JP2007146631A - Connecting hardware and reinforcing structure of building - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a connecting hardware and a reinforcing structure of a building for ensuring aseismatic reinforcement of an existing building without impairing appearance, simplifying repair work and applicable also to reinforcement of a new building. <P>SOLUTION: One side of a pipe member is pressed by a press to form a plate-like part 3, and the other side is made a cylindrical part 10 while shifting an axis to form a bent part 20 in between. A plurality of through holes 6, 6 are bored in the plate-like part 3, and the tip of the cylindrical part 10 is enlarged to form a diameter enlarged part 13. Thread is formed on an inner surface 12 to form a threaded cylindrical part 10, thus forming the connecting hardware 1. A hold-down hardware 40 is fixed to a side face 27 of a foundation 25 of the existing building, and the connecting hardware 1 is fixed to a column 32 and a sill 30 from an external wall material 35 of the existing building. A hexagon head bolt 46 loosely inserted into a bolt insertion part 42 of the hold-down hardware 40 is screwed and bound to the threaded cylindrical part 10 to constitute an aseismatic reinforcing structure 50. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention is a wooden structure, a connection hardware for joining members such as foundations, foundations, pillars, beams, etc., and particularly a building reinforcement structure applied to the reinforcement of an existing building or a new building About.

  Conventionally, a metal fitting for connection having a plate shape on one side and a screw cylinder on the other side has been used as a turnbuckle (Patent Documents 1 and 2).

In addition, when a wooden structure is subjected to seismic reinforcement, a concrete base and a pillar or foundation are reinforced with metal fittings. In one method, a cloth foundation fixing member is fixed to a side surface of the cloth foundation, and a bolt member is obliquely screwed into a column from the cloth foundation fixing member (Patent Document 3). In another method, the lower plate is fixed to the foundation, the upper plate is fixed to the vertical column (column) and the horizontal column (base), and both plates are connected by a spring-attached joint bolt (Patent Document). 4).
JP 2002-146919 A Akira 61-78910 JP 2004-11231 A JP-A-10-169210

  In the above-mentioned conventional technology, the turnbuckle itself is processed so that it is fixed to other parts, and the processing direction of the screw hole is determined, and the hardware used for joining columns, beams, foundations and foundations In addition, the hardware for the turnbuckle could not be applied as it is. Further, conventionally, it has been difficult to process a pipe material having a large material thickness used for the application used for the connection in this case.

  Further, the conventional reinforcing structure cannot be applied when the number of protrusions from the foundation, foundation, and pillar increases, the appearance is unsightly, and the strength of the foundation itself is insufficient.

  However, this invention has a plate-like part on one side and a screw cylinder on the other side, and the connecting hardware is formed by shifting the axis of the plate-like part and the axis of the screw-like part. The point was solved. Moreover, since the plate-like portion is fixed to the column using this hardware with the screw-like portion facing downward, the problems of the conventional earthquake-resistant structure have been solved.

That is, the present invention provides a metal fitting for connection having a plate-like portion having a through hole formed on one side and a screw-like portion having a screw hole formed on the inner surface on the other side. It is the metal fitting for connection characterized by having performed.
(1) One side of the pipe material was crushed to form the plate-like part, and a thread was formed on the inner surface of the other side of the pipe material to form a screw-like part.
(2) The axis of the plate-like portion and the axis of the screw-like portion are formed so as to be shifted, and the screw-like portion is positioned on the other surface side of the upper portion of the plate from the extended surface of one surface of the plate-like portion. It was.

According to another aspect of the present invention, there is provided a metal fitting for connection having a plate-like portion having a through hole formed on one side and a screw-like portion having a screw hole formed on the inner surface on the other side. This is a connection hardware characterized by the above.
(1) When the thickness t ₁ of the screw-like portion and the thickness t ₂ of the plate-like portion are set,
t ₂ = 2 × t ₁
It was.
(2) The axis of the plate-like portion and the axis of the screw-like portion are formed so as to be shifted, and the screw-like portion is positioned on the other surface side of the upper portion of the plate from the extended surface of one surface of the plate-like portion. It was.

  According to another aspect of the present invention, there is provided the connection hardware according to the above, wherein a diameter-enlarged portion is formed by expanding an opening edge of the screw-like portion.

According to another invention, in a wooden structure in which a pillar is erected by forming a foundation on a concrete foundation, the reinforcement structure for a building is provided with seismic reinforcement as follows. It is.
(1) One side of the pipe material was crushed to form the plate-like part, and a thread was formed on the inner surface of the other side of the pipe material to form a screw-like part. The axis of the plate-like portion and the axis of the screw-like portion are formed so as to be shifted, and the screw-like portion is positioned on the other surface side of the plate-like portion from the extended surface of one surface of the plate-like portion. A through hole is formed in the plate-like portion to constitute a connection hardware.
(2) In the existing building, “the pillar and / or base from which the outer wall has been removed beforehand” or “to the outer surface of the outer wall”, abut the plate-like portion of the connection hardware, and face the screw-like portion downward. It installs, hits screws from the said through-hole, and fixes the said plate-shaped part to the said base and / or a pillar.
(3) The screw from the fixing means fixed to the foundation was screwed and fastened to the screw-like portion of the connection hardware.

Yet another invention relates to a reinforcing structure for a building in which a base is formed on a concrete base and a pillar is erected, and the structure is reinforced with earthquake resistance as follows. is there.
(1) One side of the pipe material was crushed to form the plate-like portion, and a thread was formed on the inner surface of the other side of the pipe material to form a screw-like portion. The axis of the plate-like portion and the axis of the screw-like portion are formed so as to be shifted, and the screw-like portion is positioned on the other surface side of the plate-like portion from the extended surface of one surface of the plate-like portion. A through hole is formed in the plate-like portion to constitute a connection hardware.
(2) One of “vertical structure material including columns” or “horizontal material including foundations and beams” is disposed through the fixing means formed with screw portions on both sides, and the other A plate-like portion of the connection hardware is brought into contact with a side surface, the screw-like portion is installed toward the screw portion of the fixing means, the screw portion is screwed into the screw-like portion, and the through-hole is inserted. Screws are used to fix the plate-like part to the vertical structure member or horizontal member.

The fixing means in the above is an apparatus that can be fixed to a concrete base, and is arbitrary as long as it has a structure having a thread upward. Usually, the following (1) and (2) are used.
(1) Use anchor bolts embedded in the legs of the foundation and screw the upper end thread.
(2) Fix the so-called hole-down hardware plate to the side of the foundation with clip anchors. A bolt is attached to the hole-down hardware with the shaft facing upward, the head is locked, and the shaft portion of the bolt is screwed.

  In addition, the connection hardware described above is suitable for reinforcement repair work or new construction, and the “base” and “base and / or pillar” are optimally joined, but the same as the conventional battledore bolt and hole down hardware. It can be applied to new construction by the method of use, or it can be used for other joints such as “joint of columns and beams” other than the foundation.

  Since the present invention comprises a plate-like portion having a through hole and a screw-like portion, and is formed by shifting the axis, the plate-like portion is fixed to the pillar and the base, and the connecting hardware is fixed by the fixing means fixed to the foundation. Therefore, it is possible to securely join the “foundation” and the “base and / or column” and to greatly reduce the protrusion to the outer wall side. Therefore, if it is used for renovation of an existing building, there is an effect that it is possible to construct a seismic reinforcement structure without greatly deteriorating the appearance. Moreover, since there are no outward projections, there is no risk of damaging people or objects. Moreover, since there is no protrusion and the structure is simple, there is no fear of peeling off the plating or coating, and the performance can be maintained for a long time.

  Further, since “the screw-like portion is positioned on the other surface side of the plate upper part from the extended surface of one surface of the plate-like portion”, the screw (bolts, etc.) from the fixing means is screwed into the screw-like portion. In this case, there is an effect that the operation is easy. Further, the same effect can be obtained when the outer wall material is removed and the connection hardware is attached to the base and / or the pillar.

  In addition, there is an effect that various reinforcing structures can be taken regardless of the strength of the foundation.

  In addition, when the pipe material is pressed to form the plate-like part, welding is not necessary in the process of manufacturing the connection hardware, so that the appearance is good and the pipe material itself is painted or plated. Thus, painting or plating can be omitted.

  The connection hardware 1 of the present invention is manufactured by the following procedure.

(1) Press one side 2a (about 34 mm, about 4/5 of the whole) of the pipe material (about 440 mm) of material thickness t ₁ (about 3.5 mm) with a press so that the inner surface is in close contact. The plate-like portion 3 (= thickness t ₂ ) is formed, and the other side 2b (remaining portion) is defined as the tubular portion 10 (= thickness t ₁ ). Subsequently, or simultaneously, the bent portion 20 is formed by bending the vicinity of the boundary between the plate-like portion 3 and the tubular portion 10 in the thickness direction of the plate-like portion 3 (the direction indicated by the arrow 22 in FIG. 1A). Thus, the central axis 7 of the plate-like part 3 and the central axis 17 of the cylindrical part 10 are shifted. The plate-like portion 3 and the cylindrical portion 10 are integrally formed via a bent portion 20.

(2) Subsequently, a plurality of through holes 6 are formed in the plate-like portion 3 in a zigzag manner (FIGS. 1B and 1C). In this case, the arrangement of the through holes 6, 6 is preferably staggered, but can also be arranged in parallel (not shown).

(3) Also, at the same time or before and after (2), the tip of the cylindrical portion 10 is widened to form the enlarged diameter portion 13, and a thread (screw) is formed on the inner surface 12 of the cylindrical portion 10. A screw-shaped part (cylindrical part) 10 is used. In this state, the outer surface 11 (including the enlarged diameter portion 13) on the one surface side of the screw-like portion 10 is located on the other surface 5 side of the extended surface 4 a of the one surface 4 of the plate-like portion 3.

(4) In this state, the whole is painted or plated to form the connection hardware 1 of the present invention (FIGS. 1 and 2). Here, t ₂ is in the double thickness of the original material thickness t _1. That is, the thickness t ₁ of the threaded tubular portion _10, when the thickness t ₂ of the plate-like portion 3,
t ₂ = 2 × t ₁
It consists of

(5) Other Embodiments In the above embodiment, the pipe material can be pressed using a pipe material in which a thread is formed on the inner surface in advance. In this case, the step of forming the thread of (3) can be omitted, and the last painting or plating step can be omitted if a pipe material that has been previously painted or plated is used.
Moreover, in the said embodiment, the length and thickness of the screw-shaped part 10 and the plate-shaped part 3 are suitably selected and formed with the proof stress calculated | required.
Moreover, in the said embodiment, although the last of a coating or plating process is desirable, it is arbitrary according to the performance calculated | required.
Moreover, the manufacturing method of the metal fitting 1 for connection is not restricted to the said method, As long as the same structure can be manufactured, it is arbitrary.

  The earthquake-proof reinforcement structure of this invention is demonstrated based on FIG.

(1) A base 30 is fixed to the upper surface 26 of the concrete foundation 25, and a pillar 32 is erected and fixed on the base 30. An outer wall member 35 is fixed to the outer wall side of the pillar 32 and the base 30 via a trunk edge 34 to constitute an existing building 37 (FIG. 3A). The base 30 and the base 25 are fixed by anchor bolts, or the base 30, the base 25, and the pillar 32 are fixed by ordinary means (not shown), such as fixed by a so-called hole-down hardware.

  Further, the upper part of the pillar 32 has a normal structure and is configured up to the roof, and necessary interiors such as a floor and an inner wall are provided (not shown). In the figure, 38 is a drainer.

  The concrete base 25 is composed of a main body portion 25a corresponding to the height and size of the base 30, and a leg portion 25b formed wide at the lower end of the main body portion 25a. In this existing building 37, the foundation 25 is configured with a structure having sufficient strength, but it is assumed that the joining of the foundation 30 and the upper structure and the foundation 25 does not have sufficient seismic strength.

(2) The plate portion 41 of the hole-down hardware 40 is applied to the side surface 27 of the main body portion 25a of the foundation 25, and the foundation 25 and the plate portion 41 are fixed by the grip anchors 44 and 44. In this state, the U-shaped bolt insertion portion 42 of the hole-down hardware 40 is opened up and down.

(3) Before or after or simultaneously with (2), the plate-like portion 3 of the connection hardware 1 is brought into contact with the outer surface of the outer wall member 35, and the screw-like portion 10 is positioned below the lower surface 31 of the base 30, The opening of the screw-shaped portion 10 is directed downward. Subsequently, square bit screws 48 and 48 are driven from the through holes 6 and 6 of the plate-like portion 3 toward the pillar 32 and the base 30 to fix the “plate-like portion 3” and “the pillar 32 and the base 30”. . At this time, it is desirable that at least one of the through-holes 6, 6 of the plate-like portion 3 is positioned at the base 30 and the square bit screw 48 is driven into the base 30.

(4) Subsequently, the hexagon bolt 46 is inserted into the bolt insertion portion 42 of the hole-down hardware 40 from below (the hexagon bolt 46 is loosely inserted into the bolt insertion portion 42), and the head 47 of the hexagon bolt 46 is attached. The front end portion (thread portion) is engaged with the lower edge 42 a of the bolt insertion portion 42, and is screwed and fastened to the threaded cylindrical portion 10 of the connection hardware 1. As a result, the “connecting hardware 1 fixed to the pillar 32 and the base 30” and the “hole-down hardware 40 fixed to the foundation 25” are firmly fixed via the hexagon bolt 46, and the “base 30 and pillar 30” are fixed. 32 and the foundation 25 ”are firmly connected, and the earthquake-proof reinforcement structure 50 is constructed (FIG. 3B). At this time, since the enlarged diameter portion 13 is formed in the screw-shaped portion 10, the hexagon bolt 46 can be easily inserted.

  At this time, since the central shafts 7 and 17 of the connecting hardware 1 are displaced via the bent portion 20, the cylindrical portion 10 contacts the outer wall member 35, the base 30, the foundation 25, and the like. The plate-like portion 3 can be firmly attached to the outer wall member 35 by contacting, etc., and the attachment operation is not hindered. Further, since the screw-like portion 10 is surely lifted from the side surface 27 of the foundation 25, the mounting work of the hexagon bolt 46 can be ensured, and the hole-down hardware 40 and the connection hardware 1 can be securely fixed.

(5) The connection hardware 1 is preferably installed on all the pillars 32 and 32, but can be applied only to the selected pillars 32 and 32 depending on the required performance. Moreover, it calculates by the material thickness size of the metal fitting 1 for connection, the magnitude | size intensity | strength of the hole down metal fitting 40, and the intensity | strength for the calculated | required increase. In order to prevent an unbalanced pulling force, they are arranged at a predetermined interval in the outer circumferential direction.

(6) Other Embodiments In the above-described embodiment, the connection hardware 1 is brought into contact with the outer surface of the outer wall member 35 and the outer wall member 35 is driven through the outer wall and a square bit screw is driven into the pillar 32 or the like. When the fixing is insufficient and the strength is insufficient, the outer wall member 35 and the trunk edge 34 are removed, and the plate-like portion of the connection hardware 1 is brought into contact with the “side surface 32a of the pillar 32 and the side surface 30a of the base 30”. (Not shown). Also in this case, since the central shafts 7 and 17 of the connecting hardware 1 are shifted from each other via the bent portion 20, the connecting portion 1 is connected to the side surface 27 of the foundation 25. Therefore, as in the case of fixing to the outer wall member 35, it is firmly attached and can be easily operated.

  In this case, since the body edge 34 and the outer wall member 35 are newly attached, the plate-like portion 3 of the connection hardware 1 is hidden by the outer wall member 35 and 35, so that the appearance is further improved.

  Moreover, in the said Example, although the hole down metal fitting 40 was used, if it is a structure which can be fixed to the side surface 27 or the leg part 25b of the foundation 25, and can be joined with the screw-shaped part 10 of the metal fitting 1 for connection, Hardware can also be used (not shown).

  In addition, this embodiment can be applied to a similar part of a new structure.

  Next, the implementation of another seismic reinforcement structure will be described based on FIG. This seismic reinforcement structure 50 is an example applied when the strength of the foundation 25 is not sufficient, such as a lack of reinforcing bars in the foundation 25.

(1) Similar to the first embodiment, an existing building is configured.
That is, the base 30 is fixed to the upper surface 26 of the concrete base 25, and the pillar 32 is erected and fixed on the base 30. An outer wall member 35 is fixed to the outer wall side of the pillar 32 and the base 30 via a trunk edge 34 to constitute an existing building 37 (FIG. 3A). The base 30 and the base 25 are fixed by anchor bolts, or the base 30, the base 25, and the pillar 32 are fixed by ordinary means (not shown), such as fixed by a so-called hole-down hardware.
Further, the upper part of the pillar 32 has a normal structure and is configured up to the roof, and necessary interiors such as a floor and an inner wall are provided (not shown). In the figure, 38 is a drainer.
The concrete base 25 is composed of a main body portion 25a corresponding to the height and size of the base 30, and a leg portion 25b formed wide at the lower end of the main body portion 25a.

(2) The embedding hole 20 is formed in the leg portion 25b of the foundation 25 in accordance with the installation position of the connection hardware 1 (that is, the embedding position of the anchor bolt 52). In this case, in order to ensure the necessary embedment depth of the anchor bolt 52, the leg portion 25b may be penetrated.

(3) Subsequently, the upper end portion 53 of the anchor bolt 52 is screwed into the screw-shaped portion 10 of the connection hardware 1 by a predetermined amount to connect the connection hardware 1 and the anchor bolt 52. Here, the anchor bolt 52 to be used has a lower end bent into an S-shape so that the pulling strength can be enhanced even with a short embedding depth.

(4) Subsequently, the lower end portion 54 of the anchor bolt 52 is inserted into the embedded hole 56, and the plate-like portion 3 of the connection hardware 1 is brought into contact with the outer wall member 35. The screw-like portion 10 is positioned below the lower surface 31 of the base 30, and the opening edge 14 of the screw-like portion 10 is directed downward. Moreover, it is desirable to lock the lower end portion 54 of the anchor bolt 52 to the structural reinforcing bar 57 of the foundation 25 or to the structural reinforcing bars 57 and 57 newly installed in the buried hole 56 (FIG. 4B).

(5) Subsequently, in the same manner as in the first embodiment, the square bit screws 48 and 48 are driven from the through holes 6 and 6 of the plate-like portion 3 toward the pillar 32 and the base 30 to obtain “plate-like portion 3”. The “pillar 32 and base 30” are fixed. At this time, it is desirable that at least one of the through-holes 6, 6 of the plate-like portion 3 is positioned on the base 30 and the square bit screw 48 is driven into the base 30.

(6) Next, or before (5), place concrete in the buried hole 56. If the concrete is solidified, the seismic reinforcement structure 50 of the present invention is formed (FIG. 4B).

(7) Other Embodiments In the above embodiment, as in the first embodiment, when the outer wall member 35 and the trunk edge 34 are not sufficiently fixed and the strength is insufficient, the outer wall member 35 and the trunk edge 34 are removed. The plate-shaped part of the metal fitting 1 for removal and connection can be brought into contact with the “side surface 32a of the pillar 32 and the side surface 30a of the base 30” (not shown). Also in this case, the position of the buried hole 56 is adjusted so that the anchor bolt is arranged vertically.

  In the above embodiment, the buried hole 56 is formed. However, when the structural reinforcing bar is not sufficiently provided in the leg 25b of the foundation 25 or the structural reinforcing bar is not contained, the entire leg 25b of the foundation 25 is removed. Then, digging up, adding the necessary number of structural reinforcing bars 57, 57, and placing concrete (not shown).

  In addition, this embodiment can be applied to a similar part of a new structure.

  Another embodiment of the present invention will be described with reference to FIGS. This embodiment is an embodiment related to reinforcement of reinforcement or reinforcement of a new structure.

(1) In this embodiment, the connection hardware 1 configured as described above and the connection hardware 1a using the screw of the screw-like portion 10 as a reverse screw are used in combination (FIG. 5).
Moreover, the screw 60 which formed the screw parts 62 and 62a in the both sides of the rod-shaped base 61 is used as a fixing member. The screw portion 62 a is formed as a reverse screw with respect to the screw portion 62. In addition, flat portions 63 and 63 are formed inside the screw portions 62 and 62a at both ends of the base portion 61, respectively (FIG. 5B).

(2) A through-hole 33 is formed in the column 32 in a direction perpendicular to the axial direction (axial direction of the beam) at a joint where the column 32 and the beams 65 and 65a are joined. The base portion 61 of the screw 60 is passed through the through-hole 33, and the screw portions 62 and 62a are positioned on both sides (beams 65 and 65a) of the column 32.

(3) Subsequently, the connection hardware 1 is positioned on the beam 65 side (screw portion 62 side), the connection hardware 1a is positioned on the beam 65a side (screw portion 62a side), and the thread portion 62 of the screw 60 is connected. The screw-like part 10 of the hardware 1 is screwed, and the screw-like part 62 of the screw 60 is screwed with the screw-like part 10 of the connection hardware 1. At this time, since the screw portion 62 (or the screw-like portion 10) and the screw portion 62a (or the screw-like portion 10a) are reverse screws, the screw 60 is rotated to one side so that both sides are once turned on. Can be tightened. In addition, by holding the connection hardware 1 and 1a and holding and rotating the flat portions 63 and 63 with a spanner or the like, the screw portions 62 and 62a and the screw-like portions 10 and 10a can be used without using a special tool. Can be easily locked.

(4) Subsequently, the plate-like portion 3 of each connection hardware 1, 1 a is brought into contact with the side surfaces 66, 66 of the beams 65, 65 a, and screws are inserted into the through holes 6, 6 in the same manner as in the above embodiment. By hitting, the connection hardware 1 and 1a are fixed to the beams 65 and 65a to constitute the earthquake-proof reinforcement structure 50 (FIGS. 5A and 5B).

(5) In the above-described embodiment, the connection hardware 1 and 1a are used for so-called double pulling, but can be used for single pulling as well as the so-called battledore for the bolts (FIG. 6). A through-hole 67 is drilled in the side surface 66 of one beam 65a at a joint where the beams 65, 65a, 65b are joined to the pillar 32 in three directions in a plane (FIG. 6B). The plate-like portion 3 of the bonding hardware 1 is positioned on the side surface 66 of the screw, and the opening of the screw-like portion 10 is arranged toward the through hole 67. Subsequently, a washer 49 is attached to the hexagonal bolt 47 in the through hole 66, and the threaded portion 47 a is inserted into the threaded tubular portion 10. The plate-like portion 3 is fixed to the side surface 66 of the beam 65b with screws, and the hexagon bolt 47 is fastened to fix the hexagon bolt 47 to the connection hardware 1. As described above, the seismic reinforcement structure 50 is constructed (FIGS. 6A and 6B).

(6) In the above embodiment, the present invention is applied to the joint between the column and the beam. However, the present invention can be similarly applied to the joint between the vertical structural member other than the column and the horizontal member other than the beam (not shown). ). In the above embodiment, the through hole is formed in the column 32 (vertical structure material). However, the through hole is formed in the beam 65 (horizontal material) and the screw 60 is inserted, so that the column 32 (vertical structure material). It is also possible to fix the plate-like parts 3 and 3 of the connection hardware 1 and 1a to the side surfaces (not shown).

(7) This embodiment can be applied to either reinforcement of an existing structure or reinforcement of a new structure.

FIG. 2A is a front view, FIG. 2B is a left side view, and FIG. 3C is a right side view of the connection hardware of the embodiment of the present invention. Similarly, (a) is a cross-sectional view taken along line AA in FIG. 1 (b), (b) is a bottom view, (c) is a plan view, and (d) is a cross-sectional view taken along line BB. (A) is a longitudinal cross-sectional view of the existing building, (b) is a longitudinal cross-sectional view of the reinforcement structure of this invention which reinforced the existing building. (A) is a longitudinal cross-sectional view of the existing building, (b) is a longitudinal cross-sectional view of the reinforcement structure of this invention which reinforced the existing building. (A) is the Example which used the connection metal fitting of this invention for another reinforcement structure, (a) is a top view, (b) is the front view which fractured | ruptured one part. (A) is the Example which used the connection metal fitting of this invention for another reinforcement structure, (a) is a front view, (b) is the top view which fractured | ruptured one part.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Connection hardware 2a One side 2b of connection metal 3 Other side of connection metal 3 Plate-shaped part 4 One surface of the plate-shaped part 4a One extended surface 5 Another surface of the plate-shaped part 6 Through-hole 7 Central axis of plate-shaped part 10, 10a Screw-shaped part (cylindrical part)
DESCRIPTION OF SYMBOLS 11 Outer surface 12 of one side 4 of a screw-like part 12 Inner surface 13 of a screw-like part 14 Diameter expansion part 14 of a screw-like part 17 Open edge 17 of a screw-like part 17 Top surface 27 Base side surface 30 Base 30a Base side surface 32 Column 32a Column side surface 33 Column through-hole 34 Trunk edge 35 Outer wall material 37 Existing building 38 Drainage 40 Hole-down hardware 41 Hole-down hardware plate part 42 Hole-down hardware Bolt insertion part 44 Clip anchor 46 Hexagon bolt 48 Square bit screw 50 Seismic reinforcement structure 52 Anchor bolt 53 Anchor bolt upper end 54 Anchor bolt lower end 56 Embedded hole 60 Screw (fixing means)
61 Screw bases 62, 62a Screw threads 63 Screw flat portions 65, 65a, 65b Beam 66 Beam side surface 67 Beam through-hole

Claims (5)

A metal fitting for connection having a plate-like part with a through hole formed on one side and a screw-like part with a screw hole formed on the inner surface on the other side has the following structure. Hardware for connection.
(1) One side of the pipe material was crushed to form the plate-like part, and a thread was formed on the inner surface of the other side of the pipe material to form a screw-like part.
(2) The axis of the plate-like portion and the axis of the screw-like portion are formed so as to be shifted, and the screw-like portion is positioned on the other surface side of the upper portion of the plate from the extended surface of one surface of the plate-like portion. It was. A metal fitting for connection having a plate-like part with a through hole formed on one side and a screw-like part with a screw hole formed on the inner surface on the other side has the following structure. Hardware for connection.
(1) When the thickness t ₁ of the screw-like portion and the thickness t ₂ of the plate-like portion are set,
t ₂ = 2 × t ₁
It was.
(2) The axis of the plate-like portion and the axis of the screw-like portion are formed so as to be shifted, and the screw-like portion is positioned on the other surface side of the upper portion of the plate from the extended surface of one surface of the plate-like portion. It was.   The metal fitting for connection according to claim 1 or 2, wherein the opening edge of the screw-shaped portion is widened to form an enlarged diameter portion. A reinforced structure for a building that is seismically reinforced in the following manner in a wooden structure in which a pillar is erected by forming a foundation on a concrete foundation.
(1) One side of the pipe material was crushed to form the plate-like part, and a thread was formed on the inner surface of the other side of the pipe material to form a screw-like part. The axis of the plate-like portion and the axis of the screw-like portion are formed so as to be shifted, and the screw-like portion is positioned on the other surface side of the plate-like portion from the extended surface of one surface of the plate-like portion. A through hole is formed in the plate-like portion to constitute a connection hardware.
(2) In the existing building, “the pillar and / or base from which the outer wall has been removed beforehand” or “to the outer surface of the outer wall”, abut the plate-like portion of the connection hardware, and face the screw-like portion downward. It installs, hits screws from the said through-hole, and fixes the said plate-shaped part to the said base and / or a pillar.
(3) The screw from the fixing means fixed to the foundation was screwed and fastened to the screw-like portion of the connection hardware. A reinforced structure for a building that is seismically reinforced in the following manner in a wooden structure in which a pillar is erected by forming a foundation on a concrete foundation.
(1) One side of the pipe material was crushed to form the plate-like part, and a thread was formed on the inner surface of the other side of the pipe material to form a screw-like part. The axis of the plate-like portion and the axis of the screw-like portion are formed so as to be shifted, and the screw-like portion is positioned on the other surface side of the plate-like portion from the extended surface of one surface of the plate-like portion. A through hole is formed in the plate-like portion to constitute a connection hardware.
(2) Arrange one of “vertical structure materials including pillars” or “horizontal materials such as foundations and beams” through the fixing means with threaded parts on both sides,
The plate-like portion of the connection hardware is brought into contact with the other side surface, the screw-like portion is installed toward the screw portion of the fixing means, and the screw portion is screwed into the screw-like portion,
Screws are hit through the through holes, and the plate-like portion is fixed to the vertical structural member or horizontal member.

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