Implementation of DSC model and application for analysis of field pile tests under cyclic loading
✍ Scribed by Shao, Changming; Desai, Chandra S.
- Publisher
- John Wiley and Sons
- Year
- 2000
- Tongue
- English
- Weight
- 256 KB
- Volume
- 24
- Category
- Article
- ISSN
- 0363-9061
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✦ Synopsis
The disturbed state concept (DSC) model, and a new and simpli"ed procedure for unloading and reloading behavior are implemented in a nonlinear "nite element procedure for dynamic analysis for coupled response of saturated porous materials. The DSC model is used to characterize the cyclic behavior of saturated clays and clay}steel interfaces. In the DSC, the relative intact (RI) behavior is characterized by using the hierarchical single surface (HISS) plasticity model; and the fully adjusted (FA) behavior is modeled by using the critical state concept. The DSC model is validated with respect to laboratory triaxial tests for clay and shear tests for clay-steel interfaces. The computer procedure is used to predict "eld behavior of an instrumented pile subjected to cyclic loading. The predictions provide very good correlation with the "eld data. They also yield improved results compared to those from a HISS model with anisotropic hardening, partly because the DSC model allows for degradation or softening and interface response.