Abstract：Under seismic action, pounding can significantly affect seismic responses of bridges. At present, influence laws of pounding effect on bridges’ seismic responses are not clear, especially, the effect of longitudinal slope is not considered. Here, a 1/10 scale curved bridge model with longitudinal slope was designed and made, and an adjustable pounding test device was designed. Through adjusting pounding clearance, shaking table tests were conducted for the bridge model before and after pounding to study effects of pounding on seismic responses of the model’s girder and pier. The results showed that pounding causes the bridge girder’s rotary effect to increase and a larger horizontal acceleration response pulse at the girder end; longitudinal slope causes pounding force at lower pier to be larger than that at higher pier and the girder’s significant vertical dynamic response; pounding amplifies displacement response at pier’s top and increases failure risk of pier under seismic action.
李娜娜,许维炳,陈彦江,闫维明,苏鹏. 考虑纵坡影响的曲线梁桥地震碰撞响应试验研究[J]. 振动与冲击, 2019, 38(13): 135-141.
LI Nana,XU Weibing,CHEN Yanjiang,YAN Weiming, SU Peng. Tests for seismic pounding response of a curved bridge considering effect of longitudinal slope. JOURNAL OF VIBRATION AND SHOCK, 2019, 38(13): 135-141.
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