Seismic Deformation of Bar Mat Mechanically Stabilized Earth Walls. II: A Multiblock Model
| Autor: | Robert V. Whitman, Raj V. Siddharthan, Bruce L. Kutter, Magdy El-Desouky, Vela Ganeshwara |
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| Rok vydání: | 2004 |
| Předmět: |
Engineering
Centrifuge Deformation (mechanics) business.industry Equations of motion Structural engineering Foundation engineering Geotechnical Engineering and Engineering Geology Seismic wave Displacement (vector) Seismic analysis Geotechnical engineering business General Environmental Science Mechanically stabilized earth |
| Zdroj: | Journal of Geotechnical and Geoenvironmental Engineering. 130:26-35 |
| ISSN: | 1943-5606 1090-0241 |
| Popis: | A relatively simple rigid plastic multiblock computational model has been developed to predict the permanent seismic displacement of mechanically stabilized earth (MSE) walls. The model formulation was based on many observations made from a series of centrifuge tests carried out on many different configurations of MSE walls. The proposed model is similar to the sliding block method of Newmark. The approach accounted for the variation in acceleration within the backfill and the nonuniform nature of the permanent wall face deformation. The predictive capability of the proposed model has been verified using centrifuge test results obtained for four MSE walls each subjected to three earthquake excitations with strength varying between 0.48 and 0.9g. The analytical model captures many aspects of the characteristic deformation behavior of MSE walls observed in the centrifuge tests. In each of the eleven wall displacement cases studied, the backfill friction angle that yielded a good match between the computed and measured maximum wall displacement was consistent with the corresponding laboratory measured values. |
| Databáze: | OpenAIRE |
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