岩土力学2024，Vol.45Issue(1)：226-234,9.DOI:10.16285/j.rsm.2023.0088
加载与干湿循环作用下土石混合料蠕变特性试验
Creep characteristics test of soil-rock mixture subjected to loading and dry-wet cycles
摘要
Abstract
The study focused on investigating the influence of dry density and load level on the wetting creep deformation of soil-rock mixture.A total of 9 groups of compression creep tests were conducted on the soil-rock mixture under a dry-wet cycle.The results revealed that the wetting creep deformation of the soil-rock mixture increased with higher load levels and decreased significantly with increasing dry density.However,as the dry density further increased,the decrease in wetting creep deformation became less pronounced.The relationship between wetting creep deformation and the logarithm of the number of dry-wet cycles followed a linear development pattern for the soil-rock mixture under the dry-wet cycle conditions.The initial wetting strain and wetting creep rate were found to have power function distribution relationships with the load level and dry density.Based on these findings,an empirical model for the dry-wet cycle creep behavior of the soil-rock mixture was proposed.This model takes into consideration different dry densities and load levels,providing a framework for predicting and understanding the creep deformation of the soil-rock mixture under such conditions.关键词
填筑土/土石混合料/干湿循环/蠕变/干密度Key words
filling soil/soil-rock mixture/dry-wet cycles/creep/dry density分类
建筑与水利引用本文复制引用
孙晨峰,王步雪岩,钱建固,王家超,张甲峰..加载与干湿循环作用下土石混合料蠕变特性试验[J].岩土力学,2024,45(1):226-234,9.基金项目
国家自然科学基金资助项目(No.51238009) （No.51238009）
中央高校基本科研业务费专项资金(No.22120190220).This work was supported by the National Natural Science Foundation of China(51238009)and the Fundamental Research Funds for the Central Universities(22120190220). （No.22120190220）
