基于光纤传感技术的混凝土结构深层裂缝监测研究

Study on the monitoring of deep crack of concrete structure based on fiber-optic sensing technology

为了提高混凝土结构深层裂缝监测能力,提出基于光纤传感技术的混凝土结构深层裂缝监测方法。构建混凝土结构深层裂缝分布的光纤传感器监测网络模型,采用光学传感检测技术进行混凝土结构深层裂缝的数据采集,对采集的混凝土结构深层裂缝光检测数据进行融合处理,进行混凝土结构深层裂缝光纤传感数据的可视化重构,提取混凝土结构深层裂缝的特征分布信息参量,采用光纤传感检测技术,进行混凝土结构深层裂缝的信息参量估计。采用统计特征分析的方法,实现对混凝土结构深层裂缝的相关物理参数估计和结构检测。仿真结果表明,采用该方法进行混凝土结构深层裂缝监测的物理参数估计精度较高,对裂缝的检测准确性较好。

In order to improve the monitoring ability of deep cracks in concrete structures,a monitoring method of deep cracks in concrete structures based on optical fiber sensing technology is proposed.The optical fiber sensor monitoring network model of deep crack distribution of concrete structure is constructed,the data collection of deep crack of concrete structure is carried out by using optical sensing detection technology,the optical detection data of deep crack of concrete structure are fused,the visual reconstruction of optical fiber sensing data of deep crack of concrete structure is carried out,and the characteristic distribution information parameters of deep crack of concrete structure are extracted.Optical fiber sensing technology is used to estimate the information parameters of deep cracks in concrete structures,and statistical feature analysis is used to realize the estimation of physical parameters and structural detection of deep cracks in concrete structures.The simulation results show that the physical parameter estimation accuracy of deep crack monitoring of concrete structure is high,and the accuracy of crack detection is better.