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Title |
A study on improved inspection method of the foundation scouring and establishment of 3D underwater surface map
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Authors |
최현철(Hyun-Chul Choi) ; 고준영(Jun-Young Ko) |
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DOI |
https://doi.org/10.11112/jksmi.2022.26.5.161 |
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Keywords |
교량 유지관리; 기초세굴; 기초점검; VRS; 3D 하상지도 Bridge maintenance; foundation scouring; foundation inspection; VRS; 3D underwater surface map |
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Abstract |
The maintenance of bridges installed in rivers is carried out through facility safety inspection and repair & reinforcement procedures according to the results. Many studies have been so far conducted on the safety check of the bridge upperstructure because of the ease of access. However as it is impossible to directly investigate whether the pier foundation installed in the river has been scoured. Management of underwater foundations has remained based on theory. In this study, the scour of the bridge foundation installed in such a river was realized in 3D form by using an echo sounder and VRS. This made it possible to predict the scour pattern through comparison and analysis with the ground height of the riverbed at the time of the bridge installation. Based on these results, if the pier foundation is used as an initial data to determine whether or not local scour is present and to predict long-term scouring, bridge collapse due to foundation scour can be prevented.
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