JPH04107301U - Steel pipe column beam joint - Google Patents

Abstract

(57) [Summary] [Purpose] To facilitate the joining of steel pipe columns and beams,
Reduce its cost and further increase the precision and strength of the steel structure. [Structure] The joining hardware 11 consists of a joining plate 12 in which bolt holes are formed and ribs 13. The tip of the rib 13 is welded to the beam joint position on the outer surface of the steel pipe column 1. The beam 2 is fastened to the joint plate 12 via the tee flange 15 with high-strength bolts 5. .

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

This invention is applicable to steel pipe columns (including concrete-filled steel pipe columns) and steel frames such as H-shaped steel beams. This relates to the structure of the joint between the

0002

[Conventional technology]

Conventionally, when joining a steel pipe column and an H-shaped steel beam by welding, for example, as shown in Figures 11 and 12, The method shown is adopted. In other words, the joining position of the upper and lower flanges 2a of the beam 2 Column 1 is cut at After pouring, attach the upper and lower flanges 2a of the beams 2' to each side of the horizontal stiffening plate 3, and attach them to the columns 1. 2' web 2b is welded, and the short beam 2' of the column-beam joint and the long beam 2' are welded. 2 are connected via a splice plate 4 with high-strength bolts 5.

0003 Further, as an example of high-strength bolt joining, a method shown in FIG. 13 has been proposed. Figure 13 In the case of Tensile joint the beam 2 to the steel pipe column 1, and pour concrete inside the steel pipe column 1. are doing. (Matsui, Tsuda et al.; Steel pipe concrete using long tightening and high strength bolt tensile joints Experimental research on column-beam joints, Abstracts of Academic Lectures at the Architectural Institute of Japan Conference, 1989 1 (See October).

0004

[Problem that the idea aims to solve]

In the case of the welded joints shown in FIGS. 11 and 12 described above, processing is required at the assembly stage. In addition to requiring a large number of man-hours and increasing costs, cutting and welding columns requires It has the disadvantage that it is unfavorable in terms of accuracy. In addition, the scara provided during welding joints It has been pointed out that this is a fatal structural defect (Kanaya, Tabuchi et al.; Influence of joint details on mechanical properties of beam joints - Part 4 Quadratic curve of beam flange (Refer to Architectural Institute of Japan Conference Academic Lecture Abstracts, October 1989).

[0005] In addition, the joining method shown in Fig. 13 allows the joining of steel pipe columns and beams to be performed relatively easily. However, concrete filling must be done on site.

[0006] The present invention aims to solve the above-mentioned problems in the conventional technology. It not only makes it easier to connect pipe columns and beams, it also reduces costs and improves the structure of steel structures. The purpose is to increase accuracy and strength.

[0007]

[Means to solve the problem]

The steel pipe column beam joint of the present invention includes a joint plate with bolt holes formed at predetermined positions, A joint plate consisting of a rib that protrudes out of the plane of the joint plate is used to connect a steel pipe column. It is made by joining beams. The rib tip of the joining hardware is in contact with the outer surface of the steel pipe column. The steel pipe column is then joined by welding, etc., and a predetermined width is created between the joint plate part and the outer surface of the steel pipe column. form a space. Welding of joints to steel pipe columns can be done in advance at the factory. can. In that case, the bolt holes provided in the joint plate and the joint plate Bolt connections are made using the space between the steel pipe column and the outer surface of the steel pipe column.

[0008] The ends of the beams are connected via tee flanges with bolt holes. The easiest method is to provide an end plate at the end of the beam and connect it directly. It may be bolted to a metal joining plate.

[0009] Moreover, the steel pipe columns may be filled with concrete and made of SC construction.

0010

【Example】

Next, embodiments of the present invention will be described with reference to the drawings.

[0011] 1 and 2 show an embodiment of the steel pipe column beam joint of the present invention. In the figure, reference numeral 11 denotes a joint metal consisting of a joint plate 12 with bolt holes formed therein and a rib 13. It is attached to the beam joint position of the outer surface of the steel pipe column 1 by welding etc. in the factory. Ru. A bolt hole is also provided in the beam 2 in advance, and the bolt hole is inserted through the tee flange 15. Beams 2 are fastened to these joints 11 by high-strength bolts 5.

0012 Figure 3 shows how the joint part (part A in Figure 1) is joined, and the high-strength bolt 5 is The tip of the rib 13 of the temporarily fastened joining hardware 11 is joined to the steel pipe column 1 by welding or the like. So After that, the tee flange 15 is attached to the joint metal fittings 11 using high-strength bolts 5 at the site. It is coupled to the joining plate 12. Finally, connect beam 2 and tee flange 15 with high-strength bolts. 5.

[0013] With the above configuration, the bending moment from the beam is transferred to the joining plate of the joining hardware 11. In the 12 sections, the shear force is transmitted through the rib 13 sections of the joining hardware 11, respectively.

[0014] In addition, regarding the transmission of shear force, as shown in Fig. 1, A web plate 16 may also be used.

[0015] 4 to 7 show typical shapes of the joining hardware 11.

[0016] The joining hardware 11 in FIG. 4 has ribs on the left and right sides of the joining plate 12 in which the bolt holes 14 are formed. 13 was formed.

[0017] The joining hardware 11 in FIG. 5 has ribs 13 formed on the top and bottom of the joining plate 12. Ru.

[0018] The joining hardware 11 shown in FIG. 6 is formed into a box shape by making ribs 13 continuous. this In this case, insert the bolt 5 into the bolt hole 14 of the joining plate 12 before joining to the steel pipe column 1. It is necessary to do so.

[0019] The joining hardware 11 in FIG. 7 has a rib 13 provided at the center of the joining plate 12 in the vertical direction. It is.

[0020] In addition, regarding the reinforcement and stiffening of the joint hardware 11, as shown in FIG. A reinforcing rib 17 is provided between the rib 13 of 1 and the outer surface of the steel pipe column 1, or as shown in FIG. The space between the joint metal fitting 11 and the outer surface of the steel pipe column 1 may be filled with mortar 18 or the like. .

[0021] In addition, although the above embodiment is a case where the steel pipe column 1 is a square steel pipe, it can also be a circular steel pipe. The same can be applied as shown in FIG.

[0022]

[Effect of the idea] The metal fittings are joined to the steel pipe column at the factory, and the on-site joining is done using only bolts. As a result, work efficiency can be significantly improved and costs can be reduced.

[0023] A space is created between the joint plate of the joint metal fitting to which the beam is attached and the outer surface of the steel pipe column. Therefore, this space can be used to easily join the beams.

[0024] Since the protrusion of the joining hardware from the column surface can be kept to a minimum, transportation efficiency is also improved. good.

[0025] Since columns and beams are not cut short, the precision of the framework can be improved. Wear.

[Brief explanation of drawings]

FIG. 1 is a front view showing an embodiment of the steel pipe column beam joint of the present invention.

FIG. 2 is a plan view of the same embodiment.

FIG. 3 is an enlarged view showing the state of joining in section A of FIG. 1;

FIG. 4 is a perspective view showing an example of a joining metal fitting.

FIG. 5 is a perspective view showing an example of a joining metal fitting.

FIG. 6 is a perspective view showing an example of a joining metal fitting.

FIG. 7 is a perspective view showing an example of a joining metal fitting.

FIG. 8 is a front view showing a modified example of the joining hardware position.

FIG. 9 is a front view showing a modified example of the joining hardware position.

FIG. 10 is a plan view showing an example in which the present invention is applied to a circular steel pipe column.

FIG. 11 is a front view of a joining type using a horizontal stiffening plate as a conventional example.

FIG. 12 is a plan view thereof.

FIG. 13 is a perspective view showing a conventional long tightening high-strength bolt tension joint type.

[Explanation of symbols]

1... Column, 2... Beam, 3... Horizontal stiffening plate, 4... Splice plate, 5... High strength bolt, 6... End plate, 7... Long tightening high strength bolt, 11... Joining hardware, 12... Joining plate, 13 ...Rib, 14...Bolt hole, 15...Tee flange, 16...Web plate, 17...Reinforcement rib, 18...Mortar

Claims (4)

[Scope of utility model registration request] Claim 1: A joining hardware consisting of a joining plate with bolt holes formed at predetermined positions and a rib protruding out of the plane of the joining plate, with the tip of the rib in contact with the outer surface of a steel pipe column. A steel pipe column beam joint characterized in that a space of a predetermined width is formed between the joint plate and the outer surface of the steel pipe column, and the beam is joined by bolts passed through bolt holes of the joint plate. . 2. The steel pipe column beam joint according to claim 1, wherein the beam is bolted to the joint plate of the joint metal fitting via a tee flange. 3. The steel pipe column beam joint according to claim 1, wherein the beam is bolted to the joint plate of the joint metal fitting via an end plate attached to the end of the beam. 4. The steel pipe column beam joint according to claim 1, wherein the steel pipe column is filled with concrete.