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Friction Characteristics Between Marine Clay and Construction Materials

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Structure-soil interface friction characteristics is of importance to investigate the interaction between engineering structures and soils,especially for offshore structures.The interface friction behavior between marine clay and structural materials with different roughness was studied in this paper by using 3D optical scanning tests,a modified direct shear device and numerical simulation.Re-lationships between the surface roughness of structures,water content and interface friction angle were presented by model tests.The increase of water contents decreased the interface friction angles.For interfaces with different roughness,the interface friction angles will be smaller than that of the soil when the water content exceeds a certain value.The roughness of the interface and the water content of the soil are mutually coupled to influence the coefficient of friction(COF).This paper proposed a Finite Element Method(FEM)to simulate the interface direct shear tests of structures with different roughness.The surface models with different roughness are established based on the structure data obtained by 3D scanning.The Coupled Eulerian-Lagrangian(CEL)approach was employed to analyse soils sheared by irregular surfaces.The interface behavior for interfaces with different roughness under cyclic shear stresses was analyzed by FEM.

marine clayconstruction materialinterface friction behaviorsurface roughnessFinite Element Method

KOU Hailei、HUANG Jiaming、CHENG Yang

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College of Engineering,Ocean University of China,Qingdao 266100,China

Fourth Division,Organization Department of the CPC Qingdao Municipal Committee,Qingdao 266100,China

National Natural Science Foundations of ChinaTaishan Scholars Program of Shandong Province,ChinaShandong Provincial Key Research and Development Plan,China

52171282tsqn2023060982021ZLGX04

2024

10.1007/s11802-024-5474-7

中国海洋大学学报(自然科学英文版)
中国海洋大学

中国海洋大学学报(自然科学英文版)

CSTPCD
影响因子：0.268
ISSN：1672-5182
年,卷(期)：2024.23(2)
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