Application of the Framework Composite-lining Structure on the Subsurface Construction

When the CRY) excavation method are used to tunneling large cross section, the horsehead-breaking of crosschannel is often the largest part of deformation, a reinforced structure of the architecture is required. There are three common practice inductions:to make Secondary-lining method, to make composite-lining method, to make reinforcement posted-beam method, this article analyzes the advantages and disadvantages of these three methods, and proposes the conception of the framework composite lining. Based on the Beihaibei Metro Station, using the load-structure model and the three-dimensional stratum model, from the strength, deformation, and risk prediction, this article demonstrates the feasibility of such strengthening measures.