JPH10238016A - Composite column - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve mechanical strength without increasing a cross sectional area by using a composite column provided with a main body member having a square basic cross section and made of natural wood or synthetic wood with recesses penetrated in the longitudinal direction on its side faces and reinforcing materials fixed to the recesses of the main body member. SOLUTION: This composite column material V is used as the column of a wooden building, and it is constituted of a main body member 1 and reinforcing materials 2, 2. The main body member 1 has a square basic cross section and recesses 1a, 1a penetrated on both opposite face sides. The recesses 1a, 1a are formed in the prescribed width and depth size, and through holes 1b for fixing the recesses 1a, 1b are bored on the bottom faces. The reinforcing materials 2, 2 are fixed to the recesses 1a, 1b to reinforce the mechanical strength of the main body member 1, they are made of a material having the elastic coefficient larger than that of the main body member 1 such as an iron material, and they are formed into a nearly U-shape slightly smaller in size than the recesses 1a. The mechanical strength can be improved without increasing the cross sectional area.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a composite column material used as a column of a wooden building such as a framing method.

[0002]

2. Description of the Related Art Conventionally, timber structures of the frame construction method are constructed of horizontal members such as beams, columns, braces, and the like using wooden materials made of natural wood or synthetic wood. In recent years, for the purpose of improving the living environment, a wooden house with a three-story structure has been spreading mainly in urban areas. In this three-story wooden house, the buckling load of the structural members in the frame construction method, etc.
For the purpose of improving the mechanical strength, use of a composite member having a reinforcing material such as a steel frame material having a higher elastic modulus than conventional wood has been proposed.

[0003] Specifically, in a wooden structure of a framed construction method, a steel frame is used as a beam material that greatly affects the strength, stability and durability of the structure, and the steel beam is combined with a wooden material to form a building. As shown in FIG. 7, a composite beam material in which a steel beam a and a wooden material b are combined as a horizontal member has been proposed. In this composite beam, the wooden members b, b and members such as columns are tightly combined.

[0004] Another example of the above-mentioned composite member is disclosed in Japanese Utility Model Laid-Open No. 55-48925 as wood having a reinforcing steel reinforcing material as shown in FIG. That is, in this material, a reinforcing material a formed of a lightweight steel frame or the like is formed in a predetermined position of a wood b to form a groove for attaching or embedding the reinforcing material a, and the reinforcing material a is arbitrarily fixed to the groove of the wood pillar b. It was done.

On the other hand, a wooden house having a three-story structure has a large weight per unit area, and a larger compressive load is applied to a pillar than a general two-story house. Therefore, for example, a wooden pillar having a large cross-sectional area may be used in order to increase the strength safety factor against the compression load on the pillar. That is, in a general two-story house, a pillar having a side length of 105 mm is used, whereas in a three-story house, a pillar having a side length of 120 mm is sometimes used.

[0006]

By the way, in the case of using the above-mentioned pillar material having a large cross-sectional area, the pillar material is generally partially cut from the wall toward the inside of the house in order to improve the appearance design of the house. To protrude. As a result, as a place where the pillars are provided facing each other, particularly in a corridor space, etc., the width is partially extremely narrowed, giving a feeling of strangeness to the occupants. As a countermeasure, when a composite column as shown in FIG. 8 is used, the mechanical strength such as buckling load as the column is improved, but the strength is improved and the weight of the column itself is increased. Has increased, and there is a concern that the seismic resistance of houses may be reduced.

The present invention has been made in view of the above circumstances, and has as its object to reduce the increase in weight,
An object of the present invention is to provide a composite column having improved mechanical strength without increasing the cross-sectional area.

[0008]

According to a first aspect of the present invention, there is provided a composite column material having a square basic cross section and a concave portion penetrating in a longitudinal direction of a side surface thereof. Alternatively, a main body made of synthetic wood, and a reinforcing material fixed to the recess for reinforcing the mechanical strength of the main body,
In the composite column member provided with the above, the reinforcing material has a space portion that continues in the longitudinal direction. Thus, the reinforcing member has a space.

Further, in the composite column material according to the second aspect, the space portion according to the first aspect has an opening continuously provided in a longitudinal direction. Thereby, the reinforcing material can be fixed through the opening.

[0010] In a third aspect of the present invention, the reinforcing member according to the first or second aspect is fixed to opposite side surfaces of the main body. Thus, the main body can be held and fixed between the reinforcing members.

Further, in the composite column member according to the fourth aspect, the reinforcing member according to the first to third aspects has a dividing wall integrally dividing the space portion along a longitudinal direction. This allows
The space portion is divided in the longitudinal direction by the dividing wall.

[0012] In the composite pillar according to the fifth aspect, the reinforcing member according to the first to fourth aspects has a joining means used at a longitudinal end thereof for joining and fixing the composite pillar and the horizontal member. Have. Thereby, the composite column material is joined and fixed to the horizontal member by the joining means provided on the reinforcing material.

According to a sixth aspect of the present invention, there is provided a composite column member, wherein the joining means according to the fifth aspect is provided so as to project in a direction orthogonal to the longitudinal direction. As a result, the projecting portion of the composite column material is joined and fixed to the horizontal member.

According to a seventh aspect of the present invention, there is provided a reinforcing member according to the second to sixth aspects, wherein fixing means for joining and fixing a wiring device fixing box for indoor wiring is arranged in parallel with the opening. . As a result, the wiring device fixing box for the indoor wiring is fixed in parallel with the opening by the fixing means provided on the reinforcing member.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a first embodiment of a composite column according to the present invention will be described with reference to FIGS. 1 to 4 and a second embodiment will be described with reference to FIG. The configuration will be described with reference to FIG.

[First Embodiment] FIG. 1 is an exploded perspective view of a composite column material according to a first embodiment. FIG. 2 is an explanatory diagram for explaining an improvement in buckling load and a reduction in weight by the composite column material. FIG. 3 is an explanatory diagram illustrating a construction state of the composite column member illustrated in FIG. 1. FIG. 4 is an explanatory diagram showing a construction state of another example of the first embodiment.

The composite pillar V is used, for example, as a pillar of a wooden structure of a framed construction, and includes a main body 1 and reinforcing members 2 and 2.

The main body 1 is made of natural wood or synthetic wood, and has a basic square cross section, and has recesses 1a and 1a penetrating in the longitudinal direction on both opposing side surfaces. The recesses 1a, 1a are formed to have predetermined widths and depths as viewed in the cross-sectional arrows, and have a predetermined number of through holes 1b for fixing reinforcing members 2, 2 described later on the bottom surface thereof.
Are provided at predetermined intervals.

The reinforcing members 2, 2 are fixed to the recesses 1a, 1a in order to reinforce the mechanical strength of the main body 1, and are made of a material having a higher elastic coefficient than the main body 1, such as an iron material. , Having a substantially U-shape having a width dimension slightly smaller than the width of the recess 1a and a height dimension substantially the same as the depth of the recess 1a when viewed in a cross-sectional view. It is formed in a shape. Therefore, the reinforcing members 2 have a space 2a extending in the longitudinal direction thereof, and have openings in which the space 2a is arranged in the longitudinal direction. A predetermined number of through holes 2b for fixing the reinforcing material 2 to the main body 1 are formed at predetermined intervals in the U-shaped bottom. Further, as shown in FIG. 3, the reinforcing members 2, 2 are configured at their longitudinal ends as composite column members V, as shown in FIG. 3.
For example, joining pieces 2c, 2c corresponding to joining means used for joining and fixing to a base member H or a horizontal member such as a beam member are protruded in a direction orthogonal to the longitudinal direction of the reinforcing member 2. In addition,
The joining pieces 2c, 2c are appropriately provided with through holes 2d for inserting the joining bolts F when joining with the horizontal member.

The composite column member V described above is disposed in the recesses 1a, 1a of the main body member 1 so that the U-shape of the reinforcing member 2 faces backward, and a predetermined number of fixing bolts 3a are transparent. The main body 1 and the reinforcing member 2 are inserted through the hole 2b and the through hole 1b, screwed with the nut 3b, and fixedly connected to each other so as to sandwich the main body 1 between the reinforcing members 2 and 2. . Therefore, the head of the fixing bolt 3a or the nut 3b does not protrude from the side surface of the composite pillar V.

The strength design of the composite column material V for buckling strength, which is one of the mechanical strengths, is the same as for general column materials, because the strength of each component member is based on a concept called Euler buckling theory. Can be calculated as the sum of That is, the buckling load Pcr of each member of the above composite column material
Is calculated by the following equation.

[0022]

(Equation 1)

Here, E: longitudinal elastic modulus of the material, L: length, I: second moment of area, π: pi.

Now, the composite column member V has a basic cross section of 10
The main body 1 having a square shape of 5 mm has a width of 40 m.
m, reinforcing material with height 40mm, width 40m
m, a reinforcing material having a height dimension of 40 mm, a U-shaped cross section having an opening on one surface and having the above-mentioned space portion 2a, is fixed to one side surface of the main body 1 and both side surfaces facing each other. When the buckling load and the weight are calculated, the results are as shown in FIG. 2 (note that the calculation in the figure is based on the assumption that the longitudinal elastic modulus E = 800 kgf / square mm, the specific gravity is 0.9, and the reinforcing material is , The longitudinal elastic modulus E = 21000 kgf / square mm, and the specific gravity is 7.8).

That is, the strength of the buckling load is increased by fixing the reinforcing member 2 and further increasing the number of the reinforcing members 2, and when the U-shaped reinforcing member is used, the buckling load is slightly increased. Although the magnitude of the buckling load is reduced, the weight of the composite column can be significantly reduced. Although the E-shaped reinforcing material in the figure will be described later, as a measure for improving the buckling load and reducing the weight of the composite column material, when focusing on the buckling load value per unit weight, only the conventional wood material is used. It can be seen that the value is 0.21 (t / kg) which is the closest to 0.28 (t / kg) of the configuration of FIG.

As shown in FIG. 3, the composite column V has a reinforcing member 2 in which the end face side of the joining piece 2c, which is a joining means provided on the reinforcing member 2, is a composite column V After being in contact with the side surface of the base H which is a horizontal member together with the end surface of
Are joined by inserting a joining bolt F into the joint. Therefore, the compressive load from the end face side from the building structure can be supported equally with the main body 1. Further, as shown in FIG. 4, it is possible to join with a horizontal member such as a base without using the joining fitting M, and therefore, it can be easily constructed. Further, there is also an effect that the gypsum board P or the like as the interior base material can be fixed to the column V and the horizontal member H without forming a cutout for escape to the joining fitting M.

When the composite column member V is used as a structural member of the frame construction method, the reinforcing member 1 is formed to have the space 2a. A connecting wire can be provided in the space 2a. That is, this connection wire can be appropriately provided in the hollow portion between the studs and the interior base panel in the wall provided between the rooms of the house, but in the outer wall and the like, a conventional column material is used. Sometimes, it is disposed in a separately provided wiring conduit along with a heat insulating material such as a glass wool material in a hollow portion between the pillars and between the exterior material and the interior base panel. In contrast,
When the above-mentioned composite column material V is used, the above-mentioned connecting electric wires can be connected to the space 2
a can be arranged vertically.

According to the composite column member V described above, since the reinforcing member 2 is formed with a space, the increase in weight can be reduced and the buckling load can be increased without increasing the cross-sectional area. . Further, since the reinforcing member 2 can be fixed through the opening 2a, the fixing bolt 3a and the nut 3b can be easily screwed, and the reinforcing member 2 can be easily fixed. Also,
Since the main body 1 can be held and fixed between the reinforcing members 2 and 2, the compressive load can be uniformly supported by the reinforcing members without applying a compressive load to the main body 1. The flexural load strength can be stably secured. Further, since the composite column member V is joined and fixed to the horizontal member by the joining means provided on the reinforcing members 2 and 2, it is possible to uniformly support the compressive load from the building structure together with the main body member, Thus, the compression load can be supported more stably. Further, since the composite pillar V has a projecting portion fixedly joined to the horizontal member, it can be easily constructed.

[Second Embodiment] FIG. 5 is a cross-sectional view of a composite column according to a second embodiment, as viewed from the direction of the arrow.

In this composite column material, the shape of the reinforcing member 2 is different from that of the first embodiment, and the other components are substantially the same as those of the first embodiment.

The reinforcing members 2 and 2 are made of a material having a higher elastic modulus than that of the main body 1 such as an iron material as in the first embodiment, and are formed of A partition wall 2e that divides the space 2a into two spaces 2a1 and 2a2 along the longitudinal direction with a width slightly smaller than the width and a height substantially the same as the depth of the recess 1a. It has an E shape and is formed in a long shape. The E-shaped space portions 2a1 and 2a2 are divided into a space portion 2a1 having a large space width and a space portion 2a2 having a smaller width than the space portion 2a2. A predetermined number of through holes 2 for fixing the reinforcing material 2 to the main body 1
b is perforated in the same manner as in the first embodiment.

The composite column member V described above is also disposed in the recesses 1a, 1a of the main body member 1 so that the E-shape of the reinforcing member 2 faces backward, and a predetermined number of fixing bolts 3a are transparent. The main body 1 and the reinforcing member 2 are fixed by being inserted into the holes 2b and the through holes 1b and screwed with the nuts 3b.

The strength design of the composite column material V with respect to buckling strength, which is one of the mechanical strengths, is as follows.
A cross section E having a width dimension of 50 mm and a height dimension of 40 mm and having the above-mentioned space portions 2a1 and 2a2 with an opening on one side.
FIG. 2 shows the calculation results of the character-shaped reinforcing members which are fixed to one side surface of the main body 1 and the opposite side surfaces.

That is, when this E-shaped reinforcing material is used, when focusing on the buckling load value per unit weight as a measure for improving the buckling load and reducing the weight of the composite column material, the conventional woody material is used. Since the value is 0.21 (t / kg) which is the closest to 0.28 (t / kg) of the configuration using only the material, the buckling load strength of the composite column material is further improved as compared with the first embodiment. And weight reduction can be achieved.

When the above-described composite column member V is used as a structural member of the frame construction method, the space is divided in the longitudinal direction by the dividing wall 2e. Therefore, it is possible to provide a connection wire to a wiring device for indoor wiring in the space 2a1,
Further, for example, the indoor wiring for a weak electric power such as a telephone wiring and a signal wiring for a TV common listening is connected to the indoor wiring which is a commercial power supply and the dividing wall 2.
e, and can be provided in the space 2a2. Then, the buckling strength of the column material is further improved, and the indoor wiring can be arranged more neatly than the first embodiment.

According to the composite column member V described above, since the space 2a is divided in the longitudinal direction by the dividing wall 2e, it is easy to arrange connection wires for indoor wiring.

[Third Embodiment] FIG. 6 is an explanatory view showing a construction state using a composite column according to a third embodiment.

In this composite column material, the shape of the reinforcing member 2 is different from that of the first embodiment, and the other components are substantially the same as those of the first embodiment.

As shown in FIG. 6, the reinforcing members 2 and 2 are made of a material having a higher elastic modulus than the main body member 1 such as an iron material as in the first embodiment, as shown in FIG. It is formed in an elongated shape having a substantially U-shape having a width dimension slightly smaller than the width and a height dimension substantially the same as the depth of the recess 1a, and a composite column material is provided at an end in the longitudinal direction. The joining pieces 2c, 2c, which are joining means used for joining and fixing to the horizontal member in the state of being configured as V, are provided so as to project in a direction orthogonal to the longitudinal direction of the reinforcing member 2. This embodiment is different from that of the first embodiment in that, for example, as shown in FIG. 6, a fixing device for joining and fixing a wiring device fixing box (hereinafter referred to as a box) 4 for indoor wiring. It is a point that the fixing pieces 2f, 2f, which are means, are arranged in parallel with the opening.

The fixing pieces 2f, 2f are formed with adjacent openings 2g, 2g for sliding in the longitudinal direction when engaging the fixed pieces 42 provided in the box 4. The fixed piece 42 corresponding to the fixing means provided on the outer surface of the box 41 constituting the box 4 is engaged with and engaged with the slit so as to be fitted and fixed. Further, the fixing pieces 2f, 2f are provided on the other end side in the longitudinal direction (not shown) in a direction opposite to the direction shown in the figure.
The composite pillar V can be constructed as one having no vertical direction. The box 4 is also provided on both sides of the outer surface of the box 41,
Along with a well-known knockout shape 41a for connecting wires to a wiring device, fixed pieces 42 are provided in directions facing each other. 2 can be fitted and fixed to the fixing pieces 2f, 2f arranged in parallel with the opening 2a.

In the composite column member V described above, as shown in FIG. 6, boxes 4 for indoor wiring are fixed in parallel with the openings by fixing pieces 2f, 2f provided on the reinforcing member 2. . Then, the connection wire to the wiring device for indoor wiring is disposed longitudinally through the space 2a without being disturbed by the glass wool material or the like, is passed through the box 4, and is connected to the wiring device.

According to the composite pillar V described above, the wiring device fixing box 4 for indoor wiring is fixed side by side to the opening by the fixing pieces 2f and 2f provided on the reinforcing member 2. Connection wires and the like for indoor wiring provided in the space 2a can be more easily arranged.

The above-described embodiment has the following features.
Although the reinforcing member has been described as having a U-shaped cross section or an E-shaped cross section, the present invention is not limited to itself, and for example, has a space portion having a substantially U-shaped cross section as viewed from the arrow. There may be. Further, as shown in FIG. 4, the reinforcing member may have no joining piece at the end portion thereof.
The number of reinforcing members may be other than two, for example, one.

[0044]

According to the first aspect of the present invention, since the reinforcing member is formed with a space, the buckling load is increased without increasing the weight and without increasing the cross-sectional area. it can.

In the composite pillar according to the second aspect, in addition to the effect of the first aspect, the reinforcing material can be fixed through the opening, so that the reinforcing material can be easily fixed.

Further, the composite column member according to the third aspect has the effect of the first or second aspect, and in addition, the main body can be held and fixed by the reinforcing members. The compressive load can be evenly supported by the reinforcing material without unevenly applying the compressive load, and the buckling load strength can be stably secured.

In the composite pillar according to the fourth aspect, in addition to the effects of the first to third aspects, the space portion is divided in the longitudinal direction by the dividing wall. It is easy to arrange the connecting wires.

The composite column according to the fifth aspect has the same effects as those of the first to fourth aspects, and the composite column is fixedly joined to the horizontal member by joining means provided on the reinforcing member. Therefore, the compressive load from the building structure can be evenly supported together with the main body material, so that the compressive load can be supported more stably.

The composite column according to the sixth aspect has the effect of the fifth aspect. In addition, the composite column has a projecting portion which is fixedly joined to the horizontal member. Can be constructed.

In the composite pillar according to the seventh aspect, in addition to the effects of the second to sixth aspects, a wiring device fixing box for indoor wiring is arranged in parallel with the opening by fixing means provided on the reinforcing member. Since they are fixed and installed, connection wires for indoor wiring and the like provided in the space can be more easily arranged.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of a composite pillar according to a first embodiment of the present invention.

FIG. 2 is an explanatory diagram for explaining improvement of buckling load and weight reduction by a composite column material.

FIG. 3 is an explanatory view showing a construction state of the composite column shown in FIG. 1;

FIG. 4 is an explanatory diagram showing a construction state of another example of the first embodiment.

FIG. 5 is a cross-sectional arrow view of a composite column material according to a second embodiment.

FIG. 6 is an explanatory diagram showing a construction state using a composite column material according to a third embodiment.

FIG. 7 is a perspective view of a conventional example.

FIG. 8 is a perspective view of another conventional example.

[Explanation of symbols]

 V Composite column material H Base (horizontal member) 1 Body material 1a Depression 2 Reinforcement 2a Space 2c Joint piece (joining means) 2e Dividing wall 2f Fixing piece (fixing means) 4 Box for fixing wiring equipment

Claims (7)

[Claims] 1. A main body made of natural wood or synthetic wood having a basic rectangular cross section and a recess penetrating in the longitudinal direction of a side surface thereof, and the recess for reinforcing the mechanical strength of the main body. And a reinforcing member fixed to the composite column material, wherein the reinforcing material has a space extending in the longitudinal direction. 2. The composite column according to claim 1, wherein the space has an opening continuously provided in a longitudinal direction. 3. The composite column according to claim 1, wherein the reinforcing member is fixed to both opposing side surfaces of the main body member. 4. The composite column material according to claim 1, wherein the reinforcing member integrally has a dividing wall that divides the space along the longitudinal direction. 5. The reinforcing material is provided at an end in a longitudinal direction thereof.
The composite column material according to any one of claims 1 to 4, further comprising a joining means used for joining and fixing the composite column material and the horizontal member. 6. The composite column material according to claim 5, wherein said joining means protrudes in a direction orthogonal to said longitudinal direction. 7. The composite column material according to claim 2, wherein said reinforcing member is provided with fixing means for joining and fixing a wiring device fixing box for indoor wiring to said opening.