Creep of Plate Anchors Embedded in Bentonite

Bentonite에 근입된 앵커의 Creep 특성

  • 신방웅 (충북대학교 토목공학과) ;
  • 이준대 (충북대학교 토목공학과) ;
  • 신진환 (충주산업대학교 산업안전공학과) ;
  • 이봉직 (충주산업대학교 산업안전공학과)
  • Published : 1995.12.30


Anchors find their use in providing tie-back resistance for submerged footings, transmission towers, tunnels and ocean structures. Laboratory model teats were performed for the short-term net ultimate uplift capacity of a circular anchors with respect to various embedment depths and moisture content in saturated bentonite. The tests have been conducted with the anchor at two different moisture contents. Based an the model test results, empirical relationships between the net load, rate of strain, and time have been developed. Test results are as follows. 1) In creep tests for load versus ultimate uplift capacity, the displacement of plate anchors rapidly increases during the primary stage but thereafter becomes constant over a period of time. 2) Displacement increased with the increase of the sustain load and embedded ratio in soil. 3) If the load is less than or equal to 75% of the short-term ultimate uplift capacity, a complete pullout does not occur due to creep.