JP2012017633A - Earthquake-resistant structure and reinforcement method for wooden column - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reinforce wooden columns without altering the frame style.SOLUTION: An internal column 14 is directly placed on a concrete foundation 12. A lower bar 18 is inserted into a lower through-hole 16 provided in the lower part of the internal column 14. Lower concrete pedestals 23, which are provided between the concrete foundation 12 and the lower bar 18, have internal-thread bolts 37 implanted in them. The lower bar 18 is fixed to the lower concrete pedestals 23 by screwing anchor bolts 26 from the top side of the lower bar 18 into the internal-thread bolts 37. An upper bar 22 is inserted through an upper through-hole 20 that is provided so as to cross the lower through-hole 16. Upper concrete pedestals 29, which are provided between the concrete foundation 12 and the upper bar 22, have the internal-thread bolts 37 implanted in them. The upper bar 22 is fixed to the upper concrete pedestals 29 by screwing the anchor bolts 30 from the top side of the upper bar 22 into the internal-thread bolts 37.

Description

  The present invention relates to a seismic structure for a wooden pillar and a seismic reinforcement method.

  At present, many of the old wooden buildings that exist in Japan are estimated not to have sufficient seismic strength, including those that are considered national treasures and important cultural properties. There is an urgent need to conduct diagnosis and seismic reinforcement.

  Especially for shrines and temples with high historical value, it may be difficult to modify the building for preservation of traditional styles or rituals, etc., and even if the necessity of seismic reinforcement is recognized, an appropriate method cannot be found There is. Specifically, in shrines and temples where the amount of walls is small and the roof is supported almost exclusively by wooden pillars, the frame structure itself is meaningful, and even for the purpose of seismic reinforcement, the walls are free There are many cases where it is not possible to add muscles or braces. For this reason, a method for reinforcing a wooden pillar without changing the frame form is required.

  Then, the method of repairing the base part of the wooden pillar weakened by corrosion etc. and reinforcing a wooden pillar is proposed (patent document 1).

  According to Patent Document 1, as shown in FIG. 15, a synthetic resin-based adhesive is impregnated or applied to the base of the wooden pillar 82 weakened by corrosion or the like (above the meteorite 80), and the inorganic fiber 84 is applied thereto. Then, a synthetic resin adhesive is applied, and the outer periphery on which the adhesive is applied is surrounded by a metal frame 86. Then, the bolt 88 is passed through the metal frame 86 and the wooden pillar 82 and fixed. Next, the wooden pillar 82 and the garnet 80 surrounded by the metal frame 86 are solidified with concrete laid together with the reinforcing bars 92 as the foundation portion 90. As a result, the wooden pillar 82 is repaired, and the foundation portion 90 and the wooden pillar 82 are fixed integrally to improve the earthquake resistance.

  However, recovery of the strength of the wooden column 82 can hardly be expected only by impregnating or applying the adhesive with an adhesive and surrounding and reinforcing the under-pillar portion of the wooden column 82 with the inorganic fiber 84 fiber. Moreover, since the foundation 90 and the wooden pillar 82 are integrated by driving concrete, the wooden pillar 82 cannot be replaced. Furthermore, since the foundation 90 and the wooden pillar 82 are integrated, there is no place for moisture to escape, moisture stays in the voids inside the concrete, and decay due to condensation occurs in the lower part of the wooden pillar 82.

Then, the reinforcement method which enabled the replacement | exchange of a wooden pillar is proposed (patent document 2).
According to Patent Document 2, as shown in FIG. 16, a convex portion 96 is formed on the upper portion of the foundation stone 94, and a concave portion 98 in which the convex portion enters the bottom surface of the wooden pillar 100 is formed. Engage. Thereby, the wooden pillar 100 is supported rotatably with respect to the cornerstone 94. An anchor bolt 106 protrudes downward from the center position of the wooden pillar 100 at the lower part of the wooden pillar 100.

  The anchor bolt 106 is inserted into the through hole 102 formed in the foundation stone 94, and the lower end portion is fixed to the foundation 104. The upper end portion of the anchor bolt 106 is screwed into a fixed hardware 108 embedded in the lower portion of the pillar.

  However, Patent Document 2 originally expects the expression of an inclination restoring force as a proof stress, and is less constrained to the rotation of the column base, and is a horizontal at an interlayer deformation angle of 1/120 radians, which is a problem with the current strength standard. It hardly contributes to the improvement of resistance.

JP 2002-285709 A JP 2002-256628 A

  In view of the above facts, an object of the present invention is to provide a seismic structure for a wooden column that reinforces a wooden column without changing the frame form.

  The seismic structure of a wooden column according to the invention described in claim 1 is a seismic structure of a wooden column placed directly on a foundation portion, and is a bottom through a lower through-hole provided in a lower portion of the wooden column. A side support, a lower support member that is provided between the base portion and the lower pass and supports the lower pass, and a lower side that fixes the lower support member and the lower pass to the base portion A fixing member; an upper through hole that intersects the lower through hole and passes through an upper through hole provided on the lower through hole; and provided between the base portion and the upper through hole. And an upper fixing member that fixes the upper supporting member and the upper through hole to the base portion.

According to the first aspect of the present invention, the lower through hole penetrates the lower through hole, is supported by the lower support member, and is fixed to the base portion by the lower fixing member. The upper through hole penetrates the upper through hole, is supported by the upper support member, and is fixed to the base portion by the upper fixing member. Then, the wooden pillar is reinforced in two directions by the lower penetrating and upper penetrating penetrating the cross.
Thereby, the inclination of the wooden pillar placed directly on the foundation and the displacement in the vertical direction can be suppressed.

  In other words, since reinforcement is made by restraining the lower part of the wooden pillar under the floor, it is desirable to add a new member such as a wall or bracing to the upper part of the floor that can be seen by the public for preservation of traditional styles and ceremonial purposes. This is especially effective for seismic reinforcement of buildings that are not shrines and temples.

  According to a second aspect of the present invention, in the earthquake-proof structure of the wooden pillar according to the first aspect, when the wooden pillar is an inner pillar, both sides of the lower penetration are supported by the lower support member, and the lower side The lower penetration and the lower support member are fixed to the base portion by a fixing member, both sides of the upper penetration are supported by the upper support member, and the upper penetration and the upper support member are fixed by the upper fixing member. It is fixed to the base part.

According to invention of Claim 2, the lower side penetration and the upper side penetration are fixed from both sides, and are restrained about the wooden pillar used as the inner pillar. Thereby, the wooden pillar made into the inner pillar can be restrained and reinforced under the floor, without making it conspicuous from the outside.
Also, even if the lower through hole or the upper through hole is damaged due to decay or the like, the lower through hole or the upper through hole can be easily replaced without affecting the building body. It is easy to disassemble, and the used members can be reused.

  According to a third aspect of the present invention, in the earthquake-proof structure of the wooden pillar according to the first aspect, when the wooden pillar is an outer pillar, both sides of the lower penetration are supported by the lower support member, and the lower side The lower penetration and the lower support member are fixed to the base portion by a fixing member, the inner pillar side of the upper penetration is supported by the upper support member, and the upper penetration and the upper support are supported by the upper fixing member. The member is fixed to the base part, or both sides of the upper through hole are supported by the upper support member, and the upper through member and the upper support member are fixed to the base part by the upper fixing member, and the lower side The inner pillar side of the through hole is supported by the lower support member, and the lower through member and the lower support member are fixed to the base portion by the lower fixing member.

According to invention of Claim 3, the wooden pillar made into the outer pillar is fixed from both sides by lower side penetration, and the inner pillar side is fixed by upper side penetration. Or it fixes from both sides by upper side penetration, and fixes an inner pillar side by lower side penetration. Thereby, an outer pillar can be fixed by lower side penetration and upper side penetration, without providing a supporting member and a fixing member in the outer side of an outer pillar.
As a result, the earthquake resistance of the outer column can be improved without conspicuous the support member and the fixing member from the outside.

  The invention of claim 4 is the earthquake resistant structure of the wooden pillar according to claim 1, wherein when the wooden pillar is a corner pillar, the outer pillar side of the lower penetration is supported by the lower support member, The lower penetration member and the lower support member are fixed to the base portion by the lower fixing member, the outer pillar side of the upper penetration is supported by the upper support member, and the upper penetration member is supported by the upper fixation member. And the upper support member is fixed to the base portion.

According to invention of Claim 4, the wooden pillar made into the corner pillar is being fixed from the outer pillar side by lower side penetration, and is simultaneously being fixed from the outer pillar side by upper side penetration.
Thereby, the seismic resistance of the corner post can be improved without conspicuous the support member and the fixing member from the outside.

  According to a fifth aspect of the present invention, in the earthquake-proof structure of the wooden pillar according to any one of the first to fourth aspects, a lower wedge is driven into a gap between the lower through hole and the lower through hole, and the upper through hole is inserted. An upper wedge is driven into a gap between the hole and the upper through hole.

According to the invention described in claim 5, the lower wedge is driven into the gap between the lower through hole and the lower through hole, and the upper wedge is driven into the gap between the upper through hole and the upper through hole.
As a result, the lower through hole can be firmly fixed to the lower through hole, and the upper through hole can be firmly fixed to the upper through hole.

  A sixth aspect of the present invention is the earthquake resistant structure for a wooden pillar according to any one of the first to fifth aspects, wherein the foundation and the lower support member are overlapped with each other, the lower support member and the lower side Anti-slip means for preventing lateral slippage is provided on the overlapping surface of the through hole, the overlapping surface of the base portion and the upper supporting member, and the overlapping surface of the upper supporting member and the upper through member. It is characterized by that.

According to the sixth aspect of the present invention, the anti-slip means for preventing lateral slip is provided on all overlapping surfaces, that is, the overlapping surfaces of the base portion and the lower support member, the lower support member and the lower side. It is provided on the overlapping surface of the through hole, the overlapping surface of the base portion and the upper support member, and the overlapping surface of the upper support member and the upper through hole.
As a result, it is possible to prevent lateral slippage on the overlapping surface at the time of an earthquake and to further improve the earthquake resistance.

  According to a seventh aspect of the present invention, in the seismic structure of the wooden pillar according to the seventh aspect, the slip prevention means is formed on a convex portion formed on one surface of the overlapping surface and on the other surface. It is a concave part into which the convex part is inserted, or a gibber that bites into both surfaces of the overlapping surface.

  According to the seventh aspect of the present invention, slippage is prevented by the convex portion formed on one surface of the overlapping surface and the concave portion where the convex portion formed on the other surface enters. Alternatively, slipping is prevented by a gibber that bites into both sides of the overlapping surface. As a result, the earthquake resistance can be further improved.

According to an eighth aspect of the present invention, in the earthquake-proof structure of the wooden pillar according to any one of the first to seventh aspects, a step portion having a convex central portion is provided on the bottom surface of the lower through hole, and the lower A concave portion into which the convex stepped portion is inserted is provided on the lower surface of the lower through hole inserted into the side through hole.
That is, a latch engraving is formed between the bottom surface of the lower through hole and the lower surface of the lower through hole. Thereby, joining of the bottom face of the lower through hole and the lower face of the lower through hole can be strengthened.

  The method for seismic reinforcement of a wooden column according to the invention described in claim 9 includes a step of forming a lower through hole in a lower portion of the wooden column, and passing the lower through hole through the lower through hole, and the wooden column is directly A lower support member is inserted between the placed base portion and the lower through hole, and the lower support member is supported by the lower support member; and the lower support member and the lower through hole are Fixing to the base portion with a fixing member, crossing the lower through hole, forming an upper through hole on the lower through hole, and passing the upper through hole through the upper through hole; An upper support member is inserted between the base portion and the upper through hole, and the upper support member is supported by the upper support member, and the upper support member and the upper through hole are fixed to the base portion by the upper fixing member. And a process.

  According to the ninth aspect of the present invention, the lower through hole is formed through the lower through hole formed in the lower part of the wooden pillar through the lower through hole step, the lower through support step, and the lower through fixing step. Is fixed to the base. Further, the upper through hole penetrating the upper through hole is fixed to the base through the upper through hole process, the upper through support process, and the upper through fixing process.

  Thereby, the wooden pillar is reinforced by the lower side penetration and the upper side penetration passed through the cross, and the inclination and the vertical displacement of the wooden pillar placed directly on the foundation can be suppressed.

  Since the present invention is configured as described above, the wooden pillar can be reinforced without changing the frame form.

It is a figure which shows the basic composition of the earthquake proof structure of the wooden pillar which concerns on the 1st Embodiment of this invention. It is a figure which shows the example of a joining member used with the earthquake proof structure of the wooden pillar which concerns on the 1st Embodiment of this invention. It is a figure which shows the other structural example of the seismic structure of the wooden pillar which concerns on the 1st Embodiment of this invention. It is a flowchart which shows the construction procedure of the seismic reinforcement method of the wooden pillar which concerns on the 2nd Embodiment of this invention. It is a figure which shows the construction content of the earthquake-proof reinforcement method of the wooden pillar which concerns on the 2nd Embodiment of this invention. It is a figure which shows the construction content of the earthquake-proof reinforcement method of the wooden pillar which concerns on the 2nd Embodiment of this invention. It is a figure which shows the construction content of the earthquake-proof reinforcement method of the wooden pillar which concerns on the 2nd Embodiment of this invention. It is a figure which shows the basic composition of the earthquake proof structure of the wooden pillar which concerns on the 3rd Embodiment of this invention. It is a figure which shows the other structural example of the earthquake proof structure of the wooden pillar which concerns on the 3rd Embodiment of this invention. It is a figure which shows the other structural example of the earthquake proof structure of the wooden pillar which concerns on the 3rd Embodiment of this invention. It is a figure which shows the basic composition of the earthquake proof structure of the wooden pillar which concerns on the 4th Embodiment of this invention. It is a figure which shows the basic composition of the earthquake proof structure of the wooden pillar which concerns on the 4th Embodiment of this invention. It is a figure which shows the basic composition of the earthquake proof structure of the wooden pillar which concerns on the 5th Embodiment of this invention. It is a figure which shows the basic composition of the earthquake proof structure of the wooden pillar which concerns on the 5th Embodiment of this invention. It is a figure which shows the basic composition of the earthquake-resistant structure of the wooden pillar of a prior art example. It is a figure which shows the basic composition of the earthquake-resistant structure of the wooden pillar of a prior art example.

(First embodiment)
FIG. 1 is a cross-sectional view of a seismic structure 10 for a wooden pillar according to a first embodiment. 1A is a cross-sectional view taken along the line AA in FIG. 1B, and FIG. 1B is a cross-sectional view taken along the line BB in FIG. 1A.

  As shown in FIG. 1, the earthquake resistance structure 10 of a wooden pillar according to the first embodiment includes a concrete foundation 12 partially embedded in the ground 32, and a building (not shown) is built on the concrete foundation 12. The wooden inner pillar 14 provided in the building is directly placed.

  The concrete foundation 12 is made of concrete and is formed into a plate shape. The lower through-hole 16 provided in the lower portion of the inner pillar 14 has a wooden lower through-hole 18, and both ends of the lower end of the inner pillar 14 have a predetermined length. Inserted in a protruding state.

  Between the concrete foundation 12 and the lower through hole 18, lower concrete mounts 23 that support the lower through hole 18 are provided on both sides of the inner pillar 14. The lower concrete pedestal 23 is formed integrally with the concrete foundation 12, and internally threaded bolts 37 are embedded in the vertical direction. As shown in FIG. 2A, the female screw bolt 37 is a bolt having a female screw cut therein. An anchor bolt 26 is screwed into the internal thread bolt 37 embedded in the lower concrete pedestal 23 so as to pass through the lower through hole 18 from above the lower through hole 18, and the lower through hole 18 is attached to the lower concrete pedestal 23. Bolted.

  The upper surface of the lower concrete pedestal 23 has a height that makes contact with the lower surface of the lower through hole 18, and supports the lower through hole 18 on the upper surface of the lower concrete frame 23. A gibber 39 is sandwiched between the upper surface of the lower concrete mount 23 and the lower surface of the lower through hole 18. As illustrated in FIG. 2B or FIG. 2C, the gibber 39 is a ring-shaped steel anti-skid tool, and surrounds the female screw bolt 37 so as to be sandwiched between the joint surfaces. And lateral movement between the lower through-hole 18 is suppressed.

  On the bottom surface of the lower through-hole 16, a convex step 45 is provided at the center. Moreover, the lower surface of the lower penetration 18 is provided with a concave portion 47 that engages with the convex stepped portion 45 (see FIG. 6 described later). Thereby, a latch carving is formed between the bottom surface of the lower through-hole 16 and the lower surface of the lower through-hole 18. A lower wedge 34 is driven from both sides between the upper surface of the lower through hole 16 and the upper surface of the lower through hole 18. As a result, the bonding between the lower through hole 16 and the lower through hole 18 can be strengthened.

  An upper through hole 20 is provided on the lower through hole 16 so as to intersect with the lower through hole 16. In the upper through-hole 20, a wooden upper through-hole 22 is inserted in a state in which both end portions protrude to the outside of the inner pillar 14 by a predetermined length.

  Between the concrete foundation 12 and the upper through hole 22, an upper concrete frame 29 that supports the upper through hole 22 is provided on both sides of the inner pillar 14. The upper concrete mount 29 is made of concrete integrally with the concrete foundation 12, and internally threaded bolts 37 are embedded in the vertical direction. An anchor bolt 30 passing through the upper through 22 from above the upper through 22 is screwed into the female screw bolt 37, and the upper through 22 is bolted to the upper concrete mount 29.

  The upper surface of the upper concrete pedestal 29 has a height that makes contact with the lower surface of the upper through hole 22, and supports the upper through hole 22 on the upper surface of the upper concrete frame 29. A gibber 39 is sandwiched between the upper surface of the upper concrete mount 29 and the lower surface of the upper through hole 22 to suppress lateral movement.

  In addition, an upper wedge 36 is driven from both sides between the upper surface of the upper through hole 20 and the upper surface of the upper through hole 22 to strongly join the inner pillar 14 and the upper through hole 22.

  A beam 38 is suspended above the upper through hole 22 of the inner pillar 14, and a floor material 41 is laid on the beam 38 to constitute a floor 40. That is, in the underfloor space 42, the lower through hole 18 and the upper through hole 22 intersect with each other at the lower portion of the inner pillar 14 to reinforce the inner pillar 14.

  As a result, the inner pillar 14 placed directly on the concrete foundation 12 is reinforced in two directions by the lower through-hole 18 and the upper through-hole 22 that are passed through the cross in plan view, and the inclination of the inner pillar 14 in the event of an earthquake. And the vertical displacement is suppressed.

  Further, in the underfloor space 42, the reinforcement is made by restraining the lower part of the inner pillar 14, so that the reinforcement can be made without conspicuous from the outside. For this reason, it is effective for seismic reinforcement of shrines and temples, etc. that do not want to add new members such as walls and braces to the upper floor that can be seen by people for preservation of traditional styles and ceremonies.

  Also, even if the wooden lower through hole 18 or the upper through hole 22 is damaged due to decay or the like, the lower through hole 18 or the upper through hole 22 can be easily replaced without affecting the building body. It is easy to disassemble, and the used members can be reused.

In the above description, the lower concrete mount 23 and the upper concrete mount 29 are formed integrally with the concrete foundation 12, but may be formed separately.
That is, as shown in FIG. 3, a lower support block 24 formed separately from the concrete foundation 12 is disposed between the concrete foundation 12 and the lower penetration 18, and the lower penetration 18 from both sides of the inner column 14. May be supported.

Specifically, first, the tip of an anchor bolt 73 for fixing the lower support block 24 to the concrete foundation 12 is embedded, and the female screw bolt 37 is positioned after the concrete foundation 12 is placed. Thereafter, the lower support block 24 is driven on the concrete foundation 12, and the anchor bolt 73 and the female screw bolt 37 protruding from the concrete foundation 12 are embedded in the lower support block 24. At this time, the lower half of the dowel 39 to be joined to the lower through hole 18 is embedded in the upper end portion of the female screw bolt 37.
As a result, the lower through hole 18 can be fixed by the anchor bolt 26 in a state where the lower through hole 18 is supported by the upper surface of the lower support block 24.

In the same manner, the upper support block 28 is separately placed on the concrete foundation 12 to support the upper penetration 22. Thereby, the upper support block 28 is fixed to the concrete foundation 12 with the anchor bolts 73. Further, in a state where the upper through hole 22 is supported by the upper support block 28, the anchor bolt 30 is screwed into the female screw bolt 37 embedded in the upper support block 28 through the upper through hole 22, so that the upper through hole 22 is It is fixed to the support block 28.
Thus, even if the concrete foundation 12 and the lower concrete mount 23 and the upper concrete mount 29 are formed separately, the lower concrete mount 23 and the upper concrete mount 29 are formed integrally with the concrete foundation 12 and Similar actions and effects can be obtained.

(Second Embodiment)
The second embodiment is a seismic reinforcement method for seismically reinforcing the inner column 14 described in the first embodiment. The seismic reinforcement method is performed according to the procedure shown in FIG.

First, the lower penetrating process 110 is performed. As shown in FIG. 5, in the lower through-penetration process 110, the flat concrete foundation 12, the two lower concrete mounts 23 projecting from the concrete foundation 12, and the two upper concrete mounts 29 are integrated. Form.
A concrete or wooden convex portion 44 is provided at the center position of the inner column 14 supported by the concrete foundation 12.

  The lower concrete pedestal 23 is formed in the X-axis direction on both sides of the convex portion 44 with the convex portion 44 interposed therebetween, and female screw bolts 37 are embedded in the lower concrete pedestal 23, respectively. In addition, on the upper surface of the lower concrete mount 23 and around the female screw bolt 37, only a lower half is embedded in a gibber 39.

Similarly, the upper concrete pedestal 29 is formed in the Y-axis direction on both sides of the convex portion 44 with the convex portion 44 interposed therebetween, and female screw bolts 37 are respectively embedded in the upper concrete pedestal 29. Further, only the lower half is embedded in the upper half of the upper concrete mount 29 and around the female screw bolt 37.
When the above foundation is prepared, as shown in FIG. 6, the inner pillar 14 is constructed by aligning the convex portion 44 with the concave portion provided at the center of the bottom surface of the inner pillar 14. Thereby, the slip between the inner pillar 14 and the concrete foundation 12 by a horizontal force is prevented.

In the lower part of the inner column 14, before the inner column 14 is built, a lower through hole 16 is provided in the X axis direction and an upper through hole 20 described later in the Y axis direction is provided in another place. The wooden lower through-hole 18 is inserted into the lower through-hole 16 from the direction of the arrow P. A through hole 59 that allows the anchor bolt 26 to pass through is provided in the lower through hole 18 at the position of the female screw bolt 37, and a dowel 39 is abutted around the through hole 59 on the bottom surface of the lower through hole 18. Grooves are provided. Further, a concave portion 47 that engages with the convex portion 45 of the inner pillar 14 is provided on the bottom surface of the central portion of the lower through hole 18.
The width d1 of the lower through hole 18 is smaller than the width d2 of the lower concrete mount 23. Both end portions of the lower through-hole 18 are extended to the outside from the side surface of the inner pillar 14 with substantially the same length, and are supported on the upper surface of the lower concrete mount 23.
The lower through hole 16 and the upper through hole 20 may be provided after the inner pillar 14 is built.

  Next, the lower penetration support process 112 is performed. The lower through-hole support step 112 matches the convex stepped portion 45 formed on the lower surface of the lower through-hole 16 with the concave portion 47 of the lower through-hole 18, and then drops the lower through-hole 18 downward, The convex stepped portion 45 and the concave portion 47 of the lower through hole 18 are engaged. At this time, the lower surface of the lower through hole 18 is placed on the upper surface of the lower concrete mount 23.

Next, the lower penetration fixing step 114 is executed. In the lower through fixing step 114, the anchor bolt 26 is screwed into the female screw bolt 37 through the through hole 59 from above the upper through 18. Then, the lower plate 18 and the lower concrete mount 23 are fixed by the anchor bolt 26 with a washer 77 and a nut 78 by using the holding plate 76 from above the upper plate 18.
Thereafter, the lower wedge 34 is driven from both sides of the wooden pillar 14 between the lower through hole 16 and the lower through hole 18. Thereby, the inner pillar 14 and the lower penetration 18 can be firmly fixed.

  Next, the upper penetration process 116 is performed. As shown in FIG. 7, in the upper penetrating step 116, the wooden upper penetrating hole 22 is inserted into the upper penetrating hole 20 formed in the direction intersecting the lower penetrating hole 16 above the lower penetrating hole 16. . The upper through hole 22 is provided with a through hole 59 through which the anchor bolt 26 penetrates at the position of the female screw bolt 37.

  The width d3 of the upper through hole 22 is smaller than the width d3 of the upper concrete mount 29. Both end portions of the upper through hole 22 extend outward from the side surface of the inner pillar 14 by substantially the same length, and are supported on the upper surface of the upper concrete mount 29.

  Next, the upper penetrating support step 118 is executed. In the upper through support step 118, the upper through hole 22 is inserted into the upper through hole 20, the positions of the through hole 59 and the female screw bolt 37 are aligned, and the lower surface of the lower through hole 18 is placed on the upper surface of the upper concrete mount 29.

  Finally, the upper penetration fixing step 120 is executed. In the upper penetration fixing step 120, the anchor bolt 26 is inserted into the through hole 59 from above the upper penetration 22 and screwed into the female screw bolt 37. Thereafter, the holding plate 75 is placed, and the upper through 22 is fixed to the upper concrete mount 29 with the washer 77 and the nut 78.

  Thereafter, the upper wedge 36 is driven from both sides of the inner pillar 14 between the upper through hole 20 and the upper through hole 22. Thereby, the inner pillar 14 placed directly on the concrete foundation 12 can be reinforced in the Y-axis direction.

  In addition, although the earthquake resistance structure 10 of the wooden pillar which concerns on 1st Embodiment was demonstrated, the earthquake resistance structure 126 of the wooden pillar which concerns on 3rd Embodiment mentioned later, and the earthquake resistance of the wooden pillar which concerns on 4th Embodiment The structure 50 and the seismic structure 60 of the wooden pillar according to the fifth embodiment can basically be seismically reinforced in the same procedure.

(Third embodiment)
As shown in FIG. 8, the wooden column earthquake-resistant structure 126 according to the third embodiment supports the lower penetration 18 with a lower steel frame 128. The lower steel pedestal 128 has a configuration in which steel plates are joined to both ends of an H-shaped steel cut to a predetermined length, a lower flange is joined to the concrete foundation 12 with anchor bolts 134, and an upper flange is on the lower side. The through hole 18 and the anchor bolt 136 are joined.
Further, on the upper flange of the lower steel pedestal 128, an anti-slip material 141 is attached to an end portion on the side far from the inner pillar 14. The anti-slip material 141 is in contact with notches provided at the lower portions of both ends of the lower through hole 18 to prevent the lower through hole 18 from coming out of the lower through hole 16.

Similarly, the upper through 22 is supported by an upper steel pedestal 132. The upper steel pedestal 132 has a configuration in which steel plates are joined to both ends of an H-shaped steel cut to a predetermined length, a lower flange is joined to the concrete foundation 12 with anchor bolts 134, and an upper flange is joined to the upper through 22. And the anchor bolt 136.
Further, on the upper flange of the upper steel pedestal 132, a non-slip material 141 is attached to an end portion on the side far from the inner pillar 14. The anti-slip material 141 is in contact with notches provided at the lower portions of both ends of the upper through hole 22 to prevent the upper and lower through holes 22 from coming out of the upper through hole 20.

Further, the intersection of the lower through-hole 18 and the upper through-hole 22 has a phase-out configuration in which the upper notch of the lower through-hole 18 and the upper notch of the upper through-hole 22 mesh with each other (not shown). . Further, a wedge 36 is driven on the upper through hole 22 from both sides of the inner pillar 14, and a wooden plug 138 is inserted in a direction intersecting the wedge 36 to restrain the horizontal slip relative to the pillar of the upper through hole 22. ing. Other configurations are the same as those of the wooden column earthquake-resistant structure 10 according to the first embodiment, and a description thereof will be omitted.
Thereby, in addition to the effect | action and effect which were demonstrated with the seismic structure 10 of the wooden pillar which concerns on 1st Embodiment, seismic strength can be raised more.

In addition, there are the following methods as means for further increasing the seismic strength.
As shown in FIG. 9, the wedge 36 driven on the upper through hole 22 may be a wedge 36 with a wire rope that is connected to each other by a wire rope 144 so as not to come off. Thereby, joining of the inner pillar 14 and the upper penetration 22 can be strengthened.

  Furthermore, as shown in FIG. 10 (A), the convex portion (dough) 44 on the concrete foundation 12 side is made of metal to increase the strength, and as shown in FIG. 10 (B), a metal plate 146 is formed on the bottom of the inner pillar 14. May be attached with a lag screw 148, and a recess 46 that engages with the dowel 44 may be provided at the center of the metal plate 146. Thereby, joining of concrete foundation 12 and inner pillar 14 can be strengthened more.

(Fourth embodiment)
As shown in FIGS. 11 and 12, in the seismic structure 50 of a wooden pillar according to the fourth embodiment, a part of the concrete foundation 12 is embedded in the ground 32. On the concrete foundation 12, the wooden outer pillar 48 provided in the outer peripheral part of the building is put directly.

  A beam 38 is laid on the indoor side (inner column 14 side) of the outer column 48, and a floor material 41 is laid on the beam 38 to constitute a floor 40. On the other hand, an edge bundle 53 is built on the outdoor side of the outer pillar 48, an edge plate 51 is passed between the outer pillar 48 and the edge bundle 53, and an edge 52 is provided. The under floor space 42 and the under edge space 54 are provided with a lower through hole 18 and an upper through hole 22 that support the outer column 48 at the lower part.

  A lower through hole 16 is provided in the lower portion of the outer column 48 in the X-axis direction, and a lower through hole 18 is inserted into the lower through hole 16. Both end portions of the lower through-hole 18 are extended from the outer column 48, and the extension amount is short on the edge 52 side and long on the floor 40 side. Two through holes are provided on the elongated side of the lower through hole 18.

  Between the concrete foundation 12 on the floor 40 side and the lower through-hole 18, a lower concrete mount 140 is provided integrally with the concrete foundation 12, and the lower through-hole 18 is supported by the lower concrete mount 140.

Two female screw bolts 37 are embedded in the lower concrete mount 140 so that the female screw bolts 37 and the through holes are aligned. The anchor bolt 26 is inserted from above the lower through hole 18 and screwed into the female screw bolt 37. Thereby, the lower through hole 18 can be fixed to the lower concrete mount 140 with the anchor bolt 26. On the other hand, the lower concrete mount 140 is not provided on the edge 52 side.
As a result, the lower through-hole 18 can be fixed on the floor 40 side without providing a support member or a fixing member on the outdoor side of the outer column 48.

  Similarly, the upper penetration 22 is supported on both sides by the upper concrete pedestal 142, and is fixed from both sides of the outer column 48 with the anchor bolts 30 using the female screw bolts 37 embedded in the upper concrete pedestal 142.

  As shown in FIG. 12B, when there is an edge 52 on the side crossing the Y axis of the outer column 48, the upper concrete pedestal 142 is disposed on the floor 40 side, and the female screw bolts 37 are installed at both locations. Embedded in the floor 40. And what is necessary is just to fix the upper penetration 22 to the upper concrete mount 142 using the anchor bolt 30 in two places on the floor 40 side.

The lower through-hole 18 is supported by the lower concrete gantry 140 from both sides of the outer column 48, and the anchor bolt 26 is screwed into the female screw bolt 37 embedded in the lower concrete gantry 140 to be fixed to the lower concrete gantry 140. To do.
Others are the same as those in the first embodiment, and a description thereof will be omitted.

Accordingly, the outer column 48 can be fixed to the lower through-hole 18 and the upper through-hole without making the support member and the fixing member conspicuous from the outside, and the earthquake resistance of the outer column 48 can be improved.
In the above description, the lower concrete mount 23 and the upper concrete mount 29 are formed integrally with the concrete foundation 12, but may be formed separately.

  That is, although illustration is omitted, the concrete platform corresponding to the lower concrete platform 140 and the upper concrete platform 142 shown in FIG. 11 may be configured separately. That is, as described in FIG. 3 in the first embodiment, each concrete mount is fixed to the concrete foundation 12 with the anchor bolt 73, and the lower side is utilized by using the female screw bolt 37 embedded in each concrete mount. What is necessary is just to fix with the penetration 18 and the upper side penetration 22, and the anchor bolts 26 and 30.

(Fifth embodiment)
As shown in FIGS. 13 and 14, in the seismic structure 60 of a wooden pillar according to the fifth embodiment, a part of the concrete foundation 12 is embedded in the ground 32. On the concrete foundation 12, a wooden corner pillar 62 provided in the corner of the outer peripheral portion of the building is placed directly.

  A beam 38 is laid on the indoor side (outer column 48 side) of the corner column 62, and a floor material 41 is laid on the beam 38 to constitute a floor 40. On the other hand, an edge bundle 53 is built on the outdoor side of the corner pillar 62, an edge plate 51 is passed between the corner pillar 62 and the edge bundle 53, and an edge 52 is provided. In the under floor space 42 and the under edge space 54, a lower through hole 18 and an upper through hole 22 are provided below the corner pillar 62.

  A lower through hole 16 is provided in the lower portion of the corner column 62 in the X-axis direction, and a lower through hole 18 is inserted into the lower through hole 16. Both end portions of the lower through hole 18 protrude from the outer column 48. The protruding amount is short on the edge 52 side and long on the outer column 48 side. Two through holes are provided on the elongated side of the lower through hole 18.

A lower support block 25 is provided separately from the concrete foundation 12 on the outer pillar 48 side of the lower through hole 18, and supports the lower through hole 18 on the upper surface of the lower support block 25. At this time, the concrete foundation 12 and the lower support block 25 are fixed with anchor bolts 73.
The lower support block 25 is embedded with the lower half of the female screw bolt 37 and the dowel 39, and the lower through hole 18 is fixed to the lower support block 25 by screwing the anchor bolt 26 into the female screw bolt 37. it can.

Further, both end portions of the upper through hole 22 also protrude from the corner pillar 62. The protruding amount is short on the edge 52 side and long on the outer column 48 side. Two through holes are provided on the elongated side of the upper through hole 22.
An upper support block 28 is provided separately from the concrete foundation 12 on the outer pillar 48 side of the upper support 22, and the upper support 22 is supported by the upper surface of the upper support block 28. At this time, the concrete foundation 12 and the upper support block 28 are fixed with anchor bolts 73.
In addition, the lower half of the female screw bolt 37 and the dowel 39 is embedded in the upper support block 28, and the upper through 22 can be fixed to the upper support block 28 by screwing the anchor bolt 30 into the female screw bolt 37.

  Thereby, the corner pillar 62 can be fixed by the lower penetration 18 and the upper penetration 22 without making the support member and the fixing member conspicuous from the outside, and the earthquake resistance of the corner pillar 62 can be improved.

  In addition, although the above description was demonstrated using the lower side support block 25 and the upper side support block 28 which were comprised integrally with the concrete foundation 12, as demonstrated in other embodiment, the lower side concrete mount frame 23 is demonstrated. The upper concrete mount 29 may be configured separately from the concrete foundation 12.

10 Seismic structure of wooden pillars 12 Concrete foundation (foundation)
14 Inner pillar (wooden pillar)
16 Lower through hole 18 Lower through hole 20 Upper through hole 22 Upper through hole 23 Lower concrete mount (lower support member)
24 Lower support block (lower support member)
26 Lower anchor (lower fixing member)
28 Upper support block (upper support member)
29 Lower concrete mount (upper support member)
30 Upper anchor (upper fixing member)
34 Lower wedge 36 Upper wedge 45 Convex step 47 Depression 48 Outer pillar (wooden pillar)
62 Corner pillar (wooden pillar)

Claims (9)

In the seismic structure of wooden pillars placed directly on the foundation,
A lower penetrating through a lower through hole provided in a lower portion of the wooden pillar;
A lower support member provided between the base portion and the lower through hole and supporting the lower through hole;
A lower fixing member for fixing the lower support member and the lower through hole to the base portion;
An upper through hole penetrating an upper through hole provided on the lower through hole crossing the lower through hole;
An upper support member provided between the base portion and the upper through hole and supporting the upper through hole;
An upper fixing member that fixes the upper support member and the upper through hole to the base portion;
Seismic structure of wooden pillar with When the wooden pillar is an inner pillar, both sides of the lower penetration are supported by the lower support member, and the lower penetration member and the lower support member are fixed to the base portion by the lower fixing member. ,
The seismic structure for a wooden column according to claim 1, wherein both sides of the upper through hole are supported by the upper support member, and the upper through member and the upper support member are fixed to the base portion by the upper fixing member. When the wooden pillar is an outer pillar, both sides of the lower through hole are supported by the lower support member, and the lower through member and the lower support member are fixed to the base portion by the lower fixing member. , Supporting the inner pillar side of the upper through hole with the upper support member, fixing the upper through hole and the upper support member to the base portion with the upper fixing member,
Alternatively, both sides of the upper through hole are supported by the upper support member, the upper fixing member and the upper through hole and the upper support member are fixed to the base portion, and the inner pillar side of the lower through hole is the lower side The wooden column earthquake-proof structure according to claim 1, wherein the wooden pillar is supported by a support member, and the lower penetration member and the lower support member are fixed to the foundation by the lower fixing member.   When the wooden pillar is a corner pillar, the outer pillar side of the lower penetration is supported by the lower support member, and the lower penetration member and the lower support member are supported by the lower fixing member. The wooden pillar according to claim 1, wherein the outer pillar side of the upper through hole is supported by the upper support member, and the upper through member and the upper support member are fixed to the base portion by the upper fixing member. Earthquake-resistant structure.   The lower wedge is driven into the gap between the lower through hole and the lower through hole, and the upper wedge is driven into the gap between the upper through hole and the upper through hole. Seismic structure of wooden columns.   The overlapping surface of the base portion and the lower support member, the overlapping surface of the lower support member and the lower penetration, the overlapping surface of the base portion and the upper support member, and the upper support member and the upper surface The earthquake-resistant structure of the wooden pillar of any one of Claims 1-5 in which the anti-slip | skid means which prevents a slip in a horizontal direction is provided in the overlapping surface of a penetration.   The slip prevention means is a convex portion formed on one surface of the overlapping surface and a concave portion into which the convex portion formed on the other surface enters, or a dowel that bites into both surfaces of the overlapping surface. The earthquake-resistant structure of the wooden pillar of Claim 6.   A step portion having a convex central portion is provided on the bottom surface of the lower through hole, and a concave portion is provided on the lower surface of the lower through hole inserted into the lower through hole. The earthquake-resistant structure of the wooden pillar of any one of Claims 1-7. Forming a lower through hole in the lower part of the wooden pillar, and passing the lower through hole through the lower through hole;
Inserting a lower support member between the base portion on which the wooden pillar is placed directly and the lower through hole, and supporting the lower through hole with the lower support member;
Fixing the lower support member and the lower through hole to the base portion with a lower fixing member;
Crossing the lower through hole, forming an upper through hole on the lower through hole, and passing the upper through hole through the upper through hole;
Inserting an upper support member between the base portion and the upper through hole, and supporting the upper through hole with the upper support member;
Fixing the upper support member and the upper through hole to the base portion with an upper fixing member;
Seismic reinforcement method for wooden pillars with

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