钢筋混凝土偏心受压构件挠曲二阶效应计算方法  

CALCULATION METHOD OF FLEXURAL SECOND-ORDER EFFECT FOR RC ECCENTRICALLY COMPRESSED MEMBER

作　　者：童岳生[1] 童申家[1] 

机构地区：[1]西安建筑科技大学,西安710055

出　　处：《工业建筑》2012年第10期53-57,88,共6页Industrial Construction

摘　　要：在设计中通过结构分析求出构件内力,对于有侧移的结构需考虑侧移及挠曲两种重力二阶效应的影响,对于无侧移的结构只有挠曲二阶效应的影响。一般结构分析求得的是构件端部内力,须在此基础上再分析由于构件挠曲是否会使构件中某个截面的弯矩大于杆端弯矩。对钢筋混凝土偏压构件的这种挠曲二阶效应计算问题从理论上做了分析说明,并将所得结果与有关规范的计算方法予以比较,以便加深理解及合理应用。In design the structural analysis is conducted to determine the internal forces of member,for unbraced structure the gravitational second-order effect due to structural sidesway and flexure of member must be considered,for braced structure the sidesway effect is not present.Commonly,in the structural analysis only the internal forces at ends of member are found,and so the following problem must be solved,whether the flexural second-order effect will cause the moment at some section larger than the moment at ends.The flexural second-order effect for RC eccentrically compressed member was researched theoretically,the obtained results were compared with those of design code for RC structures.

关 键 词：钢筋混凝土偏压构件 杆端内力 构件挠曲变形 挠曲二阶效应 

分 类 号：TU375[建筑科学—结构工程]