铁道科学与工程学报2013，Vol.10Issue(3)：33-36,4.
高速铁路砂质板岩粗粒土填料蠕变特性试验研究
Creep tests of sandy slate coarse-grained fillings in high-speed railway
摘要
Abstract
By using the large uniaxial consolidometer,the compression creep test under low confining stress conditions (including 50,100,200,400 and 800 kPa) was conducted to investigate the creep behavior of the embankment of sandy slate coarse-grained soil fillings.Based on the creep theory of coarse-grained soil,the characteristic of the creep curve was analyzed to determine the initial calculation time of creep,and the common creep constitutive models were selected to obtain the model parameters of sandy slate coarse-grained soil with 95％ relative compactness through modified Gauss-Newton method.The results show that the sandy slate coarse-grained soil presents a degenerative creep property of elastic deformation,stable creep and non viscous flow and H-K-K model is more precise in describing the creep behavior of sandy slate coarse-grained soil fillings.关键词
高速铁路/粗粒土/蠕变/参数识别Key words
high-speed railway/ coarse grained soil/ creep / parametric recognition分类
建筑与水利引用本文复制引用
聂志红,刘群,宋晓东,王翔..高速铁路砂质板岩粗粒土填料蠕变特性试验研究[J].铁道科学与工程学报,2013,10(3):33-36,4.基金项目
铁道部科技研究开发计划项目(2010G018-B-3-2) （2010G018-B-3-2）
