Study on Constitutive Model of Air-foam-Treated Lightweight Soil Based on Static Triaxial Test

2nd International Symposium on Resource Exploration and Environmental Science

生态环境科学

Gu, Wenjie^1,2,3 ; He, Guojie^3 ; Zhu, Jiankai^3 ; Chen, Jinfeng^3

College of Civil Engineering, Chongqing University, Chongqing

400045, China^1

Key Laboratory of New Technology for Construction of Cities in Mountain Area, Chongqing University, Ministry of Education, Chongqing

400045, China^2

Department of Engineering Management, Logistical Engineering University of PLA, Chongqing

401311, China^3

关键词: Design parameters;    Elastic -plastic models;    Engineering applications;    Filling technologies;    Foamed cement bankings;    Soft foundation treatment;    Strain and stress;    Stress-strain relationships;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/170/2/022152/pdf
DOI  :  10.1088/1755-1315/170/2/022152

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

Foamed Cement Banking filling technology is one of the most effective methods in soft foundation treatments, such as the bumping at joints of a bridge-road, the different settlement of subgrade broadening and the stability problem of a high-filling embankment. To study on the characteristics of stress and strain for air-foam-treated lightweight soil, specimens were prepared at an optimized mixing ratio, and triaxial tests were conducted for strain and stress fitting. An ideal elastic-plastic model was used to simplify the relationship of strain and stress in an engineering sense, plus numerical simulation. The research results have great significance for addressing the issues of the stress-strain relationship, selecting design parameters and guiding engineering application with respect to air-foam-treated lightweight soil.