文章摘要
王欣,陈博文,林远山,高顺德.基于粒子群算法的大跨度钢结构吊点层次优化[J].,2012,(5):664-669
基于粒子群算法的大跨度钢结构吊点层次优化
Hiberarchy optimization of lift points for large-span steel structure based on particle swarm optimization
  
DOI：10.7511/dllgxb201205007
中文关键词: 大跨度钢结构  粒子群算法  吊点层次优化  离散变量
英文关键词: large-span steel structure  particle swarm optimization  hiberarchy optimization of lift points  discrete variables
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作者单位
王欣,陈博文,林远山,高顺德  
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中文摘要:
      在面对大跨度钢结构的多台起重机协同吊装时,为了解决各种变形协调方程都不明确情况下的结构吊点设计问题,利用最小应变能原理,基于改进粒子群算法对吊点进行层次优化,即对吊点数量和布局进行综合优化．通过对标准粒子群算法进行改进并结合APDL的ANSYS二次开发技术,在MATLAB环境中编制了适应大跨度钢结构多吊点层次优化的程序,有限元软件ANSYS被后台调用求解目标函数．该方法充分发挥了有限元软件数值计算准确及粒子群算法求极值的高效性和全局性的优点,与ANSYS自带的零阶方法以及遗传算法、模拟退火算法等进化算法相比表明,本优化方法取得了较好的结果,为解决大跨度结构的吊点离散变量组合优化问题提供了一种新的更有效的途径．
英文摘要:
      To design the lift points when the various compatibility equations are undefined in multiple-crane cooperative lift oriented to large span steel structures, the particle swarm optimization is applied in hiberarchy optimization of lift points based on the minimum strain energy theory, which is to determine the comprehensive optimal strategy on numbers and distribution of lift points. A program which is developed by MATLAB suitable for optimal design of multiple lift points for large-span steel structure is developed by improving the standard particle swarm optimization and combining the secondary development technology of ANSYS using APDL, and the finite element software ANSYS is applied in the calculation of objective function in background. The accuracy of numerical computation of finite element software as well as the efficiency and overall cover of extremum computation of particle swarm optimization is fully realized. The proposed optimal method is compared with the zero-order algorithm affiliated to ANSYS software as well as other evolutionary algorithms, such as genetic algorithm and simulated annealing algorithm, and the experimental results indicate that the proposed optimal method is satisfactory and provides a more efficient new approach for discrete variable combinatorial optimization of lift points for large-span structures.
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