設計圧を越える1/4PCCVモデル内圧試験の全体挙動解析

抄録

NUPEC has been planning the ultimate strength test of 1/4 uniform scale PCCV imaging severe accident. The pre-test analysis will be compared with measured data. This paper deals with several techniques to obtain physically reasonable analysis results with better convergence up to 3.8 times design pressure.The pre-test analysis was performed using axisymmetric global modeling based on these techniques. Concrete cracking governed the global behavior of PCCV. That is, the reduction of concrete stress due to cracking caused the changes in stress distribution of rebars and tendons and resultant global deformation behavior.