Research On Seismic Performance Of Reinforced Concrete Hollow Bridge Based On OpenSees

The proposed new high pier and long-span bridge mostly adopts reinforced concrete hollow bridge in our country.Compared to the solid pier, with the same size, hollow pier greatly reduces the material consumption, and provide with high performance-price ratio. However, the domestic related research is very little for hollow bridge.Our country is quake-prone, the research on seismic performance of reinforced concrete hollow bridge has important practical significance in Engineering.This article uses the finite element analysis software OpenSees to reinforced concrete hollow bridge pier model for dynamic analysis. OpenSees software has been officially launched since1999, and has been widely used in scientific research project of the Pacific earthquake engineering research center、 some other university and research institutes in the United States. OpenSees software simulate the reinforced concrete structures, including bridges, geotechnical engineering, many practical engineering and shaking table test project, which prove that it has better nonlinear numerical simulation precision. Therefore, OpenSees software have a certain significance for hollow bridge pier model analysis results, this article has the following work.1.Through the extensive, thorough investigation, understand the failure forms and causes of hollow pier under earthquake, preliminary to determine the influence factors of the seismic performance of bridge pier.2. Understanding of the process of Opensees how to modeling, analysis,and outputting and knowing the meaning of parameter settings.3.Based on the push-over analysis and dynamic time-history analysis under different seismic waves to the OpenSees models, study the seismic performance of bridge pier at different axial compression ratio, reinforcement ratio and height of piers.