Double deck bridge behavior and failure mechanism under seismic motions using nonlinear analyzes

This study uses nonlinear time history analysis to investigate the seismic response of a double deck bridge constructed in China according to the 2008 seismic code of the Ministry of Transportation of the People's Republic of China (MTPRC). The influence of structural characteristics and the effect of bidirectional loading on the behavior and failure mechanism of the bridge were evaluated. Characteristics such as variable lateral stiffness, the foundation modelling, and the longitudinal reinforcement ratio of the upper and lower columns of the bridge pier bents were found to have major impacts on the double deck bridge response under transverse seismic motions. The soft story failure mechanism was found not to be unique to the double deck bridge and is related to some structural characteristics. Bidirectional loading greatly increased the seismic vulnerability of the bridge in comparison to unidirectional loading. Several other specific conclusions were made based on the results of this parametric study.


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  • Accession Number: 01521863
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Mar 24 2014 4:17PM