大跨度预应力混凝土连续刚构桥施工监测仿真分析

通过在施工现场进行参数识别的方法对东江南特大桥的结构计算参数取值,并进行该特大桥的施工阶段仿真计算分析。通过对重要结构参数的灵敏度分析得出混凝土容重,混凝土弹性模量、混凝土的收缩徐变作用和预应力管道摩阻系数对大跨度桥梁的预拱度和应力有较大影响。通过符合实际施工过程的仿真计算,为鉴定大桥施工现场监测数据的真伪提供可靠的保证。

The Construction Monitoring Simulation Analysis of Great Span Pre-stressed Concrete Continual Rigid Frame Bridge

Some research are presented on the construction stage simulation analysis of the South East River super major bridge by way of deciding the parameter value of the structure at construction site using the method of parameter identification.Through the analysis of the important structure parameter sensitivity,the bulk density,modulus of elasticity and contraction continuous variation of concrete are concluded,as well as the pipeline frictional coefficient have a greater impact on the pre-camber and stress of ...