应变监控技术在现役桥梁墩柱纠偏施工中的应用

Application of Strain Monitoring Technology in Deviation Correction Construction of Existing Bridge Pier Studs

某公路桥梁下部结构墩柱出现了较大偏位,无法满足运营安全要求,通过监控墩柱复位纠偏施工中的实际内力变化,且同步进行位移监控复核,对纠偏施工过程进行双控,避免了单一采用位移控制无法掌握墩柱实际内力分布情况导致的结构“过纠”问题,通过桥梁墩柱纠偏施工,恢复了墩柱结构的承载能力,达到了预期效果,可为相关的工程提供参考。

The pier studs of the lower structure of a highway bridge have large deviation,which cannot meet the operational safety requirements.By monitoring the actual internal force changes in the pier stud restoration and deviation correction construction and synchronously checking the displacement monitoring,the deviation correction construction process is double-controlled,so as to avoid the single use of displacement control.But the"over correction"problem of structure caused by actual internal force distribution condition of pier studs cannot be mastered.The bearing capacity of pier stud structure is restored through the deviation correction construction of bridge pier studs,and the expected effect is achieved,so as to provide reference for related projects.