用变分法分析预应力钢-混凝土组合T梁的剪力滞效应

由于预应力钢 混凝土组合结构有着跨越能力强、自重小、刚度大、造价低、便于施工等优点,对于这类结构的研究,国内外学者都做了一定的工作。但在我国这类结构的研究还没能达到广泛应用的程度。在用弯矩曲率法分析或用简化公式进行计算时必须考虑T梁翼缘混凝土板的剪力滞后现象,用变分法能有效地分析其剪力滞效应。

Analysis of Shearing Force's Lag Effect of Prestressed Steel-concrete Composite T Beam by Variational Method

Because the prestressed steel-concrete composite construction has merits of large spanning ability,light weight,big rigidity,low cost,easy to be constructed and so on,the scholars at home and abroad have done a lot of works in this field.But the research work on this kind of structure still has not been applied in China.The shearing force's lag phenomenon of T beam's flange slab should be considered by using moment-curvature method analysis and abbreviated formula calculating.This paper presented the variational method which can analysis the shearing force's lag effect effectively.