Seismic Wave Attenuation for Vrancea Events Revisited

Rădulian, Mircea; Panza, G. F.; Popa, Mihaela; Grecu, Bogdan

doi:10.1080/13632460609350603

Cited by 21 publications

(17 citation statements)

References 16 publications

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“…( ) C the capacitive characteristic, 3 α , 5 α the capacitor coefficients and q the instantaneous electrical charge.…”

Section: Formulation Of the Problemmentioning

confidence: 99%

“…(9)- (13) are the dimensionless displacement of th j story j x , 1, 2 j = , the angular displacement of the rotor 3 x , and the dimensionless instantaneous electrical charge 4 x . The resonance condition with the building is given by 3 1 x′ = . In this case In the case of (7), the equation (13) …”

Section: -(3)mentioning

confidence: 99%

“…The time variation of the angular velocity 3 x of the DC motor without/with the electromechanical vibration absorber, are simulated in Figures 3 and 4, respectively, during the transition through the resonance region. Figure 3 shows that in the case of no coupling between the electromechanical vibration absorber and the structure, the vibration amplitude increase in the time range 800 1400 ≤ τ ≤ inside resonance, while Figure 4 shows that in the case of coupling, the vibration amplitude significantly reduce in time ranges 800 1400 ≤ τ ≤ inside resonance, and 1400 1600 ≤ τ ≤ , 1600 2000 ≤ τ ≤ below the resonance.…”

Section: Constant Excitation Frequencymentioning

confidence: 99%

“…Deterministic evaluation of the response of the buildings subjected to earthquakes is a valuable tool in obtaining information on the behavior of structures under forces which are statistical in nature [1]- [3]. The influence of the time histories of external excitations on the dynamics of structures can be explored both theoretically and experimentally [4], [5].…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

On the Response of the Small Buildings to Vibrations

Munteanu¹,

Chiroiu²,

Sireteanu³

2014

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

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“…( ) C the capacitive characteristic, 3 α , 5 α the capacitor coefficients and q the instantaneous electrical charge.…”

Section: Formulation Of the Problemmentioning

confidence: 99%

Section: -(3)mentioning

confidence: 99%

Section: Constant Excitation Frequencymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

On the Response of the Small Buildings to Vibrations

Munteanu¹,

Chiroiu²,

Sireteanu³

2014

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

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“…Another Vrancea peculiarity is the much stronger frequency-dependent attenuation effect toward NW for higher frequencies (> 1Hz) than the attenuation toward SE [Radulian et al, 2006]. The unusually small attenuation at low frequency has important consequences on the seismic hazard assessment not only in Romania, but also in the neighboring countries (Bulgaria, Rep. of Moldova, Ukraine and even Russia).…”

Section: Introductionmentioning

confidence: 99%

Earthquake Source and Local Geology Effects on the Seismic Site Response

Kouteva-Guentcheva

Paskaleva²,

Panza

2009

Coupled Site and Soil-Structure Interaction Effects With Application to Seismic Risk Mitigation

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Strong shallow and intermediate-depth scenario earthquakes for two major cites in Bulgaria are discussed. The contribution of the earthquake source and the local site geology to the seismic input is illustrated. Due to the lack of strong motion records a neo-deterministic seismic hazard assessment procedure is used to generate synthetic seismic signals. After some parametric analyses the computed signals are validated against the few available data. Prognostic estimates of the dynamic coefficient for the target sites are performed with respect to the defined scenario earthquakes and local site models, corresponding to the Eurocode 8 ground types A, B and C. The obtained results show that: (1) the seismic source influence on the seismic input at a given site is comparable with that of the local site geology; (2) the dynamic coefficients, computed for accelerograms (observed and computed) due to strong intermediate-depth Vrancea earthquakes overestimate significantly the values recommended by the Eurocode 8 (EC8) for periods T > 1s.

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Ground-motion prediction equations for the intermediate depth Vrancea (Romania) earthquakes

Sokolov

Bonjer

Wenzel

et al. 2008

Bull Earthquake Eng

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We present the regional ground-motion prediction equations for peak ground acceleration (PGA), peak ground velocity (PGV), pseudo-spectral acceleration (PSA), and seismic intensity (MSK scale) for the Vrancea intermediate depth earthquakes (SE-Carpathians) and territory of Romania. The prediction equations were constructed using the stochastic technique on the basis of the regional Fourier amplitude spectrum (FAS) source scaling and attenuation models and the generalised site amplification functions. Values of considered ground motion parameters are given as the functions of earthquake magnitude, depth and epicentral distance. The developed ground-motion models were tested and calibrated using the available data from the large Vrancea earthquakes. We suggest to use the presented equations for the rapid estimation of seismic effect after strong earthquakes (Shakemap generation) and seismic hazard assessment, both deterministic and probabilistic approaches.

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Seismic Wave Attenuation for Vrancea Events Revisited

Cited by 21 publications

References 16 publications

On the Response of the Small Buildings to Vibrations

On the Response of the Small Buildings to Vibrations

Earthquake Source and Local Geology Effects on the Seismic Site Response

Ground-motion prediction equations for the intermediate depth Vrancea (Romania) earthquakes

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