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Numerical Analysis for Influence Factors of Pile-Soil Stress Ratio in Highway Soft Foundation

Liu You-ping

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Abstract

The numerical calculation software FLAC3D is taken to build the numerical calculation model for the highway with soft foundation,the spacing of CFG pile and cushion thickness are changed to study the discipline of pile-soil stress ratio,the calculation results show that,(1) with the increase of cushion thickness,the pile-soil stress ratio decreases gradually,the cushion thickness can be set to be 40 cm.(2) with increase of the spacing of CFG pile,the pile-soil stress ratio increases gradually.The obtained results can give guidance for the design of the highway with soft foundation reinforced by CFG pile.

About this research paper

What this paper is about

The numerical calculation software FLAC3D is taken to build the numerical calculation model for the highway with soft foundation,the spacing of CFG pile and cushion thickness are changed to study the discipline of pile-soil stress ratio,the calculation results show that,(1) with the increase of cushion thickness,the pile-soil stress ratio decreases gradually,the cushion thickness can be set to be 40 cm.(2) with increase of the spacing of CFG pile,the pile-soil stress ratio increases gradually.The obtained results can give guidance for the design of the highway with soft foundation reinforced by CFG pile.

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Available abstract

The numerical calculation software FLAC3D is taken to build the numerical calculation model for the highway with soft foundation,the spacing of CFG pile and cushion thickness are changed to study the discipline of pile-soil stress ratio,the calculation results show that,(1) with the increase of cushion thickness,the pile-soil stress ratio decreases gradually,the cushion thickness can be set to be 40 cm.(2) with increase of the spacing of CFG pile,the pile-soil stress ratio increases gradually.The obtained results can give guidance for the design of the highway with soft foundation reinforced by CFG pile.

Key concepts: Cushion, Pile, Foundation (evidence), Geotechnical engineering, Structural engineering, Stress (linguistics), Engineering, Numerical analysis

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