Research on the Seismic Performance of Rectangular Hollow Bridge Pier
In order to study the seismic behavior of rectangular hollow bridge piers under horizontal earthquake,pseudo-static tests of two bridge piers with different axial compression ratios under constant vertical loads were carried out.The seismic performance indexes such as stiffness degradation,bearing capacity,energy dissipation capacity and ductility coefficient were also studied.The seismic performance law was verified by ABAQUS finite element software.The results show that the failure mode is bending failure at the bottom of plastic hinge area;ABAQUS sim-ulation results are in good agreement with experimental values,and good verify and supplement the experimental values;The larger axial compression ratio forms stronger constraints,limits the development of concrete cracks of bridge piers,and improves the bearing capacity and stiffness of bridge piers;The energy dissipation capacity and ductility coefficient of specimens with large axial compression ratio are low.
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