JP2007100434A - Pedestal hardware - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a pedestal hardware used in wooden buildings, which hardware accepts a pillar in place accurately and resists well to earthquakes. <P>SOLUTION: The pedestal hardware 61 is installed on the lower end of a pillar 12. The pedestal hardware 61 comprises a tubular insert 62 to be inserted into the lower end of the pillar 12 and fixed there, a collar-shaped receiver 63 formed at the outer circumference of the root of the insert 62 for receiving the lower end face of the pillar 12, and an annular plate 64 with a simple opening 64a formed in the inner circumference of the tubular insert 62 to accept the insertion of an anchor bolt 31. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a column base metal used in a wooden construction, and more particularly to a column base metal that can accurately mount a column material at a predetermined position and has good earthquake resistance.

  It is known to connect a through column to a fabric foundation to improve earthquake resistance. As a column base hardware for that purpose, for example, there is a column base hardware described in Patent Document 1 below.

  This column base metal has a structure in which a cylindrical frame whose upper side is open is integrally formed in a direction perpendicular to the substrate, and is placed on a cloth foundation in which an anchor bolt is embedded, and a nut that is screwed to the anchor bolt. After tightening and fixing from above, the lower end portion of the through column is inserted into the cylindrical frame, and the cylindrical frame and the through column are fixed with bolts.

  According to the column base metal of Patent Document 1, the through column can be firmly connected to the cloth foundation via the column base metal, so that the earthquake resistance is remarkably improved.

  However, the column base hardware of Patent Document 1 is to place and fix a substrate on a cloth foundation, and the position of the substrate (horizontal position, vertical position) is the height of the top of the foundation. Can be built for the first time on the premise that is formed as prescribed and the position of the anchor bolt is set correctly. In other words, if the height of the base top and the position of the anchor bolt are not correct, the accuracy of column construction is impaired, the shaft assembly is distorted, and the seismic resistance is deteriorated.

  In this regard, in Patent Document 2 below, the portion through which the anchor bolt is passed in the column base metal is set larger than the diameter of the anchor bolt so that the displacement of the anchor bolt can be absorbed even if the position of the anchor bolt is slightly out of order. It is disclosed that a bottom plate body having a long hole is provided under a nut screwed to an anchor bolt for fixing a column base metal.

  This makes it easy to set the horizontal position of the column base hardware correctly, but the vertical position cannot be corrected, and is affected by the accuracy of the base top and base.

  Moreover, in the column base metal object of patent document 2, although it says "it connects the pillar erected on a foundation and an anchor bolt", it is formed in the foundation embedded part buried in the foundation, and the foundation buried part separately. The base part to be inserted into the pillar is connected with one locking pin in the base, and the pillar is fixed to the base to the last, and is fixed to the anchor bolt through the base. The pillar is not directly connected to the anchor bolt.

Moreover, when fixing the base burying portion to the anchor bolt, it is necessary to consider the upper surface of the base burying portion to be flush with the upper surface of the base, and it is not always tightened tightly. In addition, since a long hole is formed in the bottom plate body under the nut, there is a possibility that the base is displaced on the foundation due to the rolling of the earthquake.
Japanese Patent Laid-Open No. 11-200511 Japanese Patent No. 3488870

  Therefore, the main object of the present invention is to improve the earthquake resistance by directly connecting the column material to the anchor bolts of the foundation, and to increase the accuracy by performing leveling etc. even when the column material is built. Let it be an issue.

  The means for that is a column base attached to the lower end of the column member, and is formed on the outer periphery of the lower end of the insertion unit, a cylindrical insertion unit that is inserted and fixed from the lower end to the column member, It is a column base hardware having a bowl-shaped receiving portion that receives the lower end surface of the column member, and an annular plate portion that is formed on the inner periphery of the insertion portion and has a fool hole that receives insertion of an anchor bolt.

  That is, when a column member is built using a column base metal, a nut is screwed onto the anchor bolt, and a fool hole is loosened on the anchor bolt so that the annular plate portion of the column base metal is placed on the nut. Fit. In this state, the nut is rotated so that the upper surface of the receiving portion of the column base metal is adjusted to a predetermined height. Then, the horizontal position and orientation of the column base hardware are set as prescribed, another nut is screwed onto the anchor bolt, and the annular plate portion of the column base hardware is sandwiched up and down to position the anchor base bracket on the anchor bolt. Fix it.

  After this, the necessary work of placing the foundation packing or placing the foundation on the top of the foundation is performed as appropriate, and the column material is built using the insertion portion of the column base hardware.

  Since the lower end surface of the column member is received by the receiving portion, the column member can be installed at an accurate position as positioned when the column base hardware is fixed. At this time, the built column material is directly connected to the anchor bolts of the foundation.

Here, about the said component, it can comprise in the following aspects, for example.
One of the embodiments is one in which an alignment mark is formed on the receiving portion. For example, when the receiving portion is circular in plan view, the mark can be formed by notches provided at equal intervals around the periphery, or linear marks provided in a cross shape on the upper surface of the receiving portion.

  That is, when the center of the insertion portion is positioned at the center position of the pillar material to be built based on the mark, the pillar material can be built at a predetermined position.

  The other one of the aspects is provided with nuts that are screwed into the anchor bolts and disposed above and below the annular plate portion.

  That is, since the nut clamps the annular plate portion up and down, the nut is fixed, so that a firm fixed state can be obtained unlike the case where the nut is simply pressed from above. For this reason, a shaft assembly that can withstand the rolling of an earthquake can be configured.

  In another aspect, a long hole for position correction is formed on the lower side of the nut disposed on the upper side of the annular plate portion and fitted into the annular plate portion from above and through which an anchor bolt can be inserted. Provided with a washer. The washer is preferably composed of a large-diameter portion that is large enough to fit in the insertion portion and a small-diameter portion that is formed under the large-diameter portion and fits in the fool hole.

  That is, since the long hole of the washer continuously allows the position shift of the anchor bolt in the fool hole while rotating, the position adjustment is easy and the annular plate portion supports the anchor bolt in the width direction of the long hole. Realizes strong tightening against.

  Another means is to mount the column base on the axis of the anchor bolt protruding from the top of the foundation and adjust the horizontal position, vertical position, and orientation of the receiving part of the column base, and then build the column material. It is a column material erection method that receives the lower end surface of the column material at the receiving part.

  That is, since the column material is built after the position of the column base metal is accurately adjusted as predetermined, the column material can be built with high accuracy. For this reason, there is no distortion in the construction of the shaft assembly or the like, and a wooden building that can sufficiently exhibit the effect of high earthquake resistance due to the direct connection of the column material to the anchor bolts of the foundation is obtained.

  As described above, if the column base hardware of the present invention is used, the position of the column base hardware can be accurately positioned before the column material is built. An object can be configured with high accuracy.

  Moreover, since the positioning can be performed using the receiving portion, it is not necessary to provide any other means and can be easily performed.

  Further, since the column material is fixed to the column base metal fixed to the anchor bolt, the column material becomes a highly earthquake-resistant wooden building directly connected to the anchor bolt.

  According to the column material erection method of the present invention, accurate positioning can be performed at the time of erection of the column material, so that a highly accurate wooden building can be obtained. The accuracy becomes more complete by the work of leveling and positioning in at least two stages, in which the construction of the foundation is accurately performed and the lower end surface position of the pillar material is accurately obtained. And the positioning operation | work of the lower end of a pillar material can be easily performed by utilizing a receiving part.

An embodiment for carrying out the present invention will be described below with reference to the drawings.
FIG. 1 shows a column base portion of a column member 12 in a framework 11 of a wooden building. As shown in this figure, the column member 12 is a column base fitting 61 with respect to an anchor bolt 31 disposed in a foundation 21. It is directly connected by.

  The column member 12 that is directly connected is preferably a through column 12a (see FIG. 2). Further, the column member 12b may be an important column member 12b for supporting the load by connecting the end portion of the horizontal member 13 to the upper end portion of the through column 12a instead of the through column 12a.

  The column base 61 is for connecting the column member 12 so that the axis of the anchor bolt 31 and the axis of the column member 12 are aligned, and is composed of one member.

  That is, as shown in FIG. 3, a cylindrical insertion portion 62 that is inserted and fixed to the column member 12 from the lower end thereof, and is formed on the outer periphery of the lower end of the insertion portion 62. It has a bowl-shaped receiving portion 63 for receiving, and an annular plate portion 64 formed on the inner periphery of the insertion portion 62 and having a fool hole 64 a for receiving insertion of the anchor bolt 31.

  The insertion portion 62 has a through hole 62a into which a bolt or a drift pin is inserted after being fixed to the column member 52 from below, and an upper end 62b is opened.

  The receiving portion 63 and the annular plate portion 64 are integral and form a circular shape in plan view. In other words, a circular plate member having the above-described hole 64 a having a diameter smaller than the inner diameter of the insertion portion 62 is fixed to the lower end of the cylindrical insertion portion 62.

  Four mark notches 63a are formed at equal intervals on the outer peripheral edge of the receiving portion 63, and the two notches 63a facing each other are set in the same direction as the through hole 62a.

  The column base 61 is provided with a position adjusting nut 65, a fixing nut 66, and washers 67, 68 overlapping therewith. The position adjusting nut 65 is used to determine the position of the column base metal 61 in the vertical (vertical) direction on the anchor bolt 31 by screwing with the anchor bolt 31, and includes the washer 67 on the upper surface side thereof. ing. The washer 67 is a plate having a through-hole having a size through which the anchor bolt 31 passes, and the washer 67 receives the lower surface of the annular plate portion 64 of the column base metal 61 as shown in FIG.

  The fixing nut 66 is for tightening the annular plate portion 64 of the column base 61 supported by the position adjusting nut 65 and the washer 67. A washer 68 stacked under the fixing nut 66 is formed under the large diameter portion 68a and a large diameter portion 68a having a size that fits in the insertion portion 62 so as to be fitted to the annular plate portion 64 from above. Then, a long hole 68c for position correction is formed in a plate shape composed of a small-diameter portion 68b having a size that can be accommodated in the fool hole 64a. The thickness of the small diameter portion 68 b is set to be thinner than the thickness of the annular plate portion 64.

The column base 61 thus configured is used as follows.
That is, prior to the work of installing the column material 12 on the anchor bolt 31, the position adjusting nut 65 is screwed onto the anchor bolt 31 and the washer 67 is set, and then the column base metal 61 is placed on the column base metal 61. The position adjustment nut 65 is rotated and adjusted so that the upper surface of the receiving portion 63 is positioned at a predetermined height (see the one-dot chain line in FIG. 4). Subsequently, the fixing nut 66 is screwed into the anchor bolt 31 through the washer 68 from above. Then, as shown in FIG. 5, the position of the column base metal 61 in the horizontal direction is adjusted using the notch 63 a and tightened with the fixing nut 66. Since the washer 68 rotates on the annular plate portion 64, the anchor bolt 31 can be relatively moved in any direction as long as it is within the length of the long hole 68c.

  That is, the leveling of the lower end surface of the pillar material 12 and the horizontal position adjustment and the orientation adjustment are performed prior to the installation of the pillar material 12.

  When the column base 61 is fixed, the state as shown in FIG. 6 is obtained. Therefore, as shown in FIG. The lower end surface of the column member 12 is received. Subsequently, necessary work such as fixing the base 14 is performed.

  Instead of the basic packing 69, an anchor bolt or the like can be concealed by filling an appropriate filler after the base 54 is fixed.

  Thus, since the position of the lower end surface of the pillar material 12 can be accurately set when the pillar material 12 is built, a wooden building without distortion can be configured with high accuracy.

  Moreover, since the positioning can be performed using the receiving portion 63, it is not necessary to provide any other means and can be easily performed.

  In addition, since the column member 12 is fixed to the column base 61 fixed to the anchor bolt 31, the column member 12 becomes a highly earthquake-resistant wooden building directly connected to the anchor bolt 31.

  In the figure, reference numeral 32 denotes an anchor pack that holds the anchor bolt 31 and is embedded in the rising base 22 of the base 21 and is suitable for mounting the column base hardware 61 as described above.

  The structure and effect of the anchor pack 32 will be described with reference to FIGS. 7 to 10. The anchor pack 32 is grounded on the base concrete 23 of the foundation 21 as shown in FIG. It is buried in In the illustrated example, a solid foundation is shown, but another form of foundation may be used. In the figure, reference numeral 51 denotes an anchor bolt that is mounted as usual without using the anchor pack 32.

  FIG. 8 is an exploded perspective view showing the structure of the anchor pack 32, which has a frame body 33 and one anchor bolt 31.

  The frame body 33 is parallel to the lower plate 34 with respect to the lower plate 34 that contacts the upper surface of the base concrete 23, four columns 35 erected from the lower plate 34, and the upper ends of these columns 35. And an upper plate 36 whose upper surface is positioned at the same height as the top end 22a of the rising base 22 to be formed later.

  The lower plate 34 has a rectangular plate shape and has two window portions 37 penetrating in the thickness direction on the inner side excluding the central portion. At the four corners, a cylindrical screw part 39 having a screw part into which the bolt 38 can be screwed is provided so that the horizontal on the base concrete 23 can be brought out by screwing the bolt 38.

  Further, a notch 40 as a mark is provided in the middle of each side of the lower plate 34 so that the center position of the lower plate 34 can be easily grounded to a predetermined position on the base concrete 23.

  As shown in FIG. 8, a holding recess 41 that receives and holds the lower end of the anchor bolt 31 is formed at the center position on the upper surface of the lower plate 34. The holding recess 41 is formed in a cylindrical shape, and an internal thread 41 a is formed on the inner peripheral surface thereof to engage with the external thread 32 a formed at the lower end of the anchor bolt 31.

  Further, through holes 42 are provided at appropriate portions of the lower plate 34, and a fixing member 43 such as a nail for fixing to the base concrete 23 can be attached.

  Furthermore, the attachment part 44 for attaching the said support | pillar 35 is standingly arranged by the upper surface, and the lower end part of the support | pillar 35 can be fixed detachably. In the figure, 45 is a screw for fixing. Since the support column 35 can be attached / detached, that is, the anchor pack 32 can be disassembled, if it is assembled at the site, it is possible to suppress the cost for carrying in the site and to prevent breakage during the transportation. Moreover, simplification of a structural member can also be achieved.

  The support column 35 is made of an angle material, and is formed to have a predetermined length corresponding to the height of the formed rising base 22, and a female screw 46 for screwing the fixing screw 45 into both upper and lower ends. Is formed.

  The upper plate 36 is formed in substantially the same form as the lower plate 34. However, an insertion hole 47 for holding an anchor bolt is formed at a position facing the holding recess 41 without having the threaded portion 39, the through hole 42, and the holding recess 41.

  The frame body 33 may be formed integrally instead of being disassembled and assembled.

  The anchor bolt 31 has a first male screw 31a that contributes to retaining at a lower end portion thereof, and a second male screw 31b that contributes to retaining and fixing the column material upward from a portion corresponding to the insertion hole 47. Have Two nuts 48 and 49 are held on the second male screw 31b, and when the anchor bolt 31 is fixed to the frame body 33, the nuts 48 and 49 sandwich the periphery of the insertion hole 47 of the upper plate 36 vertically. So, it will be firmly integrated.

The anchor pack 32 having such a configuration is used as follows.
In other words, after the base concrete 23 is formed, the base concrete 23 is installed at a predetermined portion of the portions forming the rising foundation 22. The installation is grounded in accordance with the core ink formed on the base concrete 23, and the bolt 38 to the threaded portion 39 of the lower plate 34 so that the lower plate 34 and the upper plate 36 are horizontal at a predetermined height. After that, the fixing member 43 is driven into the base concrete 23 from the through hole 42 and is fixed. A hole-in anchor or the like may be fixed to the base concrete 23 and a bolt 38 may be screwed and fixed to the hole-in anchor.

  Subsequently, reinforcement is appropriately arranged, a formwork is assembled, concrete is placed, and the rising foundation 22 is formed. The top end 22a of the rising base 22 is precisely performed by pouring a leveler. At this time, the upper surface of the upper plate 36 of the anchor pack 32 indicates the level of the top end 22a, so that the leveler is poured into the upper surface of the upper plate 36. Just do it. That is, the leveling for forming the top end 22a can be automatically performed when the anchor pack 32 is installed, and it is not necessary to separately perform the leveling work, so that the construction is simple. For this reason, it is possible to simplify the foundation work and shorten the latter period.

  After forming the rising foundation 22 in this way, the nut 49 positioned above the upper plate 36 is removed from the nuts screwed to the anchor bolt 31, and the column base metal 61 is attached as described above. The shaft set 11 is formed.

  When the anchor pack 32 as described above is used, the anchor bolt 31 can be disposed at a predetermined position simply by disposing the anchor pack 32. Moreover, since the upper plate 36 is parallel to the lower plate 34 and the upper surface of the upper plate 36 rises and is positioned at the same height as the top end 22a of the foundation 22, the lower plate 34 is grounded and fixed so as to be horizontal. Then, the level of the top end 22a of the rising base 22 can be automatically set.

  Further, during the placement of concrete, the lower plate 34, the support column 35, and the upper plate 36 form a single frame and hold the anchor bolt 31. Therefore, the anchor pack 32 is not twisted and deformed. The anchor bolt 31 can be installed in the state at the time of arrangement. In addition, since the lower plate 34 is basically grounded on the base concrete 23, it is difficult to form a halfway gap where the concrete cannot be filled, and a solid rising foundation 22 can be formed.

  In addition, the anchor bolt 31 is held at two locations, the lower end portion and the upper portion, and is fixed by screws. Therefore, the anchor bolt 31 is not displaced in the horizontal direction, and strength against pulling is obtained. Further, the lower end of the anchor bolt 31 is received by the lower plate 34, and the load from above can be strongly supported.

  That is, the anchor pack 32 cooperates with the concrete in the rising foundation 22 to form the rising foundation 22 that is strong not only in compression but also in tension.

  As a result, the wooden building having the frame 11 constructed by fixing the column base metal 61 as described above to the foundation 11 as described above and erected the column material 12 is a structure (floor) on the foundation 21. The set or the shaft set) is not displaced from the foundation 21 and is firmly supported.

  In addition, since the pillar 12 is connected to the anchor bolt 31 on the same axis, the pillar 12 can be directly connected to the foundation 21, and the pillar can be removed from the base without providing a separate hole-down hardware. It will be a high-strength, high-endurance wooden structure that is resistant to earthquakes.

  In addition, since the column base 61 as described above is used to build the column material 12, the leveling and positioning can be easily performed even in the building method after performing high-precision leveling in the foundation work. Further, the height and position of the pillar 12 can be made more accurate. For this reason, it is possible to obtain a highly accurate wooden structure without distortion, which greatly contributes to improvement in strength and durability.

  The anchor pack 32 can be used in a simple operation of inserting and fixing the anchor bolt 31 to the frame body 33. The structure is simple and has a small number of parts, and is a compact and easy-to-handle anchor pack 32 that is most suitable for a foundation for wooden construction, which is smaller in width and height than a foundation for steel construction.

In the correspondence between the configuration of the present invention and the configuration of the one aspect described above,
The mark in the present invention corresponds to the notch 63a in the above configuration,
Similarly,
The nuts arranged above and below the annular plate portion correspond to the position adjusting nut 65 and the fixing nut 66,
The nut disposed on the upper side of the annular plate portion corresponds to the fixing nut 66,
The washer corresponds to the washer 68,
The present invention is not limited to the above configuration, and various other forms can be adopted.

  For example, the annular plate portion 64 may not be formed at the same height as the receiving portion 63 but may be formed above it.

Sectional drawing of a column base part. A perspective view of the foundation and framework of a wooden building. The exploded perspective view of a column base part. Sectional drawing which shows the effect | action state of a column base metal. The cross-sectional view of the column base hardware. Sectional drawing which shows the fixed state of a column base metal fitting. Sectional drawing of a foundation. The exploded perspective view of an anchor pack. The front view of an anchor pack. Sectional drawing which shows the installation state of an anchor pack.

Explanation of symbols

DESCRIPTION OF SYMBOLS 12 ... Column material 21 ... Foundation 22a ... Top end 31 ... Anchor bolt 61 ... Column base metal 62 ... Insertion part 63 ... Receiving part 63a ... Notch 64 ... Annular plate part 64a ... Fool hole 65 ... Position adjustment nut 66 ... For fixing Nut 68 ... Washer

Claims (5)

Column base hardware attached to the lower end of the column material,
A cylindrical insertion portion that is inserted and fixed to the column member from its lower end;
A hook-shaped receiving portion that is formed on the outer periphery of the lower end of the insertion portion and receives the lower end surface of the column member;
A column base metal member having an annular plate portion formed on the inner periphery of the insertion portion and formed with a hole for receiving insertion of an anchor bolt. The column base metal according to claim 1, wherein a mark for alignment is formed on the receiving portion. The column base hardware according to claim 1 or 2, further comprising nuts that are screwed into anchor bolts and disposed above and below the annular plate portion. 4. A washer having a long hole for position correction that is fitted to the annular plate portion from above and through which an anchor bolt can be inserted is provided below the nut disposed on the upper side of the annular plate portion. Column base hardware described in. On the axis of the anchor bolt protruding from the base top end, the column base hardware according to any one of claims 1 to 4 is attached,
A column material erection method in which a column material is built after adjusting the horizontal position, vertical position, and orientation of the column pedestal bracket receiving portion, and the lower end surface of the column material is received by the receiving portion.

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