Title of article :
Endurance time analysis of skewed slab-on-girder bridges: The signicance of the excitation angle
Author/Authors :
Estekanchi, H.E Department of Civil Engineering - Sharif University of Technology, Tehran , Ghaffari, E Department of Civil Engineering - Sharif University of Technology, Tehran , Haghani-Baei, A Department of Civil Engineering - Sharif University of Technology, Tehran
Abstract :
In this paper, the in
fluence of the excitation angle on the Endurance Time (ET)
analysis of skewed slab-on-girder bridges is studied. The excitation of the structure due
to the critical angle produces maximum seismic responses that are sometimes significantly
higher than the average. The modeled bridges are of slab-on-girder type that are typically
used as highway bridges. The bridge models have skew angles of 0, 15, 30, 45, and 60
degrees. The ET excitations exerted on structures cover a broad range of hazard levels.
The results provide some insight with regard to choosing multiple excitation angles so as to
balance computational costs and retain acceptable accuracy for practical design purposes.
Sensitivity of Life-Cycle Cost (LCC) to skewness is also studied.
Keywords :
Slab-on-girder bridge , Seismic analysis , Endurance time method , Skewed bridge , Critical excitation angle , Life-cycle cost analysis
Journal title :
Scientia Iranica(Transactions A: Civil Engineering)
