JP2005068858A - Mounting structure of column and column fixture - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a mounting structure of a column and a column fixture, which prevents condensation liquid water occurring on a surface of the column fixture from being absorbed by the column from a cross section having high water absorbing power, to thereby effectively suppress decay of the wooden column. <P>SOLUTION: The column fixture (1) functions to connect an edge of the wooden column (20) to a foundation (15), a sill, a beam, or the other structure. The column fixture has a water cut off layer (16) interposed between the cross section (24) of the column (20) and a butt end bearing surface (12) of the column fixture (1), for cutting off movement of moisture from the column fixture (1) to the column (20). <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a mounting structure of a wooden column and a column fixing hardware that fixes the column to a foundation, foundation, beam, or other structure mainly in a wooden house, and in particular, measures against condensation that occurs on the surface of the column fixing hardware. About.

  Conventionally, as shown in FIG. 5, a column fixing hardware (1) is interposed between the foundation (15) other structure and the wooden column (20) and the end face (24) of the end of the column. A structure is known in which the foundation (15) and other structures are joined to the pillar (20) by the fixed hardware (1). However, under the floor of the building, temperature fluctuations are relatively small throughout the year due to the heat capacity of the ground, so that high temperature and high humidity outside air enters from the rainy season to early summer. Is prone to occur.

  Therefore, in the above structure, dew condensation also occurs on the surface of the column fixing hardware (1) that directly contacts the foundation (15), and the column (20) that contacts the column fixing hardware (1) becomes the hardware (1). Condensed water generated on the side will be absorbed mainly from the end (24). Also, due to the radiation cooling phenomenon from the low temperature foundation (15) surface, the end of the insertion plate (4) of the column fixing hardware (1) exposed on the surface of the column (20), especially the slit (21) part Condensed water may be generated, and the condensed water is absorbed into the inside of the pillar (20) from the end (24) through the side of the pillar (20) or directly from the side of the pillar (20). May be. Therefore, the wooden pillar (20) exposed to such an underfloor environment is easily decayed because the moisture content tends to increase.

  On the other hand, Patent Document 1 discloses a configuration that prevents the condensed water generated on the surface of the column fixing hardware from being absorbed by the column side. The column fixing hardware described in Patent Document 1 includes an L-shaped plate that includes a vertical portion that abuts on a column and a horizontal portion that abuts on a base that is joined to the lower end of the column. By interposing a waterproof sheet between the base and the horizontal part, the dew condensation water generated on the surface of the hardware is prevented from moving to the column side.

JP 2001-20380 A

  However, in the configuration disclosed in Patent Document 1, the dew condensation water generated on the surface of the column fixing hardware or the surface of the column or base is absorbed on the column side from the end of the pole through the surface of the column or base. There was a fear. That is, in the configuration of Patent Document 1, since no treatment has been performed on the end of the mouth having particularly high water absorption, it is still insufficient as a countermeasure against condensation.

  Therefore, the present invention solves the above-mentioned problems, prevents the condensed water generated on the surface of the column fixing hardware from being absorbed by the column side from the end surface having a high water absorption capacity, and prevents the decay of the wooden column. The purpose is to suppress effectively.

  In order to solve the above-mentioned problems, the mounting structure of the column and the column fixing hardware according to the present invention is a column fixing bracket for joining a wooden column end to a foundation, a base, a beam, or other structures. A water blocking layer for blocking the movement of moisture from the column fixing hardware side to the column side is interposed between the surface of the column fixing metal receiving the surface of the column fixing metal.

  Further, the column fixing hardware includes an insertion plate that protrudes from the mouthpiece receiving surface and is inserted into the slit of the column end portion, and the end portion of the insertion plate exposed to the slit portion on the side surface of the column is airtight. Covered with wood.

  Further, the water blocking layer is composed of a water blocking sheet sandwiched between a column mouth surface and the mouth receiving surface.

  Furthermore, the insertion plate passes through a slit formed in the water blocking sheet and is inserted into the slit at the column end.

  In addition, the water blocking layer is made of a foamed polyethylene resin. The hermetic material is made of an adhesive or a sealing material.

  In this invention, it is possible to prevent the dew condensation water generated on the surface of the column fixing hardware from moving to the column side by interposing a water blocking layer between the column end surface of the column and the surface of the column fixing hardware. Can do. In particular, since absorption from the mouth end having high water absorption is prevented, an increase in the moisture content inside the column can be suppressed as much as possible, and the decay of the wooden column can be suppressed.

  In addition, since the contact between the insertion plate and the outside air is blocked by covering the end of the insertion plate exposed in the slit part of the column side with an airtight material, condensation on the surface of the insertion plate is prevented. Can be prevented. That is, by suppressing the generation of condensed water itself at the slit portion on the side of the column, the condensed water is prevented from being absorbed from the side of the column through the side of the column or directly from the side of the column. Can be more effectively suppressed.

  Since the water blocking layer can be easily formed by sandwiching the water blocking sheet between the column end surface of the pillar and the metal end receiving surface of the metal, it is excellent in workability.

  Furthermore, since a slit is formed in the water blocking sheet, for example, by cutting, interference between the water blocking sheet and the insertion plate can be prevented by passing the insertion plate through the slit.

  In addition, by forming the water blocking layer from a foamed polyethylene resin having excellent water blocking properties and heat insulating properties, the effect of blocking condensed water can be exhibited better.

  Further, as the above airtight material, a general-purpose adhesive or sealing material is used, which contributes to a reduction in construction cost.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In the figure, (1) is a column fixing hardware used for joining the lower end of the wooden column (20) to the foundation (15). However, this column fixing hardware (1) may be used to join the lower end of the column (20) to the foundation installed on the upper surface of the foundation (15). In some cases, the upper end of the column (20) Alternatively, it may be used to join the lower end to a beam or other structure.

  The column fixing hardware (1) is composed of a base plate (2) installed on the upper surface of the foundation (15), and a mouthpiece receiving plate (3) for receiving the top end (24) of the column (20) above the base plate (2). And an insertion plate (4) projecting upward from the upper end receiving surface (12) of the upper end receiving plate (3).

  The base plate (2) and the mouthpiece receiving plate (3) have, for example, a rectangular shape, and are provided at intervals in the vertical direction so as to be parallel to each other. The base plate (2) and the mouthpiece receiving plate (3) are connected by, for example, welding by means of a spacer (5) having a substantially cross-shaped cross section extending along the column axis direction.

  The base plate (2) is installed such that a pair of opposite sides are along the longitudinal direction of the foundation (15). The base plate (2) is formed with bolt insertion holes (6), (6), and so on at four locations delimited by the four vertical pieces (13), (13), ... of the spacer (5). Of the four insertion holes (6), (6), two anchor holes (6), (6) located diagonally are anchor bolts (9) (9, 9 The upper end part exposed on the foundation (15) of) is inserted.

  Each anchor bolt (9) is provided with a washer (11) and a nut (10). The column fixing hardware (1) is fixed to the foundation (15) by tightening the nut (10) (10) from above. ) Fixed on top. In addition, the hole receiving plate (3) is provided with a working hole (7) at an appropriate position so that the nut (10) can be easily tightened.

  The insertion plate (4) is connected to the mouthpiece receiving surface (12) by welding, for example, so as to rise along the column axis direction. The insertion plate (4) is substantially rectangular and has a rounded corner at the upper end. Furthermore, a pair of pin holes (8) and (8) are arranged in parallel along the horizontal direction at the upper end of the insertion plate (4).

  On the other hand, a slit (21) into which the insertion plate (4) is inserted is formed at the lower end of the column (20). The slit (21) is formed so as to extend along the column axis direction and to penetrate between the side surfaces facing each other of the column (20). In addition, a pair of pin insertion holes (22) and (22) are provided at the lower end of the column (20) along the horizontal direction so as to correspond to the pin holes (8) and (8) of the insertion plate (4). Side by side. These pin insertion holes (22) and (22) are formed so as to be substantially orthogonal to the slit (21) and to penetrate between the side surfaces facing each other of the column (20).

  Drift pins (23) and (23) are inserted into the pin insertion holes (22) and (22) of the column (20) and the pin holes (8) and (8) of the insertion plate (4), respectively. 20) is attached to the column fixing hardware (1), and the column (20) and the foundation (15) are joined.

  Moreover, as shown in FIG.1 and FIG.3, the edge part of the insertion plate (4) exposed to the slit part of the side surface of a pillar (20) is covered with an airtight material (30). This airtight material (30) closes the opening of the slit (21) on the side of the column (20) after fixing the column (20) and the column fixing hardware (1) with the drift pins (23) and (23). Thus, it adheres to the inner surface of the slit (21). If the insertion plate (4) protrudes from the side of the column (20), the airtight material (30) is attached to the surface of the protruding part and the side of the column (20) near the slit (21). Just do it. Thereby, since the insertion plate (4) is shielded from outside air without being exposed even in the slit portion on the side surface of the column (20), no condensation occurs on the surface thereof.

  As the hermetic material (30), for example, an adhesive or a sealing material made of silicon or other resin is preferably used. For example, when an adhesive is used, the openings on both side surfaces of the slit (21) are filled and solidified, or when the insertion plate (4) is overhanging as described above, the exposed portion Put it evenly on the surface. In the case of a sealing material having a relatively high viscosity, the sealing material is filled so as to be pushed into the slit (21), or is attached so as to cover the outer surface of the protruding plate (4). Thus, construction at a low cost is possible by using a general-purpose adhesive or sealing material.

  In the state where the column (20) and the column fixing hardware (1) are attached as described above, the column (20) between the front end (24) of the column (20) and the front end of the column fixing hardware (1) (12). For example, a rectangular water blocking sheet (16) is interposed. A slit (17) is formed in the substantially central portion of the water blocking sheet (16) by, for example, cutting, so that the insertion plate (4) of the column fixing hardware (1) passes through the slit (17). It has become.

  In construction, as shown in FIG. 4, the water blocking sheet (16) is inserted into the slit (17) from above the column fixing hardware (1) installed on the foundation (15). ) Is placed on the mouthpiece receiving surface (12) while inserting, and the slit (21) at the lower end of the column (20) is inserted from above into the insertion plate (4) in that state. The end face (24) is placed on the water blocking sheet (16). Thus, the water blocking sheet (16) is sandwiched between the end face (24) and the end receiving face (12).

  In addition, the water blocking sheet (16) is formed to be approximately the same size as the lug receiving surface (12) of the column fixing hardware (1), and almost completely covers the lug receiving surface (12) in the construction state. It is supposed to hide.

  The water blocking sheet (16) is made of, for example, a foamed polyethylene resin, and blocks the movement of moisture from the column fixing hardware (1) side to the column (20) side. However, the material of the water blocking sheet (16) is not limited to the foamed polyethylene resin, and may be rubber or vinyl-based synthetic resin, or may be a hard plate-like material that is not a sheet shape. Be good. Furthermore, in some cases, the moisture is transferred from the column fixing hardware (1) side to the column side by filling a liquid watertight agent between the end surface (24) and the end surface (12) and curing it. It is also conceivable to form a water blocking layer that blocks water.

  In addition, the water blocking sheet (16) is an airtight material (30) similar to the above, in which the end face exposed in the state sandwiched between the mouthpiece surface (24) and the mouthpiece receiving surface (12) is attached to the surface. Covered by. As a result, it is possible to prevent the occurrence of condensation on the end face of the water blocking sheet (16), and the dew condensation water generated on the pillar fixing hardware (1) side passes along the end face of the sheet (16) side of the pillar (20). Can be prevented from moving to.

  The present invention is not limited to the above embodiment, and it is needless to say that many modifications and changes can be made to the above embodiment within the scope of the present invention.

It is a perspective view which shows the attachment structure of the pillar which concerns on one Embodiment of this invention, and a pillar fixed metal fitting. It is the sectional drawing similarly. It is the sectional drawing similarly. It is the exploded perspective view similarly. It is a perspective view which shows the attachment structure of the conventional pillar and a pillar fixed metal fitting.

Explanation of symbols

(1) Pillar fixing hardware
(4) Insertion plate
(12) Kiguchi receiving surface
(15) Basics
(16) Water blocking sheet
(17) Water blocking sheet slit
(20) Pillar
(21) Column end slit
(30) Airtight material

Claims (6)

Column fixing hardware for joining wooden column ends to foundations, foundations, beams and other structures, column fixing between the top of the column and the top receiving surface of the column fixing hardware receiving the top of the column A structure for mounting a column and a column fixing hardware, characterized in that a water blocking layer for blocking the movement of moisture from the metal side to the column side is interposed. The column fixing hardware includes an insertion plate that protrudes from the mouthpiece receiving surface and is inserted into a slit at the column end, and the end of the insertion plate exposed at the slit portion on the side surface of the column is made of an airtight material. The pillar and the fixed structure for mounting the pillar according to claim 1 which are covered. The structure for attaching a pillar and a column fixing hardware according to claim 1, wherein the water blocking layer is formed of a water blocking sheet sandwiched between a column end surface of the column and the end receiving surface of the column. The column and column fixing hardware attachment structure according to claim 3, wherein the insertion plate passes through a slit formed in the water blocking sheet and is inserted into a slit at the column end. 5. The structure for mounting a pillar and a pillar fixing hardware according to any one of claims 1 to 4, wherein the water blocking layer is made of a foamed polyethylene resin. 6. The structure for mounting a column and a column fixing hardware according to claim 2, wherein the airtight material is made of an adhesive or a sealing material.