What is it about?
Small-scale shear tests are difficult to accurately reveal complex mechanical properties such as shear expansion and contraction during the shear process. In this study, shear tests on the contact surface between spoil mixture and concrete were conducted using a large-scale direct shear apparatus, focusing on the effect of roughness on the shear mechanical properties of the contact surface. Based on these test results, a state-dependent hyperbolic model of the interface considering the roughness was established.
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Why is it important?
The state-dependent hyperbolic model was established in this study. Through verification, it was found that the model can better reflect the shear stress-strain relationship of the interface under different roughness conditions, and the model has certain applicability.
Perspectives
Our research findings have enriched the theory and practical results of the shear mechanical properties of contact surfaces between soil and rigid structures, supporting relevant engineering design, construction, and related research.
Lei Zhang
School of Civil Engineering, Central South University
Read the Original
This page is a summary of: Research on the State-Dependent Hyperbolic Model of the Interface between Spoil Mixture and Concrete, Journal of Testing and Evaluation, April 2024, ASTM International,
DOI: 10.1520/jte20230567.
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