雙坡變截面矩形框架梁內(nèi)力計算探討
龐國良 曾 俠
- 摘 要
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龐國良 (錦州市建筑工程管理局 121000)曾 俠 (錦州市建筑設(shè)計研究院 121000)[提要] 將雙坡變截面框架梁作為一整體單元,推導(dǎo)出其剛度矩陣和幾種常見荷載作用下的固端彎矩,并編制成表,以方便計算。計算結(jié)果表明,即使坡度很小,特別是當荷載較復(fù)雜時,其對內(nèi)力的影響也不能忽略。
[關(guān)鍵詞] 雙坡變截面 矩形框架梁 剛度矩陣 固端彎矩 內(nèi)力
The formulas of stiffness matrix and bending moments of fixed ends under some common loads of rectangular frame beam with double slopes are derived as a whole element. According to the calculation, the influence of slope of beam, on internal force is not negligible, specially, under complicated conditions.
Keywords: double slopes; variable section; rectangular frame beam; stiffness matrix;internal force