What question did this study set out to answer?

The study aims to find the best construction sequence to reduce deformation in subway structures near deep foundation pits.

April 3, 2026Scientific ReportsOpen Access

Numerical analysis and optimization of the impact of complex foundation pit construction on the deformation of adjacent subway structures

View Full Paper

Ask AI

Bookmark

Authors

Numerical analysis identifies optimal construction sequence to minimize subway deformation during excavation, suggesting improved practices.

The study aims to find the best construction sequence to reduce deformation in subway structures near deep foundation pits.
Developed a three-dimensional finite element model using MIDAS GTS NX software.
Employed the Mohr-Coulomb model to simulate soil behavior based on site investigation data.
Simulated ten different construction scenarios with varying culvert directions and excavation sequences.
Conducted a quantitative comparative analysis of outcomes across scenarios.
Scenario 3 proved optimal, resulting in a maximum tunnel settlement of 1.875 mm.
Scenario 7, the least favorable, caused a settlement of 1.961 mm.
The optimal sequence reduced maximum settlement by 4.4% compared to the worst-case scenario.

Sun et al. (2026) studied this question.

View Full Paper

Ask AI

Bookmark

Numerical analysis identifies optimal construction sequence to minimize subway deformation during excavation, suggesting improved practices.