摘要
介绍了一种整体局部模型的分析方法对钢桥面铺装进行力学研究,即分别建立整桥、局部梁段、正交异性板桥面铺装的三维有限元模型,通过边界条件的设置,将整桥力学分析的结果移植到正交异性板桥面铺装模型中.研究结果表明,考虑悬索桥桥型特点计算的铺装层最大纵向拉应力比以往局部模型的计算结果大12.6%左右,这是由于悬索桥主梁和桥面铺装活载挠度大于一般连续梁桥的结构特点所致.桥面铺装力学分析方法能较为准确地反映桥面铺装在整桥力学环境下的受力特点.
A kind of new global-local model is proposed to study the steel bridge deck surfacing system. Three dimension FEM（ finite element method） model of the global bridge, local box-girder and local orthotropic steel deck are set up separately, then the static calculation results of the global bridge are transferred to the model of the local orthotropic steel deck through the set-up of boundary conditions. The research results show that the maximum, longitudinal tensile stress of surfacing calculated in view of bridge type of suspension is 12. 6% more than the old research results. The mechanical analysis method proposed is more close to the actual work condition of the steel deck surfacing.
出处
《东南大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2006年第4期601-604,共4页
Journal of Southeast University：Natural Science Edition
关键词
悬索桥
正交异性钢桥面板
桥面铺装
有限元方法
suspension bridge
orthotropic steel decks
surfacing
finite element method
