本研究藉由台灣中部921地震液化災區實地再勘查、測量與訪談後，彙整勘查結果，並與2001年調查記錄進行比較，獲致各區建物與不同基礎形式，歷經20多年之整修後觀察傾斜變化。研究中並蒐集國內外有關土壤液化災害之調查、整治對策與相關研究成果、治理措施等，加以彙整。綜合現勘調查與文獻資料後，建立小型振動台砂箱模擬液化試驗，藉由各種不同基礎型式與深度之建物模型，在模擬砂箱中試驗觀察比較其土壤液化時，基礎與建物模型抵抗震動引致土壤液化之效能差異，並與現地勘查結果及參考文獻資料彙整討論。最後提出基礎抗液化效能之比較，並初步建議建築物抵抗土壤液化時，維持穩定設計之建物安全高寬深比值，建議設計安全目標區，以高寬深比在15以下，對於地震土壤液化時建物之穩定性較為安全。可供後續研究時，綜合更多試驗與數值分析加以確認，並提供既有建物與新設建物規劃、設計、施工與法規的檢討。

This study conducted on-site re-explorations, measurements and interviews in the 921 earthquake liquefaction disaster area in central Taiwan, compiled the survey results, and compared them with the 2001 survey records to obtain the renovation and tilt changes of the buildings and different foundation forms in each area after more than 20 years. During the study, we also collected and compiled domestic and foreign investigations, remediation countermeasures, related research results, and control measures related to soil liquefaction disasters. After comprehensive investigation and literature data, we established a small shaking table sand box simulated liquefaction test. Through various building models with different foundation types and depths, the test was conducted in the simulated sand box to observe and compare the foundation and soil liquefaction test. The differences in the performance of building models in resisting soil liquefaction caused by earthquake are summarized and discussed with on-site survey results and reference materials. Finally, the results of the anti-liquefaction performance of the foundation are presented, and it is initially suggested that when the building resists soil liquefaction, the safe height-width-depth ratio of the building should be maintained in a stable design, it is recommended to design a safe target area with a height-width-depth ratio below 15, which is safer for the stability of buildings during earthquake soil liquefaction. Which can be used for further follow-up research to consolidate more tests and numerical analysis for confirmation, and provide existing buildings with it provides reference and suggestions for the planning, design, construction and legal review of new buildings.