Shaking table tests for transverse aseismic control of cable-stayed bridges
YI Jiang1, SUN Ping-kuan2, LI Jian-zhong1
Author information+
1. State Key Lab of Disaster Reduction in Civil Engineering, Tongji University, Shanghai 200092, China;
2. China Highway Engineering Consulting Group Co.,Ltd., Beijing 100089, China
based on a single-tower cable-stayed bridge, a 1:20 large scale full bridge model for shaking table tests was designed to study the effectiveness of elastic-plastic damper to reduce transverse seismic responses of the cable-stayed bridge. Both a far-field ground motion wave and a near-field one were taken as seismic inputs for the bridge model’s shaking table tests. Test results showed that comparing to a rigid connection of tower-deck and pier-deck, tower-deck connected to pier-deck with elastic-plastic dampers effectively reduces transverse seismic responses of the tower; under the action of a far-field ground motion wave and a near field one, the reinforcing bar strain of the tower bottom section can be reduced by 40% and 10%, respectively; however, under the action of a near-field ground motion wave, the elastic-plastic damper’s deformation is 3.6~4.6 times of that under the action of a far-field one, it produces obvious residual deformation after loading is completed. Comparing the test results with those of numerical analysis, both of them agreed well.
YI Jiang1, SUN Ping-kuan2, LI Jian-zhong1.
Shaking table tests for transverse aseismic control of cable-stayed bridges[J]. Journal of Vibration and Shock, 2018, 37(3): 47-53
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