Parameter analysis of coupling characteristics and load‐sharing law of arch‐chord coupled anti‐sliding structure

Abstract

Arch‐chord coupled anti‐sliding structure is a new type of anti‐sliding structure composed of multiple single piles in a specific form. The coupling effect of pile and soil is the most important key point. In this article, the factors that affect the coupling bearing capacity and load sharing ratio of the arch‐chord coupled anti‐sliding structure are screened out, and the rule that the evaluation index is affected by each factor is analyzed. The results show that, with the increase of pile diameter, the value of structural coupling ultimate bearing capacity increases exponentially, but the growth rate slows down gradually. With the increase of pile spacing, the value of structural coupling ultimate bearing capacity decreases. With the increase of soil cohesion around the pile, the value of structural coupling ultimate bearing capacity increases linearly. The coupling ultimate bearing capacity and load sharing ratio of the anti‐sliding structure are the most sensitive to the change of the internal friction angle of the soil around the pile, and the pile diameter has little effect on the evaluation indexes.

Optimization of beam parameters for coupling beam pile structure foundations under vertical loading

“…The coupling beam structure is widely used in pile foundations. The coupling beam at the top of the anti-slip pile can connect the piles at different locations into a whole structure [8][9][10] so that the piles are subjected to uniform forces and deformations and enhance the pile-soil interaction. Structures with pile tops connected to coupling beams are also found in road foundations, [11][12][13] which can effectively inhibit lateral deformation of the embankment and increase its stability.…”