JP4797871B2 - Reinforced structure of wooden horizontal members - Google Patents

Description

  The present invention mainly relates to a reinforcing structure for a wooden horizontal member such as a beam or a base in a wooden building, and particularly relates to reinforcement around a through hole for inserting piping, wiring, and the like.

  In a wooden house, a through-hole for inserting piping, wiring, or the like of a water facility may be formed in a wooden horizontal member such as a beam or a base. When a through hole is formed in a horizontal member, the strength is reduced due to a cross-sectional defect. However, the strength evaluation method and reinforcement method for such a perforated horizontal member have not yet been fully established, and each is unique. It is the present situation that is dealing with.

  As one of the above-mentioned measures, for example, as disclosed in Patent Document 1 and Patent Document 2, there is a reinforcing structure in which a reinforcing plate is fastened with a large number of screws around the through holes on both side surfaces of the horizontal member. .

JP 2004-324125 A JP 2003-176601 A

  However, in the above-described reinforcing structure, a cross-sectional defect due to screwing of a large number of screws occurs around the through hole of the horizontal member, and it has been difficult to ensure sufficient strength performance.

  However, if the number of screws that secure the reinforcing plate is reduced as much as possible in order to reduce the cross-sectional defect of the horizontal member, bending stress and shear stress acting on the horizontal member can be efficiently transmitted to the reinforcing plate. It was not possible to secure sufficient strength performance.

  For this reason, in the case of using a perforated horizontal member, there is a problem that the structure planning becomes complicated because the structure planning must be performed in anticipation of a significant decrease in strength.

  Then, this invention aims at provision of the reinforcement structure of the wooden horizontal member which eliminates the said malfunction and can improve the strength performance of the wooden horizontal member which has a through-hole effectively.

  In order to solve the above problems, the present invention is a reinforcing structure of a wooden horizontal member 1 in which a through hole 3 is formed between opposing side surfaces 2 and 2, and includes both side surfaces 2 of the wooden horizontal member 1, 2, reinforcing plates 5 and 5 having a plurality of claws 9 are attached to each other, and both the reinforcing plates 5 and 5 and the wooden horizontal member 1 are sandwiched by sandwiching members 15 and 15. The claws 9... Of the two reinforcing plates 5 and 5 are made to bite into both side surfaces 2 and 2 of the wooden horizontal member 1.

  Specifically, the clamping member 15 includes a base piece 16 inserted through the through-hole 3, and extending pieces 17 extending from both ends of the base piece 16 so as to cover the reinforcing plates 5 and 5. 17 and pressing bolts 20... That are screwed into the extending pieces 17 and 17 to press the reinforcing plates 5 and 5 against both side surfaces 2 and 2 of the wooden horizontal member 1.

Further, flange portions 7 and 7 extending in a substantially horizontal direction are formed at the upper ends of the reinforcing plates 5 and 5, and the floor base materials 11 and 11 are supported by the flange portions 7 and 7.

Another invention is a reinforcing structure of a wooden horizontal member 1 in which a through hole 3 is formed between opposing side surfaces 2 and 2, and the through holes in both side surfaces 2 and 2 of the wooden horizontal member 1. 3, reinforcing plates 5 and 5 having a plurality of claws 9 are attached to each other, and the tensile force of the wooden horizontal member 1 is generated on both the reinforcing plates 5 and 5 and the wooden horizontal member 1. By passing through the through bolts 31 so as to avoid easy-to-do places, and tightening the nuts 34 screwed into the through bolts 31, the heads 33 of the through bolts 31,. The both reinforcing plates 5, 5 and the wooden horizontal member 1 are sandwiched by the nuts 34, and the claws 9,... Of both the reinforcing plates 5, 5 are attached to both side surfaces 2, 2 of the wooden horizontal member 1. Bite into the upper ends of the reinforcing plates 5 and 5 To form a flange portion 7, 7 extending in horizontal direction, characterized by being adapted to support the underfloor member 11, 11 by the flange portions 7.

Specifically, the claws 9 of the reinforcing plates 5 and 5 are formed by punching the necessary portions of the reinforcing plates 5 and 5, and a plurality of punched holes 10. Some of them and the plurality of bolt insertion holes 30 formed in the wooden horizontal member 1 are made to coincide with each other, and the through bolts 31 are passed through the punching holes 10 and the bolt insertion holes 30. To penetrate.

  In the reinforcing structure according to the present invention, the wooden horizontal member and the two reinforcing plates attached to both side surfaces are sandwiched between the clamping members, or are sandwiched between the heads of the through bolts and the nuts, so that the claws of both the reinforcing plates are horizontally mounted. These are integrated into the two sides of the material.

  As a result, the bending stress and shear stress acting on the horizontal member can be efficiently transmitted to the two reinforcing plates while reducing the cross-sectional defect of the horizontal member, compared to the case where many long screws are screwed in as in the past. These stresses can be surely borne by both reinforcing plates, and even though it is a perforated horizontal member with through holes, sufficient strength performance equivalent to that of a non-perforated horizontal member is ensured. Can do.

  Therefore, even if it is a perforated horizontal member, it can be handled in the same way as a non-perforated horizontal member. There is no need to review anything, and it is possible to eliminate the trouble that the structure plan becomes complicated by the facility plan.

  In addition, when using through bolts, it is necessary to form bolt insertion holes in the horizontal member, and there are some cross-sectional defects in the horizontal member compared to the case where only the claws of both reinforcing plates are bitten. Will increase. However, these bolt insertion holes are formed so as to avoid the location where the tensile force of the horizontal member is likely to be generated, so that the strength of the horizontal member is not reduced compared to the case where a large number of screws are screwed into an arbitrary portion. However, the cross-sectional defect | deletion of the horizontal member by formation of a bolt insertion hole can be suppressed to the required minimum.

  In addition, by using the holding member inserted in the through hole of the horizontal member, it is possible to prevent the holding member from overhanging from the outer surface of the horizontal member, and to join the horizontal member to other members or metal fittings. It is possible to prevent troubles in mounting.

  Furthermore, by penetrating the through bolt using the punched hole generated by punching the claw of the reinforcing plate, it is not necessary to separately process a dedicated hole for penetrating the through bolt into the reinforcing plate. The structure can be simplified.

  Furthermore, by using the flange portion of the reinforcing plate as a support base that supports the floor base material, the members can be shared, and the construction costs associated with floor construction can be reduced.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. 1 to 3 show a reinforcing structure of a wooden horizontal member 1 according to an embodiment of the present invention. The horizontal member 1 is used as a beam, a base, or the like in a wooden building, and is made of a laminated material having a substantially rectangular cross section in which a plurality of strip-like laminaes are stacked and joined together. In the horizontal member 1, a through hole 3 for piping or wiring insertion is formed substantially horizontally across the side surfaces 2 and 2 along the opposing longitudinal direction. The horizontal member 1 is not limited to the laminated material, and may be a solid material.

  Reinforcing plates 5 and 5 are bonded around the through holes 3 on both side surfaces 2 and 2 of the horizontal member 1 as shown in FIGS. As shown in FIG. 5, the reinforcing plate 5 includes a substantially rectangular vertical portion 6 and a flange portion 7 extending from the upper end of the vertical portion 6 in a substantially horizontal direction.

  A substantially circular opening 8 corresponding to the through hole 3 is formed in the approximate center of the vertical portion 6 of the reinforcing plate 5. In addition, a pair of short claws 9 and 9 are formed by punching, for example, at a total of eight locations on the peripheral edge of the vertical portion 6. Specifically, a pair of short claws 9, 9 are formed at each corner of the vertical portion 6, at the center of the upper and lower ends, and at the center of the left and right ends, respectively. In addition, substantially circular punching holes 10... Generated by the punching are formed at these eight portions of the vertical portion 6. Therefore, the reinforcing plates 5 and 5 on both sides are made to bite their short claws 9... Into the side surfaces 2 and 2 of the horizontal member 1 so that their openings 8 and 8 coincide with the through holes 3. The vertical portions 6 and 6 are attached to the horizontal member 1 so as to overlap the side surfaces 2 and 2 of the horizontal member 1.

  As shown in FIG. 3, the flange portion 7 of the reinforcing plate 5 functions as a support base that supports floor base materials such as ALC 11 and floor joists. In FIG. 3, reference numeral 12 denotes a floor board laid on the ALCs 11 and 11.

  Then, as shown in FIGS. 2 and 6, the reinforcing member 5, 5 attached to the horizontal member 1 and both side surfaces 2, 2 are sandwiched between a pair of sandwiching members 15, 15, and both reinforcing members are provided. The short claws 9... Of both reinforcing plates 5 and 5 are securely bited into both side surfaces 2 and 2 of the horizontal member 1 so that the plates 5 and 5 do not fall off.

  As shown in FIGS. 2 and 7, the clamping member 15 includes a substantially rectangular base piece 16 inserted through the through hole 3 of the horizontal member 1, and both reinforcing plates 5, 5 from both ends of the base piece 16. The U-shaped plate 18 is formed of substantially concave extending pieces 17 and 17 extending so as to cover the vertical portions 6 and 6 of the plate. A pair of bolt holes 19, 19 are formed in the extended pieces 17, 17 of the U-shaped plate 18, respectively. By tightening the pressing bolts 20... Screwed into the bolt holes 19. By pressing the vertical portions 6 and 6 of the reinforcing plates 5 and 5 against the side surfaces 2 and 2 of the horizontal member 1, the short claws 9 of the reinforcing plates 5 and 5 are securely attached to both side surfaces of the horizontal member 1. The horizontal member 1 and the two reinforcing plates 5 and 5 are integrated with each other.

  As shown in FIG. 8, a total of four clamping members 21... Are used, and these clamping members 21. Further, the horizontal member 1 may be sandwiched. As shown in FIG. 9, the U-shaped plate 22 of the sandwiching member 21 includes a substantially rectangular base piece 23 inserted into the through hole 3 of the horizontal member 1 and both ends of the base piece 23 from both ends. It consists of substantially rectangular extension pieces 24, 24 extending so as to cover the vertical portions 6, 6 of the reinforcing plates 5, 5, and one bolt hole 19 is formed in each of the extension pieces 24, 24. ing.

  In the horizontal member 1 in which the periphery of the through hole 3 is reinforced in this way, the short claws 9... Of the both reinforcing plates 5 and 5 bite into the horizontal member 1. Compared with the case where a long screw is screwed, the cross-sectional defect of the horizontal member 1 can be reduced.

  Moreover, when the horizontal member 1 reinforced around the through-hole 3 in this way is constructed as a beam or base of a wooden building, if bending stress or shear stress acts on the horizontal member 1, these stresses are Both reinforcements which are efficiently transmitted to both reinforcing plates 5 and 5 through a plurality of short claws 9... Which are firmly intruded on both side surfaces 2 and 2 of the horizontal member 1 and integrate these stresses with the horizontal member 1. The plates 5 and 5 can reliably bear the burden. Thereby, although it is the perforated horizontal material 1 which has the through-hole 3, sufficient intensity | strength performance equivalent to a non-porous horizontal material can be ensured.

  10 thru | or 13 has shown the reinforcement structure of the wooden horizontal member 1 which concerns on another embodiment. This horizontal member 1 avoids a place where a tensile force is likely to be generated, and corresponds to some of the punching holes 10... Of the reinforcing plates 5 and 5 that are bonded to both side surfaces 2 and 2 of the horizontal member 1. Thus, a plurality of bolt insertion holes 30... Are formed substantially parallel to the through hole 3.

  The range indicated by the fine dots in FIG. 12 indicates a range in which a tensile force is likely to be generated around the through hole 3 of the horizontal member 1 when bending stress is applied. The range indicated by the fine dots in FIG. The range in which the tensile force around the through hole 3 of the horizontal member 1 when stress is applied is likely to be generated is shown.

  Therefore, for example, when the horizontal member 1 is constructed in a place where bending stress is likely to act, bolt insertion holes 30... Are formed in the horizontal member 1 so as to avoid the range indicated by the thin dots in FIG. The For example, bolts are provided at three positions corresponding to the punched holes 10... Located at the upper center and the lower ends of the punched holes 10. Insertion holes 30 are formed. Further, when the horizontal member 1 is constructed in a place where shear stress is likely to act, bolt insertion holes 30... Are formed in the horizontal member 1 so as to avoid the range indicated by the fine points in FIG. . For example, bolts are provided at two positions corresponding to the punched holes 10... Located at the upper left end and the lower right end of the punched holes 10. Insertion holes 30 are formed.

  10 and 11 show an example of the horizontal member 1 constructed in a place where bending stress easily acts, and the horizontal member 1 in which the bolt insertion holes 30 are formed as described above is illustrated. Reinforcing plates 5 and 5 are respectively bonded to the side surfaces 2 and 2 so that the bolt insertion holes 30 and the corresponding punching holes 10 and the like coincide with each other.

  A plurality of through bolts 31... Penetrate through the horizontal member 1 and the reinforcing plates 5 and 5 through the bolt insertion holes 30 and the punched holes 10. Accordingly, the through bolts 31 are penetrated so as to avoid a portion where the tensile force of the horizontal member 1 is likely to be generated. As the through bolts 31..., Those having a small diameter thin bolt portion 32 and a small diameter head portion 33 are used, and the diameter of the bolt insertion holes 30.

  Nuts 34... Are screwed onto these through bolts 31..., And by tightening these nuts 34. The short claws 9... Of both reinforcing plates 5, 5 are securely bited into both side surfaces 2, 2 of the horizontal member 1 so that the reinforcing plates 5, 5 are sandwiched and the both reinforcing plates 5, 5 do not fall off. The horizontal member 1 and the two reinforcing plates 5 and 5 are integrated. Since the heads 33 and nuts 34 of the through bolts 31 are smaller in diameter than the punched holes 10 of the reinforcing plates 5 and 5, the diameter is smaller than that of the punched holes 10 and so on. The above-described sandwiching is performed with a large washer 40.

  In the horizontal member 1 in which the periphery of the through hole 3 is reinforced in this way, a plurality of bolt insertion holes 30... Are formed, but these bolt insertion holes 30. Since it is formed only in places where tensile force is difficult to occur, the cross section of the horizontal member 1 is required due to the formation of the bolt insertion holes 30... While preventing the proof stress of the horizontal member 1 from being reduced as much as possible. Can be minimized. Other configurations and operational effects are the same as those of the embodiment shown in FIGS.

  The present invention is not limited to the above embodiment, and it is needless to say that many modifications and changes can be made to the above embodiment within the scope of the present invention.

It is a front view which shows the reinforcement structure of the horizontal member which concerns on one Embodiment of this invention. It is the transverse cross section similarly. It is the side view similarly. It is a perspective view which shows the reinforcement plate bonded together on the both sides | surfaces of a horizontal member. It is an expansion perspective view of a reinforcement plate. It is a disassembled perspective view which shows the reinforcement structure of a horizontal member. It is an expansion perspective view of the U-shaped plate of a clamping member. It is a front view which shows the reinforcement structure using four other clamping members. It is an expansion perspective view of the U-shaped plate of another clamping member. It is a disassembled perspective view which shows the reinforcement structure of the horizontal member which concerns on another embodiment. It is the longitudinal cross-sectional view similarly. It is a figure which shows the range where the tensile force around the through-hole of a horizontal member when a bending stress acts is easy to generate | occur | produce. It is a figure which shows the range where the tensile force around the through-hole of a horizontal member when a shear stress acts is easy to generate | occur | produce.

Explanation of symbols

1 .. Wooden horizontal material 2 .. Side surface 3 .. Through hole 5 .. Reinforcement plate 7. Flange 9. Claw 10 .. Punching hole 11. , 21 .. Holding member, 16, 23 .. Base piece, 17, 24 .. Extension piece, 20 .. Pushing bolt, 30 .. Bolt insertion hole, 31 .. Through bolt, 33. ··nut,

Claims (5)

A reinforcing structure of a wooden horizontal member (1) in which a through hole (3) is formed between opposing side surfaces (2) and (2), wherein both side surfaces (2) ( Reinforcing plates (5), (5) having a plurality of claws (9),... Are laminated around the through hole (3) in 2). The material (1) is sandwiched between the sandwiching members (15) and (15), and the claws (9) of the reinforcing plates (5) and (5) are connected to both side surfaces (2) (2) ( 2) Reinforced structure of wooden horizontal members, characterized by being bitten into 2). The clamping member (15) extends from the base piece (16) inserted through the through hole (3) and from both ends of the base piece (16) so as to cover the reinforcing plates (5) and (5). The extended pieces (17) and (17) which are taken out, and the two reinforcing plates (5) and (5) are screwed into the extended pieces (17) and (17) to be attached to both side surfaces of the wooden horizontal member (1). (2) The reinforcing structure for a wooden horizontal member according to claim 1, further comprising pressing bolts (20) which are pressed against (2). Flange portions (7) and (7) extending in a substantially horizontal direction are formed at the upper ends of the reinforcing plates (5) and (5), and the floor base materials (11) and (11) are formed by the flange portions (7) and (7). The reinforcing structure of the wooden horizontal member according to claim 1 or 2, wherein the structure is supported . A reinforcing structure of a wooden horizontal member (1) in which a through hole (3) is formed between opposing side surfaces (2) and (2), wherein both side surfaces (2) ( Reinforcing plates (5), (5) having a plurality of claws (9),... Are laminated around the through hole (3) in 2). A through bolt (31) is passed through the material (1) so as to avoid a place where the tensile force of the wooden horizontal member (1) is likely to be generated, and screwed into the through bolt (31). By tightening the nuts (34),..., Both the reinforcing plates (5) (5) and the woody material by the heads (33) of the through bolts (31), and the nuts (34). Inserting the horizontal member (1), the claws (9) of the reinforcing plates (5), (5) A flange portion (7) (7) extending in a substantially horizontal direction is formed at the upper end of the reinforcing plate (5) (5) while biting into both side surfaces (2) (2) of the frame member (1). The reinforcing structure of the wooden horizontal member characterized by supporting the floor base material (11) (11) by the flange portions (7) (7) . Claws (9) of the reinforcing plates (5) (5) are formed by punching the necessary portions of the reinforcing plates (5) (5), and a plurality of punches produced by the punching are formed. Some of the holes (10) are aligned with the plurality of bolt insertion holes (30) formed in the wooden horizontal member (1), and these punched holes (10) and bolt insertion The reinforcing structure of the wooden horizontal member according to claim 4, wherein the through bolts (31) are passed through the holes (30) .