Prediction of pore water pressure buildup and liquefaction of sands during earthquakes by the Cyclic Strain Method
Year: 1982
Type: report
Abstract: A cyclic strain approach for evaluating the buildup of excess pore water pressures and the potential for liquefaction of level sandy sites during earth- quakes Is proposed In this report.This strain approach Is based on the premise that, for undralned loading of sand, there Is a predictable correlation between cyclic shear strain and excess pore water pressure; also, that there Is a threshold shear strain below which there Is no sliding at the contacts between sand particles and no pore water pressure buildup can occur.As the result, a sand deposit will not develop excess pore pressures If the Induced seismic shear strain Is less than the threshold strain.Both theoretical evidence and experi- mental verification supporting the cyclic strain approach and the existence of the threshold, are presented In the report.Based on all these findings, a specific design method is proposed for predicting if excess pore pressures will develop at a specific site during a design earthquake.
DOI: 10.6028/nbs.bss.138
Authors: R Dobry, R S Ladd, F Y Yokel, R M Chung, D Powell
Language: English
Subfield: Civil and Structural Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: gold
Funder: Rensselaer Polytechnic Institute
OpenAlex ID: W618043132