This paper focuses on reinforced concrete(RC)columns subjected to explosive loads,taking into ac-count the uncertainties associated with explosive load,material properties,geometric dimensions,and the nonlin-earity of the limit state equation under explosive loading.A new form of load partial coefficient is proposed,which incorporates two load parameters:overpressure peak and impulse.The limit state equation for RC columns is con-structed using the overpressure peak-impulse curve.Based on this limit state equation,six different forms of load partial coefficients are introduced.The Monte Carlo method is utilized to calculate the partial coefficients and failure probabilities,selecting the optimal form of load partial coefficient based on the principle of minimal dispersion.For typical explosive scenarios,the relationship between the load partial coefficients and failure probabilities is fitted,and the accuracy of the partial coefficients is validated refer to existing research.This paper provides a reference for the calculation of load partial coefficients.
RC columnload partial coefficientfailure probabilityMonte Carlo method
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