3D numerical analysis of force and deformation characteristics of double-row round piles with anchor cables based on field monitoring data

摘要

Based on the engineering geological survey data and the on-site monitoring data of the double-row anti-sliding round piles with anchor cables, a three-dimensional numerical model was established using Midas GTS NX finite element software, and the deformation and internal force distribution rules of the double-row anchor cables were obtained. The load transfer process of the anchor cable double-row pile system under landslide thrust is discussed. The results show that: (1) the finite element calculation results are in good agreement with the on-site monitoring results, indicating the scientific rationality of the finite element calculation results; (2) the force system of the double-row round piles with anchor cables is mainly composed of four parts: the front and rear rows of piles, the soil between the rows, the anchor cables and the deep soil behind the piles; (3) the tie beam and the anchor cables can coordinate the interaction of the double-row piles. this makes the front and back rows of piles more reasonable; (4) the anchor cable set on the top of the pile can effectively limit the pile body deformation, but in engineering applications, attention should be paid to the monitoring of the anchor cable to prevent its failure. the research results can provide references for the reasonable design of double-row anti-slide piles with anchor cables in similar projects.