斜拉桥塔柱截面尺寸优化设计

在现有斜拉桥计算理论和结构优化理论的基础上,系统地考虑斜拉桥设计中应注意的多方面因素,确定了斜拉桥塔柱截面尺寸优化设计的设计变量、约束条件和目标函数,建立了优化设计的数学模型,并进行了算例分析。算例结果表明,利用建立的优化模型结合有限元方法对斜拉桥部分构件进行数学优化是可以实现的,其结果也能满足一定的工程精度。

Optimal Design of Pylon Shaft Section Size of Cable-Stayed Bridge

On the basis of the current calculation and structural optimization theories of cable-stayed bridges,this paper systematically takes into account of various factors to which attention should be paid in the design of a cable-stayed bridge,ascertains the design variables,restraint conditions and objective functions in the optimal design of pylon shaft section size of the bridge,establishes mathematical model for the optimal design,and also conducts analysis of numerical examples.The results of the numerical calculation and analysis indicate that the mathematical optimization of part of the components of the cable-stayed bridge is feasible by using the optimization model created in the paper together with the finite element method,and the results are also proved to meet precision of certain cable-stayed bridge works.