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François SCHLOSSER & Roger FRANK CERMES (ENPC-LCPC)

Tokyo IWM August 2004. Contribution to Session on : case histories, and strategies for database construction. François SCHLOSSER & Roger FRANK CERMES (ENPC-LCPC). Example of the Saint Maurice noise barrier (see 2 nd Lizzi Lecture by F. Schlosser)

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François SCHLOSSER & Roger FRANK CERMES (ENPC-LCPC)

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  1. Tokyo IWM August 2004 • Contribution to Session on : • case histories, and • strategies for database construction François SCHLOSSER & Roger FRANK CERMES (ENPC-LCPC)

  2. Example of the Saint Maurice noise barrier (see 2nd Lizzi Lecture by F. Schlosser) • 2) An example of database strategy (LCPC design method for micropiles)

  3. Preliminary questions : • What is a micropile ? • When can we expect ‘full interlocking’ effects?

  4. FrenchMicropile Classification

  5. Example of the Saint Maurice noisebarrier

  6. ST MAURICE NOISE BARRIER WALL

  7. LATERAL LOADING TEST

  8. MICROPILE LOAD – DISPLACEMENT CURVES Vertical Inclined ( traction) Axial force at the top( kN ) Displacement at the top (mm)

  9. ROTATION ( R ) VERSUS APPLIED LOAD ( F ) R : rotation of the footing F : (lateral) load applied to the wall R (rad) F (kN)

  10. COMPARISON BETWEEN MEASUREMENTS AND GOUPEG CALCULATIONS Rotation (rad) Measurement Goupeg 1 Goupeg 2 Applied load ( kN)

  11. AXIAL LOAD ON VERTICAL PILE Force (kN) ( compression ) Depth z (m)

  12. AXIAL LOAD ON INCLINED MICROPILE Force (kN) ( traction ) Depth z (m)

  13. 2) An example of database strategy

  14. Design of high pressure injected anchorages and micropiles LCPC method (Bustamante and Doix, 1985)

  15. Conclusion (main) :- one should know right from the beginning what is the aim of the study/test

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