Structural Integrity of PHWR Reinforced Concrete Containment under Seismic Excitation

摘要

In this paper, nonlinear transient analysis is carried out to check a structural integrity of an outer reinforced concrete containment structure of a nuclear power plant subjected to an earthquake ground motion. The large transient dynamic analysis is carried out in a supercomputer environment involving thousands of time steps, efficient numerical technique and FEM idealisation within reasonable time. In present work, the containment structure is idealised using 3D twenty noded brick elements. The elasto visco-plastic model is employed to predict concrete cracking, concrete crushing and steel yielding for obtaining the seismic response of the containment shell.