声波 CT 技术在旧桥粘钢加固评价中的应用

Application of Acoustic Wave CT Technology in Evaluation of Steel-bonded Reinforcement of Old Bridge

摘要:

在役桥梁运营维护中，粘钢加固技术由于其经济、便捷等特点是保证桥梁安全运营的重要手段。但由于现有检测手段的不足，旧桥粘钢加固后修复效果是未知的。为弥补检验修复效果这一空白，将CT技术引入旧桥粘钢加固评价当中，以安徽某大桥的工程为例，用声波CT技术可以检测加固区域混凝土整体质量，得到定性、定量的检测结果，为旧桥加固修复情况提供客观评价，且可增强后续处治的针对性，并节约维修成本。

Abstract:

In the operation and maintenance of bridges under service, the steel-bonded reinforcement technology is an important means to ensure the safe operation of bridges due to its economic and convenient characteristics. However, due to the insufficient existing detection means, the repair effect of old bridge after steel-bonded reinforced is unknown. In order to fill the gap of checking the repair effect, the CT technology is introduced into the evaluation of steel-bonded reinforcement of old bridges. Taking a bridge project in Anhui as an example, the use of acoustic wave CT technology can detect the overall quality of concrete in the reinforced area, and obtain the qualitative and quantitative detection results, which provide an objective evaluation on the reinforcement repair conditions of old bridge, can enhance the pertinence of follow-up treatment and save the maintenance costs.