Resistance of Gable Structure of Nuclear Island to Progressive Collapse in Conventional Island Shield Building of Nuclear Power Plants

The gable wall of the conventional island a nuclear power plant carries various pipeline loads connecting and island. If collapses is damaged due to progressive collapse main structure island, it will directly threaten safety Therefore, great significance systematically study resistance for safe operation plants. Based on SAP2000 finite element analysis platform, this paper established model reinforced concrete frame first span shield building plant, including gable. According alternate path method, node displacement bearing capacity responses were used determine critical components in gable, single column failures top four importance selected as different conditions. Nonlinear static dynamic methods analyze displacement, internal force change, hinge sequence side ability resist collapse. results showed that had good under failure conditions, whether by nonlinear or analysis, overall vertical obtained was larger than analysis.