Table 2 Classical creep models and calculation formulas.
From: Creep behavior of clayey soil and its model prediction in the Cangzhou land subsidence area
Number | Model name | Creep equation | Model structure |
|---|---|---|---|
1 | Kelvin model | \(\varepsilon = \frac{\sigma }{EH}\left( {1 - e^{{ - \left( {\frac{{E_{H} }}{\eta }} \right)t}} } \right)\) |
|
2 | Maxwell model | \(\varepsilon = \sigma \left( {{t \mathord{\left/ {\vphantom {t \eta }} \right. \kern-0pt} \eta } + {1 \mathord{\left/ {\vphantom {1 {E_{H} }}} \right. \kern-0pt} {E_{H} }}} \right)\) |
|
3 | Merchant model | \(\varepsilon = \frac{\sigma }{EH} + \frac{\sigma }{EK}\left( {1 - e^{{ - \left( {\frac{EK}{\eta }} \right)t}} } \right)\) |
|
4 | Burgers model | \(\varepsilon = \sigma \left[ {\frac{1}{EH} + \frac{t}{{\eta_{1} }} + \frac{1}{EK}\left( {1 - e^{{ - \left( {\frac{EK}{\eta }} \right)t}} } \right)} \right]\) |
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