1 / 34

S. Bartlett, D. Negussey , C. Farnsworth, A. Stuedlein

Construction and Long-Term Performance of Transportation Infrastructure Constructed Using EPS Geofoam on Soft Soil Sites in Salt Lake Valley, Utah. S. Bartlett, D. Negussey , C. Farnsworth, A. Stuedlein. Selected Topics. Geotechnical Conditions in Salt Lake Valley Geotechnologies

catrin
Download Presentation

S. Bartlett, D. Negussey , C. Farnsworth, A. Stuedlein

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript


  1. Construction and Long-Term Performance of Transportation Infrastructure Constructed Using EPS Geofoam on Soft Soil Sites in Salt Lake Valley, Utah S. Bartlett, D. Negussey, C. Farnsworth, A. Stuedlein

  2. Selected Topics • Geotechnical Conditions in Salt Lake Valley • Geotechnologies • 100 South Street Array • 3300 South Street Array • State Street Array • Settlement Performance of Other Geotechnologies

  3. I-15 Great Salt Lake I-215 Wasatch Mountains I-80 I-80 I-80 I-15 I-215 I-215 Oquirrh Mountains I-15

  4. Geotechnical ConditionsSubsurface Profile in Salt Lake Valley Alluvium Bonneville Clay Soft Clay (10-m thick) Pleistocene Alluvium Cutler Clay

  5. Geotechnical ConditionsSettlement Record 12 m 1.4 m

  6. Geotechnologies PV Drains 2-Stage MSE Walls

  7. Geotechnologies Lime Cement Columns EPS Geofoam

  8. Geofoam Placement Areas • 500 N • 100 S • 400 S • 900 S • 1300 S • State St • 2100 S • 3300 S

  9. Primary Uses of Geofoam on the I-15 Project • Reduce Settlement to Protect Buried Utilities • Improve Slope Stability of Embankments • Rapid Construction in Time Critical Areas

  10. EPS Density * Type VIII was used for I-15 Reconstruction

  11. Geotechnical InstrumentationVW Pressure Cells

  12. LEVEL 6 LEVEL 4 LEVEL 2 LEVEL 0 Geotechnical InstrumentationMagnet Extensometers

  13. Geotechnical InstrumentationHorizontal Inclinometer

  14. Geotechnical InstrumentationSurveying

  15. 100 South Instrumentation Array 100 South • 500 N • 100 S • 400 S • 900 S • 1300 S • State St • 2100 S • 3300 S

  16. 100 South Array(Construction)

  17. 100 South Array(cross-section view)

  18. 100 South Array(profile view)

  19. 100 South Array(Load and Pressure Cells)

  20. 100 South Array(Vertical Strain)

  21. 100 South Array(Creep Settlment)

  22. 3300 South Instrumentation Array • 500 N • 100 S • 400 S • 900 S • 1300 S • State St • 2100 S • 3300 S 3300 South

  23. 3300 South Array(Construction)

  24. 3300 South Geofoam Array(Cross-Sectional View)

  25. 3300 South Array(Load and Pressure Cells)

  26. 3300 South Array(Vertical Settlement / Strain) 1 % vertical strain (end of construction)

  27. 3300 South Array(Creep Settlement)

  28. State Street Instumentation State Street • 500 N • 100 S • 400 S • 900 S • 1300 S • State St • 2100 S • 3300 S

  29. State Street Construction State Street Array

  30. State Street Array

  31. State Street Array(Pressure Cells Measurements)

  32. Geotechnologies’ Settlement Performance

  33. Conclusions • EPS geofoam exhibited the best overall settlement performance of the I-15 geotechnologies • Compression, seating and inter-block gap closure of EPS produced about 1 percent vertical deformation during construction loading. • Vertical pressure levels are in reasonable agreement with allowable design limits of about 30 kPa. • I-15 EPS embankment has undergone about 0.2 to 0.4 percent creep deformation in a 10-year post construction period. • The 10-year design criterion has been met and the 50-year design criterion of 1.5 percent total strain will most likely be met.

  34. Questions

More Related