双坡变截面矩形框架梁内力计算探讨
- 摘 要
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庞国良 (锦州市建筑工程管理局 121000)曾 侠 (锦州市建筑设计研究院 121000)[提要] 将双坡变截面框架梁作为一整体单元,推导出其刚度矩阵和几种常见荷载作用下的固端弯矩,并编制成表,以方便计算。计算结果表明,即使坡度很小,特别是当荷载较复杂时,其对内力的影响也不能忽略。
[关键词] 双坡变截面 矩形框架梁 刚度矩阵 固端弯矩 内力
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