ABSTRACT

The most crucial components of transportation systems, bridges are susceptible to failure when structural flaws go undetected. Assessing the seismic susceptibility of existing structures has received a lot of attention in the wake of recent devastating and large-scale earthquakes. Bridge analysis and design are quite sophisticated, however, nowadays, earthquake durability and serviceability are increasingly important. A sizable portion of the bridges built across the world was created at a time when the seismic safety regulations for bridges either didn’t exist or were insufficient by today’s standards. In addition, aging and growing vehicle loads in volume and magnitude are degrading a number of India’s older bridges. Today’s girder-type bridge network is utilized extensively all over the world, and it is also frequently employed to ignore severe loads across other bridge networks over extended spans. Using CSI Bridge version 21.1.0, the dynamic responses of the Girder Bridge are analyzed. The primary goal of this investigation is to assess and investigate multi-span seismic involving up to five bridge frame spans. The amplitude and acceleration of the ground motion at its peak determine how difficult the Girder Bridge’s seismic performance will be. This is accomplished by using the non-linear Push over analysis modelling approach. The response data depicts the deformed shape, relative acceleration, base shear, base reaction, shear force stresses, base moment, and relative displacement.

Keywords: Earthquake, Girder Bridge, CSi Bridge, Deformed Shape, Seismic Response and Response Spectrum, and Pushover Analysis.