Design and analysis of shaking table test of a small radius curved bridge
ZHANG Zhi1，LI Xiaojun1,2,LAN Riqing2
1.College of Architecture and Civil Engineering,Beijing University of Technology,Beijing 100124,China;
2.Institute of Geophysics,China Earthquake Administration,Beijing 100081,China
Abstract：Focusing on a small radius curved bridge,the shaking table test of a 1/16 scaled model considering pile-soil-bridge structure dynamic interaction was accomplished.The model design and implementation of the shaking table tests were demonstrated.The vibration response of pile-soil-bridge structure was obtained preliminarily using test data and observed phenomena,and the failure features and modes of the scaled model were investigated.The results showed that the frequencies were in a downtrend but damping ratios tended to increase with the intensity of input ground motion; from the bottom of pile to the bridge deck,acceleration responses of structure tended to increase; the strain and dynamic soil pressure amplitudes of pile top were maximum,and the strain of pier column was larger than pile; torsion phenomenon was observed in the test,and a series of earthquake damage phenomena,such as girder falling,bearing failure,crack penetration and local concrete crushing,were demonstrated during the test.
张智1，李小军1,2,兰日清2. 小半径曲线桥振动台试验模型设计与试验研究[J]. 振动与冲击, 2019, 38(4): 95-102.
ZHANG Zhi1，LI Xiaojun1,2,LAN Riqing2. Design and analysis of shaking table test of a small radius curved bridge. JOURNAL OF VIBRATION AND SHOCK, 2019, 38(4): 95-102.
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