岩土力学2023，Vol.44Issue(12)：3360-3369,10.DOI:10.16285/j.rsm.2022.1706
加筋稻壳灰改性土动力特性研究
Dynamic characteristics of reinforced rice husk ash modified soil
摘要
Abstract
In order to realize the resource utilization of rice husk ash,rice husk ash was incorporated into the soil for improving the soil strength.Large-scale dynamic triaxial tests were carried out on rice husk ash modified soil.The effects of rice husk ash dosage,dynamic stress amplitude and reinforcement method on the cumulative axial deformation,dynamic stress-strain curve and dynamic elastic modulus of the rice husk ash modified soil were analyzed.The results showed that with the increase of rice husk ash content,the maximum dry density of rice husk ash modified soil decreases and the optimal moisture content increases.The content of rice husk ash has a significant influence on the performance of soil.Under the content of 5％-10％rice husk ash,the cumulative axial deformation of rice husk ash modified soil is low,and the soil strength is better.The dynamic stress amplitude and reinforcement method obviously influence the cumulative axial deformation of rice husk ash modified soil.As the number of cycles increases,the hysteresis loop area of the sample decreases and the dynamic elastic modulus increases gradually.Reinforcement materials can improve the performance of soil.For single-layer reinforcement scenario,grid reinforced soil samples surpass other samples in terms of performances.关键词
稻壳灰/加筋土/大型动三轴试验/轴向累计变形/动应力-动应变曲线/动弹性模量Key words
rice husk ash/reinforced soil/large dynamic triaxial tests/cumulative axial deformation/dynamic stress-strain curve/dynamic elastic modulus分类
土木建筑引用本文复制引用
李丽华,张东方,肖衡林,王翠英,邓永锋..加筋稻壳灰改性土动力特性研究[J].岩土力学,2023,44(12):3360-3369,10.基金项目
国家自然科学基金(No.52278347,No.U22A20232) （No.52278347,No.U22A20232）
湖北省重点研发计划(No.2022BCA059,No.2023BCB1 12) （No.2022BCA059,No.2023BCB1 12）
湖北工业大学杰出人才基金(No.XJ2021000501).This work was supported by the National Natural Science Foundation of China(52278347,U22A20232),the Key Research and Development Program of Hubei Province(2022BCA059,2023BCB112)and the Hubei University of Technology Outstanding Talent Fund Project(XJ2021000501). （No.XJ2021000501）
