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讨论有粘结预应力混凝土风力机塔架的结构计算,并从提高经济性和方便施工角度,利用自动分组遗传算法(AGGA)研究混凝土塔架优化设计问题。首先根据风力机塔架受力特点,提出混凝土塔架承载力和正常使用极限状态的设计要求,并参考国内外现行规范,给出计算这些设计要求的方法。在此基础上,建立以塔架最小建造成本为目标,考虑两种极限状态下多项设计要求和反映施工复杂程度的设计变量分组要求的优化模型。AGGA求解该优化问题,获得满足要求的最小成本设计。36 m混凝土塔架算例可表明优化方法的效果。
The structure calculation of the bonded prestressed concrete wind turbine tower is discussed. And the optimization design of the concrete tower frame is studied by means of automatic grouping genetic algorithm (AGGA) in terms of improving the economy and convenience of construction. First of all, according to the characteristics of wind turbine tower, this paper puts forward the design requirements of the bearing capacity and the limit state of normal use of the tower. The methods of calculating these design requirements are given with reference to the current codes at home and abroad. On the basis of this, an optimization model considering the design requirements of two kinds of limit states and the grouping requirements of design variables reflecting the complexity of construction is established, aiming at the minimum construction cost of the tower. AGGA solves this optimization problem and gets the minimum cost design that meets the requirements. The example of a 36 m concrete tower shows the effect of the optimization method.