- 摘 要
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肖建春 馬克儉 （貴州工業(yè)大學(xué)空間結(jié)構(gòu)研究所 550003）董石麟 （浙江大學(xué)土木系 杭州 310027）
[提要] 根據(jù)結(jié)構(gòu)等效原則推導(dǎo)出空腹網(wǎng)架擬交叉梁系法中折算剪切剛度的計算公式。該式考慮了面板的作用和上、下弦層構(gòu)件不對稱的影響，擴(kuò)大了空腹網(wǎng)架擬交叉梁系法的適用范圍。還提供了一個空腹夾層板的折算剪切剛度計算式，除考慮上述因素外，還計及了剪力鍵的剪切變形影響，不僅適用于空腹夾層板的I型板，還適用于Ⅱ型板。分析表明，公式均具有較好的精度。
[關(guān)鍵詞] 空腹網(wǎng)架 空腹夾層板 折算剪切剛度A new equivalent shear strength formula for open-web lattice grids by using intersection beam analogy
method is developed. The effects of upper slabs and unsylnmetrical section are considered in the formula. It can be used to analysis common open-web lattice grids. An equivalent shear strength formula for open-web sandwich plate is also given by using sandwich plate analogy method, in which the effect of shear strain of blocks is considered. Examples show the formulae have higher accuracy.
Keywords: open-web lattice grids; open-web sandwich plate; equivalent shear strength
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