JP4100363B2 - Composite member, member joining structure and joining method - Google Patents

Description

  The present invention is a composite member formed from a shape steel such as an H-section steel and a wooden member attached to the shape steel, and used as a structural member such as a pillar or beam of a building, the composite member and another structural member The joining structure and joining method have been developed from the viewpoint of high performance and rationalization of the joint portion between the composite member and the structural member.

  For example, in a wooden structure, the other structure is attached to the side of one structural member, such as when the end of a beam is joined to the side of the pillar or the lower end of the pillar is joined to the base. When joining the end of a member at a right angle, conventionally, not only these structural members are joined together, but also in order to smoothly transmit the tensile force between the structural members, special processing such as bending, welding assembly or casting is used. Dedicated joint hardware formed in various shapes is used.

  In recent years, lightweight steel shapes such as H-shaped steel and groove-shaped steel are widely used as structural members such as columns and beams of wooden buildings from the viewpoint of protecting forest resources (see Patent Documents 1 and 2). ).

  Conventionally, when joining a beam to a pillar, for example, by attaching a joining hardware such as an attracting metal to the side surface or upper and lower surface of the beam end, and connecting the joining hardware to the side surface of the column by bolting or the like. A method of indirectly pulling and joining the end of the beam to the side surface of the column is generally used (see Patent Document 1).

  In addition, a joint structure is used in which a joint metal is attached to the end of the beam in advance, and this joint is joined to the joint of the column by a drift pin, whereby the end of the beam is indirectly pulled and joined to the side of the column. It has been.

Furthermore, when joining the end of a shaped steel beam, such as an H-shaped steel, to a column, weld or bolt the end metal or splice plate to the end of the shaped steel beam. A method is generally used in which the end portion of the shaped steel beam is indirectly pulled and joined to the side surface portion of the column, such as by bolting to the side surface portion.
Japanese Utility Model Publication No. 5-61301 Japanese Patent Laid-Open No. 10-183861 JP 55-126651 A JP 62-41415 A

  However, since the above-mentioned joint hardware is attached to the outer surface portion of a structural member such as a column or beam, it is not only an obstacle when attaching a secondary member such as a joist or a trunk material, but also a structural member such as a column or beam. There is a problem that the eccentricity between the shaft center of the metal and the shaft center of the joint metal is large, and the tensile force acting on the structural member is not smoothly transmitted.

  In addition, although the above-mentioned problems such as eccentricity can be solved by joining with a drift pin, not only is the joint hardware used expensive, but machining such as drilling for inserting the drift pin is necessary. In addition to requiring a lot of labor, there were problems such as difficulty in responding to changes in the length of structural members at the construction site.

  In addition, when using shaped steel as a structural member such as a beam, end processing such as welding or drilling is required to attach a joint metal such as an end plate or splice plate, so much work is required for processing. In addition to the necessity, there are problems such as welding and bolt holes that significantly impair the performance of the base material of the structural member.

  The present invention was made to solve the above problems, and when using a composite member having a shape steel such as an H-shaped steel and a wooden member attached to the shape steel as a structural member such as a column or a beam, It is an object of the present invention to provide a composite member, a member joining structure, and a joining method, which can easily join the composite member and a structural member such as another column, and enable rational design and construction of the joint.

  The member joining structure according to claim 1 is a joining structure of a member composed of a composite member and a structural member configured by attaching a wooden member to an end portion of the shaped steel, and the wooden member is in the axial direction of the shaped steel. The wooden member and the side surface of the structural member are in close contact with each other, the wooden member is mounted symmetrically on both sides of the web of the shaped steel, and further, the end of the wooden member in the axial direction Protrudes from the end of the shape steel in the direction of the material axis, and the composite member and the structural member are joined in the direction of the material axis by a joint that penetrates the wood member in the direction of the material axis. To do.

  The present invention relates to a composite member installed as a structural member such as a beam by directly connecting a wooden member attached to a structural steel to a side portion of the other structural member with a joint bolt or a wood screw. This structure member can be joined very easily and reliably without using a special dedicated joint fitting formed by bending or casting. In this case, the other structural members are mainly assumed to be wood members, but steel materials are not particularly excluded.

  The joint is assumed to be a joint bolt, a wood screw, or a nail, and as the shape steel, for example, a thin steel plate having a thickness of 9 mm or less is formed by cold forming or welding assembly, and the cross section is grooved. Steel lumber (lightweight shaped steel) having a shape, H shape, L shape or square shape can be used as a single material or an assembly material.

In addition, since the section steel with a square cross section has a closed cross section such as a rectangle, by performing processing such as opening a hole where a hand can be inserted into the section steel at the time of joining. Can be used.
Further, the wood member can be made of either solid wood or laminated wood, and can be easily attached by nailing or bonding.

  In particular, when nailing, the wooden members can be easily attached by attaching them symmetrically to both sides of the shaped steel web and driving nails to both sides of the web. Further, the wood member is generally attached to the end portion of the shape steel in the material axis direction, but it does not specifically exclude that the wood member is attached to a portion other than the end portion such as an intermediate portion.

  An end portion of a composite member installed as a structural member such as a beam or a column can be easily joined to a side surface of another structural member such as a column or a base. In particular, the present invention eliminates the problem of eccentricity between the composite member and the structural member at the joint portion because the timber is symmetrically attached to both sides of the web, and the stress is smoothly transmitted between the members.

  The member joining structure according to claim 2 is the member joining structure according to claim 1, wherein a slit along the material axis direction is provided at the end of the wooden member, and a shape steel is fitted into the slit. It is characterized by.

  The composite member according to claim 3 is a composite member to be joined to the member to be joined, and is attached symmetrically to both sides of the shape steel and the web at the end portion in the axial direction of the shape steel. The end of the wood member in the material axis direction protrudes from the end of the shape steel in the material axis direction.

  In the present invention, since the wooden members are symmetrically attached to both sides of the web, there is no problem of eccentricity in the case of tensile joining to the column by a joint bolt or the like penetrating the wooden member, and the structural joining is clear in terms of structural mechanics. The part can be formed.

  Moreover, since the wooden member is attached to the end of the shape steel in the axial direction, it can be used particularly as a beam. In addition, since the wooden members are symmetrically attached to both sides of the web, there is no problem of eccentricity when a tensile connection is made to the column with a joint bolt or the like that penetrates the wooden member. Can be formed.

  The composite member according to claim 4 is the composite member according to claim 3, wherein a slit along the material axis direction is provided at an end of the wooden member, and a shaped steel is fitted into the slit. Is.

The method for joining members according to claim 5 includes a shape steel and a wood member attached symmetrically on both sides of the web of the end portion in the axial direction of the shape steel, and an end portion in the axial direction of the wood member. Is disposed on the side surface of the structural member, and the composite member is moved in the material axial direction by a joint that penetrates the wooden member in the material axial direction. It is characterized by joining.
According to the present invention, a composite member installed as a structural member such as a beam and another structural member such as a column can be tension-bonded very easily and reliably by a joint tool such as a joint bolt or a nail.

  The member joining method according to claim 6 is the member joining method according to claim 5, wherein a slit along the material axis direction is provided at an end portion of the wooden member, and a shape steel is fitted into the slit. It is characterized by.

  The member joining structure according to claim 1 and 2 is formed by joining the wood member and the structural member of the composite member with a joint that penetrates the wood member in the material axis direction. It can be joined very easily and reliably without using any holes.

  Further, since the wooden member is mounted symmetrically within the cross section of the section steel, the problem of eccentricity is solved, and particularly the tensile stress between the structural members at the joint is transmitted reliably and clearly.

  In addition, since the wooden member is attached to the end of the shape steel, the length of the connecting part (wrap portion) between the shape steel and the wooden member is changed, or the end of the wooden member is cut and combined. The length of the member can be freely changed.

  Further, since the wooden members are symmetrically attached to both sides of the shaped steel web, the problem of eccentricity is solved, and particularly the tensile stress between the members at the joint is transmitted reliably and clearly.

Since the composite member according to claims 3 and 4 is formed of a wooden member that is attached symmetrically to both sides of the shape steel and the web of the shape steel and is tension-bonded to the member to be joined by a joint, the structure is also It is simple and can be manufactured easily.
Moreover, since the wooden member is attached to the end of the shape steel in the material axis direction, it can be effectively used as a beam material.

  In the method for joining members according to claim 5 and 6, a composite member having a shape steel and a wood member attached to an end portion in the axial direction of the shape steel is disposed on a side surface of the structural member, and the wood member is Since the composite member and the structural member are joined by the joining tool penetrating therethrough, the composite member installed as a structural member such as a beam and another structural member such as a column can be joined very easily and reliably.

  1 and 2 show the best mode for carrying out the present invention. In the figure, the end of a beam 2 is joined to the side surface of a column 1. A wooden column is used for the column 1, and a composite beam composed of a lightweight H-shaped steel 3 and a wooden joint block 4 (wood member) attached to the end of the lightweight H-shaped steel 3 is used for the beam 2. ing.

  The lightweight H-shaped steel 3 in this case is formed in a cross-sectional H shape by cold forming or welding assembling a thin steel plate having a thickness of 9 mm or less.

  The joint block 4 is formed in a rectangular parallelepiped shape that can be fitted between the upper and lower flanges 3 a and 3 a of the lightweight H-shaped steel 3. Further, a longitudinal groove 4a into which the web 3a of the lightweight H-section steel 3 is inserted is formed at a substantially central portion on the side facing the lightweight H-section steel 3, and the axial direction of the lightweight H-section steel 3 is formed on both sides of the longitudinal groove 4a. A plurality of joint holes 4b, 4b penetrating through are formed symmetrically with respect to the longitudinal groove 4a and vertically symmetrical with respect to the neutral axis XX of the lightweight H-section steel 3. Further, the joint block 4 is formed with a plurality of mounting holes 4c, 4c penetrating in the direction perpendicular to the axis of the lightweight H-section steel 3.

  The joint block 4 may be formed by combining a plurality of members as shown in FIG. 2 (a), or for attaching a structural steel member (section steel) to an integral wooden member as shown in FIG. 2 (b). Slits (vertical grooves 4a) may be provided.

  The joint block 4 thus formed is fitted between the upper and lower flanges 3a, 3a, the side facing the column 1 slightly protrudes toward the column 1, and the web 3b is inserted into the vertical groove 4a. Further, the joint block 4 is formed into an H shape by a plurality of nails or screws 5 that pass through the mounting holes 4c, 4c and the through holes 3c, 3c formed in the web 3b of the H-shaped steel 3 so as to face the mounting holes 4c, 4c. The steel 3 is fixed to a web 3b. In this case, the nail 5 passes through the mounting holes 3c and 3c and is driven into both the blocks 4 and 4.

  Further, the end face 4d of the joint block 4 on the side facing the column 1 is in close contact with the side surface of the column 1, and is formed in the column 1 so as to face the joint holes 4b and 4b and the joint holes 4b and 4b. A plurality of joint bolts 6 and 6 are tightened horizontally in the joint holes 1a and 1a. In this way, the end portion of the beam 2 is directly tension-bonded to the side surface portion of the column 1 by the plurality of joint bolts 6 and 6.

  Since the joint portion between the column 1 and the beam 2 is configured in this way, the tensile force at the beam end due to the bending stress of the beam 2 is reliably and clarified to the column 1 side via a plurality of joint bolts 6 and 6. Is transmitted to.

  3 (a) and 3 (b) show an example in which the end of the beam 2 is directly pulled and joined to the side surface of the beam 7 made of a wooden beam via a plurality of long wood screws or long nails 8 and 8. 4A and 4B show an example in which the end portion of the beam 2 is directly tensile-joined to the side surface portion of the column 1 by a plurality of long wood screws or long nails 8.

  5 (a) and 5 (b) show an example in which the end portion of the beam 2 is directly tensile-joined by a plurality of joint bolts 6 and 6 to the side surface portion of the beam 7 made of a wooden beam. In any of the examples, the composite beam of the present invention is used as the beam 2, and the long wood screw or the long nail 8 is respectively screwed from the back side of the wooden block 4 to the column 1 or the beam 7 side.

  In the present invention, when a composite member composed of a shape steel such as an H-shaped steel and a wooden member is used as a structural member such as a pillar or beam of a building, the composite member and another structural member are joined by a joint bolt or a nail. It can be joined very easily and reliably by the tool.

The junction part of the pillar which consists of a wooden pillar, and the beam which consists of composite members is shown, (a) is the side view, (b) is a top view. (A), (b) is an exploded perspective view of a composite member end. The junction part of the beam which consists of a wooden beam and the beam which consists of composite members is shown, (a) is the side view, (b) is a top view. The junction part of the pillar which consists of a wooden pillar, and the beam which consists of composite members is shown, (a) is the side view, (b) is a top view. The junction part of the beam which consists of a wooden beam, and the beam which consists of composite members is shown, (a) is the side view, (b) is a top view.

Explanation of symbols

1 Pillar (Structural member)
2 Beam (composite member)
3 Lightweight H-section steel (section steel)
4 Wooden joint block (wooden member)
5 Nail or screw (joint)
6 Joint bolt (joint)
7 Beam (composite member)
8 Nagagi screws or nails (joint)

Claims (6)

There is a joint structure of a composite member and a structural member in which a wooden member is attached to the end of the shape steel , and the wooden member is attached to an end of the shape steel in the axial direction, and the wooden member and the structural member The wooden members are attached symmetrically to both sides of the shaped steel web, and the ends of the wooden members in the material axis direction protrude from the ends of the shaped steel in the material axis direction. And the composite member and the structural member are joined in the material axis direction by a joint that penetrates the wood member in the material axis direction. The member joining structure according to claim 1 , wherein a slit along the material axis direction is provided at an end portion of the wooden member, and a shaped steel is fitted into the slit . A composite member to be joined to a member to be joined, comprising a shaped steel and a wooden member that is symmetrically attached to both sides of the web at the axial end of the shaped steel and joined to the joined member by a joining tool The composite member is characterized in that an end portion of the wood member in the material axis direction protrudes from an end portion of the shape steel in the material axis direction . 4. The composite member according to claim 3, wherein a slit along the material axis direction is provided at an end of the wooden member, and a shaped steel is fitted into the slit . A structural member and a wooden member symmetrically attached to both sides of the web in the axial direction end of the structural steel, and the end in the axial direction of the wooden member is the end in the axial direction of the structural steel A member joining method comprising: disposing a more projecting composite member on a side surface of a structural member; and joining the composite member in the material axial direction by a joining tool penetrating the wood member in the material axial direction. . 6. The method for joining members according to claim 5, wherein a slit along the material axis direction is provided at an end of the wooden member, and a shaped steel is fitted into the slit .

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