Analysis of Polymer-silt Soil Shear Properties Based on Three-dimensional Reconstruction of Interfacial Morphology

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Analysis of Polymer-silt Soil Shear Properties Based on Three-dimensional Reconstruction of Interfacial Morphology

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[1]ZHANG Chao,ZHANG Lei,XIA Yangyang,et al.Analysis of Polymer-silt Soil Shear Properties Based on Three-dimensional Reconstruction of Interfacial Morphology[J].Journal of Zhengzhou University (Engineering Science),2026,47(5):102-110.[doi:10.13705/j.issn.1671-6833.2025.05.010]

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Journal of Zhengzhou University (Engineering Science)[ISSN 1671-6833/CN 41-1339/T] Volume: 47 Number of periods: 2026 Issue 5 Page number: 102-110 Column: Public date: 2026-09-09

Title:: Analysis of Polymer-silt Soil Shear Properties Based on Three-dimensional Reconstruction of Interfacial Morphology

Author(s):: ZHANG Chao^1,2,3,4, ZHANG Lei^1,2,3, XIA Yangyang^1,2,3, WANG Cuixia^1,2,3, LIU Quanhong⁵, FANG Hongyuan^1,2,3,4,Timon Rabczuk⁶, WANG Fuming^1,2,3,4; 1. School of Water Conservancy and Transportation, Zhengzhou University, Zhengzhou 450001, China; 2. National Local Joint Engineering Laboratory of Major Infrastructure Testing and Rehabilitation Technology, Zhengzhou 450001, China; 3. Collaborative Innovation Center for disaster prevention and control of Underground Engineering Jointly Built by Provinces and Ministries, Zhengzhou 450001, China;4. Yellow River Laboratory ( Henan) , Zhengzhou 450001, China; 5. School of Building Engineering and Intelligent Construction, Henan Open University, Zhengzhou 450008, China; 6. Institute of Structural Mechanics, Bauhaus University Weimar, Weimar 99425, Germany

Keywords:: polymer-silt soil; interfacial shear; three-dimensional laser scanning; interfacial morphology; numerical simulation

CLC:: TU432

DOI:: 10.13705/j.issn.1671-6833.2025.05.010

Abstract:: To investigate the influence mechanism of polymer density on the contact morphology and interfacial shear properties of the polymer‑silt interface, a combined method of interface nondestructive separation and three‑dimensional laser scanning was employed, and scanning tests on the three‑dimensional topographic features of the polymer‑silt interface were carried out, by which the interfacial roughness parameters under different densities were obtained. In conjunction with interfacial direct shear tests, the variations of interfacial roughness parameters, interfacial shear stress‑displacement relationships, interfacial shear mechanical strength parameters, and the correlation between roughness parameters and interfacial shear strength under the influence of different polymer densities were studied. Based on this, a stochastic three‑dimensional rough interface finite element model was established using COMSOL software, and the shear damage mechanism of the polymer‑silt interface under different interfacial roughness levels was further explored. The results showed that the finite element numerical model based on three‑dimensional interface reconstruction could be used to accurately predict the shear stress‑displacement relationships of the polymer‑silt interface at different densities, and the primary damage characteristic of the polymer‑silt interface under direct shear loading was manifested as stress concentration formed at interfacial asperities, with higher polymer density leading to more asperities and more pronounced stress concentration. Both the interfacial roughness and shear strength of the polymer‑silt interface were increased with increasing polymer density, and a linear relationship was satisfied between the interfacial roughness and shear strength of the polymer‑silt interface.

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Last Update: 2026-09-07