JP5398933B1 - Load-bearing panel structure - Google Patents

Abstract

[PROBLEMS] To improve seismic performance by applying proof strength together with the main body steel frame part against horizontal force applied during an earthquake, applied to a wall of a building structure, and even if a wooden panel burns in the event of a fire It has a mechanism that can reduce the thermal influence on the structure by minimizing the connection area with the main body steel so that the steel part can maintain the strength of the structure. .
A wooden load-bearing panel 21 is arranged in a rectangular frame 13 composed of a steel column 11 and a beam 12, and the load-bearing panel 21 is spaced from the beam 12 at the upper and lower ends, and on both sides thereof. The end is separated from the column 11 and is connected to the column 11 and / or the beam 12 via the connection fitting 3 provided at each corner or in the vicinity thereof.
[Selection] Figure 1

Description

  The present invention is applied to a wall of a building structure, improves the seismic performance by bearing the proof stress together with the steel frame part against the horizontal force applied during an earthquake, and even if the wooden panel burns in the event of a fire The present invention relates to a wooden load-bearing panel structure that reduces a thermal influence on a structure so that a main body steel frame portion can maintain strength as a structure.

  2. Description of the Related Art Conventionally, a load bearing wall has been proposed that is applied to a wall of a building structure and improves the earthquake resistance by bearing the load resistance against a horizontal force that is applied in association with an earthquake. As the most typical bearing wall structure, a structure in which two brace members are incorporated in a rectangular frame composed of columns and beams so as to cross each other along a diagonal line is widely known (for example, (See Patent Documents 1 and 2.) In such a load-bearing wall, the horizontal force applied to the building structure is absorbed by the brace material being stretched and plastically deformed, so that damage to the frame consisting of columns and beams and the surrounding structural material is suppressed. It has become.

  In addition to such a method using brace material, for example, as shown in Patent Document 3, a technique is also proposed in which a steel panel is incorporated in a space surrounded by columns and beams and these are integrally joined to each other via a joining material. Has been. As a result, when a horizontal force due to an earthquake is applied, the steel panel can be yielded before the columns and beams, so that the seismic performance can be improved.

JP 2004-324133 A JP 10-31415 A JP-A-9-67939

  By the way, none of the disclosure techniques of Patent Documents 1 to 3 described above are forms using wood. In particular, by using wood as a structural material, it is possible to effectively use domestically produced wood, leading to the activation of domestic forestry. Above all, by using domestically produced cedar wood, it can contribute to mass consumption of thinned wood. In addition, it is possible to increase the number of standing rice for timber consumption by utilizing timber for a wall that occupies a large area in a building structure. And if wood can be utilized as a wall, compared with the indication technique of patent documents 1-3 which uses a brace material and a steel frame panel, workability can also be improved and a construction period shortening can also be anticipated. Furthermore, since the proof stress is shared with the horizontal force applied during an earthquake together with the main body steel frame portion, it is possible to make the main body steel member smaller than general. A similar effect can be expected for a steel panel, but since it is made of wood, the weight of the entire building structure can be greatly reduced, and the construction cost can be reduced. In addition to this, it is possible to respond to the desire to reconstruct the wooden architecture culture and tradition unique to Japan.

  When such a wall is made of wood, it is naturally required to exhibit earthquake resistance as if braces or steel panels were used when a horizontal force due to an earthquake was applied. However, no technology that can exhibit the seismic resistance generally required in conventional wooden walls has been proposed. In addition to this, when the wall body is made of wood, fire resistance against fire must be fully considered. In particular, in the case of a high-rise building structure, if the wooden wall body is temporarily burned with a fire, and the building structure collapses, it will cause enormous damage. On the other hand, even if the wooden wall burns with fire, no technology has been proposed to prevent the collapse of the building structure by reducing the thermal effect on the steel frame.

  Therefore, the present invention has been devised in view of the above-mentioned problems, and the object of the present invention is to be applied to the wall of a building structure and bears the proof strength against the horizontal force loaded with an earthquake. Provides a wooden load-bearing panel structure that can maintain sufficient strength as a structural body by suppressing heat conduction to the steel frame even when the wooden panel burns in the event of a fire. There is to do.

  In the load-bearing panel structure according to claim 1, a wooden load-bearing panel is disposed in a rectangular frame made of steel columns and beams, and the load-bearing panel has an upper end and a lower end separated from the beam. The both side ends are separated from the pillar, and are connected to the pillar and / or the beam via connecting fittings provided at corners or in the vicinity thereof.

  The load-bearing panel structure according to claim 2 is the invention according to claim 1, wherein the connecting metal fitting is inserted in each corner of the load-bearing panel or an insertion plate inserted in the vicinity thereof, and the load-bearing in the inserted state of the insert plate. A first connecting plate extending outward from the panel, and the pillar and the beam have a second connecting plate extending toward the inside of the frame, and the second connecting plate and the above The shaft is inserted into the first connecting plate so as to be connected to the connecting metal fitting.

  The load-bearing panel structure according to claim 3 is the invention according to claim 2, in which the connecting metal fitting includes a side plate portion that is brought into contact with a side end of the load-bearing panel so that an inner surface thereof is vertical when the insertion plate is inserted. And the outer surface of the side plate portion is provided with the first connecting plate standing and inclined toward the standing direction of the first connecting plate, and the side plate portion and the column or beam There are further two plate-shaped compressed metal objects sandwiched between them, and the compressed metal objects are disposed on both sides of the second connecting plate and urged toward the second connecting plate. The inclined surface formed on the upper surface is brought into contact with the outer surface of the side plate portion.

  According to a fourth aspect of the present invention, in the invention according to the third aspect, when the outer surface of the side plate portion shifts in a direction away from the frame in accordance with the drying shrinkage of the strength panel, the compression hardware is provided. Is shifted in the direction approaching the second connecting plate.

  The load-bearing panel structure according to claim 5 is the invention according to any one of claims 2 to 4, wherein the shaft is provided so as to sandwich the inserted first connecting plate and the second connecting plate. An annular ring-shaped pressing member is provided.

  The load-bearing panel structure according to claim 6 is the invention according to any one of claims 2 to 5, wherein the first connecting plate is extended in the extending direction toward the outside. A long groove or a first long hole for inserting the shaft is provided.

  The load-bearing panel structure according to claim 7 is the invention according to any one of claims 2 to 6, wherein the second connecting plate is formed in the long axis direction of the column when formed on the column. In the case of being formed in the beam, it is extended in the long axis direction of the beam and has a second long hole for inserting the shaft.

  The load-bearing panel structure according to claim 8 is the invention according to any one of claims 2 to 7, wherein the load-bearing panel has a compressive force mainly based on the horizontal force when a horizontal force is applied. The column is loaded in a diagonal direction through the connection fitting, and when the horizontal force is loaded, the column is mainly loaded with a tensile force based on the horizontal force.

  The load-bearing panel structure according to claim 9 is the invention according to any one of claims 2 to 8, wherein the first connecting plate and the second connecting plate are configured to have an L-shaped cross section in a front view. The inner side is inscribed in the corner of the load-bearing panel, and the outer side is inscribed in the column and the beam.

  The load-bearing panel structure according to claim 10 is the invention according to any one of claims 2 to 9, wherein the load-bearing panel further includes an anti-buckling plate extending outward, and the buckling-preventing plate is extended. The protruding end is in contact with the frame.

  The load-bearing panel structure according to claim 11 is the invention according to any one of claims 2 to 10, wherein the load-bearing panel is a laminated panel in which a plurality of wooden thin plates are laminated.

  According to the present invention having the above-described configuration, the compressive force applied by an earthquake can be borne by a wooden load-bearing panel, and the tensile force loaded by an earthquake can be borne by a column. That is, it is possible to effectively extract the advantages of steel that is strong in tensile force and wood that is strong in compressive force, and provide an earthquake-resistant system that complements each other. Thereby, since it can oppose with a strong material with respect to each stress transmission mode, it becomes possible to improve seismic performance more.

  Moreover, in the load-bearing panel structure to which the present invention is applied, the load of the building structure is supported by the pillars, but even when the wooden load-bearing panel itself is burned by a fire due to an earthquake, the load-bearing panel and the main body Since the connection area with the steel frame is reduced as much as possible, heat conduction to the pillar supporting the load of the building structure can be suppressed, and the strength of the pillar itself can be prevented from being affected. In other words, even if a wooden load-bearing panel is burned down in a fire, the building structure itself does not collapse, and it can be prevented from causing serious damage.

It is a front view of a load-bearing panel structure to which the present invention is applied. It is an assembly perspective view which shows the corner vicinity of the load-bearing panel structure to which this invention is applied. (A) is an enlarged view in the intersection of a pillar and a beam, (b) is the AA sectional drawing. (A) is a front view of a connection metal fitting, (b) is the right view, and (c) is the left view. (A) is a front view which shows the state which attached the connection metal fitting to the load-bearing panel, (b) is the sectional drawing. It is a figure for demonstrating the example which connects a 1st connection board and a 2nd connection board. It is a figure which shows the example which provided the ring-shaped pressing member about the volt | bolt so that the 1st connection board and the 2nd connection board might be pinched | interposed. (A) is a side view of the buckling prevention unit shown in FIG. 1, (b) is BB sectional drawing of the buckling prevention unit shown in FIG. It is a figure for demonstrating the state with which the load accompanying the gravity from an upper floor is loaded on this load-bearing panel structure. It is a figure for demonstrating the state by which a horizontal force is alternately loaded with respect to a load-bearing panel structure based on the vibration by an earthquake. It is a figure for demonstrating the example which a wooden load-bearing panel carries out dry shrinkage with time. It is a figure which shows the example which absorbs through a compression metal fitting about shrinkage | contraction of a load bearing panel.

  Hereinafter, embodiments of a load-bearing panel structure to which the present invention is applied will be described in detail.

  FIG. 1 is a front view of a load-bearing panel structure 1 to which the present invention is applied, and FIG. 2 is an assembled perspective view showing the vicinity of a corner of the load-bearing panel structure 1. The load-bearing panel structure 1 to which the present invention is applied is provided with a rectangular frame 13 composed of columns 11 and beams 12, a load-bearing panel 21 arranged in the frame 13, and a corner of the load-bearing panel 21 or in the vicinity thereof. The connecting metal fitting 3, a plate-like compressed metal 4 disposed between the load-bearing panel 21 and the pillar 11 or the beam 12, and a buckling prevention unit 5 disposed on the outer periphery of the load-bearing panel 21 are provided.

  3A is an enlarged view at the intersection of the column 11 and the beam 12, and FIG. 3B is a cross-sectional view taken along the line AA.

  The column 11 is made of steel and is made of a steel pipe column having a rectangular cross-sectional shape. This column 11 may be made of an H-shaped steel having flanges formed at both ends of the web, or may be made of any other cross-sectional shape such as a U-shaped groove-shaped steel. The upper and lower ends of the column 11 are connected to other beams 12a that are orthogonal thereto. A second connecting plate 19 extends from the column 11 toward the inside of the frame 13. The second connecting plate 19 is configured by a plate-like body. The second connecting plate 19 may be fixed to the column 11 by, for example, welding. The second connecting plate 19 has a second long hole 20 extending in the long axis direction of the column 11.

  The beam 12 is made of steel and is made of H-shaped steel in which flanges 16 and 17 are formed at both ends of the web 15, but is not limited to this, and the cross-sectional shape is any shape such as a rectangle or a groove shape. It may be comprised. Both ends of the beam 12 are connected to another beam 12a orthogonal thereto. A second connecting plate 19 extends from the beam 12 toward the inside of the frame 13. FIG. 3B shows an example in which the second connecting plate 19 is provided on the flange 16 facing the frame 13 side. The second connecting plate 19 is erected in a direction substantially parallel to the web 15. The second connecting plate 19 is configured by a plate-like body. The second connecting plate 19 may be fixed to the beam 12 by welding or the like, for example. The second connecting plate 19 has a second long hole 20 extending in the long axis direction of the beam 12.

  The load bearing panel 21 is made of wood. The load-bearing panel 21 may be constituted by a single wood board as a single material, or may be constituted by a laminated panel in which a plurality of wooden thin plates are laminated. The load-bearing panel 21 has a predetermined plate thickness and has a rectangular shape when viewed from the front. It is desirable that the rectangular shape of the load-bearing panel 21 is substantially similar to the rectangular shape of the frame 13. In addition, it is assumed that the width and height of the load-bearing panel 21 are configured to be smaller than the width and height of the frame 13. Thereby, a gap P is formed between the load-bearing panel 21 and the frame 13. As shown in FIG. 2, slits 22 for inserting the connection fitting 3 may be provided in advance at the corners of the load-bearing panel 21.

  By using wood as the load-bearing panel 21, it is possible to bring out the healing effect of the bark, the fresh scent of cedar, the softness of the color, and the like, and it is also possible to provide a relaxing space for the user. . Further, by using wood as the load-bearing panel 21, it is possible to exhibit high heat insulation and humidity control of the wood itself.

  As shown in FIG. 2 and FIG. 4 ((a) is a front view, (b) is a right side view thereof, and (c) is a left side view thereof) of the connecting metal fitting 3, as shown in FIG. 21 inserted from each corner or the vicinity thereof, a side plate portion 32 provided so that the inner surface 32a is perpendicular to the insertion plate 31, and a first extending outward from the side plate portion 32. 1 connecting plate 33.

  The insertion plate 31 is made of a thin metal plate, and can be inserted into the slit 22 provided in the load-bearing panel 21 described above. The insertion plate 31 has a right-angled isosceles triangle shape when viewed from the front, but is not limited thereto.

  The side plate portions 32 are respectively provided on two sides through the right-angled portion of the insertion plate 31 constituting a right-angled isosceles triangle, and are provided so as to be L-shaped when viewed from the front. As a result, the two side plate portions 32 may be orthogonal to each other, and the end portions may be fixed to each other by welding or the like. In the side plate portion 32, an outer surface 32b is provided on the back side of the planar inner surface 32a. The outer surface 32b is provided with an inclination as shown in FIGS. 4B and 4C at least at a portion where the first connecting plate 33 extends. The outer surface 32 b is inclined to be formed in the standing direction of the first connecting plate 33. That is, in FIGS. 4B and 4C, since the standing direction of the first connecting plate 33 is the downward direction, the outer surface 32 b faces downward from the side end toward the first connecting plate 33. The slope is provided.

  The first connecting plate 33 is a plate-like body erected so as to be in a vertical state with respect to the inner surface 32 a of each side plate portion 32. Since the side plate portion 32 is composed of two L-shaped plates, the first connecting plate 33 is also composed of two plate-like bodies. As a result, the first connecting plate 33 has an external shape that extends outward from the side plate portion 32. The first connecting plate 33 is provided with a long groove 34 that extends in the outward extending direction. Incidentally, as an alternative to providing the long groove 34, a long hole (not shown in the drawing) extended in one direction may be provided. Incidentally, when providing a long hole, it shall be extended in the same direction as the major axis direction of the long groove 34 mentioned above.

  FIG. 5A is a front view showing a state in which the connecting fitting 3 is actually attached to the load-bearing panel 21, and FIG. 5B is a cross-sectional view thereof. The insertion plate 31 in the connection fitting 3 is inserted into the load-bearing panel 21 and the side plate portions 32 are fixed in a state where they are in contact with the outer peripheral ends of the load-bearing panel 21.

  The compressed hardware 4 is sandwiched between the connection fitting 3 provided at the corner of the load-bearing panel 21 and the column 11 or the beam 12. As shown in FIG. 5A, the compressed metal piece 4 is arranged so as to be L-shaped along the side plate portion 32. As shown in the cross-sectional view shown in FIG. 5 (b), the compressed metal piece 4 has a U-shaped cross section, and has an upper flange 41, a web 43, and a lower flange 42. The upper surface of the upper flange 41 is an inclined surface. The inclination angle of the upper surface of the upper flange 41 is substantially the same as the inclination angle of the outer surface 32 b of the side plate portion 32.

  The web 43 has a hole 46 formed therein. A shaft of a bolt 61 is inserted into the hole 46, and its tip is screwed with a nut 62. The lower surface of the lower flange 42 continuing from the web 43 is in contact with the beam 12 (column 11).

  Two pieces of such compressed metal parts 4 are used as one set. Then, the two compressed metal pieces 4 are disposed on both sides of the second connecting plate 19. The two compressed metal pieces 4 are urged toward the second connecting plate 19. In other words, the two compressed metal parts 4 are biased toward the direction in which they approach each other. Any means for urging may be used, and a magnetic force may be used, or a spring or the like may be used. FIG. 5B shows an example in which a spring is used as the urging means, and a leaf spring 65 is disposed between the head of the bolt 61 and the web 43 in one of the compressed metal parts 4. A leaf spring 65 is disposed between the nut 62 and the web 43 of the other compressed metal 4. As a result of the restoring force of the leaf spring 65 acting on each compressed metal piece 4, the two compressed metal pieces 4 are urged toward the direction of approaching each other. Further, the urging force of the compressed metal piece 4 is transmitted to the outer surface 32b of the side plate portion 32 through the inclined upper surface of the upper flange 32b. The outer surface 32 b of the side plate portion 32 is in contact with the upper flange 32 b of the compressed metal member 4, and the inclination direction is inclined toward the first connecting plate 33. For this reason, it becomes possible for the outer surface 32b in the side-plate part 32 to oppose this with respect to the urging | biasing force of the compression metal object 4 mentioned above, and this compression metal object 4 will be stabilized in the position where force mutually suspends. The configuration of the compressed hardware 4 is not essential, and may be omitted as necessary.

  Bolt 61 has a shaft 46 through which hole 46 in compressed metal 4 is inserted. Further, the shaft of the bolt 61 has the second long hole 20 in the second connecting plate 19 attached to the column 11 or the beam 12 and the long groove 34 of the first connecting plate 33 in the connecting metal fitting 3. Each is inserted. The first connecting plate 33 and the second connecting plate 19 are connected to each other through the insertion of the shaft by the bolt 61.

  In the example of FIG. 5B, a plate-like body 131 may be interposed between the flange 16 and the flange 17 in the beam 12. The interposition position of the plate-like body 131 corresponds to the position of the compressed metal piece 4. As a result, it is possible to support the load transmitted through the compressed metal piece 4 through the plate-like body 131.

  When the first connecting plate 33 and the second connecting plate 19 are actually connected, the connecting fitting 3 is brought closer to the intersection of the column 11 and the beam as shown in FIG. Then, as shown in FIG. 6B, the second long hole 20 in the second connecting plate 19 and the long groove 34 of the first connecting plate 33 in the connecting fitting 3 are aligned with each other. At this time, since the second long hole 20 and the long groove 34 are long and thin in a direction orthogonal to each other, it is possible to absorb the clearance at the time of alignment. The second elongated hole 20 and the elongated groove 34 thus aligned with each other are fixed by being inserted through the shaft of the bolt 61 described above.

  The bolt 61 is not limited to the configuration described above, and any configuration can be used as long as it is a simple shaft without a head or a screw. Further, as shown in FIG. 7, the bolt 61 may have a ring-shaped pressing member 71 provided so as to sandwich the inserted first connecting plate 33 and second connecting plate 19. The pressing member 71 may be made of a resin such as rubber, metal, or any other material, and is attached around the shaft of the bolt 61. By providing the pressing member 71, it is possible to suppress the first connecting plate 33 and the second connecting plate 19 from moving and shifting in the axial direction of the bolt 61. Misalignment can be prevented.

  Fig.8 (a) is a side view of the buckling prevention unit 5 shown in FIG. 1, FIG.8 (b) has shown BB sectional drawing of the buckling prevention unit 5 shown in FIG. The buckling prevention unit 5 includes an embedded plate 101 embedded in an end portion of the load-bearing panel 21, a protruding plate 106 protruding from the embedded plate 101, an extension plate 103 extended from the beam 12 to the inside of the frame 13, a bolt 104 and a nut 105.

  One end of the embedded plate 101 is embedded in the load-bearing panel 21, and the protruding plate 106 extends toward the beam 12. The extension plate 103 has a long hole 171 through which the shaft of the bolt 104 is inserted. A nut 105 is screwed to the tip of the bolt 104. The protruding plate 106 is also provided with a hole (not shown) through which the bolt 104 is inserted. The extension plate 103 and the protruding plate 106 are connected to each other by being inserted into a common bolt 104.

  In the example of FIG. 8 described above, the example in which the buckling prevention unit 5 is provided between the column 11 and the load-bearing panel 21 has been described. However, the present invention is not limited to this. May be provided in the same manner.

  Next, the operation of the load bearing panel structure 1 to which the present invention is applied will be described.

  In the case of a static state in which no earthquake has occurred, as shown in FIG. 9, a load accompanying gravity from the upper floor is applied to the load-bearing panel structure 1 in the direction of the arrow in the figure. This load is applied from the upper side to the lower side, and all these loads are borne by the frame 13. That is, the stress flowing from above is transmitted downward through the column 11 and hardly flows to the load-bearing panel 21 through the connection fitting 3. For this reason, this load-bearing panel 21 does not become a main structure according to the Building Standard Law, and it is possible to represent the wood part of the load-bearing panel 21 as it is in a fire-resistant building with many restrictions.

  On the other hand, when an earthquake occurs, a horizontal force is alternately applied to the load-bearing panel structure 1 as shown in FIGS. 10 (a) and 10 (b) based on the vibration caused by the earthquake. . When such a horizontal force is applied, in the load-bearing panel structure 1 to which the present invention is applied, a compressive force is loaded onto the load-bearing panel 21. In the load-bearing panel structure 1, a tensile force is applied to the column 11 in the frame 13. That is, in the load-bearing panel structure 1, a tensile force and a compressive force are applied in a triangular region indicated by a dotted line in the drawing, and the suspension is maintained. The reason why the compressive force is mainly applied to the load-bearing panel 21 as described above is that the compressive force is connected to the frame 13 (column 11 and beam 12) via the four corners of the load-bearing panel 21. That is, a stress transmission path is formed in the direction of the diagonal line of the load-bearing panel 21. For this reason, as shown in FIG. 10, when the frame 13 is deformed into a parallelogram shape based on the horizontal force applied by the earthquake, the diagonal interval of the frame 13 is further narrowed. As a result, a large compressive force is applied to the load bearing panel 21 connected to the frame 13 in the diagonal direction.

  On the other hand, when the frame 13 is deformed into a parallelogram shape, a force is applied to the column 11 to be deformed in an oblique direction, and this is loaded as a tensile force.

  That is, based on the mechanism described above, a large compressive force is applied to the load-bearing panel 21 based on the vibration caused by the earthquake, and a greater tensile force is applied to the column 11, thereby controlling the stress transmission mode. It becomes possible.

  Although the load-bearing panel 21 is made of wood, it is particularly resistant to compressive force. On the other hand, the column 11 is made of steel, but steel is strong in tensile force and weak in compressive force. In the load-bearing panel structure 1 to which the present invention is applied, the compressive force applied by the earthquake can be borne by the wooden load-bearing panel 21, and the tensile force loaded by the earthquake can be borne by the pillar 11. That is, it is possible to effectively extract the advantages of steel that is strong in tensile force and wood that is strong in compressive force, and provide an earthquake-resistant system that complements each other. Thereby, since it can oppose with a strong material with respect to each stress transmission mode, it becomes possible to improve seismic performance more.

  Further, in the load-bearing panel structure 1 to which the present invention is applied, the load of the building structure is supported by the pillars 11, but even when the wooden load-bearing panel 21 itself burns due to an earthquake fire, the load-bearing panel and the main body Since the contact surface with the steel frame is reduced as much as possible, heat conduction to the pillar 11 that supports the load of the building structure can be suppressed, and the strength of the pillar 11 itself can be prevented from being affected. That is, even if the wooden load-bearing panel 21 is burned down by a fire, the building structure itself is not collapsed, and it can be prevented from causing serious damage.

  In addition to the effects described above, the present invention can also be expected to have the effects described below. Since the load-bearing panel 21 is made of wood, it shrinks in the direction of the arrow shown in FIG. 11 when dried over time. At this time, the shrinkage of the load-bearing panel 21 can be absorbed through the compressed metal 4.

  Initially, as shown in FIG. 12 (a), the restoring force of the leaf spring 65 acts on each compressed metal piece 4, and as a result, the two compressed metal pieces 4 are urged toward the direction of approaching each other. It becomes. The outer surface 32b of the side plate portion 32 can oppose the urging force of the compressed metal piece 4, and the compressed metal piece 4 is stabilized at a position where the forces are suspended from each other.

  On the other hand, when the wood constituting the load-bearing panel 21 is dried, contraction occurs in the direction of the arrow in the figure as shown in FIG. As a result, the outer surface 32b of the side plate portion 32 is also shifted upward. For this reason, in principle, the outer surface 32b of the side plate portion 32 and the upper surface of the upper flange 41 of the compressed metal piece 4 tend to be separated. As described above, the compressed metal parts 4 are biased toward the direction in which they approach each other. For this reason, the outer surface 32b of the side plate portion 32 follows the upward shift, and the compressed metal parts 4 are moved closer to each other as shown in FIG. Shift in a direction approaching the connecting plate 19. In such a case, when the leaf spring 65 is extended, the compressed metal parts 4 are pressed toward each other and gradually shifted.

  As described above, according to the present invention, when wood is used as the load-bearing panel 21, even when it is dry-shrinked, the compressed metal 4 follows this to absorb the dry shrinkage. It becomes. For this reason, it becomes possible for the load-bearing panel 21 to prevent cracks and cracks that are generated by tightly joining the connecting fitting 3 connected to the corners.

  Incidentally, the buckling prevention unit 5 can prevent buckling of the load-bearing panel 21 itself during an earthquake. In addition to this, even when the load-bearing panel 21 is deformed and detached from the connection fitting 3 at the time of an earthquake, the buckling prevention unit 5 is attached to the load-bearing panel 21 to prevent the fall-down. Is possible.

  In the load-bearing panel structure 1 having the above-described configuration, particularly when using the load-bearing panel 21 made of wood, it is possible to contribute to the mass consumption of thinned wood by using domestic cedar, etc., and to activate the domestic forestry. Is also connected. In particular, the use of wood for the load-bearing panel 21 occupying a large area in a building structure can increase the number of standing rice for wood consumption.

  Moreover, in the load-bearing panel structure 1 to which the present invention is applied, since the load-bearing capacity is shared with the horizontal force applied during an earthquake together with the main body steel frame portion, the main body steel member can be made smaller than usual. . A similar effect can be expected for a steel panel, but since it is made of wood, the weight of the entire building structure can be greatly reduced, and the construction cost can be reduced. In addition to this, it is possible to respond to the desire to reconstruct the wooden architecture culture and tradition unique to Japan.

  Furthermore, according to the present invention, it is possible to perform post-installation on an existing building structure, and the attachment fitting is completed by attaching the connecting fitting 3 to the load-bearing panel 21 and screwing the bolt 61 and the nut 62 together. As a result, the noise during construction can be suppressed to a very low level, the ease of construction can be improved, and the construction period can be shortened.

  The present invention is not limited to the embodiment described above. For example, the case where the connecting fitting 3 is attached to each of the pillar 11 and the beam 12 has been described, but it is needless to say that the connecting fitting 3 may be attached to either the pillar 11 or the beam 12. Moreover, the connection metal fitting 3 is not limited to the case where it is attached to the corner of the load-bearing panel 21, and may be attached near the corner.

DESCRIPTION OF SYMBOLS 1 Strength panel structure 3 Connecting metal fitting 4 Compression metal fitting 5 Buckling prevention unit 11 Column 12 Beam 13 Frame 15 Web 16, 17 Flange 19 2nd connection board 20 Long hole 21 Strength panel 22 Slit 31 Insertion board 32 Side plate part 33 1st Connecting plate 34 long groove 41 upper flange 42 lower flange 43 web 46 hole 61 bolt 62 nut 65 leaf spring 71 member 101 buried plate 102 compressed metal 103 extension plate 104 bolt 105 nut 106 protruding plate 131 plate-like body 171 hole

Claims (11)

A wooden load-bearing panel is placed in a rectangular frame made of steel columns and beams.
The load-bearing panel has an upper end and a lower end that are separated from the beam, and both side ends that are separated from the column. And / or a load-bearing panel structure connected to the beam. The connection fitting has an insertion plate inserted from each corner of the load-bearing panel or the vicinity thereof, and a first connection plate extended outward from the load-bearing panel in the inserted state of the insertion plate,
The pillar and the beam have a second connecting plate extending toward the inside of the frame, and the shaft is inserted into the second connecting plate and the first connecting plate, thereby allowing the connecting bracket to The load-bearing panel structure according to claim 1, wherein the structure is connected. The connecting metal fitting has a side plate portion that is brought into contact with a side end of the load-bearing panel in an inserted state of the insertion plate so that an inner surface is vertical.
The outer surface of the side plate portion is inclined toward the standing direction of the first connecting plate while the first connecting plate is set up.
It further has two plate-shaped compressed metal objects sandwiched between the side plate part and the pillars or beams, and the compressed metal objects are disposed on both sides of the second connecting plate, respectively. The load-bearing panel structure according to claim 2, wherein an inclined surface formed on an upper surface of the connecting plate is abutted against an outer surface of the side plate portion. When the outer surface of the side plate portion shifts in a direction away from the frame in accordance with the drying shrinkage of the load-bearing panel, the compressed hardware shifts in a direction close to the second connecting plate. The load-bearing panel structure according to claim 3. The shaft is provided with a ring-shaped pressing member provided so as to sandwich the inserted first connecting plate and the second connecting plate. 1. A load-bearing panel structure according to item 1. 6. The first connecting plate according to claim 2, wherein the first connecting plate is extended in the outward extending direction and has a long groove or a first long hole through which the shaft is inserted. The load-bearing panel structure according to any one of the above. When the second connecting plate is formed on the column, the second connecting plate is extended toward the long axis direction of the column, and when formed on the beam, the second connecting plate is extended toward the long axis direction of the beam. The load-bearing panel structure according to any one of claims 2 to 6, further comprising a second long hole through which the shaft is inserted. When the horizontal force is applied to the load-bearing panel, a compressive force based mainly on the horizontal force is applied in a diagonal direction via the connection fitting,
The load-bearing panel structure according to any one of claims 2 to 7, wherein when the horizontal force is applied, the column is mainly subjected to a tensile force based on the horizontal force. The first connecting plate and the second connecting plate are configured to have an L-shaped cross section when viewed from the front, the inner side is inscribed in the corner of the load-bearing panel, and the outer side is in contact with the column and the beam. The load-bearing panel structure according to any one of claims 2 to 8, wherein The load bearing panel further comprises a buckling prevention plate extending outward, and an extension end of the buckling prevention plate is in contact with the frame. The load-bearing panel structure described in the section. The load-bearing panel structure according to any one of claims 2 to 10, wherein the load-bearing panel is a laminated panel in which a plurality of wooden thin plates are laminated.

Images