Abstract
Double-row piles are often used for the large-scale landslide control. The frame double-row piles are the common types. Coupling beam is an important component of frame double-row piles. It plays an important role in transferring landslide thrust. A finite element model of landslide was established to evaluate the effect of section size and length of coupling beam on the internal force of double-row piles. It was found that the internal force of double-row piles increased with the length of coupling beam, and found that it was unfavorable for the moment distribution of double-row piles if the section size of coupling beam was too large or small. Therefore, the reasonable length of coupling beam is equal to the height of the piles section. With the reasonable moment distribution of double-row piles, the section size of coupling beam has an optimum value.
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