沁河大桥连续刚构合拢的研究

Study on Closure of Continuous Rigid Frame for Qinhe River Bridge

预应力技术广泛运用于桥梁悬臂浇筑的高墩实际工况中。针对高墩预应力混凝土连续刚构桥合拢的顺序和方式,通过实际桥型的计算及模拟分析,针对几种备选方式进行验证,最后得出不同工况下的选择方式和意义,为今后高墩预应力混凝土连续刚构桥施工提供参考。

The pre-stressing technology is widely used in the practical cantilever pouring construction of high bridge pier.Aiming at the closure sequence and mode of the high-pier pre-stressed concrete continuous rigid-frame bridge,and according to the calculation and simulation analysis of actual bridge type,the article verifies several alternative modes,and finally gives the selection modes and significances under the different construction conditions,which can be referred for the construction of high-pier pre-stressed concrete continuous rigid-frame bridges in the future.