SEISMIC DESIGN OF LATERALLY LOADED PILES IN FROZEN GROUND
Frozen soils, including both those seasonally frozen as well as permafrost, exist extensively in Alaska and other cold regions. During past earthquakes, extensive damages were observed in deep foundations in the ground, and frozen ground appears to be the direct cause of at least some of those damag...
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2014
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ftdatacite:10.4231/d3pv6b75x 2023-05-15T17:57:51+02:00 SEISMIC DESIGN OF LATERALLY LOADED PILES IN FROZEN GROUND Zhaohui Yang Li, Qiang Marx, Elmer Horazdovsky, Jacob Hulsey, Leroy 2014 https://dx.doi.org/10.4231/d3pv6b75x https://nees.org/resources/12045 unknown Network for Earthquake Engineering Simulation (NEES) CC BY 3.0 https://creativecommons.org/licenses/by/3.0 CC-BY Text Conference Papers article-journal ScholarlyArticle 2014 ftdatacite https://doi.org/10.4231/d3pv6b75x 2021-11-05T12:55:41Z Frozen soils, including both those seasonally frozen as well as permafrost, exist extensively in Alaska and other cold regions. During past earthquakes, extensive damages were observed in deep foundations in the ground, and frozen ground appears to be the direct cause of at least some of those damages. The aim of this study is to investigate the effects of seasonally frozen soil on deep foundations during earthquakes, as well as to recommend simplified tools for seismic design practices. Data from a large deformation test of reinforced concrete filled steel-pipe piles embedded in deep seasonally frozen silts were used to evaluate the design parameters of the fixity depth approach, which include depth-to-maximum-moment, depth-to-fixity, and analytical plastic hinge length. In addition, the test data were used to calibrate a sophisticated Finite Element (FE) model, which was then used to conduct a parametric study assessing the effects of variation of frozen soil depth on the fixity depth approach parameters. The fixity depth approach parameters for various frozen soil depths can be used to account for the effects of seasonally frozen soil on pile lateral behavior in seismic design practices. Conference Object permafrost Alaska DataCite Metadata Store (German National Library of Science and Technology) |
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Frozen soils, including both those seasonally frozen as well as permafrost, exist extensively in Alaska and other cold regions. During past earthquakes, extensive damages were observed in deep foundations in the ground, and frozen ground appears to be the direct cause of at least some of those damages. The aim of this study is to investigate the effects of seasonally frozen soil on deep foundations during earthquakes, as well as to recommend simplified tools for seismic design practices. Data from a large deformation test of reinforced concrete filled steel-pipe piles embedded in deep seasonally frozen silts were used to evaluate the design parameters of the fixity depth approach, which include depth-to-maximum-moment, depth-to-fixity, and analytical plastic hinge length. In addition, the test data were used to calibrate a sophisticated Finite Element (FE) model, which was then used to conduct a parametric study assessing the effects of variation of frozen soil depth on the fixity depth approach parameters. The fixity depth approach parameters for various frozen soil depths can be used to account for the effects of seasonally frozen soil on pile lateral behavior in seismic design practices. |
format |
Conference Object |
author |
Zhaohui Yang Li, Qiang Marx, Elmer Horazdovsky, Jacob Hulsey, Leroy |
spellingShingle |
Zhaohui Yang Li, Qiang Marx, Elmer Horazdovsky, Jacob Hulsey, Leroy SEISMIC DESIGN OF LATERALLY LOADED PILES IN FROZEN GROUND |
author_facet |
Zhaohui Yang Li, Qiang Marx, Elmer Horazdovsky, Jacob Hulsey, Leroy |
author_sort |
Zhaohui Yang |
title |
SEISMIC DESIGN OF LATERALLY LOADED PILES IN FROZEN GROUND |
title_short |
SEISMIC DESIGN OF LATERALLY LOADED PILES IN FROZEN GROUND |
title_full |
SEISMIC DESIGN OF LATERALLY LOADED PILES IN FROZEN GROUND |
title_fullStr |
SEISMIC DESIGN OF LATERALLY LOADED PILES IN FROZEN GROUND |
title_full_unstemmed |
SEISMIC DESIGN OF LATERALLY LOADED PILES IN FROZEN GROUND |
title_sort |
seismic design of laterally loaded piles in frozen ground |
publisher |
Network for Earthquake Engineering Simulation (NEES) |
publishDate |
2014 |
url |
https://dx.doi.org/10.4231/d3pv6b75x https://nees.org/resources/12045 |
genre |
permafrost Alaska |
genre_facet |
permafrost Alaska |
op_rights |
CC BY 3.0 https://creativecommons.org/licenses/by/3.0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.4231/d3pv6b75x |
_version_ |
1766166353594548224 |