Seismic Response of RC Bridge considering scour effect: A Case Study of Kathmandu Valley

Abstract Bridge foundation scour is one of the major problems for bridges in Nepal. Kathmandu Valley, which main economic hub and capital Nepal lies a seismically active zone. In this study, bridge spanning over Bagmati River Valley studied as reference to assess seismic response typical affected by scouring. Modal analysis revealed becomes more flexible when depth 2 m considered. A series pushover conducted on pier with varying level damage. It observed that increasing damages are transferred from piers piles. The nonlinear time history scouring could have beneficial impact at cost Scouring also increased bearing responses relative displacement between adjacent decks, abutment deck thus probability failure unseating, respectively. Moreover, frequent pounding occurrences were leading severe localized joints.