Abstract
Combined composite foundation technology is one of the research directions for dealing with collapsible loess foundation in the northwest region. Under the vertical load of rigid-flexible composite foundation reinforcement, considering the relevant factors of rigid pile, flexible pile, cushion, etc., a FLAC3D finite element model was established for numerical analysis. The results of the research show that the length of rigid piles is the main factor affecting bearing capacity and settlement, and the main function of flexible pile lengths is to improve the strength of shallow soils and eliminate the collapsibility of loess. This paper provides a reference basis for the study of the combined composite foundation mechanism.
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