Comparative Study of Seismic Analysis and Design of Different Types of Bridge Abutments

An essential component of the economics of the entire bridge project is choosing the right kind of abutment given the site characteristics. This study involves the seismic analysis and design of several non-submersible bridge abutment types, such as the box type, counter fort type, C-attached, C-type detached, and gravity type. The abutments under consideration are associated with the active project of the high-level bridge over the Venna River at Jawali, Satara, India (between Sawali and Mhate). Comparative analysis employing IRC requirements of several bridge abutments under dynamic earth pressure, superstructure loading, and live surcharge. The deck slab, girders, and abutments measurements have been specified in accordance with the PWD standard manual for two-lane traffic. STAAD PRO software is used to simulate the chosen bridge abutments in order to test the structural behaviour of eight HFL and OFL load combinations. On the basis of the abutments' design, cost analysis is performed. The box-type abutment has demonstrated reasonably stable structural performance with favourable economic cost effects. The box-type abutment has outperformed other types in a comparison of all abutments based on the bending moment, shear force, and deflection. Despite attracting less bending moment than the box-type abutment, the gravity-type abutment failed the stability test for the seismic situation.