A probabilistic approach for seismic demand estimation of steel moment frames considering capacity uncertainty

Yancheshmeh, Behzad Shokrollahi; Adeli, Mehdi Mahdavi

doi:10.1007/s42107-023-00623-3

Cited by 2 publications

(1 citation statement)

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“…In fact, the fragility curve describes the ratio between the intensity of the earthquake and the level of possible seismic damage. To accurately determine such a ratio, it is important to choose the correct intensity of the earthquake in the location of the structure [25,26]. In this paper, for IDA, damage measure and intensity measure are assumed to be the maximum drift ratio of the SMRFs and 5% damped first mode spectral acceleration, S a (T 1 , 5%), respectively, and fragility curves are depicted just for the collapse performance (CP) level.…”

Section: Ida and Fragility Curvesmentioning

confidence: 99%

Probabilistic investigation of the pounding effect in steel moment resisting frames with equal and unequal heights

Sadeghi,

Kazemi,

Razmkhah

et al. 2024

Res. Eng. Struct. Mat.

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In this research, the influence of the pounding phenomenon of two adjacent steel moment resisting frames (SMRFs) with 2 and 5-story with an intermediate ductility is investigated by considering equal and unequal heights under seismic excitations. In this way, two scenarios are applied. The first and second scenarios are related to the pounding of two SMRFs with an equal height (both frames with 2-story) and an unequal height (2-story and 5-story frames), respectively. In the following, at first, sensitivity analysis is conducted by the Monte Carlo simulation (MCS) method. Then, the collapse performance of the studied SMRFs is evaluated by incremental dynamic analysis (IDA), and fragility curves under 14 far-fault records and also, the failure probability is predicted by the Kriging meta-model. The results of sensitivity analysis indicate that the yield strength of cross-sections and dead load were the greatest effect on failure probability computation. Also, in the statistical level of 50%, the collapse probability of SMRFs with an equal height is 17% compared to the SMRFs with an unequal height. Also, the results of the Kriging meta-model show that the failure probability is increased by 65% in an unequal height versus an equal height.

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Section: Ida and Fragility Curvesmentioning

confidence: 99%