Updated Near-Source Ground-Motion (Attenuation) Relations for the Horizontal and Vertical Components of Peak Ground Acceleration and Acceleration Response Spectra

2004 ◽  
Vol 94 (6) ◽  
pp. 2417-2417 ◽  
Author(s):  
K. W. Campbell
Keyword(s):  
Ground Motion ◽  
Peak Ground Acceleration ◽  
Response Spectra ◽  
Acceleration Response ◽  
Ground Acceleration ◽  
Attenuation Relations ◽  
Ground Motion Attenuation ◽  
Acceleration Response Spectra

scholarly journals Dynamical similarity of multi-block catenary arches and rocking blocks subjected to horizontal base excitation

2021 ◽  
Author(s):  
Tamás Ther ◽  
László P. Kollár
Keyword(s):  
Dynamic Response ◽  
Peak Ground Acceleration ◽  
Response Spectra ◽  
Frequency Parameter ◽  
Base Excitation ◽  
Acceleration Response ◽  
Ground Acceleration ◽  
Acceleration Response Spectra ◽  
Basic Hypothesis ◽  
Two Parameters

AbstractIn this paper, the dynamical similarity of multi-block catenary arches and columns is discussed, which can be used for the simplified design of rocking arches. The basic hypothesis is that the dynamic response of multi-block arches and columns is similar when the shape of the arch follows the thrust line, i.e. it is a catenary arch. It is validated numerically that the responses of slender catenary arches are safe and reliable approximations of those of not slender arches and then that the overturning acceleration (response) spectra of rigid, slender monolithic blocks can be directly applied for catenary arches. The similarity is based on two parameters, on the limit peak ground acceleration (under which the structure will not move at all) and on the frequency parameter (defined by Housner for rigid blocks).

Seismic Hazard Analysis for an NPP Site

2004 ◽  
Author(s):  
A. K. Ghosh ◽  
H. S. Kushwaha
Keyword(s):  
Seismic Hazard ◽  
Ground Motion ◽  
Peak Ground Acceleration ◽  
Hazard Analysis ◽  
Structural Response ◽  
Response Spectra ◽  
Seismic Fragility ◽  
Material Strength ◽  
Ground Acceleration ◽  
Hazard Response

The various uncertainties and randomness associated with the occurrence of earthquakes and the consequences of their effects on the NPP components and structures call for a probabilistic seismic risk assessment (PSRA). However, traditionally, the seismic design basis ground motion has been specified by normalised response spectral shapes and peak ground acceleration (PGA). The mean recurrence interval (MRI) used to be computed for PGA only. The present work develops uniform hazard response spectra i.e. spectra having the same MRI at all frequencies for Kakrapar Atomic Power Station site. Sensitivity of the results to the changes in various parameters has also been presented. These results determine the seismic hazard at the given site and the associated uncertainties. The paper also presents some results of the seismic fragility for an existing containment structure. The various parameters that could affect the seismic structural response include material strength of concrete, structural damping available within the structure and the normalized ground motion response spectral shape. Based on this limited case study the seismic fragility of the structure is developed. The results are presented as families of conditional probability curves plotted against the peak ground acceleration (PGA). The procedure adopted incorporates the various randomness and uncertainty associated with the parameters under consideration.

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