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| Multi-substructure collaborative hybrid test method for a multi-span continuous girder bridge |
| YANG Jianfeng， TIAN Shizhu |
| School of Civil Engineering, Suzhou University of Science and Technology, Suzhou 215011, China |
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Abstract Based on Newmark-β method, a predict-geometric correct algorithm (P-GC) was proposed to be taken as a numerical integration method for multi-substructure hybrid tests.With this method, the process stiffness was adopted to predict boundary displacements of substructures, and the geometric correct method was used to retrieve the lost predictive displacement increment of substructures.Based on the P-GC algorithm, a multi-substructure collaborative hybrid test system was developed for multi-span continuous girder bridges.Finally, numerical simulation tests were conducted for a certain actual multi-span continuous girder bridge.The results showed that the multi-substructure collaborative hybrid test method based on the P-GC algorithm can be used to effectively simulate seismic responses of the girder bridge structure and its multiple substructures’ nonlinear behaviors.
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Received: 06 March 2018
Published: 28 July 2019
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