FINITE ELEMENT PROCEDURE FOR MODELING SOILSTRUCTURE- FOUNDATION INTERACTION IN BUILDING SEISMIC DAMAGE RESPONSE | ||
| The International Conference on Civil and Architecture Engineering | ||
| Article 8, Volume 7, 7th International Conference on Civil and Architecture Engineering, May 2008, Pages 148-160 PDF (711.16 K) | ||
| Document Type: Original Article | ||
| DOI: 10.21608/iccae.2008.45418 | ||
| Author | ||
| ISMAIL MOHAMED KAMAL | ||
| Permanent staff (PhD) – Civil Eng. Department, Military Technical Collage – Cairo, EGYPT. | ||
| Abstract | ||
| A finite element based computational procedure is presented for soil-structure interaction modelling in building due to seismic damage response. Attention is focused on a combination of contact surfaces at the soil-foundation interface, nonlinear soil material response, and infinite elements as transmitting boundary conditions. A rationale for efficient mesh design is offered for the detailed building/foundation/soil system model based on computational wave propagation studies using infinite elements. To evaluate the performance of the proposed procedure for handling SSI, a complete comparison between four models for a 3-story office building were performed. The models classified as one fixed base model without any effect of soil, second with the conventional treatment of the foundation and soil as discrete linear springs, the third incorporating the proposed procedure with elastic properties of soil, and the fourth proposed procedure with non-linear properties of soil. This evaluation was based on the capability of the model to capture the different column damage indices. These indices are: acceleration time history, the floors drift ratio, and moment-curvature plot for the column. The strategy adopted for the analysis is performed a seismic dynamic analysis for the four models by using the general purpose finite element code ABAQUS. Conclusions that can help in clearing and analyze the system response were cleared out. | ||
| Keywords | ||
| 3-D Simulations; soil-structure interaction; Infinite Elements; Nonlinear Contact Surface; Seismic Dynamic Analysis | ||
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