Investigation of an Empirical Creep Constitutive Model of Changsha Red Loam

Author:

Long Lin1,Li Zhida1,Li Yunyu2ORCID

Affiliation:

1. School of Naval Architecture, Ocean and Energy Power Engineering, Wuhan University of Technology, Peace Avenue 1178, Wuhan 430063, China

2. School of Transportation and Logistics Engineering, Wuhan University of Technology, Peace Avenue 1178, Wuhan 430063, China

Abstract

To describe and predict the creep deformation of Changsha red loam (including sandy soil and silty clay) in China, an empirical creep model was proposed based on a laboratory consolidation compression test. Two classical soil layers were sampled from the deep foundation pit site and fourteen samples were designed for tests under different loading conditions. Results show that the deformation process illustrates deceleration and stabilization creep with its vertical load lower than 500 kPa, while it may illustrate acceleration with its vertical load higher than 500 kPa. By analyzing the experimental results, the empirical creep model of the red loam was established. Adopting the model to predict the deformation of red loam shows the prediction curves match the actual situation, proving that the model plays a significant role in predicting the creep deformation of Changsha red loam.

Funder

National Natural Science Foundation of China

Publisher

MDPI AG

Subject

Building and Construction,Civil and Structural Engineering,Architecture

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