大跨空间管桁架结构关键构件判别方法研究*
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（1 南京市建筑设计研究院有限责任公司，南京 210005； 2 东南大学土木工程学院，南京 210096）
［摘要］在总结现有关键构件判别方法的基础上，归纳了大跨空间管桁架结构关键构件判别方法应满足的要求，从而提出了基于结构应变能的关键构件判别方法。运用ANSYS有限元程序和MATLAB软件实现了基于结构应变能的关键构件判别。通过数值模拟分析，验证了基于结构应变能的关键构件判别方法不仅适用于设固定铰支座的大跨空间管桁架结构，还适用于设弹性支座的大跨空间管桁架结构。［关键词］大跨空间管桁架结构; 关键构件; 判别方法; 结构应变能中图分类号：TU393.3 文献标识码：A 文章编号：1002-848X(2015)15-0017-05
Research on the key component identification method of large-span spatial pipe truss structureYu Guanqun1, Shu Ganping2, Xia Yue1(1 Nanjing Architectural Design and Research Institute Co., Ltd., Nanjing 210005, China; 2 College of Civil Engineering, Southeast University, Nanjing 210096, China)Abstract: On the basis of the existing methods for key component identification, the requirements of key component identification methods for large-span spatial pipe truss structure were summarized, and the method for identifying key components based on structural strain energy was put forward. The key component identification was realized by finite element software ANSYS and MATLAB language based on structural strain energy. Numerical analysis results demonstrate that the method is applicable not only to the fixed hinge support, but also to the elastic support in the large-span spatial pipe truss structure.Keywords:large-span spatial pipe truss structure; key component; identification method; structural strain energy
*国家自然科学基金（51178098）。作者简介：余冠群，硕士，Email: 445633294@qq.com。
