Open AccessStudy on seismic residual deformation test of reinforced soil
Author(s) -
Bing He,
Jianming Zhao,
Qiwang Liu,
Xiaosheng Liu,
Kaibin Zhu,
Long Wang,
Yuxuan Yang,
Zhiyong Yang
Publication year - 2020
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/794/1/012051
Subject(s) - consolidation (business) , geotechnical engineering , triaxial shear test , overburden pressure , materials science , residual , deformation (meteorology) , reinforcement , direct shear test , shear (geology) , composite material , geology , mathematics , accounting , algorithm , business
The reinforced material can increase the stability of soil material, improve its shear strength and reduce the residual deformation. In this paper, the vibration triaxial tests of coarse-grained soil under different confining pressure, consolidation ratio and dynamic stress are carried out by using the 100t electro-hydraulic servo large-scale static and dynamic triaxial testing machine of Institute of Water Resources and Hydropower Research. The results show that the average reduction ratio of the axial residual deformation of reinforced soil to that of unreinforced soil is 40%-50%, and the average reduction of the volumetric residual deformation is 30-40% It has a good inhibitory effect. With the increase of confining pressure, consolidation ratio and dynamic shear stress ratio, the axial residual deformation and volumetric residual deformation of reinforced soil increase in varying degrees. The reinforcement effect of geogrid material on soil sample under different conditions is analyzed. The lower the dynamic shear stress ratio and the higher the consolidation ratio, the better the reinforcement effect. The lower the confining pressure is, the lower the reduction ratio of the reinforcement to the volumetric strain is.