목표스펙트럼의 평균과 분산을 고려하기 위한 시뮬레이션 기반의 효율적인 지반운동기록 선정 알고리즘

다국어 초록 (Multilingual Abstract)

Linear and nonlinear dynamic analyses become popular in seismic design and seismic performance evaluation procedures. The accuracy of the results of such analyses depends not only on accurate analytic model of structures but also a proper selection of input ground motions. The purpose of this study is to develop a computationally efficient and accurate algorithm for selecting ground motions considering the mean and variance of target response spectrum. The proposed algorithm adopts a simulation based process for generating a desired number (=ng) of simulated response spectra using the Monte Carlo Simulation with information of the mean, variance, and correlation structure of target response spectrum. The accuracy of selecting ground motions using the proposed algorithm is improved by generating multiple (=100) sets of simulated response spectra. Ten sets are chosen from the 100 sets, which best match the mean and standard deviation of a target response spectrum. Ground motions are then selected for each of the top ten sets. The set of ground motions having the mean and standard deviation of their response spectra that best match the target response spectrum is the one to be selected. To verify the accuracy and efficiency of the algorithm, numerical examples are provided.

목차 (Table of Contents)

• Abstract
• 1. 서론
• 2. 목표스펙트럼에 근사한 하나의 지반운동 선정
• 3. 배율 조정 시 반복계산이 필요 없는 하나의 지반운동 선정 방법
• 4. 목표스펙트럼에 근사한 여러 개의 지반운동 선정
• 5. 결론
• 참고문헌

참고문헌 (Reference)

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7 Boore, D. M., "Equations for estimating horizontal response spectra and peak acceleration from western North America earthquakes : A summary of recent work" 68 : 128-153, 1997

8 Abrahamson, N. A., "Empirical response spectral attenuation relations for shallow crustal earthquakes" 68 (68): 94-126, 1997

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10 Baker, J. W., "Correlation of response spectral values for multicomponent ground motion" 96 (96): 215-227, 2006

11 Baker, J. W., "A vector-valued ground motion intensity measure consisting of spectral acceleration and epsilon" 34 : 1193-1217, 2005

12 Kottke, A. R., "A semi-automated procedure for selecting and scaling recorded earthquake motions for dynamic analysis" 24 : 911-932, 2008

13 Jayaram, N., "A computationally efficient ground-motion selection algorithm for matching a target response spectrum mean and variance" Earthquake Spectra, (in press) 2011