The bearing mechanism of bridge pile foundation in high-steep rock slopes is much more complex than that inthe flat. In the basis of theory research and model experiment made by previous scholars, then the software of finite elementmethod is used on numerical analysis in this paper, which systematically discusses the distribution of body force ofpile, the displacement in pile top and situation of pile’s thrusting force distribution caused by the soil (rock) around thepile under the combined load, the negative impact of combined load on pile stability was also discussed, which can guideengineering practice.
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