本研究是一個三年期動態離心機模型試驗計畫，其目標在以試驗方法詳盡研究液化地盤淺基礎建築物受震沈陷變形行為。第一年計畫規劃進行12 組試驗，探討不同樓層數建築物在不同相對密度地盤之基腳液化沈陷關係。第二年規劃進行11 組試驗，探討不同基腳尺寸與基礎型式對建築物液化沈陷量之影響。第三年規劃進行12 組試驗，探討具地下室一層建築物之上浮行為並以實際地震紀錄作為基盤輸入運動，研究不規則地震波形與簡諧正弦波形之差異，對建築物液化沈陷量之影響。這三年期間，將對試驗之砂土地盤進行詳細之物理指數性質試驗、靜態力學試驗、動態性質試驗以及動態強度試驗。利用這些室內試驗資料，建立完整之數值分析模型，進行數值試驗模擬液化地盤淺基礎建築物受震沈陷變形行為。最後綜合離心機模型試驗結果與數值模擬結果，歸納出液化地盤淺基礎建築物受震沈陷之建議評估法，供工程界參考應用。 This research is a three-year project for studying post-earthquake settlement and deformation behavior of buildings with shallow foundations in liquefiable ground using dynamic centrifuge tests. In the first year, twelve tests are planning to investigate the relations of foundation settlement with story number of building and relative density of model ground. In the second year, eleven tests are planning to survey the influences of footing size and foundation type on post-earthquake settlement of building. In the third year, twelve tests will be scheduled to understand the floating behavior of one-story building with one-story basement and to find the differences of building settlement behavior between real earthquake wave and harmonic sine wave. During the three years, detailed laboratory tests including physical property tests, mechanical tests, permeability tests, dynamic property test and dynamic strength tests will be carried out on the sand specimens, which are used to prepare the model ground in the centrifuge container. Then, these test data will be used to establish the numerical model through commercial numerical program. Numerical tests will be performed to simulate post-earthquake settlement and deformation behavior of buildings with shallow foundations in liquefiable ground. At last, the results of centrifuge tests and numerical simulation will be integrated to deduce a simplified assessment method for predicting post-earthquake settlements of buildings with shallow foundations due to soil liquefaction. 研究期間：9908 ~ 10007
