Liquefaction potential mapping for San Francisco
Journal Article
·
· J. Geotech. Eng. Div., Am. Soc. Civ. Eng.; (United States)
The potential of saturated deposits of cohesionless soil in downtown San Francisco to experience initial liquefaction due to seismically induced pore pressure is evaluated. Initial liquefaction, or the zero effective stress state, is used as the index of liquefaction potential because it provides the best available index for damage due to seismically induced pore pressures. Liquefaction potential is evaluated by comparing the conditional probability of liquefaction, or liquefaction susceptibility, to the expected intensity of seismic loading, or liquefaction opportunity. The probabilistic evaluation is made using a liquefaction hazard model developed by Chameau. Assuming the water table to be at the ground surface, results indicate that while no liquefaction is expected anywhere for an intensity with an annual probability of exceedance of 0.05, only the most resistant deposits will survive an event with an annual probability of exceedance of 0.02. For an event with an annual probability of exceedance of 0.01, initial liquefaction is expected to occur within all saturated, cohesionless soil deposits in the downtown San Francisco area. It must be emphasized that in dense soil deposits the consequences of initial liquefaction may be minimal because of their limited shear strain potential.
- Research Organization:
- Terman Engrg. Center, Stanford Univ., Stanford, CA
- OSTI ID:
- 5174932
- Journal Information:
- J. Geotech. Eng. Div., Am. Soc. Civ. Eng.; (United States), Journal Name: J. Geotech. Eng. Div., Am. Soc. Civ. Eng.; (United States) Vol. 111:1; ISSN AJGEB
- Country of Publication:
- United States
- Language:
- English
Similar Records
Liquefaction potential in San Jose, California
Applications of probabilistic methods in geotechnical engineering. Part 2. Analysis of documented case histories using a stochastic model for seismically generated pore pressure and shear strain potential
Liquefaction of marine soils
Conference
·
Tue Dec 31 23:00:00 EST 1991
· Geological Society of America, Abstracts with Programs; (United States)
·
OSTI ID:5929687
Applications of probabilistic methods in geotechnical engineering. Part 2. Analysis of documented case histories using a stochastic model for seismically generated pore pressure and shear strain potential
Technical Report
·
Thu Sep 01 00:00:00 EDT 1983
·
OSTI ID:5125019
Liquefaction of marine soils
Conference
·
Fri Dec 30 23:00:00 EST 1994
·
OSTI ID:403153