铁道标准设计2018，Vol.62Issue(1)：84-88,5.DOI:10.13238/j.issn.1004-2954.201703160001
饱和砂土地基应力扩散效应的离心模型试验研究
Study on Foundation Stress Dispersion Effect in Saturated Sand Based on Centrifugal Model Test
摘要
Abstract
The open caisson foundation is more and more widely used in the big-span bridge engineering.In process settlement calculation,the determination of the additional stress distribution is always the focus and challenge.It mainly includes the initial position of stress dispersion,the size of diffusion angle and the influence depth of additional stress.Hence,the study of the properties of stress dispersion of the open caisson foundation is of great significance.The current approach given in the codes and the existing theory cannot be used for the open caisson foundations subjected to vertical loads under some limit conditions.To deal with this problem,the behaviors of settlement in saturated sand under vertical static loading are investigated based on several centrifugal model tests,and the influence scope of additional stress in saturated sand is determined.The test results may provide some references for engineering practices.关键词
离心模型试验/应力扩散/沉井基础/沉降计算/饱和砂土Key words
Centrifugal model test/Stress dispersion/Open caisson foundation/Settlement calculation/Saturated sand分类
建筑与水利引用本文复制引用
董晓朋,马建林,胡中波,李军堂,徐力..饱和砂土地基应力扩散效应的离心模型试验研究[J].铁道标准设计,2018,62(1):84-88,5.基金项目
国家重点研发计划(2016YFC0802203-1) （2016YFC0802203-1）
