大飞机撞击钢筋混凝土核安全壳模型试验研究  

Experimental study on a large aircraft impacting reinforced concrete nuclear containment structure model

作　　者：刘晶波[1] 王菲 孙运轮 LIU Jingbo;WANG Fei;SUN Yunlun(Department of Civil Engineering,Tsinghua University,Beijing 100084,China;College of Defense Engineering,Army Engineering University of PLA,Nanjing 210007,China;Chinergy Co.,Ltd,Beijing 100193,China)

机构地区：[1]清华大学土木工程系,北京100084 [2]陆军工程大学国防工程学院,江苏南京210007 [3]中核能源科技有限公司,北京100193

出　　处：《建筑结构学报》2022年第8期185-195,共11页Journal of Building Structures

基　　金：国家科技重大专项(2018ZX06902016)。

摘　　要：美国9·11恐怖袭击事件后,核电厂房抵御大型商用飞机恶意撞击成为核安全领域备受关注的热点问题。为真实准确地研究大飞机撞击下核电厂房结构的损伤破坏及振动特性,基于某新型反应堆核电厂房结构,设计了大飞机撞击钢筋混凝土核安全壳模型试验,获得了核安全壳结构遭受大飞机撞击时相对完整的试验数据及物理参数。试验结果表明:当大飞机模型以我国核电厂厂址选择安全导则中建议的基准速度100 m/s撞击时,安全壳模型发生局部碎甲破坏,但壳体的主筋整体性能完好,钢筋网有效阻止了大飞机模型的侵入破坏。依据试验结果研究了钢筋混凝土安全壳结构在大飞机撞击作用下的损伤破坏规律和特点,分析了结构的撞击振动反应特性。根据试验结果反演至原型结构,安全壳结构的环梁牛腿处和筒体与穹顶连接处峰值加速度较大,分别为39.5g和47.2g,底板处水平和竖向峰值加速度相对较小,但仍达到3.45g和4.37g。壳体直接撞击区钢筋发生屈服,而在壳体碎甲区之外,各测点的钢筋应变均小于屈服应变,钢筋未发生屈服,钢筋混凝土壳体未发生由振动导致的破坏。After the 9·11 terrorist attack in the United States, the capability of nuclear power plant(NPP) to resist impact of a large commercial aircraft has become the focus in the nuclear security field. In order to truly and accurately study the damage and vibration characteristics of the NPP containment against a large aircraft impact, a large aircraft impacting the reinforced concrete(RC) nuclear containment structure model test was designed based on a new type of NPP containment. Complete test data and physical parameters of the nuclear containment structure were obtained. The results show that when the large aircraft model collides with a reference velocity of 100 m/s, as recommended by the safety guidelines for the site selection of NPP in China, the containment model has the local scabbing damage, but the overall performance of the longitudinal reinforcement is in good condition. The reinforcement prevents large aircraft model invasion and damage effectively. Based on the test, the damage and failure characteristics of the RC nuclear containment subjected to the impact of a large aircraft were discussed and the impact vibration response characteristics of the nuclear containment were preliminarily analyzed. By converting the test results to a prototype NPP, it is concluded that the peak accelerations at the corbel of the ring beam and the connection between the cylindrical barrel and the dome are large, which are 39.5g and 47.2g respectively. The horizontal and vertical peak accelerations at the bottom slab are smaller, but still reach 3.45g and 4.37g. The steel bars in the direct impact area of the nuclear containment have yielded, while the strain of steel bars at each measuring point outside the scabbing area of the nuclear containment is less than the yield strain. The steel bars have not yielded and are in the elastic state, and the RC nuclear containment model is not damaged induced by vibration.

关 键 词：大飞机 核安全壳 撞击试验 损伤破坏 结构动力反应 

分 类 号：TU375[建筑科学—结构工程] TU317.1