scholarly journals Seismic design technology for breeder reactor structures. Volume 1. Special topics in earthquake ground motion

1983 ◽  
Author(s):  
D.P. Reddy
Keyword(s):  
Ground Motion ◽  
Seismic Design ◽  
Earthquake Ground Motion ◽  
Design Technology

Influence of P – Delta effects on seismic design

1981 ◽  
Vol 8 (1) ◽  
pp. 31-43 ◽  
Author(s):  
C. James Montgomery
Keyword(s):  
Ground Motion ◽  
Seismic Design ◽  
Time History ◽  
Building Design ◽  
Earthquake Ground Motion ◽  
Stability Factor ◽  
The Stability

The influence of P – Delta effects on the response of buildings subjected to earthquake ground motion is illustrated using time – history studies. It is shown that the influence of P – Delta effects is of great importance for buildings responding in a highly inelastic manner. However, for buildings responding in an elastic or slightly inelastic manner, the influence of P – Delta effects is relatively small. The stability factor approach for estimating the influence of P – Delta effects is reviewed. It appears that this approach gives reasonable results only for systems responding in an elastic or slightly inelastic manner. The strength and drift characteristics of buildings are briefly described. The results presented suggest that the response of certain types of well-designed buildings will not be significantly influenced by P – Delta effects. Finally, recommendations are made for assessing the significance of P – Delta effects for a given building design.

Implications of the 1988 Saguenay earthquake on Canadian seismic strength specification

1991 ◽  
Vol 18 (1) ◽  
pp. 130-139 ◽  
Author(s):  
W. K. Tso ◽  
T. J. Zhu
Keyword(s):  
Ground Motion ◽  
Seismic Design ◽  
Analytical Study ◽  
Earthquake Ground Motion ◽  
Base Shear ◽  
Design Strength ◽  
Observed Damage ◽  
Ground Motion Records ◽  
Epicentral Region ◽  
Strong Ground

The November 25, 1988, Saguenay earthquake was the most significant seismic event in eastern North America over the last 50 years. Based on strong ground motion records from this earthquake, an analytical study was undertaken to evaluate the seismic design base shear provisions of the National Building Code of Canada for buildings located in the eastern regions of Canada. In light of the observed damage to masonry structures in the epicentral region, emphasis was placed on the evaluation of the codified minimum seismic strength for masonry structural systems. Key words: earthquake, ground motion, seismic design strength, code, masonry, buildings, damage, ductility.

Parameters influencing the design of friction damped structures

1989 ◽  
Vol 16 (5) ◽  
pp. 753-766 ◽  
Author(s):  
A. Filiatrault ◽  
S. Cherry
Keyword(s):  
Ground Motion ◽  
Seismic Design ◽  
Load Distribution ◽  
Simple Procedure ◽  
Structural Response ◽  
Earthquake Ground Motion ◽  
Construction Site ◽  
Efficient Design ◽  
Load Spectrum ◽  
Brake Lining

This paper is concerned with a study of the parameters influencing the seismic design of structures fitted with friction dampers. For the efficient design of such systems, the slip load distribution which minimizes structural response during a major earthquake must be determined for the dampers; this distribution is referred to herein as the optimum slip load distribution. A simple procedure is presented for establishing this basic design parameter. An analogy is first made between a single-storey friction damped structure and a simple nonlinear mechanical system. The response of this system to sinusoidal base excitation is then computed using an existing analytical solution. The solution clearly shows that the optimum slip load of the analogous friction damped structure depends on the amplitude and frequency of the ground motion and is not strictly a structural property. By extension, the optimum slip load distribution of a multistorey friction damped structure will be influenced by the characteristics of the earthquake ground motion anticipated at the construction site. Using this information, numerical sensitivity and parametric studies are performed on multistorey friction damped structures excited by a large number of artificial accelerograms generated from an existing stochastic earthquake model. The results of the study lead to the construction of a design slip load spectrum for the rapid evaluation of the optimum slip load distribution in a multistorey friction damped structure. The spectrum takes into account the properties of the structure and of the ground motion anticipated at the construction site and greatly simplifies the seismic design of this new structural system. Key words: braced frames, brake lining, design, damping, dynamics, earthquakes, energy, friction, slip load spectrum.

Development of Maximum Considered Earthquake Ground Motion Maps

2000 ◽  
Vol 16 (1) ◽  
pp. 21-40 ◽  
Author(s):  
Edgar V. Leyendecker ◽  
R. Joe Hunt ◽  
Arthur D. Frankel ◽  
Kenneth S. Rukstales
Keyword(s):  
Ground Motion ◽  
Seismic Design ◽  
Spectral Response ◽  
Design Procedure ◽  
Peak Ground Velocity ◽  
Earthquake Ground Motion ◽  
Ground Acceleration ◽  
Seismic Safety ◽  
Design Procedures ◽  
Seismic Rehabilitation

The 1997 NEHRP Recommended Provisions for Seismic Regulations for New Buildings use a design procedure that is based on spectral response acceleration rather than the traditional peak ground acceleration, peak ground velocity, or zone factors. The spectral response accelerations are obtained from maps prepared following the recommendations of the Building Seismic Safety Council's (BSSC) Seismic Design Procedures Group (SDPG). The SDPG-recommended maps, the Maximum Considered Earthquake (MCE) Ground Motion Maps, are based on the U.S. Geological Survey (USGS) probabilistic hazard maps with additional modifications incorporating deterministic ground motions in selected areas and the application of engineering judgement. The MCE ground motion maps included with the 1997 NEHRP Provisions also serve as the basis for the ground motion maps used in the seismic design portions of the 2000 International Building Code and the 2000 International Residential Code. Additionally the design maps prepared for the 1997 NEHRP Provisions, combined with selected USGS probabilistic maps, are used with the 1997 NEHRP Guidelines for the Seismic Rehabilitation of Buildings.

scholarly journals Seismic and Structural Analyses of the Eastern Anatolian Region (Turkey) Using Different Probabilities of Exceedance

2021 ◽  
Vol 4 (4) ◽  
pp. 89
Author(s):  
Ercan Işık ◽  
Ehsan Harirchian ◽  
Aydın Büyüksaraç ◽  
Yunus Levent Ekinci
Keyword(s):  
Seismic Hazard ◽  
Ground Motion ◽  
Seismic Design ◽  
Seismic Moment ◽  
Peak Ground Acceleration ◽  
Earthquake Ground Motion ◽  
Earthquake Risk ◽  
Ground Acceleration ◽  
Earthquake Parameters ◽  
Seismic Design Code

Seismic hazard analysis of the earthquake-prone Eastern Anatolian Region (Turkey) has become more important due to its growing strategic importance as a global energy corridor. Most of the cities in that region have experienced the loss of life and property due to significant earthquakes. Thus, in this study, we attempted to estimate the seismic hazard in that region. Seismic moment variations were obtained using different types of earthquake magnitudes such as Mw, Ms, and Mb. The earthquake parameters were also determined for all provincial centers using the earthquake ground motion levels with some probabilities of exceedance. The spectral acceleration coefficients were compared based on the current and previous seismic design codes of the country. Additionally, structural analyses were performed using different earthquake ground motion levels for the Bingöl province, which has the highest peak ground acceleration values for a sample reinforced concrete building. The highest seismic moment variations were found between the Van and Hakkari provinces. The findings also showed that the peak ground acceleration values varied between 0.2–0.7 g for earthquakes, with a repetition period of 475 years. A comparison of the probabilistic seismic hazard curves of the Bingöl province with the well-known attenuation relationships showed that the current seismic design code indicates a higher earthquake risk than most of the others.

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