摘要
铸钢节点是树状柱结构承载的关键所在。为充分保证铸钢节点传力路径合理、承载力高且能克服传统设计带来的壁厚较大问题,提出一种拓扑优化与尺寸优化相结合的节点设计方法。利用拓扑优化获得满足强度与刚度要求的节点最优构型,通过截面尺寸优化减小节点壁厚,实现节点在满足承载力要求下的轻量化设计。在此基础上,结合某实际工程,进行具体优化设计。结果表明:经优化设计的铸钢节点与原节点相比,在正常使用状态下,最大应力降低8.97%,应力分布更加均匀,材料用量减少15.96%,且承载力满足要求,优化效果较为显著。
Cast-steel joint is the key to the bearing capacity of the tree column structures. In order that cast steel has the reasonable transmission path and bigger bearing capacity and overcomes thickness problem caused by the traditional design, this paper presented a method of cast-steel joints design which combined topology optimization with size optimization. With topology optimization was used to get the optimal configuration of joints which could meet the requirements of stiffness and strength and size optimization was used to reduce thickness of joints, the cast-steel joints could realize the lightweight design under the requirement of bearing capacity. On this basis, the concrete optimization design was carried out with a practical project. The results showed that the maximum stress decreased by 8.97% and the material consumption was reduced by 15.96% of the joint with optimization design compared with the original joint. In addition,the stress distribution was more uniform and joints could meet the bearing capacity requirements. The optimization effect was more significant,and this papers could provide a reference for the optimization design of the cast steel joints in engineering practice.
作者
王岳
王正中
张雪才
徐超
WANG Yue;WANG Zhengzhong;ZHANG Xuecai;XU Chao(Arid & Cold Regions Water Eng.Safety Research Center,Northwest A & F University,Yangling 712100,China;College Water Resources and Architectural Eng.,Northwest A&F University,Yangling 712100,China;Yellow River Engineering Consulting Co.Ltd,Zhengzhou 450003,China)
出处
《钢结构》
2018年第12期108-113,共6页
Steel Construction
基金
国家自然科学基金项目(51179164)
关键词
铸钢节点
树状柱
拓扑优化
结构优化设计
cast-steel joint
tree column structure
topological optimization
optimum structural design
