Resilience assessment of reinforced concrete buildings in the Indian Himalayan region under flow-type landslides

This study presents a methodology for landslide resilience assessment of reinforced concrete (RC) buildings subjected to flow-type landslides. The methodology includes developing region-specific recovery functions that account for variations in the construction materials and practices, as well as development of fragility curves of archetype buildings using efficient intensity measures while considering the uncertainty in the input parameters related to landslide-induced forces. To this end, 2-, 3-, and 4-story archetype RC buildings, commonly observed in the landslide-prone Indian Himalayan Region, are selected, and their recovery functions are developed for various damage states based on inputs from practicing professionals. The proposed recovery functions can be used to determine the expected functional recovery quantitatively, which will be helpful for decision-makers to take action promptly to start the rescue and recovery process. Further, the effect of community preparedness levels on the landslide resilience of archetype RC buildings is examined through a detailed numerical study.