摘要
针对地震荷载下的某框架结构特点,以结构的体积、最大单元有效应力和最大节点位移作为目标函数,梁截面尺寸作为设计变量,并采用离散变量的形式进行描述,将梯度优化和全局优化算法相组合,对其进行优化设计.计算结果表明,优化后体积的减小能降低工程造价.实例分析表明该模型能应用于实际工程的优化设计.
According to the characteristics of a frame structure under seismic load, the structural volume, the maximum element effective stress and the maximum nodal displacement are taken as objective functions, and the beam section dimensions are taken as design variables, which are described in discrete variables. The gradient optimization and global optimization algorithm are combined to optimize the design. The calculation results show that the reduction of the volume after optimization can reduce the cost of the project. The example analysis shows that the model can be applied to the optimization design of practical engineerings.
出处
《河南科学》
2017年第11期1819-1822,共4页
Henan Science
基金
水文水资源与水利工程科学国家重点实验室开放基金(2016491811)
云南省教育厅科学研究基金项目(2016ZZX109)
关键词
框架结构
地震荷载
有限元法
优化设计
梯度优化和全局优化组合
frame structure
seismic load
FEM
optimization design： combination of gradient and global optimizations
