JP3016306U - Reinforcing metal fittings for horizontal joints by precut method - Google Patents

Abstract

(57) [Summary] [Purpose] The purpose of this is to measure the safety of a building by supplementing the reduction in beam joint strength due to the precut construction method for wooden structures. [Structure] This reinforcing metal is a deformed I-shaped steel, and has a blade 3a of a flange to be inserted in a saw-tooth provided at the lower end of the beam, a groove 3-b for closely adhering the web to the lower end of the beam, and a lateral bending.・ Wide width web for increasing the allowable yield strength of shear 3-
It is characterized by having c, member mounting holes 4 and 6, and a water dripping hole 7 provided with a groove 3-roni.

Description

[Detailed description of the device]

[Field of Industrial Application] [0001] This invention complements the decrease in the strength of a beam joint due to the precut method of a wooden building and measures the safety of the building.

[Prior Art] In the conventional precut method, the joint of the beam is attracted and fixed by the battledore vault, but no reinforcing metal is used for the joint of the beam.

[Problems to be Solved by the Invention] This has the following drawbacks. In the beam joint of the precut method, only the cylindrical part of the sickle holder with a diameter of about 3.5 cm is joined to the upper part, and most of the lower part is butt joint. A stool with a depth of 1 cm is provided in the middle of the spine of the female tree member, and the male tree is placed on it. Therefore, there are the following drawbacks. (1) At present, the length of the members is almost unified to 4 meters because of the convenience of the work of this method. Between the beams, if it is longer than that, one end is mounted on the pillar, but the other end is a beam joint. Only 1 cm in depth will be placed on the seated part of the car, which is unsafe for vertical loads. (2) In a building with a frontage of about 7 to 8 meters, the joints will be spliced at almost the same position for each beam, and from a plan view, the joints will be vertically aligned in the central portion and will be folded at the center. It is difficult to transfer horizontal force to the brace on both side wall surfaces. (C) There is no “vertical dowel” in the joint part, which is the case with the conventional hand method, and the sickle part and the take-out part are all cylindrical, and the lower side of one member is on the right side of the other. In many cases, the lower side of the part of the part warps to the opposite side, which may deform the wall surface of the outer wall frame and cause rain leakage, and even in the case of internal beams, the finished surface of the ceiling will dance. Is causing the The present invention has been made to eliminate these drawbacks.

[Means for Solving the Problem] At the lower end of the joint portion of the beam, a sawtooth in the member direction is formed on both sides from the male tree 1 to the female tree 2, and the groove of the flange of the reinforcing metal fitting is inserted into the groove. Insert the blade 3-a. Next, in order to ensure that the web 3-C can be firmly attached to the underside of the beam, the flange is made large and hung down, then bent inward and returned to the lower end of the beam to form groove 3-B. After making a wide web 3-HA under the beam, follow the reverse procedure to make a laterally deformed type I steel 3 and make several holes 4 for each male and female tree in the web 3-HA. It is provided and a structural nail or a cross nail 5 is struck here and attached to the lower end of the beam. The present invention is a reinforcing metal member having the above-mentioned configuration.

[Operation] The blade 3-a of the flange of the deformed I-shaped steel 3 is inserted into the saw-tooth provided on the lower end of the beam sickle joint. A modified I-type steel web 3-C is provided with several holes 4 for each of the male and female trees, and structural nails or cross nails 5 are struck and attached thereto to reinforce the beam joints from below.

An example of the present invention will be described below. (B) Saw the beam on the lower end of the sickle joint from the male tree 1 to the female tree 2 in a straight line in the member direction. The blade 3a of the flange of the deformed I-shaped steel 3 is sufficiently inserted into this saw-tooth. A laterally deformed I-shaped steel 3 having a groove 3-B in the flange portion is provided with a nailing hole 4 in a web 3-C, and structural nails or barbed nails 5 are attached to reinforce the beam joint from below. (B) The modified I-type steel web 3-C is taken out to the outside of the beam by the same width as the contact surface with the wood, and a spare nail driving hole 6 is formed in the same position as the structural nail 5. Put. This is because when the blade 3-a of one flange is damaged, it is folded back and used. (C) In order to deal with rust due to construction in rain and subsequent curing of rainwater, damage to dew condensation, etc. for the groove 3-B provided on the deformed I-shaped steel and the groove provided at a position symmetrical to this The water drop hole 7 is provided if necessary.

[Advantage of the Invention] The blade of the flange of the I-shaped steel inserted in the saw blade provided at the lower end of the sickle joint of the beam can prevent the lower end of the member from being twisted. . Also, by attaching steel material to the lower end of the beam, the rigidity of the beam is strengthened, the possession load of all of vertical compression, tension, bending, and shear is increased, and the beam is prevented from coming off from the seated portion. I can. With respect to the lateral sway of the beam, increasing the web width of the deformed type I steel increases the allowable bending and shearing resistance, and it is possible to prevent the building from flat bending. .

[Brief description of drawings]

FIG. 1 is a perspective view of the present invention.

FIG. 2 is a cross-sectional view showing a usage state of the present invention.

FIG. 3 is an explanatory view showing a usage state of the present invention, as seen from below.

[Explanation of Codes] 1 Male tree 2 Female tree 3 Deformed I type steel 3-A Flange blade of deformed I type steel 3-B Deformation I type steel groove 3-C Deformed I type steel web 4 Nail hole 5 Structural nail or Reverse eye nail 6 Spare nailing hole 7 Water drop hole

Claims (1)

[Scope of utility model registration request] 1. Reinforcing metal fittings to be attached by inserting saw blades on the lower ends of male tree 1 and female tree 2 of a sickle joint of a precut construction method and inserting blades 3-a of the flanges.