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Reinforcing I-beams with web openings using fillet-welded perforated plate

English (英語)

Proceedings of International Structural Engineering and Construction

8(1)

STR-09-1-STR-09-6

ISEC Press

2021-07

2022-10-07

In beam-to-column connections in steel structures, it is crucial for stresses to be transmitted from the beam to column smoothly. However, openings of I-section steel beam web are often made at the end of the beam when piping facilities pass through the beam. Openings at the end of the I-section steel beam reduce its flexural strength, shear strength, and deformation capacity of the steel beam ends. If the openings are made at the end of a beam, the beam should somehow be reinforced to achieve acceptable stress transmission performance and good deformation capacity. There are several existing ways of reinforcing openings at the end of a beam in Japan; however, simpler and more economical reinforcing methods are desired. In this paper, a new reinforcing method of openings at the beam ends is proposed. The proposed reinforcement is a perforated steel plate connected to the beam web using fillet welding. The proposed method is simple, easier to produce, and easier to construct compared to conventional methods. An experiment was conducted to verify the performance of the proposed reinforcing method. The results of the experiments showed that the proposed reinforcing method can be designed conservatively using Kato’s formula.

Shear span ratio

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