Inelastic Displacement Ratios for Seismic Assessment of Structures Subjected to Forward-Directivity Near-Fault Ground Motions

Ruiz‐García, Jorge

doi:10.1080/13632469.2010.498560

Cited by 92 publications

(83 citation statements)

References 12 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The pulse is of particular interest from a structural earthquake-engineering point of view, because the demand on the structure is amplified when the natural period of the structure equals the pulse period (e.g., Biggs, 1964;Veletsos et al, 1965;Anderson and Bertero, 1987;Hall et al, 1995). In particular, the pulse period has been shown to be a critical parameter for design spectra, strength-reduction factors, damping modification factors, residual displacements, and ductility demands (Alavi and Krawinkler, 2001;Mavroeidis et al, 2004;Hubbard and Mavroeidis, 2011;Ruiz-Garcia, 2011;Liossatou and Fardis, 2016). Accurate predictions of directivity pulse periods are then crucial for near-fault seismic risk assessment.…”

Section: Introductionmentioning

confidence: 99%

Spatial Variability of the Directivity Pulse Periods Observed during an Earthquake

Fayjaloun¹,

Causse²,

Cornou³

et al. 2016

Bulletin of the Seismological Society of America

View full text Add to dashboard Cite

The ground velocity pulses generated by rupture directivity effects in the near-fault region can cause a large amount of damage to structures. Proper estimation of the period of such velocity pulses is of particular importance in characterizing near-fault seismic hazard and mitigating potential damage. We propose a simple equation to determine the pulse period as a function of the site location with respect to the fault rupture (defined by the hypocentral distance hypD, the closest distance to the rupture area clsD, and the length of the rupture area that breaks toward the site D) and some basic rupture properties (average rupture speed and average rise time). Our equation is first validated from a dataset of synthetic velocity time histories, deploying simulations of various strike-slip extended ruptures in a homogeneous medium. The analysis of the synthetic dataset confirms that the pulse period does not depend on the whole rupture area, but only on the parameter D. It also reveals that the pulse period is not sensitive to the level of slip heterogeneity on the fault plane. Our model is tested next on a real dataset build from the Next Generation Attenuation-West2 Project database, compiling 110 observations of velocity pulse periods from 10 strike-slip events and 6 non-strike-slip events. The standard deviation of the natural logarithm residuals between observations and predictions is ∼0:5. Furthermore, the correlation coefficient between observations and predictions equals ∼0:8, indicating that despite its simplicity, our model explains fairly well the spatial variability of the pulse periods.

show abstract

Section: Introductionmentioning

confidence: 99%

Spatial Variability of the Directivity Pulse Periods Observed during an Earthquake

Fayjaloun¹,

Causse²,

Cornou³

et al. 2016

Bulletin of the Seismological Society of America

View full text Add to dashboard Cite

show abstract

“…[34][35][36][37], have shown that a ground motion with a distinct velocity pulse tends to increase the elastic spectral response in a narrow period range of the spectra close to the pulse period. The influence of T p on inelastic displacement ratios has been investigated by Ruiz-Garcia [38] and Iervolino et al [39] concluding that an adequate characterization of such ratio should explicitly take into account the period of the pulse.…”

Section: Pulse-like Effectsmentioning

confidence: 99%

Displacement damping modification factors for pulse-like and ordinary records

Mollaioli

Liberatore

Lucchini

2014

Engineering Structures

View full text Add to dashboard Cite

“…* In [13] it is also reported that such effects as there are, they tend to wane with increasing strength reduction factors. This is in contrast with the trend of the equation suggested in [8].…”

Section: Other Coefficients Of Displacement Modification In Ns Conditmentioning

confidence: 99%

“…In [12,13] and elsewhere, it was discussed that C 1 from Equation (4) is not explicitly representative of inelastic displacement ratios in the case of pulse-like ground motions in NS conditions. In [5], Equation (6) was proposed for the (constant-strength) inelastic displacement ratio C R , based on a dataset of pulse-like FD ground motions identified as such in previous works [2,12].…”

Section: Inelastic Displacement Ratio Of Near-source Pulse-like Grounmentioning

confidence: 99%

See 1 more Smart Citation

Accounting for Near-Source Effects in the Displacement Coefficient Method for Seismic Structural Assessment

Baltzopoulos

Chioccarelli

2014

Proceedings of the 4th International Conference on Computational Methods in Structural Dynamics and Earthquake Engineering (COM

View full text Add to dashboard Cite

show abstract

Inelastic Displacement Ratios for Seismic Assessment of Structures Subjected to Forward-Directivity Near-Fault Ground Motions

Cited by 92 publications

References 12 publications

Spatial Variability of the Directivity Pulse Periods Observed during an Earthquake

Spatial Variability of the Directivity Pulse Periods Observed during an Earthquake

Displacement damping modification factors for pulse-like and ordinary records

Accounting for Near-Source Effects in the Displacement Coefficient Method for Seismic Structural Assessment

Contact Info

Product

Resources

About