盖梁预应力工程施工过程优化研究

Study on Optimization of Prestressed Engineering Construction Process of Bent Cap

通过Midas-FEA有限元分析系统对沌口互通式立体交叉主线桥左幅24#盖梁预应力工程施工过程进行优化,研究发现对大悬臂盖梁预应力筋采用一次张拉方式并且在盖梁与桥墩交界处添加钢筋网片,不仅可保证工程质量,而且可大幅缩短工期以及设备占用时间。

The finite element analysis system Midas-FEA is used to optimize the prestressed engineering construction process of bent cap No.24 of the left main bridge for the Zhuankou Interchange Project. The study finds that the one-time tension mode used for the prestressed tendon of large-cantilever bent cap and the steel reinforced meshes added at the junction of bent cap and bridge pier cannot only guarantee the engineering quality, but also greatly shorten the construction period and the occupation time of the equipment.