混凝土结构单向板与双向板区分界限的研究  

The criterion of distinguishing one-way and two-way concrete slabs

作　　者：李传才[1] 向贤华 张欣[3] 

机构地区：[1]武汉大学,武汉430072 [2]铁道第四勘测设计院,武汉430063 [3]中南电力设计院,武汉430071

出　　处：《土木工程学报》2006年第3期62-67,75,共7页China Civil Engineering Journal

摘　　要：梁板结构设计时一般按边长比等于2区分成单向板或双向板计算。这个区分界限是依据20世纪20年代德国学者MarcusH提出的十字交叉板带的简化模型分析的结果确定的。由于简化的模型不能精确的反映板的受力特征,不能反映荷载及内力沿板的两个方向的真实传递情况,因此用这种模型分析的结果确定的界限也是不确切的。本文应用弹性理论及其有限元方法,建立四边支承板的整板计算模型,分析其荷载和内力沿两个方向的传递和分配规律,从而说明以Marcus的板带法作为区分单双向板的界限存在的问题。以本文的分析结果作为依据,作者提出了区分单双向板的界限并对板的工程设计提出了具体的建议。In designing rectangular concrete slabs supported on four sides, the ratio of the long-side length and the short-side length equal to 2 is used as the criterion to distinguish the design as one-way or two-way slab. This criterion is the result due to the cross slab strip analysis initiated by the German scholar H. Marcus, which could not precisely reflect the actual load transfer in the two directions, thus the criterion resulted is not accurate . This paper analyzed the load transfer in the long-side direction and the short-side direction of a slab support on all four sides by theory of elasticity and FEM, and proposed a criterion to distinguish the one-way and two-way slab design, besides making suggestions on slab design in general.

关 键 词：梁板结构 混凝土结构 有限单元法 弹性板 

分 类 号：TU375.2[建筑科学—结构工程]