Effect of Peak Ground
            <i>a/v</i>
            Ratio on Structural Damage

Zhu, T. J.; Tso, W. K.; Heidebrecht, A. C.

doi:10.1061/(asce)0733-9445(1988)114:5(1019)

Cited by 55 publications

(16 citation statements)

References 12 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The ratio of peak ground velocity to peak ground acceleration (PGV/PGA) as a representative of frequency content, has a significant effect not only on peak inelastic response but also on hysteretic energy dissipation and stiffness deterioration of stiffness degrading systems [Zhu et al, 1988]. Also, Liu et al, [2006] found that the maximum of momentary input energy spectra is insensitive to this ratio which is a very important parameter to characterize the damage potential of ground motions.…”

Section: Effect Of Ground Motion Parameters On Idrsmentioning

confidence: 99%

Application of Wavelet Transforms on Characterization of Inelastic Displacement Ratio Spectra for Pulse-Like Ground Motions

Yaghmaei‐Sabegh

2012

Journal of Earthquake Engineering

View full text Add to dashboard Cite

In this article, a simple and effective wavelet-based procedure is implemented for describing principle features of a special class of motions, pulse-like ground motions, on inelastic displacement ratio spectra (IDRS). The computed spectra supply a simple estimation of maximum inelastic displacement demand from the corresponding elastic one. The results of analysis in this work provide a suitable platform for quantification of pulse effects into IDRS and highlight the need to better understanding of this effect on demand estimation. It is concluded that the pulse has a significant influence on IDRS of pulse-like ground motions for systems with high ductility level.

show abstract

Section: Effect Of Ground Motion Parameters On Idrsmentioning

confidence: 99%

Application of Wavelet Transforms on Characterization of Inelastic Displacement Ratio Spectra for Pulse-Like Ground Motions

Yaghmaei‐Sabegh

2012

Journal of Earthquake Engineering

View full text Add to dashboard Cite

show abstract

“…Manfredi et al [8] advised a dimensionless compound index I M to account for the cumulative damage of structures. PGV/PGA can describe the frequency characteristic of ground motions [18,32], which is also employed to characterize the intensity of near-fault ground motions [7]. If PGV/PGA ratio is larger, it means that the ground motion could have long-period velocity pulse; 1262 D. YANG, J. PAN AND G. LI hence, affects the seismic response and damage demand of structures.…”

Section: Other Compound Intensity Parametersmentioning

confidence: 99%

Non‐structure‐specific intensity measure parameters and characteristic period of near‐fault ground motions

Yang

Pan

2009

Earthq Engng Struct Dyn

View full text Add to dashboard Cite

SUMMARYThis paper focuses on the effects of long-period pulse of near-fault ground motions on the structural damage potential. Two sets of near-fault ground motion records from Chi-Chi, Taiwan earthquake and Northridge earthquake with and without distinct pulse are selected as the input, and the correlation analysis between 30 non-structure-specific intensity measure parameters and maximum inelastic displacements and energy responses (input energy and hysteretic energy) of bilinear single degree of freedom systems are conducted. Based on the frequency characteristic of near-fault ground motions with remarkable longperiod components, two intensity indices are proposed, namely, the improved effective peak acceleration (IEPA) and improved effective peak velocity (IEPV). In addition a new characteristic period of these ground motions is defined based on IEPA and IEPV. Numerical results illustrate that the intensity measure parameters related to ground acceleration present the best correlation with the seismic responses for rigid systems; the velocity-related and displacement-related parameters are better for medium-frequency systems and flexible systems, respectively. The correlation curves of near-fault ground motions with velocity pulse differ from those of ground motions without pulse. Moreover, the improved parameters IEPA and IEPV of near-fault impulsive ground motions enhance the performance of intensity measure of corresponding conventional parameters, i.e. EPA and EPV. The new characteristic period based on IEPA and IEPV can better reflect the frequency content of near-fault ground motions.

show abstract

“…The examination of recorded seismic events has shown that earthquakes with a very high PGA could not produce appreciable structural damage, while earthquakes with a very low PGA could produce an unexpectedly high level of destruction. The PGA/PGV ratio is indicated by different authors as being a measure of destructiveness (Zhu et al, 1988). Therefore PGA/PGV ratio is used as damage index in this study.…”

Section: Effect Of Ground Motion Characteristics (Pga/pgv Ratio) On Tmentioning

confidence: 99%

Effect of lead rubber bearing characteristics on the response of seismic-isolated bridges

et al. 2008

View full text Add to dashboard Cite

A parametric study is conducted to investigate the effect of lead rubber bearing (LRB) isolator and ground motion characteristics on the response of seismic isolated bridges. The purpose was to investigate the most favorable parameters of the LRB for minimum earthquake response of the isolated bridge system for different ground motions. The important parameters included are: ground motion characteristic by considering peak ground acceleration to peak ground velocity, PGA/PGV ratio as damage index; characteristic strength, Q d of the LRB isolator normalized by the weight acting on the isolator; flexibility of isolator by varying post yield time period, T d ; and yield stiffness to post yield stiffness, K u /K d ratio. The performance of seismic isolated bridge is measured by the variation of maximum isolator displacement (MID), maximum isolator force (MIF), deck acceleration and pier base shear. For a specified ground motion, smaller MID and MIF are regarded as indicator of better seismic performance. It is found that there exists a particular value of Q d /W, T d and K u /K d for which the MID, MIF, deck acceleration and pier base shear attain the minimum values. Finally the recommendations are made which are useful for the design engineers at the preliminary seismic isolation design of the bridges with LRB isolator for the ground motion having different characteristics.

show abstract

Effect of Peak Ground a/v Ratio on Structural Damage

Cited by 55 publications

References 12 publications

Application of Wavelet Transforms on Characterization of Inelastic Displacement Ratio Spectra for Pulse-Like Ground Motions

Application of Wavelet Transforms on Characterization of Inelastic Displacement Ratio Spectra for Pulse-Like Ground Motions

Non‐structure‐specific intensity measure parameters and characteristic period of near‐fault ground motions

Effect of lead rubber bearing characteristics on the response of seismic-isolated bridges

Contact Info

Product

Resources

About