지반-기초-구조물 상호작용을 고려한 말뚝 기초 구조물에서의 지진 하중 평가Evaluation of Seismic Loading of Pile Foundation Structure Considering Soil-foundation-structure Interaction
- Other Titles
- Evaluation of Seismic Loading of Pile Foundation Structure Considering Soil-foundation-structure Interaction
- Authors
- 유민택; 하정곤; 조성배; 김동수
- Issue Date
- May-2014
- Publisher
- 한국지진공학회
- Keywords
- Seismic load; Soil-structure interaction(SSI); Centrifuge test; Group pile foundation
- Citation
- 한국지진공학회논문집, v.18, no.3, pp.125 - 132
- Journal Title
- 한국지진공학회논문집
- Volume
- 18
- Number
- 3
- Start Page
- 125
- End Page
- 132
- URI
- https://scholarworks.bwise.kr/gachon/handle/2020.sw.gachon/87637
- ISSN
- 1226-525X
- Abstract
- In this study, a series of dynamic centrifuge tests were performed for a soil-foundation-structural interaction system in dry sand withvarious embedded depths and superstructure conditions. Sinusoidal wave, sweep wave and real earthquake were used as input motionwith various input acceleration and frequencies. Based on the results, a natural period and an earthquake load for soil-structureinteraction system were evaluated by comparing the free-field and foundation accelerations . The natural period of free field is longerthan that of the soil-foundation-structure system. In addition, it is confirmed that the earthquake load for soil-foundation-structuresystem is smaller than that of free-field in short period region. In contrast, the earthquake load for soil-foundation-structure interactionsystem is larger than that of free-field in long period region. Therefore, the current seismic design method, applying seismic loading offree-field to foundation, could overly underestimate seismic load and cause unsafe design for long period structures, such as high-risebuildings.
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Collections - 공과대학 > 토목환경공학과 > 1. Journal Articles
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