作　　者： ; ; ; ;

机构地区： 华南理工大学建筑学院

出　　处： 《科学技术与工程》 2008年第1期263-268,共6页

摘　　要： 湛江海湾大桥钢主梁采用全空腹钢箱梁。在悬臂拼装过程中,由于作用的荷载不同,被吊梁段与吊机作用梁段的变形明显不同。建立空间有限元模型,分析了悬臂拼装阶段截面变形和温度对截面变形的影响。分析结果表明,在大跨度斜拉桥中采用全空腹钢箱梁是可行的,并且温度对悬臂拼装阶段箱梁截面相对变形的影响较小。 Flat hollow steel box girder with truss-type diaphragms and internal webs are adopted in Zhanjiang Bay Bridge. The section deformation of the box girder is obviously different between the girder segment to be hoisted and the cantilever system supporting the walking crane during the cantilever erecting due to different applied loads. 3D finite element models for girder segments are developed. The section deformations of the box girder and the temperature influence are computed. Analysis results show that it is feasible to adopt the steel box girder with truss-type diaphragms an to the relative deformatio d internal webs in long span cable-stayed bridges, and the temperature has little influence n of the box girder.

关 键 词： 斜拉桥 钢箱梁 截面变形 温度影响

领　　域： [建筑科学]