Closure by Zdeněk P. Bažant,5 Fellow, ASCE
freshwater and sea ice may influence the failure load. How-ever, the discusser considered creep properties of freshwater and saline ice and did not find much deviation between a line (Pf} h2) and the estimated failure loads (Sodhi 1995a). The dependence of failure loads on salinity of ice appears to...
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| Format: | Text |
| Language: | English |
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| Online Access: | http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.694.2888 http://www.civil.northwestern.edu/people/bazant/PDFs/Papers/D17.pdf |
| Summary: | freshwater and sea ice may influence the failure load. How-ever, the discusser considered creep properties of freshwater and saline ice and did not find much deviation between a line (Pf} h2) and the estimated failure loads (Sodhi 1995a). The dependence of failure loads on salinity of ice appears to be a secondary effect, but its dependence on h2 is supported by the strength failure criterion (Bazant 1993) because of creep de-formation during wedging action. On page 1322, the authors state: ‘‘Sea ice exhibits creep, and the effective fracture energy as well as the strength de-pends on the rate of crack growth.’ ’ Analysis of this problem incorporating creep will require abandoning LEFM, on which they base their present conclusions. |
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