JPH0728249Y2 - Joint structure of laminated timber beams in wooden structure - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a joint structure for a laminated lumber beam in a wooden structure in which the deformation of the laminated lumber beam joint is reduced.

[Problems to be solved by the device]

As shown in Fig. 6-I, the joint part of the beam of the laminated wood structure is conventionally pin-joined by embedding a joint plate between both beams and straddling it with bolts or the like. When a vertical load is applied, bolts etc. dig into the beam, II
There is a risk of being deformed as shown in and becoming unstable.

The present invention was made by paying attention to such a difficulty of the laminated beam beam joint portion, and intends to solve the problem by making the joint portion rigid.

[Means for Solving the Problems]

In the present invention, an H-shaped metal fitting is inserted into each of the slits provided vertically and horizontally at the ends of the laminated lumber beams that are connected to each other, and both metal fittings are bolted to each other at a plurality of points to make it rigid. At the same time, the filler is densely filled in the voids in the slits to restrain looseness and rotation of the metal joint and reduce deformation of the joint.

The joint metal has a height smaller than that of the beam and a width smaller than the width of the beam. One side of the joint metal protrudes from the end face of the beam and is inserted into the slit.

An embedding material having a height equivalent to the burning margin or a width for making the laminated timber beam into a fireproof structure is inserted into the slit around the joining metal article to protect the joining metal article.

〔Example〕

 The present invention will be described below with reference to the drawings showing an embodiment.

In this invention, as shown in FIG. 1, a laminated timber beam 1 (hereinafter referred to as beam 1), 1 is joined via an H-shaped joining metal 2, 2, and a void 3 is filled with a filler 3. .

As shown in FIG. 2, a slit 1a is formed vertically and horizontally at the end of the beam 1 so as to have a square cross section.
The metal fitting 2 having a height smaller than that of the beam and a width smaller than the width of the beam is inserted into. At this time, one side of the metal joint 2 projects from the end face of the beam 1.

First, the first embodiment will be described.

In this embodiment, the joint metal 2 is used as a locking pin 4 such as a bolt or a pin.
Is attached to the beam 1.

The beam and the flange of the joint metal 2 are at the required positions on the beam 1
A plurality of holes 2a for attaching to the shaft and a plurality of bolt holes 2b for connecting to each other by bolts are opened. On the side surface of the beam 1, an insertion hole penetrating in the out-of-plane direction and the vertical direction at the same position as the hole 2a. 1b is drilled.

The metal fittings 2, 2 inserted in the slit 1a are attached to the beams 1, 1 by a locking pin 4 penetrating the insertion hole 1b and the hole 2a as shown in FIGS. Plates that are abutted against and span the web and flange 5,
Via bolts 5, bolts 2 are bolted to each other in high-strength bolts 6 and the like.

The length of the locking pin 4 is shorter than the width of the beam 1 or smaller than that of the beam 1, and is covered with the joining metal piece 2 by fireproof coating with wood or an embedding material 7 such as fireproofing material as shown in FIG.

The embedding material 7 has a height or a length equivalent to a burning margin for making the beam 1 a fireproof structure, that is, for making the joint metal 2 and the locking pin 4 fireproof, and around the joint metal 2. That is, the slits 1a on the top and bottom of the flange and on both sides of it
It is inserted into the insertion hole 1b on both the inner side and the locking pin 4 outer side.

As shown in FIG. 3 -II, a filler 3 such as an adhesive or a fixative is injected into the space around the metal fitting 2 with the fireproof coating and the locking pin 4 and the beam is closely packed and Integrated with 1.

Further, the periphery of the protruding portion of the joint metal 2 from the end surface of the beam 1 is closed with a sealing material 8 to prevent the filler 3 from leaking.

Next, a second embodiment will be described.

This embodiment slits the metal fitting 2 as shown in FIG.
It is attached to the beam 1 by simply inserting it into the 1a.

As in the first embodiment, a plurality of bolt holes 2b are formed in the end portion of the joint metal 2 on the side of the joint portion, and as shown in FIG. Are joined together by high-strength bolts 6 and the like.

Further, the void 3 of the slit 1a is filled with the filler 3, and the embedding material 7 is inserted on the upper and lower sides and both sides of the web of the joint metal 2.

[Effect of device]

The present invention is as described above. The beam is rigidly joined through the metal joint, and the metal joint is restrained by the beam by the filler, so that the metal joint rattles, dents, and deforms the joint. Is effectively prevented, and the metal such as the joint metal is protected by the embedding material for fire resistance, so the safety against fire is improved.

[Brief description of drawings]

1-I and II are a plan view and a front view, respectively, showing an embodiment of the present invention, FIG. 2 is a perspective view showing a state in which a metal fitting is inserted, and FIGS. 3-I and II are locking pins, respectively. FIG. 4 is a perspective view showing a state of inserting an embedding material and injecting a filler, FIG. 4 is a perspective view showing another embodiment, and FIGS. 5A and 5B are plan views, front views, and FIG. I and II are front views showing a conventional structure. 1 ... Glued lumber beam, 1a ... Slit, 1b ... Insertion hole, 2 ...
… Molding metal, 2a …… hole, 2b …… bolt hole, 3 …… filler, 4 …… locking pin, 5 …… plate, 6 …… high-strength bolt, 7 …… embedding material, 8 …… Seal material.

Claims (1)

[Scope of utility model registration request] 1. An H-shaped joint having a height smaller than the beam width and a width smaller than the beam width is formed in a slit having a square cross-section provided vertically and horizontally at the ends of the laminated lumber beams connected to each other. Insert one side of the laminated lumber beam with one side protruding, and join the joints protruding from the end faces of both laminated lumber beams to each other at multiple points with bolts, and insert the embedding material inside the slit around the jointed metal Joint structure of laminated lumber beams in a wooden structure in which the voids are densely filled with a filler.