大跨度曲线刚构—连续组合梁桥施工控制分析

On Controlling Analysis of the Construction of Large Span Curved Rigid Frame-Continuous Combined Girder Bridge

介绍自校正调节控制原理在桥梁工程中的应用。以变高度预应力混凝土刚构—连续组合梁桥——武东大桥为例,全桥平面位于1000m圆曲线上,通过采用结构空间受力分析与现场实测相结合的方式,分析曲线梁桥挠度控制影响因素,重点阐述了曲率对横向变形的影响。

The principle of self-turning regulation controlling applied in the bridge engineering was introduced in this paper. With an example of Wudong Bridge (variable height prestressed concrete rigid frame-continuous combined girder bridge), the plane of the total bridge was along a circular curve with 1000 m. The key point, the influence from curvature to lateral deformation was emphasized through analyzing curved bridge deflection controlling influence factors and by use of the combination of structure space stress analysis and in-site data.