摘要
为了研究不同孔隙率下纤维土无侧限抗压强度的影响规律,以孔隙率、纤维长度、纤维掺量作为试验变量,基于单因素试验的结果,运用BBD响应面试验设计方法进行无侧限抗压强度试验,建立了不同变量与响应值的拟合方程式。试验结果表明:当纤维长度为9mm、纤维掺量为3‰、孔隙率为0.4时,纤维增强黏性土体无侧限抗压强度效应最大,且纤维掺量与纤维长度、孔隙率与纤维长度之间有显著的交互作用。研究成果可以为纤维土在路基工程、基础工程等实际工程中的设计与施工提供参考。
To study the influence of unconfined compressive strength of fiber soil with different porosity,the porosity,fiber length and fiber content were taken as the test variables.According to the results of single factor experiment,BBD response surface experiment design method was employed to conduct the unconfined compressive strength tests,and fitting equations of different variables and the response values were established.Test results show that fiber reinforced viscous effects of unconfined compressive strength of the soil is the largest when the fiber length is 9 mm,fiber content is 3‰ and fiber soil porosity is 0.4.Obvious interaction between fiber length and porosity is observed.The results may provide reference for fiber soil engineering application,such as sub grade engineering,foundation engineering design and construction.
作者
宫亚峰
申杨凡
谭国金
韩春鹏
何钰龙
GONG Ya- feng;SHEN Yang- fan;TAN Guo-jin;HAN Chun- peng;HE Yu-long(College of Transportation, J ilin University, Changchun 130022, China;College of Civil Engineering, Northest Forestry University, Harbin 150040, China)
出处
《吉林大学学报（工学版）》
EI
CAS
CSCD
北大核心
2018年第3期712-719,共8页
Journal of Jilin University:Engineering and Technology Edition
基金
国家自然科学基金项目(51478203)
吉林省科技厅项目(20140520135H)
中央高校基本科研业务费专项资金项目(451170306069)
关键词
道路工程
无侧限抗压强度
响应面法
孔隙率
纤维长度
纤维掺量
road engineering
unconfined compressive strength
response surface method
porosity
fiber length
fiber content
