长江科学院院报2011，Vol.28Issue(5)：42-45,4.
硬壳层软土地基竖向附加应力分布研究
Vertical Additional Stress of Soft Soil Foundation with Upper Crust
摘要
Abstract
The distribution of vertical additional stress of soft soil foundation with upper hard crust under uniform strip load is numerically simulated by finite element method. Through the simulation, the coefficients of interlayer vertical additional stress with different ratios of crust thickness to load width and ratios of crust modulus to soft soil modulus are obtained, and tables with these coefficients are given for reference. Furthermore, an approximate function of these coefficients versus ratio of crust thickness to load width and ratio of crust modulus to soft soil is presented using binary regression analysis. Finally, a calculation formula for vertical stress of soft soil foundation with upper hard crust is deduced based on the concept of equivalent depth, and the validity of this formula is verified by case calculation.关键词
硬壳层/软土地基/竖向附加应力/沉降/二元回归分析Key words
crust/ soft soil foundation/ vertical additional stress/ settlement/ binary regression analysis分类
建筑与水利引用本文复制引用
张军辉,江伟唯,郑健龙..硬壳层软土地基竖向附加应力分布研究[J].长江科学院院报,2011,28(5):42-45,4.基金项目
交通部两部交通科技项目(2009-318-000-062) （2009-318-000-062）
交通部西部交通科技项目应用基础研究项目(2009-319-825-090) （2009-319-825-090）
湖南省教育厅项目(08C100) （08C100）
长沙理工大学公路工程省部共建教育部重点实验室开放基金资助项目(kfj090105) （kfj090105）
