STUDY OF DISPLACEMENT-BASED DESIGN METHOD OF AIR-COOLED CONDENSER STRUCTURE CONSIDERING EQUIPMENT SAFETY

The existing seismic design methods of air-cooled condenser structure do not meet theinvestment benefit criterion because they do not consider the safety of the equipment in earthquake． Through the experimental study on the seismic performance of the structure，performance levels and quantified values of the structure were given，which were suitable for the structure-equipment coupled system，the design methods and steps were established． Finally， displacement-based seismic design method was used to analyze a 1 000 MW air-cooled condenser structure，and the nonlinear dynamic time history analysis was taken for validation． The results showed that displacement-based seismic design method was reasonable．