Seasonally Frozen Ground Effects on the Seismic Response of Highway Bridges

Abstract and project information last updated: 17 September 2012. Project updates are dated below.

AUTC
Project
Number
107014
Principal
Investigator
J. Leroy Hulsey
jlhulsey@alaska.edu
Funding
Agency

US Department of Transportation (RITA)

Alaska Department of Transportation & Public Facilities

Project
Budget
175340
Start
Date
3 August 2007
Estimated
End Date
28 February 2010

Abstract

Permafrost degradation in regions of high seismic activity increases the potential for soil liquefaction, which can be a serious threat to transportation and utility infrastructure, as many professionals observed during the November 2002 Denali Earthquake (magnitude Mw 7.9). This project conducted laboratory studies to investigate the liquefaction resistance of frozen and seasonally frozen ground. Researchers examined how soil liquefaction is influenced by freeze-thaw cycles throughout the year, and how liquefaction is influenced by temperature distribution in degrading permafrost. The results of this study will help establish criteria for liquefaction susceptibility in melting permafrost and soils that regularly undergo freeze-thaw cycles.

Related Project Activity

7 August 2009

Yang Presents Permafrost Effects on Bridges under Seismic Activity

by Joel Bailey

Joey Yang made a presentation on “Seasonally Frozen Soil Effects on the Seismic Performance of Highway Bridges”.