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Calculation model simplification of main beam in concrete monolithic ribbed floor
Author(s): 
Pages: 82-86
Year: Issue:  5
Journal: ENGINEERING JOURNAL OF WUHAN UNIVERSITY

Keyword:  混凝土结构肋形结构主梁;
Abstract: 当主梁与柱的线刚度比大于某定值(3、4或5)时,混凝土整体式肋形结构中的主梁可简化为以柱为铰支座的多跨连续梁进行内力计算.对连续梁和框架两种小同的计算模型,分别计算了在不同的梁柱线刚度比k情况下控制截面的内力,得到了不同跨数、不同荷载布置下的k~β曲线.经比较分析认为:当k≥4时,主梁可简化成连续梁计算,此时两种计算模型控制截面内力的误差β均小于10%.本研究成果为肋形结构中主梁计算模型的简化问题作了详尽的说明.
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