JP2015140600A - Residual deformation suppression structure of framework joining part - Google Patents

Abstract

PROBLEM TO BE SOLVED: To suppress the residual deformation of a joining part in a framework of a building by a small number of constituents and an easy construction method.SOLUTION: A residual deformation suppression structure 10 comprises resilience force impartment means 15 which imparts a restoration force in a direction in which a horizontal material 12 and a column 11 approximate each other when an external force acts in a direction in which the horizontal material is separated from the column, and accommodation means 16 which accommodates the restoration force impartment means 15 into the column 11 and the horizontal material 12. The restoration force impartment means 15 comprises a joining member 21 which joins the column 11 and the horizontal material 12 to each other, and a coil spring 23 which is attached to the joining member 21, and restores a joining part C to an original joining state when there occurs deformation in the separation direction. The accommodation means 16 is formed so that the joining member 21 can be bridged between the column 11 and the horizontal material 12, and arranged so as to be accessible to the joining member 21 from the outside of the column 11 and the horizontal material 12 in a state that the restoration force impartment means 15 is accommodated.

Description

  The present invention relates to a structure for suppressing residual deformation of a shaft joint, and more particularly, in a shaft structure of a building that can suppress residual deformation of a joint between two members orthogonal to each other. The present invention relates to a residual deformation suppressing structure.

  In recent years, as a result of the enactment of laws on ensuring the quality of houses and the establishment of long-term excellent housing systems, general wooden low-rise houses have been required to have quality assurance for 75 to 90 years as their energy-saving performance and structural strength performance. However, one of the factors hindering such long-term quality assurance is the effect of earthquake motion. For example, in the case where an excessive residual deformation occurs in a building due to an earthquake, it not only gives a sense of uneasiness to the residents, but the tarpaulin stretched on the shaft assembly is damaged, the shaft assembly and the insulation As a result, moisture enters the inside of the wall and condensation occurs inside the wall, deteriorating the quality of the building.

  By the way, Patent Document 1 discloses a joint structure with a damping function that restricts deformation of a joint portion between a beam member and a beam member. In order to enhance the vibration control function of the building, this joint structure with a vibration control function is engaged with a metal pipe member in which a coil spring and a mounting plate are respectively provided, and a screw hole formed in the mounting plate. In this structure, a joining device including a bolt member to be attached and a pin member for attaching the pipe member to the beam portion is attached to the joining portion. That is, first, the pipe member is accommodated in the insertion hole formed in the beam material, and is fixed to the beam material by the pin member so as to be slidable within a certain range in the insertion hole. Next, the bolt member which penetrated the beam member is engaged with the screw hole of the mounting plate accommodated in the pipe member, and the beam member and the beam member are joined in a state where the coil spring is compressed. According to this structure, even if an external force that separates the beam member and the beam member due to a lateral vibration caused by an earthquake or the like acts on the joint, the beam member and the beam member are brought close to each other by the elasticity of the coil spring. Can lead to direction.

JP 2009-197490 A

  However, the structure of Patent Document 1 has the following problems. That is, first, when constructing a building, a process for embedding a metal pipe member in the beam material is separately required, and not only complicated work is required, but in the case of a wooden frame structure, a wooden beam material is used. Since metal pipe members are embedded, dew condensation is likely to occur at the contact portions, and the occurrence of the dew condensation becomes a factor that hinders long-term quality assurance of buildings. In addition, if one set of the joining devices is used for one place of the joint portion, the residual deformation in the direction in which the beam member twists and rotates with respect to the girders cannot be suppressed, and the residual in the rotation direction remains. In order to restrict the deformation, a plurality of sets of joining devices are required per joining portion, and not only the attaching operation of the joining device becomes more complicated, but also the above-described dew condensation generation area is further expanded. . Further, in the above structure, a pin member is required when the pipe member is attached to the beam member, and the pin member is disposed so as to protrude through the beam member in a direction intersecting with the extending direction of the beam member. . For this reason, the degree of freedom in design of the building is impaired, and there is a possibility that the pin member may interfere with other members due to an external force such as an earthquake, resulting in breakage or dropout. It becomes movable with respect to the member, and the above-described vibration damping function by the coil spring is not effective.

  The present invention has been devised by paying attention to such inconveniences, and the object of the present invention is to suppress the residual deformation of the joints in the building frame by a simple construction with a small number of components, and the long term of the building. An object of the present invention is to provide a residual deformation suppressing structure for a shaft joint that can contribute to quality assurance.

  In order to achieve the above object, the present invention is mainly applied to a building shaft and the residual deformation suppressing structure of the shaft joint that suppresses the residual deformation of the joint of the first and second members orthogonal to each other. And when an external force is applied to the first member in a direction in which the second member is separated, a restoring force in a direction in which the second member approaches the first member. A restoring force applying means for applying, and an accommodating means for accommodating the restoring force applying means in the first and second members, wherein the restoring force applying means comprises the first and second members. And when the first member and the second member are displaced in a direction in which the second member is separated from the first member, the first member and the second member are returned to the original members. An elastic member that is elastically deformed so as to be restored to a joined state, Is constituted by first and second holes respectively formed in the first and second members so that the joining member can be spanned between the first and second members. Each of the second hole portions is accessible to the joining member from the outside of the first and second members in a state where the restoring force applying means is accommodated in the first and second members. It is configured to be provided.

  According to the present invention, when the first and second members are joined, the joining member is spanned inside each of the first and second members, and the work of attaching and fixing the elastic member to the joining member is performed first. It can be performed from the outside of the first and second members, and the restoring force applying means can be attached to the first and second members without projecting other members from the first and second members. . Therefore, the components for suppressing the residual deformation of the joint portion can be minimized, and the residual deformation of the joint portion in the building framework can be more reliably suppressed by simple construction. Thereby, generation | occurrence | production of the dew condensation inside a building resulting from a deformation | transformation of a frame joint part by an earthquake etc. can be suppressed, and it can contribute to the long-term quality assurance of a building. In addition, since it is not necessary to embed a metal pipe in the first or second member as in the structure of the cited document 1, it is possible to suppress the occurrence of condensation around the restoring force applying means. In addition, when a rotation restricting means is provided, the relative rotation of the first and second members due to an external force such as an earthquake can be restricted with one joining member, and the number of metal members detained in the shaft assembly The occurrence of dew condensation due to the contact between the metal member and the wooden frame can be suppressed.

The schematic front view of the shaft set with which the residual deformation | transformation suppression structure which concerns on this embodiment was applied. (A) is the partial expanded sectional front view in the junction part of the A section of FIG. 1, (B) is the partial expanded sectional side view in the junction part of the direction in alignment with the AA of (A). FIG. 3 is a partially exploded cross-sectional view of FIG. The partial expansion perspective view which looked at the junction part of the shaft set in the state where the restoring force provision means is not attached from the bottom.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 is a schematic front view of a shaft group to which the residual deformation suppressing structure for a shaft group joint portion according to this embodiment is applied. 2A shows a partially enlarged cross-sectional front view of the joint portion A in FIG. 1, and FIG. 2B shows the joint portion in the direction along the line AA in FIG. FIG. 3 is a partially exploded view of FIG. 2 (A). In these drawings, the residual deformation suppressing structure 10 is applied to a joint C between two members orthogonal to each other in a wooden frame J in order to suppress the residual deformation of a wooden building. In addition, it is provided between a pillar 11 (first member) extending in the vertical direction and a horizontal member 12 (second member) such as a lintel or window stand extending in the horizontal direction.

  As shown in FIGS. 2A and 3, the residual deformation suppressing structure 10 includes a rotation restricting means 14 that restricts relative rotation of the column 11 and the horizontal member 12, and the horizontal member 12 with respect to the column 11. When an external force is applied in a direction in which the column member 11 is separated, a restoring force applying unit 15 that applies a restoring force in a direction in which the horizontal member 12 approaches the column 11, and a restoring force inside the column 11 and the horizontal member 12 It is comprised by the accommodating means 16 for accommodating the provision means 15. FIG.

  As shown in FIGS. 2 and 3, the rotation restricting means 14 is provided on the mortise 18 as a recess provided on the column 11 side of the joint C, and on the horizontal member 12 side of the joint C. It is comprised by the tenon 19 as a convex part engage | inserted by the tenon hole 18. FIG. The mortise 18 is a square hole in the shape of a groove that opens to the joint surface 11A side of the column 11 facing the horizontal member 12 side. On the other hand, the tenon 19 is formed on the joint surface 12A of the horizontal member 12 facing the column 11 side, and has a prismatic shape of a size that fits almost exactly in the tenon hole 18. Contrary to the above, the tenon 19 may be provided on the column 11 side and the tenon hole 18 may be provided on the horizontal member 12 side.

  The restoring force applying means 15 is attached to the joining member 21 that joins the column 11 and the horizontal member 12, and when the displacement in the direction in which the horizontal member 12 is separated from the column 11 occurs. Further, a coil spring 23 is provided as an elastic member that is elastically deformed so as to restore the column 11 and the horizontal member 12 to the original joined state.

  The joint member 21 includes a bolt 25 having a thread groove on a tip end side, a nut 27 having a screw hole engageable with the thread groove, and a first and a second portion provided so as to be inserted through a shaft portion 25A of the bolt 25. A second washer 29, 30 is provided. In addition, the thing of the length which can span between each inside of the pillar 11 and the horizontal member 12 is used for the volt | bolt 25 with the axial part 25A.

  The coil spring 23 is inserted into the shaft portion 25A of the bolt 25 and is interposed between the nut 27 and the second washer 30 disposed on the nut 27 side. It should be noted that another elastic member made of a rubber body or the like can be substituted for or used in combination with the coil spring 23 as long as the same action as described below can be achieved. The coil spring 23 may be integrated with the second washer 30 by welding or the like.

  As shown mainly in FIGS. 3 and 4, the accommodating means 16 is formed on the column 11 side and the horizontal member 12 side so that bolts 25 can be spanned between the insides of the column 11 and the horizontal member 12. The first and second holes 32 and 33 are configured. The first and second hole portions 32 and 33 are provided so that the joining member 21 can be accessed from the outside of the hole in a state where the restoring force applying means 15 is accommodated in each of the pillar 11 and the horizontal member 12. It has been.

  The first hole portion 32 on the column 11 side is a stepped through hole formed so as to penetrate from the outer surface 11B on the opposite side of the joint surface 11A toward the mortise 18 and is on the opposite surface 11B side. A large-diameter hole 35 that is open to the inside, and a small-diameter hole 36 that has a smaller inner diameter than the large-diameter hole 35 and communicates between the large-diameter hole 35 and the mortise 18.

  The large-diameter hole 25 is provided in a size and shape that can be accommodated therein so that the head 25B and the first washer 29 of the bolt 25 are not exposed from the outer surface 11B. On the other hand, the small-diameter hole 36 has an inner diameter substantially the same as or slightly larger than the shaft portion 25A of the bolt 25, and only the shaft portion 25A can be inserted without passing through the head portion 25B and the first washer 29. It has become.

  The second hole 33 on the side of the horizontal member 12 is opened on the end face side of the tenon 19, and a bolt insertion hole 38 (insertion hole) through which the shaft portion 25A of the bolt 25 penetrating the small diameter hole 36 of the column 11 is inserted. And an access hole 39 formed so that an operator can access the bolt 27 from the outside when the nut 27 is fastened to the bolt 25.

  The bolt insertion hole 38 is formed at a position opposite to the small diameter hole 36 of the column 11 in the joined state of the column 11 and the horizontal member 12 and has the same inner diameter as the small diameter hole 36, Only the shaft portion 25A of the bolt 25 can be inserted without passing through the coil spring 23 and the nut 27.

  The access hole 39 is provided in the shape of a square hole formed with an open portion 39A that opens only on the lower surface 12B of the horizontal member 12, and as shown in FIG. The front end side portion (thread groove portion) of the shaft portion 25A of the protruding bolt 25, the second washer 30, the coil spring 23, and the nut 27 can be accommodated. Further, the access hole 39 is provided in such a size that a predetermined gap is formed between the tip of the shaft portion 25A and the hole forming edge 39B in the attached state of the restoring force applying means 15 shown in FIG. Yes. The access hole 39 may be formed with an open portion 39 </ b> A on one side of the horizontal member 12 such as the upper surface side or the side surface side, instead of opening the lower surface 12 </ b> B side of the horizontal member 12.

  Next, a method for attaching the restoring force applying means 15 to the column 11 and the horizontal member 12 will be described.

  First, the tenon 19 of the horizontal member 12 is fitted into the tenon 18 of the column 11. Thereafter, the bolt 25 in a state where the first washer 29 is inserted is inserted into the first and second holes 32 and 33 from the outer surface 11B side of the column 11. At this time, the first washer 29 is in contact with the bottom surface of the large-diameter hole 35, and the head 25 </ b> B of the bolt 25 is accommodated in the large-diameter hole 35 in contact with the first washer 29. Is done. On the other hand, the shaft portion 25 </ b> A of the bolt 25 passes through the small-diameter hole 36 and the bolt insertion hole 38, and the tip end portion projects into the internal space of the access hole 39. In this state, the operator puts a hand into the open portion 39A of the access hole 39, and the second washer 30, the coil spring 23, and the nut 27 are inserted in this order from the distal end side of the shaft portion 25A of the bolt 25, and the shaft portion The screw groove on the tip side of 25A and the screw hole of the nut 27 are engaged. Then, the nut 27 is tightened so that the coil spring 23 is compressed, and the joining work between the column 11 and the horizontal member 12 is completed.

  According to the residual deformation suppressing structure 10 described above, when an external force is applied in the direction in which the horizontal member 12 is separated from the column 11 at the joint C between the column 11 and the horizontal member 12 due to the occurrence of an earthquake, the nut 27, the coil spring 23 interposed between the second washer 30 and the second washer 30 is further compressed, and the restoring force in the direction in which the horizontal member 12 approaches the column 11 by the restoring action of the coil spring 23 at that time. Can be imparted to the joint C. Further, even when the first washer 29 is sunk into the column 11 due to the earthquake, the coil spring 23 extends from the original state so that no gap is generated between the column 11 and the horizontal member 12. Can be maintained.

  In the above-described embodiment, the case where the present invention is applied to the joint C between the column 11 and the horizontal member 12 is illustrated and described. However, the present invention is not limited thereto, and the building frame such as the joint between the beam and the beam. In the structure, it is possible to apply the present invention to any joint portion of two members orthogonal to each other.

  In addition, the configuration of each part of the apparatus in the present invention is not limited to the illustrated configuration example, and various modifications are possible as long as substantially the same operation is achieved.

10 Residual deformation suppression structure 11 Column (first member)
12 Horizontal member (second member)
14 Rotation restricting means 15 Restoring force applying means 16 Housing means 18 Mortise (concave)
19 Mortise (convex)
21 Joining member 23 Coil spring (elastic member)
32 1st hole part 33 2nd hole part 38 Bolt insertion hole (insertion hole)
39 Access hole C Joint J Shaft assembly

Claims (3)

A structure for suppressing residual deformation of a shaft joint that is applied to a building shaft and suppresses residual deformation of a joint of the first and second members orthogonal to each other,
When an external force is applied to the first member in a direction in which the second member is separated from the first member, a restoring force that applies a restoring force in a direction in which the second member approaches the first member. Providing means, and accommodation means for accommodating the restoring force application means in the first and second members,
The restoring force applying means is attached to the joining member that joins the first and second members, and the second member is displaced in a direction away from the first member. An elastic member that elastically deforms so that the first and second members are restored to their original joined state,
The accommodating means is configured by first and second holes formed in the first and second members, respectively, so that the joining member can be spanned between the first and second members.
The first and second hole portions are respectively connected to the joining member from the outside of the first and second members in a state where the restoring force applying means is accommodated inside the first and second members. A structure for suppressing residual deformation of a shaft joint portion, wherein the structure is provided so as to be accessible. The first hole portion is a through hole that penetrates the first member and accommodates a region of the joining member;
The second hole portion is an insertion hole in which one region of the bonding member is accommodated through the through-hole in the bonded state of the first and second members, and the bonding hole through the insertion hole. A region of the member and an access hole in which the elastic member is accommodated;
2. The access hole according to claim 1, wherein the access hole is opened outward from the outside of the second member so that the elastic member can be attached to a region of the joining member to fix the joining member. Residual deformation control structure of shaft joint. A rotation restricting means for restricting relative rotation of the first and second members;
The rotation restricting means includes a concave portion formed in one of the first and second members, and a convex portion formed in one of the first and second members and accommodated in the concave portion. Consists of
3. The residual deformation suppressing structure for a shaft joint part according to claim 1, wherein the concave portion and the convex portion are provided in a shape that fits in a relatively non-rotatable manner.

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