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为探讨和分析悬臂施工预应力混凝土连续梁桥的受力特点,本文结合某悬臂施工预应力混凝土连续梁桥的施工流程,采用基于平面杆系理论的大型通用有限元分析软件对其施工阶段及成桥状态进行了受力分析。计算综合考虑了基础不均匀沉降、初始预应力、混凝土收缩徐变以及结构温差等的作用。结果表明各项指标均满足规范要求,说明各设计参数均较合理。
In order to discuss and analyze the mechanical characteristics of prestressed concrete continuous girder bridge with cantilever construction, this paper combines the construction process of prestressed concrete continuous girder bridge with cantilever construction, and uses the large general finite element analysis software based on plane rod theory to analyze the construction stage and Bridge into force analysis. The calculation takes into account the effects of uneven foundation settlement, initial prestress, shrinkage and creep of concrete, temperature difference of structure and so on. The results show that the indicators meet the requirements of the specification, indicating that the design parameters are more reasonable.