Seismic and dynamic analyses for design of offshore pipelines traversing sloped bottom profiles

Conference · Sat Jan 01 04:00:00 EST 1983 · Am. Soc. Mech. Eng., Pressure Vessels Piping Div., (Tech. Rep.) PVP; (United States)

OSTI ID:5452387

Kistler, E L

Procedures are developed for determining initial failure criteria and the major flow dynamics information necessary in design of an offshore pipeline traversing sloped bottom profiles subject to both seismic activity and surface wave action. It is shown that customary two-parameter seismic specifications are not adequate to establish a unique solution for the stress and displacement history of the pipeline. Soil behavior under sustained and repeated loading and various factors influencing downslope movement of the soil are reviewed. Procedures for analysis of pore pressure generation and dissipation during loading and for analysis of instability and slope failure prior to liquefaction are discussed. The influences of total duration of load, magnitude and asymmetry of the stresses, number of load cycles, history of previous excitation and other factors are considered. Specifically, it is noted that in cohesionless soils, the proper analysis of pore pressure generation, failure and post failure downslope motions due to irregular cyclic loading depends on proper choice of at least three parameters: a design reference stress level, an appropriate corresponding anticipated number of loading cycles, and frequency of the cycles or total duration.

• Research Organization: Ernest L. Kistler and Associates, Inc., Houston, TX
• OSTI ID: 5452387
• Report Number(s): CONF-830607-
• Conference Information: Journal Name: Am. Soc. Mech. Eng., Pressure Vessels Piping Div., (Tech. Rep.) PVP; (United States) Journal Volume: PVP-VOL. 77
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
022000* -- Petroleum-- Transport
Handling
& Storage
03 NATURAL GAS
032000 -- Natural Gas-- Transport
Handling
& Storage
42 ENGINEERING
423000 -- Engineering-- Marine Engineering-- (1980-)
DESIGN
DISSIPATION FACTOR
DYNAMICS
FLUID FLOW
INSTABILITY
LOADING
MATERIALS HANDLING
MECHANICS
OFFSHORE SITES
PARAMETRIC ANALYSIS
PIPELINES
SEISMIC EVENTS
SEISMIC SURFACE WAVES
SEISMIC WAVES
SOIL MECHANICS
STRESSES