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Penetrometro Simple y Sismico
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Public Page
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Diapositiva 1
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Slide2
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Slide3
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SDMT Equipment
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DMT equipment
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DMT Flat Dilatometer equipment
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DMT Test Layout
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DMT Equipment (mechanical)
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Automatic Acquisition of DMT readings
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Machines for advancing the DMT and SDMT equipment
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Truck Penetrometer (most efficient)
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Light Penetrometer (most common)
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SDMT in Concepcion in sand (1/12/2014)
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Many ways of advancing the blade
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Drill Rig ?? downhole Torpedo method
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Slide16
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Drill Rig used as a penetrometer
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DMT test from Jack-up
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SDMT on floating barge (Genova ?? Italy)
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Seafloor DMT
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First Seafloor DMT test: 13 June 2014
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First Seafloor DMT test: 13 June 2014
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First Seafloor DMT test: 13 June 2014
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Field data and Interpretation of the Results
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Field Data
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DMT Intermediate parameters
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DMT Formulae ?? Interpreted parameters
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ID contains information on soil type
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ID contains information on soil type
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KD contains information on stress history
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KD contains information on stress history
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KD contains information on stress history
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KD correlated to OCR (clay)
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KD correlated to K0 (clay)
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ED contains information on deformation
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M obtained from Ed using information on stress history (Kd) and soil type (Id)
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Definition of M (no ambiguity)
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M Comparison from DMT and from Oedometer
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Cu from OCR Ladd SHANSEP 77 (SOA TOKYO)
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Cu comparisons from DMT and from other tests
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Interpretation of Soil Description & Unit weight
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Slide42
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C readings (in sand): pore water pressure
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Example of C readings
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Example of C readings
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Example of C readings
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Dissipation test in cohesive soils estimate coefficient consolidation & permeability
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Acquisition DMT Dissipation (T, A)
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DMT Dissipation Interpretation (Ch, Kh)
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Validation of consolidation coefficient DMT vs. other dissipation tests
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Seismic Dilatometer (2004)
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SDMT ?? Test Layout
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Shear wave velocity measurement
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Hammer generating shear wave
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Data Acquisition is rapid (7-8 sec)
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Vs interpretation real time
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Automatic delay evaluation
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Seismograms
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SDMT main features
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Diapositiva 60
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Vs in Moss Landing ?? California USA
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Soils testable by DMT/SDMT
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Vs in non-penetrable soils
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SDMT validation in non-penetrable soils
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SDMT in borehole (140m) ?? Aquila (ITALY)
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Main Applications using SDMT results
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SDMT main results
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SDMT repeatability
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Other SDMT results
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Slide70
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Slide71
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Slide72
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KD leads to a more economical design
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Slide74
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Slide75
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Main DMT Application: Settlement prediction
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Many publications & case histories of good agreement between measured and DMT-predicted
settlements / moduli:
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Observed vs. predicted by DMT Silos on Danube Bank (Belgrade )
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Observed vs. predicted by DMT Dormitory Building 13 storeys (Atlanta - USA)
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M at Sunshine Skyway Bridge Tampa Bay ?? Florida
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Possible reasons DMT good settlement predictions
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Possible reasons DMT predicts well settlement
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Go and MDMT on the G - ? decay curve
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Slide84
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Slide85
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Slide86
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DMT for Compaction Control
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DMT vs CPT sensitivity to Compaction
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Compaction Control DMT vs CPT
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Slide90
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Subgrade Compaction Control
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Slide92
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Liquefaction risk assessment
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Slide94
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Slide95
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Slide96
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SDMT for LIQUEFACTION
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SDMT for LIQUEFACTION
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SDMT for LIQUEFACTION
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Liquefaction case history in Costarica
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Slide101
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DMT-KD method ? Verify if an OC clay slope contains active (or old quiescent) slip surfaces
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Validation of DMT-KD method
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Slip surface detection in clay slopes
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Reconstruction of multiple slip surfaces
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Quantify s'h relaxation behind a landslide
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Slide107
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Seismic Design: simplified use of Vs
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Vs for Seismic Design
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Slide110
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Design of laterally loaded piles (Winkler)
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Observed vs. DMT predicted pile deflections
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Slide113
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DMT for DESIGN of DIAPHRAGM WALLS
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Slide115
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Some SDMT test sites...
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Underground in Rome - New Line C
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Palazzo Esposizioni - Rome
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SDMT - NASA Cape Kennedy (USA)
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SDMT at Zelazny Most ?? Poland
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DMT users community
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STANDARDS
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Website: www.marchetti-dmt.it
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Website: www.marchetti-dmt.it
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Slide125
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Slide126
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Slide127
