Research Progress of Fiber Reinforced Soil

Abstract

Based on the research results of fiber reinforced soil in recent decades, the mechanical properties and constitutive models of fiber reinforced soil were introduced. A large number of experiments on the engineering properties of fiber reinforced soil show that fiber reinforced soil can effectively improve the shear, tensile and compressive strength of soil and enhance the toughness of soil. The fiber content, fiber type and fiber orientation are the main factors affecting the strength and deformation of fiber reinforced soil. In addition, some research results on fiber corrosion are also introduced. In terms of constitutive model, the mechanical equilibrium model, energy equalization model, statistical model, elastic-plastic model and two-phase constitutive model of fiber-reinforced soil are introduced. Finally, the research status of fiber reinforced soil is summarized, and the future research direction and emphasis are put forward. It mainly includes the constitutive model that accurately reflects the stress-strain relationship of fiber-reinforced soil, the large-scale model experiment, the microscopic study of the interaction mechanism of fiber-soil interface, the study of the dynamics characteristics, and the systematic study of the special fiber-reinforced soil.