Abstract
The objective of this paper is to evaluate the structural condition of an existing reinforced cement concrete T-beam and slab bridge and to check its survivability under two imposed ground motions. A three dimensional finite element model of the bridge was developed using Structural Analysis and Program Software SAP2000. The finite element model of the bridge was subjected to ground motions along the transverse and longitudinal directions. A nonlinear static pushover analysis was carried out and the capacity curves were obtained. The seismic demands and the capacities were established. The performance of the bridge was assessed and the results are reported.
Highlights
Road bridges are the most critical means of transportation systems which are susceptible to failure if their structural deficiencies are unidentified
The objective of this paper is to study the inelastic behaviour of an existing T-beam cum slab bridge using nonlinear static pushover analysis
The behaviour of the hinges under self-weight was in the linear range
Summary
Road bridges are the most critical means of transportation systems which are susceptible to failure if their structural deficiencies are unidentified. The 2001 Bhuj earthquake of magnitude 7.6 that shook the Indian Province of Gujarat was the most deadly in India's recorded history. This disaster has created awareness among the engineers to determine the structural vulnerability of the bridges which were built before 2001 to develop the required retrofit measures. It is the need of the hour to study the performance and check the survivability of the existing bridges. The objective of this paper is to study the inelastic behaviour of an existing T-beam cum slab bridge using nonlinear static pushover analysis
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