In practice, post-liquefaction strength is largely determined from case histories, but the case history database is limited and there are gaps in the information available in each case. As a result, laboratory tests have continued to play a key role in determining how various factors influence post-liquefaction strength. This paper presents an investigation into how factors such as particle size, particle size distribution, fines content, and compressibility influence post-liquefaction strength in simple shear tests. Eleven particle size distributions of a natural soil and a tailings material, ranging from silt to fine gravel, were studied. The results were compared with case histories.

Materials of different geologic origins have meaningfully different post-liquefaction strengths. Particle size and particle size distributions were both found to significantly affect post-liquefaction response as well. Post-liquefaction strengths obtained from simple shear tests agreed well with those back calculated from case histories. Laboratory testing can be utilized to determine how the post-liquefaction strength of a given material may compare to the case history database, and can be used to guide design decisions. This is an important practical finding, given the sparse case history database.

在实践中，液化后强度很大程度上取决于案例历史，但案例历史数据库有限，并且每种情况下可用的信息都存在差距。因此，实验室测试在确定各种因素如何影响液化后强度方面继续发挥着关键作用。本文研究了颗粒尺寸、颗粒尺寸分布、细粉含量和可压缩性等因素如何影响简单剪切试验中的液化后强度。研究了天然土壤和尾矿材料（从淤泥到细砾石）的十一种粒度分布。结果与病史进行了比较。

不同地质来源的材料具有明显不同的液化后强度。发现颗粒尺寸和颗粒尺寸分布也显着影响液化后响应。从简单剪切试验中获得的液化后强度与根据案例计算得出的液化后强度非常一致。实验室测试可用于确定给定材料的液化后强度与案例历史数据库的比较，并可用于指导设计决策。鉴于病例历史数据库稀疏，这是一个重要的实际发现。