Seismic soil liquefaction at the waterfront. Final report oct 77-oct 78

Technical Report · Tue May 01 04:00:00 EDT 1979

OSTI ID:5155887

Forrest, J B; Ferritto, J M

The vulnerability of waterfront facilities to earthquake-induced soil liquefaction has been demonstrated during several recent earthquakes. A liquefaction threat analysis conducted by the Navy has suggested, however, that reliable procedures for precisely evaluating the extent of this hazard to waterfront structures are not currently available. As a part of a program to remedy this problem, the earthquake-induced liquefaction potential at a coastal Naval installation was evaluated by means of cyclic triaxial testing of undisturbed soil samples. This study shows that for the particular sensitive soil tested, the resistance to liquefaction as determined by laboratory testing of undisturbed samples is considerably larger than that determined using correlations with in situ penetration resistance tests. Both dynamic split spoon driving resistance and quasi-static friction cone resistance were measured in the tests. Field evaluation techniques are discussed, and those considered most promising are noted. Several total stress and effective stress computer codes are discussed, with particular attention to those incorporating pore water dissipating mechanisms. Several example solutions from the literature are presented. (Author)

• Research Organization: Civil Engineering Lab. (Navy), Port Hueneme, CA (USA)
• OSTI ID: 5155887
• Report Number(s): AD-A-078618/6
• Country of Publication: United States
• Language: English

Related Subjects

58 GEOSCIENCES
580300* -- Mineralogy
Petrology
& Rock Mechanics-- (-1989)
COMPUTER CODES
DYNAMIC LOADS
EARTHQUAKES
ENGINEERING
HAZARDS
LIQUEFACTION
MECHANICAL STRUCTURES
POROSITY
RISK ASSESSMENT
SAMPLING
SEISMIC EFFECTS
SEISMIC EVENTS
SHORES
SOIL MECHANICS
SOILS
STRESSES
THERMOCHEMICAL PROCESSES
VULNERABILITY