Stability Analysis of Trench Wall for Diaphragm Wall in Ultra-Deep Circular Foundation Pit: A Comprehensive Investigation

Circular diaphragm walls are increasingly being used in ultra-deep foundation pits due to their arch-shaped bearing system, which provides reasonable structural support. The trench walls that form the circular ground connection wall are typically double-angled in shape, and their stability analysis...

Full description

Saved in:
Bibliographic Details
Published in:Applied sciences 2023-11, Vol.13 (21), p.12037
Main Authors: Xu, Qianwei, Xie, Jinli, Sun, Zili, Lu, Linhai, Yu, Hangfei
Format: Article
Language:English
Subjects:
circular diaphragm wall
Construction accidents & safety
Equilibrium
Kinematics
Shear strength
stability of trench wall
theoretical calculation
Underground construction
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Circular diaphragm walls are increasingly being used in ultra-deep foundation pits due to their arch-shaped bearing system, which provides reasonable structural support. The trench walls that form the circular ground connection wall are typically double-angled in shape, and their stability analysis remains a challenge. In this paper, an instability model for double-angled trench walls based on 3D sliding body analysis is proposed. The objective of this paper is to determine the minimum amount of slurry needed to maintain the integrity of the trench wall. The results show that the center of symmetry on the inside of the wall is the most vulnerable to damage, followed by the inside corner, and then the center and corner on the outside. The consideration of sliding bodies in overall and local stability calculations for double-angled trench wall shapes can provide a reasonable stability assessment.
ISSN:2076-3417
2076-3417
DOI:10.3390/app132112037