Effects of rock-support and inclined-layer conditions on load carrying behavior of piled rafts

Yanghoon Roh, Garam Kim, Incheol Kim, Junhwan Lee

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In this study, the load carrying behavior of piled rafts installed in inclined bearing rock layer was investigated for rock-mounted and-socketed conditions. It was found that settlements induced for an inclined bearing rock layer are larger than for a horizontal layer condition. The load capacity of piled rafts for the rock-mounted condition decreased as rock-layer inclination angle (θ) increased, while vice versa for the rock-socketed condition. The load capacities of raft and piles both decreased with increasing θ for the rock-mounted condition. When bearing rock layer was inclined, loads carried by uphill-side piles were greater than those by downhill-side piles. The values of differential settlements of rock-mounted and-socketed conditions were not significantly different whereas slightly higher for the rock-socketed condition. The values of load sharing ratio (αp) and its variation with settlement were not markedly changed by the inclination of bedrock. It was shown that αp for piled rafts installed in rock layer was not affected by θ whereas actual loads carried by raft and piles may vary depending on the pile installation and rock-layer inclination conditions.

Original languageEnglish
Pages (from-to)363-371
Number of pages9
JournalGeomechanics and Engineering
Issue number4
Publication statusPublished - 2019 Jul 20


All Science Journal Classification (ASJC) codes

  • Civil and Structural Engineering
  • Geotechnical Engineering and Engineering Geology

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