Research on Construction Control of Temporary Transverse Support and Permanent Slant Support for New Bridge Tower
In order to ensure the safety and stability of the temporary transverse support demolition and permanent slant support installation construction of the bridge tower,this paper takes the bridge tower of Sangyuanzi Yellow River Bridge as an example,and uses Midas Civil software to optimize the construction scheme of the temporary transverse support demolition and slant support concrete pouring of the bridge tower.The results show that the existence of permanent slant support is conducive to the early demolition of temporary transverse support,and the demolition sequence of temporary transverse support before capping has small influence on the stress of the bridge tower completion,but has great influence on the demolition force of temporary transverse support.The concrete pouring in the slant support after the installation of the slant support is beneficial to the slant support to adapt to the stress change of the bridge tower in the later period.Using the optimized construction method,the development trend of the measured value and the calculated value of the tower column stress is basically consistent,and the maximum stress deviation is 0.32 MPa,which meets the requirements of the specification.
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