THE WHOLE PROCESS CONSTRUCTION MECHANICAL ANALYSIS OF CONTAINMENT CYLINDER FOR NUCLEAR POWER PLANT

The containment which provides protection, sealing and other functions is an important component of third-generation nuclear power plants(European Pressurised Reactor, EPR).Based on a nuclear power plant project, by finite software ANSYS it was analyzed the effects of the following factors on structural mechanical behavior under construction, such as accumulation accuracy of liner installation, modular construction height, pouring concrete lateral pressure and wind loads etc.The maximum radial displacement of the liner and the maximum stress of containment were got;and the pouring concrete lateral pressure of the concrete had the greatest impact on the structure during the construction.In addition, the second-order effects must be taken into account in the simulation.For the nuclear shell cylinder structure, the key technologies and steps of the mesh division were also given, which provided a reference for future analysis of containment.