A preliminary study on the local impact behavior of Steel-plate Concrete walls

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• 作者：Kap-sun Kim^a ; ^{kapskim11@khnp.co.kr} ; Il-hwan Moon^b ; Hyung-jin Choi^c ; Deok-woo Nam^a
• 关键词：Missile impact ; Impact test ; Numerical simulation ; Local impact behavior ; Steel-plate Concrete walls(SC walls)
• 刊名：Annals of Nuclear Energy
• 出版年：2017
• 出版时间：April 2017
• 年：2017
• 卷：102
• 期：Complete
• 页码：210-219
• 全文大小：3889 K
• 卷排序：102

文摘

International regulations for nuclear power plants strictly prescribe the design requirements for local impact loads, such as aircraft engine impact, and internal and external missile impact. However, the local impact characteristics of Steel-plate Concrete (SC) walls are not easy to evaluate precisely because the dynamic impact behavior of SC walls which include external steel plate, internal concrete, tie-bars, and studs, is so complex.In this study, dynamic impact characteristics of SC walls subjected to local missile impact load are investigated via actual high-speed impact test and numerical simulation. Three velocity checkout tests and four SC wall tests were performed at the Energetic Materials Research and Testing Center (EMRTC) site in the USA. Initial and residual velocity of the missile, strain and acceleration of the back plate, local failure mode (penetration, bulging, splitting and perforation) and deformation size, etc. were measured to study the local behavior of the specimen using high speed cameras and various other instrumentation devices. In addition, a more advanced and applicable numerical simulation method using the finite element (FE) method is proposed and verified by the experimental results.Finally, the experimental results are compared with the local failure evaluation formula for SC walls recently proposed, and future research directions for the development of a refined design method for SC walls are reviewed.