摘要
以黄埔大桥北汊桥独塔双索面扁平钢箱梁斜拉桥为工程背景,采用索-梁-板壳混合单元建立梁段的三维有限元模型,分别分析了扁平钢箱梁吊点处和非吊点处横隔板在运营阶段8车道车辆荷载作用下的受力行为,得到横隔板应力分布的规律;通过分析顶底板加劲肋、索力对横隔板受力的影响,提出了较合理的开孔洞的位置。以非吊点处横隔板为例,分析了横隔板在各种加劲肋的布置下的稳定性,提出了较为合理经济的加劲肋布置方案,供大跨度斜拉桥钢箱梁设计参考。
The static behavior of diaphragms in hunging point and unhunging point respectively by mixed finite element model under 8-lane traffic load of the north channel bridge of Zhujiang Huangpu Bridge was studied;factors influencing the behavior of diaphragms such as stiffeners in both top and bottom plate and cable force were analyzed;reasonable hole position in diaphragm was proposed.After comparison of the stability of diaphragm with different stiffeners distribution,a reasonable and economical stiffeners setting scheme was presented to enhance the stability of diaphragm in unhunging point under vehicle loads.
出处
《重庆交通大学学报（自然科学版）》
CAS
北大核心
2011年第2期204-208,339,共6页
Journal of Chongqing Jiaotong University(Natural Science)
关键词
扁平钢箱梁
横隔板
有限元
应力分布
加劲肋布置
flat steel box girder
diaphragm
finite element method
stress distribution
stiffeners setting
