JP6487806B2 - Pillar, fastening structure with pillar understructure and building unit - Google Patents

Description

  The present invention relates to a pillar, a fastening structure with a lower structure of the pillar, and a building unit.

  2. Description of the Related Art Conventionally, in a pillar constituting a building such as a unit building, a box-like hardware is built in the pillar body in order to increase the bonding strength with a floor panel on which the pillar is erected or a lower structure such as a foundation.

  That is, in a conventional building, when a column is erected on a lower structure such as a floor panel or a foundation, a bolt (joint bolt or anchor bolt) extending from the lower structure side is attached to the bottom of the box-shaped hardware. It passes through the provided bolt insertion hole and protrudes upward, and a nut is screwed onto the protruding end. Thereby, the pillar of the building is fastened to the lower structure, and the pillar is prevented from being displaced with respect to the lower structure.

  Here, as described in Patent Document 1, a box-shaped hardware incorporated in a column main body in a conventional column has a rectangular box shape, and a hollow portion is formed between two opposing surfaces. Then, the column main body and the box-shaped hardware are joined by pins that are pierced by two opposing surfaces of the box-shaped hardware. Thus, the vertical load acting on the column main body is transmitted to the box-shaped hardware through the pin.

Japanese Unexamined Patent Publication No. 9-15525

  However, in the case of a box-shaped hardware incorporated in a conventional column body, when a downward load acting on the column body is transmitted via a pin, the compressive force resulting from this downward load sandwiches the hollow portion. Since there is a possibility that each of the two opposing surfaces bends and deforms in a curved shape toward the hollow portion, causing crushing, there is a limit in improving the strength.

  In addition, in the conventional fastening structure with the lower structure of the column that has box-shaped hardware built in the column main body, the nut screwed to the bolt inserted through the bottom of the box-shaped hardware is moved from the building unit factory to the site. It was necessary to recheck the tightening condition of the nut at the site.

  The subject of this invention is aiming at the intensity | strength improvement of the column which incorporates a box-shaped metal fitting in a column main body.

  Another object of the present invention is to prevent loosening of a nut screwed to a bolt inserted into a bottom portion of a box-shaped hardware in a fastening structure with a lower structure of the column in which the box-shaped hardware is built in the column main body. The plan is to eliminate the need for local reconfirmation.

  The invention according to claim 1 is a pillar in which a box-shaped hardware is built in a pillar body and a paddle is loaded so as to fill between two opposing faces of the box-shaped hardware.

  The invention according to claim 2 is the invention according to claim 1, wherein the column main body and the box-shaped hardware are joined by pins that are pierced by two opposing surfaces of the box-shaped hardware, and A notch for avoiding the interference is provided.

  In the invention according to claim 3, the pillar according to claim 1 or 2 is erected on the lower structure, and a bolt extending from the side of the lower structure is inserted through the bottom of the box-shaped hardware. This is a fastening structure with a column lower structure in which a nut is screwed to the insertion end and the column and the lower structure are joined.

  According to a fourth aspect of the present invention, in addition to the third aspect of the invention, the paddle is configured to restrict the upward movement of a nut screwed into the insertion end of the bolt.

  The invention according to claim 5 is a building unit in which a pillar to which the fastening structure of the pillar according to claim 3 or 4 and the lower structure is applied is erected on a floor panel as the lower structure. is there.

(Claim 1)
(a) A downward load acts on the column main body in which the box-shaped hardware is incorporated, and this downward load is transmitted to the box-shaped hardware so that each of the two surfaces facing each other across the hollow portion of the box-shaped hardware Even if it tries to bend and deform in a curved shape toward the hollow portion, the paddles loaded between the two surfaces prevent the bending deformation. Thereby, the strength improvement of a box-shaped hardware can be aimed at.

(Claim 2)
(b) When the box-shaped hardware is joined to the column main body by a pin that is pierced by two opposing surfaces of the box-shaped hardware, the paddle is prevented from interfering with the pin due to the presence of the notch. It can be loaded so as to fill between two opposing surfaces of the metal hardware.

(Claim 3)
(c) A bolt extending from the lower structure side is inserted into the bottom of the box-shaped hardware, and a nut is screwed into the insertion end, so that the column main body and the lower structure are interposed via the box-shaped hardware. Securely joined.

(Claim 4)
(d) The hardwood loaded so as to fill the space between the two opposing faces of the box-shaped hardware moves upward the nut screwed to the insertion end of the bolt inserted into the bottom of the box-shaped hardware of (c) above. regulate. Accordingly, it is possible to prevent loosening caused by vibration of the nut screwed to the bolt, and to eliminate the need for reconfirmation on site.

(Claim 5)
(e) In the building unit in which the pillar is erected on the floor panel as the lower structure, the above (a) to (d) can be realized.

FIG. 1 is a cross-sectional view showing a fastening structure between a column and a floor panel in a building unit. FIG. 2 is a sectional view taken along line II-II in FIG. FIG. 3 is a perspective view showing a fastening structure between a pillar and a floor panel. FIG. 4 is a cross-sectional view showing a structure for preventing a nut from loosening with a paddle. FIG. 5 is a perspective view showing a fixing process of a paddle.

  1 and 2 show a unit building 100 to which the present invention is applied. The unit building 100 is constructed by installing each of the plurality of building units 30 on the foundation 10 (FIGS. 1 and 2 show one building unit 30 of the plurality of building units 30). .

  As shown in FIG. 1, the foundation 10 is provided with anchor bolts 11 planted at a plurality of positions in the longitudinal direction so as to protrude upward from the upper surface thereof.

  The building unit 30 is formed by installing a wall panel 50 on the outer edge of the floor panel 40.

  The floor panel 40 has a floor frame assembly 42 that is assembled in a square shape by a joist 41 made of wood, and a floor material 43 is stretched on the upper surface of the floor frame assembly 42. A joining frame member 44 (base) is provided at the lower peripheral edge of the floor frame assembly 42. In addition, a counterbore 45 having an area and a depth in which the lower washer 61 is accommodated is formed on the lower surface of the joining frame member 44 at a portion where a lower washer 61 of a connector 60 described later is attached. Further, the joining frame member 44 includes a bolt insertion hole 44H through which the anchor bolt 11 is vertically inserted. Further, the joining frame member 44 and the floor member 43 include bolt insertion holes 44K and 43K through which the connection bolts 62 of the connection tool 60 are inserted vertically.

  The wall panel 50 has a wall frame assembly 54 formed by pillars 51 and a lower frame 52 made of wood, and a wall material 55 is stretched on the outer surface of the wall frame assembly 54. In addition, the lower frame 52 of the wall panel 50 includes a bolt insertion hole 52K through which a connection bolt 62 of a connection tool 60 described later is inserted vertically.

  Hereinafter, the connection structure of the floor panel 40 and the wall panel 50 in the production factory of the building unit 30, in other words, the structure in which the column 51 of the wall panel 50 is erected on the floor panel 40 (with the floor panel 40 of the column 51). (Fastening structure) will be described. In these connection structures, the connection tool 60 is used. As shown in FIGS. 1 and 2, the connection tool 60 includes a rectangular washer 61 and a lower nut portion 62 </ b> A of the connection bolt 62 is attached to a long nut 63 welded to one end of the upper surface of the lower washer 61. Prepare by screwing. The connection tool 60 includes a lower washer 61 at the lower end portion, and includes an upper end screw portion 62B of the connection bolt 62 extending upward from the lower washer 61. The lower washer 61 includes a bolt insertion hole 61H for the anchor bolt 11 described above on the other end side that is separated from the long nut 63.

  In the building unit 30, the pillar 51 constituting the wall panel 50 is composed of a pair of adjacent left and right studs 51A and 51B, and a spacer 51S is interposed between the studs 51A and 51B to form a fixed interval. The box-shaped hardware 70 is built in the lower frame 52 of this interval. Here, the pillar 51 is a pillar body 51L in which the studs 51A and 51B and the spacer 51S are combined. The left and right side surfaces (side surfaces 71 and 72) of the box-shaped hardware 70 are in contact with the left and right studs 51A and 51B of the column main body 51L without a gap.

  As shown in FIGS. 1 and 2, the box-shaped hardware 70 is formed in a rectangular box shape including four sides of left and right side portions 71 and 72, an upper surface portion 73, and a lower surface portion 74. The box-shaped hardware 70 as a single unit forms a hollow portion 75 between two surfaces of both side surface portions 71 and 72 facing left and right (and between two surfaces of an upper surface portion 73 and a lower surface portion 74 facing vertically). .

  The box-shaped metal piece 70 of this embodiment is a welded body of two U-shaped plate members, and the upper and lower bent portions of each plate member are overlapped and welded, and the overlapped bent portions are upper surfaces. A portion 73 and a lower surface portion 74 are provided. Note that the box-shaped hardware 70 may be formed of a rectangular tube material and have an endless circular shape.

  The box-shaped hardware 70 is provided with a bolt insertion hole 74H for the connection bolt 62 of the connection tool 60 described above at the bottom formed by the lower surface portion 74. The box-shaped hardware 70 is held by two upper and lower pins 76 inserted through the pair of studs 51A and 51B of the column main body 51L being inserted through two opposing surfaces of both side surface portions 71 and 72. The upper end threaded portion 62B of the connecting bolt 62 of the connecting tool 60 that is incorporated and extended on the floor panel 40 side as described later is inserted into the bolt insertion hole 74H at the bottom of the box-shaped hardware 70, and this upper end threaded portion 62B. The flat washer 77 is inserted into the insertion end of the, and the nut 78 is further screwed, whereby the floor panel 40 and the column 51 of the wall panel 50 are connected and joined.

  The connecting device 60 is assembled in the floor panel 40 as follows. First, the floor panel 40 is turned over so that the lower surface of the joining frame member 44 faces upward, and the connecting bolt 62 of the connector 60 is inserted into the bolt insertion holes 44K and 43K provided in the joining frame member 44 and the floor member 43. Is inserted. Further, the lower washer 61 is placed on the counterbore 45 on the lower surface of the joining frame member 44 while the bolt insertion hole 61H provided on the lower washer 61 of the connector 60 is aligned with the bolt insertion hole 44H provided on the joining frame member 44. In the retracted state, the lower washer 61 is fixedly attached to the joining frame member 44 with set screws (not shown) inserted through screw holes (not shown) at the four corners of the lower washer 61. The upper end threaded portion 62B of the connecting bolt 62 penetrates the bolt insertion hole 43K provided in the floor surface material 43 of the floor panel 40 and protrudes outward (FIG. 6).

  Subsequently, the lower frame 52 of the wall panel 50 is set on the outer edge of the floor surface material 43 in the floor panel 40. At this time, the upper end threaded portion 62B of the connecting bolt 62 protruding upward from the floor material 43 is inserted into the bolt insertion hole 74H at the bottom of the frame-shaped metal fitting 70 already disposed on the lower frame 52 in the wall panel 50. Is done. A rectangular flat washer 77 is set around the upper end threaded portion 62B of the connecting bolt 62 inserted into the bolt insertion hole 74H of the frame-shaped metal fitting 70, and a nut 78 is screwed to the upper end threaded portion 62B of the connecting bolt 62. Thereby, the upper end thread part 62B of the connection bolt 62 in the connection tool 60 extended from the side of the frame material 44 for joining in the lower end part of the floor panel 40 in the building unit 30 to the upper direction of the floor surface material 43 in the floor panel 40. However, it passes through the frame-shaped metal fitting 70 inside the wall panel 50 and is screwed to a nut 78 set on the frame-shaped metal fitting 70 to form the building unit 30 in which the floor panel 40 and the wall panel 50 are connected. become.

  The building unit 30 formed in this way is installed on the foundation 10. That is, the lower washer 61 provided at the lower end of the connector 60 incorporated in the floor panel 40 in the building unit 30 as described above is used for joining the lower end of the floor panel 40 as shown in FIGS. It is placed on the foundation 10 in a state of being housed in a counterbore 45 formed on the frame member 44 and attached to the joining frame member 44.

  At this time, the anchor bolt 11 protruding above the foundation 10 passes through the bolt insertion hole 61H provided in the lower washer 61 of the connector 60 and the bolt insertion hole 44H provided in the joining frame member 44 in the floor panel 40, A washer 13 is set around the penetrating end, and a nut 14 is screwed onto the penetrating end. Thereby, the anchor bolt 11 is fastened to the lower washer 61 of the connector 60 and the joining frame member 44 at the lower end of the floor panel 40.

  However, in the building unit 30, as shown in FIG. 3 to FIG. 5, from a wood or the like so as to fill in the hollow portion 75 of the box-shaped hardware 70 in advance in the factory between the two opposing surfaces 71 and 72. The thick wood 80 is loaded. Therefore, the thickness of the paddle 80 is approximately the same size as the facing distance between the side surfaces 71 and 72 of the box-shaped hardware 70. The paddle 80 is provided with upper and lower cutouts 81 and 82 for avoiding the interference of the upper and lower pins 76 described above.

  In addition, in the building unit 30, the connection of the connecting bolt 62 in the connecting tool 60 in which the paddle 80 inserted into the hollow portion 75 of the box-shaped hardware 70 is inserted into the bolt insertion hole 74 </ b> H at the bottom of the box-shaped hardware 70. The upward movement of the nut 78 screwed to the insertion end is restricted. In this embodiment, a nut locking collar 90 is inserted around the tip of the connecting bolt 62 protruding from the nut 78 screwed to the insertion end of the connecting bolt 62 in the connecting tool 60, and this collar 90 is attached to the nut 78. In the state where it is seated on the upper surface of the box-shaped metal piece 70, the hollow wood 75 is loaded into the hollow portion 75. At this time, the lower surface of the paddle 80 is in contact with the upper surface of the collar 90 without a gap.

  Therefore, in the connection state of the floor panel 40 and the wall panel 50 using the connection tool 60 and the box-shaped hardware 70, the attachment procedure of the paddle 80 is as follows, for example.

  (1) The bolt locking collar 90 is inserted into the tip of the connecting bolt 62 protruding from the nut 78 screwed into the insertion end of the connecting bolt 62 in the connector 60 (FIG. 3A).

  (2) The paddle 80 is loaded into the hollow portion 75 of the box-shaped hardware 70 (FIGS. 3B and 4). The undercarriage 80 has its lower surface inserted into the upper end surface of the nut locking collar 90 without any gaps, and the left and right side surfaces are inserted into the two opposite surfaces of the opposite side surfaces 71 and 72 of the box-shaped hardware 70 without any gaps.

  (3) The column main body has two vertical positions on both side edges of the end face facing the outside of the hardwood 80 loaded in the hollow part 75 of the box-shaped hardware 70 (opposite to the face where the notches 81 and 82 are opened). The studs 53A and 51B on both sides of 51L are stopped by a tucker 53 (FIG. 5).

According to the present embodiment, the following operational effects can be obtained.
(a) A downward load is applied to the column main body 51L in which the box-shaped hardware 70 is built, and this downward load is transmitted to the box-shaped hardware 70 so as to face each other across the hollow portion 75 of the box-shaped hardware 70. Even if each of the surfaces is bent toward the hollow portion 75 in a curved shape, the paddle 80 loaded between the two surfaces prevents the bending deformation. Thereby, the strength improvement of the box-shaped hardware 70 can be aimed at.

  (b) When the box-shaped hardware 70 is joined to the column 51 by the pins 76 that are pierced by two opposing surfaces of the box-shaped hardware 70, the paddle 80 is formed by the presence of the notches 81 and 82. It can be loaded so as to fill the space between the two opposing faces of the box-shaped hardware 70.

  (c) The connecting bolt 62 extending from the floor panel 40 side is inserted into the bottom of the box-shaped metal piece 70, and the nut 78 is screwed to the insertion end, whereby the column main body 51L and the floor panel 40 are connected to the box. It is reliably joined via the metal piece 70.

  (d) The hardwood 80 loaded so as to fill the two opposing surfaces of the box-shaped hardware 70 is screwed to the insertion end of the connecting bolt 62 inserted into the bottom of the box-shaped hardware 70 of the above-mentioned (c). The upward movement of the nut 78 is restricted. Therefore, it is possible to prevent loosening due to vibration of the nut 78 screwed to the connecting bolt 62 and eliminate the need for reconfirmation at the site.

  (e) In the building unit 30 in which the column 51 is erected on the floor panel 40 as the lower structure, the above-described (a) to (d) can be realized.

  The embodiment of the present invention has been described in detail with reference to the drawings. However, the specific configuration of the present invention is not limited to this embodiment, and even if there is a design change or the like without departing from the gist of the present invention. It is included in the present invention. For example, the pillar of the present invention is not limited to the one constituting the wall panel.

  Further, the lower structure on which the pillar of the present invention is erected is not limited to the lower floor panel, but may be an upper floor panel. Moreover, the lower structure on which the pillar of the present invention is erected is not limited to a floor panel.

  Moreover, the fastening structure with the lower structure of the pillar of the present invention is not limited to a building unit, and can be widely applied to general buildings.

  ADVANTAGE OF THE INVENTION According to this invention, the intensity | strength improvement of the pillar formed by incorporating a box-shaped hardware in a pillar main body can be aimed at.

  Further, according to the present invention, in the fastening structure with the lower structure of the column in which the box-shaped hardware is built in the column main body, the nut that is screwed to the bolt inserted through the bottom of the box-shaped hardware is prevented. Planning, and reconfirmation on site can be made unnecessary.

30 Building unit 40 Floor panel (under structure)
50 Wall panel 51 Column 51L Column body 62 Connecting bolt 70 Box-shaped hardware 75 Hollow portion 76 Pin 78 Nut 80 Paddle 81, 82 Notch 90 Nut locking collar

Claims (5)

Box-shaped hardware is built in the pillar body,
A pillar that is filled with paddles so as to fill in the space between two opposing faces of a box-shaped hardware. The column main body and the box-shaped hardware are joined by pins that are pierced by two opposing surfaces of the box-shaped hardware,
The pillar according to claim 1, wherein the support is provided with a notch that avoids interference with the pin.   The pillar according to claim 1 or 2 is erected on the lower structure, a bolt extending from the lower structure side is inserted into the bottom of the box-shaped hardware, and a nut is screwed into the insertion end. Fastening structure with the lower structure of the pillar formed by joining the pillar and the lower structure.   The fastening structure with the lower structure of a pillar according to claim 3, wherein the paddle is configured to restrict upward movement of a nut screwed into a bolt insertion end.   A building unit in which a column to which a fastening structure of a column according to claim 3 or 4 and a lower structure is applied is erected on a floor panel as a lower structure.

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