路基工程Issue(2)：74-78,5.DOI:10.13379/j.issn.1003-8825.202406007
长期循环荷载作用下粗粒土变形特性试验研究
Experimental Study on Deformation Characteristics of Coarse-grained Soil under the Action of Long-term Cyclic Loading
王爱爱 1张小强 1胡小磊 1朱永康2
作者信息
- 1. 中交建筑集团有限公司,北京 100088||中交建筑集团东南建设有限公司,福建厦门 361100
- 2. 中南大学土木工程学院,长沙 410075
- 折叠
摘要
Abstract
MTS high frequency fatigue testing machine was used to conduct vibration cycle test and,directing at gravel and crushed stone,the two kinds of typical coarse-grained soil filler on the construction site of subgrade filling along Jiaozuo—Pingdingshan Highway,the characteristics of plastic and elastic deformation of the coarse-grained soil filler under the action of different dynamic stress were analyzed.The result shows that,the axial accumulated strain of the coarse-grained soil increases logarithmically with the number of loading cycles,and the final axial accumulated strain increases linearly with the increase of dynamic stress;the gravel is more prone to creep with larger creep value,thus the gravel is of better capacity to resist to plastic deformation,and of more stable dynamic elastic modulus under the action of long-term vibration load.关键词
路基工程/粗粒土/长期循环荷载/动应力/累积塑性应变/动弹性模量Key words
subgrade engineering/coarse-grained soil/long-term cyclic loading/dynamic stress/accumulated plastic strain/dynamic elastic modulus分类
交通工程引用本文复制引用
王爱爱,张小强,胡小磊,朱永康..长期循环荷载作用下粗粒土变形特性试验研究[J].路基工程,2025,(2):74-78,5.
