赤外線サーモグラフィカメラによる地下鉄トンネルの浮き·はく離検出に関する有効性の検討

摘要

In this research, we validated the effectiveness of infrared thermometry in detecting void near surface and flaking in the subway tunnel. At first, we performed the measurement by setting the camera at a fixed po-sition. Then we confirmed the condition for detecting void and flaking by evaluating the difference in temperature between sound and unsound surface using the infrared thermometry data. Next, based on the gained condition we detected void and flaking using the data obtained by moving the infrared camera. By comparing the results of infrared thermometry against the hammering test, we found that the detection rate of overall void and flaking by using infrared thermometry was 70-80%. In the case of rank A and B judged by the hammering test, the detection rate from infrared thermometry was over 90%.%本研究では，固定計測において赤外線熱計測により変状部と健全部の温度差による覆工コンクリートの浮き·はく離が認識できることを確認した.次に移動計測により，広範囲の覆工コンクリートにおいて赤外線熱計測の適用が可能であるかを分析した.その結果，以下の知見を得た.