Failure Mechanism of Reinforced Concrete Rib Arch Bridge under Near-Fault Earthquakes
A typical reinforced concrete rib arch bridge was chosen to investigate its nonlinear response to near-fault ground motions recorded in 2008 Wenchuan earthquake. Results showed that significant seismic damage may occur, maximum demands were higher for near-fault records having forward directive than far-fault motions, and the rotational capacity of rib plastic hinge is not enough for the large compression force of arch rib. While backward-directivity motions, typically do not exhibit pulse-type motions, only have medium seismic damage to the arch bridge.
W. J. Gao et al., "Failure Mechanism of Reinforced Concrete Rib Arch Bridge under Near-Fault Earthquakes", Applied Mechanics and Materials, Vols. 90-93, pp. 940-945, 2011