基于杆件构形刚度参数均匀化的单层网壳稳定性能优化  

The Stability Performance Optimization of Single-Layer Reticulated Shell Based on a Homogenization of Member Configuration Stiffness Parameters

作　　者：张澜 孙建恒[1] 史若琪 王军林[1] ZHANG Lan;SUN Jianheng;SHI Ruoqi;WANG Junlin(College of Urban and Rural Construction,Hebei Agricultural University,Baoding 071001,China)

机构地区：[1]河北农业大学城乡建设学院,河北保定071001

出　　处：《建筑钢结构进展》2023年第11期79-88,共10页Progress in Steel Building Structures

基　　金：河北省自然基金(E2020204031)。

摘　　要：为实现网壳各节点抵抗荷载能力的均匀分布,提升结构稳定承载力,基于网壳结构受力特点,引入了单层网壳结构的杆件构形刚度参数。以结构杆件构形刚度均匀化为目标,将网壳杆件截面尺寸作为优化变量,采用惯性权重改进后的粒子群算法对网壳的杆件截面进行优化配置。优化结果表明,构形刚度方差能较为准确地反映结构的杆件构形刚度均匀程度。通过粒子群算法优化后求得的杆件配置可以使网壳结构接近于等稳定性,最大程度地提升结构的稳定极限承载力。To realize the uniform distribution of the load bearing capacity of each node in the reticulated shell and improve the bearing capacity of the structure,the member configuration stiffness parameters of single-layer latticed shells were introduced based on the stresses of latticed shells.The goal was set to homogenize the structural member configuration stiffness,and the section size of the latticed shell members as the optimization variable.The particle swarm optimization algorithm with improved inertia weight was used to optimize the member size of the latticed shell.The optimization results show that the configuration stiffness variance can accurately reflect the uniformity of the member configuration stiffness of the structures.The member configuration optimized by particle swarm optimization algorithm can make the reticulated shell structure close to equal stability and maximize the stability and ultimate bearing capacity of the structure.

关 键 词：单层网壳 杆件构形刚度参数 杆件构形刚度均匀化 粒子群优化算法 稳定承载力 

分 类 号：TU393.3[建筑科学—结构工程]