JP2016113805A - Construction method for wooden rigid-frame structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method for making a member joint part rigid for a wooden-structured building, the method being implemented readily even after completion of the building.SOLUTION: A reinforcing metal fitting is to be engaged and fixed in a groove part formed at a joint part between members of a wooden structure, and includes first and second slender plates that are parallel to each other, and a third slender plate placed and fixed in a direction orthogonal to the two slender plates. A basic configuration is that an internal corner at an orthogonal intersection between the plates is made R-shaped, the first and the second slender plates have a same length, and a length of the third slender plate is one to two times the length of the first and the second slender plates. The problem has been solved by using a reinforcing metal fitting at the joint part between members, setting the length of the first and/or the second slender plates at 1 to 0.6 times the initial length of the first and the second slender plates while keeping the length of the third slender plate unchanged.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a portion where a column or beam member joins in a frame structure such as a wooden frame structure that can realize a large opening without depending on a bearing wall, or a CLT (orthogonal laminated plate) or LVL (single plate). Laminated material), a wood structure member joining portion reinforcing bracket of a wood structure at a location where a member serving as a face material is joined, a frame structure using the member joining portion reinforcing bracket, or a wood structure of the face material structure The present invention also relates to a wooden structure reinforcing method in which the member joint reinforcing metal fitting is used for a frame structure or a face material structure.

The wooden frame structure, which is a frame structure, can realize a large opening and a large space, but there are no braces or bearing walls, so when a force is applied from the side due to an earthquake or wind, columns are connected at the beam-column joint. If the beam can rotate freely, it will become unstable as a building, so it is required to make the joint between the column and beam rigid so that it can resist earthquakes and wind. As a technique for rigid connection between a column and a beam, for example, Patent Document 1 discloses a structure in which a column member and a beam member in a wooden structure are connected by a metal plate that is bridged between the two. Disclosed is a structure for joining a column and a beam, in which a small cross section having a smaller cross-sectional area than the other portion is provided between a coupling portion of the metal plate to the column member and the coupling portion to the beam member. ing.

In addition, as a structure of the beam-to-column joint part of the wooden frame structure, Non-Patent Document 1 firstly arranges a large number of bending yield type metal fittings such as drift pins and bolts by using the finding surface of the member. As a type for transmitting a moment by the shear resistance, a structure of a steel sheet insertion drift pin joint 50 as shown in FIG. 7 is disclosed.

In the structure of the steel plate insertion drift pin joint 50 shown in FIG. 7, a vertical hole in which the flat insertion steel plate gusset plate 51 is inserted is drilled in the column 11, and a slit 53 in which the insertion steel plate gusset plate 51 is inserted in the beam 12. After the inserted steel plate gusset plate 51 is inserted into the column 11 and the beam 12, the plurality of drift pins 52 are inserted through the holes drilled in the column 11 and the holes 54 drilled in the inserted steel plate gusset plate 51. The plurality of drift pins 52 are inserted through the holes drilled in the beam 12 and the holes 54 drilled in the insertion steel plate gusset plate 51.

In addition, a structure in which a sheet board or a small square material is arranged or bonded in the width direction with the fiber directions thereof being substantially parallel to each other, is mainly laminated and bonded with the fiber directions being substantially perpendicular to each other to have a structure of three or more layers. In the case of using a CLT which is a material, a general material which is laminated and bonded mainly with a single plate having its fiber direction substantially parallel to each other, and a single plate whose fiber directions are orthogonal to each other, the total thickness of the orthogonal single plates is The LVL of general materials that are less than 30% of the product thickness and the composition ratio of the number of the single plates is 30% or less are both laminated face materials having a thickness. When used as a wall or the like of a wooden structure, it is a common practice to fix the face materials together by fastening the joints between the face materials with bolts and nuts.

JP 2002-38591 A

"Architectural May issue, 123 pages", Architectural Technology Co., Ltd., April 17, 2014

  However, both the wooden structure of Patent Document 1 and the wooden structure of Non-Patent Document 1, which have a wooden ramen structure, do not reach a rigid rigid connection such as a steel frame or a reinforced concrete structure of a ramen structure, but a semi-rigid connection Therefore, when a force is applied from the side by a strong earthquake or strong wind, there is a problem that the angle between the column and the beam opens or closes at the column beam joint.

  In addition, the wooden structure of Patent Document 1 and the wooden structure of Non-Patent Document 1 must be formed by machining slits on beams and columns in advance, and can be constructed at the time of new construction. When it was necessary to reinforce, there was a problem that the construction was difficult and the reinforcement was difficult.

  Further, as for the fastening method of the joint portion of CLT or LVL, in the case of fastening with a bolt nut or a large screw, a rigid joining of the joint portion of the face material has been required in order to be strong against a large natural disaster.

  Therefore, an object of the present invention is to easily perform the construction even when a wooden structure is newly constructed or after construction, and to make a rigid joint of a column beam joint when force is applied from the side by an earthquake or wind. The present invention is to provide a wood structure member joint reinforcing metal fitting to be realized, a wooden structure using the member joint reinforcing metal fitting, and a wooden structure reinforcing method using the member joint reinforcing metal fitting for the wooden structure. .

In order to solve the above-described problem, the member joint reinforcing metal fitting 1 according to claim 1 is a reinforcing metal fitting fitted and fixed to a groove 13 formed between members in a member joint 4 having a wooden structure. The first elongated plate 5 and the second elongated plate 6 in parallel, and the first elongated plate 5 between the first elongated plate 5 and the second elongated plate 6. A third elongated plate 7 fixedly arranged in the vertical direction with respect to the plate and the second elongated plate, respectively, and the third elongated plate 7 and the first elongated plate 5 or When the corner shape at the junction with the two elongated plates 6 is formed in an R shape, the lengths of the first and second elongated plates 5 and 6 are the same, and the length is set to 1. The length of the third elongated plate 7 is set to the first or first length. 1 to 2 times the plate ratio A = third elongated plate 7 length / (first or second elongated plate length 5, 6) with respect to the length of the elongated plates 5, 6 When the form having a length is used as a reference form, the length of the first and / or second elongated plates 5 and 6 is changed to the plate ratio without changing the length of the third elongated plate 7. B = (set first or second elongated plate length 5, 6) / (first or second elongated plate length 5, 6 in the reference form) 1 to 0.6 times longer It is characterized by setting to.

According to a second aspect of the present invention, in the member joining reinforcing metal fitting 1 according to the first aspect, the ratio of the length of the first or second elongated plate 5 or 6 to the length of the third elongated plate 7 is set to In the case of a reference form with a plate ratio A = 1 in which the lengths of the first, second and third elongated plates 5, 6, 7 are substantially the same, the plate ratio C = (first or second elongated length to be set) The length of the first and second elongated plates 5 and 6 is 1 to 0.6 times the third elongated plate 7 or the length of the first or second elongated plate 5, 6. In the case of the reference form with a plate ratio A = 2 in which the length ratio of the plate 7 is doubled, the plate ratio C is 0.5 to 0.3 times.

According to a third aspect of the present invention, in the member joint reinforcing metal fitting 1 according to the first or second aspect of the present invention, the third elongated plate 7 is located at the center position of each of the first elongated plate 5 and the second elongated plate 6. It is characterized by connecting each end.

According to a fourth aspect of the present invention, in the member joint reinforcing metal fitting 1 according to any one of the first to third aspects, the first elongate plate 5 and the second elongate plate 6 replace the third elongate plate 7. It arrange | positions so that it may mutually oppose. It is characterized by the above-mentioned.

The wood structure 8 according to claim 5 is a member according to any one of claims 1 to 4 across two members to be joined in the member joint portion 4 of the wood structure 8 of the shaft structure or the face material structure. The joint reinforcing metal fitting 1 is fitted and the first elongated plate 5 and the second elongated plate 6 are fitted parallel to the direction of the joint surface between the members.

The construction method of the wood structure 8 according to claim 6 is the member joining portion 4 of the wood structure of the frame structure or the face material structure, spanning the two members to be joined, and the first elongated plate 5 and the first plate 5. The groove portion 13 follows the shape formed by the member joint reinforcing metal fitting 1 according to any one of claims 1 to 4 so that the direction of the two elongated plates 6 is parallel to the direction of the joint surface between the members. A groove portion drilling step 21 for punching the adhesive, an adhesive pouring step 22 for pouring an adhesive into the formed groove portion 13, and the member joint portion reinforcing metal fitting 1 forcibly forcedly inserted into the groove portion 13 into which the adhesive has been poured by means. And a fitting fixing step 23 to be fitted to.

Since the member joint reinforcing metal fitting 1 according to any one of claims 1 to 4 is a reinforcing metal fitting having a simple configuration, there is an effect that it can be manufactured easily at low cost and in a short delivery time.

Further, since it can be further reinforced in addition to the conventional reinforcement, the joint structure of each member of the wooden structure 8 such as a wooden frame structure such as a wooden ramen structure and a CLT or LVL face material structure is further provided than the conventional reinforcement. The rigid joining can be greatly increased, and the effect of significantly increasing the rigid joining of the member joint portion 4 when a force is applied from the side due to an earthquake or wind can be achieved.

In addition, since construction can be performed from the surface of pillars, beams, or face materials, not only for new construction, but also for existing wooden framed frame structures and existing CLT and LVL face structure structures. Even for this, it is possible to easily perform additional construction at a low cost with a short delivery time.

The member joining portion reinforcing metal fitting 1 according to claim 2 achieves the same effect as that of the invention according to claim 1, and can realize rigid joining even when H-shaped steel is applied as the member joining portion reinforcing metal fitting 1. There is an effect.

The member joint portion reinforcing metal fitting 1 according to claim 3 has the same effect as that of claim 1 or 2, and the member joint portion of the wooden structure is subjected to a repeated load in the swinging direction from the left and right, for example, Since the shape of the member joining portion reinforcing metal fitting 1 is substantially T-shaped, it is possible to counter the left and right loads in the peeling direction applied to the joining portion, thereby making it difficult to peel both members and realizing rigid joining.

The member joint reinforcing metal fitting 1 according to claim 4 has the same effect as any one of claims 1 to 3, and, for example, when the form of the member joint reinforcing metal fitting 1 is substantially U-shaped, When the repetitive load in the swinging direction is applied from the left and right, for example, two U-shaped member joints are formed by fitting the member-shaped member joint reinforcing metal fittings 1 to face each other and fitting them into the member joint portions of the wooden structure. Since the part reinforcing metal fitting 1 can counter the left and right loads in the peeling direction applied to the member joining portion, both members are more difficult to peel off and rigid joining can be realized.

  The wood structure 8 using the wood structure member joint reinforcing bracket 1 according to claim 5 has the same effect as any one of claims 1 to 3, and for a newly built wood ramen structure building, In addition to a joint structure such as the joint structure disclosed in Patent Document 1 and the joint structure disclosed in Non-Patent Document 1 that has already been installed, the construction should be performed easily and inexpensively from the surface side of the joint. The construction can further enhance the rigid connection of the beam-column joint, and the column-beam joint 4 can be hardly deformed even if a force is applied from the side by a strong earthquake or strong wind.

The construction method of the wooden structure 8 according to claim 6 has the same effect as any one of claims 1 to 5 and can be easily constructed on a wooden structure at the time of new construction or an existing wooden structure. There is an effect that it is possible to enhance the rigid joining of the member joint portion of the structure.

It is a perspective view of the member junction part reinforcement metal fitting of the wooden structure of this invention. BRIEF DESCRIPTION OF THE DRAWINGS It is explanatory drawing of the relationship between the member joining part reinforcement metal fittings of the wooden structure of this invention, and H-shaped steel, (a) is a front view of the cross section of H-shaped steel, (b) is a front view of the member joining part reinforcement metal fittings of a wooden structure (C) is a perspective view of the H-shaped steel before cutting. It is the perspective view which fitted and fixed the member junction part reinforcement metal fitting of a wooden structure to the column beam junction part. It is a front view of the wooden frame structure which used the member joining part reinforcement metal fitting for the column beam etc. of the opening part of a wooden frame structure. It is explanatory drawing of the test method showing the method of a bending moment test. It is a perspective view of the comparison object of a bending moment test, (a) is a perspective view of the member junction part reinforcement metal fitting which uses an angle, (b) is a perspective view of the member junction part reinforcement metal fitting which uses a band iron. It is a perspective view which shows the state before joining of steel plate insertion drift pin joining in a wooden frame structure. It is the perspective view which fitted and fixed the member junction part reinforcement metal fitting of this invention to the wooden frame structure which joined the steel plate insertion drift pin. It is a general | schematic perspective view of the wooden frame structure using the steel plate insertion drift pin joining metal fitting. It is a general | schematic perspective view of the wooden frame structure which uses the member junction part reinforcement metal fitting of this invention for a steel plate insertion drift pin joint metal fitting. It is explanatory drawing of the tension test method of a member junction part reinforcement metal fitting. It is explanatory drawing of the face material wood structure which uses a fastener. It is a general | schematic perspective view of the face material wood structure which uses the member junction part reinforcement metal fitting of this invention for a fastener. It is a flowchart of the construction method of the wooden frame structure using the member junction part reinforcement metal fitting for wooden frame structures. It is a figure of the test result of the flange length and rigidity of a member junction part reinforcement metal fitting of a wooden structure. It is the figure which compared the yield strength at the time of adding the member junction part reinforcement metal fitting of a wooden structure to the conventional hardware only and the case of a conventional hardware.

As shown in FIG. 1, a wood structure member joint reinforcing bracket 1 according to the present invention is a reinforcing metal fitting fitted and fixed to a groove 13 formed between members in a wood structure member joint 4. Two elongated plates, a first elongated plate 5 and a second elongated plate 6 that are parallel to each other, and the first elongated plate between the first elongated plate 5 and the second elongated plate 6. And a third elongated plate 7 fixedly arranged in the vertical direction with respect to the second elongated plate, respectively, and the third elongated plate 7 and the first elongated plate 5 or the second elongated plate 7. When the corner shape of the joint with the elongated plate 6 is formed in an R shape, the first and second elongated plates 5 and 6 have the same length, and the length is 1, 3 of the elongated plate 7 is set to the first or second length. The plate ratio A = the length of the third elongated plate 7 / (the length of the first or second elongated plate length 5, 6) is 1 to 2 times the length of the elongated plates 5, 6 In the case where a shape having a thickness is used as a reference shape, the length of the first and / or second elongated plates 5 and 6 is set to a plate ratio B without changing the length of the third elongated plate 7. = (Set first or second elongated plate length 5, 6) / (first or second elongated plate length 5, 6 in the reference form) is 1 to 0.6 times longer Set.

An R-shape r is formed at the corners a and d formed at the joint between the third elongated plate 7 and the first elongated plate 5 or the second elongated plate 6. The R-shaped portion is manufactured integrally with the first to third elongated plates 5, 6 and 7 by rolling or casting, and the corners after the first to third elongated plates 5, 6 and 7 are completed. It is not formed later by meat welding. The first to third elongated plates 5, 6 and 7 and the R-shaped portion at the corner are integrally formed, so that the joint 81 between the column beam joint 4 or the face members 85 of the wooden structure. A high rigidity of the joint portion can be ensured when the member joint portion reinforcing metal fitting 1 is fitted.

The position a where the third elongated plate 7 and the first elongated plate 5 are fixed in the vertical direction, and the third elongated plate 7 and the second elongated plate 6 are fixed in the vertical direction. R-shape r is formed at each position d. By forming the R shape r, the positional relationship between the third elongated plate 7 and the first elongated plate 5 or the second elongated plate 6 is less likely to change due to rotation or the like. The orthogonal form of the third elongated plate fixed in the direction and the first or second elongated plate can be firmly maintained. Thereby, even when a force is applied from the side due to an earthquake or wind, the column beam joint or the face material joint of the wooden structure is firmly joined.

Further, the member joining reinforcing metal fitting 1 has a ratio of the length of the first or second elongated plate 5, 6 to the length of the third elongated plate 7 in the first, second and third elongated plates. Plate ratio C = (length of first or second elongated plate 5 or 6 to be set) / in the case of a reference form with a plate ratio A = 1 in which the lengths of the plate-like plates 5, 6, 7 are substantially the same The third elongate plate 7 is 1 to 0.6 times, or the ratio of the length of the third elongate plate 7 to the length of the first or second elongate plate 5 or 6 is 2. In the case of the reference form having a plate ratio A = 2, the form D is 0.5 to 0.3 times the plate ratio C.

Further, the member joint reinforcing metal fitting 1 has a form E in which the respective ends of the third elongated plate 7 are connected to the center positions of the first elongated plate 5 and the second elongated plate 6.

Further, the member joint reinforcing metal fitting 1 has a form F in which the first elongated plate 5 and the second elongated plate 6 are disposed so as to face each other across the third elongated plate 7. .

When the form of the member joint reinforcing metal fitting 1 is H-shaped, it is a form provided with all of the above forms D, E and F, and when the form of the member joint reinforcing metal fitting 1 is substantially U-shaped There are forms with D and Form F. Not only the H-shaped and substantially U-shaped member joint reinforcing metal fittings 1, but all member joint reinforcing metal fittings 1 include a third elongated plate 7 and first or second elongated plates 5, 6. It is necessary to form an R shape at all of the four corners, and the R shape remains even when the first or second elongated plates 5 and 6 are cut.

The application target of the member joint reinforcement metal fitting 1 is a building having a frame structure such as a wooden ramen structure, a building having a face material structure such as CLT (orthogonal laminated board) or LVL (single-plate laminated material), and As buildings, large-scale wooden structures such as private houses, apartment houses, and school buildings are targeted, so the sizes of columns and beams of wooden buildings are different. Depending on the form of the joint portion or the thickness of the face material, the width, length or thickness of the first to third elongated plates 5, 6, 7 of the member joint portion reinforcing metal fitting 1, the dimensions such as the R shape, The thickness is set as long as possible and is appropriately set to have a large R shape.

Next, since the form of the member joint reinforcing metal fitting 1 includes an H-shape, it will be described that H-shaped steel can be used as the member joint reinforcing metal fitting 1. As shown in FIG. 2A, the first elongated plate 5, the second elongated plate 6 and the third elongated plate 7 which are constituent elements of the member joint reinforcing metal fitting 1 are respectively H-shaped steels. 14 first flanges 15, second flanges 16, and webs 17. Therefore, the H-shaped steel 14 can be manufactured by cutting at a predetermined thickness of the member joint reinforcing metal fitting 1. Or when making it substantially U-shaped, the H-shaped steel 14 is cut | disconnected by the predetermined thickness of the member junction part reinforcement metal fitting 1, and length L2 by the side of other end is made shorter than length L1 by the side of one end b In addition, the first flange 15 and the second flange 16 of the H-shaped steel 14 can be partially cut to a predetermined length to be manufactured as shown in FIG.

Further, the H-shaped steel 30 as shown in FIG. 2 (c) has a wide series, a medium series, and a narrow series, and has a height 31 (web longitudinal dimension and flange plate thickness) and a width 32 (flange longitudinal dimension). ) And the type (nominal dimensions) are determined, and the cross-sectional dimensions are height 31, width 32, plate thickness 33 of the upper flange (corresponding to the first elongated plate), and lower flange (second The size of the plate thickness 34 corresponding to the elongated plate), the thickness 35 of the web (corresponding to the third elongated plate 7) and R36 are defined.

A case where the H-shaped steel 30 is used as the member joint reinforcing metal fitting 1 at the member joint will be described. For example, the H-shaped steel 30 that does not interfere with the reinforcing bracket provided inside the beam-column joint 4 and is as large as possible is selected depending on the size of the beam-column joint 4 of the wooden frame structure 2 and the type and size of the bracket. The length in the depth direction 37 of the H-shaped steel 30 of the selected model (nominal dimension) is determined so as to be equal to or less than the dimension from the surface of the column-beam joint 4 to the reinforcement fitting installed in the columns 11 and 12. Then, the H-shaped steel 30 is cut with the determined length 37 in the depth direction. By further cutting the flange of the cut H-shaped steel 14 (corresponding to the first elongated plate and the second elongated plate), the member joint reinforcing bracket 1 can be manufactured. When the H-shaped steel 14 is used as the member joint reinforcing metal fitting 1, it can be easily and quickly manufactured at a very low cost.

Next, a wooden structure using the member joint reinforcing metal fitting 1 will be described. For example, as shown in FIG. 3 and FIG. 4, the wooden frame structure 2 using the member connection portion reinforcing bracket 1 uses only the member connection portion reinforcing bracket 1 for the column beam connection portion 4 of the wooden frame structure. Instead, as shown in FIG. 8 and FIG. 10, a member that is additionally processed to a metal fitting generally constructed in a wooden ramen structure, such as a configuration in which the member joint reinforcing metal fitting 1 is constructed together with the steel plate insertion drift pin joint 50. This is a structure for constructing the joint reinforcing metal fitting 1.

The construction of the steel plate insertion drift pin joint 50 is because it is very difficult to reinforce after construction because the holes and slits for metal fitting insertion are provided inside the pillar 11 and the beam 12, but the member joint reinforcement metal fitting 1 of the present invention is used. Since it can be applied to the column beam joint 4 from the surface side of the column 11 and the beam 12, it is easy both when building a wooden frame structure 2 and after it is built. It is inexpensive and can be installed with a short delivery time.

The wooden ramen structure 2 using the member joint reinforcing bracket 1 for the wooden ramen structure is a front shape of the two member joint reinforcing brackets 1 to be fitted over the column 11 and the beam 12 in the column beam joint 4. The member joint portion reinforcing metal fitting 1 is forcibly fitted and fixed to the two groove portions 13 formed by following the substantially H-shaped shape by appropriate means such as driving in with a hammer. The groove 13 is perforated so that the distance between the third elongated plate 7 or the web 17 of the two opposing member joint reinforcing metal fittings 1 is as wide as possible in the column beam joint 4. When the groove 13 is perforated so as to expand, the column beam joint 4 is rigidly joined.

Further, the length L2 from the junctions a and d with the third elongated plate 6 to the other end c side of the first elongated plate 5 or the second elongated plate 6 is set to the one end b side. When the length is the same as the length L1, it is suitable for the case where there is a sufficient range for fitting the member joint reinforcing bracket 1 in the column beam joint 4 of the wooden frame structure, while the length L2 is not longer than the R stop. In the case of the length, when the range in which the member-joint reinforcing bracket 1 is fitted in the column beam joint 4 having a wooden frame structure is narrow, or two member joint-strengthening brackets 1 at one column-beam joint 4 are used. It is suitable for the case where the gap is extended outward. Two third elongated plates 6 are fitted and fixed by arranging the two member joint reinforcing brackets 1 in the column beam joints 4 at one location so as to be arranged in the outward direction with a wide interval. For this reason, even when force is applied from the side due to an earthquake or wind, the beam-column joint of the wooden frame structure is firmly connected.

Next, the construction method of the wooden structure 8 will be described. For example, as shown in FIG. 13, the construction method 3 of the wooden frame structure using the member joint reinforcing metal fitting 1 is fitted over both the column 11 and the beam 13 in the column beam connection portion 4 of the wooden frame structure. Following the approximately H-shape, which is the front shape of the two opposing wood ramen structure member joint reinforcing metal fittings 1 to be tried, there are two locations where a drift pin or the like for fixing a general metal fitting can be avoided. The groove portion drilling step 21 for drilling the groove portion 13 with a cutting tool such as a router, the adhesive pouring step 22 for pouring the adhesive into the two groove portions 13 formed, and the groove portion 13 into which the adhesive has been poured A fitting fixing step 23 for forcibly fitting the member joint reinforcing metal fitting 1 by an appropriate means such as hammering. Then, since the adhesive protrudes from the groove 13 in the fitting and fixing step 23, the member joint reinforcing metal fitting 1 is covered with the adhesive protruding using the spatula, and the surface around the groove 13 is a flat surface. A surface planarization step 24 is provided.

The adhesive will be described. The adhesive is poured into the bottom of the groove 13 such as an adhesive such as epoxy, which is difficult to shrink before fitting the member joint reinforcing metal fitting 1. Next, when the adhesive is in a liquid state, the member joining portion reinforcing metal fitting 1 is fitted into the groove portion 13, and then the surface around the groove portion 13 is flattened with a spatula. With this adhesive, the fixation of the member joint reinforcing bracket 1 to the beam-column joint 4 is strengthened, whereby the beam-beam joint 4 can be rigidly joined. Thereby, although it is a large opening part of the wooden frame structure 2, it is possible to make an earthquake resistant structure, and when a force from the side is applied due to an earthquake or a wind load, the columns 11 and 12 of the column beam joint 4 The joint state becomes hard and rigid.

As the adhesive, a high-strength resin that does not shrink when it hardens is suitable, for example, an epoxy resin. Since it does not shrink when it hardens, there is no gap in the groove 13 after it hardens, and if the adhesive is filled without any gap, the member joint reinforcing bracket 1 will not move. Further, in the case of a resin that cures quickly, the column beam joint 4 can be fastened quickly and does not loosen by external force before it is solidified.

Next, as a test body of the beam-to-column joint 4 of the wooden frame structure 2, four sets of the laminated material width 120 mm × column column 240 mm × beam column 330 mm as shown in FIG. 5 are prepared, respectively, as shown in FIG. A test body in which a steel plate insertion drift pin joint 50 is carried out, and a member joint reinforcing metal fitting 1 cut from an H-shaped steel as shown in FIG. 1 is fitted and fixed, and an angle 40 as shown in FIG. A test specimen that is fixed and fixed, a form in which a band iron 41 as shown in FIG. 6B is fitted and fixed, and a form in which only a steel plate insertion drift pin joint 50 is provided in the beam-column joint 4 without additional reinforcement. The test was conducted.

The member joint reinforcing metal fitting 1 subjected to the test has a form as shown in FIG. 1, L1 is 74.5 mm, L2 is 15 mm, r is 13r, height 31 is 298 mm, and the plate thickness 35 of the web 17 is 35 mm. The plate thickness of 5.5 mm, the 1st flange, and the 2nd flange is 8 mm, and it cut and made from H-shaped steel.

As a test method, as shown in FIG. 5, the column 11 side is fixed sideways and fixed as a base, and the beam 12 side is set vertically and applied to the load point K on the beam 12 side by a hydraulic jack from the horizontal direction. The moments when the deformation angle θ of the beam-column joint 4 reached a predetermined value were compared. The deformation angle θ of the beam-column joint was 1/600 rad, 1/450 rad, 1/300 rad, 1/200 rad, 1/150 rad, and 1/100 rad, each of three positive and negative alternating forces.

The applied force is P, the dimension between the applied points from the column core is S, and the displacement values at the four corners of the column beam joint surface are the measured values of the displacement meter a (the left point on the front side in FIG. 5), Measured value of (distant side in FIG. 5 on the right side), measured value of displacement gauge C (left side of the back side in FIG. 5), measured value of displacement gauge D (right side of the back side in FIG. 5) And the distance between the displacement gauges is H. The average value of the measured values of the displacement meter A and the displacement meter C is δ1, and the average value of the measured values of the displacement meter B and the displacement meter D is δ2. As a result, the deformation angle θ of the beam-column joint is determined by (δ1−δ2) / H, and the moment is determined by (force P × S). In the example, the dimension S between the applied points from the column core was 1500 mm, and the distance H between the displacement gauges was 330 mm. In addition, model PS-10-B4 (maximum capacity 100 kN) manufactured by Maekawa Test Co., Ltd. was used as the test machine.

The test results are shown in Table 1. Each test body is a comparative test result of moments at the same deformation angle θ in four cases in which the steel sheet insertion drift pin joint 50 is performed and three types of metal fittings are additionally reinforced and not reinforced.

  Next, based on the test results of Table 1, the moment of the test specimen to be compared was set to 1.00 times, and the magnification of the moment of the specimen of the member joint reinforcing metal fitting 1 of the present invention was determined. 4 shows.

From Table 2, when the member joint reinforcing metal fitting 1 of the present invention is used, the joint moment when the deformation angle θ is 1/200 rad is 1.21 times stronger than when the band iron 41 is reinforced, and the deformation angle θ It is shown that the joint moment at 1/150 rad is 1.20 times stronger and the joint moment is 1.14 times stronger when the deformation angle θ is 1/120 rad.

From Table 3, when the member joint reinforcing metal fitting 1 of the present invention is used, the joint moment when the deformation angle θ is 1/200 rad is 1.12 times stronger than when the angle 40 is reinforced, and the deformation angle θ is It is shown that the joint moment when 1/150 rad is 1.14 times stronger and the joint moment when the deformation angle θ is 1/120 rad is 1.11 times stronger.

From Table 4, when using the member joint reinforcing metal fitting 1 of the present invention, the joint moment when the deformation angle θ is 1/200 rad is 2.14 times stronger than when no additional reinforcement is performed, and the deformation angle θ It is shown that the joint moment at 1/150 rad is 2.17 times stronger and the joint moment at the deformation angle θ is 1/120 rad is 2.05 times stronger.

From the above, the member joining portion reinforcing metal fitting 1 realizes a rigid joining that is twice or more compared to the conventional metal fittings, and a rigid joining that is 10% or more compared to the angle 40 and the band iron 41. Realized. As a result, it is possible to realize a rigid joint of the beam-column joint 4 of the wooden frame structure 2 that realizes a large opening as shown in FIG. 4, and the beam-column joint 4 is bent and deformed against an earthquake or wind load. We realized a difficult wooden ramen structure 2.

Next, it tested about the effect of the member junction part reinforcement metal fitting 1 of this invention. The conventional product is a steel sheet insertion drift pin fitting shown in FIGS. As shown in FIG. 9, the provided conventional product is provided with a slit 53 for the inserted steel sheet gusset plate 51 in one member 83a of the joint, and a hole 89b for inserting the drift pin 52 is formed. The inserted steel plate gusset plate 51 is provided with a hole 89c for inserting the drift pin 52 in the flat plate portion, and a nut 87 in the vertical direction on the flat plate. Bolt insertion holes 89a are formed in the other joining member 83b. Therefore, the joining member 83 a and the joining member 83 b are attached via the inserted steel sheet gusset plate 51.

It compared with the case where the member junction part reinforcement metal fitting 1 of this invention is added to this type. The test method was carried out using the same method as in Example 1. The result is shown in FIG. Further, from FIG. 16, the rigidity of the conventional iron metal A is set to 1 and Table 5 shows a comparison in the case.

  FIG. 16 and Table 5 show that the rigidity of the joint is increased when the member joint reinforcing metal fitting 1 of the present invention is added to the conventional hardware.

Next, the effect on the face material was tested. The member-joint reinforcing bracket 1 is fitted on the surface of the fastener 86 as shown in FIG. 13 in the face material wood structure shown in FIG. 12, and the position of the height of 1600 mm from the floor is hydraulic jacks from the side. Was pressurized. When the deformation angle is alternating between positive and negative alternating, load is applied toward the deformation angle of 1/600, 1/450, 1/300, 1/200, 1/150, 1/100, then 1/15 rad, and the maximum load is reached It was finished when the load dropped to 20% of the maximum load. The results are shown in Table 6.

From Table 6, as compared with the conventional bolt and nut fastener, the peeling of the face material is less likely to occur and the lift from the joint portion of the face material is less likely to occur.

Next, the relationship between flange length and bondability was investigated. As shown in FIG. 11, the beam or the column is fixed, and the member joint reinforcing metal fitting 1 is fitted with the flange on one side, and the flange on the other side is pulled at a speed of 25 mm per minute and compared at the maximum load. . The member joint reinforcing metal fitting 1 was made of H-shaped steel (400 × 200 × 8 × 13 × 20), and the fixed side corresponding to the beam or the column was E120-F330 bay pine cedar heterogeneous laminated wood. As the tester, model HZS-50-LB1 manufactured by Maekawa Tester Manufacturing Co., Ltd. was used. The result is shown in FIG.

From FIG. 15, it is shown that the symmetric flange has higher tensile force than the left and right non-objects, and the length of the flange of the H-shaped steel is 1 to 0.6 times as long as 1 as it is. It is shown that the tensile force is high in the length range.

DESCRIPTION OF SYMBOLS 1 Member joining part reinforcement metal fittings 2 Wooden frame structure 3 Construction method of wooden frame structure 4 Joint part 5 1st elongate plate 6 2nd elongate plate 7 3rd elongate plate 8 Wood structure 10 pillar beam Joint 11 Column 12 Beam 13 Groove 14 H-shaped steel 15 First flange 16 Second flange 17 Web 21 Groove drilling process 22 Adhesive pouring process 23 Fitting and fixing process 24 Surface flattening process 30 H-shaped steel 31 Height 32 Width 33 Plate thickness 34 Plate thickness 35 Plate thickness 36 R
37 Depth direction 40 Angle 41 Band iron 50 Steel plate insertion drift pin joint 51 Insert steel plate gusset plate 52 Drift pin 53 Slit 54 Hole 80 Face material wood structure 81 Face material joining part 82 Groove part 83a Joining member 83b Joining member 85 Face member 86 Fastening Tool 87 Nut 88 Bolt 89a Hole 89b Hole 89c Hole a Joint part b One end c The other end d Joint part r R shape L1 Length L2 Length

  The present invention relates to a portion where a column or beam member joins in a frame structure such as a wooden frame structure that can realize a large opening without depending on a bearing wall, or a CLT (orthogonal laminated plate) or LVL (single plate). Laminated material), a wood structure member joining portion reinforcing bracket of a wood structure at a location where a member serving as a face material is joined, a frame structure using the member joining portion reinforcing bracket, or a wood structure of the face material structure The present invention also relates to a wooden structure reinforcing method in which the member joint reinforcing metal fitting is used for a frame structure or a face material structure.

The wooden frame structure, which is a frame structure, can realize a large opening and a large space, but there are no braces or bearing walls, so when a force is applied from the side due to an earthquake or wind, columns are connected at the beam-column joint. If the beam can rotate freely, it will become unstable as a building, so it is required to make the joint between the column and beam rigid so that it can resist earthquakes and wind. As a technique for rigid connection between a column and a beam, for example, Patent Document 1 discloses a structure in which a column member and a beam member in a wooden structure are connected by a metal plate that is bridged between the two. Disclosed is a structure for joining a column and a beam, in which a small cross section having a smaller cross-sectional area than the other portion is provided between a coupling portion of the metal plate to the column member and the coupling portion to the beam member. ing.

In addition, as a structure of the beam-to-column joint part of the wooden frame structure, Non-Patent Document 1 firstly arranges a large number of bending yield type metal fittings such as drift pins and bolts by using the finding surface of the member. As a type for transmitting a moment by the shear resistance, a structure of a steel sheet insertion drift pin joint 50 as shown in FIG. 7 is disclosed.

In the structure of the steel plate insertion drift pin joint 50 shown in FIG. 7, a vertical hole in which the flat insertion steel plate gusset plate 51 is inserted is drilled in the column 11, and a slit 53 in which the insertion steel plate gusset plate 51 is inserted in the beam 12. After the inserted steel plate gusset plate 51 is inserted into the column 11 and the beam 12, the plurality of drift pins 52 are inserted through the holes drilled in the column 11 and the holes 54 drilled in the inserted steel plate gusset plate 51. The plurality of drift pins 52 are inserted through the holes drilled in the beam 12 and the holes 54 drilled in the insertion steel plate gusset plate 51.

In addition, a structure in which a sheet board or a small square material is arranged or bonded in the width direction with the fiber directions thereof being substantially parallel to each other, is mainly laminated and bonded with the fiber directions being substantially perpendicular to each other to have a structure of three or more layers. In the case of using a CLT which is a material, a general material which is laminated and bonded mainly with a single plate having its fiber direction substantially parallel to each other, and a single plate whose fiber directions are orthogonal to each other, the total thickness of the orthogonal single plates is The LVL of general materials that are less than 30% of the product thickness and the composition ratio of the number of the single plates is 30% or less are both laminated face materials having a thickness. When used as a wall or the like of a wooden structure, it is a common practice to fix the face materials together by fastening the joints between the face materials with bolts and nuts.

JP 2002-38591 A

"Architectural May issue, 123 pages", Architectural Technology Co., Ltd., April 17, 2014

  However, both the wooden structure of Patent Document 1 and the wooden structure of Non-Patent Document 1, which have a wooden ramen structure, do not reach a rigid rigid connection such as a steel frame or a reinforced concrete structure of a ramen structure, but a semi-rigid connection Therefore, when a force is applied from the side by a strong earthquake or strong wind, there is a problem that the angle between the column and the beam opens or closes at the column beam joint.

  In addition, the wooden structure of Patent Document 1 and the wooden structure of Non-Patent Document 1 must be formed by machining slits on beams and columns in advance, and can be constructed at the time of new construction. When it was necessary to reinforce, there was a problem that the construction was difficult and the reinforcement was difficult.

  Further, as for the fastening method of the joint portion of CLT or LVL, in the case of fastening with a bolt nut or a large screw, a rigid joining of the joint portion of the face material has been required in order to be strong against a large natural disaster.

  Therefore, an object of the present invention is to easily perform the construction even when a wooden structure is newly constructed or after construction, and to make a rigid joint of a column beam joint when force is applied from the side by an earthquake or wind. The present invention is to provide a wood structure member joint reinforcing metal fitting to be realized, a wooden structure using the member joint reinforcing metal fitting, and a wooden structure reinforcing method using the member joint reinforcing metal fitting for the wooden structure. .

In order to solve the above-mentioned problem, the reinforcing metal fitting 1 according to claim 1 is provided in the member joint portion 4 of the wooden frame structure 2 in addition to the existing first joint metal fitting 91 and drilled between the members. Reinforcing metal fittings 1 as second joining metal fittings 92 fitted and fixed to the formed groove 13, wherein the reinforcing metal fittings 1 are two elongate plates 1 and 5 that are parallel to each other. A first plate and a first elongated plate 5 and a second elongated plate 6 are fixedly arranged in a vertical direction with respect to the first elongated plate 5 and the second elongated plate 6, respectively. 3, and the third elongated plate 7 is fitted and fixed in a groove 13 formed in a direction perpendicular to the joint surface 4 between the members, and the joint surface 4 between the members. 1st elongated shape in the groove 13 drilled parallel to the direction of Rate 5 and a second elongated plate 6 and fixedly fitted, and the third elongated plate 7, on both sides of each of the joint between the first elongated plate 5 and the second elongated plate 6 It is characterized in that a corner shape formed of an R shape is formed .

According to a second aspect of the present invention, in the reinforcing metal fitting 1 according to the first aspect, the ends of the third elongated plate 7 are connected to the center positions of the first elongated plate 5 and the second elongated plate 6, respectively. It is characterized by letting

Reinforcing bracket 1 according to claim 3, Oite to claim 1 or 2, a first elongated plate 5 and the second elongated plate 6, opposed at a third elongated plate 7 It is arranged so that it may be arranged.

In the wood ramen structure 2 according to claim 4, the reinforcing metal fitting 1 according to any one of claims 1 to 3 is fitted over the two members to be joined in the member joining portion 4 of the wood ramen structure 2. It is characterized by that.

Construction method of wooden rigid frame structure 2 according to claim 5, in the member bonding portion 4 of Timber Frame structure 2, over two members to be joined, a first elongated plate 5 and the second elongated plate 6 so that the direction is parallel to the direction of the junction surface between the members, and so that the direction of the third elongated plate is perpendicular to the direction of the junction surface between the members, any of claims 1 to 3 In accordance with the shape formed by the reinforcing metal fitting 1 described above, a groove drilling step 21 for drilling the groove 13, an adhesive pouring step 22 for pouring the adhesive into the formed groove 13, and an adhesive pour. And a fitting and fixing step 23 for forcibly fitting the reinforcing metal fitting 1 into the groove 13 by appropriate means.

Since the reinforcing metal fitting 1 for a member joint portion according to any one of claims 1 to 3 is a reinforcing metal fitting having a simple configuration, it has an effect that it can be manufactured easily at a low cost and in a short delivery time.

Further, since it can be further reinforced in addition to the conventional reinforcement, the joint structure of each member of the wooden structure 8 such as a wooden frame structure such as a wooden ramen structure and a CLT or LVL face material structure is further provided than the conventional reinforcement. The rigid joining can be greatly increased, and the effect of significantly increasing the rigid joining of the member joint portion 4 when a force is applied from the side due to an earthquake or wind can be achieved.

In addition, since construction can be performed from the surface of pillars, beams, or face materials, not only for new construction, but also for existing wooden framed frame structures and existing CLT and LVL face structure structures. Even for this, it is possible to easily perform additional construction at a low cost with a short delivery time.

Further , even when H-shaped steel is applied as the reinforcing metal fitting 1, there is an effect that the rigid joining can be realized.

The reinforcing metal fitting 1 according to the second aspect has the same effect as the invention according to the first aspect , and even when a repeated load in the swinging direction is applied to the member joint portion of the wooden ramen structure 2 from the left and right, for example, Since the shape of the reinforcing metal fitting 1 at the joint portion is substantially T-shaped, it is possible to counter the left and right loads in the peeling direction applied to the joint portion, thereby making it difficult to peel both members and realizing rigid joining.

The reinforcing metal fitting 1 according to claim 3 has the same effect as that of the first or second aspect. For example, when the reinforcing metal fitting 1 is substantially U-shaped, the two U-shaped reinforcing metal fittings 1 are opposed to each other. Thus, even when a repeated load in the swinging direction is applied from the left and right, for example, the two U-shaped reinforcing metal fittings 1 add the member joint to the member joint by being fitted to the member joint of the wooden frame structure 2. Since it is possible to counter the left and right loads in the peeling direction, it is difficult to peel off both members, and a rigid connection can be realized.

The wooden ramen structure 2 using the reinforcing metal fitting 1 at the member joint portion of the wooden ramen structure according to claim 4 has the same effect as any one of claims 1 to 3, and is a newly built wooden ramen structure building. On the other hand, in addition to a joint structure such as the joint structure disclosed in Patent Document 1 and the joint structure disclosed in Non-Patent Document 1 already provided, it can be easily and inexpensively and quickly delivered from the surface side of the joint. It can be constructed, and the construction can further enhance the rigid connection of the beam-column joint, and even if a force is applied from the side due to a strong earthquake or strong wind, it is difficult to deform the beam-column joint 4. Play.

The construction method of the wood ramen structure 2 according to claim 5 has the same effect as any one of claims 1 to 4 and is easy with respect to the wood ramen structure 2 at the time of new construction or the existing wood ramen structure 2 . It is possible to construct a rigid joint at the member joint portion of the wooden ramen structure 2 and to improve the effect.

It is a perspective view of the member junction part reinforcement metal fitting of the wooden structure of this invention. BRIEF DESCRIPTION OF THE DRAWINGS It is explanatory drawing of the relationship between the member joining part reinforcement metal fittings of the wooden structure of this invention, and H-shaped steel, (a) is a front view of the cross section of H-shaped steel, (b) is a front view of the member joining part reinforcement metal fittings of a wooden structure (C) is a perspective view of the H-shaped steel before cutting. It is the perspective view which fitted and fixed the member junction part reinforcement metal fitting of a wooden structure to the column beam junction part. It is a front view of the wooden frame structure which used the member joining part reinforcement metal fitting for the column beam etc. of the opening part of a wooden frame structure. It is explanatory drawing of the test method showing the method of a bending moment test. It is a perspective view of the comparison object of a bending moment test, (a) is a perspective view of the member junction part reinforcement metal fitting which uses an angle, (b) is a perspective view of the member junction part reinforcement metal fitting which uses a band iron. It is a perspective view which shows the state before joining of steel plate insertion drift pin joining in a wooden frame structure. It is the perspective view which fitted and fixed the member junction part reinforcement metal fitting of this invention to the wooden frame structure which joined the steel plate insertion drift pin. It is a general | schematic perspective view of the wooden frame structure using the steel plate insertion drift pin joining metal fitting. It is a general | schematic perspective view of the wooden frame structure which uses the member junction part reinforcement metal fitting of this invention for a steel plate insertion drift pin joint metal fitting. It is explanatory drawing of the tension test method of a member junction part reinforcement metal fitting. It is explanatory drawing of the face material wood structure which uses a fastener. It is a general | schematic perspective view of the face material wood structure which uses the member junction part reinforcement metal fitting of this invention for a fastener. It is a flowchart of the construction method of the wooden frame structure using the member junction part reinforcement metal fitting for wooden frame structures. It is a figure of the test result of the flange length and rigidity of a member junction part reinforcement metal fitting of a wooden structure. It is the figure which compared the yield strength at the time of adding the member junction part reinforcement metal fitting of a wooden structure to the conventional hardware only and the case of a conventional hardware.

As shown in FIG. 1, a wood structure member joint reinforcing bracket 1 according to the present invention is a reinforcing metal fitting fitted and fixed to a groove 13 formed between members in a wood structure member joint 4. Two elongated plates, a first elongated plate 5 and a second elongated plate 6 that are parallel to each other, and the first elongated plate between the first elongated plate 5 and the second elongated plate 6. And a third elongated plate 7 fixedly arranged in the vertical direction with respect to the second elongated plate, respectively, and the third elongated plate 7 and the first elongated plate 5 or the second elongated plate 7. When the corner shape of the joint with the elongated plate 6 is formed in an R shape, the first and second elongated plates 5 and 6 have the same length, and the length is 1, 3 of the elongated plate 7 is set to the first or second length. The plate ratio A = the length of the third elongated plate 7 / (the length of the first or second elongated plate length 5, 6) is 1 to 2 times the length of the elongated plates 5, 6 In the case where a shape having a thickness is used as a reference shape, the length of the first and / or second elongated plates 5 and 6 is set to a plate ratio B without changing the length of the third elongated plate 7. = (Set first or second elongated plate length 5, 6) / (first or second elongated plate length 5, 6 in the reference form) is 1 to 0.6 times longer Set.

An R-shape r is formed at the corners a and d formed at the joint between the third elongated plate 7 and the first elongated plate 5 or the second elongated plate 6. The R-shaped portion is manufactured integrally with the first to third elongated plates 5, 6 and 7 by rolling or casting, and the corners after the first to third elongated plates 5, 6 and 7 are completed. It is not formed later by meat welding. The first to third elongated plates 5, 6 and 7 and the R-shaped portion at the corner are integrally formed, so that the joint 81 between the column beam joint 4 or the face members 85 of the wooden structure. A high rigidity of the joint portion can be ensured when the member joint portion reinforcing metal fitting 1 is fitted.

The position a where the third elongated plate 7 and the first elongated plate 5 are fixed in the vertical direction, and the third elongated plate 7 and the second elongated plate 6 are fixed in the vertical direction. R-shape r is formed at each position d. By forming the R shape r, the positional relationship between the third elongated plate 7 and the first elongated plate 5 or the second elongated plate 6 is less likely to change due to rotation or the like. The orthogonal form of the third elongated plate fixed in the direction and the first or second elongated plate can be firmly maintained. Thereby, even when a force is applied from the side due to an earthquake or wind, the column beam joint or the face material joint of the wooden structure is firmly joined.

Further, the member joining reinforcing metal fitting 1 has a ratio of the length of the first or second elongated plate 5, 6 to the length of the third elongated plate 7 in the first, second and third elongated plates. Plate ratio C = (length of first or second elongated plate 5 or 6 to be set) / in the case of a reference form with a plate ratio A = 1 in which the lengths of the plate-like plates 5, 6, 7 are substantially the same The third elongate plate 7 is 1 to 0.6 times, or the ratio of the length of the third elongate plate 7 to the length of the first or second elongate plate 5 or 6 is 2. In the case of the reference form having a plate ratio A = 2, the form D is 0.5 to 0.3 times the plate ratio C.

Further, the member joint reinforcing metal fitting 1 has a form E in which the respective ends of the third elongated plate 7 are connected to the center positions of the first elongated plate 5 and the second elongated plate 6.

Further, the member joint reinforcing metal fitting 1 has a form F in which the first elongated plate 5 and the second elongated plate 6 are disposed so as to face each other across the third elongated plate 7. .

When the form of the member joint reinforcing metal fitting 1 is H-shaped, it is a form provided with all of the above forms D, E and F, and when the form of the member joint reinforcing metal fitting 1 is substantially U-shaped There are forms with D and Form F. Not only the H-shaped and substantially U-shaped member joint reinforcing metal fittings 1, but all member joint reinforcing metal fittings 1 include a third elongated plate 7 and first or second elongated plates 5, 6. It is necessary to form an R shape at all of the four corners, and the R shape remains even when the first or second elongated plates 5 and 6 are cut.

The application target of the member joint reinforcement metal fitting 1 is a building having a frame structure such as a wooden ramen structure, a building having a face material structure such as CLT (orthogonal laminated board) or LVL (single-plate laminated material), and As buildings, large-scale wooden structures such as private houses, apartment houses, and school buildings are targeted, so the sizes of columns and beams of wooden buildings are different. Depending on the form of the joint portion or the thickness of the face material, the width, length or thickness of the first to third elongated plates 5, 6, 7 of the member joint portion reinforcing metal fitting 1, the dimensions such as the R shape, The thickness is set as long as possible and is appropriately set to have a large R shape.

Next, since the form of the member joint reinforcing metal fitting 1 includes an H-shape, it will be described that H-shaped steel can be used as the member joint reinforcing metal fitting 1. As shown in FIG. 2A, the first elongated plate 5, the second elongated plate 6 and the third elongated plate 7 which are constituent elements of the member joint reinforcing metal fitting 1 are respectively H-shaped steels. 14 first flanges 15, second flanges 16, and webs 17. Therefore, the H-shaped steel 14 can be manufactured by cutting at a predetermined thickness of the member joint reinforcing metal fitting 1. Or when making it substantially U-shaped, the H-shaped steel 14 is cut | disconnected by the predetermined thickness of the member junction part reinforcement metal fitting 1, and length L2 by the side of other end is made shorter than length L1 by the side of one end b In addition, the first flange 15 and the second flange 16 of the H-shaped steel 14 can be partially cut to a predetermined length to be manufactured as shown in FIG.

Further, the H-shaped steel 30 as shown in FIG. 2 (c) has a wide series, a medium series, and a narrow series, and has a height 31 (web longitudinal dimension and flange plate thickness) and a width 32 (flange longitudinal dimension). ) And the type (nominal dimensions) are determined, and the cross-sectional dimensions are height 31, width 32, plate thickness 33 of the upper flange (corresponding to the first elongated plate), and lower flange (second The size of the plate thickness 34 corresponding to the elongated plate), the thickness 35 of the web (corresponding to the third elongated plate 7) and R36 are defined.

A case where the H-shaped steel 30 is used as the member joint reinforcing metal fitting 1 at the member joint will be described. For example, the H-shaped steel 30 that does not interfere with the reinforcing bracket provided inside the beam-column joint 4 and is as large as possible is selected depending on the size of the beam-column joint 4 of the wooden frame structure 2 and the type and size of the bracket. The length in the depth direction 37 of the H-shaped steel 30 of the selected model (nominal dimension) is determined so as to be equal to or less than the dimension from the surface of the column-beam joint 4 to the reinforcement fitting installed in the columns 11 and 12. Then, the H-shaped steel 30 is cut with the determined length 37 in the depth direction. By further cutting the flange of the cut H-shaped steel 14 (corresponding to the first elongated plate and the second elongated plate), the member joint reinforcing bracket 1 can be manufactured. When the H-shaped steel 14 is used as the member joint reinforcing metal fitting 1, it can be easily and quickly manufactured at a very low cost.

Next, a wooden structure using the member joint reinforcing metal fitting 1 will be described. For example, as shown in FIG. 3 and FIG. 4, the wooden frame structure 2 using the member connection portion reinforcing bracket 1 uses only the member connection portion reinforcing bracket 1 for the column beam connection portion 4 of the wooden frame structure. Instead, as shown in FIG. 8 and FIG. 10, a member that is additionally processed to a metal fitting generally constructed in a wooden ramen structure, such as a configuration in which the member joint reinforcing metal fitting 1 is constructed together with the steel plate insertion drift pin joint 50. This is a structure for constructing the joint reinforcing metal fitting 1.

The construction of the steel plate insertion drift pin joint 50 is because it is very difficult to reinforce after construction because the holes and slits for metal fitting insertion are provided inside the pillar 11 and the beam 12, but the member joint reinforcement metal fitting 1 of the present invention is used. Since it can be applied to the column beam joint 4 from the surface side of the column 11 and the beam 12, it is easy both when building a wooden frame structure 2 and after it is built. It is inexpensive and can be installed with a short delivery time.

The wooden ramen structure 2 using the member joint reinforcing bracket 1 for the wooden ramen structure is a front shape of the two member joint reinforcing brackets 1 to be fitted over the column 11 and the beam 12 in the column beam joint 4. The member joint portion reinforcing metal fitting 1 is forcibly fitted and fixed to the two groove portions 13 formed by following the substantially H-shaped shape by appropriate means such as driving in with a hammer. The groove 13 is perforated so that the distance between the third elongated plate 7 or the web 17 of the two opposing member joint reinforcing metal fittings 1 is as wide as possible in the column beam joint 4. When the groove 13 is perforated so as to expand, the column beam joint 4 is rigidly joined.

Further, the length L2 from the junctions a and d with the third elongated plate 6 to the other end c side of the first elongated plate 5 or the second elongated plate 6 is set to the one end b side. When the length is the same as the length L1, it is suitable for the case where there is a sufficient range for fitting the member joint reinforcing bracket 1 in the column beam joint 4 of the wooden frame structure, while the length L2 is not longer than the R stop. In the case of the length, when the range in which the member-joint reinforcing bracket 1 is fitted in the column beam joint 4 having a wooden frame structure is narrow, or two member joint-strengthening brackets 1 at one column-beam joint 4 are used. It is suitable for the case where the gap is extended outward. Two third elongated plates 6 are fitted and fixed by arranging the two member joint reinforcing brackets 1 in the column beam joints 4 at one location so as to be arranged in the outward direction with a wide interval. For this reason, even when force is applied from the side due to an earthquake or wind, the beam-column joint of the wooden frame structure is firmly connected.

Next, the construction method of the wooden structure 8 will be described. For example, as shown in FIG. 13, the construction method 3 of the wooden frame structure using the member joint reinforcing metal fitting 1 is fitted over both the column 11 and the beam 13 in the column beam connection portion 4 of the wooden frame structure. Following the approximately H-shape, which is the front shape of the two opposing wood ramen structure member joint reinforcing metal fittings 1 to be tried, there are two locations where a drift pin or the like for fixing a general metal fitting can be avoided. The groove portion drilling step 21 for drilling the groove portion 13 with a cutting tool such as a router, the adhesive pouring step 22 for pouring the adhesive into the two groove portions 13 formed, and the groove portion 13 into which the adhesive has been poured A fitting fixing step 23 for forcibly fitting the member joint reinforcing metal fitting 1 by an appropriate means such as hammering. Then, since the adhesive protrudes from the groove 13 in the fitting and fixing step 23, the member joint reinforcing metal fitting 1 is covered with the adhesive protruding using the spatula, and the surface around the groove 13 is a flat surface. A surface planarization step 24 is provided.

The adhesive will be described. The adhesive is poured into the bottom of the groove 13 such as an adhesive such as epoxy, which is difficult to shrink before fitting the member joint reinforcing metal fitting 1. Next, when the adhesive is in a liquid state, the member joining portion reinforcing metal fitting 1 is fitted into the groove portion 13, and then the surface around the groove portion 13 is flattened with a spatula. With this adhesive, the fixation of the member joint reinforcing bracket 1 to the beam-column joint 4 is strengthened, whereby the beam-beam joint 4 can be rigidly joined. Thereby, although it is a large opening part of the wooden frame structure 2, it is possible to make an earthquake resistant structure, and when a force from the side is applied due to an earthquake or a wind load, the columns 11 and 12 of the column beam joint 4 The joint state becomes hard and rigid.

As the adhesive, a high-strength resin that does not shrink when it hardens is suitable, for example, an epoxy resin. Since it does not shrink when it hardens, there is no gap in the groove 13 after it hardens, and if the adhesive is filled without any gap, the member joint reinforcing bracket 1 will not move. Further, in the case of a resin that cures quickly, the column beam joint 4 can be fastened quickly and does not loosen by external force before it is solidified.

Next, as a test body of the beam-to-column joint 4 of the wooden frame structure 2, four sets of the laminated material width 120 mm × column column 240 mm × beam column 330 mm as shown in FIG. 5 are prepared, respectively, as shown in FIG. A test body in which a steel plate insertion drift pin joint 50 is carried out, and a member joint reinforcing metal fitting 1 cut from an H-shaped steel as shown in FIG. 1 is fitted and fixed, and an angle 40 as shown in FIG. A test specimen that is fixed and fixed, a form in which a band iron 41 as shown in FIG. 6B is fitted and fixed, and a form in which only a steel plate insertion drift pin joint 50 is provided in the beam-column joint 4 without additional reinforcement. The test was conducted.

The member joint reinforcing metal fitting 1 subjected to the test has a form as shown in FIG. 1, L1 is 74.5 mm, L2 is 15 mm, r is 13r, height 31 is 298 mm, and the plate thickness 35 of the web 17 is 35 mm. The plate thickness of 5.5 mm, the 1st flange, and the 2nd flange is 8 mm, and it cut and made from H-shaped steel.

As a test method, as shown in FIG. 5, the column 11 side is fixed sideways and fixed as a base, and the beam 12 side is set vertically and applied to the load point K on the beam 12 side by a hydraulic jack from the horizontal direction. The moments when the deformation angle θ of the beam-column joint 4 reached a predetermined value were compared. The deformation angle θ of the beam-column joint was 1/600 rad, 1/450 rad, 1/300 rad, 1/200 rad, 1/150 rad, and 1/100 rad, each of three positive and negative alternating forces.

The applied force is P, the dimension between the applied points from the column core is S, and the displacement values at the four corners of the column beam joint surface are the measured values of the displacement meter a (the left point on the front side in FIG. 5), Measured value of (distant side in FIG. 5 on the right side), measured value of displacement gauge C (left side of the back side in FIG. 5), measured value of displacement gauge D (right side of the back side in FIG. 5) And the distance between the displacement gauges is H. The average value of the measured values of the displacement meter A and the displacement meter C is δ1, and the average value of the measured values of the displacement meter B and the displacement meter D is δ2. As a result, the deformation angle θ of the beam-column joint is determined by (δ1−δ2) / H, and the moment is determined by (force P × S). In the example, the dimension S between the applied points from the column core was 1500 mm, and the distance H between the displacement gauges was 330 mm. In addition, model PS-10-B4 (maximum capacity 100 kN) manufactured by Maekawa Test Co., Ltd. was used as the test machine.

The test results are shown in Table 1. Each test body is a comparative test result of moments at the same deformation angle θ in four cases in which the steel sheet insertion drift pin joint 50 is performed and three types of metal fittings are additionally reinforced and not reinforced.

  Next, based on the test results of Table 1, the moment of the test specimen to be compared was set to 1.00 times, and the magnification of the moment of the specimen of the member joint reinforcing metal fitting 1 of the present invention was determined. 4 shows.

From Table 2, when the member joint reinforcing metal fitting 1 of the present invention is used, the joint moment when the deformation angle θ is 1/200 rad is 1.21 times stronger than when the band iron 41 is reinforced, and the deformation angle θ It is shown that the joint moment at 1/150 rad is 1.20 times stronger and the joint moment is 1.14 times stronger when the deformation angle θ is 1/120 rad.

From Table 3, when the member joint reinforcing metal fitting 1 of the present invention is used, the joint moment when the deformation angle θ is 1/200 rad is 1.12 times stronger than when the angle 40 is reinforced, and the deformation angle θ is It is shown that the joint moment when 1/150 rad is 1.14 times stronger and the joint moment when the deformation angle θ is 1/120 rad is 1.11 times stronger.

From Table 4, when using the member joint reinforcing metal fitting 1 of the present invention, the joint moment when the deformation angle θ is 1/200 rad is 2.14 times stronger than when no additional reinforcement is performed, and the deformation angle θ It is shown that the joint moment at 1/150 rad is 2.17 times stronger and the joint moment at the deformation angle θ is 1/120 rad is 2.05 times stronger.

From the above, the member joining portion reinforcing metal fitting 1 realizes a rigid joining that is twice or more compared to the conventional metal fittings, and a rigid joining that is 10% or more compared to the angle 40 and the band iron 41. Realized. As a result, it is possible to realize a rigid joint of the beam-column joint 4 of the wooden frame structure 2 that realizes a large opening as shown in FIG. 4, and the beam-column joint 4 is bent and deformed against an earthquake or wind load. We realized a difficult wooden ramen structure 2.

Next, it tested about the effect of the member junction part reinforcement metal fitting 1 of this invention. The conventional product is a steel sheet insertion drift pin fitting shown in FIGS. As shown in FIG. 9, the provided conventional product is provided with a slit 53 for the inserted steel sheet gusset plate 51 in one member 83a of the joint, and a hole 89b for inserting the drift pin 52 is formed. The inserted steel plate gusset plate 51 is provided with a hole 89c for inserting the drift pin 52 in the flat plate portion, and a nut 87 in the vertical direction on the flat plate. Bolt insertion holes 89a are formed in the other joining member 83b. Therefore, the joining member 83 a and the joining member 83 b are attached via the inserted steel sheet gusset plate 51.

It compared with the case where the member junction part reinforcement metal fitting 1 of this invention is added to this type. The test method was carried out using the same method as in Example 1. The result is shown in FIG. Further, from FIG. 16, the rigidity of the conventional iron metal A is set to 1 and Table 5 shows a comparison in the case.

  FIG. 16 and Table 5 show that the rigidity of the joint is increased when the member joint reinforcing metal fitting 1 of the present invention is added to the conventional hardware.

Next, the effect on the face material was tested. The member-joint reinforcing bracket 1 is fitted on the surface of the fastener 86 as shown in FIG. 13 in the face material wood structure shown in FIG. 12, and the position of the height of 1600 mm from the floor is hydraulic jacks from the side. Was pressurized. When the deformation angle is alternating between positive and negative alternating, load is applied toward the deformation angle of 1/600, 1/450, 1/300, 1/200, 1/150, 1/100, then 1/15 rad, and the maximum load is reached It was finished when the load dropped to 20% of the maximum load. The results are shown in Table 6.

From Table 6, as compared with the conventional bolt and nut fastener, the peeling of the face material is less likely to occur and the lift from the joint portion of the face material is less likely to occur.

Next, the relationship between flange length and bondability was investigated. As shown in FIG. 11, the beam or the column is fixed, and the member joint reinforcing metal fitting 1 is fitted with the flange on one side, and the flange on the other side is pulled at a speed of 25 mm per minute and compared at the maximum load. . The member joint reinforcing metal fitting 1 was made of H-shaped steel (400 × 200 × 8 × 13 × 20), and the fixed side corresponding to the beam or the column was E120-F330 bay pine cedar heterogeneous laminated wood. As the tester, model HZS-50-LB1 manufactured by Maekawa Tester Manufacturing Co., Ltd. was used. The result is shown in FIG.

From FIG. 15, it is shown that the symmetric flange has higher tensile force than the left and right non-objects, and the length of the flange of the H-shaped steel is 1 to 0.6 times as long as 1 as it is. It is shown that the tensile force is high in the length range.

DESCRIPTION OF SYMBOLS 1 Reinforcement metal fitting 2 Wooden frame structure 3 Construction method of wooden frame structure 4 Joint part 5 1st elongate plate 6 2nd elongate plate 7 3rd elongate plate 8 Wood structure 10 Column beam joint part 11 Column 12 Beam 13 Groove 14 H-shaped steel 15 First flange 16 Second flange 17 Web 21 Groove drilling process 22 Adhesive pouring process 23 Fitting and fixing process 24 Surface flattening process 30 H-shaped steel 31 Height 32 Width 33 Plate Thickness 34 Thickness 35 Thickness 36 R
37 Depth direction 40 Angle 41 Band iron 50 Steel plate insertion drift pin joint 51 Insert steel plate gusset plate 52 Drift pin 53 Slit 54 Hole 80 Face material wood structure 81 Face material joining part 82 Groove part 83a Joining member 83b Joining member 85 Face member 86 Fastening Tool 87 Nut 88 Bolt 89a Hole 89b Hole 89c Hole
91 First joint fitting
92 2nd joining metal fitting a joining part b one end c other end d joining part r R shape L1 length L2 length

  The present invention relates to a portion where a column or beam member joins in a frame structure such as a wooden frame structure that can realize a large opening without depending on a bearing wall, or a CLT (orthogonal laminated plate) or LVL (single plate). Laminated material), a wood structure member joining portion reinforcing bracket of a wood structure at a location where a member serving as a face material is joined, a frame structure using the member joining portion reinforcing bracket, or a wood structure of the face material structure The present invention also relates to a wooden structure reinforcing method in which the member joint reinforcing metal fitting is used for a frame structure or a face material structure.

The wooden frame structure, which is a frame structure, can realize a large opening and a large space, but there are no braces or bearing walls, so when a force is applied from the side due to an earthquake or wind, columns are connected at the beam-column joint. If the beam can rotate freely, it will become unstable as a building, so it is required to make the joint between the column and beam rigid so that it can resist earthquakes and wind. As a technique for rigid connection between a column and a beam, for example, Patent Document 1 discloses a structure in which a column member and a beam member in a wooden structure are connected by a metal plate that is bridged between the two. Disclosed is a structure for joining a column and a beam, in which a small cross section having a smaller cross-sectional area than the other portion is provided between a coupling portion of the metal plate to the column member and the coupling portion to the beam member. ing.

In addition, as a structure of the beam-to-column joint part of the wooden frame structure, Non-Patent Document 1 firstly arranges a large number of bending yield type metal fittings such as drift pins and bolts by using the finding surface of the member. As a type for transmitting a moment by the shear resistance, a structure of a steel sheet insertion drift pin joint 50 as shown in FIG. 7 is disclosed.

In the structure of the steel plate insertion drift pin joint 50 shown in FIG. 7, a vertical hole in which the flat insertion steel plate gusset plate 51 is inserted is drilled in the column 11, and a slit 53 in which the insertion steel plate gusset plate 51 is inserted in the beam 12. After the inserted steel plate gusset plate 51 is inserted into the column 11 and the beam 12, the plurality of drift pins 52 are inserted through the holes drilled in the column 11 and the holes 54 drilled in the inserted steel plate gusset plate 51. The plurality of drift pins 52 are inserted through the holes drilled in the beam 12 and the holes 54 drilled in the insertion steel plate gusset plate 51.

In addition, a structure in which a sheet board or a small square material is arranged or bonded in the width direction with the fiber directions thereof being substantially parallel to each other, is mainly laminated and bonded with the fiber directions being substantially perpendicular to each other to have a structure of three or more layers. In the case of using a CLT which is a material, a general material which is laminated and bonded mainly with a single plate having its fiber direction substantially parallel to each other, and a single plate whose fiber directions are orthogonal to each other, the total thickness of the orthogonal single plates is The LVLs of general materials that are less than 30% of the thickness of the product and the composition ratio of the number of the single plates is 30% or less are both laminated face materials having a thickness. When used as a wall or the like of a wooden structure, it is a common practice to fix the face materials together by fastening the joints between the face materials with bolts and nuts.

JP 2002-38591 A

"Architectural May issue, 123 pages", Architectural Technology Co., Ltd., April 17, 2014

  However, both the wooden structure of Patent Document 1 and the wooden structure of Non-Patent Document 1, which have a wooden ramen structure, do not reach a rigid rigid connection such as a steel frame or a reinforced concrete structure of a ramen structure, but a semi-rigid connection Therefore, when a force is applied from the side by a strong earthquake or strong wind, there is a problem that the angle between the column and the beam opens or closes at the column beam joint.

  In addition, the wooden structure of Patent Document 1 and the wooden structure of Non-Patent Document 1 must be formed by machining slits on beams and columns in advance, and can be constructed at the time of new construction. When it was necessary to reinforce, there was a problem that the construction was difficult and the reinforcement was difficult.

  Further, as for the fastening method of the joint portion of CLT or LVL, in the case of fastening with a bolt nut or a large screw, a rigid joining of the joint portion of the face material has been required in order to be strong against a large natural disaster.

  Therefore, an object of the present invention is to easily perform the construction even when a wooden structure is newly constructed or after construction, and to make a rigid joint of a column beam joint when force is applied from the side by an earthquake or wind. The present invention is to provide a wood structure member joint reinforcing metal fitting to be realized, a wooden structure using the member joint reinforcing metal fitting, and a wooden structure reinforcing method using the member joint reinforcing metal fitting for the wooden structure. .

In order to solve the above-mentioned problem, the construction method 3 of the wooden ramen structure according to claim 1 is added to the existing first joint fitting 91 in the member joint portion 4 of the wooden ramen structure 2, It is a construction method 3 of a wooden ramen structure for fitting and fixing the reinforcing metal fitting 1 as the second joint metal fitting 92 to the groove 13 formed between the members,
The first elongate plate 5 and the second elongate plate 6, which are parallel to each other, and the first elongate plate 5 between the first elongate plate 5 and the second elongate plate 6. A third elongate plate 7 fixedly arranged in a vertical direction with respect to the plate 5 and the second elongate plate 6, and the third elongate plate 7 and the first elongate plate 5 and the second elongated plate 6, following the shape formed by the reinforcing metal fitting 1 that forms the corner shape of the R shape on both sides of the joint portion , the first member is formed over the two members to be joined. The direction of the elongated plate 5 and the second elongated plate 6 is parallel to the direction of the joint surface between the members, and the direction of the third elongated plate 7 is relative to the direction of the joint surface between the members. Drilling groove 13 to be vertical A groove portion drilling step 21; an adhesive pouring step 22 for pouring an adhesive into the formed groove portion 13; and a fitting for forcibly fitting the reinforcing metal fitting 1 into the groove portion 13 into which an adhesive has been poured by an appropriate means. And a fixing step 23.

Construction Method 3 of Timber Frame structure according to claim 1, easily construction against wooden rigid frame structure 2 wooden rigid frame structure 2 or already set at the time of new construction, the member bonding portion of Timber Frame structure 2 There is an effect that it is possible to increase the rigidity of the joint.

Further, since it can be further reinforced in addition to the conventional reinforcement, the joint structure of each member of the wooden structure 8 such as a wooden frame structure such as a wooden ramen structure and a CLT or LVL face material structure is further provided than the conventional reinforcement. The rigid joining can be greatly increased, and the effect of significantly increasing the rigid joining of the member joint portion 4 when a force is applied from the side due to an earthquake or wind can be achieved.

In addition, since construction can be performed from the surface of pillars, beams, or face materials, not only for new construction, but also for existing wooden framed frame structures and existing CLT and LVL face structure structures. Even for this, it is possible to easily perform additional construction at a low cost with a short delivery time.

Further, since the reinforcing metal fitting 1 is a reinforcing metal fitting having a simple configuration, there is an effect that it can be manufactured inexpensively and easily with a short delivery time.

Further, even when H-shaped steel is applied as the reinforcing metal fitting 1, there is an effect that the rigid joining can be realized.

It is a perspective view of the member junction part reinforcement metal fitting of the wooden structure of this invention. BRIEF DESCRIPTION OF THE DRAWINGS It is explanatory drawing of the relationship between the member joining part reinforcement metal fittings of the wooden structure of this invention, and H-shaped steel, (a) is a front view of the cross section of H-shaped steel, (b) is a front view of the member joining part reinforcement metal fittings of a wooden structure (C) is a perspective view of the H-shaped steel before cutting. It is the perspective view which fitted and fixed the member junction part reinforcement metal fitting of a wooden structure to the column beam junction part. It is a front view of the wooden frame structure which used the member joining part reinforcement metal fitting for the column beam etc. of the opening part of a wooden frame structure. It is explanatory drawing of the test method showing the method of a bending moment test. It is a perspective view of the comparison object of a bending moment test, (a) is a perspective view of the member junction part reinforcement metal fitting which uses an angle, (b) is a perspective view of the member junction part reinforcement metal fitting which uses a band iron. It is a perspective view which shows the state before joining of steel plate insertion drift pin joining in a wooden frame structure. It is the perspective view which fitted and fixed the member junction part reinforcement metal fitting of this invention to the wooden frame structure which joined the steel plate insertion drift pin. It is a general | schematic perspective view of the wooden frame structure using the steel plate insertion drift pin joining metal fitting. It is a general | schematic perspective view of the wooden frame structure which uses the member junction part reinforcement metal fitting of this invention for a steel plate insertion drift pin joint metal fitting. It is explanatory drawing of the tension test method of a member junction part reinforcement metal fitting. It is explanatory drawing of the face material wood structure which uses a fastener. It is a general | schematic perspective view of the face material wood structure which uses the member junction part reinforcement metal fitting of this invention for a fastener. It is a flowchart of the construction method of the wooden frame structure using the member junction part reinforcement metal fitting for wooden frame structures. It is a figure of the test result of the flange length and rigidity of a member junction part reinforcement metal fitting of a wooden structure. It is the figure which compared the yield strength at the time of adding the member junction part reinforcement metal fitting of a wooden structure to the conventional hardware only and the case of a conventional hardware.

As shown in FIG. 1, a wood structure member joint reinforcing bracket 1 according to the present invention is a reinforcing metal fitting fitted and fixed to a groove 13 formed between members in a wood structure member joint 4. Two elongated plates, a first elongated plate 5 and a second elongated plate 6 that are parallel to each other, and the first elongated plate between the first elongated plate 5 and the second elongated plate 6. And a third elongated plate 7 fixedly arranged in the vertical direction with respect to the second elongated plate, respectively, and the third elongated plate 7 and the first elongated plate 5 or the second elongated plate 7. When the corner shape of the joint with the elongated plate 6 is formed in an R shape, the first and second elongated plates 5 and 6 have the same length, and the length is 1, 3 of the elongated plate 7 is set to the first or second length. The plate ratio A = the length of the third elongated plate 7 / (the length of the first or second elongated plate length 5, 6) is 1 to 2 times the length of the elongated plates 5, 6 In the case where a shape having a thickness is used as a reference shape, the length of the first and / or second elongated plates 5 and 6 is set to a plate ratio B without changing the length of the third elongated plate 7. = (Set first or second elongated plate length 5, 6) / (first or second elongated plate length 5, 6 in the reference form) is 1 to 0.6 times longer Set.

An R-shape r is formed at the corners a and d formed at the joint between the third elongated plate 7 and the first elongated plate 5 or the second elongated plate 6. The R-shaped portion is manufactured integrally with the first to third elongated plates 5, 6 and 7 by rolling or casting, and the corners after the first to third elongated plates 5, 6 and 7 are completed. It is not formed later by meat welding. The first to third elongated plates 5, 6 and 7 and the R-shaped portion at the corner are integrally formed, so that the joint 81 between the column beam joint 4 or the face members 85 of the wooden structure. A high rigidity of the joint portion can be ensured when the member joint portion reinforcing metal fitting 1 is fitted.

The position a where the third elongated plate 7 and the first elongated plate 5 are fixed in the vertical direction, and the third elongated plate 7 and the second elongated plate 6 are fixed in the vertical direction. R-shape r is formed at each position d. By forming the R shape r, the positional relationship between the third elongated plate 7 and the first elongated plate 5 or the second elongated plate 6 is less likely to change due to rotation or the like. The orthogonal form of the third elongated plate fixed in the direction and the first or second elongated plate can be firmly maintained. Thereby, even when a force is applied from the side due to an earthquake or wind, the column beam joint or the face material joint of the wooden structure is firmly joined.

Further, the member joining reinforcing metal fitting 1 has a ratio of the length of the first or second elongated plate 5, 6 to the length of the third elongated plate 7 in the first, second and third elongated plates. Plate ratio C = (length of first or second elongated plate 5 or 6 to be set) / in the case of a reference form with a plate ratio A = 1 in which the lengths of the plate-like plates 5, 6, 7 are substantially the same The third elongate plate 7 is 1 to 0.6 times, or the ratio of the length of the third elongate plate 7 to the length of the first or second elongate plate 5 or 6 is 2. In the case of the reference form having a plate ratio A = 2, the form D is 0.5 to 0.3 times the plate ratio C.

Further, the member joint reinforcing metal fitting 1 has a form E in which the respective ends of the third elongated plate 7 are connected to the center positions of the first elongated plate 5 and the second elongated plate 6.

Further, the member joint reinforcing metal fitting 1 has a form F in which the first elongated plate 5 and the second elongated plate 6 are disposed so as to face each other across the third elongated plate 7. .

When the form of the member joint reinforcing metal fitting 1 is H-shaped, it is a form provided with all of the above forms D, E and F, and when the form of the member joint reinforcing metal fitting 1 is substantially U-shaped There are forms with D and Form F. Not only the H-shaped and substantially U-shaped member joint reinforcing metal fittings 1, but all member joint reinforcing metal fittings 1 include a third elongated plate 7 and first or second elongated plates 5, 6. It is necessary to form an R shape at all of the four corners, and the R shape remains even when the first or second elongated plates 5 and 6 are cut.

The application target of the member joint reinforcement metal fitting 1 is a building having a frame structure such as a wooden ramen structure, a building having a face material structure such as CLT (orthogonal laminated board) or LVL (single-plate laminated material), and As buildings, large-scale wooden structures such as private houses, apartment houses, and school buildings are targeted, so the sizes of columns and beams of wooden buildings are different. Depending on the form of the joint portion or the thickness of the face material, the width, length or thickness of the first to third elongated plates 5, 6, 7 of the member joint portion reinforcing metal fitting 1, the dimensions such as the R shape, The thickness is set as long as possible and is appropriately set to have a large R shape.

Next, since the form of the member joint reinforcing metal fitting 1 includes an H-shape, it will be described that H-shaped steel can be used as the member joint reinforcing metal fitting 1. As shown in FIG. 2A, the first elongated plate 5, the second elongated plate 6 and the third elongated plate 7 which are constituent elements of the member joint reinforcing metal fitting 1 are respectively H-shaped steels. 14 first flanges 15, second flanges 16, and webs 17. Therefore, the H-shaped steel 14 can be manufactured by cutting at a predetermined thickness of the member joint reinforcing metal fitting 1. Or when making it substantially U-shaped, the H-shaped steel 14 is cut | disconnected by the predetermined thickness of the member junction part reinforcement metal fitting 1, and length L2 by the side of other end is made shorter than length L1 by the side of one end b In addition, the first flange 15 and the second flange 16 of the H-shaped steel 14 can be partially cut to a predetermined length to be manufactured as shown in FIG.

Further, the H-shaped steel 30 as shown in FIG. 2 (c) has a wide series, a medium series, and a narrow series, and has a height 31 (web longitudinal dimension and flange plate thickness) and a width 32 (flange longitudinal dimension). ) And the type (nominal dimensions) are determined, and the cross-sectional dimensions are height 31, width 32, plate thickness 33 of the upper flange (corresponding to the first elongated plate), and lower flange (second The size of the plate thickness 34 corresponding to the elongated plate), the thickness 35 of the web (corresponding to the third elongated plate 7) and R36 are defined.

A case where the H-shaped steel 30 is used as the member joint reinforcing metal fitting 1 at the member joint will be described. For example, the H-shaped steel 30 that does not interfere with the reinforcing bracket provided inside the beam-column joint 4 and is as large as possible is selected depending on the size of the beam-column joint 4 of the wooden frame structure 2 and the type and size of the bracket. The length in the depth direction 37 of the H-shaped steel 30 of the selected model (nominal dimension) is determined so as to be equal to or less than the dimension from the surface of the column-beam joint 4 to the reinforcement fitting installed in the columns 11 and 12. Then, the H-shaped steel 30 is cut with the determined length 37 in the depth direction. By further cutting the flange of the cut H-shaped steel 14 (corresponding to the first elongated plate and the second elongated plate), the member joint reinforcing bracket 1 can be manufactured. When the H-shaped steel 14 is used as the member joint reinforcing metal fitting 1, it can be easily and quickly manufactured at a very low cost.

Next, a wooden structure using the member joint reinforcing metal fitting 1 will be described. For example, as shown in FIG. 3 and FIG. 4, the wooden frame structure 2 using the member connection portion reinforcing bracket 1 uses only the member connection portion reinforcing bracket 1 for the column beam connection portion 4 of the wooden frame structure. Instead, as shown in FIG. 8 and FIG. 10, a member that is additionally processed to a metal fitting generally constructed in a wooden ramen structure, such as a configuration in which the member joint reinforcing metal fitting 1 is constructed together with the steel plate insertion drift pin joint 50. This is a structure for constructing the joint reinforcing metal fitting 1.

The construction of the steel plate insertion drift pin joint 50 is because it is very difficult to reinforce after construction because the holes and slits for metal fitting insertion are provided inside the pillar 11 and the beam 12, but the member joint reinforcement metal fitting 1 of the present invention is used. Since it can be applied to the column beam joint 4 from the surface side of the column 11 and the beam 12, it is easy both when building a wooden frame structure 2 and after it is built. It is inexpensive and can be installed with a short delivery time.

The wooden ramen structure 2 using the member joint reinforcing bracket 1 for the wooden ramen structure is a front shape of the two member joint reinforcing brackets 1 to be fitted over the column 11 and the beam 12 in the column beam joint 4. The member joint portion reinforcing metal fitting 1 is forcibly fitted and fixed to the two groove portions 13 formed by following the substantially H-shaped shape by appropriate means such as driving in with a hammer. The groove 13 is perforated so that the distance between the third elongated plate 7 or the web 17 of the two opposing member joint reinforcing metal fittings 1 is as wide as possible in the column beam joint 4. When the groove 13 is perforated so as to expand, the column beam joint 4 is rigidly joined.

Further, the length L2 from the junctions a and d with the third elongated plate 6 to the other end c side of the first elongated plate 5 or the second elongated plate 6 is set to the one end b side. When the length is the same as the length L1, it is suitable for the case where there is a sufficient range for fitting the member joint reinforcing bracket 1 in the column beam joint 4 of the wooden frame structure, while the length L2 is not longer than the R stop. In the case of the length, when the range in which the member-joint reinforcing bracket 1 is fitted in the column beam joint 4 having a wooden frame structure is narrow, or two member joint-strengthening brackets 1 at one column-beam joint 4 are used. It is suitable for the case where the gap is extended outward. Two third elongated plates 6 are fitted and fixed by arranging the two member joint reinforcing brackets 1 in the column beam joints 4 at one location so as to be arranged in the outward direction with a wide interval. For this reason, even when force is applied from the side due to an earthquake or wind, the beam-column joint of the wooden frame structure is firmly connected.

Next, the construction method of the wooden structure 8 will be described. For example, as shown in FIG. 13, the construction method 3 of the wooden frame structure using the member joint reinforcing metal fitting 1 is fitted over both the column 11 and the beam 13 in the column beam connection portion 4 of the wooden frame structure. Following the approximately H-shape, which is the front shape of the two opposing wood ramen structure member joint reinforcing metal fittings 1 to be tried, there are two locations where a drift pin or the like for fixing a general metal fitting can be avoided. The groove portion drilling step 21 for drilling the groove portion 13 with a cutting tool such as a router, the adhesive pouring step 22 for pouring the adhesive into the two groove portions 13 formed, and the groove portion 13 into which the adhesive has been poured A fitting fixing step 23 for forcibly fitting the member joint reinforcing metal fitting 1 by an appropriate means such as hammering. Then, since the adhesive protrudes from the groove 13 in the fitting and fixing step 23, the member joint reinforcing metal fitting 1 is covered with the adhesive protruding using the spatula, and the surface around the groove 13 is a flat surface. A surface planarization step 24 is provided.

The adhesive will be described. The adhesive is poured into the bottom of the groove 13 such as an adhesive such as epoxy, which is difficult to shrink before fitting the member joint reinforcing metal fitting 1. Next, when the adhesive is in a liquid state, the member joining portion reinforcing metal fitting 1 is fitted into the groove portion 13, and then the surface around the groove portion 13 is flattened with a spatula. With this adhesive, the fixation of the member joint reinforcing bracket 1 to the beam-column joint 4 is strengthened, whereby the beam-beam joint 4 can be rigidly joined. Thereby, although it is a large opening part of the wooden frame structure 2, it is possible to make an earthquake resistant structure, and when a force from the side is applied due to an earthquake or a wind load, the columns 11 and 12 of the column beam joint 4 The joint state becomes hard and rigid.

As the adhesive, a high-strength resin that does not shrink when it hardens is suitable, for example, an epoxy resin. Since it does not shrink when it hardens, there is no gap in the groove 13 after it hardens, and if the adhesive is filled without any gap, the member joint reinforcing bracket 1 will not move. Further, in the case of a resin that cures quickly, the column beam joint 4 can be fastened quickly and does not loosen by external force before it is solidified.

Next, as a test body of the beam-to-column joint 4 of the wooden frame structure 2, four sets of the laminated material width 120 mm × column column 240 mm × beam column 330 mm as shown in FIG. 5 are prepared, respectively, as shown in FIG. A test body in which a steel plate insertion drift pin joint 50 is carried out, and a member joint reinforcing metal fitting 1 cut from an H-shaped steel as shown in FIG. 1 is fitted and fixed, and an angle 40 as shown in FIG. A test specimen that is fixed and fixed, a form in which a band iron 41 as shown in FIG. 6B is fitted and fixed, and a form in which only a steel plate insertion drift pin joint 50 is provided in the beam-column joint 4 without additional reinforcement. The test was conducted.

The member joint reinforcing metal fitting 1 subjected to the test has a form as shown in FIG. 1, L1 is 74.5 mm, L2 is 15 mm, r is 13r, height 31 is 298 mm, and the plate thickness 35 of the web 17 is 35 mm. The plate thickness of 5.5 mm, the 1st flange, and the 2nd flange is 8 mm, and it cut and made from H-shaped steel.

As a test method, as shown in FIG. 5, the column 11 side is fixed sideways and fixed as a base, and the beam 12 side is set vertically and applied to the load point K on the beam 12 side by a hydraulic jack from the horizontal direction. The moments when the deformation angle θ of the beam-column joint 4 reached a predetermined value were compared. The deformation angle θ of the beam-column joint was 1/600 rad, 1/450 rad, 1/300 rad, 1/200 rad, 1/150 rad, and 1/100 rad, each of three positive and negative alternating forces.

The applied force is P, the dimension between the applied points from the column core is S, and the displacement values at the four corners of the column beam joint surface are the measured values of the displacement meter a (the left point on the front side in FIG. 5), Measured value of (distant side in FIG. 5 on the right side), measured value of displacement gauge C (left side of the back side in FIG. 5), measured value of displacement gauge D (right side of the back side in FIG. 5) And the distance between the displacement gauges is H. The average value of the measured values of the displacement meter A and the displacement meter C is δ1, and the average value of the measured values of the displacement meter B and the displacement meter D is δ2. As a result, the deformation angle θ of the beam-column joint is determined by (δ1−δ2) / H, and the moment is determined by (force P × S). In the example, the dimension S between the applied points from the column core was 1500 mm, and the distance H between the displacement gauges was 330 mm. In addition, model PS-10-B4 (maximum capacity 100 kN) manufactured by Maekawa Test Co., Ltd. was used as the test machine.

The test results are shown in Table 1. Each test body is a comparative test result of moments at the same deformation angle θ in four cases in which the steel sheet insertion drift pin joint 50 is performed and three types of metal fittings are additionally reinforced and not reinforced.

  Next, based on the test results of Table 1, the moment of the test specimen to be compared was set to 1.00 times, and the magnification of the moment of the specimen of the member joint reinforcing metal fitting 1 of the present invention was determined. 4 shows.

From Table 2, when the member joint reinforcing metal fitting 1 of the present invention is used, the joint moment when the deformation angle θ is 1/200 rad is 1.21 times stronger than when the band iron 41 is reinforced, and the deformation angle θ It is shown that the joint moment at 1/150 rad is 1.20 times stronger and the joint moment is 1.14 times stronger when the deformation angle θ is 1/120 rad.

From Table 3, when the member joint reinforcing metal fitting 1 of the present invention is used, the joint moment when the deformation angle θ is 1/200 rad is 1.12 times stronger than when the angle 40 is reinforced, and the deformation angle θ is It is shown that the joint moment when 1/150 rad is 1.14 times stronger and the joint moment when the deformation angle θ is 1/120 rad is 1.11 times stronger.

From Table 4, when using the member joint reinforcing metal fitting 1 of the present invention, the joint moment when the deformation angle θ is 1/200 rad is 2.14 times stronger than when no additional reinforcement is performed, and the deformation angle θ It is shown that the joint moment at 1/150 rad is 2.17 times stronger and the joint moment at the deformation angle θ is 1/120 rad is 2.05 times stronger.

From the above, the member joining portion reinforcing metal fitting 1 realizes a rigid joining that is twice or more compared to the conventional metal fittings, and a rigid joining that is 10% or more compared to the angle 40 and the band iron 41. Realized. As a result, it is possible to realize a rigid joint of the beam-column joint 4 of the wooden frame structure 2 that realizes a large opening as shown in FIG. 4, and the beam-column joint 4 is bent and deformed against an earthquake or wind load. We realized a difficult wooden ramen structure 2.

Next, it tested about the effect of the member junction part reinforcement metal fitting 1 of this invention. The conventional product is a steel sheet insertion drift pin fitting shown in FIGS. As shown in FIG. 9, the provided conventional product is provided with a slit 53 for the inserted steel sheet gusset plate 51 in one member 83a of the joint, and a hole 89b for inserting the drift pin 52 is formed. The inserted steel plate gusset plate 51 is provided with a hole 89c for inserting the drift pin 52 in the flat plate portion, and a nut 87 in the vertical direction on the flat plate. Bolt insertion holes 89a are formed in the other joining member 83b. Therefore, the joining member 83 a and the joining member 83 b are attached via the inserted steel sheet gusset plate 51.

It compared with the case where the member junction part reinforcement metal fitting 1 of this invention is added to this type. The test method was carried out using the same method as in Example 1. The result is shown in FIG. Further, from FIG. 16, the rigidity of the conventional iron metal A is set to 1 and Table 5 shows a comparison in the case.

  FIG. 16 and Table 5 show that the rigidity of the joint is increased when the member joint reinforcing metal fitting 1 of the present invention is added to the conventional hardware.

Next, the effect on the face material was tested. The member-joint reinforcing bracket 1 is fitted on the surface of the fastener 86 as shown in FIG. 13 in the face material wood structure shown in FIG. 12, and the position of the height of 1600 mm from the floor is hydraulic jacks from the side. Was pressurized. When the deformation angle is alternating between positive and negative alternating, load is applied toward the deformation angle of 1/600, 1/450, 1/300, 1/200, 1/150, 1/100, then 1/15 rad, and the maximum load is reached It was finished when the load dropped to 20% of the maximum load. The results are shown in Table 6.

From Table 6, as compared with the conventional bolt and nut fastener, the peeling of the face material is less likely to occur and the lift from the joint portion of the face material is less likely to occur.

Next, the relationship between flange length and bondability was investigated. As shown in FIG. 11, the beam or the column is fixed, and the member joint reinforcing metal fitting 1 is fitted with the flange on one side, and the flange on the other side is pulled at a speed of 25 mm per minute and compared at the maximum load. . The member joint reinforcing metal fitting 1 was made of H-shaped steel (400 × 200 × 8 × 13 × 20), and the fixed side corresponding to the beam or the column was E120-F330 bay pine cedar heterogeneous laminated wood. As the tester, model HZS-50-LB1 manufactured by Maekawa Tester Manufacturing Co., Ltd. was used. The result is shown in FIG.

From FIG. 15, it is shown that the symmetric flange has higher tensile force than the left and right non-objects, and the length of the flange of the H-shaped steel is 1 to 0.6 times as long as 1 as it is. It is shown that the tensile force is high in the length range.

DESCRIPTION OF SYMBOLS 1 Reinforcement metal fitting 2 Wooden frame structure 3 Construction method of wooden frame structure 4 Joint part 5 1st elongate plate 6 2nd elongate plate 7 3rd elongate plate 8 Wood structure 10 Column beam joint part 11 Column 12 Beam 13 Groove 14 H-shaped steel 15 First flange 16 Second flange 17 Web 21 Groove drilling process 22 Adhesive pouring process 23 Fitting and fixing process 24 Surface flattening process 30 H-shaped steel 31 Height 32 Width 33 Plate Thickness 34 Thickness 35 Thickness 36 R
37 Depth direction 40 Angle 41 Band iron 50 Steel plate insertion drift pin joint 51 Insert steel plate gusset plate 52 Drift pin 53 Slit 54 Hole 80 Face material wood structure 81 Face material joining part 82 Groove part 83a Joining member 83b Joining member 85 Face member 86 Fastening Tool 87 Nut 88 Bolt 89a Hole 89b Hole 89c Hole 91 First joint bracket 92 Second joint bracket a Joint portion b One end c The other end d Joint portion r R shape L1 Length L2 Length

Claims (6)

Reinforcing metal fitting that fits and secures into a groove formed between members in a member joint portion of a wooden structure,
Two elongated plates, a first elongated plate and a second elongated plate in parallel;
A third elongate plate fixedly arranged in a vertical direction with respect to the first elongate plate and the second elongate plate between the first elongate plate and the second elongate plate; Prepared,
Forming a corner shape at the junction between the third elongated plate and the first elongated plate or the second elongated plate into an R shape;
When the lengths of the first and second elongated plates are the same and the length is 1, the length of the third elongated plate is set to the length of the first or second elongated plate. On the other hand, when the form having a length of 1 to 2 times with the plate ratio A = third elongated plate length / (first or second elongated plate length) is used as the reference form, the first 3 without changing the length of the three elongated plates, the length of the first and / or second elongated plate is set to the plate ratio B = (set first or second elongated plate length) / A member-joining reinforcing metal fitting, which is set to a length of 1 to 0.6 times (the length of the first or second elongated plate in the reference form).   Plate ratio A in which the ratio of the length of the first or second elongated plate to the length of the third elongated plate is substantially the same as the length of the first, second and third elongated plates = 1 in the case of the reference form, the plate ratio C = (first or second elongated plate length to be set) / the third elongated plate is 1 to 0.6 times, or the first or first In the case of the reference form having a plate ratio A = 2 in which the ratio of the length of the third elongated plate to the length of the elongated plate 2 is doubled, the plate ratio C is 0.5 to 0.3. The member joint reinforcing bracket according to claim 1, wherein the member joining reinforcing bracket is doubled.   3. The member joint reinforcing bracket according to claim 1, wherein each end of the third elongated plate is connected to a central position of each of the first elongated plate and the second elongated plate. .   The first elongate plate and the second elongate plate are disposed so as to face each other across the third elongate plate. Member joint reinforcement metal fittings.   The member joint portion reinforcing member according to any one of claims 1 to 4 is fitted over the two members to be joined in the member joint portion of the wooden structure of the shaft structure or the face material structure, and the joint between the members A woody structure characterized in that a first elongated plate and a second elongated plate are fitted in parallel to the surface direction. In the member joint portion of the wooden structure of the shaft structure or the face material structure, the direction of the first elongated plate and the second elongated plate is parallel to the direction of the joint surface between the members over the two members to be joined. A groove part drilling step for drilling a groove part according to the shape formed by the member joint reinforcing metal fitting according to any one of claims 1 to 4,
An adhesive pouring step for pouring the adhesive into the formed groove,
A fitting and fixing step of forcibly fitting the member joint reinforcing metal fittings into the grooves into which the adhesive has been poured by appropriate means.

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