Abstract

Based on the inversion of reasonable calculation parameters from an indoor test, Midas GTS was used to establish a three-dimensional numerical model for double-row round anti-slide piles. Under the premise that the pile spacing and row spacing were three times the pile diameter, the influence of plane layout type adopts parallel/quincunx and pile top with/without connecting beam on the pile internal force and soil stress were studied. The study showed that the plane layout mainly affects the bending moment of the anchored section of the pile body. The quincuncial layout can play an anchoring role better than the parallel layout, and the front row piles play a greater performance than the back row piles. The restraint of the pile top connecting beam mainly affects the loaded section of the pile. The connecting beam can reduce the range of soil stress concentration between rows and increase the force integrity of the loaded section as well as the overall rigidity of the structure; among the four types of piles studied in this paper, the quincuncial layout double-row round piles with connecting beam on the top of the pile have better anti-sliding performance.

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