摘要
为研究山区高等级公路粗粒料高路堤填筑及质量控制关键技术,采用有限元强度折减法对综合位移失稳判据分析粗粒料路堤稳定的适用性及参数影响情况。结果表明,综合位移失稳判据在粗粒料路堤稳定有限元强度折减分析中是可行的,基于综合位移失稳判据所得的安全系数随剪胀角的增大而增大,随荷载分级次数的增加而增大,随折减范围的减小而增大。
Relying on the project of“Key Technologies of Embankment Construction and Quality Control of the High-grade Highway Filled by Coarse Granular Materials in the Mountains”,the finite element strength reduction method is used to analyze the applicability of comprehensive displacement instability criterion and its influence parameters.The results show that the comprehensive displacement instability criterion is feasible in the finite element strength reduction analysis of coarse granular embankment stability.The safety factor based on the criterion increases with the increase of dilation angle and the load classification times,while increases with the decrease of reduction range.
作者
凌立鑫
丰土根
LING Lixin;FENG Tugen(JSTI GROUP Co.,Ltd.,Nanjing 210000,China;Geotechnical Research Institute of Hohai University,Nanjing 210000,China)
出处
《交通科技》
2023年第3期20-23,共4页
Transportation Science & Technology
基金
吉林省交通科技研发项目(山区高等级公路建设关键技术研究)资助。
关键词
粗粒料
强度折减
失稳判据
剪胀角
荷载分级
折减范围
安全系数
coarse granular material
strength reduction
instability criterion
dilation angle
load classification
reduction range
safety factor
