Research On Seismic Performance Of High-strength Concrete Column

Research shows that the main factors which influence the high-strength concretecolumns include axial compression ratio, shear span ratio, concrete strength, concrete cover,reinforcement characteristic value(stirrup strength, stirrup spacing, stirrup diameter, stirrupconstraint forms etc.), the ratio of longitudinal reinforcement(longitudinal reinforcementdiameter and number of longitudinal reinforcement), longitudinal reinforcement strength etc.According to the reasonable configuration, the ductility of high-strength concrete columns canbe raised, so as to meet the requirements of specification. The stipulate of limited axialcompression ratio of high-strength concrete columns and the influence of longitudinalreinforcement and stirrup spacing to the ductility are different in some literature. And mostliteratures simply show the ductility of high-strength reinforced concrete columns with thechange of parameters. So the main research of this paper include:1.4high-strength concrete columns are tested under cyclic loading. Parameters, such asaxial compression ratio, stirrup spacing and reinforcement ratio, were mainly studied, and thefailure process was observed and described.2. According to the result of pseudo-static test of high-strength concrete column, axialcompression ratio, stirrup spacing and longitudinal reinforcement diameter were studied,which influence the ductility, resistance attenuation and energy dissipation. And this willprovides experiment research foundation for high strength concrete column development.3. Loading analysis of high-strength concrete column was done by ABAQUS. And31conditions were studied according to the changes in parameters of axial compression ratio,longitudinal reinforcement diameter, stirrup spacing and stirrup diameter ect. Then,comparing with the experiment result, a detailed description of parameters were given, suchas axial compression ratio, longitudinal reinforcement diameter, stirrup spacing and stirrupdiameter, which influence the performance of high-strength concrete columns.