| 英文摘要 |
Bridge managers are always looking for an easy method to measure vertical displacements of bridges. With the advancement of fiber-optic technologies, fiber Bragg grating (FBG) sensors are nowadays commonly used in structural health monitoring due to their outstanding advantages, including multiplexing capability as well as high resolution and accuracy. In this study, FBG- differential settlement measurement (DSM) sensors, connected by a hydrostatic leveling system of communicating vessels, were used for displacement measurements along a large-scale Prestressed Concrete I (PCI) beam in the laboratory. The measured displacements matched well with the corresponding experimental values from linear variable differential transformers. |
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