岩土力学2025，Vol.46Issue(2)：527-538,12.DOI:10.16285/j.rsm.2024.00118
初始固结角度对饱和粉质土应变发展的影响
Effect of initial consolidation inclination on strain development in saturated silty soil
摘要
Abstract
This study investigates the strain development in saturated silty soil from Yellow River under varying initial consolidation inclination angles ζ by principle stress rotation tests.The results indicate that distinct patterns in axial,circumferential and torsional shear strains show the influence of ζ on the mechanical response of silty soil.Notably,the axial strain exhibits compressive behaviour at ζ=90° during the first cycle,while the circumferential strain displays tensile behaviour.Anisotropy initiates at around ζ=90° and ζ=60° for other ζ angles.Different values of ζ exhibit stabilization trends in strain fluctuations,with ζ=90° and ζ=75° showing intriguing similarities.The case of ζ=45° is distinctive,exhibiting the highest fluctuation and strain amplitude.Torsional shear strain similarities are observed among most ζ angles,except for ζ=90° and ζ=60°.Volumetric strain highlights the significant impact of consolidation angle inclination on anisotropic characteristics.As the initial solidification angle increases,the hysteresis curve shifts left,indicating cyclic creep characteristics,with negligible shear strain observed for ζ=60°.As the cycle period increases,the hysteresis loop contracts,indicating continuous strengthening and eventual stabilization of shear stiffness.This comprehensive study provides valuable insights into the complex behaviour of saturated silty soil under rotational stress conditions,highlighting the role of initial consolidation inclination angles in shaping its mechanical response.关键词
空心圆柱扭剪仪/主应力轴旋转/初始固结角度/粉质土/应力路径Key words
hollow cylindrical apparatus/principal stress rotation/initial consolidation angle/silty soil/stress path分类
建筑与水利引用本文复制引用
FARHAD Jamil,曾长女,马媛,SHARAFAT Ali..初始固结角度对饱和粉质土应变发展的影响[J].岩土力学,2025,46(2):527-538,12.基金项目
河南省科技联合基金(No.222103810075) （No.222103810075）
河南工业大学创新基金计划(No.2022ZKCJ07). This work was supported by the Henan Province Joint Fund Project of Science and Technology(222103810075)and the Innovative Funds Plan of Henan University of Technology(2022ZKCJ07). （No.2022ZKCJ07）
