JPH01116129A - Joining device for post and foundation - Google Patents

Abstract

PURPOSE: To permit rigid joining and to prevent cracking of portions through which anchor bolts are passed by causing the anchor bolts buried and installed in the four corners of the predetermined column erection part of a foundation to be passed through and fastened to a wood column, for connecting the foundation to the wood column. CONSTITUTION: Anchor bolts 3 buried and installed in the four corners of the predetermined column erection part of a foundation 1 are inserted into through holes 6 bored longitudinally in the four corners of the lower end of a wood column 23 and are further passed through slots in the bottom panels of angle plates 10 mounted in cutouts 7 formed at the four corners of the middle part of the wood column 2, the anchor bolts 3 being tightened with nuts 12. A steel rod 14 is passed through a through hole 13 bored between the cutouts 7, 7 parallel to the side wall of the wood column 2, to connect the side panels of the plates 10 together. Preferably, a rectangular base plate 4 is provided on the lower end face of the wood column 2 and the foundation 1 is made to abut the wood column 2 to enhance workability and drainability.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application 5!?) The present invention relates to a column-to-foundation joining device that is capable of rigidly joining a column to a foundation.

(Prior Art) Conventionally, it has been known that columns and foundations in wooden buildings are connected either through a foundation provided on the foundation via anchor bolts or directly.

In the case where the connection is performed via the base, both members are connected by a connecting hardware such as a box hardware, a strip of metal, or a glazing.

In addition, when the pillar and the foundation are directly connected, the lower end of the pillar is fitted into a recess formed in the foundation (usually called doweling), or a box hardware is installed buried in the foundation. One end of a strip of metal or a battledore bolt is connected to the lower end of the column.

(Problems to be Solved by the Invention) All of the conventional joint structures as described above are pin joints, and cannot be used as rigid joints. Therefore, in buildings using wooden pillars, there was a problem that the framework could not be made of rigid frame construction.

(Means for Solving the Problems) Therefore, the present invention buries anchor poles in the four corners of the part where the pillars of the foundation are planned to be erected, and connects the foundation and the wooden pillars via the anchor bolts. This is to prevent the insertion and retraction portion of the anchor bolt from splitting, and to solve the problem of illumination during the process.

That is, in the column and foundation joining device of the present invention, the anchor bolts, which are buried in the four corners of the planned column erection area of the &'jt' foundation, are inserted through the four corners of the lower end of the wooden column, which are drilled along the longitudinal direction. In addition to being inserted into the hole, an angle plate consisting of a square bottom plate and two side plates is attached to a notch formed at the four corners of the middle part of the wooden pillar, and the bottom plate of the angle plate is fastened to the anchor bolt. It is characterized in that the side plates at adjacent corners are connected to each other via a bar (m) that penetrates into the wooden column.

In the above, the wooden pillar and the foundation may be in direct contact with each other, but if the wooden pillar is brought into contact with a rectangular base plate 1 interposed at the lower end, it will improve workability during construction and improve the joint area. It is suitable in terms of drainage properties, etc.

(Function) According to the column and foundation joining device of this invention, anchor bolts buried in the foundation can be inserted and fastened into wooden columns! Since it is R-type, it is possible to rigidly connect the foundation and columns.

(Example) Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 shows a column-to-foundation joining device according to an embodiment, where 1 is a concrete foundation and 2 is a wooden column.

The part of the foundation 1 where the pillars are to be erected has a rectangular surface that is slightly larger in cross section than the wooden pillar 2, and anchor bolts 3 made of high-tensile steel rods are buried and fixed in the four corners of the base part. To this anchor bolt 3.3, a through hole 5 of a rectangular base plate 4 having the same cross section as the wooden pillar 2 shown in the second country is fitted and inserted, and also protrudes from the upper side of the rectangular base plate 4. The anchor bolts 3.3 are inserted into the insertion holes 6 previously drilled in the four corners of the lower end of the wooden pillar 2 along the elongated direction.

Notches 7 are formed at the four corners of the middle part of the wooden pillar 2.
The upper end of the anchor bolt 3.3 projects into this cutout 7. As shown in FIG. 3, the notch 7 has a
An angle plate 10 is attached 17 in which the square bottom plate 8 and two side plates 9 and 9 are fixed at right angles to each other.
Insert it into the hole and tighten with nut 12.

On the other hand, between the notches 7 and 7, through holes 13 and 13 are bored in the wooden pillar 2 in parallel with the side wall, and each through hole 13 has a shape as shown in FIG. A steel rod 14 is inserted,
A high-strength bolt 17 inserted through a through hole 16 in the side plate 9 of the angle plate 10 is screwed and tightened into a screw hole 15 provided on the end face of the steel rod 14.

In the embodiment described above, the processing of the notch 7, the insertion hole 6, and the through hole 13 in the wooden column 2, the attachment of the angle plate 10, and the insertion and tightening of the steel rod 14 can be performed in advance at a factory or the like. Therefore, when constructing the wooden pillar 2 (in the J4 industry, attach the base plates 1 and 4 to the anchor bolts 3.3 buried in the l & foundation 1, and insert the insertion holes 6.6 of the wooden pillar 2). The work can be completed simply by fitting and tightening the nut 12.

In the joining device configured as described above, the vertical 'R load on the wooden column 2 and the vertical compressive force when a rotational moment is generated around the joint point are transmitted to the foundation 1 via the base plate 4. On the other hand, the vertical tensile force on the wooden column 2 and the vertical tensile component force when a rotational moment is generated with the joint point as the 11 center are from the wooden column 2 to the bottom plate 8 of the angle plate 10 and the steel rod 14. It is transmitted to the anchor bolt 3 via , and further transmitted to the base 1al. At this time, since the vertical projected area of the bottom plate 8 of the angle plate 10 and the steel rod 14 is large, the influence of sinking into the wooden column 2 can be reduced, and as a result, the rotational moment can be resisted with high rotational rigidity. Therefore, a wJ junction can be obtained. Further, the horizontal shearing force on the wooden post 2 is transmitted to the side surface of the anchor bolt 3, and further transmitted from the anchor bolt 3 to the foundation 1. At that time, there is a risk that the anchor bolt 3 may break the column surface in the forward direction and not pop out.
On the other hand, since the base plays 1 and 4 and the steel rod 14 are used to hold the anchor bolts on the opposite side parallel to each other and at equal intervals, the anchor bolts on the opposite side resist against the column inside. , this can be prevented.

The base plate 4 can regulate the position of the anchor bolt 3.3 to match the insertion hole 6 of the wooden pillar 2 during erection work of the wooden pillar 2, so the erection work can be carried out efficiently. Can be done. It also has the effect of improving drainage at the contact area between the wooden pillar 2 and the foundation, and corrosion of the wooden pillar 2 can be avoided.

(Effects of the Invention) As explained above, the present invention has the effect of providing a joining device that can rigidly join wooden columns to a base. As a result, the ramen spear remains can be realized even in wooden buildings.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of an embodiment of the invention, FIG. 2 is a perspective view of the same embodiment of the base play 1, and FIG. 3 is a perspective view of the same embodiment.
4 is a perspective view of the steel rod of the same example. 1...Foundation 2...Wooden pillar 3...Anchor bolt 4...Square base plate 6...Through hole 7...Notch 10...Angle plate 14...Steel bar

Claims (1)

[Scope of Claims] 1. Anchor bolts buried in the four corners of the planned foundation column are inserted into insertion holes drilled in the four corners of the lower end of the wooden column along the longitudinal direction. An angle plate consisting of a rectangular bottom plate and two side plates is attached to the notch formed in the four corners of the middle part of the wooden column, and the bottom plate of the angle plate is attached to the anchor bolt, and the side plates at adjacent corners are attached to each other inside the wooden column. Column and foundation joining device 2, characterized in that they are connected via a steel rod installed through the base.Patent claim: The foundation and the wooden column are in contact with each other via a rectangular base plate provided at the lower end of the wooden column. Column and foundation joining device described in item 1 of the scope of