等截面无铰拱桥的动态分析研究

Dymumic analysis of uniform arch bridge without articulation

在拱桥的无支架施工过程中，拱圈形成的各个阶段拱轴线型都在发生变化。显然再用固定的拱轴方程来进行分析已不适应实际情况的需要。本文采用曲线拟合的方法，动态地求得施工各阶段的拱轴方程，并给出了相应的动态分析的简化计算公式。

Arch axic linear type change in each stage of arch ring formed,during the Construction of arch bridge without Support.lt is obviously that the Fixed arch axis equation has not met the need of the actual situation.the paper evaluate arch axis equation dynamicly in each stage of Construction with Curve mimicry method,and give a relative,dynamic analysis and simple Calculating formula