00771195

Component

https://doi.org/10.3141/1675-03

http://scholar.google.com...ayne&publication_year=1999

Driven piles are a common foundation used to support highway bridges. Data gathered from instrumented piles and piezocone tests in fine-grained soils indicate that variable pore pressure profiles, which depend on the overconsolidation ratio of the soil, can develop during penetration. For piles driven in soft clays and silts, the pore pressure profiles developed show a monotonically decreasing response with time. However, for piles driven in heavily overconsolidated silts and clays, the pore pressure profiles show dilatory behavior, with the pore pressure behavior increasing from the initial measured value to a maximum, and then decreasing to hydrostatic values. A theoretical framework is presented that combines cavity expansion theory and critical state soil mechanics with an analytical solution to the radical consolidation equation to estimate the pore pressure response as a function of time and to evaluate the coefficient of consolidation of fine-grained soils on the basis of instrumented pile and piezocone data. The method is able to describe the pore pressure response curve in soils that demonstrate either monotonically decreasing or dilatory pore pressure behavior. Driven pile data from three sites are used to verify the estimations of the model.

This paper appears in Transportation Research Record No. 1675, Cone Penetration Testing, Corrosion in Earth-Retaining Structures, and Other Emerging Technologies.

English

p. 17-23

1999

Transportation Research Record

0309070740

Figures (5) ; References (37) ; Tables (1)

Coefficients; Cone penetrometers; Consolidations; Equations; Fine grained soils; Overconsolidation; Pile foundations; Pore pressure; Silts; Soft clays; Time duration

Driven piles; Field data

Geotechnology; Highways; I42: Soil Mechanics

TRIS, TRB, ATRI

Oct 20 1999 12:00AM

• COMPARISON OF PIEZOCONE AND LABORATORY SOIL PARAMETERS FOR BRIDGE FOUNDATION DESIGN ON CLAYS: CASE STUDY IN MASSACHUSETTS
• DEVELOPMENT OF CEMENTED SAND MODULE FOR ELECTRIC CONE PENETROMETER
• DEVELOPMENT OF INTEGRATED INTELLIGENT TRANSPORTATION SYSTEMS
• EFFECTS OF STRAY CURRENTS ON PERFORMANCE OF METALLIC REINFORCEMENTS IN REINFORCED EARTH STRUCTURES
• ENGINEERING AND SURVEY-EXCHANGE: STANDARD ENGINEERING DATA FORMAT
• EVALUATION OF GLOBAL POSITIONING SYSTEM DEVICES FOR A QUALITY CONTROL SYSTEM FOR COMPACTION OPERATIONS
• EVALUATION OF PILE CAPACITY PREDICTION METHODS BASED ON CONE PENETRATION TESTING USING RESULTS FROM I-15 LOAD TESTS
• PREDICTION OF BEARING CAPACITY OF FRICTION PILES IN SOFT LOUISIANA SOILS BY CONE PENETRATION TEST
• STRENGTH OF SOFT SWISS LACUSTRINE CLAY: CONE PENETRATION AND TRIAXIAL TEST DATA
• USE OF BIOCELLS FOR ENHANCED BIOREMEDIATION OF SOILS CONTAMINATED WITH HEAVY PETROLEUM HYDROCARBONS
• USE OF DIGITAL CAMERAS FOR PAVEMENT SURFACE DISTRESS SURVEY