Sensitivity Analysis of Factors Influencing the Blast Resistance of Reinforced Concrete Columns Based on Grey Relation Degree

Reinforced concrete (RC) column is an important load-bearing component in building structures. In order to study the blast resistance of RC columns, numerical simulation model was verified based on field test data, and ANSYS/LS-DYNA 2020R2 software used expand working conditions. The sensitivity analysis method grey relation degree effects factors, such as diameter longitudinal reinforcement, number stirrup, stirrup spacing, strength concrete, scale distance, reinforcement columns. results show that changing reinforcements control ratio can make peak displacement columns smaller rather than reinforcement. Changing spacing have better stirrup. materials has little effect mid-span influencing factors concrete. between larger, 0.6914 0.6660, respectively. This provide a reference for design construction