Evaluation of Flow Liquefaction and Liquefied Strength Using the Cone Penetration Test
Evaluation of Flow Liquefaction and Liquefied Strength Using the Cone Penetration Test
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DOI：
10.1061/(asce)gt.1943-5606.0000286
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发表时间：
2010-06-01
影响因子：
3.9
通讯作者：
Robertson, P. K.
中科院分区：
文献类型：
--
作者：
Robertson, P. K.
流动液化是大型土壤结构（例如尾矿库和土坝）的主要设计问题。如果土壤在不排水剪切下应变软化，因此容易发生流动液化，则需要估计所产生的液化剪切强度以进行稳定性分析。已经发布了许多用于估计无粘性土壤的残余或液化剪切强度的程序。本文提出了基于锥入度试验的关系，以评估各种土壤对强度损失和液化剪切强度的敏感性。许多调查人员对病例历史分析进行了审查，并与一些其他病例历史一起使用。病例史数据之外的推断以实验室研究和理论为指导。
Flow liquefaction is a major design issue for large soil structures such as mine tailings impoundments and earth dams. If a soil is strain softening in undrained shear and, hence, susceptible to flow liquefaction, an estimate of the resulting liquefied shear strength is required for stability analyses. Many procedures have been published for estimating the residual or liquefied shear strength of cohesionless soils. This paper presents cone penetration test-based relationships to evaluate the susceptibility to strength loss and liquefied shear strength for a wide range of soils. Case-history analyses by a number of investigators are reviewed and used with some additional case histories. Extrapolations beyond the case-history data are guided by laboratory studies and theory.