建筑结构学报2024，Vol.45Issue(6)：203-212,10.DOI:10.14006/j.jzjgxb.2023.0003
单层空间网格结构刚性节点的衍生式生成方法研究
Research on generative generation of rigid joints in single-layer spatial grid structures
摘要
Abstract
The joints of the single-layer free-form spatial grid structure are the most concentrated parts of the structure,and should have reasonable configurations and excellent mechanical performances.At present,the most widely used rigid joints in single-layer spatial grid structures are of single type,have large deadweight,are prone to stress concentration,and have uneven joint quality.This paper proposes a generative generation method for rigid joints of single-layer spatial grid structures.Firstly,the basic principle of generative generation method is introduced,and its mathematical model is given.Secondly,based on the generative generation method,the diversified design results of the new rigid joint configurations of single-layer spatial grid structures with different reserved masses,circumferential symmetry constraints and changed reserved geometry are obtained.Then,the static performance of the new rigid joint configuration is compared with that of the traditional welded hollow spherical joints.The results show that the generative generation method has a strong exploration and innovation ability,and the new rigid joints obtained are novel in shape,and are light and beautiful.Compared with the traditional welded hollow spherical joint,the mass,the maximum equivalent stress and the maximum displacement can be reduced by 57.1％,29.13％and 36.36％,respectively.The generative generation method proposed in this paper can realize the diversified design of single-layer spatial grid structure joints that are lightweight,high-strength,safe and beautiful.关键词
空间网格结构/刚性节点/衍生式设计/拓扑优化/刚性连接Key words
spatial grid structure/rigid joint/generative design/topology optimization/rigid connection分类
建筑与水利引用本文复制引用
刘峰成,冯若强,吕召能,王琨,杨洋,居永军..单层空间网格结构刚性节点的衍生式生成方法研究[J].建筑结构学报,2024,45(6):203-212,10.基金项目
国家自然科学基金青年基金项目(52308213),江苏省自然科学基金青年基金项目(BK20220593),教育部"春晖计划"合作科研项目(HZKY20220166),江苏省高等学校基础科学(自然科学)研究项目(22KJB560033),扬州市科技计划项目(YZ2022058). （52308213）
