2021-01-012024-05-18https://scholars.lib.ntu.edu.tw/handle/123456789/699368"一般含細粒料的砂土之動態實驗多是以飽和或完全乾之試體作測驗，另文獻上通用之動態曲線(如模數與應變之關係)、液化參數之關聯模型等都是建立在飽和土壤之架構上。隨著非飽和土壤理論之發展，非飽和土壤之動態行為亦受到關注。 本研究利用靜三軸與動三軸實驗儀，探討非飽和含細粒料砂土之靜態(如排水剪力強度、穩態曲線)與動態(如衰減模數、液化潛勢)行為。實驗中亦會觀查細粒料含量、空隙率、飽和度、圍壓對非飽和土壤行為之影響。另外，透過流泵實驗找出含細粒料的砂土之土水特徵曲線。最後，通過統計分析，建立穩態參數與液化潛勢參數之關聯預測模型。" " Dynamic properties are often determined for sand with fines at completely saturated or dry condition. Available generic dynamic curves, correlation relationships for dynamic parameters and liquefaction behavior are mostly applicable for saturated soils. With the development of the theory for unsaturated soil mechanics in recent years, attention has been paid to the dynamic behavior of unsaturated soil. The objective of this proposed research is to perform extensive laboratory study to determine the static monotonic (e.g. drained shear strength, steady state line) and the dynamic (e.g. degraded modulus, liquefaction potential etc.) engineering properties of unsaturated sands with fines. In addition, statistical models for correlating the steady state parameters and the liquefaction parameters will be developed. In this study, static triaxial tests, cyclic triaxial tests and flow pump tests will be performed. Fines content, void ratio, degree of saturation, and confining pressure of the unsaturated soil specimen will be systematically varied. It is hoped that the laboratory results and statistical models developed in this research can aid engineers in estimating the liquefaction potential of the unsaturated sand with fines. "非飽和土壤含細粒料砂土液化動三軸實驗流泵Unsaturated soilsands with finesliquefactiondynamics triaxial testflow pump