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List of products by author: I. M. Lee
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Application to the Reliability Index of Tunnel Maintenance based on Field Inspection
Abstract: New integrated approach for assessing the integrity of underground structure has been verified with the rebound number, ultra-sonic speed, carbonation speed, and deterioration rate in the Precise Inspection for Safety and Diagnosis by KISTEC. To combine the evaluation of each NDT (Non-Destructive Test) technic, limit state function has been suggested based on the experimental output from 28...
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Assessment of deterioration in underground structures using field inspection
Abstract: As soon as the infrastructure has been built, the deterioration started. The previous paper is focused on the influence of carbonation for the durability (Choo et al, 2014). This paper is the second part of the deterioration assessment related with the state of filed inspection: crack, leakage, effloresce, exfoliation, spalling, and so on. Based on the design approach of Duracrete, the...
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Harmony Search Algorithm to Predict Anomalous Zone Ahead of Tunnel Face
Abstract: During tunnelling work, emergence of unpredicted fault or anomalous zone leads to delay of construction work or increase of construction cost hampering construction ability. Predicting the anomalous zone ahead of tunnel face in advance can thus prevent time and economic loss. This raised the demand to develop a prediction technique that detects anomalous zones ahead of a tunnel face during...
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Risk Analysis Applicable to Shield TBM Tunnels
Abstract: In this paper, the potential risk of undesirable events that may occur during tunnelling work with a Shield TBM method is discussed along with the general risk analysis that can systematically assess overall risk levels. Potential risks and typical scenarios pertaining to shield TBM tunnels have been investigated based on previous case histories and correspondence with experts. The relevant...
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The study of support pattern in modern rock TBM with a pressurized ring beam system
Abstract: The pressurized ring beam has been devised to improve the performance of primary support by applying pressure to circular steel ribs (i.e., ring beams) during operating a modern rock TBM. In this paper, an appropriate support pattern is suggested for the pressurized ring beam in consideration of typical ground conditions for the modern rock TBM. A case study has been performed with respect to...
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