雅安天全体育馆索穹顶节点拓扑优化探究  

Topology optimization of cable dome nodes in Ya’an Tianquan Gymnasium

作　　者：周玥丞 赵阳[1] 向新岸[2] ZHOU Yue-cheng;ZHAO Yang;XIANG Xin-an(Space Structures Research Center,Zhejiang University,Hangzhou 310058,China;China Southwest Architectural Design and Reseavch Institute Co.,LTD,Chengdu 610041,China)

机构地区：[1]浙江大学空间结构研究中心,浙江杭州310058 [2]中国建筑西南设计研究院有限公司,四川成都610041

出　　处：《空间结构》2021年第3期74-80,52,共8页Spatial Structures

基　　金：国家自然科学基金项目(51778567,52078452)。

摘　　要：运用基于变密度法的Solidthinking软件和基于双向渐进结构优化法的Ameba软件分别对雅安天全体育馆索穹顶结构中的外脊索节点进行拓扑优化,并对原始节点和优化节点的受力性能进行数值模拟.结果表明,对于索杆结构中耳板较大、可优化区域较少的节点,可以通过在非设计区域放弃部分耳板,扩大核心区域,以增大可优化区域,获得较好的优化结果.拓扑优化技术能够显著减少原始节点在最不利工况下的低效单元,减少节点质量,获得受力性能合理、外形新颖美观的优化节点.文中还简要讨论了利用增材制造技术实现拓扑优化设计的途径,增材制造与拓扑优化技术的联合运用有望在土木工程领域发挥重要作用.Two kinds of software,Solidthinking which is based on variable density method and Ameba which is based on bi-directional evolutionary optimization method,are used in topology optimization for the outer ridge node in the cable dome structure of Ya’an Tianquan Gymnasium.The mechanical properties of the original and optimized nodes are analyzed by numerical simulation.It is shown that for the nodes with large ear plate and small optimizable region in the cable-strut structure,part of ear plate could be abandoned and the core region could be expanded to increase the optimization area and obtain better optimization results.Topology optimization technology can significantly reduce low efficiency unit under the worst load case,reduce the node weight,and obtain a reasonable and nice-looking redesigned node.Moreover,the approach to realize topology optimization design by additive manufacturing technology is briefly discussed.The combination of topology optimization and additive manufacturing is expected to play a vital role in civil engineering.

关 键 词：索穹顶结构 索杆结构 节点 拓扑优化 增材制造 

分 类 号：TU394[建筑科学—结构工程]