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首页> 美国政府科技报告 >Constitutive Model for Overconsolidated Clays. Part 1. Model Formulation. Part 2.Model Evaluation
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Constitutive Model for Overconsolidated Clays. Part 1. Model Formulation. Part 2.Model Evaluation

机译：超固结黏土本构模型。第1部分。模型制定。第2部分。模型评估

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The report presents a new constitutive model, MIT-E3, which was developed todescribe the mechanical behavior of overconsolidated clays and clays under cyclic loading. The report is divided into two parts: (a) model formulation, and (b) evaluation. MIT-E3 is a generalized effective stress model for describing the rate independent behavior of normally to moderately overconsolidated clay (with OCR's less than 8) which exhibit normalized behavior. The model formulation comprises three components: an elasto-plastic model for normally consolidated clay including anisotropic and strain softening behavior; equations to describe the small strain nonlinearity and hysteretic response in unloading and reloading; and bounding surface plasticity for irrecoverable, anisotropic and path dependent behavior of overconsolidated clays. Model complexity is controlled through the use of input parameters which can be obtained from a small number of standard soil tests. A complete procedure is described to select the input parameters for a given clay.

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