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<p>Since structural design with energy dissipating devices, developed in recent years, is an important step in improving the structure performance, effects of the uncertain behavior of device along with other structural uncertainties are important and need more investigation. To study the uncertain behavior of a yielding metallic damper used in a three-story steel frame (from the SAC project), this research used: (1) the Latin hypercube method for sampling characteristics that cause uncertainty in the damper behavior, (2) the cloud analysis method to apply earthquake uncertainty and (3) the OpenSEES Software to perform time history analysis and compute the engineering demand parameters for a pure frame as well as one equipped with 1, 2 and 3 dampers at each story. The structural responses were used to find: (i) a probabilistic seismic demand model for the maximum inter-story drift and maximum base shear and (ii) fragility curves for different performance levels of frames. The annual frequency of exceeding different performance levels was also calculated from fragility and seismic hazard curves.</p>

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Seismic performance assessment of steel structures equipped with uncertain torsional-yielding dampers

  • 期刊论文

  • 发表日期：

    2025年1月8日

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  • Arezoo Kamali,
  • Seyed Roohollah Mousavi,
  • Mahmoud Miri

摘要

Since structural design with energy dissipating devices, developed in recent years, is an important step in improving the structure performance, effects of the uncertain behavior of device along with other structural uncertainties are important and need more investigation. To study the uncertain behavior of a yielding metallic damper used in a three-story steel frame (from the SAC project), this research used: (1) the Latin hypercube method for sampling characteristics that cause uncertainty in the damper behavior, (2) the cloud analysis method to apply earthquake uncertainty and (3) the OpenSEES Software to perform time history analysis and compute the engineering demand parameters for a pure frame as well as one equipped with 1, 2 and 3 dampers at each story. The structural responses were used to find: (i) a probabilistic seismic demand model for the maximum inter-story drift and maximum base shear and (ii) fragility curves for different performance levels of frames. The annual frequency of exceeding different performance levels was also calculated from fragility and seismic hazard curves.