Seismic Response Considerations in Foundation Designby Peter H. Edinger, Mueser Rutledge Construction, Engineers, United States,
Abstract: There are no generally accepted procedures to determine the potential magnitude of reduction of footing bearing capacity that may result from soil strains or pore pressure changes during an earthquake, except for the limiting case of soil liquefaction. Analyses summarized in this paper indicate that, at present, seismic effects on bearing capacity can only be approximated within broad ranges. The significant conclusion is that the most prudent present approach to seismic design of spread footings is the use of conservative static foundation design parameters.
Subject Headings: Seismic design | Seismic tests | Load bearing capacity | Soil liquefaction | Soil pressure | Footings | Soil stress
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