爆炸荷载作用下RPC柱破坏概率分析

Analysis of RPC Column Failure Probability under Explosive Load

摘要:

活性粉末混凝土（reactive powder concrete， RPC）依托其优异的强度性能、抗冲击韧性以及较高的强重比等特性，在工程结构领域展现出巨大应用潜力。然而，当前对其在爆炸荷载作用下的动态响应机制及破坏模式研究仍存在空白。为提升关键建筑结构的抗爆性能，通过系统分析不同参数下RPC柱的P-I曲线特征，揭示其破坏概率演变规律，为优化结构设计提供理论支撑。研究结果显示，影响RPC柱破坏概率的关键因素依次为：截面尺寸>长细比>材料抗压强度，为工程实践中针对性设计优化提供了科学依据。

Abstract:

Relying on its excellent strength properties, impact toughness and high strength-to-weight ratio, the reactive powder concrete (RPC) shows the great application potential in the field of engineering structures. However, there is still a gap in the research on the dynamic response mechanism and failure mode of RPC under the explosive load. In order to improve the explosion resistance of key building structures, the P-I curve characteristics of RPC columns under different parameters are systematically analyzed, and the evolution law of its failure probability is revealed, which provides the theoretical support for optimizing the structural design. The research results show that the key factors affecting the failure probability of RPC columns are the cross-sectional size > slenderness ratio > compressive strength of the material, which provides a scientific basis for the targeted design optimization in engineering practice.