›› 2007, Vol. 28 ›› Issue (6): 1167-1171.

• Fundamental Theroy and Experimental Research • Previous Articles     Next Articles

Vertical bearing behavior of belled pier in thick loess-like soil

GAO Guang-yun1, PENG Zheng-guang1, JIANG Jian-ping 2, Gu Bao-he3   

  1. 1. Key Laboratory of Geotechnical and Underground Engineering of Ministry of Education, Tongji University, Shanghai 200092, China; 2. College of Traffic Transportation, Shanghai Maritime University, Shanghai 200135, China; 3. Comprehensive Institute of Geotechnical Investigation and Surveying, Ministry of Construction, Beijing 100007, China
  • Received:2005-06-28 Online:2007-06-11 Published:2013-09-13

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Abstract: Based on the load tests of 8 large diameter belled piers and 2 friction piles, the vertical bearing behavior of the belled pier in non-collapsing loess-like soil is studied. The result shows that if other conditions are the same, the bearing capacity of belled pier (kN) increases and the end resistance decreases as the increase of the belled diameter. When both belled diameter (D) and shaft diameter (d) remain constants, the total ultimate side resistance enhances with L/d increasing. When the shaft diameter (d) is changeless, the bearing capacity of belled pier changes irregularly with L/D increasing; the percentage of total end resistance (greater than equal-diameter pile) decreases; the average ultimate side resistance (smaller than equal-diameter pile) increases; but better bearing behavior occurs as L/D=3. If the shaft diameter and the length of belled pier in soil are the same with the friction pile, the bearing capacity of the former is greater than the latter; and the settlement is smaller than the latter.

Key words: large diameter belled pier, vertical bearing behavior, loess-like soil, length-diameter ratio L/d, length-diameter ratio L/D, equal-diameter pile

CLC Number: 

  • TU 470
  • Please send e-mail to pingzhou3@126.com if you would like to read full paper in English for free. Parts of our published papers have English translations.
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