JP7348670B2 - Architectural fittings - Google Patents

Description

The present invention is an architectural joining fitting for joining one column or horizontal member (beam) to another horizontal member (beam) with their ends abutting, and for example, A connecting board part is fixed to the joining side surface with a fixture (a fixing bolt passed through), and a connecting board part is provided protruding from the joint part of the end of the other beam whose ends are butt-joined. A connecting metal fitting for construction that connects one column or beam to the other by inserting and arranging a protruding connecting plate part and passing a connecting tool (drift pin) through this through the joint part. It is related to.

For example, when joining a column on one side and a horizontal member (beam) on the other, architectural joining metal fittings are often used. This joining fitting is, for example, a metal fitting in which one or more connecting protruding plate parts are provided in a T-shape, U-shape, or U-shape in plan view on a metal connecting board part. is fixed to the joining side surface of one of the beams with a fixing device (a fixing bolt that passes through the pillar), and the connecting protrusion plate protruding from this connecting base plate is attached to the end of the other beam. A connecting tool (drift pin) is inserted into the upper and lower through-slits of the connecting part, and is inserted into the connecting hole provided in the connecting protruding plate part and the through hole provided in the connecting part of the end of the beam that communicates with the connecting hole. ) is a joint fitting that connects through the pillars and firmly connects one column and the other beam.

Conventionally, various configurations have been proposed for such joint fittings for construction, but even if the joint strength is increased, the influence of the wood strength increases.For example, if a large shear force is applied to a beam from above and below, Cracks (splits) may occur from the through holes that connect the drift pins of the joints at the ends of the beams, but these cracks occur due to variations in strength due to individual differences in wood. The timing can vary.

For example, if a larger than expected load is applied to the upper floor or roof, a larger than expected snow load is applied, or a large shock is applied due to an earthquake, etc. There is a risk that the beam will not be able to withstand the shearing force it receives, and splitting will occur through the through hole through which the connector at the end of the beam passes, and the timing at which splitting will occur is likely to vary.

The maximum load of the joint against shear force and the maximum load of the joint against tensile force are greatly influenced by the strength performance of the wood, but even if wood with high strength performance is selected, the wood is not suitable for construction. Among the structural materials used in construction, brittle fracture is relatively easy to occur, and there are individual differences, and strength performance changes depending on environmental conditions such as temperature and humidity, so strength stability is low. low. In other words, if the maximum load at a joint depends on the strength performance of the wood, the joint's yield strength becomes unstable, and it is not easy to manage the joint's yield strength to prevent damage or destruction of the joint. Therefore, the joint yield strength had to be set low by a reduction factor that takes into account variations in strength.

Therefore, conventionally, the connecting protruding plate part is closer to the proximal end, that is, the connecting base plate fixed to the column, than the position where the connecting tool (drift pin) on the distal side is inserted (multiple connecting hole rows provided in the vertical direction). A plurality of deformation promoting openings are deliberately formed at intervals in the vertical direction of the proximal end to promote deformation by shearing force, and this metal joining fitting (the plate surface direction of the connecting protruding plate part is the vertical direction) is formed at intervals. Therefore, it is possible to stabilize the strength of the joint by deforming the metal joint (metal fittings with high shear performance), which has a large maximum load value at the joint against shear forces from above and below. Proposed.

In other words, for example, when a larger than expected shear force is applied downward from the top of a beam, the multiple deformation-promoting openings promote the downward deformation of the joint before the wood (beam) is damaged. The load value at which this deformation begins is set lower than the maximum load value at the joint where the wood splits, and the maximum load value for the shear force at the joint is controlled, and the Even if there are variations in the maximum load value, the strength performance of the joint can be stabilized, and this will stabilize the joint yield strength, and the reduction factor due to variation that determines the joint yield strength will become larger (reduction coefficient is set between 0 and 1, and as this value approaches 1, the yield strength of the joint increases.) A joint metal fitting has been proposed.

To explain further, when brittle fracture occurs in a joint, it means that the toughness is low and the energy absorption performance against loads is reduced, so in such cases, when an unexpected load is applied, This is not preferable because there is a relatively high risk of sudden destruction. In other words, it is structurally important to not only ensure strength performance but also deformation performance (toughness). The amount of deformation that causes wood to break varies depending on its individual differences, and it is relatively prone to brittle fracture, so it is extremely difficult to impart toughness and stably exhibit energy absorption performance against loads.

On the other hand, metal fittings have relatively high toughness and relatively stable deformation. , which is expected to ensure the toughness of the joint, has been proposed.

However, if a plurality of openings are simply provided as deformation-promoting openings in the vertical direction of the connecting protrusion plate, the joint will easily deform, and the maximum load of the joint against shear force will be reduced. Although it is possible to intentionally stabilize the value, it is not easy to adjust and set the joint yield strength. That is, if the total opening area is increased by simply making the deformation promoting openings larger or increasing the number thereof, the rigidity may decrease all at once, and the yield strength of the joint, which determines the yield strength of the joint, may be lowered too much.

In addition, when the deformation of this deformation-promoting opening becomes dominant, the entire joint fitting rotates to the column side, which causes secondary stress (couple) in the connecting fitting, which induces splitting and gives the joint part a proof stress. There is a risk that the deformation may occur, and the ability to deform while maintaining a certain degree of yield strength may be lost. This becomes more noticeable as the position connected by the connector is farther away from the connection substrate portion. Therefore, simply providing a plurality of deformation promoting openings in this manner does not easily stabilize the structural strength of the joint, and is therefore impractical.

Furthermore, if the strength performance is increased too much by simply reducing the total opening area of the deformation promoting openings, the strength performance will be unstable due to individual differences in wood when shear force is applied, as mentioned above. Therefore, the wood is suddenly destroyed, and it is difficult to adjust and set the maximum load value of the joint so that it does not vary just by adjusting the opening area. In other words, it is difficult to induce the intended collapse type while maintaining rigidity simply by adjusting the total opening area of the deformation promoting openings, so it is difficult to induce the intended collapse type while maintaining rigidity. It is not easy to adjust. Therefore, it is thought that joint fittings having such deformation-promoting openings have not been widely realized.

In view of the current situation, the present invention solves the above problem, and includes a plurality of connection hole rows in the vertical direction in which a connection tool is passed through the connection protrusion plate part. A large number of connectors are passed through and connected to the plurality of upper and lower connection holes and the plurality of rows of connection holes to increase the connection strength between the connection protrusion plate part and the horizontal member, thereby increasing the joint strength of the joint part. At the same time, a plurality of deformation-promoting openings are provided in the vertical direction, and further, the vertical deformation of the metal fittings with increased connection strength is promoted with these multiple rows of connectors, and the deformation of the deformation-promoting openings becomes dominant, thereby forming a bond. The connecting hole position additional deformation promoting opening that deforms and absorbs the secondary stress generated when the entire metal fitting rotates is also provided at the upper end of this connecting hole row, or between the connecting holes in the connecting hole row, or between the connecting hole rows. By using this simple opening configuration, it is possible to maintain high connection strength of the joint metal fittings, and to easily deform the entire joint metal fittings in advance before the wood breaks, and also to reduce the secondary stress. By being able to absorb this, it is possible to continue deforming the entire joint while supporting the load to some extent before the wood is damaged or destroyed. Therefore, the maximum load value and toughness of the joint do not become unstable, and the joint does not become unstable. The purpose of the present invention is to provide extremely practical architectural joining fittings whose performance can be easily improved.

The gist of the present invention will be explained with reference to the accompanying drawings.

An architectural joining fitting that connects one pillar 1 or horizontal member 2 and the horizontal member 2 to be joined with their ends abutted to join them together , It is disposed at the joint part 5 of the other horizontal frame member 2 and is connected to the connecting base plate part 4 which is fixed to the frame member 2 by the fixing tool 3 with its ends abutting, and is connected through the joint part 5. A connecting protruding plate portion 7 is provided to connect to the other horizontal member 2 by a connecting member 6 inserted through the connecting member 6, and the joint portion 5 at the end of the other horizontal member 2 is connected to the connecting member 6. The connecting protruding plate portion 7 arranged in the connecting member 6 and connected by the connecting member 6 is provided with a plurality of hole-shaped or cut-out connecting holes 8 in the vertical direction through which the connecting member 6 penetrates. A plurality of rows of holes 9 are provided at intervals in the protruding direction of the connecting protruding plate portion 7, and the connecting protrusions 9 are arranged at intervals in the protruding direction of the connecting protruding plate portion 7. The connecting protrusion is applied to the connecting board part 4 by the vertical shearing force received by the horizontal member 2, which is connected by the connecting members 6 through which the connecting members 6 are inserted in a plurality of upper and lower rows. When the deformation promotion openings 10 that promote vertical deformation of the installation plate portion 7 are arranged in order from the proximal end side in the protrusion direction, the connection hole row 9 in the first row and the connection A plurality of holes are provided at intervals in the vertical direction with respect to the base plate portion 4, and a position along the first row of connecting holes 9 on the proximal end side, or a connecting hole in the first row. A connection between the hole row 9 and the second row of connecting holes 9 on the tip side or the subsequent connecting hole rows 9 to facilitate the deformation of the other horizontal member 2 due to the shearing force applied thereto. The present invention relates to an architectural joining fitting characterized in that a hole position additional deformation promoting opening 11 is provided.

Further, the connecting hole position additional deformation promoting opening 11 for supporting multiple rows of connections is provided at least at an upper end position along the connecting hole row 9 of the first row on the proximal end side. 2. A construction fitting according to claim 1, characterized in that:

Further, the connecting hole position additional deformation promoting opening 11 for supporting multiple rows of connections is located at a position along the connecting hole row 9 in the first row on the proximal end side, and in the first row on the proximal end side. 3. A plurality of connecting hole rows 9 are provided at intervals in the vertical direction between the connecting hole row 9 and the connecting hole rows 9 subsequent to the second row on the distal end side. It pertains to the architectural joint metal fittings described in item 1.

In addition, at the distal side position between the plurality of deformation promoting openings 10 provided in the vertical direction between the connecting hole row 9 of the first row on the base end side and the connecting substrate part 4, the other An additional opening 12 on the front end side between the deformation promoting openings that promotes deformation due to the shear force applied to the horizontal member 2 is provided separately from the connecting hole position additional deformation promoting opening 11 or for promoting deformation at the connecting hole position. 4. The architectural joining fitting according to claim 1, wherein a plurality of openings 11 are provided at intervals in the vertical direction.

Since the present invention is configured as described above, a plurality of connecting hole rows are provided in the vertical direction in the connecting protrusion plate portion for allowing the connecting tool to pass therethrough, and a plurality of connecting hole rows are provided in the protruding direction. A large number of connectors are passed through and connected to these multiple rows of connecting holes to increase the strength of the connection between the connecting protruding plate and the horizontal member, thereby increasing the joint strength of the joint, and reducing the deformation promoting opening. Multiple rows of connectors are provided in the vertical direction, and these multiple rows of connectors increase the connection strength, promoting vertical deformation of the metal fittings, and the deformation of these deformation promoting openings becomes dominant, resulting in the rotation of the entire joint metal fittings. The connecting hole position additional deformation promoting opening that absorbs deformation of secondary stress is also provided at the upper end of the connecting hole row, or between the connecting holes in the connecting hole row, or between the connecting hole rows. By maintaining the connection strength of the joint metal fittings at a high level through the opening arrangement, it is possible to easily deform the entire joint metal fittings in advance before the wood breaks, and by absorbing the secondary stress, damage to the wood can be prevented.・It is possible to continue deforming the entire joint while supporting the load to some extent prior to fracture, so the maximum load value and toughness of the joint do not become unstable, making it easy to improve the performance of this joint. This makes it an extremely practical architectural joint.

FIG. 2 is a perspective view of this embodiment. FIG. 3 is a side view of this embodiment. FIG. 2 is a plan view of this embodiment. FIG. 3 is a front view of this embodiment. It is an explanatory perspective view of the usage state of this example. It is an explanatory side view of the use state of this example. FIG. 3 is an explanatory side view showing the state of deformation with broken lines when shear force and secondary stress of the present example are applied.

DESCRIPTION OF THE PREFERRED EMBODIMENTS An optimal embodiment of the present invention will be briefly described based on the drawings, showing the effects of the present invention.

When joining one column 1 or horizontal member 2 (beam) to the other horizontal member 2 (beam), attach a fixing device 3 (a fastening bolt to be passed through) to this one column 1 or horizontal member 2. ) to fix the connecting board part 4, and insert the connecting tool 6 (drift pin) into the joint part 5 of the other horizontal member 2 (beam) to be joined with the ends abutted. The connecting protruding plate portion 7 is connected to the other horizontal member 2 to join them together.

The connecting protruding plate portion 7 of the main joint fitting which is disposed at the joint portion 5 at the end of the horizontal member 2 and connected by the connecting tool 6 has a hole-shaped or A plurality of connection hole rows 9 each having a plurality of notch-shaped connection holes 8 in the vertical direction are arranged at intervals in the length direction of the other horizontal member 2 (in the protruding direction of the connection protruding plate portion 7). It is set up. Note that lining up in the vertical direction (column) does not mean only when the centers of the openings are lined up in a straight line in the vertical direction, but also when the holes, openings, and notches are almost lined up in the vertical direction even if they are slightly shifted from side to side. This term refers to the state in which they are arranged in a row.

In the joint portion 5 at the end of the horizontal member 2, a plurality of through holes 13 communicating with the connecting hole 8 are also provided in the vertical direction and in a plurality of rows at intervals in the projecting direction. There is.

Therefore, the connecting projecting plate part 7 protruding from the connecting board part 4 fixed to the connecting side surface of one of the pillars 1 or the horizontal members 2 (beams) has multiple rows of through holes in the upper and lower parts. By inserting a connecting tool 6 (drift pin) into a connecting hole 8 which is in communication with this via 13, the connecting member 6 is connected to the joint portion 5 of the other horizontal member 2.

In the present invention, when a downward shearing force is applied to the other horizontal member 2, for example, from the top, the first row aligned in the vertical direction on the proximal end side in the protruding direction (the length direction of the horizontal member 2) A plurality of deformation promoting openings 10 provided in the vertical direction between the connecting hole row 9 and the connecting substrate part 4 are deformed in the vertical direction, and the joining fitting (the connecting protruding plate part 7) is moved downward. Plastically deforms.

For example, a rectangular opening is deformed downward into a parallelogram shape, a round hole-like opening is deformed into a downwardly elongated ellipse, and a vertically slit-like opening is further deformed into a long hole. As the deformation promoting opening 10 deforms in advance of the (horizontal frame member 2) without causing brittle failure, the entire joining fitting deforms in the vertical direction, which is largely influenced by individual differences in wood. The maximum load value and toughness can be stabilized, and variations in structural performance will be reduced.

Moreover, the present invention can also be applied to a position along the first row of connecting hole rows 9 arranged in the vertical direction on the proximal end side, or in a position along the first row of connecting hole rows 9 arranged in the vertical direction on the proximal end side. 9 and the second row of connecting holes 9 arranged in the vertical direction on the tip side or the connecting hole rows 9 after that, there is also a plurality of rows of connecting hole rows 9 for promoting deformation due to the shear force received by the horizontal member 2. Since the connecting hole position additional deformation promoting openings 11 are provided, that is, two or more rows of openings that perform the deformation promoting function including the deformation promoting openings 10 are provided at intervals in the protrusion direction. The multi-row connection structure with more than one row of connectors 6 allows the proof stress of the joint, that is, the maximum load value of the joint, to be kept high so that it does not become too low, and also has the function of gradually accelerating deformation when shear force is applied. In addition to this deformation promoting opening 10, the secondary stress (horizontal couple generated in the connector 8) due to the rotation of the entire joint metal fittings in the second and subsequent rows of connectors 6 is also added. This can be absorbed by the deformation promoting action of the connecting hole position additional deformation promoting opening 11.

In other words, since there are multiple rows of deformation acceleration mechanisms, each row deforms in stages, so the deformation acceleration function is enhanced compared to a single row, and rigidity is ensured while maintaining deformation performance (toughness). Ru. In other words, the connection strength is increased because the connectors 6 are connected in two or more rows of upper and lower rows, and multiple rows of openings that exhibit a deformation promoting function are also provided, and the deformation promoting openings 10 are provided in the vertical direction of the first row. In addition to this deformation promoting opening 10, a second row of connecting hole position additional deformation promoting openings 11 is provided to promote deformation in stages, thereby ensuring rigidity. , exerts a deformation acceleration function in stages in response to shear force, causing downward plastic deformation, and also absorbs the secondary stress (couple) generated in the connector 6 by rotating the entire joint. It is also possible to delay sudden damage caused by splitting of the wood due to secondary stress caused by the force.

Furthermore, in the present invention, in addition to the plurality of deformation promoting openings 10 in the vertical direction, the connecting hole position additional deformation promoting openings 11 are added in parallel, so that these can be improved without reducing the rigidity. Due to the deformation accelerating effect, it is possible to plastically deform the joining fittings prior to the destruction of the wood, and furthermore, as mentioned above, it is possible to absorb the secondary stress generated in the connector 6 and delay the destruction of the wood. This structure further improves and stabilizes the strength and toughness in the shear direction at the joint.

Therefore, in the present invention, it is possible to secure the joint strength by connecting with a plurality of rows of connectors 6, and to suppress variations in the maximum load value by the deformation promoting effect of the additional connecting hole position deformation promoting opening 11. Since the structure also absorbs secondary stress, toughness is ensured, making it easy to stabilize the joint yield strength and toughness.

A concrete example 1 of the present invention will be described based on the drawings.

In this embodiment, the present invention is applied to an architectural joining metal fitting (beam support joining metal fitting) that joins a column 1 and a horizontal member 2 (beam) whose ends are abutted and orthogonally joined to the pillar 1. Then, the ends are abutted against the connecting board part 4 which is fixed to the connecting side surface of the column 1 with a fixture 3 (means for fixing by tightening a nut to a fixing bolt passed through the column 1 from the outside), and the ends are brought into a perpendicular state. A plurality of connectors 6 (drift pins) are inserted and arranged in the joint part 5 (vertical through slit) of the horizontal frame member 2 (beam) to be joined to the horizontal frame member 2, and connected to the horizontal frame member 2 by driving a plurality of connectors 6 (drift pins) from the lateral direction. The connecting fitting is constructed as a metal architectural joining fitting having a T-shape in plan view and having a protruding connecting plate portion 7 provided thereon.

In addition, in this embodiment, the connecting protruding plate of the main fitting is inserted into the connecting part 5 (vertical through slit) at the end of the horizontal member 2 and connected by the connecting tool 6 (drift pin). In the longitudinal direction of the horizontal member 2, the section 7 is provided with a connecting hole row 9 in which a plurality of connecting holes 8 are vertically provided, each having a hole shape through which the connecting tool 6 (drift pin) passes, and a notch shape at the end. That is, two rows are provided at intervals in the protrusion direction, which is the direction away from the pillar 1.

In addition, a plurality of connection holes 8 are provided at intervals in the vertical direction on the connection projection plate 7 which is provided in a projection on the base plate 4, and a plurality of connection holes 8 are provided at intervals in the projection direction. The connecting tools 6 (drift pins) are inserted in two rows, upper and lower, into the horizontal member 2 from the lateral direction perpendicular to the length direction of the horizontal member 2 through the through-holes 13 of the joint portion 5. The configuration is such that they are connected.

Specifically, the first row of connecting holes 8 arranged in the vertical direction on the proximal end side in the protrusion direction has four round holes spaced apart in the vertical direction, and two of these holes are connected to the connecting tool 6. In addition, the second row of connecting holes 8 arranged in the vertical direction on the distal end side includes notches and round holes at the upper and lower ends. Six locations are provided at intervals in the vertical direction, and three of the spaces are provided (used) as connection holes 8, for a total of five locations, two in the first row and three in the second row. The connecting tools 6 are inserted into the connecting holes 8 of the horizontal members 2 and connected to the horizontal members 2, respectively.

In addition, in this embodiment, when the horizontal member 2 receives a downward shearing force from the upper part, the deformation promoting opening 10 that promotes downward deformation (yielding) is provided in the vertical direction on the base end side. A plurality of connecting hole rows 9 are provided at intervals in the vertical direction between the first row of connecting holes 9 and the connecting substrate portion 4.

Specifically, this embodiment has a configuration in which vertically rectangular and approximately square openings are alternately formed (arranged) in rows at equal intervals in the vertical direction.

Further, in this embodiment, a position along the first row of connecting hole rows 9 arranged in the vertical direction on the proximal end side, a position along the first row of connecting hole rows 9 arranged in the vertical direction and a distal side from this The horizontal member 2 is also received between the connecting hole row 9 of the second row arranged in the vertical direction and at a position along the second row of connecting hole row 9 arranged in the vertical direction on the tip side. It has a structure in which a connecting hole position additional deformation promoting opening 11 for supporting multiple row connections is provided to promote deformation due to shear force. That is, in addition to the deformation promoting openings 10 in the first row, a second row is located along the connecting hole rows 9 of the first row, a third row is between the connecting hole rows 9, and a fourth row is located between the connecting hole rows 9. Connecting hole position additional deformation promoting openings 11 are provided at positions along the second connecting hole row 9, thereby providing a total of four rows of openings that perform the deformation promoting function.

Further, the connecting hole position additional deformation promoting opening 11 for supporting multiple rows of connection in the second row of this embodiment is arranged along the connecting hole row 9 of the first row on the base end side that is arranged in the vertical direction. It is provided between the upper end position, the lower end position and the connecting hole 8.

Specifically, openings that are slightly vertically rectangular and slightly larger than the connecting holes 8 are formed at the upper and lower end positions of the connecting holes 8 in the two vertical directions of the first row to promote additional deformation of the connecting holes. In addition to forming the openings 11, an opening in the same circular hole shape as the connecting holes 8 is also formed between the connecting holes 8 as the connecting hole position additional deformation promoting openings 11.

Further, the connecting hole position additional deformation promoting opening 11 for connecting multiple rows in the third row of this embodiment is connected to the connecting hole row 9 in the first row arranged in the vertical direction on the base end side and the connecting hole row 9 in the first row arranged in the vertical direction on the base end side. A plurality of holes are provided at intervals in the vertical direction between the second row of connecting holes 9 arranged in the vertical direction.

Specifically, vertically elongated slit-shaped openings (elongated holes elongated in the vertical direction) are formed at intervals in the vertical direction between two rows of connecting hole rows 9 arranged in parallel at intervals in the protrusion direction. Two holes are formed, and these are formed as the connecting hole position additional deformation promoting openings 11 which are the third row of openings that also perform the deformation promoting function.

Therefore, the connecting protruding plate parts 7 protruding from the base plate part 4 fixed to the connecting side surface of the pillar 1 are provided in a plurality of upper and lower parts and inserted into two rows of connecting holes 8 in the direction away from the pillar 1. Since it is connected to the horizontal member 2 using a book connector 6 (drift pin), the connection strength is strong, and when a downward shearing force is applied to the horizontal member 2, for example from the top, the proximal end The first row of deformation promoting openings 10, which are provided in the vertical direction between the first row of connecting hole rows 9 arranged in the vertical direction on the side and the connecting substrate section 4, are deformed and the main joining fittings are vertically disposed. This promotes plastic deformation in the direction, and furthermore, as the main joint fittings try to rotate, secondary stress occurs particularly in the connecting fittings 6 that are far from the column 1, but this also occurs in the second, third, and fourth rows. By deforming the connecting hole position additional deformation promoting opening 11, which is the eye, in stages, it can efficiently absorb the stress, and by delaying the destruction of the wood due to secondary stress, the joint can continue to be deformed in the vertical direction. It is composed of

Therefore, while the connection strength is maintained high by the two rows of connectors 6, the maximum load value for shear force can be more easily stabilized by this deformation promoting effect than the unstable maximum load value that depends on wood. Moreover, as mentioned above, the position along the first connecting hole row 9 arranged in the vertical direction on the proximal end side, and in this embodiment, the position along the first connecting hole row 9 and the second connecting hole row on the distal side. A connecting hole position additional deformation promoting opening 11 for supporting multiple row connections is also provided between the connecting hole rows 9 of the rows, etc., so that the horizontal member 2 is deformed in stages due to the shear force applied to it. In order to accelerate this and further absorb the secondary stress due to rotation, as mentioned above, the second row of connectors 6 (drift pins) can maintain a high connection strength, that is, the maximum load value, and prevent the rigidity from becoming too low. The yield strength of the joint can be easily adjusted and set to an appropriate value, and further secondary stress in the second row connector 6 can be well absorbed by the deformation accelerating action of the additional deformation accelerating opening 11 at the connecting hole position. This makes it possible to suppress damage caused by splitting of wood caused by secondary stress caused by shearing force, thereby further improving and stabilizing the strength and toughness of the joint in the shear direction.

That is, as described above, after securing the connection strength with the configuration in which multiple rows of connectors 6 are connected, variations in the maximum load value are suppressed by the deformation promotion effect of the additional connection hole position deformation promotion opening 11. Since the structure also absorbs secondary stress, it becomes easy to stabilize the joint strength and toughness.

Therefore, with this simple opening configuration, it is possible to maintain high connection strength of the metal fittings and to easily suppress variations in the maximum load value, which is unstable due to the influence of individual differences in wood, etc. By being able to absorb secondary stress, it is possible to continue deforming the joint in the vertical direction until the end of the joint metal fittings, prior to damage or destruction of the wood. Therefore, the maximum load value does not become unstable and the joint It is possible to improve and stabilize the strength and toughness in the shear direction, making it easier to manage the safety of joints.

Furthermore, in this embodiment, the distal side position between the plurality of deformation promoting openings 10 provided in the vertical direction between the first connecting hole row 9 on the proximal end side and the connecting substrate section 4 is provided. Also, a plurality of additional openings 12 on the front end side between the deformation promoting openings are provided at intervals in the vertical direction to promote deformation due to the shear force applied to the horizontal member 2.

Specifically, in this embodiment, the deformation promoting openings 10 are provided in one row above and below, and the deformation promoting openings 10 are added on the distal end side (on the side away from the column 1) in a staggered manner between the deformation promoting openings 10. The openings 12 are provided to maintain high connection strength by arranging the connectors 6 in a plurality of rows, and furthermore, in addition to the deformation promoting effect provided by the deformation promoting openings 10, the deformation promoting function is exerted in stages to cause the deformation. By arranging the connectors 6 in two rows, it is possible to absorb the secondary stress in the connectors 6 located further away from the column 1 (because they are further away from the column 1, the overturning moment increases, resulting in a large secondary stress). The structure is configured so that the wood continues to deform in the vertical direction by further delaying the destruction of the wood.

By arranging them in a staggered manner in this manner, the deformation promoting function is exerted in a stepwise manner as described above, and rigidity can also be ensured. Further, by bringing the position of the connector 6 close to the opening that performs the deformation promoting function in this manner, deformation due to shear force and deformation due to tension due to secondary stress (couple) are also improved.

In this embodiment, the deformation promoting openings 10 and the additional openings 12 on the tip side between the deformation promoting openings provided in a staggered manner are formed separately from the connecting hole position additional deformation promoting openings 11. Rather, it is configured to also serve as a connecting hole position additional deformation promoting opening 11 provided at a position along the first row of connecting holes 9 arranged in the vertical direction on the base end side, that is, between the connecting holes 8.

In addition, in this example, the arrangement of these openings and holes (including the notch) is vertically symmetrical, and even if it is installed upside down, the arrangement is the same and the same effect is achieved. This is an example. Note that the connecting hole position additional deformation promoting openings 11 having the same diameter between the connecting holes 8 may be used as the connecting holes 8 in this way, and the same effect will be exhibited.

To explain further, in this example, each opening is set to perform a tensile deformation function while promoting shear deformation, but since it is necessary to ensure rigidity while promoting deformation, the deformation promotion function is The number of the deformation promoting openings 10, which are the openings in the first row, is the same as the number of connectors 6 (five in this embodiment), and they are vertically symmetrical with respect to the center in the vertical direction. A total of five shaped openings and approximately square openings are arranged in a row at alternating intervals, and the vertical interval is 50 to 100% of the opening width. The distance from the connecting hole 8 in the first row to the connecting substrate part 4 is 25 to 40%, and the ratio of the opening width to the opening vertical width is within the range of 1:1 to 2, and the total opening vertical width, that is, the opening The ratio of the total height to the total height of the main joining metal fittings is within the range of 1:1.4 to 1.6.

Furthermore, if the first row of deformation promoting openings 10 are too close to the connection substrate 4, the connection substrate 4 may be deformed, leading to a decrease in rigidity and an increase in the couple force due to the rotation of the metal fittings. Therefore, it is necessary to maintain a certain distance. Therefore, the distance from the connecting protruding plate part 7 side surface of the connecting base plate part 4 fixed to the pillar 1 is set within a range of 100 to 150% of the width of the opening.

Further, the connecting hole position additional deformation promoting openings 11, which are the openings in the second row that perform the deformation promoting function, are provided along the first connecting hole row 9 as described above. A round hole with approximately the same diameter (0 to 2 mm of the diameter of the connector 6) is provided between the connecting holes 8 lined up to form the connecting hole position additional deformation promoting opening 11, and a hole slightly larger than this is also formed at the upper and lower ends. A larger round hole or a slightly elongated opening (opening area of 150 to 250% of the opening area of the connecting hole 8) is provided to form the connecting hole position additional deformation promoting opening 11, and constitutes the second row.

Further, the connecting hole position additional deformation promoting opening 11 between the connecting holes 8 is such that the distance from the proximal side edge to the distal side edge of the deformation promoting opening 10 is the same as that of the connecting tool 6 used for this connecting hole 8. It is placed at a position that is 50 to 100% of the diameter.

Further, in this embodiment, the connecting hole position additional deformation promoting openings 11 between the connecting holes 8 are arranged as the additional openings on the tip side between the deformation promoting openings arranged in a staggered manner with the deforming promoting openings 10 of the first row. 12 (the additional opening 12 on the tip side between the deformation promoting openings is also used as the connecting hole position additional deformation promoting opening 11).

Further, as described above, the connecting hole position additional deformation promoting opening 11, which is the third row of openings that performs the deformation promoting function, is connected to the first connecting hole row 9 arranged in the vertical direction on the base end side. A plurality of openings are provided in the vertical direction between this and the second row of connecting hole rows 9 arranged in the vertical direction on the distal end side, and two long hole-shaped openings are provided at intervals in the vertical direction. It is said that The vertical position of the elongated third row connecting hole position additional deformation promoting opening 11 is such that its center position has the same shape as the circular connecting hole 8 of the first row. The connecting hole position additional deformation promoting opening 11 is arranged so as to substantially coincide with the center position of the separation distance from the connecting hole position additional deformation promoting opening 11, and the vertical end position thereof is the round hole-shaped connecting hole position additional deformation promoting opening 11. and between the center of the connecting hole 8 and the hole edge position.

Further, an opening (connecting hole position additional deformation promoting opening 11) that functions to promote deformation of the second row of the connecting hole rows 8 is formed from the base end side edge of this elongated connecting hole position additional deformation promoting opening 11. The distance from the edge of the hole on the tip side (separation dimension) is 40 to 70% of the diameter of the connector 6.

Further, the width of this elongated connecting hole position additional deformation promoting opening 11 is set to 50 to 100% of the diameter of the connecting tool 6.

In addition to the three rows of openings that perform the deformation promoting function provided in this way, a fourth row, which has a weaker deformation promoting function, is provided at a position along the connecting hole row 9 of the second row in the vertical direction. Connecting hole position additional deformation promoting openings 11 are provided at intervals. Similar to the second row, this fourth row is located along the connecting hole row 9 of the second row, that is, the same round hole-shaped opening provided between the connecting holes 8 of the second row, and the opening provided at the lower end. The notch portions serve as connecting hole position additional deformation promoting openings 11, and are arranged at intervals in the vertical direction.

Therefore, although the function of the openings in the fourth row is weak, due to the additional deformation promoting openings 11 in the connecting holes in the second row, especially in the third row, deformation occurs near the connectors 6 in the second row, which are far from the columns. It performs a promoting function and a function of absorbing secondary stress that may particularly occur, and is configured to further improve the above-mentioned effects. Note that when the connecting hole position additional deformation promoting opening 11 in the fifth row is provided, the fourth connecting hole position additional deformation promoting opening 11 also exhibits the deformation promoting function and the secondary stress absorbing function. It turns out.

It should be noted that the present invention is not limited to this embodiment, and the specific configuration of each component such as the shape and number of openings provided in the connecting protrusion plate 7 may be changed depending on the shape of the connecting protrusion plate 7. It can be designed as appropriate.

1 Column 2 Horizontal member 3 Fixing tool 4 Connecting board section 5 Connection section 6 Connecting tool 7 Connecting projecting plate section 8 Connecting hole 9 Connecting hole row
10 Deformation promotion opening
11 Connection hole position additional deformation promotion opening
12 Additional opening on the tip side between the deformation promotion openings
13 Through hole

Claims (4)

An architectural joining fitting that connects one column or horizontal member to the other horizontal member whose ends are butted and joins the two,
It is disposed at the joint part of the other horizontal frame member, which is joined to the connecting board part fixed to one of the pillars or the horizontal frame member by a fixing tool, with the ends abutted, and this joint part is A connecting protruding plate portion is configured to protrude and connect to the other horizontal member by a connecting tool inserted through the connecting member,
The connecting protruding plate portion disposed at the joint portion at the end of the other horizontal member and connected by the connecting tool has a hole-shaped or notch-shaped connecting hole through which the connecting tool passes. A plurality of connecting hole rows are provided in the vertical direction, and a plurality of rows of connecting holes are provided at intervals in the protruding direction of the connecting protruding plate portion,
Due to the vertical shearing force received by the horizontal members, which are connected by the connecting tools, which are inserted through the connecting protruding plates disposed at the joints of the horizontal members in a plurality of rows, , a first configuration in which the deformation promoting openings that promote vertical deformation of the connecting protruding plate part with respect to the connecting base plate part are arranged in a row order from the proximal end side in the protruding direction; A plurality of connecting hole rows are provided at intervals in the vertical direction between the connecting hole rows and the connecting substrate portion, and
A position along the first connecting hole row on the proximal end side, or between the first connecting hole row and the second or subsequent connecting hole row on the distal end side, A joint metal fitting for construction, characterized in that a connecting hole position additional deformation promoting opening for supporting multi-row connection is provided to promote deformation due to shear force applied to the other horizontal member. The connecting hole position additional deformation promoting opening for supporting multiple rows of connections is provided at least at an upper end position along the connecting hole row of the first row on the proximal end side. The architectural joining fitting according to claim 1. The connection hole position additional deformation promoting opening for supporting multiple rows of connections is located at a position along the connection hole row of the first row on the base end side, and at a position along the connection hole row of the first row on the base end side. 3. A plurality of holes are provided at intervals in the vertical direction between the hole row and the connecting hole rows after the second row on the distal end side. Architectural fittings. The other horizontal member is placed at a distal end position between a plurality of deformation promoting openings provided in the vertical direction between the first row of connecting holes on the base end side and the connecting substrate section. An additional opening on the distal end side between the deformation promoting openings that promotes deformation due to the shear force received by the connecting hole position is provided separately from the connecting hole position additional deformation promoting opening or is used also as the connecting hole position additional deformation promoting opening, 4. The architectural joint according to claim 1, wherein a plurality of joints are provided at intervals in the vertical direction.

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