- 摘 要
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李平昌 白紹良 王志軍
（重慶大學(xué)土木工程學(xué)院 400045）[提要] 現(xiàn)澆鋼筋混凝土樓蓋邊主梁考慮協(xié)調(diào)扭轉(zhuǎn)的分析和設(shè)計方法是工程設(shè)計中有待進一步解決的問題之一。針對能體現(xiàn)常用的單向板主次梁體系和雙向板主次梁體系受力特點的結(jié)構(gòu)模型，建立了帶板單元的空間梁系有限元分析模型，分析了現(xiàn)澆板的有無、現(xiàn)澆板與梁的相對位置以及板厚和次梁截面高度對邊主梁協(xié)調(diào)扭矩的影響。所給出的扭矩變化規(guī)律對工程界從概念上作出合理判斷有參考價值。
[關(guān)鍵詞] 鋼筋混凝土 現(xiàn)澆樓蓋 邊主梁 協(xié)調(diào)扭轉(zhuǎn) 板 阻扭效應(yīng)Reasonable analysis and design of the cast-in-place edge girder in reinforced concrete floors taking into account effect of compatible torsion are desirable in engineering practice. Based on the structure model representing characteristics of the commonly used one-way or two-way slabs, an analytical finite element model of 3D beam system with shell elements is proposed. Effect of slabs, position of the beam, slab thickness, and section depth of the secondary beam on the compatible torque in the edge girder is investigated.The recognized characteristics of variation of the torque are helpful in rea-sonable judgement in engineering.
Keywords: cast-in-place reinforced concrete floor; compatible torsion; edge girder; torque-resistant effect; slabs
