scholarly journals DESIGN EARTHQUAKE GROUND MOTIONS FROM PROBABILISTIC RESPONSE SPECTRA: CASE STUDY OF NEPAL

2008 ◽  
Vol 8 (4) ◽  
pp. 16-28 ◽  
Author(s):  
Hari PARAJULI ◽  
Junji KIYONO ◽  
Yusuke ONO ◽  
Takahiro TSUTSUMIUCHI
Keyword(s):  
Ground Motions ◽  
Response Spectra ◽  
Earthquake Ground Motions ◽  
Probabilistic Response ◽  
Design Earthquake

scholarly journals Variation of Earthquake Ground Motions with Focus on Site Amplification Factors: A Case Study

2019 ◽  
Vol 9 (4) ◽  
pp. 4355-4360 ◽  
Author(s):  
Y. Fukushima ◽  
T. Nagao
Keyword(s):  
Hazard Analysis ◽  
Probability Distributions ◽  
Ground Motions ◽  
Strong Motion ◽  
Site Amplification ◽  
Group Delay Time ◽  
Amplification Factors ◽  
Earthquake Ground Motions ◽  
Design Earthquake

In this paper, an evaluation of the variation of earthquake ground motions with a focus on site amplification factors based on spectral analysis is presented. By using strong motion record obtained at six sites in Japan, probability distributions of site amplification factors were shown. The relations between standard deviations of site amplification factors and distances between the sites were studied. The variations of representative values of earthquake ground motions based on the variations of site amplification factors were discussed by using probabilistic seismic hazard analysis with focus on Fourier amplitude and group delay time. The distributions of peak ground accelerations and peak ground velocities were shown. It is suggested that design earthquake ground motions considering the average site amplification factors may lead the engineering design on the dangerous side.

DAMAGE EVOLUTION SPECTRA FOR SEISMIC ANALYSIS OF HIGH-RISE BUILDINGS

2012 ◽  
Vol 06 (03) ◽  
pp. 1250021
Author(s):  
Y. B. HO ◽  
J. S. KUANG
Keyword(s):  
Damage Evolution ◽  
Seismic Analysis ◽  
Ground Motions ◽  
Time History ◽  
Tall Buildings ◽  
Response Spectra ◽  
Seismic Damage ◽  
Analysis And Design ◽  
High Rise ◽  
Earthquake Ground Motions

Seismic response spectra are amongst one of the most important tools for characterizing earthquake ground motions. In design practice, the response spectra are presented without including any load history, hence the nonlinear analysis of structures based solely on conventional earthquake response spectra is theoretically unsound, particularly for long-period or vertically irregular high-rise buildings. In this paper, a concept of seismic damage evolution is introduced and the method of analysis for characterizing the process of seismic damage to structures under earthquakes is presented. Seismic damage evolution spectra for analysis and design of high-rise buildings are then developed as an effective means of describing and simplifying earthquake ground motions. These spectra are shown to be very useful in selecting the ground motion-time history and, particularly, validating the equivalent static-load analysis and design of high-rise buildings under near-fault pulse-like ground motions. Case studies of the seismic inelastic performance of two vertically irregular, tall buildings are presented considering the seismic damage evolution spectra.

Selection of the Test Specimens for Seismic Tests of Air-Operated Valve Actuators for Nuclear Power Plants

2019 ◽  
Author(s):  
Nobuo Kojima ◽  
Yoshitaka Tsutsumi ◽  
Yoshinao Matsubara ◽  
Koji Nishino ◽  
Yasuyuki Ito ◽  
...  
Keyword(s):  
Nuclear Power ◽  
Power Plants ◽  
Nuclear Power Plants ◽  
Ground Motions ◽  
Test Results ◽  
Earthquake Ground Motions ◽  
Dynamic Function ◽  
Design Earthquake ◽  
Seismic Tests ◽  
Selection Of

Abstract The soundness for the function of air-operated valves in nuclear power plants during earthquake has been investigated via seismic test results and so forth. Since the seismic response acceleration has increased more and more with a recent reassessment of design earthquake ground motions conducted according to the revised Japanese nuclear safety regulation, it is necessary to evaluate the soundness for the function of various valves subject to large acceleration beyond design basis. The air-operated valves currently installed in the nuclear power plants in Japan play the important roles in the sever accident events. In this study, we classified them based on the valve type, manufactures and the previous test results. Furthermore, we proposed the strategy for evaluating the seismic-proof and the seismic test condition for examining the soundness of the dynamic function. Here, the dynamic function is defined as the function required under and after earthquakes.

Design earthquake ground motions for Kathmandu

2009 ◽  
Vol 2 (3) ◽  
pp. 215-219
Author(s):  
Hari Parajuli ◽  
Junji Kiyono ◽  
Yusuke Ono
Keyword(s):  
Ground Motions ◽  
Earthquake Ground Motions ◽  
Design Earthquake

Microzoning the Likelihood of Strong Spectral Amplification of Earthquake Motions Using MMI Surveys and Surface Geology

1992 ◽  
Vol 8 (4) ◽  
pp. 501-527
Author(s):  
Thomas Bodle
Keyword(s):  
Spectral Analysis ◽  
Research Method ◽  
Low Cost ◽  
Ground Motions ◽  
Spectral Response ◽  
Theoretical Justification ◽  
Earthquake Ground Motions ◽  
Response Method ◽  
Surface Geology

A statistically based microzonation tool for delineating zones within a region most susceptible to strong spectral amplification of earthquake accelerations in the 2 to 4 Hertz range is introduced using detailed Modified Mercalli Intensity (MMI) surveys and surface geology. A rationale for the research method is discussed using four arguments: the Fourier spectral analysis of earthquake ground motions and the spectral response method; an empirical versus a theoretical justification, low cost, and a consideration for previous research into the topic specific to the area of the case study chosen.

scholarly journals DESIGN EARTHQUAKE GROUND MOTIONS FOR THE SCENARIO EARTHQUAKES AT TOKYO BAY AREA

2017 ◽  
Vol 23 (53) ◽  
pp. 53-58
Author(s):  
Kenichi KATO ◽  
Yoshiaki HISADA ◽  
Hiroshi ISHIDA ◽  
Tetsushi WATANABE ◽  
Fumino SUZUKI ◽  
...  
Keyword(s):  
Ground Motions ◽  
Tokyo Bay ◽  
Earthquake Ground Motions ◽  
Bay Area ◽  
Scenario Earthquakes ◽  
Design Earthquake
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