A Hierarchical Single-Surface Model for an Unsaturated Soil-Structure Interface

Peng, Feifei; Li, Xin; Lv, Mengfan; Li, Yong-Hui; Guo, Yongxing

doi:10.1007/s12205-022-1693-x

Cited by 2 publications

(1 citation statement)

References 22 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Researchers have studied the shear characteristics of unsaturated interfaces using suction-and stress-controlled direct shear tests (Borana et al, 2016;Hamid and Miller, 2008;Hossain and Yin, 2012). Peng et al (2022) performed direct shear tests on the interface between unsaturated soil and steel plates, considering the influence of matric suction and interface roughness. However, due to the limited strain range of the direct shear instrument, it cannot accurately reflect the deformation and failure law of the soil-structure interface after long-distance shearing.…”

Section: Introductionmentioning

confidence: 99%

Suction-Controlled Ring Shear Test of the Silt and Concrete Interface

Li,

Yang,

et al. 2024

Preprint

View full text Add to dashboard Cite

The interface of a structural system in the soil is usually unsaturated. A decrease in the shear strength of the soil-structure interface can degrade the structure, especially under humid conditions. Studying the shear characteristics of the silt-concrete interface using a shear apparatus. Suction-controlled ring shear tests were carried out on the silt-concrete interface for three interface roughness values. The influence of the matric suction (s) and interface roughness (R) on the shear strength index of the silt-concrete interface was analyzed. The test results showed that high values of s and R improved the shear strength of the interface, but the result was affected by the net normal stress (NNS). High values of NNS and R improved the strain-hardening characteristics. NNS, s, and R significantly affected the interface shear shrinkage. The internal friction angle of the saturated interface was smaller than that of saturated silt, whereas the opposite occurred in the unsaturated state. The cohesion and internal friction angle of the interface rose with an increase in R, and they were larger than that of silt. A shear strength model of the silt and interface was established.

show abstract