Designing and mechanical simulation analysis of grid-earth-rock emergency pavement slab

Abstract

On the basis of the structure of grid-earth-rock, fiberglass reinforced epoxy resin, a kind of composite material, is adopted to prepare the emergency pavement slab for road rapid repair with the purpose of disaster relief. According to the structure, material parameter, application environment and actual conditions of emergency pavement slab, on the premise of the “partial safety” design principle, a finite element model which based on the theory of elastic mechanics is established with model assumptions. Stress states of emergency pavement slab in the three most unfavorable conditions are analyzed with the help of ABAQUS to verify the safety and reliability of the slab's structural strength. The results indicate that the maximum tensile stress, the maximum compressive stress and the maximum shearing stress, as well as the maximum vertical deformation withstood by the system of emergency pavement slab are in the strength range of material. The strength of emergency pavement slab meets the requirement of material and traffic load. The slab is applicable to engineering practices.