Performance assessment of deep penetration offshore piles driven into Calcareous soils

Conference · Tue May 01 04:00:00 EDT 1984 · Proc., Annu. Offshore Technol. Conf.; (United States)

OSTI ID:6316290

Ping, W C.V.; deMatos, S F.D.; deMello, J R; Locke, G E

This paper presents the results of an installation monitoring and performance assessment program for offshore platform foundations in Campos Basin on the Brazilian Continental Shelf. Pile driving dynamic measurements were conducted during piling installation of the Enchova and Namorado platforms. Measurements were obtained on nine platform piles and during the restrike on six of those instrumented piles. The foundation piles were driven openended into complex site stratigraphies containing a shallow layer of calcareous sands/clays near the mudline followed by sandy silts and silty clays intermixed with layers of sand and shell fragments. This paper discusses the approach that was taken to evaluate hammer-pile-soil interaction for offshore driven piles. This included pre-field wave equation driveability analysis, field pile driving dynamic measurements, and post-field foundation assessment. This paper provides the offshore engineer with useful information such as measured driving system energy output and efficiency for both monitored Menck and Vulcan hammers, experienced gained during piling installation in calcareous soils, soil set-up effect, and an estimate of long-term pile capacity.

• Research Organization: The Earth Technology Corp.
• OSTI ID: 6316290
• Report Number(s): CONF-8405208-
• Conference Information: Journal Name: Proc., Annu. Offshore Technol. Conf.; (United States) Journal Volume: 3
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
420206 -- Engineering-- Mining & Drilling Equipment & Facilities-- (1980-1989)
423000* -- Engineering-- Marine Engineering-- (1980-)
BRAZIL
CLAYS
CONTINENTAL MARGIN
CONTINENTAL SHELF
DEVELOPING COUNTRIES
DYNAMICS
EFFICIENCY
ENERGY EFFICIENCY
EQUATIONS
FOUNDATIONS
GEOLOGY
INSTALLATION
LATIN AMERICA
LAYERS
MECHANICAL STRUCTURES
MECHANICS
MONITORING
OFFSHORE PLATFORMS
PERFORMANCE
SAND
SOIL-STRUCTURE INTERACTIONS
SOUTH AMERICA
STRATIGRAPHY
SUPPORTS