【摘要】 用考虑收缩、徐变和交接面滑移后的组合梁长期挠度计算方法对实际工程中的两根典型组合梁进行了长期挠度计算,并将岩土工程分析软件FLAC3D应用于组合梁的滑移面模拟,对计算数据、现场实测数据及计算机模拟分析结果进行了分析比较.实测及计算结果均表明,用现行规范中的计算方法将使组合梁的长期挠度计算值偏小,本文的研究方法可以用来计算组合梁的长期挠度.根据分析结果,提出了对组合梁在设计及施工时的一些建议.更多还原

【Abstract】 Long-term deflection computations of two typical built-up beams in a actual project were carried out by a built-up beam long-term deflection computational method considering contraction,creep and composition plane slipping.The crag earth project analysis software FLAC3D was used to the built-up beam slip-surface simulation,and the calculated,measured and computer simulated data were compared subsequently.The results show that the proposed method is fit for calculating the long-term deflection.Some advices are also proposed for the design and construction of composite beams.更多还原