Soil compressibility in transient unsaturated seepage analyses

Timothy D Stark, Navid H. Jafari, Aaron L. Leopold, Thomas L. Brandon

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Most levee underseepage and uplift analyses are based on steady-state seepage and can yield conservative results. Although computations are simpler and steady-state seepage parameters are easier to determine and readily available, transient and unsaturated seepage analyses are more representative of levee seepage conditions. Transient seepage analyses using a case study floodwall indicate that as soil compressibility of the underseepage layer decreases, rapid landside pore-water pressures increase and can approach steady-state values. The transient results for this case study also indicate that uplift factor safety during the flood event are about 25% higher than steady-state. The effect of soil compressibility can delay or accelerate the onset of uplift water pressure increase from the initial steady-state conditions.

Original languageEnglish (US)
Title of host publicationIFCEE 2015 - Proceedings of the International Foundations Congress and Equipment Expo 2015
EditorsJ. Brian Anderson, Magued Iskander, Muhannad T. Suleiman, Debra F. Laefer
PublisherAmerican Society of Civil Engineers (ASCE)
Pages1318-1332
Number of pages15
ISBN (Electronic)9780784479087
DOIs
StatePublished - Jan 1 2015
EventInternational Foundations Congress and Equipment Expo 2015, IFCEE 2015 - San Antonio, United States
Duration: Mar 17 2015Mar 21 2015

Publication series

NameGeotechnical Special Publication
VolumeGSP 256
ISSN (Print)0895-0563

Other

OtherInternational Foundations Congress and Equipment Expo 2015, IFCEE 2015
Country/TerritoryUnited States
CitySan Antonio
Period3/17/153/21/15

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Architecture
  • Building and Construction
  • Geotechnical Engineering and Engineering Geology

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