Hollow concrete-filled steel tube (CFST) column outsourced with Ultra-high performance concrete (UHPC) is one of the new type of composite columns. Based on the consistent numerical simulation and experimental results, the finite element software ABAQUS was used to establish the models of hollow CFST column outsourced with UHPC, which are used to explore the effects of hollow ratio, axial compression ratio and steel thickness on the seismic performance of composite column. The results indicate that the seismic performance of composite column can be improved by increasing the steel thickness and the hollow ratio, the axial compression ratio has little influence on the seismic performance of the composite column.

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Analysis on Seismic Performance of Hollow CFST Columns Outsourced with UHPC

  • Li Liu,
  • Siyu Su

摘要

Hollow concrete-filled steel tube (CFST) column outsourced with Ultra-high performance concrete (UHPC) is one of the new type of composite columns. Based on the consistent numerical simulation and experimental results, the finite element software ABAQUS was used to establish the models of hollow CFST column outsourced with UHPC, which are used to explore the effects of hollow ratio, axial compression ratio and steel thickness on the seismic performance of composite column. The results indicate that the seismic performance of composite column can be improved by increasing the steel thickness and the hollow ratio, the axial compression ratio has little influence on the seismic performance of the composite column.