作　　者： ;

机构地区： 佛山大学理学院

出　　处： 《中国公路学报》 1998年第1期63-70,共8页

摘　　要： 应用作者建立的有限段模型，对变截面多跨箱梁桥进行剪滞效应分析。探讨了变截面箱梁桥剪滞效应随梁的梁高比ｈ／Ｈ和宽跨比ｂ／Ｌ以及荷载形式等因素变化的影响，并编制了实用图表，可供工程设计参考。本文的计算结果与模型试验结果以及其它方法分析值作了比较，吻合良好。为变截面连续梁桥或刚构桥的剪滞计算提供了重要资料。 On the basis of the variational principle, the governing differential equations including the shear lag effects in box girders have been established. The homogeneous solutions of the differential equations are taken as the displacement functions of a finite segment. A finite segment method is applied to calculate the shear lag effects of continuous box girder bridges with variable depth. The influences of two main parameters, such as the ratio of height between span center and support of the box girder (h/H) and the fange width to length ratio (b/L), upon the shear lag effect are investigated. some diagrams are presented for the convenience of calculating shear lag on box girders with variable depth. To verify the accuracy and applicability of the present theory, comparisons of results for typical model test and numerical examples are given.

关 键 词： 变截面箱梁 剪滞效应 有限段模型 箱梁桥

领　　域： [建筑科学] [交通运输工程]