JP3941067B2 - Wooden frame - Google Patents

Description

  The present invention relates to a wooden frame that can ensure excellent seismic performance without using hardware.

  As is well known, traditional wooden architecture in Japan, represented by temples and shrines, is based on a wooden framework that combines pillars, long presses, ground cover and other members. And it is usual to use a metal part together in order to secure earthquake resistance while connecting each member based on a wooden frame.

  However, the use of hardware that is inevitable to corrode for many years in the wooden frame detracts from the excellent durability inherent in wooden construction (Horyu-ji is well over a thousand years). Therefore, it is desired to develop a modern wooden frame that can ensure excellent earthquake resistance with only a wooden frame without using any hardware.

In the present invention, a pillar is built on a foundation stone, a ground cover is connected to a column base, a braid is provided on the head of the pillar, and a plate is attached to a range surrounded by the elbow tree through the bracelet and the head penetration. In a wooden frame, stepped engagement that engages both the upper edge of the plate and the through elbow and both the lower edge and the head of the plate and regulates the horizontal displacement of the plate. And a hemispherical convex portion is formed on the top surface of the foundation stone , and a hemispherical concave portion that fits the convex portion is provided on the bottom surface of the column, and the convex portion and the concave portion are fitted to each other. The structure allows the column to be inclined and lifted by horizontal force .

The wooden frame of the present invention has a step that connects the ground cover to the column base, attaches the assembly and the plate to the column head, and regulates the horizontal displacement of the plate to both the plate and the through elbow and the head penetration. Since the shaped engaging portion is provided, the ground cover and the slats can restrain the deformation of the shaft set and improve the seismic performance.
Further, since the configuration allowed to permit column sloped and floating of at the time of receiving the horizontal force by Tatekomu pillars in a state where the fitting the recess formed in the convex portion and the columnar leg provided on the foundation stone, earth Combined with the constraining effect by covering, it is possible to effectively prevent the column base from being damaged. Moreover, the entire shaft assembly exhibits a sufficient restoring force against the inclination, and the seismic performance can be further improved.

  Prior to the embodiment of the present invention, a wooden frame as a reference example related to the present invention will be described first. FIG. 1 shows a wooden frame as a reference example, and details of II, III, and IV in FIG. 1 are shown in FIGS. 2, 3, and 4, respectively. The wooden frame of this reference example is composed of a pillar 1, a head penetration 2, a long press 3, and a ground cover 4. A head penetration 2 is connected to the pillar head of the pillar 1 by a wooden frame shown in FIG. In other words, a cross-shaped groove 5 is formed by carving in the column head, and the two-way head perforations 2 are dropped into and inserted into the groove 5. Further, both of the head penetration 2 and the groove 5 are formed with engaging portions 6 having sliding slope surfaces for sliding in contact with each other when the head penetration 2 is dropped and tightening the column head inward in the radial direction. Conventionally, it was almost impossible to expect the proof strength of a general wooden column (head) with a pillar and head penetration, but as mentioned above, due to the tightening force caused by the engagement between the engaging portions 6, this wooden frame does not have any hardware. Without using it, the proof strength is enhanced compared to the conventional wooden frame, and the seismic performance can be greatly improved.

  Moreover, the long press 3 provided just under the head penetration 2 is attached with respect to the column head with the wooden frame of the structure shown in FIG. That is, a groove 7 is formed at the bottom of the pillar at the bottom of the groove 5 over the entire circumference of the pillar, the bottom of which forms an octagon, and both long presses 3 sandwiching the pillar 1 are semicircular notches. And an engaging portion 8 that engages with the groove 7 is formed in the cutout portion. By fitting the engaging portion 8 into the groove 7, both long presses 3 are formed on the column head. On the other hand, the pillar 1 is sandwiched in a state where relative rotation is impossible. Then, the two long presses 3 are attracted to each other by being fastened to the vehicle by the pulling rod 9 and the vehicle stopper 10 so that the column heads are tightened by the long push 3 in addition to the tightening by the head penetration 2 described above. It is also tightened by, and further strengthening of the proof stress is realized.

  Further, the pillar 1 is built on the foundation stone 11 with the structure shown in FIG. That is, a hemispherical convex portion (round dowel) 12 is formed on the top surface of the cornerstone 11, and a hemispherical concave portion 13 that fits the convex portion 12 is provided on the bottom surface of the pillar 1. The pillar 1 is built in a state in which the convex portion 12 and the concave portion 13 are fitted. And although the ground cover 4 is connected to the column base part by a normal wooden frame, the column 1 is not directly connected to the foundation stone 11, so that this frame group receives a horizontal force. In this case, as shown in FIG. 3C, the column 1 is allowed to be slightly inclined and lifted so as to ride on the convex portion 12. By building the column 1 with such a structure, damage to the column base part during an earthquake is prevented, and the restoring force against the inclination of the column 1 is fully exhibited in the entire wooden frame, and the earthquake resistance performance is greatly improved. It is possible to do.

  5 to 10 show an embodiment of the present invention. In the present embodiment, the long press 3 is omitted from the wooden shaft assembly of the reference example shown in FIG. 1, the plate wall 14 is incorporated, and the dough assembly 15 is provided. The details of the part, the part IX, and the part X are shown in FIGS. 6, 7, 8, 9, and 10, respectively. The configurations of II and IV are the same as in the reference example.

  In the wooden frame of this embodiment, the inner leg 16 and the foot anchor 17 are passed to the upper and lower parts between the pillars 1, respectively, and a plurality (three in the illustrated example) of the penetrating holes 18 are provided between them. The plate wall 14 is formed by passing between the head penetration 2, the inner penetration 16, each penetration 18, the foot fixation 17, and the ground cover 4 with a plurality of force plates 19 (six in the illustrated example). Yes. Although the inner frame 16 and the foot anchor 17 and the column 1 are of a normal structure as shown in FIGS. 6 and 7, for example, each of the through holes 18 and each of the force plates 19 has the structure shown in FIG. It is attached to the pillar 1. That is, the end portion of the through hole 18 is fastened to the column 1 by a sickle, and the end portion of the force plate 19 is inserted into the longitudinal groove 20 formed in the column 1 so as to be vertically displaceable. The through holes 18 and the force plates 19 are connected to each other so as to be relatively displaceable in the length direction, and wooden dowels 21 are interposed between them at a predetermined interval (for example, about 300 mm). ing. In a wooden frame having a plate wall 14 having such a structure, when a horizontal force is applied during an earthquake, each force plate 19 tends to shift vertically with respect to the pillar 1 and the force plate 19 and the through hole 18 are Although it tends to shift in the horizontal direction, such a shift is constrained by the dowels 21, so that excellent horizontal strength is exhibited, and moreover, due to minute deformation of the dowels 21 and frictional forces between the columns 1, throughs 18, and force plates 19. A vibration damping effect can also be expected. That is, the plate wall 14 behaves like a damper built-in type earthquake resistant wall in a modern building, and the use of such a plate wall 14 can greatly improve the earthquake resistance performance of the wooden frame.

  Further, as shown in FIGS. 9 and 10, the dough set 15 in the present embodiment is provided with a set 26 including a canister 23, an elbow 24, and a winding funnel 25 connected to each other by a dowel 22. They are connected to each other by an elbow tree 27, a dome 28 is placed between the through elbow tree 27 and the headpiece, and a gutter plate 29 as a small wall is attached to the range surrounded by the braid 26, the headpiece 2 and the through elbow tree 27. It has been configured. As usual, the upper plate 29 is fitted into a groove 30 formed on the lower surface of the elbow 27, and the lower edge of the lower plate 29 is fitted into a groove 31 formed on the upper surface of the head penetration 2. However, in this embodiment, the step-shaped engagement portions for restricting the horizontal displacement of the flange plate 29 in both the upper and lower edge portions of the flange plate 29 and the grooves 30 and 31 into which they are fitted. 32 is provided. With such a structure, when the shaft is about to be deformed by a horizontal force at the time of an earthquake, the anchor plate 29 restrains it, and thereby a conventional general shaft that does not expect such a function from the anchor plate. Seismic performance can be improved compared to the pair.

The embodiment of the present invention has been described above. However, the wooden frame of the present invention is not limited to the above embodiment , and the built-in structure of the pillar 1 shown in FIG. 4 and FIGS. Based on the mounting structure of the cover plate 29 shown, each component in the above-described embodiment and reference example, that is, the wooden frame of the pillar 1 and the head screw 2 shown in FIG. 2, the long press 3 shown in FIG. A wooden frame provided with either a wooden frame or the plate wall 14 shown in FIG. 8 alone or in any combination may be used, and in any case, compared to a conventional general wooden frame without using any hardware. Excellent seismic performance.

  It should be noted that the present invention is not only applied to the construction of new wooden buildings such as shrines and temples, but is also preferably applied to the repair and seismic reinforcement of existing wooden buildings with historical value. . In that case as well, there is no sense of incongruity because the appearance is not different from that of traditional wooden buildings.

It is an elevational view showing a wooden frame as a reference example related to the present invention. FIG. 2 is a detailed view of a part II in FIG. 1. FIG. 3 is a detailed view of part III in FIG. 1. FIG. 4 is a detailed view of a part IV in FIG. 1. It is an elevation view which shows the wooden framework of one Embodiment of this invention. FIG. 6 is a detailed view of a VI part in FIG. 5. It is detail drawing of the VII part in FIG. It is detail drawing of the VIII section in FIG. FIG. 6 is a detailed view of a part IX in FIG. 5. FIG. 6 is a detailed view of a portion X in FIG. 5.

Explanation of symbols

1 pillar 2
11 cornerstone
12 Convex
13 Concave portion 15 Doe group 26 Assembly 27 Through elbow 29 Gutter plate 32 Engagement part

Claims (1)

In a wooden frame constructed by building a pillar on the foundation stone, connecting the ground cover to the column base, providing a braid on the head of the pillar, and attaching a mortar board to the range surrounded by the bracelet and the elbow tree ,
A step-like engaging portion that engages with each other and regulates horizontal displacement of the plate is provided on both the upper edge of the plate and the through-elbow, and both the lower edge and the head of the plate , and ,
A hemispherical convex part is formed on the top surface of the cornerstone, and a hemispherical concave part fitted to the convex part is provided on the bottom surface of the pillar, and the inclination of the pillar due to horizontal force is achieved by fitting the convex part and the concave part. And a wooden frame characterized by allowing to lift.

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