JPS6217235A - Steel bar rigid connection structure - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION (1) Field of Industrial Application The present invention relates to a steel frame rigid structure for warehouses, gymnasiums, and other buildings using steel frames.

(2) Conventional technology Conventionally, in this type of building, a steel beam is erected on a steel column and the two are rigidly connected. Because local buckling occurs due to lateral forces and other factors, it is necessary to use a steel frame with a small width-to-thickness ratio to provide plastic deformation capability. However, if a steel frame with a large width-to-thickness ratio is used, the steel frame will locally buckle in response to the shaking of the building due to earthquakes or strong winds, making it difficult to follow the deformation.
There is a problem that the structure is not earthquake resistant and wind resistant.

Therefore, in the past, for example, built H-section steel was used as the column steel frame or beam steel frame, and the H-section steel was adjusted so that the width-thickness ratio was small in areas where local buckling was likely to occur, that is, the deformability due to earthquakes etc. The cross-sectional shape is formed to be different for each member at each location so that the width-thickness ratio is small at locations where this is required.

(3) Problems to be Solved by the Invention With such built H-shaped steel, the cross-sectional shape differs depending on each member at each location, so manufacturing is time-consuming and expensive, as well as material costs. It had the disadvantage of being costly.

It is an object of the present invention to provide a steel frame rigid structure that eliminates these drawbacks, is easy to manufacture, and reduces construction costs.

(4) Means for Solving the Problems In order to achieve this object, the present invention provides a structure in which a steel column and a steel beam are in rigid contact with each other, and the present invention provides a structure in which a steel column or a steel beam is made of steel or braces in the vicinity of the rigid contact portion of the steel column or steel beam. It is characterized by fixed concrete reinforcement.

(5) Function The area near the rigid contact area of the steel column or steel beam is reinforced with steel or breathless concrete reinforcement, so local buckling will not occur, and furthermore, this reinforcement material will strengthen the area near the rigid contact area. This makes it possible to use thin rolled H-beams with a large width-to-thickness ratio for the steel columns or steel beams, allowing them to follow deformation during earthquakes, etc., thus increasing their plastic deformation ability and making it possible to absorb earthquake energy, etc. The structure will be earthquake and wind resistant.

(6) Example Figures 1 and 2 show a first example. This is a case where the steel reinforcing material (3) is applied to the steel beam (2) of A strip steel plate (3a) is placed at the center of both sides of the web part (2C).
(3a) is provided protrudingly by welding, and both ends of the upper and lower flange portions (2a) and (2b) are connected to connect the steel plate (3a).
a) Place the steel strip (3) in contact with the tip of (3a).
b) (3b) are welded and these steel plates (3a) (3a
) and (3b) (3b) 4. : The steel reinforcing material (3) is composed of: In this way, the rigid contact portions are reinforced by the reinforcing members (3) (3) at both ends of the steel beam (2), and local buckling does not occur.

Therefore, a thin rolled H-beam with a large width-to-thickness ratio can be used as the steel beam (3), and the middle part of the steel beam (3) where the reinforcing material (3) (3) is not welded has a deformable ifr capacity. It can absorb seismic energy in the event of an earthquake, making it an earthquake-resistant and wind-resistant structure.

Figures 3 and 4 show a second embodiment, in which a steel column (1) of H-section steel supports and fixes upper and lower H-section steel beams (2) (2). This is a case where a steel reinforcing material (3) is applied to the steel beam (2) of the steel column (1) (
2), belt-shaped steel plates (3c) (3c) are welded to protrude from the center of both sides of the web part (lc), and these steel plates (3c) (3c) and the flange part ( A strip steel plate (3d) between the tip of la) (lb)
... (3d) are welded to connect them, and these steel plates (
3c) The steel reinforcing material (3) is constituted by (3c) and (3d) and (3d), and has the same effect as the first embodiment described above.

Note that braceless concrete may be used as the reinforcing material (3), and in this case, it is fixed to the steel column or beam by means such as bolts and nuts.

(7) Effects of the Invention According to the present invention, since the reinforcing material made of steel or breathless concrete is fixed near the rigid contact part of the steel column or the steel beam, the vicinity of the rigid contact part is reinforced and local seats are strengthened. This makes it difficult for bending to occur, making it possible to use thin rolled steel with a large width-to-thickness ratio, reducing material costs, making it easy to manufacture, and reducing production costs. Since the steel columns or steel beams are deformable, they can absorb seismic energy as a whole and have the effect of becoming an earthquake-resistant and wind-resistant structure.

[Brief explanation of the drawing]

Figure 1 is a front view of one embodiment of the present invention, and Figure 2 is its II.
3 is a front view of another embodiment, and FIG. 4 is a sectional view taken along line IV--IV. (1)...Steel frame column (2)...Steel frame beam (3)
... Steel reinforcing material patent applicant Mitsui Construction Co., Ltd. Representative Patent attorney Koyama
Akira Teru 11, VB- Figure 1 Figure 3 Figure 2 b Figure 4

Claims (1)

[Claims] A structure in which a steel frame column and a steel beam are in rigid contact, characterized in that a steel or breathless concrete reinforcing material is fixed to the vicinity of the rigid contact part of the steel column or the steel beam.