Force based Design Approach for Seismic Evaluation of Padma Multipurpose Bridge Pier at Different Performance Levels

The Padma Multipurpose Bridge (PMB) is one of the biggest megaprojects Bangladesh connecting third country with capital city, Dhaka. infrastructure expected to produce considerable uplift on nation’s transport system, national and regional economy, employment, household income, ultimately, poverty reduction. From construction river management points view, it most difficult engineering innovation-intenstive project in world. Hence required analytical, computational experimental studies. In this work, a 3D Finite Element (FE) model actual PMB containing single (6x150m) 900m modules has been developed MIDAS Civil, commercial computer program for bridges. P-y soil spring following API guideline conform flexible support system bridge pier. Following BNBC 2020, bridge's performance evaluated 475-year, 975 years, 2475-year return periods Service Level, Design Basis Maximum Credible Earthquake (MCE), respectively. forced based design shows that pier reached only 28% 36% its axial shear capacity respectively an earthquake period 2475 years. On other hand, maximum 41% total same seismic level.