Establishment and finite element analysis of soil load-sinkage model

2018 International Conference on Civil and Hydraulic Engineering

土木建筑工程;水利工程

Feng, Wenxuan^1 ; Ma, Jisheng^2 ; Wu, Dalin^1 ; He, Jan^1

Army Engineering University, Shijiazhuang Collage, 050003, China^1

Xijing University, Xi'an

710123, China^2

关键词: Classical model;    Double exponential;    In-situ experiments;    In-situ test;    Large amounts;    Simulation load;    Terramechanics;    Triaxial compression;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/189/2/022019/pdf
DOI  :  10.1088/1755-1315/189/2/022019

学科分类：土木及结构工程学

来源: IOP

【 摘 要 】

The research of load-sinkage characteristic between soil and vehicle is focused by many scholars in vehicle terramechanics field all the time. The classical models of load-sinkage characteristic between soil and loading plate were established based on a large amount of in-situ tests, but it's sometimes difficult to conduct the in-situ experiments. So the finite element method was used to analyze the load-sinkage characteristic relationship between soil and loading plate based on the triaxial compression experiment date. The finite element calculation result shows that the simulation load-sinkage curve is very close to the curve fitted by classical model. According to the simulation date, a new model, double-exponential equation, to describe the load-sinkage characteristic of soil was proposed, and the R2 ≥ 0.99. The new model was verified by fitting the measured date of wet clay and have a better accuracy compared with other models which is bekker, LSA and Kacigin-Guskeo model.