广珠鸡鸦水道特大桥预应力连续刚构应力监测

Stress monitoring of prestressed continuous rigid frame of Guangzhu Jiyashuidao super large Bridge

结合具体工程实例,详细介绍了利用预埋在主梁各断面顶底板和中性轴的应变计进行混凝土徐变系数识别,采用叠加法进行徐变应变分离的过程,得出了该应力监测效果良好的结论,可供工程技术人员参考。

Combined with the concrete engineering examples,the paper introduces detailedly the identification of the concrete creep coefficient by using the strain gauges which are buried in the roof and the floor,the neutral axis of the main girder sections and the separation process of creep strain in stress by using the superposition method,and draws the conclusion that the stress monitoring shows a good effect,which provides the reference for the engineering technicians.