Impact of Near-Fault Ground Motions on Longitudinal Seismic Response of CHRF Bridges

Curved high-pier rigid frame bridges (CHRF bridges) are unavoidably affected by near-fault ground motions (NFGMs), and seismic pounding between adjacent components of CHRF bridge has a significant effect on the performance bridges. The response laws under NFGMs need further investigation. In this study, influence with impulse directional effects dynamic was studied. Subsequently, responses were systematically analyzed. results showed that have impact impulse-like (IPGMs) is greater than non-pulse-like (NPGMs). lowest far-fault (FFGMs). backward region (BRGMs) forward (FRGMs). IPGMs induce larger force (PF) smaller number poundings (PN) compared FFGMs. PF PN increase from FRGMs to BRGMs. Because pounding, cause shear main pier auxiliary significantly relative bending moment decreases. Moreover, tie beam increases owing pounding.