JP4774319B2 - Column and foundation joining device - Google Patents

Description

  The present invention relates to a column / base joining apparatus in which a column is connected to an anchor bolt standing on foundation concrete.

  Anchor bolts erected on the foundation concrete are passed through a base placed on the foundation concrete and a joining plate superimposed on the foundation, and a nut is screwed onto the tip of the anchor bolt protruding from the joining plate. The base plate and the joining plate are fastened to the foundation concrete, and the joining plate is inserted into a slit provided on the lower surface of the column, and the joining plate and the column are fixed by a fastening pin (drift pin) driven from the side surface of the column. There exists a thing of the structure connected mutually (for example, patent document 1).

JP-A-8-184062

  The above-mentioned conventional structure constitutes a joining device excellent in strength in the sense that the pillar and the base are joined to the foundation concrete by using anchor bolts arranged at the axis position of the pillar. After all, the external force to be loaded has a problem in terms of durability because it is configured to concentrate on the anchor bolt.

  This invention pays attention to such a fault of a prior art example, and it was created for the purpose of providing a generally durable joining apparatus without the load of the external force with respect to a pillar concentrating on an anchor bolt.

  Anchor bolts projecting on the foundation concrete from below on the foundation placed on the foundation concrete are connected to each other by inserting the joining cylinders from above and screwing them together, and the tenon engaging the upper end of the joining cylinder The tenon base of the tenon hardware comprising a base and a tenon tube projecting from the upper center of the tenon base is engaged with one or both of the base and the pillar erected on the base, The tip of the connecting bolt fitted into the tenon tube and the upper part of the joining tube are screwed together to connect the tenon tube to the tenon tube and the tenon tube. The pillars are fixed to each other with a fixing rod.

  According to the present invention, the pillar and the base can be firmly joined in a state where the axes of the anchor bolts inserted into the pillar and the base coincide with each other, and the external force loaded on the pillar is not concentrated on the anchor bolt, It is possible to increase the shearing force at the boundary between the pillar and the base, and to provide a generally durable joining device.

  Drawing is sectional drawing which shows each Example of the joining apparatus of the pillar and foundation which concerns on this invention.

  The column / base joining apparatus according to the present invention is configured by joining together a tenon 1 and a joining cylinder 2 and a base 6 placed on the pillar 4 and the foundation concrete 5 by using connection bolts 3. is there.

  The tenon hardware 1 has a through hole 7 in the vertical direction, and the upper surface side recessed portion 1a of the circular tenon base 8 having a circular shape in plan view with the central portions of the upper and lower surfaces surrounding the through hole 7 as the recessed portions 1a and 1b. The lower end of the mortise tube 9 is inserted and welded, and the circumferential side of the mortise tube 9 formed of a cylindrical body having an inner diameter larger than the through-hole 7 has a vertical relationship. Through holes 10 having different directions in the direction perpendicular to each other are provided.

  The joining cylinder 2 is configured by providing an upper screw hole 2a in the upper half of the cylindrical body and a lower screw hole 2b in the other lower half on the axis of the cylindrical body. The screw portion of the connection bolt 3 and the lower screw hole 2b have screw diameters that are respectively screwed with the screw portion of the anchor bolt 11 erected on the foundation concrete 5.

  Then, the base 6 is placed on the foundation concrete 5 so that the anchor bolt 11 erected on the foundation concrete 5 is inserted into the engagement hole 12 provided in the foundation 6, and is fitted into the engagement hole 12. The tip of the inserted anchor bolt 11 and the screw hole 2b on the lower side of the joining cylinder 2 are screwed together and fastened to assemble the joining cylinder 2 to the anchor bolt 11, and the tenon base 8 below the tenon bracket 1 is attached. The upper end of the joining cylinder 2 is engaged with the lower recessed portion 1b and the tenon 1 is raised on the base 6 and combined, and the connecting bolt 3 is fitted to the joining cylinder 2 of the tenon 1 The tip is aligned with the upper screw hole 2a of the joining tube 2 through the through hole 7 that is inserted and provided in the tenon base 8, and an appropriate tool is inserted into the joining tube 2 to rotate the connection bolt 3 to connect the connection bolt 3 Are screwed into the upper screw hole 2a and the tenon 1 The joint 6 is connected to the anchor bolt 11 via the joint cylinder 2 and the base 6 is pressed against the tenon base 8 of the tenon hardware 1 and is further firmly tightened to the foundation concrete 5, while the joint cylinder 2 of the tenon hardware 1 is the base. 6 is projected.

  Then, the connecting cylinder 2 is inserted into the vertical hole 4a provided with the lower surface opened, and the through hole 10 formed in the connecting cylinder 2 and the vertical hole 4a are crossed so as to correspond to the through hole 10. The column 4 is combined with the connecting cylinder 2 so as to match the fitting insertion hole 12 provided on the lower side of the column 4, and a fixing rod (drift pin) 13 is fitted and inserted into each of the holes 10 and 12. And the base 6 are joined together.

  In the first embodiment shown in FIG. 1, the tenon base 8 of the tenon hardware 1 having a diameter larger than that of the joining cylinder 2 and the tenon cylinder 9 is fitted to the lower end 4a ′ having the large diameter of the vertical hole 4a on the column 4 side. In the second embodiment, one half of the tenon base 8 is formed at the lower end 4a 'having a large diameter of the vertical hole 4a on the column 4 side, and the other half is formed at the large diameter of the engagement hole 12 on the base 6 side. 3 is fitted to only the upper end 12 'of the engagement hole 12 provided on the base 6 side. The third embodiment of FIG. The embodiment is different only in this point, and the remaining points adopt the same configuration as described above. In any case, the presence of the tenon base 8 increases the shearing force.

Sectional drawing of a 1st Example. Sectional drawing of a 2nd Example. Sectional drawing of a 3rd Example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Mortise hardware 2 Joint cylinder 3 Connection bolt 4 Pillar 5 Foundation concrete 6 Base 8 Mortise base 9 Mortise cylinder 11 Anchor bolt 13 Fixing rod

Claims (1)

Anchor bolts projecting on the foundation concrete from below on the foundation placed on the foundation concrete are connected to each other by inserting the joining cylinders from above and screwing them together, and the tenon engaging the upper end of the joining cylinder The tenon base of the tenon hardware comprising a base and a tenon tube projecting from the upper center of the tenon base is engaged with one or both of the base and the pillar erected on the base, and the head of the tenon base is engaged with the tenon base. The tip of the connecting bolt fitted into the tenon tube and the upper part of the joining tube are screwed together to connect the tenon tube to the tenon tube and the tenon tube. A column / base joining apparatus in which the columns are fixed to each other with a fixing rod.

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