大跨度预应力混凝土曲线连续刚构桥施工控制方法研究

Method of Construction Control for Long-Span Prestressed Concrete Curved Continuous Rigid Frame Bridge

介绍了预应力混凝土曲线连续刚构桥施工控制的特点、原理和方法,根据划分的施工阶段,建立有限元模型,对该桥的施工过程进行仿真分析,通过有限元理论计算结果和施工过程中对主梁线形和内力监测结果的比较,验证了监控方法的有效性,为曲线预应力混凝土桥梁的安全施工和合理成桥状态提供了技术依据,同时给其它大跨度悬臂浇筑连续梁桥的施工控制提供借鉴和参考。

This paper introduces the characteristics, principles and methods of construction control of long - span prestressed concrete continuous rigid frame. Based on constructed stages the FEM simulation model is established. Through the theoretical calculations with finite element method and the monitoring observation of the deformation and the stress of the main beam, technical data are provided for the construction safety and for the reasonable state of the erected bridge with curved prestressed concrete beams, which may be used as reference for the construction of other large span cantilever cast continuous bridges.