1. Long-term deformation and damage analysis of marine clay around seawalls under coupled dynamic-seepage loading.
- Author
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Lei, Huayang, Qi, Ziyang, and Feng, Shuangxi
- Subjects
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SEA-walls , *CLAY , *CYCLIC loads , *DEFORMATIONS (Mechanics) , *DYNAMIC loads - Abstract
The long-term deformation characteristics and damage degree of soft marine-deposited clay must be evaluated to safely design seawalls. According to abundant field evidence, soft marine-deposited clay tends to experience coupled dynamic loading and seepage loading. Determining the critical load and damage index for these complex loading conditions is imperative. With Tianjin marine-deposited clay as an example, we employed an improved cyclic triaxial instrument to analyse the cumulative plastic strain, water discharge and stress–strain relationship of the clay to understand its long-term deformation development. Based on shakedown theory, the critical cyclic stress ratio (CSR) was determined. A multi-factor damage variable method was proposed to evaluate the damage degree. Its comparison with a traditional mono-factor damage variable method illustrated that this method is effective for damage analyses of marine clay around seawalls under coupled dynamic-seepage loading. [ABSTRACT FROM AUTHOR]
- Published
- 2023
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