|Table of Contents|

Impact of soil pressure on horizontal load-bearing properties of row piles basis under slope conditions(PDF)

长安大学学报（自然科学版）[ISSN:1006-6977/CN:61-1281/TN]

Issue:
2025年2期
Page:
126-135
Research Field:
桥梁与隧道工程
Publishing date:

Info

Title:
Impact of soil pressure on horizontal load-bearing properties of row piles basis under slope conditions
Author(s):
YUAN Hua-zhi1; 2; 3;  CHEN Ming-jie1;  ZHAO Kun1;  LI Xu-sheng1;  WANG Zheng-zhen1; 2; 3; WEI Zheng-de1; 2; 3;  CAO Ming4
Keywords:
bridge engineering;  row piles basis;  numerical simulation;  soil pressure;  horizontal load-bearing capacity;  slope condition
PACS:
-
DOI:
10.19721/j.cnki.1671-8879.2025.02.011
Abstract:
Based on the principle of physical similarity and the actual project, the indoor test scene was developed as the equal-scale was 1:80, and the influence of soil pressure on the horizontal bearing capacity of row piles basis under slope condition was analyzed. According to the elastoplastic theory and Mohr-Coulomb criterion, the master-slave contact algorithm was used to set the boundary condition, the method of adaptive meshing was selected, the finite element model of mutual interaction between the row piles basis and the surrounding soil was established. The equal-scale indoor test was verified, and the influences of slope angle, embedded depth and pile spacing on the horizontal load-bearing capacity of row piles were analyzed. The results show that when the slope angle increases from 30° to 60°, the horizontal load-bearing capacity of the pile increases from 2.68 kPa to 3.18 kPa. When the embedded depth increases from 0 to 300 mm, the horizontal load-bearing capacity of the pile increases from 0 to 3.18 kPa. When the pile spacing increases from 150 to 210 mm, the maximum pile bending moment increases from 0.28 N·m to 0.34 N·m. The maximum pile bending moment moves from the point which is 78 mm to the top pile to the other point which is 116 mm to the top pile. When the embedded depth is 300 mm and the slope angle is 60°, the pile bending moment of the pile reaches the maximum value of 0.65 N·m. With the increasing of slope angle, the horizontal load-bearing capacity of pile decreases and the stability decreases. When the embedded depth is larger, the horizontal load-bearing capacity of deep soil is effectively utilized, and the stability enhances. The horizontal load-bearing capacity of row piles are inversely proportional to the pile spacing. With the increasing of pile spacing, the interaction between adjacent piles decreases. The appropriate reduction of pile spacing can effectively improve the overall load-bearing capacity of row piles.4 tabs, 14 figs, 26 refs.

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Last Update: 2025-04-01