A Study on the Safety Evaluation of the Landing Pier Structure Using FBG Sensor

FBG 센서를 이용한 잔교식 안벽 구조물의 안전성 평가에 대한 연구

Lee, Heung-Su

  • Received : 2018.10.17
  • Accepted : 2018.12.19
  • Published : 2019.03.01


The underwater structures of landing pier are not easy to access and it is difficult to check the damage. Lately, typhoons and earthquakes have occurred frequently, which may cause damage to underwater structures of landing pier. In this study, to prevent collapse of underwater structures and to maintain systematically, the application method of FBG sensors and safety evaluation methods were studied. In order to confirm the application of the FBG sensor to the circular steel pipe used as a pile on the landing pier, we conducted laboratory tests and confirmed that the FBG sensor should be applied by welding. As a result of structural analysis of the landing pier structure, the optimal position of FBG sensor confirmed. The stresses on the dead load were calculated by structural analysis, the stresses on the live load were calculated by using the data obtained from the FBG sensor, and then the stress acting on the pile was calculated by adding the two stresses. The calculated stress was compared with the allowable stress to evaluate the safety of the pile. This study was carried out as a basic study to find a way to evaluate the safety of the landing pier in real time.


Landing pier;Underwater structure;FBG sensor;Maintenance;Safety evaluation


Supported by : 해양수산과학기술진흥원