Decrease of stress concentration in bending connections with developed tubular web in semi-deep beam

Document Type : Original Article

Authors

1 Faculty member of IAU of Shahr-e-Qods Branch

2 PhD student

3 Faculty member of IAU

Abstract

In this study, the experimental properties of a new type of reduced-beam section ( RBS ) connection , called TW-RBS is investigated in recent years . In the TW - RBS connection , a steel tube is placed instead of beam flat web . In this paper , the proposed connection is named as ( SW-RBS ). In the SW - RBS connection, two semilunar parts are placed instead of the flat web in empty area of the web of beam. semilunar parts are made of steel tube that are cut. The beams that used for the specimens are semi-deep. The results of cyclic behavior of specimens show that in the SW-RBS in comparison with TW - RBS , the connection is able to increase the relative displacement of the story (drift) by 7 %, which is higher than the value specified by the current seismic code . According to results of proposed connection, increase the plastic hinge area of the beam caused by decrease stress concentration at the connection of the tube and beam and no fracture and cracking occurred at this area . The demand of the column face in comparison with other area dropped by more than 35 % .

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References

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Journal of Structural and Construction Engineering
Volume 8, Issue 7 - Serial Number 46
October 2021
Pages 294-313

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History

  • Receive Date: 12 March 2020
  • Revise Date: 28 November 2021
  • Accept Date: 23 September 2020

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