دورية أكاديمية
Seismic site response of layered saturated sand: comparison of finite element simulations with centrifuge test results
| العنوان: | Seismic site response of layered saturated sand: comparison of finite element simulations with centrifuge test results |
|---|---|
| المؤلفون: | Sparsha Sinduri Nagula, Yu-Wei Hwang, Shideh Dashti, Jürgen Grabe |
| المصدر: | International Journal of Geo-Engineering, Vol 12, Iss 1, Pp 1-15 (2021) |
| بيانات النشر: | SpringerOpen, 2021. |
| سنة النشر: | 2021 |
| المجموعة: | LCC:Hydraulic engineering |
| مصطلحات موضوعية: | Liquefaction, Centrifuge, Constitutive modelling, Hypoplastic, Free-field response, Hydraulic engineering, TC1-978 |
| الوصف: | Abstract A numerical model based on the finite element framework was developed to predict the seismic response of saturated sand under free-field conditions. The finite element framework used a non-linear coupled hypoplastic model based on the u-p formulation to simulate the behaviour of the saturated sand. The u-p coupled constitutive model was implemented as a user-defined routine in commercial ABAQUS explicit 6.14. Results of centrifuge experiments simulating seismic site response of a layered saturated sand system were used to validate the numerical results. The centrifuge test consisted of a three-layered saturated sand system subjected to one-dimensional seismic shaking at the base. The test set-up was equipped with accelerometers, pore pressure transducers, and LVDTs at various levels. Most of the constitutive models used to date for predicting the seismic response of saturated sands have underestimated volumetric strains even after choosing material parameters subjected to rigorous calibration measures. The hypoplastic model with intergranular strains calibrated against monotonic triaxial test results was able to effectively capture the volumetric strains, reasons for which are discussed in this paper. The comparison of the numerical results to centrifuge test data illustrates the capabilities of the developed u-p hypoplastic formulation to perform pore fluid analysis of saturated sand in ABAQUS explicit, which inherently lacks this feature. |
| نوع الوثيقة: | article |
| وصف الملف: | electronic resource |
| اللغة: | English |
| تدمد: | 2092-9196 2198-2783 |
| Relation: | https://doaj.org/toc/2092-9196; https://doaj.org/toc/2198-2783 |
| DOI: | 10.1186/s40703-021-00155-2 |
| URL الوصول: | https://doaj.org/article/52747928b2aa44059bdb5fc2ac84572d |
| رقم الأكسشن: | edsdoj.52747928b2aa44059bdb5fc2ac84572d |
| قاعدة البيانات: | Directory of Open Access Journals |
Find this article in full text from Springer Verlag. 
Full Text Finder | تدمد: | 20929196 21982783 |
|---|---|
| DOI: | 10.1186/s40703-021-00155-2 |