李平昌   白绍良   王志军
    （重庆大学土木工程学院 400045）

[提要]  现浇钢筋混凝土楼盖边主梁考虑协调扭转的分析和设计方法是工程设计中有待进一步解决的问题之一。针对能体现常用的单向板主次梁体系和双向板主次梁体系受力特点的结构模型，建立了带板单元的空间梁系有限元分析模型，分析了现浇板的有无、现浇板与梁的相对位置以及板厚和次梁截面高度对边主梁协调扭矩的影响。所给出的扭矩变化规律对工程界从概念上作出合理判断有参考价值。
[关键词]  钢筋混凝土  现浇楼盖  边主梁  协调扭转  板  阻扭效应

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