›› 2011, Vol. 32 ›› Issue (12): 3637-3641.

• Fundamental Theroy and Experimental Research • Previous Articles     Next Articles

Analysis of load transfer characteristics of single grouted gravel pile

WEN Shi-qing1, 2, LIU Han-long1, 2, CHEN Yu-min1, 2   

  1. 1. Key Laboratory of Ministry of Education for Geomechanics and Embankment Engineering, Hohai University, Nanjing 210098, China; 2. Geotechnical Research Institute, Hohai University, Nanjing 210098, China
  • Received:2011-07-11 Online:2011-12-10 Published:2011-12-13

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Abstract: Grouted gravel pile is a new technique of piles for reinforcing soft soils. It has been successfully used in construction of projects of expressway and high-speed railway. In order to study the load transfer mechanism of the pile, under the assumption that the compression modulus is obeyed the exponential distribution in reinforced zone, and based on the solution of settlement in half-space under circular bearing plate, the settlements of different parts of grouted gravel pile composite foundation under loads are analyzed; and the formulas of axial force, lateral friction resistance along the grouted gravel pile, and settlement on the top of pile are derived. The practicability of this method is illustrated by a case study. It is shown that the theoretical calculation results are close to the actual measurement results. Therefore the deduced equations are reasonable.

Key words: grouted gravel pile, load transfer, lateral friction resistance, settlement, soil improvement

CLC Number: 

  • TU 473.1
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