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| Study of Interaction on Earthquake Response of Adjacent Buildings Founded at Different Depths |
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| Study of Interaction on Earthquake Response of Adjacent Buildings Founded at Different Depths |
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Dong Woo Kim, Sung Chil Kim, Young Huh, Yong Min Kim |
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| Abstract |
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The aim of this paper is to study the interaction between adjacent buildings with different foundation levels under earthquake loading conditions. Buildings and soil are represented by two different models. In the first case the building itself is modeled with standard frame element, whereas the soil behavior is stimulated by a special grid model. In the second case, the building and soil are represented by plane stress or plane strain elements. The modulus of elasticity of the ground is varied. Just like the modification of the modulus of elasticity the varying relations of inertia have a strong influence on the section forces within the buildings. The analysis is carried out using numerical program which has been developed based on the axisymmetric fein element method in corporation of grob element for soil region and wave input technique transit boundary condition. Interaction of the proposed method is demonstrated in numerical examples. |
| Key Words:
Soil-structure interaction; Grid model; Wave input technique; Earthquake response |
| 요지 |
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본 연구에서는 기초 지반고가 서로 상이한 근접구조물들의 상호작용에 대한 지진응답을 해석하였다. 구조물과 지반은 각기 두 가지 모델에 대하여 연구하였다. 즉 첫째 모델의 경우에는 빌딩은 프레임 모델로 지반은 그리드 모델로 설정하였고, 둘째 모델의 경우에는 구조물과 지반을 평면응력과 평면변형률로 모델화하였으며 구조물에 대한 상대적인 관성모멘트는 지반의 탄성모듈과 함께 구조물의 단면력에 영향을 미치므로 함께 고려되었다. 근사해석으로는 유한요소기법을 사용하였고 지진파입력기법과 Transit조건 등을 적용하여 제시된 예들을 통하여 상호작용 안전성을 논증하였다. |
| 핵심용어:
지반-구조물 상호작용; 그리드모델; 파동입력기술; 지진응답 |
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