Numerical Simulations of Liquefaction Phenomena after Emilia Romagna (20 May 2012) Earthquake
- 1. D. Forcellini, S. Gobbi and G. Guerra Università di San Marino davforc@omniway.sm Numerical simulations of liquefaction phenomena after Emilia Romagna (20 May 2012) earthquake
- 2. OPENSEES PL
- 6. CASE STUDY
- 7. CASE STUDY
- 8. CASE STUDY
- 9. CASE STUDY
- 12. TRADITIONAL METHODS (Youd and Perkins 1978)
- 13. CASE STUDY
- 14. CLAY MATERIALS
- 15. SAND MATERIALS
- 16. INPUT MOTION 0.16 0.15 0.14 0.13 0.12 0.11 0.10 0.09 0.08 0.07 0.06 0.05 0.04 0.03 0.02 0.01 0.00 -0.01 -0.02 -0.03 -0.04 -0.05 -0.06 -0.07 -0.08 -0.09 -0.10 -0.11 -0.12 -0.13 -0.14 -0.15 -0.16 -0.17 Accelerogramma L1 0 2 4 6 8 10 12 14 16 18 20 Accelerazione (g) t (s)
- 17. FEM DEFINITION
- 19. FINITE ELEMENTS
- 20. CALIBRATION (1558 nodes, 1224 elements) (1911 nodes, (825 nodes, 616 elements) 1520 elements)
- 21. CALIBRATION 100.0 90.0 80.0 70.0 60.0 50.0 40.0 30.0 20.0 10.0 0.0 EPP (5.55 m) 0 2 4 6 8 10 12 14 16 18 20 EPP (kPa) t (s) Mesh 01 Mesh 03 Mesh 04
- 22. CALIBRATION 0.05 0.05 0.04 0.04 0.03 0.03 0.02 0.02 0.01 0.01 0.00 TOP DISPLACEMENT 0 2 4 6 8 10 12 14 16 18 20 Top. Displ. (m) t (s) Mesh 01 Mesh 03 Mesh 04
- 23. 100.00 90.00 80.00 70.00 60.00 50.00 40.00 30.00 20.00 10.00 0.00 Excess Pore Pressure at 3.70 m 100.00 90.00 80.00 70.00 60.00 50.00 40.00 30.00 Excess Pore Pressure at 5.55 m 100.00 90.00 80.00 70.00 60.00 Excess Pore Pressure at 7.40 m 0 5 10 15 20 25 30 35 40 EPP (kPa) 50.00 t (s) 20.00 10.00 0.00 40.00 30.00 0 5 10 15 20 25 30 35 40 EPP (kPa) t (s) 20.00 10.00 0.00 0 5 10 15 20 25 30 35 40 EPP (kPa) t (s) RESULTS
- 24. 0.05 0.04 0.03 0.02 0.01 0.00 Top Lateral Displacement 0.05 0.04 0.03 0.02 0.01 Lateral Displacement at 3.70 m 0.05 0.04 0.03 0.02 Lateral Displacement at 5.55 m 0.05 0.04 Lateral Displacement at 7.40 m 0 5 10 15 20 25 30 35 40 Lateral Displacement (m) t (s) 0.00 0.01 0.03 0.02 0 5 10 15 20 25 30 35 40 Lateral Displacement (m) t (s) 0.00 0.01 0 5 10 15 20 25 30 35 40 Lateral Displacement (m) t (s) 0.00 0 5 10 15 20 25 30 35 40 Lateral Displacement (m) t (s) RESULTS
- 25. RESULTS
- 27. SSI STUDIES (future research)
- 28. CYCLIC TP
- 31. REFERENCE
- 32. D. Forcellini, S. Gobbi and G. Guerra Università di San Marino davforc@omniway.sm THANK YOU! davforc@omniway.sm