大跨度预应力混凝土连续梁悬臂施工控制研究

Study of the Construction Control of Long-span PC Continuous Beam Bridge

大跨度预应力混凝土连续梁常采用挂篮悬臂浇筑施工。文章结合具体工程实例,采用Ansys建立施工仿真计算模型,提出采用灰色理论预测法对主梁挠度变化进行预测,提供各施工阶段的立模标高,以指导施工,该方法对同类桥梁的施工有很好的参考价值。

Long span prestressed concrete continuous beam bridge constructed often by basket, through the practical application of the construction control of a PC continuous beam bridge,the finite element model was stabilished by Ansys,and use the method of Gray Forecasting Control to forecast inflection of main beams＇ deflections, the reasonable elevation of formwork of every stage was obtained.It would be a good reference to the construction of bridges that have the same structure type.