Experimental study on dynamic shear modulus and damping ratio of remolded loess

Dynamic shear modulus and damping ratio are two important parameters to characterize the dynamic characteristics of soils. In this paper, the influence of dry density and consolidation pressure on dynamic shear modulus and damping ratio of remolded Guyuan loess is studied by resonant column tester. The results show that The maximum damping ratio decreases with the increase of dry density and consolidation confining pressure. Under the same dry density condition, the dynamic shear modulus ratio of loess increases with the increase of confining pressure; the damping ratio decreases with the increase of confining pressure; under the same confining pressure, the dynamic shear modulus ratio of loess increases with the increase of dry density, and the damping ratio decreases with the increase of dry density; the research results can provide basic information for site seismic response analysis and engineering construction in this area. (paper)