In order to study the basic mechanical properties of ultra-high-performance concrete(UHPC)on reinforced concrete columns,axial compression tests were carried out on 6 reinforced UHPC precast concrete composite columns with the stirrup ratio and slenderness ratio as test parameters.The test results showed that,compared with ordinary reinforced concrete(RC)columns and UHPC precast hollow col-umns,the reinforced UHPC precast concrete composite columns could significantly improve the crushing phenomenon of RC columns and the brittleness characteristics of UHPC.In order to better play the role of joint force,the hoop effect should appear early.A finite element calculation model of the composite column was established via the ABAQUS program.According to the finite element parameter analysis,UHPC strength,diameter-thickness ratio,UHPC stirrup ratio and slenderness ratio were important param-eters affecting the axial compression test of reinforced UHPC precast concrete composite columns.
关键词
超高性能混凝土/预制管/组合柱/静力试验/有限元
Key words
ultra-high performance concrete/precast tube/composite column/static test/finite element
维普
万方数据