变形监测在龙门垭拱式渡槽支撑系统的应用

Application of Deformation Monitoring in Longmenya Arch Aqueduct Support System

龙门垭拱式渡槽主拱圈(即肋拱)施工采用钢筒+贝雷梁+满堂脚手架支撑体系,其基础需要承受支撑体系和主体结构的全部荷载。因此,肋拱混凝土浇筑之前必须完成预压试验,且因该处地质情况发生了较大变化,基础位于软基之上,为确保施工顺利,变形观测就显得尤为重要。介绍了具体的实施过程。

The main arch ring(i.e.rib arch)of Longmenya arch aqueduct is constructed with steel tube+Bailey beam+full scaffold support system,and its foundation needs to bear all the loads of the support system and the main structure.Therefore,the preloading test must be completed before the concrete casting of the rib arch,and the foundation is located on the soft foundation because of the great change of the geological conditions,in order to ensure the smooth construction,the deformation observation is particularly important.The specific implementation process is introduced.