Impact of Radiation-induced Expansion of Aggregate on Structural Performance of Hollow Cylindrical RC Member

Reinforced concrete (RC) hollow cylindrical members were numerically investigated to understand the impact of radiation-induced volume expansion aggregates on seismic performance member. The rigid body spring network model was used in this analysis, and proposed constitutive laws parameters validated by comparing two horizontal loading experiments for RC members: a reference experiment one which temperature gradient developed wall members. resultant confirmed. After validating methodology, different degrees aggregate strain applied elements considering reduced neutron fluence distribution inside wall, assuming real size biological shielding concrete. then loaded horizontally. It confirmed that stiffness maximum bearing capacity decreased slightly with an increase fluence, deformation at increased slightly. Based calculation results, simplified analytical can reproduce shear deformation–horizontal load relationship based Inada (1987).