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Akbar Salemi,Reza Mikaeil,Sina Shaffiee Haghshenas 대한토목학회 2018 KSCE JOURNAL OF CIVIL ENGINEERING Vol.22 No.5
In this study, it is aimed to investigate the behavior of the concrete lining of circular shallow tunnels in sedimentary urban areasunder seismic loads using integration of numerical and metaheuristic techniques. The Tabriz Urban Railway (TUR) Tunnel is used asa case study in this investigation. The seismic and geotechnical characteristics of the area were studied, and seismic analysis wascarried out using a finite difference code (i.e., FLAC2D) and genetic algorithm. In the first step, final induced loads on lining due toDesign Base Level (DBL), Maximum Credible Level (MCL) and static loads were determined using FLAC2D software. Then, eightparts of lining were classified using genetic algorithm based on axial force, bending moment and shear force for two types ofearthquake loads. The results of classification were verified by the safety factors of the studied parts of the lining. By comparing theseresults, it can be concluded that the genetic algorithm can be reliably used to classify and evaluate the safety of lining based on staticand dynamic loads.