한국지반공학회:학술대회논문집 (Proceedings of the Korean Geotechical Society Conference)

한국지반공학회 (Korean Geotechnical Society)
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부산점토의 변형률 속도 의존적인 압밀특성

Strain-rate-dependent consolidation characteristics of Busan clay

  • 김윤태 (부경대학교 해양공학과) ;
  • 조상찬 (부경대학교 해양공학과) ;
  • 조기영 (부산광역시 도시개발공사)
  • Kim, Yun-Tae (Dept. of Ocean Engineering, Pukyong National Univ.) ;
  • Jo, Sang-Chan (Dept. of Ocean Engineering, Pukyong National Univ.) ;
  • Jo, Gi-Young (Busan Urban Development Corporation.)
  • 발행 : 2005.03.25
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초록

In order to analyze effects of strain rate on consolidation characteristics on Busan clay, a series of constant rate of strain(CRS) consolidation tests with different strain rate and incremental loading test(ILT) were performed. From experimental test results, it was found that the preconsolidation pressure was dependent on the corresponding strain rate occurred during consolidation process. Also, consolidation curves normalized with respect to preconsolidation pressure gave a unique stress-strain curve. Coefficient of consolidation and permeability estimated from CRS test had a tendancy to converge to a certain value at normally consolidated range regardless of strain rate. An increase in excess pore pressure without change of total stress was noted on the incremental loading test after the end of loading.

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