Seismic Time-history Response Analysis of Long-span Arch Bridge

Seismic time-history response behavior analysis of long-span reinforced concrete box arch bridge is analyzed by using the modules developed with the program ANSYS for a reinforced concrete arch bridge which is being built.This bridge's span is 150 meters.Two acceleration time-history curves Tianjin wave and EL-Centro wave are chosen to analyze seismic time-history response by using uniform excitation and traveling-wave excitation.The results show that compared with the results got from the uniform excitation method,the moment at end arch and at l/4 span,the force at l/4 span both increase a lot,but the force at end arch and top arch,the moment at top arch decrease when the traveling-wave effect is considered.