Steel and Composite Structures

  • 제18권1호
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  • Pages.165-185
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  • 2015
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  • 1229-9367(pISSN)
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  • 1598-6233(eISSN)
테크노프레스 (Techno-Press)
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Response modification factor of suspended zipper braced frames

  • 투고 : 2013.07.20
  • 심사 : 2014.05.18
  • 발행 : 2015.01.25
⟨ 이전 논문 다음 논문 ⟩

초록

The suspended zipper bracing system is suggested to reduce the flaws of ordinary zipper braced and concentric inverted V braced frames. In the design procedure of suspended zipper bracing systems, columns and top story truss elements are strengthened. This bracing system show different performances and characteristics compared with inverted V braced and ordinary zipper frames. As a result, a different response modification factor for suspend zipper frames is needed. In this research paper, the response modification factor of suspended zipper frames was obtained using the incremental dynamic analysis. Suspended zipper braced frames with different stories and bay lengths were selected to be representations of the design space. To analyze the frames, a number of models were constructed and calibrated using experimental data. These archetype models were subjected to 44 earthquake records of the FEMA-P695 project data set. The incremental dynamic analysis and elastic dynamic analysis were carried out to determine the yield base shear value and elastic base shear value of archetype models using the OpenSEES software. The seismic response modification factor for each frame was calculated separately and the values of 9.5 and 13.6 were recommended for ultimate limit state and allowable stress design methods, respectively.

키워드

참고문헌

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피인용 문헌

  1. Seismic analysis of steel structure with brace configuration using topology optimization vol.21, pp.3, 2016, https://doi.org/10.12989/scs.2016.21.3.501
  2. Computation of R Factor for Steel Moment Frames by Using Conventional and Adaptive Pushover Methods vol.42, pp.3, 2017, https://doi.org/10.1007/s13369-016-2257-5
  3. An approximate method for determining the behavior factor of RCMRFs with vertical irregularity vol.28, pp.3, 2021, https://doi.org/10.12989/cac.2021.28.3.243