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- W1553219620 abstract "비탄성 지진해석은 구조물-지반 체계의 비선형 거동 때문에 내진설계를 위해 필요하고, 합리적인 내진설계를 위해서 지반-구조물 상호작용을 고려한 성능에 기준한 설계의 중요성도 인식되고 있다. 이 연구에서는 11개 중약진과 5개 강진 기록을 최대 가속도 0.075g, 0.15g, 0.2g와 0.3g로 조정하여 연약지반에 세워진 단자유도계에 대한 탄성과 비탄성 지진응답해석을 지반의 비선형성을 고려하여 수행하였다. 의사3차원 동적해석 프로그램을 사용하여 주파수 영역에서 지진하중을 암반에 작용시켜 구조물-지반 체계에 대한 지진응답해석을 한번에 수행하였다. 연구결과에 의하면 비선형 지반-구조물 상호작용 영향을 고려하는 것과 설계기준에 따라 내진설계를 하는 것보다는 여러 가지 지반조건을 고려하여 성능에 기준한 내진설계를 수행하는 것이 필요하다. 또한 약진에 의한 연약지반의 비선형성이 비선형 지반에 의한 지진파의 증폭 때문에 탄성과 비탄성 지진응답에 심하게 영향을 미쳤는데 특히 탄성지진응답에서 두드러졌다. Inelastic seismic analysis is necessary for the seismic design due to the nonlinear behavior of a structure-soil system, and the importance of the performance based design considering the soil-structure interaction is recognized for the reasonable seismic design. In this study, elastic and inelastic seismic response analyses of a single degree of freedom system on the soft soil layer were peformed considering the nonlinearity of the soil for the 11 weak or moderate, and 5 strong earthquakes scaled to the nominal peak acceleration of 0.075g, 0.15g, 0.2g and 0.3g. Seismic response analyses for the structure-soil system were peformed in one step applying the earthquake motions to the bedrock In the frequency domain, using a pseudo 3-D dynamic analysis software. Study results indicate that it is necessary to consider the nonlinear soil-structure interaction effects and to perform the performance based seismic design for the various soil layers rather than to follow the routine procedures specified in the seismic design codes. Nonlinearity of the soft soil excited with the weak earthquakes also affected significantly to the elastic and inelastic responses due to the nonlinear soil amplification of the earthquake motions, and it was pronounced especially for the elastic ones." @default.
- W1553219620 created "2016-06-24" @default.
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- W1553219620 date "2005-08-01" @default.
- W1553219620 modified "2023-10-18" @default.
- W1553219620 title "Effect of the Nonlinearity of the Soft Soil on the Elastic and Inelastic Seismic Response Spectra" @default.
- W1553219620 doi "https://doi.org/10.5000/eesk.2005.9.4.011" @default.
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