JPH01310032A - Beam joining structure for column beam joining part - Google Patents

Abstract

PURPOSE:To simply and surely mount and fix a beam end plate to a beam joining close cross-section member with correct tension management by using the high strength bolt composed of a headless screw bolt, nut previously tension managed, and washer. CONSTITUTION:Between colums 5 and 6 vertically arranged in the up and down direction, the beam joining close cross-section member 8, in which plural gap screws 10 are drilledly provided on a wall surface 9, is interposed, and integratedly welded each other. And a beam end plate 7 is abutted to the given wall face 9 of the member 8, and a screw bolt 11 is threadedly engaged with the screw 10 using a wrench while the bolt 11 is abutted to the bolt hole of the plate 7 and the screw 10 of the surface 9. Moreover a washer 14 and a nut 13 are attached on the circumference of the bolt 11, and the washer 14 and the nut 13 are clamped to the bolt 11 by rotating the nut 13.

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a beam joint structure for a column-beam joint in which a beam end plate is attached to a beam joint closed cross-section member.

<Prior art> Generally, the member with the tapped screw and the bolt are manufactured by different manufacturers and come in a wide variety of types, so it is difficult to manage the tension between them. Even when the screw bolts that have been fitted exhibit a certain torque, it is unclear how much tension is introduced, which is both unsettling and inconvenient. In addition, in order to improve the above-mentioned drawbacks, as shown in FIGS. 1 and 2, when screwing the screw bolt 3 into the member 2 in which the tap screw 1 is bored, a curved load control washer 4 is used to change its shape. A method has been implemented in which the tension is controlled, or when a certain torque is applied to the threaded bolt 3, the locking portion breaks, thereby controlling the introduced tension.

Also, regarding the headless screw bolt itself, it was published in 1983.
65418, etc., and there is also a method or structure in which a tool engaging portion is provided at the tip of the bolt shaft to prevent the bolt and nut from rotating together when the bolt and nut are screwed together and to manage the axial force with only one side operation, for example. As shown in Publication No. 47-15859 etc. (it was publicly known).

<Problems to be Solved by the Invention> However, the above-mentioned conventional technology is a technology for mutually fastening a plurality of plate-like members whose circumferences are completely open, and a closed cross-section member whose inside is completely closed is connected to other parts. Special techniques for attaching parts had not been developed at all.

In particular, problems with techniques for joining beam end plates to beam joint closed cross-section members, in which tension control is difficult and extremely important, have not been improved at all.

The present invention relates to a completely new technique developed in view of these conventional problems.

Means for Solving the Problems> The present invention provides a column-beam joint structure in which a beam end plate is attached and fixed to a beam joint closing cross-section member in which tapped screws are pre-drilled. A column-beam joint characterized in that the beam end plate is attached and fixed to a beam joint closing cross-section member using a high-strength bolt made of a combination of a nut and a washer whose tension is controlled in advance so as to fit together. It is a beam joint structure of the section.

<Operation> As described above, the beam joint structure according to the present invention uses a high-strength bolt made of a combination of a headless threaded bolt, a tension-controlled nut, and a washer on a beam joint closing cross-section member in which tapped screws are pre-drilled. Since the structure is such that the beam end plate is attached to the beam end plate, appropriate tension management is possible, and thereby the beam end plate can be easily and reliably attached and fixed to the beam joint closed section member on the column side.

<Example> An example of the beam joint structure according to the present invention will be explained in detail with reference to the drawings. In FIGS. 3 and 4, 5 and 6 are columns arranged vertically in the vertical direction, respectively. A beam joint closed section member 8 for attaching and fixing the beam end plate 7 having bolt holes is interposed between the two and integrally welded to each other. The beam joint closed cross-section member 8 is constituted by a closed block body such as a cube, a rectangular tube, or a cylinder, and a plurality of tap screws 10 are bored in the wall surface 9 thereof.

Next, reference numeral 11 denotes a threaded bolt used in the beam joint structure of the present invention.
0, and a rotation stop head 12 having a smaller diameter than the screw portion is protruded from the head of the screw. Next 1
Numeral 3 is a nut manufactured in advance at the same factory with mutual tension control so as to fit this threaded bolt 11, and 14 is a washer for the bolt.

In assembling the beam joint structure according to the present invention, as shown in FIG. Using a wrench (not shown) while touching the tap screw lO of the wall surface 9, tighten the screw bolt 11 into the tap screw 10.
Further, a washer 14 and a nut 13 are attached around this threaded bolt 11, and the nut 13 is rotated and tightened to the threaded bolt 11. While managing the tension, the beam end plate 7 is connected to the beam joint closed section member. 8 can be installed and fixed in a stable state.

<Effects of the Invention> As described above, in the beam joint structure according to the present invention, the beam end plate is attached to the beam joint closed cross-section member provided on the column side, and the headless screw bolt as described above is screwed into the screw bolt. The beam end plate is attached and fixed to the beam joint closing cross-section member using high-strength bolts made of a combination of nuts and washers whose tension is controlled in advance so that they fit together, so the tension can be controlled accurately. The beam end plate can be easily and securely attached to the beam joint closed section member by tightening screw bolts, and it has the characteristics that it is especially effective for joints where tension management is extremely important, such as column-beam joints. There is.

[Brief explanation of the drawing]

FIGS. 1 and 2 are explanatory views showing a conventional example, respectively, and FIGS. 3 and 4 are explanatory views showing an embodiment of the present invention, respectively. 5.6 is a column, 7 is a beam end plate, 8 is a beam joint closed section member, 9
10 is a wall surface, 10 is a tap screw, 11 is a threaded bolt, 12 is a rotation stop head, 13 is a pad, and 14 is a washer. Patent applicant Asahi Kasei Industries Co., Ltd. Agent Patent attorney Shukichi Nakagawa

Claims (1)

[Claims] In a column-beam joint structure in which a beam end plate is attached and fixed to a beam joint closing section member in which tap screws are pre-drilled, a headless threaded bolt and a nut whose tension is controlled in advance to be threaded onto the threaded bolt are manufactured. A beam joint structure for a column-beam joint, characterized in that the beam end plate is attached and fixed to a beam joint closed cross-section member using high-strength bolts in combination with a washer and a high-strength bolt.