基于荷载时程分析法的商用飞机撞击钢板混凝土结构安全壳的有限元分析

朱秀云1,2,潘蓉2,林皋1,李亮2

(1.大连理工大学海岸与近海国家重点实验室抗震分室，辽宁大连116024；2.环境保护部核与辐射安全中心厂址与土建部,北京100082)

摘要：由于钢板混凝土墙背部钢板能够有效地约束混凝土在撞击方向上的运动以及限制混凝土碎片的飞溅，为了抵御商用飞机撞击，新型核电机组的核岛厂房外墙通常设计为钢板混凝土结构(SC)。基于荷载时程分析法，运用经典的显式非线性动力分析软件ANSYS/LS-DYNA，进行了波音707-320型号商用飞机撞击某钢板混凝土结构安全壳的响应分析。计算结果表明，即使在安全壳筒身最不利撞击部位冲击作用下，像波音707-320型号的商用飞机对该安全壳的影响是较小的，且增大钢板的厚度能够有效的减小冲击作用下结构的响应。

关键词：荷载时程分析法；飞机撞击；钢板混凝土结构安全壳

中图分类号:TL371文献标志码：A

收稿日期：2013-08-01修改稿收到日期：2013-11-06

FEM analysis of steel plate concrete containment against commercial aircraft impact based on force time-history analysis method

ZHUXiu-yun1,2,PANRong2,LINGao1,LILiang2(1. Laboratory of Earthquake, State Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology, Dalian 116024, China;2. Plant site and civil engineering department,Nuclear and Radiation Safety Center, Ministry of Environmental Protection, Beijing 100082, China)

Abstract:In view of that the rear-face steel plate of the steel plate concrete wall is very effective in preventing the perforation and scabbing of concrete, in order to resist the impact of commercial aircraft crash, steel plate concrete (SC) structures are selected to be used in the design of external walls of nuclear island buildings for the new type nuclear power plant. In this paper, the FEM code ANSYS/LS-DYNA was used to simulate the response analysis on a steel plate concrete containment impacted by a Boeing 707-320 aircraft based on the force time-history analysis method. The results show that even though on condition that the impact load by the Boeing 707-320 commercial aircraft impact load applied on the most adverse impact position of the cylinder containment, the response of the SC containment is small, in other words, the SC containment can resist the impact. Furthermore, the increase of the thickness of the steel plate can effectively reduce the structural response under the impact.

Key words:force time-history analysis method; aircraft impact; steel plate concrete containment

2001年“9.11”事件以后，核电厂在大型商用飞机撞击下的安全问题成为公众的焦点。美国于2009年颁布了联邦法规的新条款10CFR50.150[1]，对于新设计的核动力堆均要求就抵御大型商用飞机恶意撞击进行专门的评价。其中，文件NEI07-13[2]提供了美国电力研究院发展的一套评价大型商用飞机撞击的评估方法，此套方法是满足联邦法规10CFR50.150并被美国核管会(NRC)认可的评价方法。关于飞机撞击核电厂安全壳和乏燃料水池结构完整性的评估，NEI07-13[2]指出需要评估安全壳和乏燃料水池的两种不同的典型结构破坏模式，即局部破坏(飞机引擎冲击引起的碎甲和穿孔)和整体破坏(整个飞机冲击引起的塑性倒塌)。……