JP6895267B2 - Pillar support structure - Google Patents

Description

The present invention relates to a column support structure.

A joining structure of a wood member that joins a pair of wood members via a steel material is known (see, for example, Patent Documents 1 and 2).

Japanese Unexamined Patent Publication No. 10-18436 Japanese Unexamined Patent Publication No. 2006-348464

By the way, the upper column may be joined to the lower column via a wooden horizontal member such as a wooden beam or a wooden floor.

However, in this case, a vertical load (axial force) is transmitted from the upper pillar to the wooden horizontal member, and the wooden horizontal member may be damaged.

In consideration of the above facts, an object of the present invention is to reduce the vertical load transmitted from the upper pillar to the wooden horizontal member.

The pillar support structure according to the first aspect includes a wooden horizontal member, an upper pillar arranged above the wooden horizontal member, a lower pillar arranged below the wooden horizontal member, and the lower pillar. A support member provided on the pillar head, penetrating the wooden horizontal member in the vertical direction, and supporting the upper pillar on the upper side of the wooden horizontal member is provided.

According to the pillar support structure according to the first aspect , the upper pillar is arranged on the upper side of the wooden horizontal member. In addition, a lower pillar is arranged below the wooden horizontal member. A support member is provided on the stigma of the lower column. The support member penetrates the wooden horizontal member in the vertical direction and supports the upper pillar on the upper side of the wooden horizontal member.

As a result, the vertical load of the upper column is transmitted to the capital of the lower column via the support member. Therefore, the vertical load transmitted from the upper pillar to the wooden horizontal member is reduced.

The pillar support structure according to the second aspect is the pillar support structure according to the first aspect , wherein the support member includes a first tubular body provided on either one of the lower pillar and the upper pillar, and the lower side. It is provided on either one of the pillar and the upper pillar, and is inserted into the inside of the first tubular body or the first tubular body is inserted inside, and the upper pillar is supported on the upper side of the wooden horizontal member. A gap filling material that fills the gap between the second tubular body and the first tubular body and the second tubular body.
Have.

According to the column support structure according to the second aspect , the support member has a first tubular body, a second tubular body, and a gap filling material. The first tubular body is provided on either the lower column or the upper column.

On the other hand, the second tubular body is provided on either the lower column or the upper column. Further, the second tubular body is inserted inside the first tubular body, or the first tubular body is inserted inside. This second tubular body supports the upper pillar on the upper side of the wooden horizontal member.

As a result, the vertical load of the upper column is transmitted to the capital of the lower column via the second tubular body. Therefore, the vertical load transmitted from the upper pillar to the wooden horizontal member is reduced.

Further, the gap between the first tubular body and the second tubular body is filled with the gap filling material. As a result, the misalignment between the first tubular body and the second tubular body is suppressed.

The pillar support structure according to the third aspect is the pillar support structure according to the first aspect , wherein the support member penetrates the wooden horizontal member in the vertical direction, and the lower end portion is inserted into the pillar head of the lower pillar. At the same time, the upper end portion is inserted into the column base portion of the upper pillar, and has a plate-shaped member that supports the upper pillar on the upper side of the wooden horizontal member.

According to the pillar support structure according to the third aspect , the support member has a plate-shaped member. The plate-shaped member penetrates the wooden horizontal member in the vertical direction. The lower end of this plate-shaped member is inserted into the capital of the lower column. On the other hand, the upper end portion of the plate-shaped member is inserted into the column base portion of the upper column. This plate-shaped member supports the upper pillar on the upper side of the wooden horizontal member.

As a result, the vertical load of the upper column is transmitted to the capital of the lower column via the plate-shaped member. Therefore, the vertical load transmitted from the upper pillar to the wooden horizontal member is reduced.

As described above, according to the pillar support structure according to the present invention, it is possible to reduce the vertical load transmitted from the upper pillar to the wooden horizontal member.

It is a top view which shows the structure to which the column support structure which concerns on 1st Embodiment is applied. It is a vertical cross-sectional view which shows the wooden pillar shown in FIG. It is an exploded view which disassembled the upper tubular body and the lower tubular body shown in FIG. FIG. 2 is a cross-sectional view taken along the line F4-F4 of FIG. FIG. 2 is a cross-sectional view taken along the line F5-F5 of FIG. It is an exploded view which disassembled the wooden deck shown in FIG. FIG. 5 is a cross-sectional view taken along the line F7-F7 of FIG. It is sectional drawing corresponding to F8-F8 line of FIG. It is a top view which shows the joint part of the concrete beam and a wooden deck shown in FIG. It is a vertical cross-sectional view corresponding to FIG. 2 which shows the modification of the column support structure which concerns on 1st Embodiment. It is an elevation view which shows the wooden beam, the upper wooden column, and the lower wooden column to which the column support structure which concerns on 2nd Embodiment is applied. 11 is a cross-sectional view taken along the line F12-F12 of FIG. It is an exploded view which disassembled the wooden beam, the upper wooden column, and the lower wooden column shown in FIG. It is a vertical cross-sectional view corresponding to FIG. 12 which shows the modification of the column support structure which concerns on 2nd Embodiment. FIG. 14 is a cross-sectional view taken along the line F15-F15 of FIG.

(First Embodiment)
First, the first embodiment will be described.

(Structure)
FIG. 1 shows a structure 12 having a wooden pillar 30 to which the pillar support structure 10 according to the present embodiment is applied. The structure 12 is a mixed structure of a reinforced concrete structure or the like and a wooden structure. Specifically, the structure 12 includes a plurality of concrete beams 14, a plurality of concrete columns 16, and a plurality of wooden columns 30.

The plurality of concrete beams 14 are made of reinforced concrete (hereinafter referred to as "RC") or steel-framed reinforced concrete (hereinafter referred to as "SRC"), and are arranged in a well shape in a plan view. Each concrete beam 14 is erected between a plurality of concrete columns 16.

The concrete column 16 is made of RC structure or SRC structure. For example, a wooden earthquake-resistant wall 18 is appropriately provided on the structure surface of the frame composed of the concrete columns 16 and the concrete beams 14.

The plurality of wooden pillars 30 are made of wood and are arranged on the outer peripheral portion of the structure 12. These wooden pillars 30 support the wooden floor 20. The wooden floor 20 has a plurality of wooden floor slabs 22. The wooden deck 22 is formed in a plate shape by CLT or the like. The wooden floor 20 is an example of a wooden horizontal member.

As shown in FIGS. 2 and 3, the wooden pillar 30 has an upper wooden pillar 30U arranged above the wooden floor 20 and a lower wooden pillar 30L arranged below the wooden floor 20. ing. A fireproof structure is applied to the upper wooden pillar 30U and the lower wooden pillar 30L.

The upper wooden pillar 30U and the lower wooden pillar 30L have the same configuration. Therefore, in the following, the configuration of the upper wooden pillar 30U will be described, and the description of the configuration of the lower wooden pillar 30L will be omitted as appropriate.

The upper wooden pillar 30U has a wooden core portion 30A that supports a load and a fireproof coating layer 30B that fireproofly coats the wooden core portion 30A. The wood core portion 30A is provided along the material axis direction of the upper wood pillar 30U. The wood core portion 30A is formed of, for example, a laminated wood in which a plurality of prismatic or plate-shaped woods are integrated with an adhesive or the like. Further, the wooden core portion 30A is formed so as to be able to support the load (long-term load and short-term load) borne by the upper wooden pillar 30U.

The fireproof coating layer 30B has a burn-off layer 32 provided on the outside of the wood core portion 30A and a burn-off layer 34 provided on the outside of the burn-off layer 32. The non-burning layer 32 is formed in a tubular shape surrounding the wood core portion 30A, and covers the wood core portion 30A over the entire circumference.

The burn stop layer 32 is a layer that stops the combustion of the burn allowance layer 34 at the time of a fire (natural fire extinguishing) and suppresses the combustion of the wood core portion 30A. Specifically, the non-burning layer 32 has, for example, a hardened mortar (mortar plate) 36 and a wood plate (not shown), and has a higher heat capacity than the wood core 30A and the burn margin layer 34 described later (a high heat capacity layer (). Heat capacity type). A wood-based burning allowance layer 34 is provided on the outside of the burning stop layer 32.

The burn-off layer 34 is formed in a tubular shape surrounding the burn-stop layer 32, and covers the side surface of the burn-stop layer 32 over substantially the entire circumference. The burning allowance layer 34 is a layer that suppresses the infiltration of fire heat into the wood core portion 30A by forming a carbonized layer (insulation layer) by burning in the event of a fire.

The burning allowance layer 34 is formed of, for example, laminated wood. The burn margin layer 34 is joined to the side surface of the burn stop layer 32 with an adhesive or the like. The thickness (layer thickness) of the burn margin layer 34 is appropriately set according to the required fire resistance performance (fire resistance time) required for the upper wooden pillar 30U, the combustion speed of the wood forming the burn margin layer 34, and the heat shield performance. ing.

(Column support structure)
The pillar support structure 10 according to the present embodiment is applied to the upper wooden pillar 30U and the lower wooden pillar 30L. Specifically, the upper wooden pillar 30U is supported by the lower wooden pillar 30L via the support member 40, and the vertical load (axial force) of the upper wooden pillar 30U is not transmitted to the wooden floor 20. There is.

The support member (support structure) 40 has an upper tubular body 42, a lower tubular body 52, and a gap filling material 56. The upper tubular body 42 is formed in a tubular shape (cylindrical shape). The upper tubular body 42 is fixed to the wood core portion 30A of the upper wood pillar 30U. Specifically, the upper base plate 44 is joined to the upper end portion of the upper tubular body 42.

A plurality of anchor members 46 are joined to the upper base plate 44. The anchor member 46 is, for example, a glue-in rod (GIR) and resists a pulling force. The anchor member 46 extends upward from the upper base plate 44 and is inserted into a mounting hole 48 formed in the wood core portion 30A of the upper wood pillar 30U. Further, the mounting hole 48 is filled with a filler 49 such as an adhesive. The anchor member 46 is fixed to the wood core portion 30A of the upper wood pillar 30U by the filler 49.

A cross plate 50 is joined to the upper base plate 44. The cross-shaped plate 50 is formed in a cross shape in a plan view, and is inserted into a cross-shaped slit formed in the wood core portion 30A of the upper wood pillar 30U. Further, the cross-shaped plate 50 is fixed to the wood core portion 30A of the upper wood pillar 30U by a drift pin or the like (not shown). The cross-shaped plate 50 transmits a shearing force between the wood core portion 30A of the upper wood pillar 30U and the upper tubular body 42.

The lower tubular body 52 is formed in a tubular shape (cylindrical shape). The lower tubular body 52 has a larger diameter than the upper tubular body 42, and the upper tubular body 42 can be inserted into the lower tubular body 52. The lower tubular body 52 is fixed to the wood core portion 30A of the lower wood pillar 30L.

Specifically, the lower base plate 54 is joined to the lower end of the lower tubular body 52. Similar to the upper base plate 44, a plurality of anchor members 46 are joined to the lower base plate 54. Further, a cross-shaped plate 50 is joined to the lower base plate 54 in the same manner as the upper base plate 44.

The joint structure between the upper tubular body 42 and the upper wooden column 30U is not limited to the anchor member 46 and the cross-shaped plate 50, and can be changed as appropriate. Similarly, the joint structure between the lower tubular body 52 and the lower wooden pillar 30L can be appropriately changed.

Here, as shown in FIG. 3, the axial length L1 of the upper tubular body 42 is longer than the axial length L2 of the lower tubular body 52 (L1> L2). As a result, as shown in FIG. 2, when the upper tubular body 42 is inserted into the lower tubular body 52, the tip end portion 42T of the upper tubular body 42 becomes the lower side of the lower tubular body 52. It is in contact with the base plate 54. The upper wooden pillar 30U is supported on the upper side of the wooden deck 22 by the upper tubular body 42. Then, the vertical load N (axial force) of the upper wooden pillar 30U is transmitted to the wooden core portion 30A of the lower wooden pillar 30L via the upper tubular body 42 and the lower base plate 54.

Further, in a state where the upper tubular body 42 is inserted inside the lower tubular body 52, a gap G is formed between the upper base plate 44 and the tip end portion 52T of the lower tubular body 52. From this gap G, the gap filling material 56 is filled between the outer peripheral surface of the upper tubular body 42 and the inner peripheral surface of the lower tubular body 52. The gap filling material 56 is, for example, a cement-based filler such as mortar or grout. The gap filling material 56 suppresses the relative displacement between the upper tubular body 42 and the lower tubular body 52.

The gap filling material 56 is not limited to the cement-based filler, and is, for example, an elastic body such as a rubber sheet that fills the gap between the outer peripheral surface of the upper tubular body 42 and the inner peripheral surface of the lower tubular body 52. You may.

Further, as shown in FIG. 4, the upper tubular body 42 and the lower tubular body 52 are positioned by a pair of positioning pins 60. The pair of positioning pins 60 are formed in a rod shape and are inserted into the positioning holes 62 formed in the upper tubular body 42 and the lower tubular body 52. Further, the pair of positioning pins 60 are crossed in a cross shape in a plan view. As a result, the upper tubular body 42 and the lower tubular body 52 are positioned in two horizontal directions.

As shown in FIG. 2, the upper tubular body 42 and the lower tubular body 52 penetrate the wooden floor 20 in the vertical direction. Specifically, as shown in FIGS. 5 and 6, the corners 22C of the four wooden decks 22 constituting the wooden floor 20 are butted on the lower wooden pillar 30L. An arcuate notch 24 is formed in the corner portion 22C of each wooden deck 22. By combining the cutout portions 24 of the four wooden floor slabs 22, a circular through hole through which the support member 40 is penetrated is formed.

Further, a mounting hole 26 is formed in the corner portion 22C of each wooden deck 22. As shown in FIG. 2, a mounting rod 28 raised from the lower base plate 54 is inserted into the mounting hole 26. The mounting rod 28 is formed of, for example, a long bolt or the like. A nut 29 is attached to the tip of the attachment rod 28. As a result, the wooden deck 22 is fixed to the mounting rod 28.

(Concrete slab)
A concrete slab 70 is provided on the wooden floor 20. The concrete slab 70 is made of RC, for example. A gap G is formed between the upper surface of the concrete slab 70 and the lower surface of the upper wooden pillar 30U. As a result, the vertical load N of the upper wooden pillar 30U is not transmitted to the wooden floor 20 via the concrete slab 70.

(Fireproof seal)
A fireproof seal 72 is provided in the gap G between the upper surface of the concrete slab 70 and the lower surface of the upper wooden pillar 30U. The fireproof seal 72 is provided in an annular shape along the outer peripheral portion of the lower surface of the upper wooden pillar 30U. The fireproof seal 72 suppresses the intrusion of fire heat into the support member 40 side.

(Mounting structure of wooden deck)
As shown in FIGS. 5 and 6, adjacent wooden decks 22 are connected by combining the uneven portions of each other. Specifically, recesses 66 and protrusions 68 are alternately formed at the ends of adjacent wooden decks 22. Then, the convex portion 68 of the other wooden deck 22 is fitted into the concave portion 66 of one wooden deck 22, and the concave portion 66 of the other wooden deck 22 is fitted into the convex portion 68 of one wooden deck 22. Can be matched. As a result, the adjacent wooden deck 22 is prevented from being displaced in the direction orthogonal to the adjacent direction (arrow Y direction) (arrow X direction).

Here, since the adjacent wooden decks 22 are not joined, there is a possibility that they will be separated in the adjacent direction (arrow Y direction) at the time of an earthquake, for example. Therefore, in the present embodiment, as shown in FIG. 1, the adjacent wooden decks 22 are connected by the connecting bar 74. Specifically, the connecting bar 74 is formed in a rod shape by, for example, flat steel. The connecting bars 74 are arranged in a horizontal brace shape on a plurality of wooden decks 22.

The connecting bar 74 is arranged over the adjacent wooden floor slabs 22, and as shown in FIG. 7, is fixed to the upper surface 22U of each wooden floor slab 22 by a fixing member 76 such as a lug screw. As a result, the adjacent wooden decks 22 are connected via the connecting bar 74. A finishing material 78 is attached to the lower surface of the wooden floor slab 22, but the finishing material 78 can be omitted as appropriate.

Further, FIGS. 8 and 9 show a joint portion between the concrete beam 14 and the wooden deck 22. As shown in FIG. 8, the concrete beam 14 is formed by a half precast method. The concrete beam 14 has a precast concrete portion 14A and a top concrete portion 14B.

The precast concrete portion 14A is formed in a flat rectangular parallelepiped shape. A plurality of lower end beam main bars 80 and shear reinforcing bars 82 are embedded in the precast concrete portion 14A. A top concrete portion 14B is provided on the precast concrete portion 14A.

The top concrete portion 14B is formed by placing cast-in-place concrete on the precast concrete portion 14A. A plurality of upper end beam main bars 84 are embedded in the top concrete portion 14B. Further, in the top concrete portion 14B and the precast concrete portion 14A, shear reinforcing bars 86 extending over the lower end beam main bar 80 and the upper end beam main bar 84 are embedded.

Here, the width of the top concrete portion 14B is narrower than the width of the precast concrete portion 14A. As a result, the ends 14A1 on both sides of the precast concrete portion 14A in the width direction are projected to both sides from the top concrete portion 14B. The end portion of the wooden deck 22 is placed on the end portion 14A1 of the precast concrete portion 14A. Further, a concrete slab 70 is provided on the wooden deck 22 and the concrete beam 14.

As shown in FIG. 9, a plurality of recesses 66 and protrusions 68 are alternately arranged at the ends of the wooden deck 22. On-site concrete constituting the top concrete portion 14B is cast in each recess 66. That is, the top concrete portion 14B is inserted into each recess 66. As a result, the concrete beam 14 and the wooden deck 22 are joined.

Further, reinforcing bars 88 are arranged in the recess 66. The reinforcing bar 88 penetrates the recess 66 in the vertical direction and extends to the precast concrete portion 14A and the concrete slab 70. The precast concrete portion 14A, the top concrete portion 14B, and the concrete slab 70 are integrated by the reinforcing bar 88.

(Action and effect)
Next, the operation and effect of the first embodiment will be described.

As shown in FIGS. 2 and 3, according to the column support structure 10 according to the present embodiment, the support member 40 includes an upper tubular body 42, a lower tubular body 52, and a gap filling material 56. Have. The upper tubular body 42 is provided on the lower surface of the upper wooden pillar 30U. On the other hand, the lower tubular body 52 is provided on the upper surface of the lower wooden pillar 30L. The lower tubular body 52 penetrates the wooden floor 20 in the vertical direction. Further, the upper tubular body 42 is inserted inside the lower tubular body 52.

The tip portion 42T of the upper tubular body 42 is in contact with the lower base plate 54. The upper wooden pillar 30U is supported on the upper side of the wooden floor 20 by the upper tubular body 42. That is, the vertical load N of the upper wooden pillar 30U is transmitted to the wooden core portion 30A of the lower wooden pillar 30L via the upper tubular body 42 and the lower base plate 54. Therefore, since the vertical load N transmitted from the upper wooden pillar 30U to the wooden floor 20 is reduced, defects due to the high vertical load N of the wooden floor 20 are suppressed.

When the edge between the upper wooden pillar 30U and the wooden floor 20 is completely cut, the vertical load N is not transmitted from the upper wooden pillar 30U to the wooden floor 20. In this case, the defect of the wooden floor 20 due to the vertical load N can be eliminated.

Further, the gap between the upper tubular body 42 and the lower tubular body 52 is filled with the gap filling material 56. As a result, the horizontal misalignment between the upper tubular body 42 and the lower tubular body 52 is suppressed.

Further, as shown in FIG. 4, the upper tubular body 42 and the lower tubular body 52 are positioned in two horizontal directions by a pair of positioning pins 60. Thereby, the positioning accuracy of the upper wooden pillar 30U with respect to the lower wooden pillar 30L can be improved.

Further, a fireproof structure is applied to the upper wooden pillar 30U and the lower wooden pillar 30L. Further, as shown in FIG. 2, a fireproof seal 72 is provided between the upper surface of the concrete slab 70 and the lower surface of the upper wooden pillar 30U. The fireproof seal 72 suppresses the intrusion of fire heat into the support member 40 side. Therefore, the fire resistance of the wooden pillar 30 can be improved.

(Modified example of the first embodiment)
Next, a modified example of the first embodiment will be described.

In the first embodiment, the upper wooden pillar 30U is supported by the lower wooden pillar 30L via the upper tubular body 42, but the first embodiment is not limited to this. For example, as shown in FIG. 10, the upper wooden pillar 30U may be supported by the lower wooden pillar 30L via the lower tubular body 52.

Specifically, in the modified example shown in FIG. 10, the upper tubular body 42 is inserted inside the lower tubular body 52, and in this state, the tip portion 52T of the lower tubular body 52 is the upper base plate. It is in contact with 44.

On the other hand, a gap G is formed between the tip end portion 42T of the upper tubular body 42 and the lower base plate 54. That is, the upper tubular body 42 is held in a suspended state on the upper base plate 44. As a result, the vertical load N of the upper wooden pillar 30U is transmitted from the upper base plate 44 to the lower wooden pillar 30L via the lower tubular body 52 and the lower base plate 54.

The lower tubular body 52 is an example of the first tubular body, and the upper tubular body 42 is an example of the second tubular body.

Further, a lid portion 58 is provided on the tip portion 42T of the upper tubular body 42. The lid portion 58 is formed in a disk shape, and its outer peripheral portion is joined to the tip portion 42T of the upper tubular body 42 by welding or the like. The lid 58 closes the opening of the tip 42T of the upper tubular body 42.

The gap between the outer peripheral surface of the upper tubular body 42 and the inner peripheral surface of the lower tubular body 52 is filled with the gap filling material 56. The gap filling material 56 fills the gap between the outer peripheral surface of the upper tubular body 42 and the inner peripheral surface of the lower tubular body 52. As a result, the horizontal misalignment between the upper tubular body 42 and the lower tubular body 52 is suppressed.

The gap filling material 56 is filled inside the lower tubular body 52, for example, through a filling hole (not shown) formed in the lower tubular body 52.

Further, the gap filling material 56 is filled over the entire length of the lower tubular body 52, and extends over the lower base plate 54 and the upper base plate 44. As a result, the vertical load N of the upper wooden pillar 30U is transmitted to the lower wooden pillar 30L via the upper base plate 44, the gap filling material 56, and the lower base plate 54.

Further, the gap filling material 56 is also filled tightly between the lid portion 58 of the upper tubular body 42 and the lower base plate 54. As a result, the vertical load N of the upper wooden pillar 30U is transmitted to the lower wooden pillar 30L via the upper tubular body 42, the lid portion 58, the gap filling material 56, and the lower base plate 54. Therefore, the vertical load N of the upper wooden pillar 30U can be reliably transmitted by the lower wooden pillar 30L.

The lid portion 58 can be omitted as appropriate. In this case, the gap filling material may or may not be filled inside the upper tubular body 42.

Next, in the first embodiment, the upper tubular body 42 is inserted inside the lower tubular body 52, but conversely, the lower tubular body is inserted inside the upper tubular body. You may. In this case, the upper wooden pillar 30U may be supported by the lower pillar via the upper tubular body, or may be supported by the lower pillar via the lower tubular body. That is, in the first embodiment, the first tubular body is provided on either the lower column or the upper column, and the second tubular body supporting the upper column on either the lower column or the upper column. Can be provided.

(Second Embodiment)
Next, the second embodiment will be described. In the second embodiment, members and the like having the same configuration as the first embodiment are designated by the same reference numerals, and the description thereof will be omitted as appropriate.

(Column support structure)
As shown in FIGS. 11 and 12, the column support structure 90 according to the second embodiment has a wooden beam 92, an upper wooden column 100U arranged above the wooden beam 92, and a lower side of the wooden beam 92. It is applied to the lower wooden pillar 100L to be arranged.

The wooden beam 92 is formed of, for example, laminated lumber or the like, and is arranged between the lower wooden pillar 100L and the upper wooden pillar 100U. Further, the wooden beam 92 is placed on the upper surface of the lower wooden pillar 100L and is supported by the lower wooden pillar 100L. A wooden floor 20 and a concrete slab 70 are provided on the wooden beam 92.

The upper wooden pillar 100U and the lower wooden pillar 100L are formed of, for example, laminated wood. The upper wooden pillar 100U is supported by the lower wooden pillar 100L via the support member 110. The support member (support structure) 110 includes a plate-shaped member 112, a pair of load transmitting portions 120, a pair of load receiving portions 130, and a pair of rotation restraining portions 140.

As shown in FIG. 13, the plate-shaped member 112 is formed in a plate shape by a metal plate such as a steel plate, and is arranged with the thickness direction as the width direction of the wooden beam 92. The plate-shaped member 112 is vertically penetrated through a through hole formed in the wooden beam 92. Further, the intermediate portion of the plate-shaped member 112 is joined to the wooden beam 92 by a plurality of joining members 114 such as drift pins.

The lower end 112L of the plate-shaped member 112 protrudes from the lower surface 92L of the wooden beam 92 and is inserted into the mounting hole 116 formed on the upper surface of the lower wooden column 100L. The lower end 112L of the plate-shaped member 112 is joined to the capital of the lower wooden pillar 100L by a joining member 118 such as a drift pin.

Further, on both sides of the plate-shaped member 112, a pair of load transmitting portions 120 are provided to distribute and transmit the vertical load of the upper wooden pillar 100U to the upper surface of the lower wooden pillar 100L. The pair of load transmitting portions 120 are formed in a plate shape by a metal plate such as a steel plate. Further, the pair of load transmitting portions 120 extend from the plate-shaped member 112 to both the left and right sides, and are arranged along the upper surface of the lower wooden pillar 100L. The lower surface of the pair of load transmitting portions 120 is a load transmitting surface 120A that is in surface contact with the upper surface of the lower wooden pillar 100L.

Further, the pair of load transmitting portions 120 are arranged along the lower surface 92L of the wooden beam 92. The upper surface of the load transmitting portion 120 is brought into surface contact with the lower surface 92L of the wooden beam 92 to be a rotation restraint surface 120B that restrains the rotation of the wooden beam 92.

The upper end portion 112U of the plate-shaped member 112 protrudes from the upper surface 92U of the wooden beam 92 and is inserted into the mounting hole 122 formed on the lower surface of the upper wooden pillar 100U. The upper end 112U of the plate-shaped member 112 is joined to the column base of the upper wooden column 100U by a joining member 124 such as a drift pin.

Further, on both sides of the plate-shaped member 112, load receiving portions 130 for receiving the vertical load N of the upper wooden pillar 100U are provided. The load receiving portion 130 is formed of L-shaped steel. The load receiving portion 130 has a flange portion 130A joined to the plate-shaped member 112, and an extending portion 130B extending from the upper end portion of the flange portion 130A and arranged along the lower surface of the upper wooden column 100U. ing. The upper surface of the extending portion 130B is a load receiving surface 130B1 that is in surface contact with the lower surface of the upper wooden pillar 100U. The load receiving portion 130 is not limited to the L-shaped steel, and may be formed of a C-shaped steel, flat steel, or the like.

Further, on both sides of the plate-shaped member 112, rotation restraint portions 140 for restraining the rotation of the wooden beam 92 are provided. The rotation restraint portion 140 is formed of L-shaped steel and is arranged below the load receiving portion 130. The rotation restraint portion 140 has a flange portion 140A joined to the plate-shaped member 112, and an extension portion 140B extending from the lower end portion of the flange portion 140A and arranged along the upper surface 92U of the wooden beam 92. ing. The lower surface of the extension portion 140B is brought into surface contact with the upper surface 92U of the wooden beam 92 to be a rotation restraint surface 140B1 that restrains the rotation of the wooden beam 92.

The rotation restraint surface 140B1 of the rotation restraint portion 140 may, for example, be able to restrain the rotation of the wooden beam 92 (in the direction of arrow R in FIG. 11) during an earthquake, and is the upper surface of the wood beam 92 during normal times other than an earthquake. It may be non-contact with 92U.

Further, as shown in FIG. 12, a wooden floor slab 22 and a concrete slab 70 constituting the wooden floor 20 are provided on the extending portion 140B of the rotation restraint portion 140.

The shapes of the load transmitting portion 120, the load receiving portion 130, and the rotation restraining portion 140 are appropriately changed, and may be formed of, for example, flat steel, L-shaped steel, or C-shaped steel.

(Action and effect)
Next, the operation and effect of the second embodiment will be described.

As shown in FIG. 12, according to the column support structure 90 according to the present embodiment, the support member 110 has a plate-shaped member 112. The plate-shaped member 112 penetrates the wooden beam 92 in the vertical direction. The lower end portion 112L of the plate-shaped member 112 is inserted into the stigma of the lower wooden pillar 100L. On the other hand, the upper end portion 112U of the plate-shaped member 112 is inserted into the column base portion of the upper wooden column 100U. The plate-shaped member 112 supports the upper wooden column 100U on the upper side of the wooden beam 92.

As a result, the vertical load N of the upper wooden column 100U is transmitted to the stigma of the lower wooden column 100L via the plate-shaped member 112. Therefore, the vertical load N transmitted from the upper wooden column 100U to the wooden beam 92 is reduced.

Further, the plate-shaped member 112 is provided with a pair of load transmitting portions 120. The pair of load transmitting portions 120 have a load transmitting surface 120A that is in surface contact with the upper surface of the lower wooden pillar 100L. As a result, the vertical load N of the upper wooden column 100U is not only transmitted from the lower end 112L of the plate-shaped member 112 to the stigma of the upper wooden column 100U, but also below the load transmitting surface 120A of the pair of load transmitting portions 120. It is dispersed and transmitted on the upper surface of the side wood pillar 100L. Therefore, the number of joining members 118 (see FIG. 13) for joining the lower end portion 112L of the plate-shaped member 112 to the stigma of the lower wooden column 100L can be reduced.

Further, the plate-shaped member 112 is provided with a pair of load receiving portions 130. The pair of load receiving portions 130 has a load receiving surface 130B1 (see FIG. 13) that is in surface contact with the lower surface of the upper wooden pillar 100U. As a result, the vertical load N of the upper wooden column 100U is not only transmitted from the column base portion of the upper wooden column 100U to the upper end portion 112U of the plate-shaped member 112, but also plate-shaped via the pair of load receiving portions 130. It is transmitted to the member 112. Therefore, the number of joining members 124 (see FIG. 13) for fixing the upper end 112U of the plate-shaped member 112 to the column base of the upper wooden column 100U can be reduced.

Further, the plate-shaped member 112 is provided with a pair of rotation restraint portions 140. The pair of rotation restraint portions 140 has a rotation restraint surface 140B1 that is in surface contact with the upper surface of the wooden beam 92. Further, the pair of load transmitting portions 120 described above have a rotation restraint surface 120B that is in surface contact with the lower surface 92L of the wooden beam 92. The pair of load transmitting portions 120 and the rotation restraining portion 140 restrain the rotation of the wooden beam 92 indicated by the arrow R in FIG.

There is a concern that the vertical load N of the upper wooden column 100U is transmitted from the pair of rotation restraint portions 140 to the wooden beam 92, but the vertical load N of the upper wooden column 100U is more rigid than the wooden beam 92. Concentrate on the tall plate-like member 112. Therefore, the vertical load N of the upper wooden pillar 100U is mainly transmitted to the plate-shaped member 112. Therefore, the vertical load N of the upper wooden column 100U transmitted from the pair of rotation restraint portions 140 to the wooden beam 92 does not become a problem.

(Modified example of the second embodiment)
Next, a modified example of the second embodiment will be described.

In the second embodiment, the wooden floor 20 and the concrete slab 70 are arranged between the upper wooden pillar 100U and the wooden beam 92, but the second embodiment is not limited to this. For example, in the modified example shown in FIG. 14, the upper wooden pillar 100U is arranged directly above the wooden beam 92. The upper wooden column 100U is supported on the upper side of the wooden beam 92 by a support member 111 provided at the stigma of the lower wooden column 100L.

As shown in FIG. 15, a wooden floor slab 22 constituting the wooden floor 20 is provided on the wooden beam 92. The end faces of the adjacent wooden floor slabs 22 are butted against each other on the wooden beam 92. Further, notch portions 25 on which the upper wooden pillar 100U is arranged are formed on the end faces of the adjacent wooden floor slabs 22.

As shown in FIG. 14, the support member 111 has a plate-shaped member 112, a pair of load transmitting portions 120, and a pair of load receiving portions 150. The pair of load receiving portions 150 are formed in a plate shape by a metal plate such as a steel plate. The pair of load receiving portions 150 extend from the plate-shaped member 112 to both the left and right sides, and are arranged along the lower surface of the upper wooden pillar 100U. The upper surface of the pair of load receiving portions 150 is a load receiving surface 150A that is in surface contact with the lower surface of the upper wooden pillar 100U.

Further, the lower surface of the pair of load receiving portions 150 is a rotation restraint surface 150B that restrains the rotation of the wooden beam 92. That is, the pair of load receiving portions 150 also function as rotation restraint portions.

A filler 152 such as mortar or grout is filled between the rotation restraint surface 150B of the pair of load receiving portions 150 and the upper surface 92U of the wooden beam 92. As a result, it is possible to increase the rotational restraining force of the wooden beam 92 by the pair of load receiving portions 150 while absorbing the construction error of the wooden beam 92 and the like.

Next, in the second embodiment, the support member 110 is provided with a pair of load transmitting portions 120, a pair of load receiving portions 130, and a pair of rotation restraining portions 140, but the pair of load transmitting portions 120 and a pair of loads The receiving portion 130 and the pair of rotation restraint portions 140 can be omitted as appropriate.

Further, the upper wooden pillar 100U and the lower wooden pillar 100L of the second embodiment are formed in a wall column having a rectangular cross section, but the upper column and the lower column may be formed in a square cross section.

(Modified examples of the first embodiment and the second embodiment)
Next, modifications of the first embodiment and the second embodiment will be described. In the following, various modifications will be described using the first embodiment as an example, but these modifications can be appropriately applied to the second embodiment.

In the first embodiment, the fireproof structure is applied to the upper wooden pillar 30U and the lower wooden pillar 30L, but the upper wooden pillar and the lower wooden pillar may be non-fireproof.

Further, in the first embodiment, the upper wooden column 30U and the lower wooden column 30L are made of wood, but the upper column and the lower column are not limited to wooden (wooden), but are made of steel, RC, or SRC. , CFT structure, etc. may be used.

Further, in the first embodiment, the wooden horizontal member is the wooden floor 20, but the wooden horizontal member is not limited to the wooden floor and may be a wooden beam or the like.

Although one embodiment of the present invention has been described above, the present invention is not limited to such an embodiment, and one embodiment and various modifications may be used in combination as appropriate. Of course, it can be carried out in various modes as long as it does not deviate.

10 Pillar support structure 20 Wooden floor (wooden horizontal member)
30U upper wooden pillar (upper pillar)
30L lower wooden pillar (lower pillar)
40 Support member 42 Upper tubular body (second tubular body)
52 Lower tubular body (first tubular body)
56 Gap filling material 90 Pillar support structure 92 Wood beam (wood horizontal member)
100U upper wooden pillar (upper pillar)
100L lower wooden pillar (lower pillar)
110 Support member 111 Support member 112 Plate-shaped member 112U Upper end (upper end of plate-shaped member)
112L lower end (lower end of plate-shaped member)
152 Filler

Claims (3)

With a wooden floor
The upper pillar arranged on the upper side of the wooden floor and
The lower pillars arranged under the wooden floor and
A support member provided at the stigma of the lower pillar, penetrating the wooden floor vertically and arranged between the upper pillar and the lower pillar, and supporting the upper pillar on the upper side of the wooden floor. When,
Pillar support structure with. The support member
A first tubular body provided on either one of the lower pillar and the upper pillar,
The upper pillar is provided on either one of the lower pillar and the upper pillar, and is inserted into or inside the first tubular body, and the upper pillar is inserted above the wooden floor. The second tubular body to support and
A gap filling material that fills the gap between the first tubular body and the second tubular body,
Have,
The pillar support structure according to claim 1. The support member penetrates the wooden floor in the vertical direction, the lower end is inserted into the stigma of the lower pillar, and the upper end is inserted into the pedestal of the upper pillar, and the upper end is inserted into the upper side of the wooden floor. Has a plate-like member that supports the upper pillar.
The pillar support structure according to claim 1.

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