预应力混凝土边梁协调扭转的分析  

ANALYSIS OF COMPATIBILITY TORSION FOR PRESTRESSED CONCRETE EDGE GIRDERS

作　　者：王春武[1] 

机构地区：[1]扬州大学建筑科学与工程学院,扬州225009

出　　处：《工业建筑》2007年第10期42-45,共4页Industrial Construction

基　　金：江苏省教育厅自然科学基金资助项目(UK0510064)

摘　　要：通过对协调扭转的各种典型设计方法的适用性进行比较,指出对于不同的结构,必须合理选用相应的协调扭转分析方法。对承受较大协调扭矩作用的预应力混凝土边梁,协调扭矩的计算可根据不同阶段的受力特点采用其相应的变刚度。同时对次梁、板与边主梁截面形心相对位置的影响进行探讨,指出预压力对边梁抗扭承载力的影响。结合工程实例的有限元分析,说明此类结构的设计要点。　The applicabilities of several typical analysis methods for compatibility torsion are compared to each other.Applicable analysis methods must be chosen rationally for different structures.For prestressed concrete edge girders which are subjected to great compatibility torsion,an analytical method based on variational stiffness is proposed which discounts the component＇s elastic stiffness based on the performance in different loading case.The effect of section positions of slabs and secondary beams with edge girders is investigated.The effect of torsion carrying capacity owing to prestressed pressure is presented.Crucial points for this kind of structure design are illuminated,combined with finite element analysis of engineering examples.

关 键 词：结构 预应力 边梁 次梁 协调扭转 阻扭效应 

分 类 号：TU378.2[建筑科学—结构工程]