caa a22 4500 606223541 CHVBK 20210128101139.0 cr unu---uuuuu 210128e20150901xx s 000 0 eng 10.1007/s11204-015-9327-7 doi (NATIONALLICENCE)springer-10.1007/s11204-015-9327-7 Theoretical and Experimental Study on Multi-Scale Mechanical Properties of Soil [Elektronische Daten] [De-luan Feng, Ying-guang Fang] On the basis of their connection characteristics and the ratio of micro-forces and gravity, soil particles are decomposed into matrix particles and reinforcement particles of a certain demarcation size to investigate the mechanical properties of soil at different scales. A soil cell element that can describe the internal material information and particle characteristics of soil is constructed, and a soil cell element model that can characterize the multi-scale mechanical properties of soil is proposed. A series of unconsolidated and undrained triaxial compression tests on unsaturated, remoulded soil is designed to study the multi-scale mechanical properties of soil and to quantitatively determine the strain gradient and intrinsic length scale of soil. The results show that soil yield stress increases with decrease in the size of the reinforcement particles. The effective strain gradient of soil, which is a reflection of the heterogeneous and discontinuous deformation of soil, increases with decrease in the size of the reinforcement particles. The intrinsic length scale of soil, which is a reflection of the particle size effect of soil, increases with increase in the size of the reinforcement particles. The experimental data can be well fitted to the soil cell element model. Springer Science+Business Media New York, 2015 Feng De-luan Civil and Transportation Institute, South China University of Technology, Guangzhou, China aut Fang Ying-guang Civil and Transportation Institute, South China University of Technology, Guangzhou, China aut Soil Mechanics and Foundation Engineering Springer US; http://www.springer-ny.com 52/4(2015-09-01), 189-197 0038-0741 52:4<189 2015 52 11204 https://doi.org/10.1007/s11204-015-9327-7 text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s11204-015-9327-7 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Feng De-luan Civil and Transportation Institute, South China University of Technology, Guangzhou, China aut NATIONALLICENCE 700 1- Fang Ying-guang Civil and Transportation Institute, South China University of Technology, Guangzhou, China aut NATIONALLICENCE 773 0- Soil Mechanics and Foundation Engineering Springer US; http://www.springer-ny.com 52/4(2015-09-01), 189-197 0038-0741 52:4<189 2015 52 11204