JP2003119907A - Fastening device to base concrete for column - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a fastening device to base concrete for a column, which has a simple structure, directly clamps the column to base concrete and has an excellent joint strength. SOLUTION: A leg material A disposed in upright to a bedrock 1, mutually opposing a pair of leg-section members 3 and 3 is fastened to base concrete C by an anchor bolt 4 and a nut 6 screwed to the anchor bolt 4 in the bedrock 1. An assembling material B with a connecting section 8 projected from the underside of an assembling substrate 7 is assembled to the column (p) by a fixing means. The assembling substrate 7 superposed onto the lower end face of the column (p) of the assembling material B is placed on the leg-section pieces 3 and 3, and the leg-section pieces 3 and the connecting section 8 interposed between the leg-section pieces 3 and 3 are fixed mutually by a screw lever 9.

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for binding columns of a wooden building to foundation concrete. [0002] In order to bind columns to foundation concrete,
Anchor bolts and nuts screwed into them are used to fix the base to the foundation concrete, and to the mortise provided on the base,
Generally, a tenon provided on a pillar is fitted to join the pillar to a base. [0003] The conventional fastening means using so-called tenon joint means uses a so-called chevron plate or the like to compensate for insufficient strength of tenon joint. It is not always satisfactory in strength because of the indirect bond to the foundation concrete. The present invention has been made in view of such a normal situation, and has been devised in order to provide a device which has a simple structure, and which directly ties columns to foundation concrete, and which can withstand the required strength. [0005] A leg member having a pair of leg pieces standing upright on a base is fastened to the base concrete by an anchor bolt and a nut screwed to the base member on the base, and assembled. An assembling material having a connecting portion projecting from the lower surface of the mounting board is mounted to a pillar by fastening means, and the mounting board superimposed on the lower end face of the pillar of the mounting material is mounted on the leg piece. And the connecting portions interposed between the leg pieces and the leg pieces are fixed to each other with a screw rod. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 shows an embodiment of a device for binding a column to a foundation concrete according to the present invention. FIG. 1 is a longitudinal sectional view and FIG.
FIG. 3 is a partially cutaway plan view of FIG. 1 with the column side omitted, FIG. 3 is an exploded perspective view of hardware, FIG. 4 is a longitudinal sectional view of the second embodiment, and FIG.
FIG. 6 is an exploded perspective view of hardware used in the second embodiment. [0007] The binding device of the embodiment is a foundation concrete c
The leg members A are fixed to each other and the mounting members Ba and Bb attached to the column p are fastened to each other. The leg members A are a pair of leg portions on a square base 1 having a window hole 2 in the center. The pieces 3 and 3 are erected and placed on the foundation concrete c so that the tip 4a of the anchor bolt 4 projecting from the foundation concrete c is inserted into the window hole 2. A nut 6 is screwed into a tip 4a of the anchor bolt 4 that projects further through a washer 5 via a washer 5, and is fixed to the foundation concrete c. On the leg pieces 3, 3 of the leg material A, the column p
The mounting substrate 7 of the mounting members Ba and Bb fixed by the fixing means is placed on the mounting substrate 7, and the connecting portion 8 projecting from the lower surface of the mounting substrate 7 and the leg pieces 3, 3 are connected to the screw rod 9. And the column p is fastened to the foundation concrete c to form an apparatus of the embodiment. The mounting members Ba and Bb are provided with a fitting rod 10 protruding from the upper surface of the mounting board 7, and the fitting rod 10 is
The lower end surface of the pillar p is inserted into an assembling hole 11 provided by opening, and the mounting board 7 is overlapped with the lower end surface of the pillar p, and the fitting rod 10 is inserted.
The drift pin 14 is driven into a through-hole 13 provided in the middle of the through-hole 12 and the column p so as to coincide with the through-hole 12, fitted and fitted to the column p, and fixed. It is. The leg material A and the assembling materials Ba and Bb are made of steel, and the substrate 1 of the leg material A and the assembling substrate 7 of the assembling materials Ba and Bb have a square shape identical to the lower end surface of the column p. There is. The reason why the diameter of the window hole 2 is larger than the diameter of the anchor bolt 4 is that the foundation concrete c of the anchor bolt 4 is used.
This is in order to absorb construction errors for. Reference numeral 15 denotes a foundation packing (spacer) interposed between the base m and the foundation concrete c. The presence of the foundation packing 15 causes the space below the floor between the foundation m and the foundation concrete c. An air port communicating with the outside is formed. In the illustrated example, the basic packing 15 is also provided immediately below the column p, but these packings may be omitted. The connecting portion 8 of the mounting member Ba of the first embodiment is
A nut member 8 ″ is fixedly mounted on a support frame 8 ′, and a screw hole 1 provided in a bore 8 ″ a and a leg piece 3 of the nut member 8 ″
6, the screw 9 is screwed from one screw hole side, the screw 9 is passed between the leg pieces 3 and 3, and the leg material A on the foundation concrete c side and the assembly material Ba on the column p side are Fixed to each other, pillar p
Is fixed to the foundation concrete c. The connecting portion 8 of the mounting member Bb of the second embodiment is
Side piece 8 provided with the center of the frame fixed to assembly board 7
a, 8a and a center piece 8b constituted by the lower end of the fitting rod 9 interposed between the side pieces 8a, 8a through the center part and the mounting board 7. The side pieces 8a, 8a The threaded rod 9 is passed through the through hole 8a 'provided in the center piece 8b' and the screw hole 8b 'provided in the center piece 8b (to be screwed into the screw hole 8b') and passed between the leg pieces 3, 3. The leg material A on the foundation concrete c side and the mounting material Ba on the column p side are fixed to each other, and the column p is fixed to the foundation concrete c. In the first embodiment, the nut member 8 "is arranged at a position close to the leg piece 3, and in the second embodiment, the side piece 8a is arranged at a position close to the leg piece 3. As described above, the connecting portion 8 of each embodiment can be prevented from displacing the mounting material B, that is, the column p, from the leg material A by arranging the leg pieces 3 and 3 so as to have a full separation width. In the case of the example, in the first embodiment, the screw 9 is screwed into the nut member 8 ″ and the leg piece 3. The above-described displacement is basically prevented by the screwing relationship between the piece 8b and the leg piece 3. The screw rod 9 is constituted by a single bolt body in the embodiment, but is constituted by a pair of bolt bodies which are attached to the connecting portion 8 from the side of the leg pieces 3 and 3. May be
The central portions of the leg pieces 3 and 3 through which the screw 9 passes are recessed 18 in the direction approaching each other, for the purpose of reinforcing the function as a receiving portion of the head of the screw 9 and load resistance. It is. The fastening means of the embodiment is composed of the fitting rod 10 and the drift pin 14 which engages with the fitting rod 10. However, if the fastening means of the embodiment is applied, there is no useless projection, so that It is suitable for the construction of walls and floors to be performed later. Since the present invention has the above-described configuration,
It is possible to provide a device having a simple structure and superior in strength as compared with the case where the pillar is directly fixed to the foundation concrete and the base is interposed and tied.

[Brief description of the drawings] FIG. 1 is a longitudinal sectional view. FIG. 2 is a partially cutaway plan view of FIG. 1 with the column side omitted. FIG. 3 is an exploded perspective view of hardware. FIG. 4 is a longitudinal sectional view of the second embodiment. FIG. 5 is an exploded perspective view of hardware used in the second embodiment. [Explanation of symbols] A leg material B Assembly material c Foundation concrete p pillar 1 Foundation 3 leg pieces 4 Anchor bolt 6 nuts 7 Assembly board 8 Fastening part 9 Screw rod

Claims (1)

Claims 1. A leg member having a pair of leg pieces standing upright on a base is fastened to the base concrete by anchor bolts and nuts screwed to the base member on the base, and assembled. An assembling material having a connecting portion projecting from the lower surface of the substrate is attached to a pillar by fastening means, and the assembled substrate superposed on the lower end surface of the pillar of the assembling material is placed on the leg piece. And a connecting device interposed between the leg pieces and the leg pieces fastened to each other by a screw rod.