Parametric Modeling Program And Finite Element Calculation For Hydropower Station In River Channel

Power station in river channel is a conventional type of hydropower plant.Due to the complexity of the structure,the three-dimensional finite element analysis method is frequently adopted in the stress analysis.Water intake structure,tailwater platform,beam-slab-column system,concrete spiral case and draft tube are the main structures of power station in river channel,each structure consists of many detail structures that are very complicated in shape design and modeling.Under this circumstance,the establishment of the three-dimensional finite element model is time-consuming and laborsome,in addition,it is easily influenced by the differences in working habits and the methods of design and analysis,resulting in human error and work efficiency delays,and ultimately increasing the difficulty of audit work and reducing the accuracy of the results.Therefore,it is of greate significance to standardize the three-dimensional modeling and finite element analysis process of the power station in river channel and to parameterize the design content.According to the basis above,a thorough research on geometric shape and detail structure of the typical power station in river channel has been conducted.Meanwhile,an efficient and convenient way for three-dimensional design and finite element analysis as well as a standard procedure are proposed in this paper on the basis of the study on the development status quo of three-dimensional design technology in hydropower engineering industry.Further more,a software platform,which encapsulated the specifications and standard parameters on three-dimensional design,has been developed based on secondary development method for CATIA.During the process of the development,not only a set of secondary development methods based on CATIA has been summerised but also some explainations have been made on the functions,objects and methods that might be used.In the meantime,this article put forward a set of methods dealing with the division of modules of complex modeling and some principles for standard parameters in hydropower engineering projects,which proves to be instructive for the programming process in other hydropower engineering projects.The object-oriented programming concept is adopted in the development of the three-dimensional design platform for the power station in river channel.The research results not only fill the domestic gap,but also meet the growing demand for three-dimensional design and finite element analysis of hydropower engineering projects.Through the application of the research results,the standardized and efficient three-dimensional design of the water intake structure,tailwater platform,beam-slab-column system,concrete spiral case and draft tube in power station in river channel are realized.Combined with an engineering practice of Tongzilin power station in river channel,the three-dimensional model is created by employing the program and finite element analysis is used to analyze stress and displacement.As a result,the overall design analysis process is standardized,the design efficiency and reliability are greatly improved,the design cycle is shortened,and the cost is saved,which has significant social benefits and promotion value.