New Study Results the Secondary Settlement for Vertical Total Stress on Highway Construction built on Soft Ground in the Mekong Delta

TL;DR

This paper investigates the secondary settlement of soft ground under highway construction in the Mekong Delta, highlighting limitations of existing formulas and proposing improved understanding of stress-dependent creep behavior.

Contribution

It introduces a new analysis that accounts for the influence of vertical total stress on secondary settlement in soft soils, addressing limitations of traditional formulas.

Findings

Secondary settlement varies with depth and preconsolidation pressure.

Existing formulas like Raymond and Wahls (1976) are insufficient.

New insights into stress-dependent creep behavior in soft soils.

Abstract

Today, to calculate secondary settlement for vertical total stress by the analytic formula, we often use the formula of Raymond and Wahls (1976) This formula does not reflect that the secondary settlement for vertical total stress depends on the magnitude of the vertical total stress which impact sinkage in soft soil, and changes with depth and preconsolidation pressure. As a result, soft soil creep, resulted from the soft soil's vertical total stress, under road and highway at different depths will be different. The problems were solved in this article.