JP4315865B2 - Glulam and wood reinforcement structure - Google Patents

Description

  The present invention relates to a technique for a reinforcing structure in the vicinity of a through hole provided in a beam, a column, or a base, particularly when a laminated material, wood, or the like is used as a beam, a column, or a base.

  With the recent development of large laminated timber, it has become possible to construct large wooden buildings, and the use of laminated timber as a beam member has become popular. And in the wooden frame construction method using such a large laminated material, wiring and piping of interior equipment are often installed by providing a through hole in the beam. This is because in the case of a beam composed of a large laminated material, it is difficult to pass equipment wiring and piping under the beam.

However, when a through-hole is formed in a beam, there is a concern about deformation or fracture near the opening due to a bending load due to a cross-sectional defect. For this reason, if it is necessary for a housing manufacturer or the like to form a large through hole that causes a cross-sectional defect of 1/3 or more of the beam for design reasons, etc., screw the steel plate to the side of the beam. Reinforces and prevents strength reduction near the through hole. At present, the mechanical strength reduction due to cross-sectional defects is compensated for by inserting a steel pipe into the through hole, and the laminated lumber around the opening is tightened and reinforced, so that mechanical materials such as laminated wood by drilling the through hole are used. A technique for preventing a decrease in strength is also known (see, for example, Patent Document 1).
JP-A-8-209856

  However, if the steel plate is reinforced by screwing it to the side of the beam, the fiber of the beam will be cut by screwing, which is a demerit in strength, and if the steel plate reinforcement alone does not form a through hole It was not possible to reinforce to the same strength or better. Further, when a steel pipe 101 is simply inserted into the through hole 3a and bonded with an adhesive, when the bending stress in the axial direction of the through hole 3a acts on the beam 3 (see FIG. 12), the steel pipe 101 is deformed. Although resistance to fracture occurs, when bending stress in a direction perpendicular to the axis of the through-hole 3a is applied (see FIG. 13), the resistance to deformation or fracture is not so much. In addition, as in Patent Document 1, when a plurality of protrusions are provided on the outer periphery of a steel pipe that fits into the through hole, the protrusions obstruct the fitting of the steel pipe into the through hole. Even if it can be inserted, the protrusion and the inner periphery of the through hole are rubbed, and a thin groove due to the protrusion is formed in the rubbed portion of the inner periphery of the through hole (the portion through which the protrusion has passed). As a result, the fiber of the beam I was cut off. In other words, it takes a lot of construction work, and also the comfort is poor, and interference with other members occurs.

  The problems to be solved by the present invention are as described above. Next, means for solving the problems will be described.

  In Claim 1, it is a reinforcement structure which inserts a steel pipe in a laminated hole of wood or wood, and a rib extending in the axial direction of the steel pipe is erected in the normal direction of the steel pipe on the outer periphery of the steel pipe, It is inserted into the through hole.

  In Claim 2, it is a reinforcement structure which inserts a steel pipe in the through-hole of a laminated material or wood, Comprising: This steel pipe is formed so that a cross section may become a substantially oval shape, and it extends in the axial direction of this steel pipe in this steel pipe Thus, a partition made of the same material as the steel pipe or a material stronger than the laminated material or wood is provided.

According to a third aspect of the present invention, there is provided a reinforcing structure in which a steel pipe is inserted into a laminated hole of wood or wood, and a screw hole is formed in a side wall of the steel pipe at a substantially central portion in the axial direction of the steel pipe. The steel pipe is inserted into the through hole, and a threaded pipe or a threaded rod is inserted into the steel pipe from the outside of the laminated material or wood toward the steel pipe in the normal direction of the steel pipe. The screw part is tightened with a nut .

  As effects of the present invention, the following effects can be obtained.

  In claim 1, not only when the bending stress in the axial direction of the through hole acts on the beam, but also when the bending stress in the direction perpendicular to the axis of the through hole acts, Serves as resistance to breakage. Moreover, compared with the case where a protrusion etc. are provided in the outer peripheral part, the steel pipe can be smoothly inserted without damaging the inner periphery of the laminated hole or the through hole of the wood.

According to the second aspect, even when two or more wires and pipes are disposed through the beam, the work of forming a through hole or inserting a steel pipe can be performed in one place. That is, the construction time can be shortened.
Moreover, it can prevent that the place where intensity | strength fell like the space | intervals between through-holes arises on a laminated material or wood by providing a through-hole in two or more places. That is, no splitting occurs between the through holes, and there is no need to limit the distance between the through holes.

In Claim 3, it can prevent that a steel pipe falls out from a laminated material or a timber, without using an adhesive agent etc. Moreover, it can be set as the strong anti-slip | slip of the circumferential direction between a laminated material or a timber, and a steel pipe, without using an adhesive agent etc. Above all, it is possible to refrain from using an adhesive containing a harmful substance such as formaldehyde, which has recently been regarded as a problem.

  Next, embodiments of the invention will be described.

  FIG. 1 is a perspective view of a laminated steel reinforcing steel pipe 1 according to an embodiment of the present invention, FIG. 2 is a plan sectional view of the laminated wood and a wood beam 3 with the reinforcing steel pipe 1 inserted therein, and FIG. FIG.

  FIG. 4 is a table showing a comparison of the bending performance and the shear performance in the vicinity of the through hole 3a depending on the presence or absence of the ribs 2.

FIG. 5 is a perspective view showing a second embodiment of the reinforcing steel pipe 11, FIG. 6 is a perspective view showing another embodiment of the reinforcing steel pipe 11, and FIG. 7 is a perspective view showing another embodiment of the reinforcing steel pipe 11. FIG. 8 is a perspective view showing a configuration example of the reinforcing steel pipe 21, and FIG. 9 is a perspective view showing another configuration example of the reinforcing steel pipe 31.

FIG. 10 is a perspective view showing a third embodiment of the reinforcing structure, FIG. 11 is a front view of the same, FIG. 12 is a partial plan sectional view of a laminated material or a wooden beam 3 into which a conventional steel pipe is inserted, and FIG. It is also a front view.

  First, with reference to FIGS. 1 and 2, a first embodiment relating to a reinforcing structure of a laminated hole or a through hole 3a of a wood beam 3 will be described. The laminated material or the wood beam 3 is formed by bonding a plurality of thin plates made of wood, for example. Of the laminated timber and timber beams 3 used in buildings such as houses, in the case of relatively large timber and timber beams 3, when creating the timber and timber beams 3 in factories, A through hole 3a is formed at a location through which the wiring and piping of the interior equipment are penetrated. And the steel pipe 1 is inserted in the said through-hole 3a. When the through hole 3a and the steel pipe 1 are fitted into the through hole 3a, the adhesive is applied to the inner periphery of the through hole 3a and the outer periphery of the steel pipe 1, and the steel pipe 1 rotates in the through hole 3a. Or the steel pipe 1 is firmly fixed so as not to come out of the through hole 3a.

  As shown in FIG. 1, the steel pipe 1 is provided with ribs 2 extending in the axial direction of the steel pipe 1 and standing in the normal direction on the outer peripheral portion. That is, a plurality of plate-like ribs 2, 2... Project radially from the outer periphery of the steel pipe 1 in the radial direction. The rib 2 may be fixed to the steel pipe 1 by welding or may be fixed by an adhesive. 1 and 3, four ribs 2 are fixed to the outer periphery of the steel pipe 1. However, the number of ribs 2 is not limited to four, and a plurality of ribs 2, such as two or three, may be fixed. good. On the other hand, the laminated material or the wood beam 3 is provided with not only the through hole 3a into which the steel pipe 1 is inserted, but also a groove into which the rib 2 can be inserted into the inner peripheral portion of the through hole 3a. In this embodiment, the steel pipe 1 is made of steel, but it may be a cylindrical reinforcing fiber, reinforced plastic or reinforced resin, and is not limited to steel.

  In this way, the steel pipe 1 is inserted into the through hole 3a of the laminated wood or the beam 3 of the wood, and the rib 2 extending in the axial direction of the steel pipe 1 is formed on the outer periphery of the steel pipe 1 with the normal line of the steel pipe 1 Since the steel pipe 1 erected in the direction is inserted into the through-hole 3a, not only when bending stress in the axial direction of the through-hole 3a acts on the beam 3 (see FIG. 2), but also the axis of the through-hole 3a Even when bending stress in a perpendicular direction is applied (see FIG. 3), the inserted steel pipe 1 plays a role of resistance to deformation or fracture. In addition, the steel pipe 1 can be smoothly inserted into the laminated material or the wood beam 3 as compared with the case where protrusions are provided on the outer peripheral portion.

  For reference, the effect of the present embodiment will be described with reference to the calculation result of FIG. Specification 1 is a conventional steel pipe, specification 2 is a steel pipe 1 with ribs 2 erected, and specification 3 is a steel pipe 1 with long ribs 2 erected in the radial direction of the steel pipe 1. As shown in FIG. 4, as for the bending performance, the performance is improved as compared with the case without the through hole just by inserting the conventional steel pipe as in the specification 1, but the conventional steel pipe is inserted for the shear performance. If it is only, performance will fall rather than the case without a through-hole. When the steel pipe 1 in which the rib 2 of this embodiment is erected is fitted into the through hole 3a, the bending performance is further improved, and the shear performance is improved as compared with the case without the through hole. However, since the rib 2 cuts the fiber such as the beam 3, the length of the rib 2 in the radial direction of the steel pipe 1 is a square in which the rib 2 is in contact with the steel pipe 1 as shown in the specification 2 (dotted line in FIG. 4). It is preferable that the configuration is such that it does not come out from the display.

  Next, referring to FIG. 5, a second embodiment relating to the laminated structure and the reinforcing structure of wood will be described. This technique is used when a wire 3 made of laminated wood or wood is passed through wiring or piping of two or more interior facilities. First, a through-hole having a substantially oval cross section is formed at a location on the beam 3 where wiring and piping are to be passed. Then, a steel pipe 11 having a substantially oval cross section is inserted into the through hole. As shown in FIG. 5, the steel pipe 11 is provided with a partition 12 inside the steel pipe 11 at a substantially central portion in the left-right direction when viewed from the front. The partition 12 is fixed so as to extend in the axial direction of the steel pipe 11. The partition 12 may be fixed by welding, or may be fixed using an adhesive. As described above, when the constructed laminated wood or the wooden beam 3 is shipped from the factory and a house or the like is built at the construction site, the wiring and piping are passed one by one on the left and right with the partition 12 in between. .

  As another embodiment of the partition 12, as shown in FIG. 6, there is a method in which two steel pipes 13 each having a substantially circular cross section are inserted into a steel pipe 11 having an oval cross section. In this case, it is preferable that the outer circumferences of the steel pipes 13 and 13 are arranged so as to contact each other. Then, when the steel pipes 13 and 13 are fitted and shipped from the factory, and a house or the like is constructed at the construction site, the wires and pipes are passed through the steel pipes 13 and 13 one by one. Compared with the case where the plate-shaped partition 12 is provided, by using the tubular steel pipe 13 as a partition, the material used for the partition (steel pipe) 13 is increased, but rattling of wiring and piping is prevented. Can do. In addition, compared with the case where the plate-like partition 12 is provided, the strength of the steel pipe 11 in the vertical direction in the front view is reduced, but the strength in the horizontal direction in the front view can be increased.

  Further, the partition 12 and the tubular steel pipe partition 13 can be combined. As shown in FIG. 7, first, a partition 14 is provided in the center of the oval-shaped steel pipe 11 at a substantially central portion in the left-right direction when viewed from the front. Shaped steel pipes 15 and 15 are inserted. In this case, in the steel pipe 11, it is suitable to arrange | position so that the partition 14 and the partition 15 * 15 of a steel pipe may touch. When the partition 14 is fixed and shipped from the factory with the steel pipes 15 and 15 inserted, when building a house or the like at the construction site, the wires and pipes are passed through the steel pipes 15 and 15 one by one. Compared with the case where only the plate-like partition 12 is provided or the case where only the tubular steel pipe 13 is used as a partition, the material to be used is increased, but the strength of the steel pipe 11 in the vertical direction in the front view and the horizontal direction in the front view is increased. Both strengths can be improved.

  In this way, the steel pipe 11 is formed to have a substantially oval cross section in a reinforcing structure in which a steel pipe is inserted into the through hole of the laminated material or the beam 3 of the wood, and the steel pipe 11 is formed in the steel pipe 11. Since the partitions 12, 13, 14, and 15 made of the same material as the steel pipe 11 or stronger than the laminated material or wood are provided so as to extend in the axial direction, two or more wires and pipes penetrate the beam 3. Even in the case of disposing, the work of forming the through hole or fitting the steel pipe 11 can be performed at one place. That is, the construction time can be shortened. Further, by providing the through holes 3a at two or more locations, it is possible to prevent a place where the strength is reduced between the through holes 3a and 3a on the laminated material or the wood beam 3. That is, no splitting occurs between the through holes 3a and 3a, and it is not necessary to limit the distance between the through holes 3a and 3a.

Next, a configuration example relating to a laminated structure and a reinforcing structure of wood will be described with reference to FIG. As in the first embodiment, among the laminated timbers and timber beams 3 used in buildings such as houses, in the case of relatively large timbers and timber beams 3, the laminated timber is used in factories and the like. When the wood beam 3 is created, the through-hole 3a is formed at a location where the wiring and piping of the interior equipment are penetrated. And the two cylindrical steel pipes 21 and 21 are inserted from the both ends of the said through-hole 3a. As shown in FIG. 8, the two steel pipes are drawn at one end and are formed in a flange shape that swells outward. The length of the two steel pipes 21 and 21 in the axial direction is equal to the length of the two steel pipes 21 and 21 in the axial direction excluding the flange portion 21a. It is formed so as to be shorter than the length in the axial direction. Since it is more convenient for the two steel pipes 21 and 21 to have the same shape when manufactured at the factory, the length of the steel pipe 21 in the axial direction is not more than half the length of the through hole 3a in the axial direction. It is desirable to be.

When the through hole 3a and the steel pipe 21 are fitted into the through hole 3a, the adhesive is applied to the inner periphery of the through hole 3a and the outer periphery of the steel pipe 21, and the steel pipe 21 rotates in the through hole 3a. Or the steel pipe 21 is firmly fixed so as not to come out of the through hole 3a. As described above, the steel pipes 21 and 21 are configured such that the steel pipes 21 and 21 in which the flange portion 21a is formed in advance in a factory or the like are inserted into the through holes 3a of the beam 3, but as another configuration example, FIG. As described above, the steel pipe 31 that is slightly longer than the axial length of the through-hole 3a is first inserted into the beam 3, and then the both ends of the steel pipe 31 are expanded to form the flange portions 31a and 31a. Such a configuration may be adopted.

  Moreover, it is good also as a structure which provides a ring-shaped reinforcement part 21a * 31a in the edge part of the steel pipe 21 * 21 instead of making a flange part in the edge part of the steel pipe 21 * 21. In this case, as described above, the reinforcing portions 21a are fixed to the end portions of the two steel pipes 21 and 21 in advance by welding or caulking, and the steel tubes 21 and 21 to which the reinforcing portions 21a are fixed are inserted into the through holes. It is good also as a structure inserted in 3a, and after inserting the steel pipe 31 in the through-hole 3a previously, you may fix the ring-shaped reinforcement part 31a to the both ends of the steel pipe 31 by welding or caulking.

  In this way, the steel pipes 21 and 31 are inserted into the through holes 3a of the laminated material or the wood beam 3, and the ring-shaped flange portions 21a and 31a are formed at one end or both ends of the steel pipes 21 and 31. Therefore, the strength of the flange portions 21a and 31a is improved, and the strength of the steel pipes 21 and 31 themselves is improved. In particular, the strength against compression, tension, and shear in a direction perpendicular to the axial direction of the steel pipes 21 and 31 is improved, and as a result, the laminated pipes and the steel beams 21 of the wood beams 3 in which the steel pipes 21 and 31 are inserted are improved. The strength against compression, tension and bending in a direction perpendicular to the axial direction of 31 is improved. In addition, since it is only necessary to perform welding, drawing, caulking, or the like, the strength can be improved with a very simple work process. Compared with the method in which a steel plate or the like is provided at the ends of the steel pipes 21 and 31, and the steel plate is struck to the beam, the steel pipes 21 and 31 are reinforced without cutting the fiber, and as a result, the vicinity of the through hole 3a of the beam 3 The strength of can be improved.

  In addition, the steel pipes 21 and 31 are inserted into the through-holes 3a of the laminated wood and the beam 3 of the wood, and the ring-shaped reinforcing parts 21a and 31a are provided at one or both ends of the steel pipes 21 and 31, The strength in the vicinity of the reinforcing portions 21a and 31a on the ring is improved, and the strength of the steel pipes 21 and 31 themselves is improved. In particular, the strength against compression, tension, bending and shear in a direction perpendicular to the axial direction of the steel pipes 21 and 21 is improved. As a result, the steel pipe of the laminated material and the wood beam 3 into which the steel pipes 21 and 31 are inserted Strength against compression, tension, bending, and shear in a direction perpendicular to the axial direction of 21 and 31 is improved. Compared with the method in which a steel plate or the like is provided at the ends of the steel pipes 21 and 31, and the steel plate is struck to the beam, the steel pipes 21 and 31 are reinforced without cutting the fiber, and as a result, the vicinity of the through hole 3a of the beam 3 The strength of can be improved.

First, with reference to FIG. 10, a third embodiment relating to the reinforcing structure of the laminated wood or the wooden beam 3 will be described. Of the laminated timber and timber beams 3 used in buildings such as houses, in the case of relatively large timber and timber beams 3, when creating the timber and timber beams 3 in factories, A through hole 3a is formed at a location through which the wiring and piping of the interior equipment are penetrated. And the steel pipe 41 is inserted in the said through-hole 3a. As shown in FIG. 10, the steel pipe 41 is provided with a screw hole 41a at a substantially central portion in the axial direction of the outer peripheral (outer wall) portion, and screws or the like penetrate from the inside to the outside of the steel pipe 41 or from the outside to the inside. It is configured to be able to.

  After inserting the steel pipe 41 into the through hole 3a, as shown in FIGS. 10 and 11, a pipe hole 3b is formed on the upper surface or the lower surface corresponding to the central portion in the axial direction of the through hole 3a from the outside of the beam. After inserting the steel pipe 41 into the through hole 3a, the threaded hoso pipe 42 is inserted into the pipe hole 3b. Here, the threaded hoso-pipe 42 is formed such that one is a pipe part 42c and the other is a screw part 42a. The diameter of the screw hole 41a is larger than the diameter of the screw portion 42a and smaller than the diameter of the pipe portion 42c. The threaded hoso-pipe 42 passes through the front screw hole 41 a and is inserted until the screw portion 42 a reaches the wall surface of the steel pipe 41. And inside the steel pipe 41, the nut 43 is fastened to the screw part 42a, and the threaded hoso pipe 42 is fixed.

  As described above, the threaded hoso-pipe 42 is fixed by passing through the pipe hole 3b of the beam 3 and the screw hole 41a of the steel pipe 41, so that the steel pipe 41 moves in the through hole 3a in the axial direction of the steel pipe 41. The steel pipe 41 is prevented from rotating around the axis while preventing the 41 from falling out of the through hole 3a. At this time, the threaded hoso-pipe 42 is stopped in a state where a pin hole 42b described later faces a drift pin hole 3c described later.

  The threaded hoso-pipe 42 is provided with a plurality of pin holes 42b and 42b on the side, and the drift pin holes 3c and 3c are formed in the beam 3 from the front or rear surface of the beam 3 toward the pipe hole 3b. Has been. Then, the pin hole 42b of the threaded hoso pipe 42 is stopped so as to face the drift pin hole 3c, and the drift pins 44 and 44 are passed through the drift pin holes 3c and 3c so as to reach the threaded hoso pipe 42. To. The threaded pipe 42 to be fitted into the through hole 3a of the beam 3 is not limited to a pipe shape, and the pipe portion 42c may be a rod-like rod portion whose inside is not hollow, or a polygonal column instead of a columnar shape. It may be a pipe part or a bar part having a shape. The drift pin 44 is not limited to the one that stops inside the pipe portion 42c or the rod portion, but may be formed to have a length that penetrates the pipe portion 42c or the rod portion and penetrates the beam 3 itself. Further, the threaded hoso-pipe 42 may be configured so as to also serve as a hoso-pipe for fixing the column portion.

  In this way, the steel pipe 41 is inserted into the through hole 3a of the laminated wood or the beam 3 of the wood, and the screw hole 41a is opened in the side wall of the steel pipe 41 at the substantially central portion in the axial direction of the steel pipe 41. The steel pipe 41 is fitted into the through-hole 3a, and a threaded pipe 42 or a threaded rod is attached to the threaded portion 41b from the outside of the laminated material or the wood beam 3 toward the steel pipe 41 in the normal direction of the steel pipe 41. Is inserted so as to reach the inside of the steel pipe 21, and the screw portion 42a is tightened with the nut 43 in the steel pipe 21, so that the steel pipe 41 is prevented from coming off from the laminated material or the wood beam 3 without using an adhesive or the like. it can. Moreover, it can be set as the strong anti-slip | slip of the circumferential direction between the laminated material, the beam 3 of wood, and the steel pipe 41, without using an adhesive agent etc. Above all, it is possible to refrain from using an adhesive containing a harmful substance such as formaldehyde, which has recently been regarded as a problem.

Although the present invention has been described with three embodiments , the reinforcing structure of the present invention is not limited to the laminated wood and the wooden beam 3, but is a reinforced concrete column for injecting concrete, a building such as a house. It can also be used for wiring and piping through wall surfaces, wooden pillars and foundations.

The perspective view of the steel pipe 1 for laminated material reinforcement which concerns on one Example of this invention. FIG. 3 is a plan cross-sectional view of a laminated material or a wood beam 3 in a state in which a reinforcing steel pipe 1 is inserted. Similarly front view. The table | surface which shows the comparison by the presence or absence of the rib 2 about bending performance and shear performance. The perspective view which shows the 2nd Example of the steel pipe 11 for reinforcement. The perspective view which shows another Example of the steel pipe 11 for reinforcement. The perspective view which shows another Example of the steel pipe 11 for reinforcement. The perspective view which shows the 1st structural example of the steel pipe 21 for reinforcement. The perspective view which shows another structural example of the steel pipe 31 for reinforcement. The perspective view which shows the 3rd Example of a reinforcement structure. Similarly front view. The partial cross-sectional view of the laminated material and the wooden beam 3 which inserted the conventional steel pipe 1. FIG. Similarly front view.

1 Steel pipe 2 Rib 3 Beam (glued wood)
3a Through-hole 3b Pipe hole 3c Drift pin hole 12 Partition 13 Steel pipe 14 Partition 15 Steel pipe 21 Steel pipe 21a Flange part (reinforcement part)
31 Steel pipe 31a Flange part (reinforcement part)
41 Steel pipe 41a Bolt hole 42 Threaded hoso pipe 42a Screw part 42b Pin hole 42c Pipe part 43 Nut 44 Drift pin

Claims (3)

It is a reinforcing structure that inserts a steel pipe into the laminated hole of wood or wood,
A rib extending in the axial direction of the steel pipe is erected on the outer circumference of the steel pipe in the normal direction of the steel pipe,
A laminated structure of wood or wood, which is fitted into the through hole. It is a reinforcing structure that inserts a steel pipe into the laminated hole of wood or wood,
The steel pipe is formed so that the cross section has a substantially oval shape,
A laminated structure of wood or wood, wherein a partition made of the same material as the steel pipe or a material stronger than the laminated wood or wood is provided in the steel pipe so as to extend in the axial direction of the steel pipe. It is a reinforcing structure that inserts a steel pipe into the laminated hole of wood or wood,
A screw hole is opened in the side wall of the steel pipe at a substantially central portion in the axial direction of the steel pipe,
The steel pipe is inserted into the through hole,
Inserting a threaded pipe or a threaded rod into the steel pipe from the outside of the laminated wood or wood toward the steel pipe on the normal direction of the steel pipe,
A laminated structure of wood or wood , wherein the screw portion is tightened with a nut in the steel pipe .

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