Study on evaluation indexes of seismic damage state of wrap-faced reinforced soil retaining walls

The evaluation indexes of seismic damage state can be used to quickly evaluate the performance state of reinforced soil retaining walls (RSRWs) after the earthquake, and can also be used for seismic fragility analysis and performance-based seismic design methods. In view of the lack of seismic damage assessment indexes for wrap-faced RSRWs, exploring the variation rule of dynamic properties and its relationship with the damage degree through shaking table tests. The results show that the deformation mode of the wrap-faced RSRWs changes with the increase of dynamic load intensity, and the maximum total residual displacement is 27.8 mm (2.78% H) when all loading conditions were over. The dynamic characteristics of the structure can characterize the damage state of the structure. With the increase of the dynamic load intensity, the equivalent shear strain increases from 1×10-4 to 2×10-2, and the structure was in an even more dangerous state. Finally, a method for determining the seismic damage assessment indexes of RSRWs based on the distribution law of dynamic characteristics and displacement index was proposed, by which the seismic damage state of wrap-faced RSRWs was defined as three levels and the corresponding displacement index iwas given. © 2024 Chinese Vibration Engineering Society. All rights reserved.