摘要
对箱梁结构进行了一维梁杆系和三维实体单元的有限元分析比较,一维杆系有限元采用MI-DAS软件,三维实体空间分析采用ANSYS软件。通过改变结构几何参数(箱梁宽跨比、宽高比、箱梁腹板斜度、箱梁的上翼板承托等)分析了箱梁截面剪力滞效应影响,并得出一些有益结论:在箱梁几何因素中,结构的宽跨比b/l的影响是最突出的,其次是箱梁上翼缘板承托对剪力滞效应的影响也较为明显,承托水平尺寸的增加可以改善剪力滞效应状况,其它几何要素对结构固端的剪力滞效应影响不大。
The comparison between one-dimensional beam structure and 3D solid element is made on box girder with a finite dement analysis method. The analysis of one-dimensional beam structure is completed by employing MIDAS software, and the spatial analysis of 3D solid element is completed by employing ANSYS software. The shear-lag effect for box girder＇s cross section is analyzed, by change of structural parameters（ the width-length ratio, the width-height ratio, the slope of web, the support of upper wing panel）, and some valuable conclusions are drawn as follows： among the geometric factors of the box girder, the influence of width-length ratio b/l of structure is prominent, the influence of support of upper wing panel is also significant, yet the increase of support size can improve the shear-lag effect, and other geometric features affect less on the shear-lag effect of the solid end of structure.
出处
《水利与建筑工程学报》
2009年第1期29-31,共3页
Journal of Water Resources and Architectural Engineering
基金
甘肃省自然科学基金(0710RJZA049)
