海上风车吸力式筒型基础的优化设计

摘要

在满足安全的前提下,如何降低成本和方便施工是海上风车吸力式筒型基础设计的技术难题.针对这些技术难点对吸力式筒基进行优化设计研究.提出以筒基总体积、单筒外直径及筒基入泥深度的加权和作为目标函数、以筒基的基本结构参数作为决策变量、以限制结构的深基础运动和浅基础运动作为约束条件的优化模型,并应用蚁群算法求解非劣最优解.工程实例应用表明,优化设计的效果是显著的.%How to reduce cost and construct conveniently at the premise of assuring safety is a key technology in the design of suction bucket foundation of offshore windmill. An offshore windmill suction foundation is optimized based on the key technology. An optimization model is proposed, in which objective function is linear weighted sum of total volume of the foundation, diameter of the single bucket and driving depth; decision variables are basic structural parameters of the foundation; constraint conditions are related to the limitation of deep foundation movement and shallow foundation movement for the structure. Ant colony algorithm is applied to solving non-inferior optimal solution. An engineering example shows that the optimal design is quite remarkable.