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Title |
Study on Establishment of a Monitoring System for Long-term Behavior of Caisson Quay Wall
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Authors |
이태민(Tae-Min Lee) ; 김성태(Sung Tae Kim) ; 김영택(Young-Taek Kim) ; 민지영(Jiyoung Min) |
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DOI |
https://doi.org/10.11112/jksmi.2023.27.5.40 |
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Keywords |
항만시설물; 케이슨 안벽; 거동; 데이터베이스; 센서; 장기 모니터링 Port structure; Caisson quay wall; Behavior; Database; Sensor; Long-term monitoring |
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Abstract |
In this paper, a sensor-based monitoring system was established to analyze the long-term behavioral characteristics of the caisson quay wall, a representative structural type in port facilities. Data was collected over a period of approximately 10 months. Based on existing literature, anomalous behaviors of port facilities were classified, and a measurement system was selected to detect them. Monitoring systems were installed on-site to periodically collect data. The collected data was transmitted and stored on a server through LTE network. Considering the site conditions, inclinometers for measuring slope and crack meters for measuring spacing and settlement were installed. They were attached to two caissons for comparison between different caissons. The correlation among measured data, temperature, and tidal level was examined. The temperature dominated the spacing and settlement data. When the temperature changed by approximately 50 degrees, the spacing changed by 10 mm, the settlement by 2 mm, and the slope by 0.1 degrees. On the other hand, there was no clear relationship with tidal level, indicating a need for more in-depth analysis in the future. Based on the characteristics of these collected database, it will be possible to develop algorithms for detecting abnormal states in gravity-type quay walls. The acquisition and analysis of long-term data enable to evaluate the safety and usability of structures in the event of disasters and emergencies.
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