Residual displacement demands of conventional and dual oscillators subjected to earthquake ground motions characteristic of the soft soils of Mexico City

Guerrero, Héctor; Ruiz‐García, Jorge; Ji, Tianjian

doi:10.1016/j.soildyn.2017.04.014

Cited by 37 publications

(10 citation statements)

References 22 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…These inelastic response spectra are derived through nonlinear dynamic analyses performed by assuming an equivalent viscous damping ratio of 5%. The extended Bouc–Wen model with α = 0 . 05 and β = 0 . 7 is assumed as a target system (Christopoulos et al, 2003; Guerrero et al, 2017). Five values of constant ductility factor or strength reduction ratio, namely, 2, 4, 6, 8, and 10, are utilized.…”

Section: Discussionmentioning

confidence: 99%

Inelastic response spectra of self-centering structures with the flag-shaped hysteretic response subjected to near-fault pulse-type ground motions

Dong

Han

et al. 2021

Earthquake Spectra

View full text Add to dashboard Cite

Many studies on the inelastic response spectra have mainly focused on structures with the conventional hysteretic behavior. However, for self-centering structures with the flag-shaped (FS) hysteretic behavior, the corresponding study is limited. The primary aim of this study is to investigate the inelastic response spectra of self-centering structures with FS hysteretic behavior subjected to the near-fault pulse-type ground motion. To this end, the smooth FS hysteretic model based on Bouc–Wen model is developed, and the characteristics of pulse-type ground motions are described in detail. It is found that the general features of inelastic response spectra of the FS model are sensitive to the acceleration-, velocity-, and displacement-sensitive spectral regions of the ground motion. The inelastic displacement, velocity, acceleration, and ductility factor spectra of the FS hysteretic model for pulse-type ground motions are much larger than those for ordinary ground motions, while the residual displacement spectra under the two types of ground motions are both very small due to its self-centering capacity. Moreover, the inelastic response spectra are affected by the ground motion characteristics and structural hysteresis behavior, especially the large pulse period and peak ground velocity (PGV) significantly increase the inelastic displacement, velocity, and acceleration spectra.

show abstract

Section: Discussionmentioning

confidence: 99%

Inelastic response spectra of self-centering structures with the flag-shaped hysteretic response subjected to near-fault pulse-type ground motions

Dong

Han

et al. 2021

Earthquake Spectra

View full text Add to dashboard Cite

show abstract

“…It is worth mentioning that the parametric analyses were repeated also using other ground motion sets such as the SIMBAD database 52 and the far‐fault records of the FEMA P695 project, 53 leading to only slightly different results, thus confirming the overall trend of variation of the dispersion values with respect to the nondimensional parameters analyzed. Moreover, the obtained estimates may change significantly by using a different constitutive law for describing the hysteretic response of the SDOF system representing the frame (see, e.g., Guerrero et al 31 and Liossatou and Fardis 51 ).…”

Section: Parametric Studymentioning

confidence: 99%

“…This does not allow the definition of general indications regarding the influence of the strength ratio, stiffness ratio, and target design ductility of BRBFs and MRFs as well as the optimal choice of their values. Only recently, Guerrero et al 31 performed a statistical analysis including dual systems modeled as single degree of freedom (SDOF) oscillators subjected to a large set of ground motions records. This study provides insights on the influence of several design parameters such as the post‐yielding stiffness ratio, the displacement ductility, and the lateral strength ratio, on the seismic response of the structures.…”

Section: Introductionmentioning

confidence: 99%

Seismic performance of dual systems coupling moment‐resisting and buckling‐restrained braced frames

Freddi

Tubaldi

Zona

et al. 2020

Earthq Engng Struct Dyn

View full text Add to dashboard Cite

show abstract

“…The authors found that the residual displacements came out on average equal to about a constant fraction of the peak inelastic displacements, regardless of the presence of a velocity pulse in the ground motions. Recently, Guerrero et al (2017), Ji et al (2018), and Ruiz-Garcı´a and studied the residual displacements normalized by the elastic spectral ones for SDOF systems subjected to ground motions recorded at soft-soil sites. The spectral trend of residual displacement ratios for the soft-soil sites was found to be different from the spectral trend for firm sites.…”

Section: Introductionmentioning

confidence: 99%

Study on normalization of residual displacements for single-degree-of-freedom systems

Feng

Gong

2021

Earthquake Spectra

View full text Add to dashboard Cite

Residual displacement spectrum is one of the most important means to predict the permanent deformation of structures after the earthquake, and various normalizations of residual displacements have generally been used for construction of the spectrum. However, the issue regarding the merits and drawbacks of each normalization has not yet been investigated thoroughly. A comparison between two normalizations that relate the residual displacements to the elastic and inelastic displacements is made in terms of the effect of ground motion and structural characteristics by means of the results of nonlinear time history analysis. The statistical results reveal that the residual-to-peak-inelastic displacement ratios have the advantages of small dispersion, samples without any outliers, and relatively symmetric distribution, which benefits from the strong correlation between residual and peak inelastic displacements. Moreover, the residual-to-peak-inelastic displacement ratios are almost independent of site conditions, significant duration, and natural periods. Consequently, the peak inelastic displacements are superior to the elastic ones as an intermediate step for residual displacements estimation, provided that the peak inelastic displacements are estimated with a low uncertainty. For providing alternatives to estimate residual displacement demands, the constant-strength residual displacement spectra are developed for both normalizations.

show abstract

Residual displacement demands of conventional and dual oscillators subjected to earthquake ground motions characteristic of the soft soils of Mexico City

Cited by 37 publications

References 22 publications

Inelastic response spectra of self-centering structures with the flag-shaped hysteretic response subjected to near-fault pulse-type ground motions

Inelastic response spectra of self-centering structures with the flag-shaped hysteretic response subjected to near-fault pulse-type ground motions

Seismic performance of dual systems coupling moment‐resisting and buckling‐restrained braced frames

Study on normalization of residual displacements for single-degree-of-freedom systems

Contact Info

Product

Resources

About