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Abstract

In view of insufficient consideration of cooperative roadbed and structure deformation, by taking the soft foundation with frame structures in the fill roadbed as the research object, this paper adopted Midas GTS NX finite element analysis software to simulate the pavement settlement and plastic zone distribution of the soft foundation treated by cast-in-place piles. Considering that the stiffness difference between the roadbed and the frame structure can easily result in pavement cracking, a variable stiffness composite foundation treatment optimization scheme was proposed. This scheme coordinated the cooperative settlement and deformation of the roadbed and frame structure, and prevented the development of plastic zones of the soil on both sides of the frame structure, thus reducing the cracking risk of the structural layer of asphalt pavement and decreasing the operation and maintenance costs in the later stage.

Publication Date

9-14-2023

DOI

10.14048/j.issn.1671-2579.2023.04.006

First Page

30

Last Page

36

Submission Date

March 2025

Reference

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