考虑材料相对滑移的钢管混凝土拱桥非线性分析理论

Considering the Material Non-linearity Analysis Theory of the Relative Glide of CFST Arch Bridge

针对当前大跨径钢管混凝土拱桥的不断修建,考虑到钢管与核心混凝土间相对滑移的非线性影响,从理论上提出了大跨径钢管混凝土拱桥的拱圈材料的非线性分析。同时,利用空间三维有限元子域法对拱圈建立起模型,并给出相应的解决步骤。

Viewing the continual construction of Long-Span Concrete-Filled Steel Tube Arch Bridge and considering non-linearity effect caused by slip between the steel tube and the core concrete, non-linearity analysis on the material of the arch ring of Long-Span Concrete-Filled Steel Tube Arch Bridge is put forward. Moreover, three-dimensional finite element model is set up to simulate the arch ring, and the measures relevant are also raised.