Empirical Response Spectral Attenuation Relations for Shallow Crustal Earthquakes

Abrahamson, Norman A.; Silva, Walter J.

doi:10.1785/gssrl.68.1.94

Cited by 934 publications

(755 citation statements)

References 4 publications

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“…The selected measures of source-to-site distance are the epicentral distance R epi as a point-source distance metric, and the Joyner-Boore distance R JB as an extended-source distance metric. The present evaluation on the linear or logarithmic dependencies of the natural logarithm of the collapse capacities is consistent with the studies of Cornell et al (1979), Abrahamson and Silva (1997), Bianchini et al (2009), andBojórquez andIervolino (2011) on the considered ground motion characteristics, such as the magnitude, the natural logarithm of the sourceto-site distance, and the natural logarithm of the scaling factors. Initially, scatter plots have been used to explore by visual inspection the possible linear or non-linear relationship between paired sets consisting of the natural logarithm of the collapse capacities and the considered parameter.…”

Section: Sufficiency and Scaling Robustness Of The Utilized Intensitysupporting

confidence: 92%

Intensity measures that reduce collapse capacity dispersion of P-delta vulnerable simple systems

Tsantaki

Adam

Ibarra

2016

Bull Earthquake Eng

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The study evaluates two alternative seismic intensity measures (IMs) that reduce the collapse capacity dispersion of inelastic non-degrading single-degree-of-freedom (SDOF) systems vulnerable to the P-delta effect. This dispersion of collapse capacity is caused by record-to-record variability, which refers to frequency content variation of the ground motions used in the dynamic analyses. This reduction (of dispersion) is achieved utilizing efficient elastic pseudo-spectral acceleration based IMs. The first set of evaluated IMs is based on the spectral pseudo-acceleration averaged in a certain period interval between the structural period and an elongated period. The ''optimal'' lower bound of the period interval corresponds to the structural period of vibration, since naturally in an SDOF system no higher modes effects do exist. The ''optimal'' upper bound of the period interval for averaging, referred to as elongated period, is found to be 1.6 times the system period. The second IM considered in the study is the 5 % damped spectral pseudo-acceleration at the system period in the presence of gravity loads, which is a single target IM. The most widely accepted IM, the 5 % damped pseudo-spectral acceleration at the system period without P-delta, serves as the benchmark IM. The results show that both proposed IMs lead to a reduction of the collapse capacity dispersion compared to the benchmark IM outcomes. The IM based on the averaged spectral acceleration of the ''optimal'' period interval is more efficient up to a negative post-yield stiffness ratio of 0.45, while the single target IM based on the system period in the presence of gravity loads is superior for extreme negative post-yield stiffness ratios larger than 0.45. Additionally, the sufficiency and the scaling robustness property of the considered IMs with respect to the natural logarithm of the record-dependent individual collapse capacities is discussed for a wide range of structural configurations.

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Section: Sufficiency and Scaling Robustness Of The Utilized Intensitysupporting

confidence: 92%

Intensity measures that reduce collapse capacity dispersion of P-delta vulnerable simple systems

Tsantaki

Adam

Ibarra

2016

Bull Earthquake Eng

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“…1). These spectra are generated by modifying the empirical median and 84th percentile response spectra predicted by Abrahamson and Silva [9].…”

Section: Review Of Strong Motion Datamentioning

confidence: 99%

State-of-the-art of geotechnical earthquake engineering practice

Finn

2000

Soil Dynamics and Earthquake Engineering

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Major developments in geotechnical earthquake engineering practice over the last 15 years are reviewed. The objectives of the review are to present a coherent view of the current state of practice at the highest level and to examine trends, which may shape practice in the future. Developments are described in the following areas: speci®cation of design ground motions, dynamic response analysis, evaluation of liquefaction potential, evaluation of residual strength of lique®ed soil, post-liquefaction displacement analysis, and seismic risk analysis. q

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“…The significant ground motion characteristics are those included in the assumed attenuation law (in the example case, the law by [1]), namely, the moment magnitude M, the source-to-site distance R, and the error term ε describing the model uncertainty.…”

Section: Choice Of Immentioning

confidence: 99%

Performance-Based Design as a Strategy for Risk Reduction: Application to Seismic Risk Assessment of Composite Steel-Concrete Frames

Augusti¹,

Ciampoli²

2009

IFIP Advances in Information and Communication Technology

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Abstract. Performance-based design is an efficient strategy for assessing and reducing the risk that a construction violates some performance requirement. In this paper, a procedure for performance-based assessment of seismic risk is illustrated with reference to a composite steel-concrete frame structure. Such risk is conventionally evaluated in a simplified formulation, i.e. as the mean annual frequency of exceeding a threshold level of damage in any significant structural element. The procedure is applied to evaluate the site seismic hazard, the structural damage, the corresponding capacity, and finally the seismic risk of a plane frame, extrapolated from a 3-D structure that was subjected to experimental tests at the ELSA-JRC Laboratory in Ispra, Italy. Specific attention is given to the choice of the intensity and damage measures for use in performance-based seismic risk assessment of composite steel-concrete frames.

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Empirical Response Spectral Attenuation Relations for Shallow Crustal Earthquakes

Cited by 934 publications

References 4 publications

Intensity measures that reduce collapse capacity dispersion of P-delta vulnerable simple systems

Intensity measures that reduce collapse capacity dispersion of P-delta vulnerable simple systems

State-of-the-art of geotechnical earthquake engineering practice

Performance-Based Design as a Strategy for Risk Reduction: Application to Seismic Risk Assessment of Composite Steel-Concrete Frames

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