青岛客站24m预应力后张梁的施工研究

Research on the construction of 24 m prestressed post-tensioned beam at Qingdao station

针对青岛客站改造工程中的预应力后张梁的施工难题,设计了预应力张拉的顺序,计算分析了预应力张拉对梁挠度的影响,并通过现场监测了预应力后张梁的施工,计算结果和监测数据表明本文所设计的后张梁施工方案是安全有效的,对今后类似工程施工具有指导意义。

In light of the construction difficulty of prestressed post-tensioned beam in Qingdao station renovation project,this paper designs the prestressed tensioning sequence,calculates the impacts of prestressed tension on beam deflection,and monitors the construction of prestressed post-tensioned beam in the field.The calculation results and monitoring data show that the post-tensioned beam construction scheme designed in the paper are safe and effective,which has guiding meaning for similar engineering construction in future.