路基工程Issue(6)：31-36,6.DOI:10.13379/j.issn.1003-8825.202307009
高铁荷载下路基AB组填料动剪切模量与沉降特性分析
Analysis on Dynamic Shear Modulus and Settlement Characteristics of Subgrade AB Group Filler under High-speed Railway Loading
摘要
Abstract
In order to analyze the dynamic shear modulus and settlement characteristics of subgrade group AB filler under high-speed train loading,taking the subgrade filling project of Fuzhou-Pingtan railway as the research background,cyclic torsional shear tests were carried out on group AB filler of Fuzhou by using resonant column to study the dynamic shear modulus variation law of group AB filler under different confining pressures and dynamic shear stress.An attenuation model of dynamic shear modulus ratio considering confining pressure and frequency impact is established.Based on the dynamic shear modulus obtained from the test,the ABAQUS numerical model is used to analyze the subgrade settlement.The results show that the subgrade settlement increases with the accumulation of cyclic loads and eventually tends to be stable,showing a nonlinear relationship as a whole.关键词
高铁荷载/路基AB组填料/动剪切模量/衰减模型/动力响应特性/竖向沉降Key words
high-speed railway load/subgrade AB group filler/dynamic shear modulus/attenuation model/dynamic response characteristics/vertical settlement分类
建筑与水利引用本文复制引用
黄博..高铁荷载下路基AB组填料动剪切模量与沉降特性分析[J].路基工程,2023,(6):31-36,6.基金项目
国家自然科学基金资助项目(11662007) （11662007）
