JPH10115002A - Method for connection between column and beam of steel structure and connecting hardware - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce a length of connection part of a connecting hardware connected to a flange of a beam to save a space of connection, to have no possibility to reduce the rigidity of members, and to increase reliability by connecting double pair of surfaces in a connection method for a column and a beam of a steel structure, which fastens a base plate to a surface of the column and bolts a horizontal plate to a flange of the beam with using a connecting hardware which stands up from the base plate perpendicular to the horizontal plate fastened to a surface of the flange of the beam. SOLUTION: A first connecting hardware 8 is combined to a second and a third connecting hardware 9 and 11 opposite to the first connecting hardware 8 to be at an upper and a lower position, and a flange of a beam 3 is interposed between horizontal members 4a and 4b mutually to be bolted. Then, the second and the third connecting hardware 9 and 11 having the horizontal plate 4b fastened to an inner side of the flange of the beam are connected to have a space which a web 3c of the beam is interposed between, and the end of the flange of the beam 3 is put as close to a surface of a column 2 as possible to reduce a space.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and a metal joint for joining a column and a beam having a steel structure, for joining members such as civil engineering and buildings.

[0002]

2. Description of the Related Art A method for joining a column 2 and a beam 3 having a steel structure is described in Japanese Patent Publication No. 56-23015.
FIGS. 3 and 4 show the use of a specially shaped metal joint 1 integrally manufactured by casting or forging instead of the split tee.

[0003] The metal joint 1 is made of an upper flange 3 of a beam 3.
a and a lower plate 3b, and a horizontal plate 4 having a bolt hole capable of bolting the lower plate 3b is provided on the bottom plate 7 so as to project outward from the base of the horizontal plate 4. The thickness is gradually reduced, and a bolt hole 6 having a pedestal 5 is provided.

[0004] The bottom plate 7 is placed at a predetermined position of the column 2, the joining hardware 1 is bolted, and the horizontal plate 4 is attached to the upper flange 3 of the beam 3.
a and the lower flange 3b are superimposed and joined with a high-strength bolt 10.

[0005] In this way, since the base portion including the bottom plate 7 of the horizontal plate 4 is gradually reduced in thickness toward the outside, the conventional joining method using split ties or welding ties can be used. On the other hand, since the proof strength in comparison with the moment of the hardware is remarkably large, it is possible to expect a high degree of fixing by dramatically increasing the joining efficiency between the column and the beam, and it is possible to improve the continuous beam effect. Also, since welding work on site is not required, the work of joining the column and the beam can be performed easily and quickly.

[0006]

However, since the one shown in FIGS. 3 and 4 is a one-plane shear joint using a high-strength bolt 10, the upper and lower flanges 3a and 3b of the beam 3 and the horizontal plate 4 are connected. The joining length became long, and it became a hindrance such as laying a deck plate.

Therefore, it has been studied to reduce the joint length of the metal joint with the beam flange by joining the two surfaces, and a steel-structured column and beam as disclosed in JP-A-51-20423 are examined. There is a joining method. As shown in FIG. 5, the metal joint is divided into an upper first metal joint and a lower second metal joint, and the upper and lower horizontal plates 4 sandwich the flange of the beam. Become. In the case of Japanese Patent Application Laid-Open No. S51-20423, the lower horizontal plate 4 is further divided into two joining hardware arranged side by side.

However, as shown in FIG. 6, when the tensile force P acts from the beam flange, the portion of the bottom plate 7 is easily deformed, and the joining rigidity becomes considerably small.

In view of such circumstances, an object of the present invention is to eliminate the inconvenience caused by the above-mentioned conventional single-plane shear bonding,
A two-sided joint reduces the joint length with the beam flange in the metal joint, and has a high reliability because there is no danger that the rigidity of the member will be reduced even if the metal joint is divided into upper and lower joints. An object of the present invention is to provide a method of joining a pillar and a beam having a structure and a joining hardware.

[0010]

In order to achieve the above object, the present invention provides a method of joining a column and a beam having a steel structure, by forming a horizontal plate overlapping a flange surface of the beam from a bottom plate orthogonal to the horizontal plate. In a method of joining a steel frame column and beam in which the bottom plate is fixed to the surface of the column by using the joint metal that has been raised and the horizontal plate is bolted to the flange of the beam, the joint metal is assembled in a vertical manner. A metal joint having a horizontal plate that is sandwiched between horizontal plate flanges and bolted together and has a horizontal plate overlapping on the inner surface of the flange of the beam is divided into two right and left parts, and a web of the beam is interposed therebetween. The gist of the present invention is that the space between the end of the beam and the surface of the column is reduced by mounting the beam at an interval and making the end of the beam as close to the surface of the column as possible.

[0011] Further, as a metal joint for a column and a beam having a steel structure, a horizontal plate having substantially the same width as the flange width of the beam and overlapping the flange surface of the beam is raised from a bottom plate perpendicular to the horizontal plate. Is a first metal fitting provided with a bolt hole having a pedestal and having a thickness gradually reduced outward from the base of the horizontal plate, and a flange surface of the beam having a width of about half or less of the flange width of the beam. A horizontal plate that overlaps with the horizontal plate is raised from the bottom plate in a direction perpendicular to the horizontal plate, and the bottom plate gradually decreases in thickness outward from the base of the horizontal plate and has second and second bolt holes having a pedestal. 3 and the second and third metal joints are opposed to the first metal joint in parallel except for the thickness of the web of the beam, and the end of the beam is brought closer to the bottom plate. The point is that the horizontal plate is It is intended.

According to the present invention, by joining two horizontal plates that overlap with the flange of the beam, ideally, one-sided shear is changed to two-sided shear. The joint length with the beam flange can be halved.

Further, as shown in FIG. 10, when the metal joint 1 is an integral body, even when a tensile force P acts from the beam flange as shown in FIG. When divided and separated, a gap acts as shown in FIG. According to the present invention, since the flange of the beam penetrates deeply into this gap and becomes the same as the state where the gap is filled as shown in FIG. 3 (c), there is no reduction in rigidity, and it is possible to exhibit the same function as the integrated type. is there.

[0014]

Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a perspective view showing an embodiment of a metal joint used for a method of joining a column and a beam having a steel structure according to the present invention, and FIG. 2 is an embodiment of a method of joining a column and a beam having a steel structure according to the present invention. FIG.

First, the metal joint of the present invention will be described. As shown in FIG.
And a combination of the second metal fitting 9 and the third metal fitting 11 facing the metal bonding piece 8 of FIG.

The first metal fitting 8 has a width substantially equal to the width of the flange of the beam 3 and is overlapped on the flange surface of the beam 3.
a is raised from the bottom plate 7 in the direction orthogonal to the horizontal plate 4a, and the horizontal plate 4a is provided with bolt holes for bolting the horizontal plate 4a to other members as in the conventional example.
Has a thickness gradually reduced outward from the base of the horizontal plate 4a, and a bolt hole 6 having a pedestal 5 is provided.

The second metal fitting 9 and the third metal fitting 11 are:
A horizontal plate 4b having a width of about half or less of the flange width of the beam 3 and overlapping the flange surface of the beam 3 is raised from a bottom plate 7 in a direction orthogonal to the horizontal plate 4a. Similarly to the horizontal plate 4a of the first metal fitting 8, a bolt hole for bolting with another member is provided, and the bottom plate 7 is gradually reduced in thickness outward from the base of the horizontal plate 4b. A bolt hole 6 having a pedestal 5 is provided.

That is, the second metal fitting 9 and the third metal fitting 11 are equal in size to each other and have a width equal to that of the first metal fitting 8.
, The first metal joint 8 is divided into two parts at right and left with an interval for interposing the web 3c of the beam 3 therebetween. In the illustrated example, the metal fitting for the upper flange 3a of the beam 3 is used. However, in the case of the metal fitting for the lower flange, the first metal fitting 8 is located on the lower side, and the second metal fitting 9 and the third metal fitting 9 are connected together. The joining hardware 11 comes to the upper side.

The first metal fitting 8, the second metal fitting 9, and the third metal fitting 11 are mounted on the bottom plate 7 at a predetermined position of the column 2 and fastened with high-strength bolts 10.

At this time, the first metal joint 8 is attached to the horizontal plate 4.
a is made to overlap the outer surface of the flange of the beam 3 (the upper flange 3a in the figure), and the second metal fitting 9 and the third metal fitting 11 are made so that the horizontal plate 4b overlaps the inner surface of the flange. The second metal fitting 9 and the third metal fitting 11 are arranged side by side at an interval α that is equal to or greater than the thickness of the web 3 c of the beam 3.

The horizontal plate 4b of the second metal fitting 9 and the third metal fitting 11 overlaps with the inner surface of the flange (the upper flange 3a in the figure) of the beam 3, and the second metal fitting 9 The web 3c of the beam 3 is interposed between the third metal fitting 10 and the web 3c, and the web 3c is sandwiched between the second metal fitting 9 and the third metal fitting 10.

The horizontal plate 4a or the horizontal plate 4b and the flange of the beam are bolted with high strength bolts 10.

In this way, the flange of the beam is deeply inserted into the gap between the first metal fitting 8 and the second metal fitting 9 and the third metal fitting 11 opposed thereto, and the end of the beam is attached to the bottom plate 7. The horizontal plate 4 with the flange end of the beam 3 approaching
By overlapping a and 4b on the flange of the beam 3, the end of the beam 3 can be as close as possible to the surface of the column 2.

When the beam 3 is joined, the lower surface of the upper flange 3a of the beam 3 is temporarily supported by the horizontal plate 4b of the second metal fitting 9 or the third metal fitting 11, and then the first upper metal joint is formed. If the hardware 8 is attached, the beam 3 can be temporarily received.

[0025]

As described above, the method of joining a column and a beam having a steel structure according to the present invention and the joining hardware can reduce the joining length of the joining metal to the beam flange by joining the two surfaces, thereby saving space. It is possible to achieve the same function as an integrated type without a decrease in rigidity because it becomes the same as a state in which the flange of the beam enters deeply and fills the gap between the members, as well as joining is there.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a first embodiment of a joint hardware used in a method of joining a column and a beam having a steel structure according to the present invention.

FIG. 2 is a side view showing a first embodiment of a method for joining a column and a beam having a steel structure according to the present invention, and a joint fitting.

FIG. 3 is a side view showing a conventional example.

FIG. 4 is a side view of a main part showing a conventional example.

FIG. 5 is a side view of an improved example of the conventional example.

FIG. 6 is a side view showing a defect of an improved example of the conventional example.

FIG. 7 is an explanatory diagram showing the operation of the present invention.

[Explanation of Signs] 1 ... joining hardware 2 ... pillar 3 ... beam 3a ... upper flange 3b ... lower flange 3c ... web 4, 4a, 4b ... horizontal plate 5 ... pedestal 6 ... bolt hole 7 ... bottom plate 8 ... first joining Hardware 9 ... Second joining hardware 10 ... High strength bolt 11 ... Third joining hardware

 ──────────────────────────────────────────────────続 き Continuing from the front page (72) Inventor Toshio Saeki 2-9-1-1, Tobita-Ki, Chofu-shi, Tokyo Kashima Construction Co., Ltd. (72) Inventor Naoki Tanaka 2-9-1-1, Tobita-Shi, Chofu-shi, Tokyo Kashima Construction Co., Ltd.Technical Research Institute (72) Inventor Hidenari Matsuo 1-9-1, Kitahama-ku, Wakamatsu-ku, Kitakyushu-shi, Fukuoka Hitachi Metals Co., Ltd. No. 1-13 Inside Hitachi Koki Co., Ltd.

Claims (2)

[Claims] 1. A horizontal plate superimposed on a flange surface of a beam is fixed to a column surface by using a metal fitting raised from a bottom plate in a direction orthogonal to the horizontal plate. In a method of joining a column and a beam having a steel structure to be bolted to the horizontal plate, the metal fittings are vertically combined to sandwich the flange of the horizontal plate between the beams and to be bolted, and overlap with the inner surface of the flange of the beam. A metal joint having a horizontal plate is divided into two parts on the left and right, and they are attached with a space between them to interpose a beam web between them. A method of joining a column and a beam having a steel structure, characterized in that a space between the column and the surface is reduced. 2. A horizontal plate having substantially the same width as the flange width of the beam and rising from the bottom plate perpendicular to the horizontal plate and overlapping the flange surface of the beam, and the bottom plate gradually moves outward from the base of the horizontal plate. A first metal fitting having a thickness reduced and a bolt hole having a pedestal provided thereon, and a horizontal plate overlapping the flange surface of the beam with a width of about half or less of the flange width of the beam in a direction perpendicular to the horizontal plate. From the bottom plate of the horizontal plate, the bottom plate gradually decreases in thickness outward from the base of the horizontal plate, and is formed of second and third joint hardware provided with bolt holes having a pedestal. On the other hand, the second and third metal joints are opposed to each other in parallel except for the web thickness of the beam, and the horizontal plate is overlapped with the flange of the beam by bringing the end of the beam closer to the bottom plate. Joints made of steel columns and beams.