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GROUND DISPLACEMENT BEHAVIORS CONSIDERING UNSTEADY SEEPAGE FLOW AND NON-LINEAR DEFORMATION |
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| รหัสดีโอไอ | |
| Title | GROUND DISPLACEMENT BEHAVIORS CONSIDERING UNSTEADY SEEPAGE FLOW AND NON-LINEAR DEFORMATION |
| Creator | HARUYUKI YAMAMOTO and LINGYU MENG |
| Publisher | ISEC Press |
| Publication Year | 2557 |
| Keyword | Excavation projects, Seepage force, Non-linear analysis, Numerical simulation |
| Abstract | One major concern for excavation projects is the ground displacement generated around the excavated zone. In this paper, a 2-dimensional model analysis was made on non-linear ground behavior around excavation due to unsteady seepage of groundwater, taking into account the saturated-unsaturated theory by using Toyo-ura sand. The finite-element method and finite-different method were employed to study the space problem and time dimension, respectively. The numerical simulation code implemented by FORTRAN was applied to predict the flow-velocity distribution and the results of ground displacement. To validate the programming, a simple model was tested for comparison with tri-axial test data. The samples were made of Toyo-ura sand with a relative density of 90%. The programming also calculated flow-velocity distribution and ground displacement results of dewatering in excavation work over time. Results showed that the effect of horizontal displacement caused by seepage flow plays a very important role in the displacement field. This numerical simulation method provides a more reasonable computing scheme compared to traditional methods. All have theoretical meaning and applicable value, and also present useful references for the excavation stability and disaster prediction. |
| ISBN | 978-0-9960437-0-0 |
