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文章针对悬臂施工的预应力混凝土梁桥的特点,着重分析了施工过程中临时固结和体系转换对成桥线形的影响,提出了模拟临时固结的计算方法。并以某大型公路桥梁工程为例,结合其实际施工过程及使用工况,分阶段地对预应力桥梁进行了结构计算,列出了理论分析结果并与实测数值进行了比较.为同类桥梁的结构分析提供技术参考。
In this paper, according to the characteristics of prestressed concrete girder bridge with cantilever construction, the influence of temporary consolidation and system conversion on the alignment of the bridge during construction is analyzed emphatically. A calculation method to simulate temporary consolidation is proposed. Taking a large highway bridge as an example, the structure calculation of prestressed bridges is carried out in stages according to the actual construction process and working conditions, and the theoretical analysis results are listed and compared with the measured values. Structural Analysis provides a technical reference.