（1 哈尔滨工业大学深圳研究生院， 深圳 518055； 2 沈阳远大铝业工程有限公司， 沈阳 110000；3 中建钢构有限公司， 深圳 518054）

［摘要］焊接残余应力对焊接构件的性能具有重要影响，直接关系到工程质量的好坏、结构的安全。对已受荷载作用的结构一般须避免再行焊接，若不得已需对受荷结构施焊，则须了解焊接过程中温度场的变化和应力场的变化。基于热弹塑性理论，利用MSC.MARC软件中的热-结构耦合功能，对深圳平安金融中心幕墙连接件与受力状态下主体钢结构焊接过程进行数值模拟，分析焊接过程中温度场的变化和应力场的变化，得到最终残余应力的分布规律，给出了主体钢结构受残余应力影响范围。

［关键词］焊接数值模拟； 焊接残余应力； 幕墙连接件； MSC.MARC;  温度场； 应力场 

中图分类号：TU391文献标识码：A文章编号：1002-848X(2017)23-0050-05

Analysis of welding effect of curtain wall connectors in Ping An Financial Center in Shenzhen

Lu Xingcun1, He Fuqiang2, Zhang Wenkai2, Zhang Chunhai2, Lin Maowen1, Gu Lei1,3

(1 Harbin Institute of Technology, Shenzhen Graduate School, Shenzhen 518055, China; 2 Shenyang Yuan Da Aluminium Industry Engineering Co.,  Ltd.,  Shenyang 110000, China;3 China Construction Steel Structure Co., Ltd., Shenzhen 518054, China)

Abstract:The welding residual stress has an important influence on the performance of the welded components, and it′s directly related to engineering quality and the safety of the structure. Welding is generally avoided for a structure under loading. The change of temperature and stress field during welding process need be investigated when this type of welding really have to be chose. Based on thermo elasto-plastic theory, the thermal-mechanical coupling function in MSC.MARC software was used to conduct numerical simulation on the welding process of curtain wall connectors with the main steel structure of Ping An Finance Center under loading state. The change of temperature field and stress field in the process of welding were analyzed to obtain the final distribution of residual stress and provide influential area of residual stress on main steel structure.

Keywords:welding numerical simulation; welding residual stress; curtain wall connector; MSC.MARC; temperature field; stress field

作者简介：卢星存，硕士，Email：civic123@sina.com。