| Issue |
E3S Web of Conf.
Volume 382, 2023
8th International Conference on Unsaturated Soils (UNSAT 2023)
|
|
|---|---|---|
| Article Number | 15006 | |
| Number of page(s) | 5 | |
| Section | Physical, Numerical and Constitutive Modelling - Part II | |
| DOI | https://doi.org/10.1051/e3sconf/202338215006 | |
| Published online | 24 April 2023 | |
A state dependent constitutive model for unsaturated soil-steel interfaces considering bonding effect
1 Department of Geotechnical Engineering, College of civil engineering, Tongji University, Shanghai 200092, China
2 Department of Civil, Geo and Environmental Engineering, Technical University of Munich, Franz-Langinger-Str. 10, 81245, Munich, Germany
* Corresponding author: lijp2773@tongji.edu.cn
The frictional behaviours between unsaturated soils and structure are controlled mainly by the complex phenomena that develop within a thin soil layer close to the contact area. The constitutive model for soil-structure interfaces (SSI) must be established to predict the performance of related soil-structuresystems accurately. Multi-stage suction-controlled ring shear (RS) tests with three different upper annular platens were carried out on an equal number of statically compacted samples of Shanghai clay under controlled suction states for a given net normal stress. A state dependent constitutive model for unsaturated soil-structure interfaces based on critical state concept considering bonding effect was proposed. In all stress conditions, the tested and predicted results for smooth interface and rough interface are well matched.
© The Authors, published by EDP Sciences, 2023
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