摘要
建筑结构的可靠性是建筑工程的基本要求.在实际工程中,影响结构可靠性的因素较多,且具有随机性和不确定性,实践中一般采用结构可靠度进行结构可靠性设计分析.介绍了结构可靠度相关原理及可靠度计算中相关变量参数,提出了一种改进遗传算法对结构可靠度进行分析.该算法是基于生物进化论自然选择和遗传学机理的,模拟自然进化过程搜索最优解的方法,擅长全局最优解的搜索.将遗传算法引入结构设计中,有利于克服传统算法在地质、地形条件较复杂情况下易陷于局部最优解的不足.
The reliability of the building structure is the basic requirement of the construction project. In the actual project, there are many factors influencing structural reliability with the randomness and uncertainty. Generally the structure reliability is adopted to de- sign and analyze the reliability of structure in practice. In the paper, the related principles of the structure reliability and relevant varia- bles in the calculation of reliability were introduced, and an improved genetic algorithm was proposed for structural reliability analysis. This algorithm based on the natural selection of biological evolution and the genetics mechanism could simulate the natural evolution to search for the optimal solution, and was good at searching for the global optimum. The genetic algorithm was introduced to the structur- al design, which would be conductive to overcoming the deficiency that the traditional algorithm was easily trapped in local optimal so- lution under the complex conditions of geology and topography.
出处
《华北水利水电大学学报（自然科学版）》
2014年第2期56-59,共4页
Journal of North China University of Water Resources and Electric Power：Natural Science Edition
关键词
木结构
可靠度
改进算法
wood structure
reliability
improved algorithm
