- 摘 要
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李從林 程耀芳
（蘭州鐵道學(xué)院 730070）[提要] 提出筒中筒結(jié)構(gòu)在扭矩作用下的超元法，即是對外框筒及樓板連續(xù)化處理以后，視整個(gè)結(jié)構(gòu)為一個(gè)懸臂桿，然后按樓層劃分成超級單元，導(dǎo)出超級單元的剛度矩陣，用矩陣位移法分析。用該法分析變剛度筒中筒結(jié)構(gòu)的扭轉(zhuǎn)問題，自由度很少，計(jì)算簡便。
[關(guān)鍵詞] 筒中筒結(jié)構(gòu) 變剛度 超級單元 矩陣位移法Super element method which is simpler in claculation for analyzing tube-in -tube structures with variable stiffness along the height subjected to sorsion is presented, ie, after treatment of the structure system with continuum technique, the whole structure is divided into super elements and is then analyzed by the matrix displacement method. The super element stiffness matrix of the structure is derived.
Keywords: tube-in-tube structures; variable stiffness; super element; matrix displacement method
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