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首页> 外文会议>International Conference on Civil Engineering,Architecture and Building Materials >Study on Ultimate Load-Carrying Capacity of Long-Span Composite Girder Cable-Stayed Bridge with Three Pylons
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Study on Ultimate Load-Carrying Capacity of Long-Span Composite Girder Cable-Stayed Bridge with Three Pylons

机译：三塔塔跨跨度复合梁斜拉桥终极承载能力研究

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摘要

Taking a long-span composite girder cable-stayed bridge with three pylons under construction as the object of research, this paper establishes a three-dimensional finite element model of a bridge considering the geometric nonlinearity, material nonlinearity and interface slip effect in composite girder, and analyzes the failure loads and failure modes of the structure at bearing capacity limited state. The results show that the ultimate load-carrying capacity is high at bearing capacity limited state, load case whose live load acts on one main span is more unfavorable, and according to the structural failure modes, increasing the ability of the middle pylon to resist bending moment can improve the ultimate load-carrying capacity of the whole bridge quickly.
机译：采用跨跨度复合梁斜拉桥，采用三个定向塔作为研究对象，建立了考虑到复合梁中的几何非线性，材料非线性和界面滑动效果的桥梁三维有限元模型，并分析轴承容量有限状态下结构的故障载荷和故障模式。结果表明，轴承容量有限的状态高，载荷容量高，负荷作用在一个主跨度的装载箱更具不利，并且根据结构故障模式，增加中间塔抗弯曲的能力瞬间可以快速提高整个桥梁的最终承载能力。

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