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Settlement calculation for long-short composite piled raft foundation

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Abstract

The mechanism of long-short composite piled raft foundation was discussed. Assuming the relationship between shear stress and shear strain of the surrounding soil was elasto-plastic, shear displacement method was employed to establish the different explicit relational equations between the load and the displacement at the top of pile in either elastic or elasto-plastic period. Then Mylonakis & Gazetas model was introduced to simulate the interaction between two piles or between piles and soil. Considering the effect of cushion, the flexible coefficients of interaction were provided. With the addition of a relevant program, the settlement calculation for long-short composite piled raft foundation was developed which could be used to account for the interaction of piles, soil and cushion. Finally, the calculation method was used to analyze an engineering example. The calculated value of settlement is 10.2 mm, which is close to the observed value 8.8 mm.

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Authors and Affiliations

  1. College of Civil Engineering, Hunan University, Changsha, 410082, China

    Zhao Ming-hua  (赵明华) (Professor), Zhang Ling  (张玲) & Yang Ming-hui  (杨明辉)

Authors
  1. Zhao Ming-hua  (赵明华)
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  2. Zhang Ling  (张玲)
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  3. Yang Ming-hui  (杨明辉)
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Corresponding author

Correspondence to Zhao Ming-hua  (赵明华).

Additional information

Foundation item: Project (50378036) supported by the National Natural Science Foundation of China

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Zhao, Mh., Zhang, L. & Yang, Mh. Settlement calculation for long-short composite piled raft foundation. J Cent. South Univ. Technol. 13, 749–754 (2006). https://doi.org/10.1007/s11771-006-0026-4

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  • DOI: https://doi.org/10.1007/s11771-006-0026-4

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