Bearing Capacity Study for Small-Scale Testing of Rotary Pile with Helix Plate

축소모형 로타리 파일의 나선날개에 따른 지지성능에 관한 연구

Shin, Eun-Chul;Kim, Kyeong-Sig;Moon, Hyeong-Rok

  • Received : 2015.11.25
  • Accepted : 2016.03.23
  • Published : 2016.03.30


Rotary pile consists a single or multiple helix plate and it is installed into the ground using the rotation of the helix plate. Rotary pile in soft ground is able to be supported by pile shaft and helix plate. When the pile is installed into hard layer relatively, the end bearing capacity is possible to be increased by the lower helix plate. In this paper, small-size rotary piles were manufactured with using steel pipe which is reduced to 1/5 size of the rotary pile on the construction field. Pile load test was carried out on the foundation soil which was formed by weathered soft soil. The bearing capacity of small-scale piles depends on the number of helix plate, the length of plate diameter, and an interval of plates, respectively. The bearing capacity of pile increases about 40% with 3 helix plate and it is also confirmed that the bearing capacity is improved about 10% as the increment of plate interval.


Rotary pile;Laboratory model test;Bearing capacity;Pile shaft;Helix plate


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Supported by : 인천대학교