人民长江2026，Vol.57Issue(5)：197-203,7.DOI:10.16232/j.cnki.1001-4179.2026.05.023
波浪荷载纯圆应力路径下海床黏土动力特性研究
Study on dynamic characteristics of seabed clay under pure circular stress path induced by wave loading
摘要
Abstract
Current studies on the effect of wave loads on saturated silty clay are still mainly based on laboratory dynamic triaxial tests,which cannot truly reflect the continuous rotation of the principal stress axes induced by wave loads.In this study,a dynamic hollow cylindrical apparatus(DHCA)was used to carry out cyclic shear tests and post-cyclic static tests on Taizhou silty clay under different cyclic stress ratios(CSRs)and cyclic numbers.The cyclic characteristics,including pore water pressure develop-ment,stress-strain relationship,backbone curve,and stiffness degradation,were analyzed.A relationship function between the backbone curve and the number of cycles was established.Furthermore,under the same CSR condition,the shear strength after wave loading was positively correlated with the number of cycles.The shear modulus E50 increased with the number of cycles,indi-cating possible stiffness strenthening rather than the stiffness softening observed in most previous triaxial tests.This study provides new experimental evidence and theoretical references for evaluating the engineering properties of saturated silty clay under wave loading.关键词
淤泥质粉质黏土/波浪荷载/动力特性/动态空心圆柱扭剪仪/纯圆应力路径/沿海地区Key words
saturated silty clay/wave load/dynamic characteristics/dynamic hollow cylindrical apparatus(DHCA)/pure circular stress path/coastal areas分类
建筑与水利引用本文复制引用
谢勇,郑谞,陈军,魏朋飞..波浪荷载纯圆应力路径下海床黏土动力特性研究[J].人民长江,2026,57(5):197-203,7.基金项目
国家自然科学基金地区联合基金项目(U2006225) （U2006225）
