基于拓扑优化的铸钢节点优化设计方法
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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.
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.
引文
[1] 徐超,王正中,刘铨鸿,等.考虑稳定性的树状结构形态布局优化研究[J].建筑结构学报,2018,39(6):61-68.
[2] 陈志华,姜玉挺,马书飞,等.天津国家会展中心中央入口大厅树状结构优化分析[J].空间结构, 2016, 22(4): 44-50.
[3] 杨渊,陈志华,马克俭,等.铸钢结构设计与工程应用[J].建筑结构,2016,46(7):44-51.
[4] ZHAO X L,TONG L W. New Development in Steel Tubular Joints[J]. Advances in Structural Engineering, 2011, 14(4): 699-715.
[5] TONG L W, ZHENG H Z, CHEN Y Y. Comparison Between a Cast Steel Joint and a Welded Circular Hollow Section Joint[J]. Welding in the World, 2006,50: 478-483.
[6] 中国工程建设协会标准.铸钢节点应用技术规程:CSCE 235∶2008[S].北京:中国建筑工业出版社,2008.
[7] 刘继鹏,魏杰.建筑用铸钢节点的铸造工艺研究[J].热加工工艺,2015,44(5):13-14.
[8] 朱文伟,王剑非,苏兰忠,等.曲靖体育场铸钢节点安装控制技术[J].施工技术,2016,45(2):40-42.
[9] 罗永峰,朱威,马永兴, 等.虹桥高铁无柱雨棚铸钢节点的有限元分析及试验研究[J].结构工程师,2011,27(1):126-133.
[10] 李国强,周观根,蔡建良,等.大连国际会议中心复杂空间节点设计与有限元分析[J].空间结构,2011,17(3):55-60.
[11] 王梦磊. 南昌西火车站Y型铸钢节点静力性能试验研究[D].合肥:合肥工业大学,2013.
[12] 印长磊. 飞机机翼结构型式的拓扑优化[D].南京: 南京航空航天大学,2014.
[13] 郑文杰,兰凤崇,陈吉清.FSAE赛车车架结构拓扑优化及轻量化设计研究[J].汽车工程学报,2016,6(1):35-42.
[14] 朱军祚,王正中,方寒梅, 等.拓扑优化在大型弧形钢闸门优化布置中的应用[J].人民黄河,2007(6):63-64.
[15] 赵冰,陈天一.拓扑优化在建筑设计中的应用[J].建筑与文化,2016(11):104-105.
[16] PENG X R. Structural Topology Optimization Method for Morphogenesis of Dendriforms[J]. Open Journal of Civil Engineering, 2016(6):526-536.
[17] 武岳,张建亮,曹正罡.树状结构找形分析及工程应用[J].建筑结构学报,2011,32(11):162-168.
[18] 杜文风, 孙志飞, 高博青, 等. 树状结构三分叉铸钢节点有限元分析[J]. 建筑结构学报, 2014, 35(增刊1): 89-93.
[19] 赵宪忠,沈祖炎,陈以一.建筑用铸钢节点设计的若干关键问题[J]. 结构工程师, 2009, 25(4):11-18.
[20] 杜文风, 孙云, 刘琦, 等. 轴力作用下铸钢三分叉节点承载力与实用计算式研究[J]. 空间结构, 2017, 23(2): 60-69.
[2] 陈志华,姜玉挺,马书飞,等.天津国家会展中心中央入口大厅树状结构优化分析[J].空间结构, 2016, 22(4): 44-50.
[3] 杨渊,陈志华,马克俭,等.铸钢结构设计与工程应用[J].建筑结构,2016,46(7):44-51.
[4] ZHAO X L,TONG L W. New Development in Steel Tubular Joints[J]. Advances in Structural Engineering, 2011, 14(4): 699-715.
[5] TONG L W, ZHENG H Z, CHEN Y Y. Comparison Between a Cast Steel Joint and a Welded Circular Hollow Section Joint[J]. Welding in the World, 2006,50: 478-483.
[6] 中国工程建设协会标准.铸钢节点应用技术规程:CSCE 235∶2008[S].北京:中国建筑工业出版社,2008.
[7] 刘继鹏,魏杰.建筑用铸钢节点的铸造工艺研究[J].热加工工艺,2015,44(5):13-14.
[8] 朱文伟,王剑非,苏兰忠,等.曲靖体育场铸钢节点安装控制技术[J].施工技术,2016,45(2):40-42.
[9] 罗永峰,朱威,马永兴, 等.虹桥高铁无柱雨棚铸钢节点的有限元分析及试验研究[J].结构工程师,2011,27(1):126-133.
[10] 李国强,周观根,蔡建良,等.大连国际会议中心复杂空间节点设计与有限元分析[J].空间结构,2011,17(3):55-60.
[11] 王梦磊. 南昌西火车站Y型铸钢节点静力性能试验研究[D].合肥:合肥工业大学,2013.
[12] 印长磊. 飞机机翼结构型式的拓扑优化[D].南京: 南京航空航天大学,2014.
[13] 郑文杰,兰凤崇,陈吉清.FSAE赛车车架结构拓扑优化及轻量化设计研究[J].汽车工程学报,2016,6(1):35-42.
[14] 朱军祚,王正中,方寒梅, 等.拓扑优化在大型弧形钢闸门优化布置中的应用[J].人民黄河,2007(6):63-64.
[15] 赵冰,陈天一.拓扑优化在建筑设计中的应用[J].建筑与文化,2016(11):104-105.
[16] PENG X R. Structural Topology Optimization Method for Morphogenesis of Dendriforms[J]. Open Journal of Civil Engineering, 2016(6):526-536.
[17] 武岳,张建亮,曹正罡.树状结构找形分析及工程应用[J].建筑结构学报,2011,32(11):162-168.
[18] 杜文风, 孙志飞, 高博青, 等. 树状结构三分叉铸钢节点有限元分析[J]. 建筑结构学报, 2014, 35(增刊1): 89-93.
[19] 赵宪忠,沈祖炎,陈以一.建筑用铸钢节点设计的若干关键问题[J]. 结构工程师, 2009, 25(4):11-18.
[20] 杜文风, 孙云, 刘琦, 等. 轴力作用下铸钢三分叉节点承载力与实用计算式研究[J]. 空间结构, 2017, 23(2): 60-69.