Introduction to Geotechnical Engineering

1. ground Introduction to Geotechnical Engineering N. Sivakugan Duration: 13 mins

2. Typical Geotechnical Project Geo-Laboratory~ for testing Design Office~ for design & analysis soil properties design details soil samples construction site

3. Geotechnical Applications

4. firm ground bed rock Shallow Foundations ~ for transferring building loads to underlying ground ~ mostly for firm soils or light loads

5. Shallow Foundations

6. weak soil bed rock Deep Foundations ~ for transferring building loads to underlying ground ~ mostly for weak soils or heavy loads P I L E

7. Driven timber piles, Pacific Highway Deep Foundations

8. Pier Foundations for Bridges • Cable-stayed bridge • Supported on 7 piers, 342 m apart • Longest pier (336) in the world Millau Viaduct in France (2005) A separate slideshow on the construction is in the bottom drawer

9. Pier Foundations for Bridges Millau Viaduct in France (2005)

10. Road Train retaining wall Retaining Walls ~ for retaining soils from spreading laterally

11. reservoir clay core shell soil Earth Dams ~ for impounding water

12. reservoir concrete dam soil Concrete Dams

13. Concrete Dams Three Gorges Dam, Hong Kong

14. Concrete Dams

15. Earthworks ~ preparing the ground prior to construction Roadwork, Pacific Highway

16. Construction hazard ~ an unwelcome visitor at an earthwork site. What does it have to do with Geo?#! A dead Anaconda python (courtesy: J. Brunskill)

17. Geofabrics used on Pacific Highway Geofabrics ~ used for reinforcement, separation, filtration and drainage in roads, retaining walls, embankments…

18. Reinforced Earth Walls ~ using geofabrics to strengthen the soil

19. Tunneling MSE (Mechanically stabilised Earth) wall Chile (2006) – during my sabbatical leave

20. Tunneling

21. Soil Nailing ~ steel rods placed into holes drilled into the walls and grouted

22. Retaining Walls Rock anchors to support the vertical walls

23. warehouse ship sheet pile Sheet Piles ~ sheets of interlockingsteel or timber driven into the ground, forming a continuous sheet

24. Sheet Piles ~ resist lateral earth pressures ~ used in excavations, waterfront structures, ..

25. Sheet Piles ~ used in temporary works

26. Sheet Piles ~ interlocking sections

27. Cofferdam ~ sheet pile walls enclosing an area, to prevent water seeping in

28. Cofferdam ~ sheet pile walls enclosing an area, to prevent water seeping in

29. Landslides

30. Shoring propping and supporting the exposed walls to resist lateral earth pressures

31. Excavations Chile (2006) – during my sabbatical leave

32. Mining

33. Blasting For ore recovery in mines

34. Earthquake Engineering Loma Preita Earthquake, San Francisco (1989)

35. Ground Improvement Impact Roller to Compact the Ground

36. Ground Improvement Sheepsfoot Roller to Compact Clay Soils

37. Ground Improvement Smooth-wheeled Roller

38. Craters formed in compaction Ground Improvement Big weights dropped from 25 m, compacting the ground.

39. Environmental Geomechanics Waste Disposal in Landfills

40. Instrumentation ~ to monitor the performances of earth and earth supported structures ~ to measure loads, pressures, deformations, strains,…

41. Vane Shear Test Standard Penetration Test Soil Testing More Field Tests

42. Triaxial Test on Soil Sample in Laboratory Soil Testing

43. Soil Testing Variety of Field Testing Devices

44. Soil Testing Purdue University, USA Being Pushed around by my Supervisors

45. Typical Safety Factors

46. foundations soil exploration tunneling Some Civil Engineering marvels …. … buried right under your feet.

47. Geotechnical Applications in Townsville

48. Soil Testing Cone Penetration Test Truck – Lavarach Barracks, Townsville

49. Dynamic Compaction JCU site visit to Townsville Port in 2003

50. Sheet pile at Woolcock St