Beam-spring analysis combined with back analysis algorithm for tunnel stability under operation

초록

Due to the increase of number and length of tunnel, the analysis on the structural stability is crucial for the performance evaluation of tunnel in-use. Recently, various monitoring techniques enable to detect the behavior of tunnel even after the construction. Although the structural analysis is essential for the performance evaluation, it cannot properly consider the current conditions obtained from monitoring system such as stress acting on the tunnel and measured displacement of tunnel lining. This study uses beam spring method to analyze the structural stability of segment lining. And differential evolution algorithm is combined with beam spring analysis for back analysis. Using the developed back analysis system, the structural stability of operating tunnel can be evaluated based on the multiple measured data in real-time.