Study on the Rational Form of Pile-anchor Retaining Structures to a Deep Box Culvert Pit with Large External Surface Load
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Abstract:
In this paper, the structural force status of a pile-anchor retained deep box culvert pit with a large external surface load was simulated using the finite element method. Four retaining schemes were studied, and the force and loading process of the supporting structure under each scheme were compared to investigate the impacts of different stress characteristics on the supporting structure. The results showed that the surface load can cause a large lateral stress on the upper pit, and therefore the first-level cable should be strengthened and set on the pile top, which can effectively limit the displacement and inner force of the pile. The double-row pile did not improve the inner force of the pile, thus it was suggested not to be applied. Moreover, the anchor pile was also not suggested due to that it is weakly constrained and translational displacement occurs with the horizontal pull from the cable force.
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