In practical engineering applications

the general design software has not been developed for hydraulic structures of nuclear power plants with high safety grade.Therefore

the secondary development tools of ANSYS

namely APDL

UIDL

and the visual tool command language（Tcl/Tk）are used to develop a set of procedures for the design of hydraulic structures of nuclear power plants.This includes modeling

calculation

and post-processing

which simplifies the operation process.The numerical example shows that the internal force extraction procedure can be used for reinforcement design with high precision.The visual reinforcement program is used to analyze the engineering project and the reinforcement and crack calculation results conform to the design requirements.In addition

some suggestions are put forward for optimizing the design of walls based on the reinforcement results.By embedding internal force calculation and visual reinforcement program in ANSYS

the design of nuclear power hydraulic structures can be carried out

and its good engineering applicability is proved.