JP3981037B2 - Beam-column joint structure - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a structure for joining a column and a beam in a wooden building, and more particularly to a column-beam joint structure in which relative deformation is constrained at the joint between the column and the beam, and a bending moment is transmitted between the two. .
[0002]
[Prior art]
In a wooden structure that has been widely used, a pillar and a beam have long been joined by inserting a tenon in which the end of the beam is processed into a tenon provided in the pillar. In such a joint structure, deformation between both is allowed, and no bending moment is transmitted. In other words, the shaft assembly that cannot resist the bending moment and is formed of a plurality of columns and a plurality of beams (including members that are installed in the lateral direction such as torso, eaves, and foundations) is deformed. easy. For this reason, braces are arranged in the walls between the columns to resist the deformation of the shaft assembly due to horizontal forces during an earthquake or the like.
[0003]
Bracing is generally provided at a plurality of positions and is further required in two orthogonal directions. Therefore, in the conventional wooden building, it is necessary to secure a wall body for providing braces, which may cause problems in setting the opening and using the indoor space. Under such circumstances, there has been proposed a so-called rigid connection between the column and the beam, that is, a connection that causes the transmission of a bending moment, and a ramen structure as the shaft assembly.
[0004]
In the joint structure described in Patent Document 1, joint fittings are attached to the end face of a beam and the side face of a column, and these joint fittings are joined to each other. The joint fitting has protrusions having an I-shaped cross section, and a mounting iron plate is brought into contact with these protrusions and connected with bolts. Further, the fitting is fixed to a steel bar having an external thread on the outer peripheral surface, or a steel bar screwed in the horizontal direction from the side surface of the column, screwed in the axial direction from the end face of the beam.
[0005]
In the joint structure described in Patent Document 2, a gusset plate is attached to a beam so as to cover the entire end face, and the gusset plate is fastened to the column using a lag screw bolt that is screwed horizontally from the side of the column. . The gusset plate is fixed to the beam using a number of drift pins.
[0006]
In the joint structure described in Patent Document 3, the metal fitting insertion hole is provided in the horizontal direction from the end face of the beam, and the metal fitting insertion hole is provided in the horizontal direction also from the side surface of the column. Then, both ends of the drawing metal fitting are inserted into these metal fitting insertion holes and locked to the beam or the column in the hole, and the column and the beam are drawn and pressed by the drawing metal fitting. The drawing metal fitting has two bolts and a long nut-like member that connects them, and the screwing of one bolt and the long nut is a reverse screw. In addition, the means for locking the attracting metal fitting to the column or beam is a through-hole provided in the attracting metal fitting while inserting the metal fitting fixing tool into the metal fitting fixing hole portion provided in a direction perpendicular to the axis of the pillar or beam. In addition, the metal fixture is inserted and locked.
[0007]
[Patent Document 1]
Patent Publication No. 2798239
[Patent Document 2]
Japanese Patent Publication No. 2653414
[Patent Document 3]
JP 2001-355287 A
[0008]
[Problems to be solved by the invention]
However, the above known joint structures have the following unsolved problems.
Since all the joint structures described in the above-mentioned patent documents are joined by abutting the end face of the beam against the side surface of the column, a bending moment and a large shear force act on the joint surface. In order to resist this large shearing force, the joining structures of Patent Literature 1 and Patent Literature 2 use a large metallic joining member that covers the entire area of the beam end face. If such a large joining member is used, the structure of the joining portion becomes complicated as shown in Patent Document 1, or the joining member is fixed to the wooden member as shown in Patent Document 2. Many pins are required. And the amount of work and cost of processing will increase.
[0009]
Further, in the joint structure of Patent Document 3, a concave portion is provided on the column side of the joint surface, and a convex portion is provided on the beam to be fitted together, and the beam and the column are restrained by a pulling metal fitting so that the above-described fitting is not released. However, a dimensional error or the like of the metal fitting fixing hole is likely to occur in the engaging portion between the drawing metal fitting and the beam or the column. For this reason, it is difficult for the pulling metal fitting to resist the compressive force when a bending moment is generated between the column and the beam. Accordingly, the deformation, that is, the angle between the columns and the beams is easily changed, and it cannot be firmly coupled.
In addition, the pulling bracket is locked in advance to either the column or the beam, and when the column and the beam are joined, the pulling bracket is inserted into a bracket insertion hole provided in the other of the column or the beam. It must be stopped, and workability is getting worse. That is, it is necessary to perform the work of fixing the metal fitting to the wooden member on the site during the joining work of the column and the beam.
[0010]
The present invention has been made in view of the circumstances as described above, and an object thereof is to provide a joint structure of a wooden column and a beam capable of reliably transmitting a bending moment with a simple structure. It is.
[0011]
[Means for Solving the Problems]
In order to solve the above-mentioned problem, the invention according to claim 1 is a joined structure of a wooden beam laid in a lateral direction and a wooden column joined with an end face in contact with the upper or lower surface of the beam. The column is used in such a way that a cross-sectional dimension in the axial direction of the beam is larger than a cross-sectional dimension in the width direction of the beam, and the two vertical holes provided in the beam at a predetermined interval are used. The screw members having a spiral projecting portion on the outer periphery are respectively screwed, and notches are provided at both ends in the long side direction of the end surface at the lower end or the upper end of the column, and the axis of the column from the notch A hole is provided in each direction, and a screw member is screwed into each of the holes, and a central portion in the long side direction of the end surface of the column is in contact with the upper surface or the lower surface of the beam, and the screw member embedded in the beam Ends and scrubs embedded in the pillars Provided is a column beam connection structure in which an end portion of a Liu member is connected by a connecting member.
[0012]
In the above configuration, a wooden column having a member width in a plane including both axes is larger than a member dimension in the thickness direction with respect to this plane. Similarly, it is desirable to use a beam whose dimension in the height direction is larger than that in the width direction. That is, the effect of the present invention becomes more prominent by increasing the size of the member in the direction in which the bending moment acts when the beam and column are joined to form a rigid frame structure. Here, the beam includes general members erected in the lateral direction such as torso, eaves, and foundation.
[0013]
In this joint structure, the upper end surface or the lower end surface of the column is in contact with the lower surface or the upper surface of the beam, and the bending surface and a large bearing pressure (force in the direction perpendicular to the joint surface) are applied to the joint surface. A large shear force (force in a direction parallel to the joint surface) does not act. Accordingly, the central portion of the column is directly brought into contact with the beam to transmit a large vertical force.
[0014]
On the other hand, the end of the screw member embedded in the beam at a predetermined interval and the screw member embedded in the end of the column are connected by a connecting member, and the axial direction of the column when a bending moment is applied The compressive force and tensile force generated in is transmitted to the beam through the screw member embedded in the column, the connecting member, and the screw member embedded in the beam. Moreover, the scoop member is screwed into a pillar and a beam which are wood members in advance and is firmly integrated. Therefore, deformation hardly occurs between the column and the beam, and the bending moment is reliably transmitted, so that a rigid frame structure is obtained.
[0015]
Further, the screw member embedded in the beam is penetrated in the vertical direction of the beam, that is, the direction perpendicular to the grain, and has an effect of reinforcing the beam. The force is distributed over a wide range in the cross section of the beam via the screw member, and stress is not concentrated in the beam, and the bending moment is transmitted smoothly.
[0016]
According to a second aspect of the present invention, in the column beam connection structure according to the first aspect, the connecting member has a pulling mechanism that pulls two screw members to be connected in the axial direction thereof.
[0017]
In this joint structure, the central portion of the column end surface is in contact with the lower or upper surface of the beam, and the screw member embedded in the axial direction in the notch portions provided near both edges of the column end surface, and the screw member The screw members embedded in the beam in the vertical direction at the opposing positions are respectively connected by the connecting members, and the columns and the beams can be drawn by the pulling function of the connecting members. Thereby, the center part of the end surface of a pillar and the lower surface or upper surface of a beam are pressed strongly, and the supporting pressure which acts on a joining surface can be made substantially uniform over the whole joining surface. Therefore, the column and the beam are firmly joined, and a structure with little deformation between them can be obtained.
In addition, since it is arranged in the space between the notch provided in the column and the upper or lower surface of the beam, the center of the column and the upper or lower surface of the beam are in contact with each other in this space. The connecting member can be expanded and contracted.
[0018]
The invention according to claim 3 is the column beam connection structure according to claim 1, wherein the connecting member is screwed into a screw hole provided in an axial direction from an end surface of a screw member embedded in the column. A second bolt that is screwed into a screw hole provided in an axial direction from an end surface of the screw member embedded in the beam, and an end portion of the bolt opposite to the end portion screwed into the screw member And a threaded portion between one of the first bolt and the second bolt and the coupling nut is a reverse screw having a thread gradient in the opposite direction. It shall be.
[0019]
In this joining structure, the first bolt is screwed into the screw hole provided in the end surface of the screw member embedded in the column, and the second bolt is screwed into the screw hole provided in the end surface of the screw member embedded in the beam. Then, the ends opposite to the ends screwed into the screw members of the first bolt and the second bolt are coupled to each other by the connecting nut. Since the threaded portion of either the first bolt or the second bolt and the connecting nut is a reverse thread, the connecting nut is screwed to both the first bolt and the second bolt. By rotating the connecting nut, the first bolt and the second bolt are pulled together, whereby both the screw member and the column and the beam are pulled together. Therefore, the end face of the column is strongly pressed against the upper or lower surface of the beam.
[0020]
Further, in this structure, the first bolt and the second bolt are screwed in advance into the screw members fixed to the pillar and the beam, and the connecting nut is screwed into the bolt whose one end portion is a reverse screw. To do. And a pillar and a beam are built in a predetermined position, and it mutually contact | abuts, Then, a 1st volt | bolt and a 2nd volt | bolt can be joined with a connection nut. In other words, when one bolt member is screwed with a bolt having a reverse thread and a connecting nut, and the other screw member is fully screwed with a belt having a full-length forward thread to face the same axis, the full-length is full The bolt can be rotated to connect the bolt with a connecting nut. Thereafter, both screw members can be drawn by rotating only the connecting nut or the connecting nut and a bolt having a total length of a forward screw.
Therefore, after the pillar and the beam are built in a predetermined position, the screw member can be connected and pulled, and the work efficiency is remarkably improved.
[0021]
The invention according to claim 4 is the column beam connection structure according to claim 3, wherein the bolt is one of the first bolt and the second bolt, and a forward thread is applied over the entire length. It is assumed that the bolt is provided with a stopper that comes into contact with the end face of the connection nut and limits the screwing length into the connection nut.
[0022]
In this joining structure, by contacting the stopper with the end face of the connecting nut, a predetermined length of a bolt having a forward thread is securely screwed into the connecting nut, and the bolt is fixed to the connecting nut. can do. In this state, when the bolt and the connecting nut that are forward threaded are rotated in the forward direction, the bolt is screwed into the screw member, and the bolt that is threaded in the reverse direction is also It is screwed into the connection nut at the threaded part with the connection nut. As a result, the column and the beam can be pulled and pressed strongly.
[0023]
The invention according to claim 5 is the column beam connection structure according to any one of claims 1 to 4, wherein the column is inserted between the upper surface or the lower surface of the beam and the column in the notch, It has a compression block which resists the compressive force of the axial direction.
[0024]
In this joint structure, when a large bending moment acts on the joint between the column and the beam, a compressive stress acts on one of the two connecting members that join the column and the beam, and a tensile stress acts on the other. And since the compression block is inserted in the circumference | surroundings of a connection member, the compression block around the connection member to which a compressive stress acts bears a part of compressive force, and reduces the compression stress of a connection member. As a result, even if the connecting member includes a slightly thin member such as a bolt, buckling is prevented and a large load resistance against a bending moment is obtained.
[0025]
The invention according to claim 6 is the column beam connection structure according to any one of claims 1 to 5, wherein an end surface of the column and an upper surface or a lower surface of the beam in contact with the end surface are: It is assumed that a shear resistance member that is embedded across both sides and that restrains relative displacement in the direction of the contact surface is embedded.
[0026]
In this joint structure, when a force in the horizontal direction acts on the joint surface between the column and the beam, that is, a force that causes the members to deviate from each other in the direction along the joint surface, the column and the beam are restrained by the shear resistance member, It is restrained that the column and the beam are relatively displaced in the direction of the contact surface.
[0027]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a schematic perspective view showing a structural frame of a wooden building in which the column beam joint structure of the present invention is suitably used.
In this structural housing, the lower layer portion constituting the first floor and the upper layer portion constituting the second floor are each formed by combining a plurality of ramen frame structures, and the entire structural housing is formed by laminating them. . The lower layer part is formed by joining a wooden column 1 and a wooden beam 2 to form a frame structure and connecting a plurality of frame structures to each other. In the upper layer portion, a plurality of pillars 3 are erected on the beam 2 of the lower frame structure of the lower layer, and a plurality of frame structures are formed by joining the beams 4 thereon to form the plurality of frame structures. It is a connected body. And the lower end of the pillar of the second floor part is rigidly connected so that a bending moment is transmitted to the beam spanned on the pillar of the first floor part.
[0028]
Each of the pillars 1 and 3 and the beams 2 and 4 constituting the frame structure is a flat member having a large cross-sectional dimension in a direction parallel to the vertical plane including these axes and a small cross-sectional dimension in a direction perpendicular thereto. It has become. Therefore, each member of each frame structure is used as a member that resists bending in one direction, and a plurality of one-way frames are combined to constitute the entire structural frame.
[0029]
Each frame structure has a so-called beam-winning structure in which the beam 2 is brought into contact with and joined to the upper end surface of the column 1. For example, by joining the beam 2-1 and the beam 2-2, a plurality of ramens are joined. The frame bodies are connected to each other. The upper layer portion has the same structure.
[0030]
FIG. 2 is a schematic perspective view showing an embodiment of the invention according to the present application, which is a joint structure between the lower-layer beam 2 and the upper-layer column 3 used in the frame structure shown in FIG. FIG. 3 is a cross-sectional view of the same joint structure, showing a cross section parallel to the axis of the rigid frame structure.
In this joint structure, notches 3b are provided at both ends in the long side direction of the end surface at the lower end of the pillar 3, and the center part is in contact with the upper surface of the beam 2, and the notch 3b of the pillar 3 Two screw members 11 are screwed in the axial direction of the column. On the other hand, two screw members 12 are screwed in the corresponding positions of the beam 2 in the vertical direction, and the screw member screwed into the column and the screw member screwed into the beam are opposed to each other by the connecting member 13. It is connected. Thereby, the pillar 3 and the beam 2 are joined.
[0031]
As shown in the plan view and the front view of FIG. 5, the screw member 11 is provided with a spiral projecting portion 11a on the side surface of a rod-shaped steel member, and screw holes in the axial direction from the end surface at both ends. 11b is provided. As shown in FIG. 6, the screw member 11 screwed into the column is provided with a hole 3a in the axial direction from the notch 3b at the lower end of the column 3, and further screwed after cutting a spiral groove. . Further, the screw member 12 screwed into the beam is the same as the screw member 11 used for the column. As shown in FIG. 7, the two through holes 2a are spaced from the beam 2 at a predetermined interval. Are provided in the vertical direction and screwed in the same manner.
[0032]
As shown in FIGS. 4, 6, and 7, the connecting member 13 includes a first bolt 21 that is screwed into the screw hole 11 b of the screw member 11 embedded in the column 3 and a screw member embedded in the beam 2. 12 is provided with a second bolt 22 screwed into a screw hole 12b provided in the axial direction from the end face of 12, and a connecting nut 23 for connecting the first bolt 21 and the second bolt 22 to each other. The second bolt 22 is threaded in the forward direction over its entire length, and a stopper 22 a that abuts the lower end surface of the connection nut 23 and limits the screwing length into the connection nut 23 is fixed. As shown in FIG. 6 or FIG. 8 (a), the first bolt 21 has a forward thread from the center to one side 21a, and the gradient is opposite to the other side 21b. Threaded. The connecting nut 23 has a spiral groove that is threadedly engaged with a forward thread on the lower half 23a of the inner peripheral surface in the central axial direction, and is threaded with a reverse thread on the other upper half 23b. A spiral groove is cut.
[0033]
Next, the process of joining the column 3 and the beam 2 will be described.
As shown in FIG. 8A, the screw member 11 is screwed into the vertical hole 3 a provided in the pillar 3, and the forward direction of the first bolt 21 is inserted into the screw hole 11 b provided in the screw member 11. The threaded end 21a is screwed to a predetermined length and fixed so as not to rotate. Next, the connecting nut 23 is rotated in a direction to be screwed into the reverse screw thread, and the end 21 b of the first bolt 21 with the reverse screw thread and the reverse screw of the connecting nut 23 are rotated. The portion 23b having a groove is screwed. As shown in FIG. 7, the screw member 12 is screwed into the through hole 2 a provided in the beam 2, and the second bolt 22 is deeply screwed into the screw hole 12 b provided in the screw member 12. At this time, the second bolt 22 can be screwed in until the stopper 22 a provided on the second bolt 22 contacts the end face of the beam 2.
[0034]
Next, the pillar 3 is built on the beam 2. At this time, in the notch portions 3b at both ends of the pillar 3, as shown in FIG. 8B, the lower end surface of the connection nut 23 and the upper end surface of the second bolt 22 are spaced apart from each other with a certain distance. Even if the central portion of the lower end surface of the column 3 is in direct contact with the upper surface of the beam 2, the second bolt 22 and the connecting nut 23 do not limit the position of the column 3. Then, as shown in FIG. 8C, by rotating the second bolt 22 screwed into the beam-side screw member 12 in the reverse direction, the upper portion of the second bolt 22 is moved in the order of the connecting nut 23. Screw into the portion 23a provided with the direction screw. The length of the second bolt 22 screwed into the connecting nut 23 by the stopper 22a provided on the second bolt 22 is limited, and the second bolt 22 is screwed in until the stopper 22a contacts the lower end surface of the connecting nut 23. A predetermined length of the second bolt 22 is screwed with the connecting nut 23, and both are fixed integrally.
[0035]
Then, both the connecting nut 23 and the second bolt 22 are rotated in the forward direction. As a result, the first bolt 21 is screwed into the portion 23 b of the connecting nut 23 where the reverse screw is applied, and the second bolt 22 is screwed into the screw hole 12 b of the screw member 12 embedded in the beam 2. Therefore, both the screw member 11 and the first bolt 21 screwed into the column 3 and the screw member 12 screwed into the beam 2 are attracted to the connection nut, and the column 3 and the beam 2 are attracted, The joint surface between the central portion of the column 3 and the upper surface of the beam 2 is strongly pressed. As a result, the vertical force is transmitted while the column 3 and the beam 2 are always in pressure contact with each other. The bending moment acting on the column 3 is resisted by the tensile force and the compressive force transmitted from the screw member 11 to the beam 2 via the connecting member 13 and the screw member 12, and both joint portions are High rigidity is maintained.
[0036]
In the embodiment described above, the lower-layer beam 2 and the upper-layer column 3 supported on the lower-layer beam 2 are joined, but the column 1 or the column 3 and the beam 2 supported on the column 1 or the column 3. Or it can be set as the same structure also in the junction part with the beam 4.
When the column 1 and the beam 2 or the column 3 and the beam 4 are joined so that the bending moment can be transmitted to form a two-layered frame structure, the same structure as above is inverted up and down, Columns and beams can be joined. The lower column 1 can be provided, for example, immediately below the column 3 forming the upper frame structure. At this time, the screw member 12 penetrating the beam 2 is connected to the upper column 3 and the beam 2. What was used for joining of these can be used in common. Thereby, the pillar 1 of the 1st floor part and the pillar 3 of the 2nd floor part are connected via the screw member 12, and both pillars have rigidity close to the through pillar.
[0037]
Moreover, the pillar 1 of the 1st floor part and the pillar 3 of the 2nd floor part are not limited to what is erected at the same position as described above, and the pillar 1-1 and the pillar 3- shown in FIG. It can be erected by changing its position completely like 1 and it is slightly shifted by using only one of the two screw members in common like the pillar 1-2 and the pillar 3-2. It can also be erected at the position.
[0038]
On the other hand, another beam can be joined at the portion where the column and the beam are joined. Such a joining structure will be described based on a schematic perspective view shown in FIG.
In this structure, the column 31 and the first beam 32 are joined in the same manner as the joining structure shown in FIG. 2, but the two of the screw members 40 and 41 penetrating the first beam 32 are included. As shown in FIG. 10, one piece 41 has a screw hole 41 a penetrating in the middle portion in the length direction in a direction perpendicular to the axis. In addition, the code | symbol 41b in FIG. 10 is the helical protrusion part provided in the side surface of the screw member, and the code | symbol 41c is a screw hole provided in the axial direction from the end surface of both ends. The first beam 32 has a lateral hole 32a that leads from the side surface of the first beam 32 to the screw hole 41a of the screw member 41. The bolt is inserted into the lateral hole 32a and screwed into the screw member 41. Due to 42, the beam joining metal fitting 43 is fixed to the side surface of the first beam 32.
[0039]
The beam joint fitting 43 includes a first joint plate portion 43a that is in contact with the side surface of the first beam 32, and two second joints raised at right angles from both side edges of the first joint plate portion 43a. The first joining plate portion 43a is provided with a hole 43c through which the bolt 42 to be screwed into the screw member 41 is inserted. The two second bonding plate portions 43b are provided with holes 43d through which the pins 45 are inserted at corresponding positions.
[0040]
The second beam 33 is provided with a vertical through hole 33a at an end portion, and a screw member 44 is screwed into the through hole 33a. This screw member 44 is the same as that shown in FIG. 10, and a through hole in a direction perpendicular to the axis is provided at an intermediate position in the axial direction, and a pin 45 is inserted into the through hole. Yes. Further, at the end of the second beam 33, vertical slits 33b parallel to the axis of the beam are provided on both sides of the position where the screw member 44 is inserted. The second joining plate portion 43b of the beam joining bracket is inserted. And the pin 45 is inserted from the side of the 2nd beam 33, and the beam joining metal fitting 43 and the screw member 44 are couple | bonded by inserting in the through-hole 44a of the said 2nd joining board part 43b and the screw member 44. Yes.
[0041]
With the above configuration, the second beam 33 is abutted against and joined to the side surface of the first beam 32, and the shearing force acting between the two beams is changed from the screw member 44 of the second beam 33 to the pin 45, the beam joint fitting 43. The first beam 32 is transmitted to the first beam 32 through the bolt 42 and the screw member 41 of the first beam. The two beams 32 and 33 joined in this way are reinforced so that the screw members 41 and 44 penetrate in the vertical direction, that is, the direction perpendicular to the grain of the beam, and the beams are not cracked, and through the screw members. The cross-sectional force is transmitted as it is to the cross-section of the beam, and local stress concentration is avoided.
[0042]
On the other hand, as shown in FIG. 11, the column beam connection structure described above is compressed in the axial direction of the column 51 between the column 51 and the upper surface of the beam 52, that is, around the connecting member in the notch of the column. A compression block 53 that resists force can be inserted.
The compression block 53 is made of a steel material, and includes two horizontal plate portions 53 a that are in contact with the horizontal plane in the notch portion of the column 51 and the upper surface of the beam 52, and a part of each edge of the opposing horizontal plate portion 53 a. And a side plate portion 53b to be connected. Further, the horizontal plate portion 53a is provided with a notch 53c for inserting the connecting member 56. After joining the column 51 and the beam 52, the upper surface of the column 51 and the beam 52 is formed in the notch. The compression block 53 can be inserted in between.
[0043]
In this joint structure, a bending moment acts on the joint between the column 51 and the beam 52, an axial compressive stress acts near one edge of the column cross section, and a tensile stress acts near the other edge. At this time, the compressive stress of the column is transmitted to the compressing block 53, and the compressive force can be resisted between the upper surface of the beam. Thereby, the force which a connection member, ie, a 1st volt | bolt, and a 2nd volt | bolt bears can be restrained small, and it can prevent reliably that a volt | bolt buckles.
In addition, this joining structure is one Embodiment of the invention which concerns on Claim 5, It can also be used for the junction part of a pillar and the beam supported on it.
[0044]
Further, in the above-mentioned column beam connection structure, as shown in FIG. 12, relative to the direction of the contact surface across both the end surface of the column 61 and the upper surface or the lower surface of the beam 62 that contacts the end surface. A shear resistance member 63 that restrains the displacement can be embedded.
The shear resistance member 63 is made of steel, and uses a short cylindrical ring-shaped member as shown in FIG. 12A, a pin 64 with an enlarged head diameter as shown in FIG. be able to. Then, recesses 61 a and 62 a for embedding the shear resistance member 63 are formed at positions where the end face of the column 61 and the upper surface of the beam 62 are opposed to each other, and when the column 61 is built on the beam 62, A shear resistance member 63 is inserted between the provided recess 61 a and the recess 62 a provided in the beam 62.
[0045]
In this joint structure, when a horizontal force acts on the joint surface between the column 61 and the beam 62, the shear resistance member 63 is locked to the recess 61 a of the column 61 or the recess 62 a of the beam 62, and the column 61 and the beam 62. Can be restrained from relative displacement in the direction of the contact surface.
In addition, this joining structure is one Embodiment of the invention which concerns on Claim 6, It can also be used for the junction part of a pillar and the beam supported on it.
[0046]
FIG. 13: is a schematic perspective view which shows the shape of the edge part of the column used with the junction structure which is other embodiment of this invention.
In this column 71, notches 71a provided at both end portions in the long side direction of the end surface are provided within the width in the short side direction, and both side surfaces 71b in the long side direction protrude so as to cover the notch portions. It has a structure. As the screw member screwed into the column from the notch 71a and the connecting member connected to the beam, the same joining structure as shown in FIGS. 2 to 4 can be used.
[0047]
By making the notch part provided in the pillar into such a shape, it is possible to improve the appearance from the long side of the pillar cross section, exposing the wide side of the pillar in the living room, This surface can be used as an interior surface.
[0048]
【The invention's effect】
As described above, in the beam-column joint structure according to the present invention, the column end surface can be brought into contact with and joined to the upper or lower surface of the bridge, and a bending moment can be reliably transmitted between them. . And since the screw member screwed into the column or the beam is connected by the connecting member to transmit the force in the axial direction of the column, there is no loosening, and a joining structure having high rigidity can be obtained.
[Brief description of the drawings]
FIG. 1 is a schematic perspective view showing a structural frame of a wooden building in which a column beam joint structure of the present invention is suitably used.
FIG. 2 is a schematic perspective view showing a column beam connection structure according to an embodiment of the present invention.
FIG. 3 is a cross-sectional view showing a column beam connection structure according to an embodiment of the present invention, and shows a cross section parallel to a plane including an axis of a rigid frame structure.
FIG. 4 is a cross-sectional view showing a column beam connection structure according to an embodiment of the present invention, and is an enlarged view showing a cross section in a direction perpendicular to a plane including an axis of a rigid frame structure.
FIGS. 5A and 5B are a plan view and a front view of a screw member used in the column beam connection structure shown in FIGS.
6 is an exploded perspective view of the column beam connection structure shown in FIGS. 2 to 4. FIG.
7 is an exploded perspective view of the beam-column joint structure shown in FIGS. 2 to 4. FIG.
FIG. 8 is a schematic diagram illustrating an operation when joining a column and a beam.
9 is a schematic perspective view showing a structure in which another beam is joined to the column beam joining portion of the structure shown in FIGS. 2 to 4. FIG.
10 is a plan view, a front view, and a side view of a screw member used at a portion where the beam shown in FIG. 9 is joined to another beam.
FIG. 11 is a schematic perspective view showing a beam-column joint structure according to another embodiment of the present invention.
FIG. 12 is a schematic perspective view showing a beam-column joint structure according to another embodiment of the present invention.
FIG. 13 is a schematic perspective view of an end portion of a column used in a beam-column joint structure according to another embodiment of the present invention.
[Explanation of symbols]
1,3 pillars
2, 4 beams
11,12 Screw member
13 Connecting member
21 First bolt
22 Second bolt
23 Connecting nut
31 pillars
32, 33 beams
40, 41, 44 Screw member
42 volts
43 Beam joints
45 pin
51, 61, 71 pillars
52, 62 beams
53 Compressed blocks
54,55 Screw member
56 Connecting member
63, 64 Shear resistance member

Claims (6)

It is a joining structure of a wooden beam erected in the lateral direction and a wooden pillar joined with its end face abutting against the upper or lower surface of this beam,
The column has a larger cross-sectional dimension in the axial direction of the beam than the cross-sectional dimension in the width direction of the beam,
Screw members each having a spiral projecting portion on the outer periphery are screwed into two vertical holes provided at predetermined intervals in the beam,
Notches are provided at both ends in the long side direction of the end surface at the lower end or upper end of the column,
Holes are provided in the axial direction of the pillars from the notches, and screw members are screwed into the holes,
The central part in the long side direction of the end surface of the column is in contact with the upper surface or the lower surface of the beam,
An end of the screw member embedded in the beam and an end of the screw member embedded in the column are connected by a connecting member. 2. The beam-column joining structure according to claim 1, wherein the connecting member has a drawing mechanism that draws two screw members to be connected in the axial direction thereof. The connecting member is provided in the axial direction from a first bolt screwed into a screw hole provided in an axial direction from an end surface of the screw member embedded in the column, and from an end surface of the screw member embedded in the beam. A second bolt that is screwed into the screw hole, and a connecting nut that connects the ends of these bolts opposite to the ends screwed into the screw members;
2. The screwed portion between one of the first bolt and the second bolt and the connecting nut is a reverse screw having a screw thread gradient in a reverse direction. Column beam connection structure of description. The bolt, which is either the first bolt or the second bolt and has a forward thread over its entire length, abuts against the end face of the connecting nut and is connected to the connecting nut. The beam-to-column connection structure according to claim 3, wherein a stopper for limiting a screwing length of the beam is provided. 5. The compression block according to claim 1, further comprising a compression block that is interposed between an upper surface or a lower surface of the beam and the column in the notch and resists a compressive force in an axial direction of the column. The column beam connection structure described in Crab. The end surface of the column and the upper surface or the lower surface of the beam in contact with the end surface are embedded across both, and a shear resistance member is embedded to restrain relative displacement in the direction of the contact surface. The column beam connection structure according to any one of claims 1 to 5, wherein:

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