Soils and Foundations (Apr 2023)
Rainfall-oriented resilient design for slope system: Resilience-enhancing strategies
Abstract
The concept of resilience has been extensively investigated for various systems to assess and reduce risk in dynamic environments. However, universal rainfall-resilient design criteria for artificially designed and naturally shaped slope systems have rarely been considered. This study proposes a novel methodology for implementing rainfall-resilient design for the slope system under rainfall. This approach incorporates the resilience design philosophy and the stability analysis of the slope system under rainfall. The stability analysis is solved by combining saturated–unsaturated seepage analysis and the Morgenstern–Price method. A design-oriented resilient criterion, including absorption and recovery measures, is proposed for the sound design of the slope system. An illustrative case of rainfall-resilient design for the slope system in the coastal area of Southeast China is presented. The spatial variability of geomaterial properties is considered to identify critical time points for recovery strategies. The resilience characteristics containing the absorption capacity, restorative capacity, and recovery time of eight restorative strategies for the resilience enhancement of the slope system were analyzed. The traditional design criteria were considered for comparison to verify the effectiveness of the proposed rainfall-resilient design method. The rainfall-resilient design can provide critical support to landslide mitigation in the coastal area of Southeast China.
