Steel and Composite Structures

  • 제1권1호
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  • Pages.145-158
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  • 2001
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  • 1229-9367(pISSN)
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  • 1598-6233(eISSN)
테크노프레스 (Techno-Press)
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Effects of near-fault loading and lateral bracing on the behavior of RBS moment connections

  • 발행 : 2001.03.25
⟨ 이전 논문 다음 논문 ⟩

초록

An experimental study was conducted to evaluate the effects of loading sequence and lateral bracing on the behavior of reduced beam section (RBS) steel moment frame connections. Four full-scale moment connections were cyclically tested-two with a standard loading history and the other two with a near-fault loading history. All specimens reached at least 0.03 radian of plastic rotation without brittle fracture of the beam flange groove welds. Two specimens tested with the nearfault loading protocol reached at least 0.05 radian of plastic rotation, and both experienced smaller buckling amplitudes at comparable drift levels. Energy dissipation capacities were insensitive to the types of loading protocol used. Adding a lateral bracing near the RBS region produced a higher plastic rotation; the strength degradation and buckling amplitude were reduced. A non-linear finite element analysis of a one-and-a-half-bay beam-column subassembly was also conducted to study the system restraint effect. The study showed that the axial restraint of the beam could significantly reduce the strength degradation and buckling amplitude at higher deformation levels.

키워드

참고문헌

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피인용 문헌

  1. Hysteretic behaviour of dissipative bolted fuses for earthquake resistant steel frames vol.85, 2013, https://doi.org/10.1016/j.jcsr.2013.02.016
  2. Hysteretic behavior of dissipative welded fuses for earthquake resistant composite steel and concrete frames vol.14, pp.6, 2013, https://doi.org/10.12989/scs.2013.14.6.547
  3. Promotion of cyclic behavior of reduced beam section connections restraining beam web to local buckling vol.73, 2013, https://doi.org/10.1016/j.tws.2013.07.013
  4. Numerical investigation seismic performance of rigid skewed beam-to-column connection with reduced beam section vol.57, pp.3, 2016, https://doi.org/10.12989/sem.2016.57.3.507
  5. State-of-the-Art Review on Seismic Design of Steel Structures vol.144, pp.4, 2018, https://doi.org/10.1061/(ASCE)ST.1943-541X.0001973
  6. Cyclic Response of Sloped Steel Moment Connections vol.145, pp.7, 2019, https://doi.org/10.1061/(asce)st.1943-541x.0002339
  7. Cyclic Behavior of Electroslag Welded Joints in Beam-to-Built-Up Box Column Steel Moment Connections vol.145, pp.12, 2001, https://doi.org/10.1061/(asce)st.1943-541x.0002409
  8. Seismic design and assessment of steel-concrete frame structures with welded dissipative fuses vol.35, pp.4, 2001, https://doi.org/10.12989/scs.2020.35.4.527