炸弹接触核电站安全壳壳顶爆炸的结构动力响应分析

NUCLEAR POWER STATION CONCRETE CONTAINMENT DYNAMICAL RESPONSE ANALYSIS UNDER CONTACT BLASTLOAD

核电站安全壳是防止放射性物质向外释放的最后一道屏障，是预应力钢筋混凝土简壳结构。作为重要的能源经济目标，由于其泄露所带来的特殊的心理恐慌，在恐怖活动日益猖獗的今天，核电站的安全防护显得非常重要。根据核电站安全壳的结构形式，采用流固耦合算法，对等效TNT爆炸当量为6000kg的炸弹装药接触核电站安全壳穹顶表面爆炸时，筒壳结构在爆炸冲击作用下的动力响应进行了数值模拟，得出了炸弹接触爆炸时结构的破坏情况以及应力分布规律。数值模拟结果可为核电站在战时的安全防护对策制定提供参考依据。

In the modern war and anti-terrorism, nuclear power station may greatly have been attacked by pinpoint general bomb. Shoot straight is one of the maximal characteristic, nuclear power station containment shell is a large-volume pre-stressed reinforced concrete silo-shell structure to prevent radioactivity. It is a keystone safety object. The paper, based on structure form of nuclear power station containment, uses liquid-solid coupling arithmetic and analyzes concrete containment dynamical response under contact blast load. Through detailed analysis, it gives breakage complexion and stress distributing orderliness of containment shell at the case of contact blast. These numerical values will provide important technical parameters for the war safety about nuclear power station.