 31 by driving nails from the gusset 35 into the small wall 33 and the horizontal beam 31. In this way, by attaching the vibration damping device 20 to the pillars 15, 15, the vibration damping device 20 can be retrofitted to an existing building.

According to the present embodiment, the connection fitting 1 is installed on the upper surface of the foundation (structural material) 11 installed on the foundation 10, and the upper end portion of the anchor 12 protruding from the upper surface of the foundation 11 is connected to the connection fitting 1. By inserting the nut 13 b into the upper end portion of the anchor 12 and tightening it after being inserted into the anchor insertion hole 4, the connection fitting 1 can be fixed to the upper surface of the base 11 and can be firmly connected to the foundation 10. The nut 13b can be easily tightened by inserting a tool through the opening 5.
Further, a column 15 is erected on the upper surface of the coupling metal 1, and a column support bolt 16 screwed into the screw hole 4 of the coupling metal 1 is inserted into the column hole 15 a of the column 15, and the column hole 15 a By filling the adhesive 17 between the inner wall and the column support bolts 16, the columns 15 can be fixed to the connection fitting 1.
Therefore, unlike the prior art, the pillar 15 can be easily and reliably connected to the foundation 10 via the connection fitting 1 without forming a deep hole extending from the base upper surface to the lower end of the foundation or a notch on the side surface of the foundation. .

Further, by inserting the screws 19 and 19 into the screw holes 7 and 7 of the connecting metal 1 and screwing them into the lower end surface of the column 15, and fixing the column 15 to the connecting metal 1, the column 15 is more firmly connected. The column 15 can be temporarily fixed to the connection fitting 1 until the adhesive 17 is cured.
Furthermore, the column support bolt 16 can be firmly fixed to the connection fitting 1 by tightening the nut 18 screwed into the lower end of the column support bolt 16 and bringing it into contact with the lower surface of the upper wall 2b of the connection fitting 1.

Further, the metal fitting body 2 is welded by abutting the tip portions of both side walls 2c, 2c of the upper structure 8 and the tips of both side walls 2e, 2e of the lower structure 9, so that the upper structure 8 and the lower Since the structure 9 is joined, the metal fitting body 2 can be easily and firmly manufactured. That is, although it is difficult to manufacture such a hollow metal fitting body 2 by integral molding, it can be easily manufactured by forming two pieces of the upper structure 8 and the lower structure 9 and joining them together by welding. Moreover, since the front-end | tip part of the both-side walls 2c and 2c of the upper structure 8 and the front-end | tip part of the both-side walls 2e and 2e of the lower structure 9 are faced | welded and welded, compared with the case where it joins at a corner | angular part The strength of the main body can be increased.
Further, since the lower extension walls 2d and 2d are integrally formed on the upper structure 8, and the upper extension walls 2f and 2f are integrally formed on the lower structure 9, the lower extension walls 2d and The metal fitting body 2 can be reinforced by the upper extension wall 2f. That is, when a compressive force or a tensile force is applied to the metal fitting body 2, this force can be resisted by the lower extending wall 2d and the upper extending wall 2f.
Moreover, since the upper structure 8 and the lower structure 9 are formed by bending the rectangular plate T into a substantially U-shaped cross section, they can be easily manufactured.

  In addition, in this Embodiment, although demonstrated using the case where the base 11 and the pillar 15 which were installed in the foundation 10 were connected using the connection metal fitting 1 which concerns on this invention as an example, using the connection metal fitting 1, It can also be used when the column is connected to other structural materials, for example, foundations, jackpots, columns, girders, beams and the like.

An example of the connection metal fitting which concerns on this invention is shown, and it is the perspective view. (A) is a front view, (b) is a side view. It is a perspective view which shows the rectangular board for forming the upper structure or lower structure which comprises the connection metal fitting which concerns on this invention. An example of the connection structure of a structural material and a pillar according to the present invention is a longitudinal sectional view thereof. It is a front view which shows the state which attached the damping device to the pillar connected with the foundation with the connection metal fitting which concerns on this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Connection metal fitting 2 Metal fitting body 2a Bottom wall 2b Upper wall 2c, 2e Side wall 2d Lower extension wall 2f Upper extension wall 3 Anchor insertion hole 4 Screw hole 8 Upper structure 9 Lower structure 10 Foundation 11 Base 12 Anchor bolt (anchor )
13b Nut 15 Column 15a Column hole 16 Column support bolt 17 Adhesive 18 Nut

Claims (6)

A connecting bracket used when connecting a column to a structural material,
A substantially rectangular parallelepiped metal fitting body installed on the upper surface of the structural material comprises an upper structure having a substantially U-shaped cross section and a lower structure having a substantially U-shaped cross section,
The upper structure and the lower structure are joined together by butting the front end portions of the both side walls of the upper structure and the front ends of the both side walls of the lower structure, and orthogonal to the side walls. The metal fitting body having a side surface that is open is formed,
On the bottom wall of the lower structure, an anchor insertion hole is formed through which the upper end of the anchor protruding from the upper surface of the structural material is inserted,
The upper wall of the upper structure is formed with a screw hole into which a lower end portion of a column support bolt inserted into a column hole formed in a column standing on the upper surface of the upper wall is screwed. A connecting bracket characterized by The connecting bracket according to claim 1,
Lower extending walls that extend downward are integrally formed on side portions of the upper wall of the upper structure that are parallel to each other,
Upper extending walls that extend upward are integrally formed on the sides parallel to each other of the bottom wall of the lower structure,
A connection fitting having an opening between the lower extension wall and the upper extension wall. The connecting bracket according to claim 1,
The upper structure and the lower structure are each formed by bending a rectangular plate into a substantially U-shaped cross section. In the connecting bracket according to claim 2,
The upper structure body and the lower structure body each bend a rectangular plate into a U-shaped cross section and bend an extension wall formed at each of the longitudinal center portions of two long sides of the rectangular plate. It is formed by this, The connection metal fitting characterized by the above-mentioned. A structure and a column connection structure using the connection fitting according to any one of claims 1 to 4,
On the upper surface of the structural material, the connecting bracket is installed,
In this connection fitting, after the upper end portion of the anchor protruding from the upper surface of the structural member is inserted into the anchor insertion hole of the connection fitting, the nut is screwed into the upper end portion of the anchor and tightened. It is fixed on the upper surface of the structural material,
A column is erected on the upper surface of the connecting bracket,
The pillar is inserted into the hole of the pillar by inserting a pillar support bolt screwed into the screw hole of the connection fitting, and by filling an adhesive between the inner wall of the hole and the pillar support bolt, A structure for connecting a structural member and a column, which is fixed to a connecting bracket. In the connection structure of the structural material and the column according to claim 5,
A nut is screwed into a lower end portion of the column support bolt that is screwed into the screw hole of the connection fitting, and the nut is tightened and is in contact with the lower surface of the upper wall of the connection fitting. Connection structure of structural material and pillar.

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