大跨空間管桁架結(jié)構(gòu)關(guān)鍵構(gòu)件判別方法研究*
余冠群1，舒贛平2，夏樂1
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（1 南京市建筑設(shè)計研究院有限責(zé)任公司，南京 210005； 2 東南大學(xué)土木工程學(xué)院，南京 210096）
［摘要］在總結(jié)現(xiàn)有關(guān)鍵構(gòu)件判別方法的基礎(chǔ)上，歸納了大跨空間管桁架結(jié)構(gòu)關(guān)鍵構(gòu)件判別方法應(yīng)滿足的要求，從而提出了基于結(jié)構(gòu)應(yīng)變能的關(guān)鍵構(gòu)件判別方法。運(yùn)用ANSYS有限元程序和MATLAB軟件實(shí)現(xiàn)了基于結(jié)構(gòu)應(yīng)變能的關(guān)鍵構(gòu)件判別。通過數(shù)值模擬分析，驗證了基于結(jié)構(gòu)應(yīng)變能的關(guān)鍵構(gòu)件判別方法不僅適用于設(shè)固定鉸支座的大跨空間管桁架結(jié)構(gòu)，還適用于設(shè)彈性支座的大跨空間管桁架結(jié)構(gòu)。［關(guān)鍵詞］大跨空間管桁架結(jié)構(gòu); 關(guān)鍵構(gòu)件; 判別方法; 結(jié)構(gòu)應(yīng)變能中圖分類號：TU393.3 文獻(xiàn)標(biāo)識碼：A 文章編號：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
*國家自然科學(xué)基金（51178098）。作者簡介：余冠群，碩士，Email: 445633294@qq.com。
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