JP5940322B2 - Pillar fixture - Google Patents

Description

  The present invention relates to a column fixture using a foundation packing and a column base in wooden construction.

  In a wooden frame construction method using bars such as columns and beams as the skeleton of the building, it is necessary to firmly connect the foundation and the columns to ensure sufficient strength. There are various ways to connect the foundation and the pillar, but anchor bolts are embedded in the concrete foundation and the pillar is often pulled to the foundation via hole-down hardware. Another method includes interposing a column base metal between the foundation and the column. A column base metal part consists of a part installed in the upper surface of a foundation, and a part inserted in a pillar, and a postscript nonpatent literature 1 is mentioned as the example of the shape.

  Technological development related to column base hardware has been continuously carried out for a long time. One example of this is Patent Document 1, which will be described later, and is a joint tool (column for fastening) to a foundation based on a through column used in a three-story wooden building. Leg hardware) is disclosed. The joint is a shape in which a box-shaped first joint placed on the upper surface of the foundation and a columnar second joint inserted into the column are joined, and the first joint is an anchor bolt. The second joint is fixed to the pillar with bolts or pins. By using such a joint tool, the peripheral aesthetics are improved, and it is not necessary to process a joint on a pillar or the like.

  Patent Document 2 discloses a column base metal fitting (column base hardware) that is excellent in workability during construction. This column base bracket can be divided into a cylindrical base embedded part embedded in the base and a hozo part inserted into the pillar. The base embedded part is embedded in the base and the base part is After being inserted, a pillar is placed on the upper surface of the base, a locking body penetrating the base burying portion and the tenon portion is driven, and the base and the pillar are connected. In this way, by making the column base brackets separable, there are advantages such as excellent workability when fixing the foundation buried portion to the foundation.

  An example of using the column base hardware is shown in FIG. This figure depicts a situation in which a foundation is laid on the upper surface of the upright part of a concrete foundation, and a column is installed on the upper surface, and the column is fixed to the upright part with a column base hardware. Anchor bolts protrude from the upper surface of the upright, and a foundation packing is sandwiched between the upper surface of the upright and the lower surface of the base for ventilation. Column base hardware is a shape in which a cylindrical shaft protrudes from the upper surface of a cylindrical basic part, the basic part is embedded in a cavity processed in the base, and the shaft is a shaft hole processed in the center of the column Plugged into. The basic part is drawn to the upright portion by anchor bolts, nuts, and washers, and the shaft is fixed to the column by drift pins. A pin hole for inserting the drift pin is provided on the side peripheral surface of the shaft.

JP-A-11-148181 JP 2002-294875 A Design Registration No. 1126569

  In FIG. 7, when installing the column, first, the anchor bolt is inserted into the middle hole of the foundation packing, the foundation packing is placed on the upper surface of the upright part, and further, the anchor bolt is inserted into the bottom hole of the basic portion. Is put on the upper surface of the foundation packing, and then the nut and washer are inserted into the tip of the anchor bolt and the nut is tightened. When the nut is tightened, the nut and the basic portion come into contact with each other, so that the column base metal moves with the nut, the direction of the pin hole is incorrect, and the drift pin cannot be driven later. Therefore, it is always necessary to adjust the position of the column base during work, and an increase in labor and time is inevitable, and some countermeasure is required.

  In addition, the position of the anchor bolt protruding from the upright part is unavoidable to some extent with respect to the design drawing. Therefore, on the upper surface of the upright portion, a sumi line indicating the position of the column is drawn, and based on this, a base packing and a column base metal are arranged. However, in many cases, the base packing and the column base hardware do not consider the alignment with the sumi line, and the position adjustment during construction may be complicated.

  The present invention has been developed based on such a situation. When tightening a nut screwed to an anchor bolt, it is possible to prevent the column base metal from being rotated and to easily adjust the position of the column base with the sumi wire. The purpose is to provide.

The invention according to claim 1 for solving the above-mentioned problem is for mounting a column on the upright part of the foundation, and has a base hole that is placed on the upper surface of the upright part and into which an anchor bolt is inserted. A packing, and a column base mounted on the upper surface of the foundation packing and fixing the column, the column base including a basic part having a bottom hole into which the anchor bolt is inserted, and the basic part A shaft that protrudes from the top surface of the shaft and is inserted into the pillar, and a pin hole is formed in the side peripheral surface of the shaft so as to pass a drift pin driven from a lateral hole provided on a side surface of the pillar. There, at the boundary between the lower surface of the base portion and the upper surface of said base packing, a convex portion is provided on one surface, the recessed portion for fitting the convex portion provided on the other surface, convex portions and concave portions By fitting the column base hardware The prevents the lateral hole and the pin hole is mounted tool pillar, characterized in that aligned concentrically.

  The present invention is for installing on a foundation the lower end of a vertically arranged column in a wooden construction, and uses a foundation packing and a column base hardware. The upright part is a part of the foundation, and is a concrete wall extending along the outer edge of the building, the compartment of the room, etc., standing up vertically from the ground, and its upper surface is finished horizontally. Next, the anchor bolt is for firmly connecting the foundation and the building, and most of the anchor bolt is embedded in the interior of the upright, and only the upper end of the anchor bolt protrudes from the upper surface of the upright.

  The base packing is a plate that is sandwiched between the upper surface of the erection and the lower surface of the foundation to prevent contact between the erection and the base, and is widely used for the purpose of improving air permeability under the floor. . The basic packing used in the present invention is assumed to be used in combination with an anchor bolt, and is provided with a medium hole for inserting the anchor bolt. In addition, if the basic packing has a predetermined strength, its material, thickness and the like can be freely determined.

The column base hardware basically has the same shape as that conventionally used, and includes a basic portion fixed to the foundation via an anchor bolt and a shaft inserted into the column. It is assumed that it is placed on the upper surface of the foundation packing. A bottom hole for inserting an anchor bolt is provided on the lower surface of the basic portion. The shaft is inserted into a shaft hole processed into a pillar . In addition, the foundation packing shall be larger than the column base hardware as seen from directly above.

  The present invention is characterized in that a convex portion and a concave portion that can be fitted to both boundary surfaces are provided so that the base packing and the column base metal can be integrated. Conventionally, the foundation packing and column base hardware were individually arranged and combined freely, but now, when the column base hardware is placed on the upper surface of the foundation packing, the column base hardware can move freely, It is difficult to ensure the accuracy of the installation position. However, by providing a convex part and a concave part and fitting both, the column base metal moves together with the base packing, so that it is easy to ensure accuracy.

  The convex part and the concave part are literally local irregularities formed on the upper surface of the basic packing or the lower surface of the basic part, one of the pair of convex part and concave part is provided on the upper surface of the basic packing, and the other is Provided on the bottom of the basic part. In addition, the convex part and the concave part to be paired are set to have an accuracy in which there is no play and can be easily fitted by human power. Of course, the convex portion and the concave portion are for restricting the horizontal displacement between the foundation packing and the column base metal, and are not for restricting the displacement in the vertical direction. In addition, a pair of convex and concave portions can be paired by adjusting the shape, but usually a plurality of pairs.

  By providing the convex portion and the concave portion in this way, the column base metal can be integrated with the base packing, and the base packing may be moved in order to adjust the position of the column base metal mounted on the upright portion. The base packing is larger than the column base hardware when viewed from directly above, and the position can be easily finely adjusted. In addition, since the basic packing has a large contact area with the upright portion and increases friction, it does not move carelessly. Therefore, when tightening the nut that is screwed to the anchor bolt, it is possible to prevent the column base hardware from rotating and to install the column base hardware in a correct posture.

  The invention according to claim 2 is for easily adjusting the position of the foundation packing, and the foundation packing is characterized in that a reference line is provided at a position extending from the outer edge of the upper surface to the side surface. The reference line is a thin line that serves as a reference when adjusting the position of the foundation packing by visual inspection. In the present invention, the reference line reaches the side surface from the vicinity of the outer edge of the upper surface of the foundation packing through the corners of the upper surface and the side surface. Shall. In addition, the reference line is not sufficient at one location for one basic packing, and is usually provided at a total of four locations in the center of each side surface. In addition, the reference line may be formed by coloring. However, in consideration of discoloration or the like, the reference line may be formed in a groove shape with the surface cut.

  By providing the reference line so as to straddle the upper surface and the side surface, it can be easily viewed from two directions, the position of the foundation packing can be surely grasped, and the adjustment during construction can proceed smoothly. According to the first aspect of the present invention, since the column base metal is integrated with the foundation packing, if the foundation packing is installed at an accurate position, the column base metal is necessarily installed at an accurate position. Therefore, even if there is an error in the anchor bolt embedding position, the column can be installed at an accurate position.

As in the first aspect of the present invention, a base packing and a column base metal are used as a column fixture, and a pair of convex and concave portions are provided on the boundary surface between the base packing and the column base metal, By fitting the recess, the column base metal can be integrated with the basic packing. The base packing has a wide contact area with the upright portion, and movement is restricted by friction. Therefore, when the nut is screwed into the anchor bolt and tightened, the column base metal unit integrated with the foundation packing is stationary without being rotated with the nut. Therefore, if the foundation packing is placed in the correct position before tightening the nut, the shaft pin hole of the column base and the horizontal hole of the column will be aligned concentrically without adjusting the position later, and the drift pin will be driven immediately. It is possible and can save time and time during construction .

  As in the invention described in claim 2, the base packing is provided with a reference line at a position extending from the outer edge of the upper surface to the side surface, thereby adjusting the position of the base packing based on the smear line drawn on the upper surface of the upright portion. Easy to implement. In the present invention, since the foundation packing and the column base metal are integrated by the convex portion and the concave portion, if the base packing is installed at an accurate position, the column base hardware is inevitably installed at an accurate position, and the installation of the subsequent column is performed. Work can be carried out smoothly.

It is a perspective view which shows the structural example of the fixture of the pillar by this invention. It is a perspective view which shows the process of fixing the column base metal object of FIG. It is a perspective view which shows the state which installed the pillar of FIG. It is a perspective view which shows the structure using a lag screw as an insertion pillar part. It is a perspective view which shows the state which installed the pillar of FIG. It is a perspective view which shows the structure using a plate as an insertion pillar part. It is a perspective view which shows the usage example of the column base metal fixtures which have prevailed conventionally.

  FIG. 1 shows a configuration example of a column fixture according to the present invention. A base 51 is placed on the upper surface of the upright portion 41 standing upright from the ground via the foundation packing 11, and a column 61 is placed on the upper surface of the base 51, and the column base 21 is used to fix the column 61. . Note that the base 51 and the pillar 61 are made of wood including laminated timber. The column base 21 has a shape in which a basic portion 22 fixed to the upright portion 41 and an insertion column portion inserted into the column 61 are integrated by welding. The basic portion 22 has a cylindrical shape and a side periphery. About half of the surface is open, and the corresponding insertion column is a cylindrical shaft 27.

  The upright portion 41 is a part of a concrete foundation that supports the building, has a wall shape that is elongated along the outer edge of the building, and the upper surface is finished horizontally. The anchor bolts 44 are for attracting the building to the foundation. Most of the anchor bolts 44 are embedded in the upright portion 41, and only the upper end portion protrudes from the upper surface of the upright portion. The anchor bolt 44 is embedded immediately below the center of the column 61, but a certain amount of error is unavoidable. Therefore, on the upper surface of the upright portion 41, a smear line 48 indicating the exact center position of the column 61 is drawn. The smear line 48 is drawn in a cross shape, and the center of the column 61 is made to coincide with the center thereof.

  The foundation packing 11 is used to secure a vent hole between the upright portion 41 and the base 51. The basic packing 11 shown in the figure is arranged directly below the pillar 61, has the same size as the cross section of the pillar 61, and has a center hole 14 into which an anchor bolt 44 is inserted at the center. The material of the basic packing 11 is arbitrary, and may be a metal other than rubber or hard resin. Further, in order to increase the friction of the foundation packing 11, the upper and lower surfaces may be corrugated as shown in the figure.

  The column base 21 is placed on the upper surface of the foundation packing 11. Therefore, the center of the upper surface 13 of the basic packing 11 is formed with a circular surface corresponding to the basic portion 22 and can be reasonably contacted with the entire lower surface 23 of the basic portion 22. In addition, a bottom hole 24 is provided at the center of the basic portion 22 in order to insert the anchor bolt 44. In addition to the bottom hole 24, the middle hole 14 of the base packing 11 has a large diameter so as to absorb an error in the position where the anchor bolt 44 is embedded.

  The upper surface 13 of the base packing 11 is formed with four convex portions 15 projecting upward, and further on the lower surface 23 of the basic portion 22 of the column base 21, as shown in the lower left of the figure. Concave portions 25 to be paired with are formed at four locations. The convex portion 15 and the concave portion 25 can be fitted without difficulty by human power and are finished with precision without loosening. When the lower surface 23 of the basic portion 22 is brought into contact with the upper surface 13 of the basic packing 11, the convex portion 15 becomes the concave portion 25. After the fitting, the foundation packing 11 and the column base 21 are horizontally moved integrally.

  At the center of each side surface of the foundation packing 11, a reference line 18 whose surface is cut is provided. The reference line 18 is a V-shaped groove extending from the outer edge to the side surface of the upper surface 13. When the individual reference lines 18 are aligned with the sumi lines 48, the foundation packing 11 is accurately arranged. Note that the reference line 18 extends over both the upper surface 13 and the side surface, so that the positional relationship with the sumi line 48 can be grasped from both the upper and side directions, and the workability is excellent.

  After the column base 21 is placed on the upright portion 41 via the foundation packing 11 and the convex portion 15 and the concave portion 25 are fitted, a washer 45 and a nut 46 are inserted from the side of the basic portion 22, and these are anchor bolts 44. At the tip of the. Next, the base packing 11 is accurately arranged by aligning the individual reference lines 18 with the sumi lines 48. Finally, the nut 46 is tightened to fix the column base 21. At this time, the column base 21 does not rotate with the nut 46 due to friction between the foundation packing 11 and the upright portion 41, and remains stationary. To do.

  Since the basic portion 22 is embedded in the base 51, a cylindrical hollow portion 52 is processed in the base 51 at a predetermined position. A shaft hole 67 for inserting the shaft 27 is processed at the center of the lower surface of the column 61. Further, the column 61 and the shaft 27 are fixed via a drift pin 68. Therefore, a lateral hole 62 is processed on the side surface of the column 61, and a pin hole 28 is formed on the side peripheral surface of the shaft 27. The convex portion 15 and the concave portion 25 are formed so that the lateral hole 62 and the pin hole 28 are concentrically aligned when the basic packing 11 is accurately arranged.

  FIG. 2 shows a process of fixing the column base 21 of FIG. First, the anchor bolt 44 is inserted into the inner hole 14, and the foundation packing 11 is placed on the upper surface of the upright portion 41. There may be an error in the embedded position of the anchor bolt 44, and the center of the inner hole 14 and the anchor bolt 44 does not always coincide. Next, the column base 21 is placed on the upper surface 13 of the foundation packing 11. At that time, all the convex portions 15 are fitted into the concave portions 25, and the upper surface 13 of the basic packing 11 and the lower surface 23 of the basic portion 22 are brought into surface contact. The convex portions 15 and the concave portions 25 are arranged at intervals of 90 degrees, and it is necessary to confirm the direction of the pin holes 28 when fitting.

  Next, after the washer 45 and the nut 46 are inserted from the side of the basic portion 22 and the washer 45 is inserted into the anchor bolt 44, the nut 46 is screwed and tightened with a finger. At this time, it is confirmed whether or not each reference line 18 coincides with the smear line 48, and if there is an error, it is adjusted. Thereafter, when the nut 46 is tightened with a tool such as a spanner, the column base 21 is fixed to the upright portion 41. During tightening, the nut 46 and the column base 21 are not rotated due to friction between the foundation packing 11 and the upright portion 41, and the position and orientation of the column base 21 are not changed. Therefore, the subsequent steps can be smoothly advanced.

  FIG. 3 shows a state in which the column 61 of FIG. The foundation packing 11 is located immediately below the column 61, and the downward load applied to the column 61 is transmitted to the upright portion 41 through the base 51 and the foundation packing 11, and a bending moment acts on the base 51. Absent. Further, by aligning the sumi line 48 and the reference line 18, the column 61 can be installed at an accurate position, and the horizontal hole 62 of the column 61 and the pin hole 28 of the shaft 27 are aligned concentrically, so that the drift pin 68 can be easily attached. It can be driven in and the pillar 61 can be quickly installed.

  FIG. 4 shows a configuration using a lag screw 37 as an insertion post portion. On the side peripheral surface of the lag screw 37, a protrusion 38 that surrounds in a spiral shape is formed, and when the protrusion 38 bites into the pillar 61, both are firmly integrated. In addition, in order to screw the lag screw 37 into the center of the lower surface of the column 61, a shaft hole 67 is machined, and the lag screw 37 is divided from the basic portion 22 in consideration of the screwing work. , Screw only the lag screw 37 into the shaft hole 67 in advance. Further, the lag screw 37 and the basic portion 22 are integrated by the bolt 32. Therefore, an upper hole 31 is provided in the center of the upper surface of the basic portion 22, and a female screw 39 is formed in the center of the lower end of the lag screw 37.

  The basic portion 22 has a rectangular box shape, and a bottom hole 24 for inserting an anchor bolt 44 is provided at the center of the lower surface 23 of the basic portion 22 as shown in the middle right portion. A recess 25 is provided. The basic portion 22 is fixed to the upright portion with a washer 45 and a nut 46 as in the previous figure. The base packing 11 has a rectangular shape larger than the cross section of the column 61, and is provided around the inner hole 14 into which the anchor bolt 44 is inserted, and two convex portions 15 are provided next to it. By fitting the convex portion 15 into the concave portion 25, the basic packing 11 and the column base 21 can be integrated. In addition, a reference line 18 is provided at the center of each side surface of the foundation packing 11 for position adjustment with the sumi wire 48. The reference line 18 straddles the upper surface 13 and the side surface of the foundation packing 11.

  FIG. 5 shows a state in which the column 61 of FIG. The pillar 61 is placed on the basic portion 22, and the base 51 is disposed on both sides of the basic portion 22. The end of the base 51 is placed on the foundation packing 11. At the time of construction, first, only the lag screw 37 is screwed into the shaft hole 67 of the column 61, and the basic packing 11 is mounted on the upright portion 41, and only the basic portion 22 is mounted thereon. Next, the position of the foundation packing 11 is adjusted using the reference line 18 and the smear line 48, and then the nut 46 is tightened to fix the basic portion 22. Finally, when the pillar 61 is placed on the basic portion 22, the bolt 32 is inserted into the basic portion 22, and screwed into the female screw 39 and tightened, the basic portion 22 and the lag screw 37 are integrated, and the pillar 61 is integrated. Installation of is completed.

  FIG. 6 shows a configuration using a plate 35 as an insertion post part. The width of the plate 35 is substantially equal to that of the column 61, and a slit 65 is processed in the column 61 in order to insert the plate 35. After the plate 35 is inserted into the slit 65, the column 61 is fixed to the plate 35 with a total of four drift pins 68. Therefore, a lateral hole 62 is processed on the side surface of the column 61, and a pin hole 28 is provided on the side surface of the plate 35. As in FIG. 4, the basic portion 22 has a rectangular box shape, is provided with a bottom hole 24 and a concave portion 25, and is integrated with the plate 35 by welding.

11 Foundation packing 13 Upper surface 14 Middle hole 15 Protrusion 18 Reference line 21 Column base 22 Base part 23 Lower surface 24 Bottom hole 25 Concave 27 Shaft (insertion column part)
28 Pin hole 31 Upper hole 32 Bolt 35 Plate (insert post)
37 lag screw (post)
38 Projection 39 Female thread 41 Upright part (basic)
44 Anchor bolt 45 Washer 46 Nut 48 Sumi wire 51 Base 52 Cavity 61 Column 62 Horizontal hole 65 Slit 67 Shaft hole 68 Drift pin

Claims (2)

For installing the pillar (61) on the upright part (41) of the foundation,
A foundation packing (11) mounted on the upper surface of the upright (41) and having a bore (14) for inserting an anchor bolt (44);
A column base (21) mounted on the upper surface of the foundation packing (11) and fixing the column (61);
Use
The column base (21) has a basic part (22) having a bottom hole (24) into which the anchor bolt (44) is inserted, and protrudes from the upper surface of the basic part (22). It consists of a shaft (27) inserted inside,
A pin hole (28) is formed on the side peripheral surface of the shaft (27) so as to pass a drift pin (68) driven from a lateral hole (62) provided on a side surface of the column (61).
At the boundary between the upper surface (13) of the basic packing (11) and the lower surface (23) of the basic portion (22), a convex portion (15) is provided on one surface (13 or 23), and the other surface ( 23 or 13) is provided with a concave portion (25) for fitting the convex portion (15) ,
The convex portion (15) and the concave portion (25) are fitted to prevent the column base metal (21) from rotating, and the lateral hole (62) and the pin hole (28) are aligned concentrically. Pillar fixture to play. 2. The column mounting tool according to claim 1, wherein a reference line (18) is provided in the base packing (11) at a position extending from an outer edge to a side surface of the upper surface (13).

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