本文關(guān)鍵詞：Optimization design of prestressed concrete wind-turbine tower　出處：《Science China(Technological Sciences)》2014年02期 　論文類型：期刊論文

  更多相關(guān)文章： prestressed concrete wind-turbine tower optimization finite element method genetic algorithm

【摘要】：Wind energy is a clean and renewable energy for which technology has developed rapidly in recent years.Wind turbines are commonly supported on tubular steel towers.As the turbine size is growing and the towers are rising in height,steel towers are required to be sufficiently strong and stiff,consequently leading to high construction costs.To tackle this problem,a new type of prestressed concrete tower was designed employing a novel tower concept having a regular octagon cross section with interior ribs on each side,which was optimized by comparing the natural frequency and stress difference under the same lateral load in different directions of the tower.The designed tower features a tapered profile that reduces the area subjected to wind;the tapered profile reduces the total weight,applied moment and the capital cost.An optimization method was developed employing ABAQUS software and a genetic algorithm.A target function was defined on the basis of the minimum cost of the concrete and prestressed tendon used,and constraints were applied by accounting for the stress,displacements and natural frequency of the tower.Employing the method,a 100 m prestressed concrete tower system for a 5 MW turbine was optimized and designed under wind and earthquake loads.The paper also reports a systematic design procedure incorporating the finite element method and the optimization method for the prestressed concrete wind-turbine towers.
【作者單位】： Department
【基金】：supported by the National Natural Science Foundation of China(Grant No.51078231)
【分類號】：TU378
【正文快照】： 1 IntroductionWind energy is one of the fastest growing renewable energytechnologies and the most commercially developed.Mostwind turbines are supported on conical steel towers fabri-cated without internal stiffeners[1].Since the turbine sizeand tower he，

本文編號：1317388