架桥石枢纽闸墙加固改造施工监测及测试分析

The field observation & stress research on ship lock wall of Jiaqiaoshi hub

为了解老旧船闸进行加固改造后的加固效果,对加固中的架桥石船闸进行了多项监测,其中选用钢筋计对帷幕灌浆加固后的闸墙应力进行监测,对船闸闸墙监测应力趋势进行了分析,得出应力处于允许变化范围之内,温度和水位是影响应力变化的主要因素;根据相关方法,由钢筋计应力分析计算出混凝土应力,得出加固后船闸处于安全施工状态.这表明各种加固措施切实有效,加固措施是对船闸整体稳定性验证分析的重要补充.

In order to study the reinforcement effect of old ship lock reinforced,a lot of apparatus about monitoring had been fixed when the ship lock was overhauled in engineering project,one of the instruments was rebar strain meter,which was selected to measure the stress of the ship lock wall.The changing trends of magnitude of stress show that all the magnitudes are in the allowing range,the temperature and water level were critical interfering factors for stress-changing trends.According to relevant method,the magnitude of concrete stress was calculated on the basis of the rebar strain meters.The ship lock reinforced was in the safe construction state,all sorts of reinforcement measures were practical and effective.It was an important replenishment to assay the stability of Jia qiaoshi ship lock.