MONITORING STRUCTURAL HEALTH OF DIFFERENT TYPES OF BRIDGES USING ADVANCED MULTI-TEMPORAL INSAR

摘要

Since the bridges paly a significance role in national economicrndevelopment and transportation safety, the structure healthrnand safety of bridges aroused a lot of concern in society andrnbecome a hotspot research in earth observation and civilrnengineering. However, the materials degradation andrnenvironmental stresses increase may destroy the structure ofrnbridges and pose significant risks to public safety and qualityrnof life. This highlighted the importance of developing effectivernstructure health monitoring strategies to reflect the currentrnstatus of bridges and identify structural problems. In thisrnwork, an advanced multi-temporal InSAR technique isrnintroduced into deformation monitoring of bridges. We focusrnon analysis the distribution of PSs, distinction of stable andrnunstable parts and recognition temporal-spatial deformationrncharacteristics at the scale of single bridge through thernexamples of different types of bridges in Tianjin and Shanghai.