Force Analysis And Aseismic Study Of Subway Tunnel Lining Structure

China’s economy has entered high-speed development period in the new millennium.Infrastructures in each city have been boosted and improved. However, under thecircumstance of urbanization and private car’s popularization, city transportation networkshaven’t been planned reasonably with great defects in structure. Therefore, the urban trafficproblems become more and more severe. At present, subway is a project being rapidlydeveloped in domestic cities. A majority of provincial capitals and non-provincial cities indeveloped provinces have carried out subway construction. The huge task China is facing in21th contrary is constructing subway into a sustainable network to promote society’sharmonious development for reinvigorating China’s economic and social development.Quakeproofing of underground structure hasn’t been paid enough attention before due tothe universal view thatthe constraint of rock and earth mass around offer the structure theability of possessing good quake-resistant. Since the increase of the underground structuresday by day, the destructions suffered from earthquakes have been more and more frequent.By the reason of the nature of rock mass’ complexity, tectonic complexity andconstruction method’s diversity, the analysis of the underground structure and relativeproblems according to analytical method encounter huge challenge. However, the finiteelement method has been proved its superiority in solving complicated rock mechanicsproblems. Hence, the finite element method has been more and more employed inunderground projects.The paper, by combining practical engineering’s data with MIDAS/GTS of softwaresimulation, simulates the surrounding rock pressure precisely. By means of comparingvarious lining structures, the structure applied to subsurface tunnel’s lining structure inChangchun for enough severity in resisting the pressure from the surrounding rock as well asenough flexibility for not suffering too much pressure under semi loading forces.Simultaneously, different lining structures’ anti-seismic behaviors under the artificial wavesare analyzed.