Optimization Design Of Branch Penstock In Hydropower Station Under Sky-high Water Level

Bifurcation underground hydropower station project is a key part of the structure because of its complex shape, the uncertainty of the state, its structure has been designed for people by the attention. With the development of hydropower, to strengthen the crescent rib steel bifurcation has been widely used. Crescent rib steel bifurcation by Shell and space to strengthen the combination of a rib structure, its complex shape, structural calculations, and so on need to spend a lot of working hours.The traditional structural design, are usually based on experience and judgement to be created by an engineering design and use of mechanical methods on a given programme for analysis. First, this low efficiency, and the other is the outcome of the designers of experience and time constraints. Structural optimization theory and the emergence of an injection of vitality to this, the mechanical concepts and technology to optimize the organic combination of ANSYS in particular, is based on the design parameters APDL more optimal design adds to the vitality, it can shorten the design cycle, labour-saving And improving quality and achieved significant results. This paper Luo Ma Hydropower Project in Yunnan crescent rib steel bifurcation of the design on the following aspects:(1) According to bifurcation geometry derived crescent shape ribbed steel bifurcation formula, from basic design parameters of a formula based on body shape steel bifurcation of the structure size and shape outline plans.(2) Based on the principle of structural mechanics, a point penalty function within the law, the use of the existing Fortran language of the proceedings of the optimized shape.(3) under the space of the intersection of principle, by the mesh size parameters and parameters on steel bifurcation finite element mesh automatically subdivision. ANSYS procedures used in the optimization of procedures, methods used to build a band has been optimized.With the actual works, the traditional method of mechanical design and optimize the design, verify the design parameters APDL the effectiveness and convenience, it is in the works which promote.